The present invention relates to a press body for a paper machine having an extended nip formed between the press body and a counter-pressure member, wherein the press body is elastically deformable and comprises a working surface, and wherein the press body comprises a first pressure chamber and a second pressure chamber that are arranged inside the press body and separated from each other by a partition wall, which pressure chambers are configured to be pressurized such that the press body expands for pressing the working surface towards the counter-pressure member, and wherein the partition wall between the first and second pressure chambers has a wall thickness of 1 mm – 20 mm. The invention also relates to a paper machine comprising at least one press body.
The present invention relates to a press body for a paper machine having an extended nip formed between the press body and a counter-pressure member, wherein the press body (50) is elastically deformable and comprises a working surface (15), and wherein the press body comprises a first pressure chamber (51) and a second pressure chamber (52) that are arranged inside the press body (50) and separated from each other by a partition wall (55), which pressure chambers (51, 52) are configured to be pressurized such that the press body (50) expands for pressing the working surface (15) towards the counter-pressure member, and wherein the first pressure chamber (51) has a first height (h1) and the second pressure chamber (52) has a second height (h2), and wherein the first height (h1) is larger than the second height (h2) The invention also relates to a paper machine comprising such a press body.
A through-air apparatus for drying or bonding paper, tissue, or nonwoven webs is provided. The through-air apparatus includes a through-air roll configured for rotational movement about a first axis, the through-air roll having a first end and a second end. The through-air apparatus includes an exhaust duct/passage adjacent to the first end of the through-air roll, and a hood encompassing a portion of the through-air roll, where the hood defines an active arc length of the through-air roll positioned inside of the hood. The through-air apparatus further includes a first shroud extending substantially from the exhaust duct to the hood, the first shroud configured to reduce the amount of process air inside of the through-air apparatus that is released out of the through-air apparatus and reduce the amount of air outside of the apparatus that leaks into the through-air apparatus.
A through-air apparatus for drying or bonding paper, tissue, or nonwoven webs is provided. The through-air apparatus includes a through-air roll configured for rotational movement about a first axis, the through-air roll having a first end and a second end. The through-air apparatus includes an exhaust duct/passage adjacent to the first end of the through-air roll, and a hood encompassing a portion of the through-air roll, where the hood defines an active arc length of the through-air roll positioned inside of the hood. The through-air apparatus further includes a first shroud extending substantially from the exhaust duct to the hood, the first shroud configured to reduce the amount of process air inside of the through-air apparatus that is released out of the through-air apparatus and reduce the amount of air outside of the apparatus that leaks into the through-air apparatus.
A sodium recovery process (1) for recovering sodium salts from recovering sodium salts from ash in an ash treatment plant in a pulping mill, said sodium recovery process comprising the feature of mixing ash from burning of black liquor with a liquid to form an ash suspension by mixing ash and liquid in a ratio between 1:1,5 and 1:4 by weight, said ash suspension subjected to temperature between 40 and 100 degrees °C whereby sodium salts are precipitated and forming a stream of solids separated from the liquid phase, said liquid phase forming a purge (2), the sodium recovery process (1) further includes the steps of: - diluting the purge (2) by addition of 2 % by weight to 60 % by weight of water (8); cooling the purge (2) to a temperature of below 15 °C; - allowing sodium salts to precipitate from the cooled and diluted purge (2); - separating a liquid phase (12) from the precipitated sodium salts (11); - withdrawing the liquid phase (12) from a slurry (16) of the precipitated sodium salts (11).
Embodiments of the invention involve a machine (1) for producing a fibrous web, such as for tissue, for example paper tissue, the machine comprising a forming section (2) and a drying section (4, 5), wherein the machine is adapted to form a stream of combined air by combining exhaust streams from the forming section (2) and the drying section (4, 5), and to guide the stream of combined air to a combined air heat exchanger (7) adapted to transfer heat from the combined air to a fluid combined air to a fluid.
A ssue paper drying system and a method for operang such a ssue drying system The ssue drying system comprises a yankee drying secon (11), a separator tank (21), a heat pump system (31; 31'; 31'') and a steam recirculaon arrangement (41; 41'; 41''; 41'''). Exhaust air from a yankee hood of the yankee drying secon and/or from another hot air dryer device such as a TAD secon (111) is used as heat source in the heat pump system. Liquid water transferred out from a yankee cylinder of the yankee drying secon is transformed into steam in a heat sink side of the heat pump system and the steam is recirculated back for use in the yankee cylinder.
The present invention relates to a blade for a refiner, the blade (10) comprising a plurality of refiner bars (14) separated by grooves (15), and also comprising a plurality of refiner dams (16) arranged across the grooves (15) to connect refiner bars (14) on either side of the grooves (15) to each other, and further5 comprising at least one through-hole (18) in at least one of the refiner dams (16) for enabling a flow along the groove (15) through the dam (16).The invention also relates to a refiner comprising such a blade (10) and to a method for manufacturing the blade (10).
A feeding arrangement (100) for feeding non-wood plant material to a treatment vessel (10), said feeding arrangement comprising a plug screw feeder (20) configured to feed plant material to the treatment vessel (10), and a force feeder (30) configured to feed plant material to the plug screw feeder (20), wherein the plug screw feeder (20) comprises a plug feeder screw (21) arranged in a plug screw feeder barrel (22) and has a plant material receiving inlet (23) and a plant material plug discharge outlet (24); and the force feeder (30) comprises a force feeder screw (31) arranged in a force feeder barrel (32) and has a plant material receiving inlet (33) and a plant material discharge outlet (34), characterized in that the inlet (23) of the plug screw feeder (20) is located on an upper side of the plug screw feeder (20) and the force feeder (30) is arranged with its plant material discharge outlet above the plug screw feeder inlet (23), and wherein an inlet housing (40) is arranged between the force feeder (30) and the plug screw feeder (20), said inlet housing (40) having an inlet opening (42) connected to the force feeder outlet (34) and an outlet opening (41) connected to the plug screw feeder inlet (23).
Method for monitoring a steam explosion process, the steam explosion process comprising thermally treating the biomass material with steam (and optionally a catalyst such as an acid catalyst) at elevated pressure and temperature in at least one reactor and discharging the biomass material and blow steam from the at least one reactor by means of steam explosion discharge. The method for monitoring comprises the following steps: collecting (2) at least part of the blow steam; condensing (3) the collected blow steam to provide a condensate; carrying out Raman spectroscopy measurements (4) on the condensate to obtain at least one Raman spectra and predicting (5) at least one parameter indicative of the severity of the steam explosion process based on said Raman spectra. A method for controlling a steam explosion process is also provided as well as corresponding systems.
The present application relates to a method for detecting vibrations in a creping blade of a tissue machine, which tissue machine is provided with one or more vibration sensors which are arranged to detect vibrations of the creping blade, the method comprising the steps of receiving vibration signals from the vibration sensors, which vibration signals are indicative of vibrations of the creping blade, monitoring (302) the vibrations signals within one or more resonance frequency ranges, identifying (304) one or more peak frequencies within the resonance frequency ranges, monitoring (306) the amplitude of the one or more peak frequencies, comparing (308) the amplitudes of the one or more peak frequencies with a respective of one or more pre-determined levels, and generating (310) a chatter alert if one or more of the monitored amplitudes are above said respective pre-determined level.
G01N 29/14 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
D21G 9/00 - Other accessories for paper-making machines
12.
AN APPLICATOR FOR A MACHINE FOR PRODUCING A FIBROUS WEB AND A MACHINE FOR PRODUCING A FIBROUS WEB
The invention relates to an applicator (7) for a machine for producing a fibrous web, for applying air to a moving fibrous web manufactured by the machine, comprising an envelope (701) forming a cavity (702) adapted to receive the air, the envelope being adapted to extend, with an envelope main extension, in a web width direction which is transverse to a direction of movement of the web, wherein the envelope comprises a distribution plate (703) presenting a plurality of distribution holes (704) to distribute the air along the width of the web, wherein the applicator comprises a cleaning device (705, 709, 711, 712) extending along the envelope main extension, and being adapted to apply a liquid onto the distribution plate (703).
The present invention relates to a device for dewatering or cleaning a fabric in a paper machine, the device (1) comprising—a contact portion (2) arranged on a first side of the device (1) for contacting a fabric in a paper machine,—an air device (4) for transporting air to or from the fabric, the air device being operatively connected to at least one opening (3) in the first side for supplying or removing air through the at least one opening, and—a vibration generator (5) operatively connected to the contact portion and configured to cause a vibration of the contact portion during operation of the device. The invention also relates to a paper machine (100, 100′) comprising at least one such device.
Embodiments of the present disclosure may include a corrugated cover assembly for a vacuum rotary filter drum, comprising a corrugated cover element comprising crest sections and corresponding adjacent trough sections, wherein each trough section comprises an opening5 positioned at a first lateral side of the corrugated cover assembly, and each crest section and each trough section extend at least partially in a lateral direction of the corrugated cover assembly, the corrugated cover element comprises a lateral end at a second lateral side opposite the first lateral side, wherein the lateral end extends in a longitudinal direction of the corrugated cover assembly; and a sealing end strip extending along the lateral end of the corrugated cover10 element and arranged such that the lateral end is sealed.
B01D 33/067 - Construction of the filtering drums, e.g. mounting or sealing arrangements
B01D 33/073 - Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
15.
SYSTEMS AND METHODS FOR MIXING TREATMENT MEDIA INTO PULP
A system for mixing a treatment medium into pulp includes a mixer configured to mix the pulp and the treatment medium, a plurality of walls defining a plurality of channels, a pulp source fluidly coupled to each of the channels, and a treatment medium source that provides a portion of the treatment medium to each of the channels. The mixer includes a mixing chamber, a mixer inlet fluidly coupled to the mixing chamber upstream of the mixing chamber, and a mixer outlet fluidly coupled to the mixing chamber downstream of the mixing chamber. Each of the channels is fluidly coupled to the mixer inlet. The pulp source provides a portion of the pulp to each of the channels. Each of the channels provides the portion of the pulp and the portion of the treatment medium to the mixer inlet.
D21C 9/00 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
B01F 25/314 - Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
Press rollers [parts of machines]; cylinders being parts of
machines; roller washing machines for washing print rollers;
press fabric for paper making machines; paper production
machines.
(1) Press rollers [parts of machines]; cylinders being parts of machines; roller washing machines for washing print rollers; press fabric for paper making machines; paper production machines.
Press rollers [parts of machines]; cylinders being parts of machines; roller washing machines for washing print rollers; press fabric for paper making machines; paper production machines.
Embodiments of the present disclosure may include a method for extracting lignin from a lignin source, including a slurrying in which the lignin source is mixed with a first acidifier thereby forming a first acidic slurry Embodiments may also include a first separation step in 5 which lignin is separated from the acidic slurry forming a first lignin cake. Embodiments may also include a re-slurrying step in which the first lignin cake is mixed with a second acidifier thereby forming a second acidic slurry. Embodiments may also include a second separation step in which the lignin is separated from the second acidic slurry forming a second lignin cake. In some embodiments, a temperature of the first acidic slurry in the slurrying stage may 10 be kept equal to or lower than 80 °C.
The present invention relates to systems and methods for calculating the additional local stretching of a moving web through a converting process in order, during rewinding, to find the position of defects in the web that were identified during winding and stopping the web with the web defect close to or at a defect correcting station. The method comprises, during rewinding of the web, the steps of detecting position markers (PM(n)) applied during winding of the web (5), measuring the distance between the position markers, calculating the additional local stretching between the position markers occurring during rewinding, applying the calculated additional local stretching to the known position of a following web defect to determine an estimated position of that web defect in the rewinding web. A method for correcting a web defect comprises the step of subsequently stopping the web with the web defect at, or close to, a defect repairing station (38).
B65H 26/06 - Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to predetermined lengths of webs
B65H 26/02 - Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
G01N 21/88 - Investigating the presence of flaws, defects or contamination
G01N 21/89 - Investigating the presence of flaws, defects or contamination in moving material, e.g. paper, textiles
21.
METHOD, SYSTEM AND PROGRAM FOR PRODUCING A REFINER SEGMENT OUT OF A WORN REFINER SEGMENT, AND A REBUILT REFINER SEGMENT
Provided is a method for producing a refiner segment for refining lignocellulosic material. The method is suitable for rebuilding a refiner segment out of a worn refiner segment. The method includes providing a refiner segment workpiece; supplying rebuilding production data of a refining portion to a control device of an additive manufacturing device; and 3D printing the refining portion on the refiner segment workpiece by using the rebuilding production data. The worn refiner segments represent a substantial value and by re-using the used refiner segments the expensive process of melting them down and casting them again can be avoided.
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
B22F 5/10 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B27N 3/18 - Auxiliary operations, e.g. preheating, humidifying, cutting-off
B29C 64/386 - Data acquisition or data processing for additive manufacturing
A system for processing lignocellulosic materials includes: a pressurization vessel configured to perform hydrothermal treatment of the lignocellulosic materials using saturated or superheated steam; a pressure sealing screw configured to continuously discharge hydrothermally treated lignocellulosic material from the pressurization vessel to a discharge chamber; a control valve configured to add steam to the discharge chamber for pressure control; and a discharge nozzle configured to discharge the lignocellulosic material and steam from the discharge chamber with expansion of steam. The control valve is configured to add the steam to the discharge chamber so as to control a pressure in the discharge chamber to different levels at varying flow rates of the lignocellulosic material and to thereby control a ratio of an amount of steam that escapes through the discharge nozzle to an amount of the lignocellulosic material discharged through the discharge nozzle.
A conduit (1) for conveying a stream comprising fibers, - said conduit being provided with solely two openings (2, 3) for connecting the conduit to one or more additional conduits and/or to one or more apparatuses for providing and/or treating said stream; - said conduit comprising a curved portion (4); - said conduit being provided with a releasably connected wall portion (5) along at least a portion of said curved portion (4), said wall portion being at least partly provided at an outer radius of the curved portion, said wall portion forming at least part of an inner surface of the curved portion, said wall portion (5) being curved solely along a lengthwise direction of said curved portion (4), wherein said wall portion (5) comprises a wear-resistant coating, such as a ceramic coating, at an inner surface thereof.
A method for separating lignin (9) from an alkaline aqueous slurry (5) containing lignocellulosic biomass material, the method being carried out in a pulp mill and comprising an alkaline first lignin precipitation step (20) and an acidic second lignin precipitation step (22), wherein the alkaline first lignin precipitation step (20) involves lowering an initial alkaline pH value of the aqueous slurry by means of a first acidifying agent to a lower alkaline pH value The first acidifying agent comprises or consists of sulphuric acid (19) produced from sulphur, which has been at least partly derived from a green liquor stripping process (15) in the pulp mill. A system for carrying out the method is also disclosed.
A discharge valve (1) comprising a valve housing (2) connectable to a process element (10) having a pressurized interior process volume, said discharge valve (1) comprising a flow channel (3) having a longitudinal centre axis (A) and extending from an inlet (5) of the flow channel to an outlet (6) thereof, and being arranged to be in fluid communication with a pressurized interior process volume of said process element (10); and a first valve member (4) being arranged to protrude into the flow channel (3), and a second valve member (7) being arranged to protrude into the flow channel from a different direction than the first valve member.
F16K 3/24 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
A blade for a refiner for refining lignocellulosic material is delimited by an inner periphery and an outer periphery and includes: a blade surface with a refiner portion on which a plurality of refiner bars are arranged, where: each refiner bar extends from an outer bar end to an inner bar end, and the plurality of refiner bars are arranged so that a movement along a bar extension from an outer bar end to an inner bar end of a refiner bar is also a movement in a first circumferential direction; and a dam that extends from an outer dam end to an inner dam end and connects at least three refiner bars, and wherein the dam is arranged so that a movement along a dam extension from an outer dam end to an inner dam end is also a movement in the first circumferential direction.
A blade for a refiner for refining of lignocellulosic material includes a blade surface configured to face another blade of the refiner and having a refining portion comprising a plurality of bars and a plurality of dams, each dam extending between two adjacent bars of the plurality of bars. The plurality of dams comprises a first dam extending along a first dam axis, and a second dam extending along a second dam axis. The first dam axis is offset from the second dam axis in a direction along the first bar axis. A first bar comprises a bar section that extends between the first dam axis and the second dam axis. The bar section has a width in a width direction perpendicular to a first bar axis that is larger than a width in the width direction of a remainder of the first bar outside of the bar section.
A screw housing 21; 21', a pug screw feeder 3 and a material transport arrangement for transporting biomass material in a system 100 for treatment of biomass material Said screw housing 21; 21' comprising a screw housing inlet 23 positioned in a side wall 21a of the screw housing 21; 21', whereby material is to be fed into the plug screw feeder 3 via the screw housing inlet 23, the screw housing inlet 23 being configured for connection to a feeding device 31 comprising a force-feeding screw. Wherein the screw housing 21; 21' comprises at least one long anti-rotation bar 51; 51' provided to an inner surface 22 of the screw housing 21; 21' and reaching along at least ¾ of a length, l2, of the screw housing 21; 21', wherein said at least one long anti-rotation bar 51; 51' is provided in a lengthwise section 56; 56' of the inner surface 22, wherein said lengthwise section 56; 56' is provided along the whole length, l2, of the screw housing 21; 21' and does not comprise the screw housing inlet 23.
B30B 9/12 - Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
B30B 11/24 - Extrusion pressesDies therefor using screws or worms
B65G 33/14 - Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
D21B 1/22 - Disintegrating in mills in magazine-type machines with screw feed
A device and a method for weighing a roll of continuous web material on a spool at a weigh-ing station in a continuous process is described, which has fewer mechanical parts and is safer to use than prior devices and methods. The device is arranged adjacent to at least one of a pair of guide rails and comprises a damper and a load cell. wherein the load cell is integrated into at least one guide rail.
Press rollers [parts of machines]; Cylinders being parts of machines; Roller washing machines for washing print rollers; Press fabric for paper making machines; Paper production machines.
31.
HOOD ADJUSTMENT ASSEMBLY AND METHOD FOR ADJUSTING A POSITION OF A HOOD ON A DRYER CYLINDER
The present invention relates to a hood adjustment assembly comprising a hood (11), a first gap sensor (21) and a second gap sensor (22), a hood gap adjuster (12) and a hood gap controller (30) comprising processing circuitry (31) configured to - receive a first input signal (S1) from the first gap sensor (21) and a second input signal (S2) from the second gap sensor (22), - determine whether a first criterion for a desired hood gap is fulfilled, - if the first criterion is not fulfilled, determine a desired adjustment of the hood (11), - generate a control signal (C) that is configured to cause the hood gap adjuster (12) to apply the determined desired adjustment, and wherein the hood gap adjuster (12) is further configured to - receive said control signal (C) from the processing circuitry (31), and - move the hood (11) to adjust the hood gap (hg) based on said control signal (C). The invention also relates to a computerized method, a non-transitory computer-readable storage medium and a manufacturing method.
The present invention relates to a blade (10) for a refiner for defibrating a lignocellulosic material, the blade (20) comprising a refining surface (40) having a plurality of bars (20) separated by grooves (30), wherein each bar (20) has a bar width (w) and a bar height (h), said bar height being a height from a bottom of an adjacent groove to an upper end of said bar, and wherein at least one bar of the blade has a bar width of 1.5 mm or less and a bar height of at least 5 mm, and at least one groove (30) of the blade having a groove width (gw) of 1.5 mm or less, at least one of the bars (20) comprises a bar opening (23) in the form of a through-hole that extends through the bar (20) from one groove (30) to an adjacent groove (30). The invention also relates to a refiner comprising at least one blade, and to a method for manufacturing the blade.
A blow valve 15 and a biomass processing system 1 comprising such a blow valve Said blow valve 15 being connectable in a blow line 7 which is connecting two differently pressurized vessels 3, 5 of the biomass processing system 1. Said blow valve 15 is configured for controlling the flow of biomass material and fluid in the blow line 7, wherein said blow valve 15 comprises a shutter valve 31 with a central opening 33 of controllable size, said shutter valve 31 comprising a number of valve plates 35 which are disposed in an annular pattern surrounding the central opening 33 of the shutter valve 31 and wherein said valve plates 35 are movable in relation to each other whereby the size of the central opening 33 is controlled by moving the valve plates 35.
F16K 3/03 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor with a closure member in the form of an iris-diaphragm
F16K 3/04 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor with pivoted closure members
Discharge arrangement (1) comprising a screw conveyor section (2) provided with an inlet (2a) for receiving lignocellulosic material, an outlet section (3) arranged to receive lignocellulosic material from the screw conveyor section (2), a conveyor screw (2b) rotatably arranged within the screw conveyor section, a material spreader (4) rotatably arranged in the outlet section (3), a first opening (3a) and a second opening (3b) arranged peripherally of the material spreader (4) in a side wall (3') of the outlet section (3), the first and second openings being arranged at a distance from one another along an inner perimeter of the side wall, wherein the material spreader (4) is configured to, during rotation of the material spreader in a first rotational direction (R1), transport the lignocellulosic material in the first rotational direction and radially outwards towards the first opening (3a) for discharge of the lignocellulosic material, wherein the second opening (3b) is connected to a steam line (7) to provide discharge steam into the outlet section.
Discharge arrangement (1) for discharging lignocellulosic material comprising a screw conveyor section (2) provided with an inlet (3) and an outlet section (4) receiving lignocellulosic material from the screw conveyor section. A conveyor screw (5) is arranged within the screw conveyor section (2) for transporting the material from the inlet to the outlet section. A rotatable material spreader (8) driven by a drive unit (9) is mounted within the outlet section (4) to rotate in a first rotational direction (R1) and an opposite second rotational direction (R2). The material spreader comprises blade(s) (8a) for transporting the lignocellulosic material radially outwards and in the first/ second rotational directions. First and second outlets (7a) are arranged in a side wall (4a) of the outlet section. The first outlet receives material transported by the blade (8a) in the first rotational direction and the second outlet receives material transported by the blade in the second rotational direction.
The present invention relates to a system (200), and a corresponding method, for controlling the cleaning of a feeder housing (102) in a high-pressure feeder (100) with a housing (102) comprising a tapered cylindrical chamber (104) for holding a tapered cylindrical pocketed rotor (106) The chamber (104) has a drive end (108) and an opposing tending end (112). The system (200) further comprises a fluid conduit assembly with a first conduit part (118a) for transporting a first flow (F1) of cleaning fluid to the chamber (104) via the tending end (112) of the housing (102) and a second conduit part (118b) for transporting a second flow (F2) of cleaning fluid to the chamber (104) via the drive end (108) of the housing (102). The system (200) also comprises a control valve (120) arranged on the first conduit part (118a) for controlling the first flow (F1) and a controller (210) configured to control the control valve (120) to reduce the first flow (F1) in response to a first input signal (S1) indicative of the initiation of a cleaning of the high pressure feeder (100).
Disclosed are a method and system for producing activated carbon The method comprises subjecting a carbon containing material to a steam explosion process in order to form a steam exploded carbon containing material, and pyrolyzing the steam exploded carbon containing material such that the activated carbon is formed. The system for producing activated carbon, the system comprises a steam explosion reactor assembly configured to subject a carbon containing material to a steam explosion process in order to form a steam exploded carbon containing material, and a pyrolyzer configured to pyrolyze the steam exploded carbon containing material such that the activated carbon is formed.
An accessory is provided for a disc refiner that is for refining lignocellulosic material and includes at least two refiner discs, at least one of which is a rotor refiner disc, a motor, and a rotation shaft assembly that includes (i) a rotation shaft, (ii) a shaft housing, (iii) at least one bearing between the shaft housing and the rotation shaft for allowing rotation of the rotation shaft within the shaft housing, and (iv) at least one ring-shaped locknut that encircles the rotation shaft, is configured for holding the at least one bearing in place on the rotation shaft, and includes notches for a tool to grip when attaching the locknut in the rotation shaft assembly. The accessory is configured to be attached to the locknut and includes at least one covering part configured to at least partly cover the notches of the locknut when attached to the locknut.
Folding apparatus (201) for folding ends of wrapping material (202) extending beyond opposite lateral sides of a pulp bale (203) The folding apparatus comprises first displacement means (204) configured to displace the pulp bale in a first longitudinal direction (R11) to a first folding area (205), the lateral sides (203c) of the pulp bale facing perpendicularly relative the first longitudinal direction, and at least one fixed first folding plate (206a, 206b) arranged at the first folding area at each lateral side of the first folding area. The fixed folding plates are at a distance from each other adapted to a bale width. The folding plates each define a respective folding surface being disposed substantially perpendicularly relative the folding area and being substantially in parallel with the first longitudinal direction. The first displacement means is further configured to displace the pulp bale in a direction (R12) opposite the first longitudinal direction away from the first folding area (205).
A rotary lime kiln (1) comprising a tubular lime kiln body (2) having a first end (3) comprising a burner (5) and a second end (4) adapted to receive lime to be burnt in the rotary lime kiln (1). A boost gas injector (20, 20a, 20b) is arranged below the burner (5), at a lower part (7) of the lime kiln (1). A method for controlling flame stability in a rotary lime kiln (1) is also disclosed.
The present invention relates to separation of lignin from an aqueous slurry containing lignocellulosic biomass material comprising providing the aqueous slurry having an initial pH level to at least one precipitation phase for precipitating lignin, performing said precipitation phase during a reaction time including adding at least one acidifier, wherein a decrease in the pH value of the aqueous slurry to a lower ph level is created, separating the lignin in a first separation phase, performing an acidification phase including, performing a re-slurry step including mixing lignin from the first separation phase with an acidifier to form an acidic slurry, establishing a reaction temperature in a range of 65-95 degrees Celsius. and performing a retention step including maintaining the acidic slurry at the reaction temperature for a reaction time period of 30-60 minutes, and separating the treated lignin content from the acidic slurry in a second separation phase.
The invention relates to separation of lignin from an aqueous slurry containing lignocellulosic biomass material, such as black liquor, comprising the steps of providing an aqueous slurry having an initial pH level to a first precipitation phase, where the first precipitation phase is performed during a first time duration including adding a first acidifier. Thereby, a decrease in the pH value of the aqueous slurry from the initial pH level to a first pH level above 11 is created. Thereafter, processed aqueous slurry is fed from the first precipitation phase to a second precipitation phase. The second precipitation phase is performed during a second time duration. The second precipitation phase includes adding of a second acidifier, wherein a decrease in the first pH value from said first pH level to a second pH level above 9 is created.
A method for recycling textile material comprising cellulose, the method comprising treating (2) the textile material using Hot Caustic Extraction, HCE, and, after said treating, bleaching (4) material obtained from said treating The HCE is carried out at a temperature of at least 100 °C. The bleaching comprises at least one of ozone bleaching at a total ozone charge of more than 5 kg/odt; chlorine dioxide bleaching, and hydrogen peroxide bleaching at a total charge of more than 13 kg/odt.
A method for treating biomass material such as lignocellulose biomass is provided The method comprises impregnating (201) the biomass material with sulfur dioxide and/or sulfurous acid, and subjecting the biomass material to hydrothermal treatment (202) in a pretreatment reactor. The method further comprises controlling the treatment severity of the hydrothermal treatment by controlling (203) the sulfur dioxide partial pressure in the pretreatment reactor. A system for treating biomass material is also provided.
A method for impregnating biomass material, the method comprising compressing the biomass material, feeding the biomass material into an inlet (101c) of an impregnation reactor (101) such that the biomass material expands into the impregnation reactor and adding impregnation liquid into the impregnation reactor such that it is absorbed by the biomass material and/or such that an impregnation liquid level (101a) is formed in said impregnation reactor, which impregnation liquid level (101a) is below said inlet (101c) A corresponding system is also provided.
Method for treating biomass material, comprising impregnating (201) the biomass material with sulfur dioxide and/or sulfurous acid in an impregnation reactor, subjecting the biomass material to hydrothermal treatment (202) in a pretreatment reactor, and determining (204) a flow, or a parameter indicative of a flow, of gases vented off from an upper portion of the pretreatment reactor The method further comprises controlling (205a, 205b) the impregnating based on the flow of gases, or the parameter indicative of the flow of gases. A corresponding system is also provided.
The present invention relates to a screw conveyor comprising a housing (20) with an inlet opening (13) and an outlet opening (14), a conveyor screw (30) having a central shaft (31) with a helical blade (32) on a first axial portion (A) and a plurality of paddles 33 on a second axial portion B, the paddles being between the helical blade and the outlet opening (14), and wherein the helical blade (32) forms a first helix (H1) on the central shaft and the plurality of paddles are arranged such that a middle point of each of the paddles form a second helix (H2), wherein one of the first helix and the second helix forms a right-handed screw and the other forms a left-handed screw on the central shaft.
A treatment vessel for treating lignocellulosic material comprises a main section having a first end and a second end, and an outlet section that is conical or frustoconical and tapers from a first end joined to the second end of the main section towards a second end having an outlet opening. A conical body is arranged within the treatment vessel, the vertex of the conical body pointing away from the main section. The conical body is positioned such that the base thereof is positioned within a perpendicular distance (d) from a transition plane (T) defined by the junction between the first end of the outlet section and the second end of the main section, wherein the perpendicular distance (d) is ¼ or less of the diameter (D) of the main section. A half angle (β) of the conical body is 0.5-20° less, preferably 5-15° less, such as 10° less, than a half angle (α) of the outlet section.
A method for continuously treating biomass material includes: feeding the biomass material into a substantially vertically arranged pressurized vessel; adding steam to said pressurized vessel for hydrothermal treatment of the biomass material, wherein said adding steam comprises adding steam at a lower portion of the pressurized vessel; discharging the biomass material from a bottom portion of the pressurized vessel using a discharge device; withdrawing vapor from a top portion of the pressurized vessel, and adding said vapor to the discharge device; controlling differential pressure between said top portion of the pressurized vessel and said discharge device by controlling a flow of said vapor; and determining a minimum flow of steam needed to heat the biomass material in the pressurized vessel to a predetermined temperature, wherein said adding steam comprises adding steam at a flow that is higher than said minimum flow.
A refiner disc of a refiner for refining of lignocellulosic material has an active surface configured to face another refiner disc when used in the refiner. active surface comprises a pattern of bars and grooves disposed in a plurality of pattern areas. The pattern areas are positioned side by side with each other to cover at least a part of the active surface.
A paper machine (1; 101; 201; 301) and a method for controlling the paper machine. Said paper machine comprises at least two dryness sensors (9a-p) which are positioned at separate positions of a machine direction, (MD), of the paper machine, said dryness sensors being configured for measuring a dryness profile over a cross direction, (CD), of the paper web (7). Said paper machine further comprises at least two drying devices (13a-e) positioned at separate positions of the machine direction, (MD), of the paper machine and configured for drying said paper web in said paper machine and a control unit (11) which is connected to the dryness sensors and to the drying devices, wherein said control unit is configured to control said drying devices such that a drying of the paper web performed by said drying devices is adjusted in dependence of said measured dryness profile of the paper web from at least two different positions along the machine direction, (MD).
The invention involves a method of winding a flexible web (15), e,g in the manufacturing of tissue products, and facilitates converting operations based on a web parent roll with a flexible web of paper or non-woven material. The method comprises rotating an engagement member (18) with a reel spool (26) to create a nip, advancing a web (15) into the nip and directing the web around the reel spool (26) to form a parent roll of increasing diameter. During the advancement of the web into the nip, one or more values of a caliper of the rolled- up web (IWC) in the parent roll are determined. The reel spool (26) may be moved in relation to the engagement member (18), or vice versa, in dependence of said determined caliper values.
The present invention relates to a water and air separation device (100) comprising—an entry portion (10) having a receiving inlet (11), —a guide portion (20) comprising—a housing (24), —a separation chamber (40), —an inlet (21), —a plurality of guide channels (12) for transporting whitewater spray into the separation chamber, —a liquid outlet (22), —a gas outlet (23), and wherein the guide portion (20) further comprises—a first separation plate (41) arranged to divide the separation chamber (40) into a first section (A) and a second section (B), so that a connecting passage (46) is formed for allowing whitewater to pass into the second section (B) underneath the first separation plate (41) and thereby separate the whitewater from air of the whitewater spray.
322S stripping process to solubilize non-process elements (NPE) accumulated in a lime cycle process in the Kraft pulp mill and removing the solubilized one or more non- process elements from the lime cycle process.
Described are a pulp bale press (1, 101), a method of pulp bale pressing and a pulp bale production line or system. The pulp bale press (1, 101) is for compressing pulp bales (12, 14) and comprises a base (2, 102); a top (4, 104) positioned opposite the base (2, 102) and connected to the base (2, 102); and a movable pressing element (6, 106, 506, 706) configured to move between the base (2, 102) and the top (4, 104), wherein the pulp bale press (1, 101) is configured to compress a first pulp bale (12) to be compressed between the base (2, 102) and the movable pressing element (6, 106, 506, 706), wherein the pulp bale press (1, 101) is further configured to compress a second pulp bale (14) to be compressed between the top (4, 104) and the movable pressing element (6, 106, 506, 706).
B30B 1/32 - Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
Described are a pulp bale press (1, 101), a method of pulp bale pressing and a pulp bale production line or system. The pulp bale press (1, 101) is for compressing pulp bales (12, 14) and comprises a base (2, 102); a top (4, 104) positioned opposite the base (2, 102) and connected to the base (2, 102); and a movable pressing element (6, 106, 506, 706) configured to move between the base (2, 102) and the top (4, 104), wherein the pulp bale press is configured to compress a first pulp bale (12) to be compressed between the base (2, 102) and the movable pressing element (6, 106, 506, 706) and to compress a second pulp bale (14) to be compressed between the top (4, 104) and the movable pressing element (6, 106, 506, 706), the movable pressing element (6, 106, 506, 706) is movably attached to the base (2, 102) via a first plurality of hydraulic cylinders (20, 22, 24, 120, 122, 124) comprising at least two hydraulic cylinders, and the movable pressing element (6, 106, 506, 706) is movably attached to the top (4, 104) via a second plurality of hydraulic cylinders (30, 32, 34, 130, 132, 134, 136) comprising an equal number of hydraulic cylinders as the first plurality of hydraulic cylinders (20, 22, 24, 120, 122, 124).
B30B 1/32 - Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
Method for handling one or more filtrates in a process for producing bleached pulp from recycled textile material comprising cellulose, or in a process for bleaching pulp formed from recycled textile material comprising cellulose, the process for producing or bleaching comprising washing (2, 4) and/or dewatering pulp to obtain washed and/or dewatered pulp and one or more filtrates The method comprises subjecting at least a portion of at least one of the filtrates to an ozone treatment step (5) to obtain at least one treated filtrate. The method further comprises recirculating at least a portion of the at least one treated filtrate to the process, and/or providing at least a portion of the at least one treated filtrate as an output for treatment in a wastewater treatment plant (6).
A method for bleaching pulp formed from recycled textile material comprising cellulose The method comprises subjecting the pulp to at least one bleaching stage (2), after a final bleaching stage of said at least one bleaching stage, washing (3) the pulp, and after said washing, acidifying (4) the pulp.
The present invention relates to a mixing assembly for controlling mixing of green liquor and a flocculation agent, the mixing assembly comprising a mixing vessel (20) having a first end and a second end, a vessel inlet (21) for supplying liquor and flocculation agent to the mixing vessel in a vicinity of the first end, a vessel outlet (22), a stirring device (31) that is rotatably arranged in the vicinity of the first end for mixing the liquor and flocculation agent by stirring, wherein the mixing vessel (20) has a length from a center of the vessel inlet to a center of the vessel outlet, and the mixing vessel also has a maximum width that is perpendicular to the length, and wherein said length is at least 1.5 times the maximum width. The invention also relates to a method for controlling flocculation of green liquor.
B01F 27/86 - Mixers with rotary stirring devices in fixed receptaclesKneaders with stirrers rotating about a substantially vertical axis co-operating with deflectors or baffles fixed to the receptacle
B01F 101/00 - Mixing characterised by the nature of the mixed materials or by the application field
A pulp mill comprising a cooking arrangement (1) arranged to receive wood chips and to subject the wood chips to a cooking process to produce pulp, a screening arrangement (2) arranged to receive pulp from the cooking arrangement, a reject handling arrangement (3a-b) connected to the screening arrangement to receive a reject therefrom, the reject handling arrangement being arranged to convey at least portion of the reject to storage means for disposal thereof, and a washing arrangement (4) connected to the screening arrangement, the washing arrangement being configured to wash at least a portion of an accept received from the screening arrangement The reject handling arrangement, the screening arrangement and the washing arrangement are arranged consecutively within an elongated area portion of the pulp mill, such as on an elongated platform. Furthermore, the cooking arrangement is disposed at a first long side of the area/platform.
A pulp mill comprising a screening arrangement (2) for screening pulp, a reject handling arrangement (3a-b) connected to the screening arrangement to receive a reject therefrom, the reject handling arrangement being arranged to convey at least portion of the reject to storage means for disposal thereof, and a washing arrangement (4) connected to the screening arrangement, the washing arrangement being configured to wash at least a portion of an accept received from the screening arrangement The reject handling arrangement, the screening arrangement and the washing arrangement are arranged consecutively within an elongated area portion of the pulp mill, such as on an elongated platform. An overhead or gantry crane (6a-c) arrangement is displaceable along a lengthwise direction of platform, the crane arrangement being configured to co-act with the screening arrangement, the washing arrangement and the reject handling arrangement.
The present invention relates to a method for treating green liquor in a green liquor treatment arrangement, wherein the method comprises—adding (101) a flocculation agent to green liquor to form flocculated green liquor,—supplying (102) the flocculated green liquor to a clarifying vessel for separating flocculated green liquor into flocculated matter and clear green liquor,—removing (103) flocculated matter through a sludge outlet, and—removing (104) clear green liquor from the clarifying vessel, wherein the method further comprises—measuring (201) a flocculation of the green liquor, wherein said measuring takes place after adding the flocculation agent but before supplying the flocculated green liquor to the clarifying vessel. The invention also relates to a green liquor treatment device.
Folding apparatus (1) for folding ends of wrapping material around a pulp bale, the folding apparatus comprising at least two folding arms (5a-d, 6a-b, 7a-d), each comprising a contact element (8a-d; 9a; 10a-b) at an end thereof, at least two electric actuators (11a-d, 11a'-d', 12a-b, 12a'-b', 13a-b, 13a'-b',14a-b, 14a'-b'), each being arranged to co-act with one or more of the folding arms to displace its contact element for making contact with the wrapping material to fold said wrapping material around an edge of the pulp bale, and a control unit (15) arranged in electrical contact with said at least two electric actuators, and arranged to determine, for each electric actuator, at least one operating parameter comprising a position parameter and/or a force parameter and/or a speed parameter, wherein said control unit is configured to control at least one electric actuator using said at least one operating parameter. A corresponding method is also provided.
B65B 57/16 - Automatic control, checking, warning or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged and operating to stop, or to control the speed of, the machine as a whole
B65B 59/00 - Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages or to give access for cleaning or maintenance purposes
B65B 59/02 - Arrangements to enable adjustments to be made while the machine is running
A method for updating a disc refiner by at least partly covering notches of a locknut in the disc refiner and an accessory for a disc refiner Said disc refiner comprising a motor and a rotation shaft assembly, wherein said rotation shaft assembly comprises a rotation shaft, which is connecting the motor and a rotor refiner disc of the disc refiner for driving rotation of the rotor refiner disc from the motor, said rotation shaft assembly further comprising at least one bearing, which is provided between a shaft housing and the rotation shaft for allowing rotation of the rotation shaft within the shaft housing, said rotation shaft assembly further comprising at least one ring-shaped locknut, which is encircling the rotation shaft and configured for holding the at least one bearing in place on the rotation shaft, said locknut comprising notches for a tool to grip when attaching the locknut in the rotation shaft assembly, wherein said accessory is configured for being attached to the locknut and comprises at least one covering part configured for at least partly covering said notches of the locknut when attached to the locknut.
A method for updating a disc refiner by at least partly covering notches (47) of a locknut (45) in the disc refiner and an accessory (51; 51'; 51'') for a disc refiner (100). Said disc refiner comprising a motor and a rotation shaft assembly (115), wherein said rotation shaft assembly (115) comprises a rotation shaft (15), which is connecting the motor and a rotor refiner disc (30) of the disc refiner for driving rotation of the rotor refiner disc (30) from the motor, said rotation shaft assembly (115) further comprising at least one bearing (16), which is provided between a shaft housing (41) and the rotation shaft (15) for allowing rotation of the rotation shaft (15) within the shaft housing (41), said rotation shaft assembly (115) further comprising at least one ring-shaped locknut (45), which is encircling the rotation shaft (15) and configured for holding the at least one bearing (16) in place on the rotation shaft (15), said locknut (45) comprising notches (47) for a tool to grip when attaching the locknut (45) in the rotation shaft assembly (115), wherein said accessory (51; 51'; 51'') is configured for being attached to the locknut (45) and comprises at least one covering part (53; 53'; 53'') configured for at least partly covering said notches (47) of the locknut (45) when attached to the locknut (45).
The present invention relates to a method for manufacturing a support body arrangement for an apparatus having an extended nip formed between the support body and a counter-pressure member, wherein the method comprises: providing a base body (51) comprising at least one pressure chamber configured to be pressurized for controlled expanding of the base body in a first direction; providing a support body (52) comprising a working surface (15) for forming an extended nip with a counter-pressure member; providing a mounting structure (53); mounting the support body (52) on the base body (51) by applying the mounting structure (53) so that movement of the support body (52) in relation to the base body (51) is prevented, wherein the support body (52) is placed on the base body (51) so that the working surface (15) faces away from the base body (51). The invention also relates to a support body arrangement.
The present invention relates to a support body (50) for a paper machine having an extended nip formed between the support body and a counter-pressure member, wherein the support body comprises—a base body (51) comprising an upper surface facing in the first direction, —a cover body (52) comprising a working surface (15) for forming an extended nip with a counter-pressure member, wherein the cover body (52) is mounted on the upper surface of the base body (51) such that the working surface faces in the first direction, and wherein the cover body (52) comprises a first material, said first material being a polymer. The invention also relates to a paper machine comprising a support body (50).
The invention relates to steel Yankee cylinders for tissue-making machines and tissue-making machines using such steel Yankee cylinders wherein the outer surface (9) of the cylindrical shell of the steel Yankee cylinder is formed by a steel of the grade P690 as defined in European Standard EN 10028-6:2017 or a similar steel.
A method for reducing the hemicellulose content of cellulose pulp obtained from a Kraft process, said method comprising subjecting the cellulose pulp to a cold caustic extraction, CCE, stage (1, 2) followed by a hot caustic extraction, HCE, stage (3, 4). A method for producing pulp from lignocellulose material is also provided, which method comprises subjecting the lignocellulose material to a kraft pulping process to obtain cellulose pulp and subjecting at least part of the cellulose pulp obtained from the kraft pulping process to the method for reducing the hemicellulose content of the cellulose pulp. A corresponding system is also provided.
The present invention relates to a system (200) and computer implemented method for monitoring the performance of at least one winding spool (120) in the reel section (100) of a paper machine, by detecting a unique identification code, ID, associated with the winding spool (120) from a marker (130) on the winding spool (120); identifying the winding spool (120) based on the unique identification code, ID; determining at least one winding spool performance parameter for the identified winding spool (120) based on measurements from at least one sensor (160); and determining if there is a failure of the performance of the identified winding spool (120) based on if the determined at least one winding spool performance parameter fulfils a requirement indicative of failure of the performance of the winding spool (120). The invention further includes a computer program comprising software for executing the method, a non-volatile data carrier, and a paper machine comprising the system.
B65H 26/02 - Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
B65H 18/26 - Mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers
72.
METHOD AND SYSTEM FOR BLEACHING PULP FROM RECYCLED TEXTILE MATERIAL
A method for bleaching pulp formed from recycled textile material comprising cellulose. The method comprises subjecting the pulp to a first bleaching stage (4), washing (5) the (bleached) pulp obtained from the first bleaching stage, and subjecting the (washed) pulp obtained from the washing to a second bleaching stage (8), wherein the first and second bleaching stages both comprise ozone bleaching. A corresponding system is also provided.
A method for bleaching pulp formed from recycled textile material comprising cellulose. The method comprises subjecting the pulp to a first bleaching stage (4; 14), washing (5; 15) the bleached pulp from the first bleaching stage, and subjecting the washed pulp from the washing to a second bleaching stage (8; 18), wherein the first bleaching stage comprises chlorine dioxide bleaching, and wherein said second bleaching stage comprises ozone bleaching. A corresponding system is also disclosed.
A method for bleaching pulp formed from recycled textile material comprising cellulose. The method comprises subjecting the pulp to a first bleaching stage (4; 14), washing (5; 15) the bleached pulp from the first bleaching stage, and subjecting the washed pulp from the washing to a second bleaching stage (8; 18), wherein the first bleaching stage comprises hydrogen peroxide bleaching, and wherein said second bleaching stage comprises ozone bleaching. A corresponding system is also disclosed.
A device and method of winding a web (W) of tissue paper or a non-woven material onto spools (2) to form a succession of web reels (3) on the spools (2) wherein the force in the winding nip (5) is measured and, as the diameter of the web reel (3) grows, the spool (2) on which the web reel (3) is wound is moved during winding along a horizontal plane such that, in the horizontal direction, the distance between the first supporting drum (4) and the spool (2) increases, and the second supporting drum (9) is moved vertically downwards to match the increasing size of the web reel (3) while maintaining contact with the web reel (3) to such an extent that a nip force between the web reel (3) and the second supporting drum (9) is maintained, and the first supporting drum (4) is moved vertically downwards as the diameter of the web reel (3) grows and moved to such an extent that the measured nip force in the winding nip (5) remains substantially at a set value or within the range of a predetermined upper and a predetermined lower value.
B65H 18/26 - Mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers
B65H 18/20 - Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web the web roll being supported on two parallel rollers at least one of which is driven
B65H 19/22 - Changing the web roll in winding mechanisms or in connection with winding operations
B65H 19/26 - Cutting-off the web running to the wound web roll
A method for producing a product comprising a porous metallic material and a product comprising a porous metallic material. Said method comprises the steps of: —building the porous metallic material of the product by additive manufacturing; and —polishing at least a part of a surface of said porous metallic material of said product by vibration polishing.
The invention relates to a method for bleaching pulp formed from recycled textile material comprising cellulose, said method comprising ozone bleaching (3; 13a, 13b) of said pulp by means of adding ozone at a charge of at least 12 kg/odt, wherein said ozone bleaching (13a, 13b) is performed as two subsequent steps, each comprising adding ozone at a charge such that the overall charge is at least 12 kg/odt.
Embodiments of the invention involve a machine (1) for producing a fibrous web, such as for tissue, for example paper tissue, the machine comprising a forming section (2) and a drying section (4, 5), wherein the machine is adapted to form a stream of combined air by combining exhaust streams from the forming section (2) and the drying section (4, 5), and to guide the stream of combined air to a combined air heat exchanger (7) adapted to transfer heat from the combined air to a fluid combined air to a fluid.
A turntable (1) for lifting and rotating a paper bale, The turntable (1) comprising a turning unit (3) comprising an upper part (4), a connecting section (5) and a lower part (6). The turntable further comprises an electrical motor (M) comprising a driving shaft (8). Further, the turntable (1) comprises a gear arrangement in driving engagement with the driving shaft (8) of the electrical motor, the connecting section (5) and/or the lower part (6) of the turning unit (3). The gear arrangement is configured to convert torque from the electrical motor (M) to a vertical movement and a rotating movement of the turning unit (3).
B65H 1/00 - Supports or magazines for piles from which articles are to be separated
B65B 11/04 - Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders the articles being rotated
B65B 25/14 - Packaging paper or like sheets, envelopes, or newspapers, in flat, folded, or rolled form
F16H 37/16 - Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these three types with a driving or driven member which both rotates or oscillates on its axis and reciprocates
80.
DEVICE FOR DEWATERING OR CLEANING A FABRIC IN A PAPER MACHINE, AND PAPER MACHINE COMPRISING SUCH A DEVICE
The present invention relates to a device for dewatering or cleaning a fabric in a paper machine, the device (1) comprising - a contact portion (2) arranged on a first side of the device (1) for contacting a fabric in a paper machine, - an air device (4) for transporting air to or from the fabric, the air device being operatively connected to at least one opening (3) in the first side for supplying or removing air through the at least one opening, and - a vibration generator (5) operatively connected to the contact portion and configured to cause a vibration of the contact portion during operation of the device. The invention also relates to a paper machine (100, 100') comprising at least one such device.
Method for processing a lignocellulose biomass material with a moisture content below 10 weight-%. The method comprising thermally treating (1) the lignocellulose biomass material with steam at elevated pressure and temperature in at least one reactor; steam explosion discharging (2) the lignocellulose biomass material and blow steam from the at least one reactor; forming (3) pellets and/or briquettes from at least part of the discharged thermally treated lignocellulose biomass material. The method further comprises, prior to said thermally treating, adding (4) an acid catalyst to the lignocellulose biomass material. A corresponding system is also provided.
The invention relates to a pulp bale conveyor system (1) comprising a pulp bale conveyor (2) comprising at least one beam (4), at least one endless chain (6) mounted on said beam, a motor unit (10) operatively connected to said chain, and a chain tensioning device (16) comprising a tensioning member (24) comprising a curved surface (24a), which tensioning member is slidably arranged, and a spring (30; 51) operatively connected to said tensioning member to urge said tensioning member in a chain tensioning direction. The system also comprises a position sensor (101) configured to measure or detect a position of the tensioning member (24) a control unit (100) configured to receive, in processing circuitry, information indicative of the position of the tensioning member (24) from the position sensor (101), and determine, in processing circuitry, if adjustment of the pulp bale conveyor (2) is needed based at least on the received information. The invention also relates to a method for controlling the pulp bale conveyor system (1).
A mounting system for a laser detection sensor in a ductwork for the detection of unburnt fuel is provided. The mounting system includes a laser transmitter mount configured to provide adjustment of a laser transmitter and a laser receiver mount configured to provide adjustment of a laser receiver. The mounting system also includes a laser path extending between the laser transmitter and the laser receiver that includes an entrance port in the ductwork and an exit port in the ductwork. The mounting system also includes a flexible joint in the mounting system, where the flexible joint is configured to isolate at least one of the laser transmitter and the laser receiver from movement of the ductwork.
D06F 58/26 - Heating arrangements, e.g. gas heating equipment
D06F 58/50 - Responding to irregular working conditions, e.g. malfunctioning of blowers
G01N 21/39 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
A beam for a chain conveyor and a chain conveyor, said beam being configured for supporting a running chain of the chain conveyor along a length of the chain conveyor, wherein said beam comprises: - a middle section having a rectangular shape with a length, L1, and a width, W1, said rectangular shape being defined by a first short side and an opposite second short side and a first long side and an opposite second long side; and - a first and a second side section both extending along the length, L1, of the middle section, whereby the first side section is connected to the first long side of the middle section and the second side section is connected to the second long side of the middle section, wherein the first and the second side sections extend from the middle section in essentially opposite directions and substantially 90˚ in relation to the middle section.
B65G 17/06 - Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriersEndless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms
B65G 21/02 - Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors consisting essentially of struts, ties, or like structural elements
B65G 21/06 - Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors consisting essentially of struts, ties, or like structural elements constructed to facilitate rapid assembly or dismantling
85.
COOLING SHIELD FOR A LIQUOR INJECTION PIPE OF A LIQUOR GUN, LIQUOR GUN SYSTEM COMPRISING THE COOLING SHIELD, AND METHOD FOR COOLING A LIQUOR INJECTION PIPE IN A LIQUOR GUN SYSTEM
A cooling shield for a liquor injection pipe of a liquor gun for supplying liquor to a combustion chamber of a recovery boiler, which has a first and a second side edge, the side edges extending in a longitudinal direction (L) of the cooling shield, and a first end edge and a second end edge extending between the side edges, the cooling shield comprising an outside shield wall, and an inside shield wall, the outside shield wall and the inside shield wall being connected along the side edges of the cooling shield, the cooling shield comprising a cooling medium space being arranged between the outside shield wall and the inside shield wall, the cooling shield comprising a cooling medium inlet and a cooling medium outlet the cooling medium inlet and the cooling medium outlet being arranged in communication with the cooling medium space.
F23D 11/36 - Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space Details
F23G 7/04 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of specific waste or low grade fuels, e.g. chemicals of waste liquors, e.g. sulfite liquors
METHOD AND ARRANGEMENT FOR PRODUCING A GLUE POWDER FOR FIBERBOARD PRODUCTION, AND METHOD FOR PRODUCING FIBERBOARD AND FIBERBOARD MANUFACTURING ARRANGEMENT
The present invention relates to a method for producing fiberboard or glue powder for fiberboard production, comprising - supplying (11) lignocellulosic material (LM) to a reactor (1), - treating (12) the lignocellulosic material (LM) in the reactor (1), - discharging (13) the lignocellulosic material (LM) from the reactor (1) through an outfeed unit (2) to a pressure drop unit (3) that comprises a receiving portion (32) held at a lower pressure for causing steam explosion of the lignocellulosic material (LM) to create steam exploded fibers, and drying and pressing the steam exploded fibers to fiberboard or alternatively providing the steam exploded fibers as a glue powder. The invention also relates to a manufacturing arrangement.
A pre-hydrolysis pressure vessel system includes; a material inlet for receiving biomass material to be treated in the pre-hydrolysis pressure vessel system and a material outlet for expelling treated biomass material out from the pre-hydrolysis pressure vessel system; a transport screw arrangement including a transport screw provided inside an enclosing housing of the transport screw arrangement, said transport screw being configured for transporting biomass material through the enclosing housing towards the material outlet of the pre-hydrolysis pressure vessel system. The enclosing housing includes a cleaning arrangement that includes: at least one elongated fluid channel positioned in connection with an inner wall of the enclosing housing and wherein said at least one elongated fluid channel comprises a number of fluid outlets, and at least one cleaning fluid inlet which is provided through the enclosing housing in fluid connection with the at least one fluid channel.
A method and a cleaning system for cleaning a screw conveyor in a system for treatment of biomass material, said method comprising the steps of:- feeding biomass material to be transported by the screw conveyor, into a conveyor housing enclosing a screw blade of the screw conveyor;- repeatedly or continuously measuring a value of a parameter being representative of a torque acting on a central shaft of the screw conveyor for rotating it;- comparing said measured value with a predefined upper threshold value; and- starting a cleaning session when said measured value is larger than said predefined upper threshold value, wherein said cleaning session comprises cleaning at least a part of the screw conveyor with a cleaning fluid.
A method for managing and controlling nitrogen emission from a cyclic liquor flow system in a pulp mill (1), the pulp mill (1) comprising a recovery system (20) for recovering heat and chemicals from a pulping process (30), the recovery system (20) comprising a recovery boiler (8) and a nitrogen oxide scrubber (15), the nitrogen oxide scrubber (15) being arranged to remove nitrogen oxide from flue gas (16) from the recovery boiler (8), the method comprising the steps of: —exposing flue gas (16) from the recovery oiler (8) to an oxidizing agent, thereby oxidising nitrogen oxide in the flue gas (16) to higher nitrogen oxides; —contacting the flue gas (16) with an alkaline aqueous scrubber liquid (17) in the nitrogen oxide scrubber (15), thereby absorbing the nitrogen oxides in the scrubber liquid (17) and producing a nitrogen containing scrubber liquid (17); —introducing all or a part of the nitrogen containing scrubber liquid (17) into the cyclic liquor flow system. An arrangement for managing and controlling nitrogen emission from a cyclic liquor flow system in a pulp mill (1) is also disclosed.
A chip chute for transporting wood chips includes: first, second, third, and fourth planar lateral walls defining an open area having a rectangular cross-section, with an inlet opening configured to receive the wood chips, wherein the first and second planar lateral walls oppose each other and extend in a height (H) direction and a first length (Li) direction, and wherein the third and fourth planar lateral walls oppose each other and extend in the height (H) direction and a second length (L2) direction perpendicular to the first length (L1) direction; a curved bottom wall that is located at a bottom of the planar lateral walls and curves from the first planar lateral wall to the second planar lateral wall; and a cylindrical outlet tube protruding laterally from one of the planar lateral walls and configured to discharge the wood chips.
A through-air apparatus for drying, curing, or bonding paper or non-woven products is provided. The apparatus includes a through-air roll configured for rotational movement about a first axis, where the through-air roll is configured to carry a web. The apparatus also includes a hood at least partially enclosing the through-air roll, and a cooling system positioned adjacent the through-air roll. The cooling system is configured to provide cool air to a web as the web leaves the through-air roll, and all of the cooling system is external to the through-air roll.
D06B 5/08 - Forcing liquids, gases, or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating through moving materials of indefinite length through fabrics
A method for processing biomass material comprising washing (1) the biomass material in one or more washing stages, feeding (3) the washed biomass material to at least one pressurized reactor, thermally treating (4) the biomass material at elevated pressure and temperature by means of adding steam to the at least one reactor, discharging (6) the biomass material and blow steam from the at least one reactor by means of steam explosion discharge, separating (7) the blow steam from the discharged thermally treated biomass material, condensing (8) at least part of the separated blow steam to obtain an acidic condensate, and recirculating (10) at least a portion of said acidic condensate to at least one of the washing stages. A corresponding system is also provided.
A vertical-tube thermosyphon evaporator (20) for evaporation of an evaporable fluid (b) by means of a heating fluid (a), the evaporator comprising a plurality of vertically extending tubes (4) enclosed by an evaporator shell (3) and extending from an upper tube plate (1) located in a upper part (20') of the evaporator (20) to a lower tube plate (2) located in a lower part (20'') of the evaporator. The tubes (4) are mounted in the tube plates (1,2) and are separated from a central fluid reservoir (10) in the evaporator (20) by a tubular inner fluid reservoir wall (11). The tubes (4) are arranged in a heat-exchange space (18) formed between the evaporator shell (3) and the central fluid reservoir (10) is in fluid communication with the heat-exchange space (18) at a lower part of the heat-exchange space (18) and is in fluid communication with the heat-exchange space (18) at an upper part of the heat-exchange space (18). The evaporator (20) comprises a first inlet (16) for introducing the heating fluid (a) into the tubes (4) and a second inlet (5) for introducing the evaporable fluid (b) into the central fluid reservoir (10) and/or into the heat-exchange space (18).
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
94.
CONTINUOUS STEAM EXPLOSION METHOD AND A DEFIBRATION SYSTEM
The present invention relates to a method for defibrating a lignocellulosic material in a steam explosion process, the method comprising: —supplying (1001) lignocellulosic material to a reactor (8), —treating (1002) the lignocellulosic material in the reactor (8) at a first pressure (P1), —discharging (1003) the lignocellulosic material from the reactor (8) to a vessel (13), wherein the vessel (13) is at a second pressure (P2) that is lower than the first pressure (P1) so that the lignocellulosic material is defibrated through steam explosion as it passes from the reactor (8), wherein lignocellulosic material is continuously supplied to and discharged from the reactor (8) in such a way that the first pressure (P1) is constant. The invention also relates to a defibration system for defibrating a lignocellulosic material in a steam explosion process.
The present invention relates to a crescent former for producing tissue paper, the former comprising a forming section (A), a press section (B) and a drying section (C), wherein the crescent former further comprises a felt fabric (41) for carrying the stock from the forming nip (15) of the forming section (A) to the press nip (22) of the press section (B), and the felt fabric (41) being configured to carry the stock to the press nip (22) where the stock is transferred to the drying section (C), wherein further the felt fabric (41) is configured to be returned from the press nip (22) to the forming nip (15) in a return section (D) such that the felt fabric (41) forms an endless loop, wherein the return section (D) comprises a cleaning station (42), of which at least a part is arranged in a negative machine direction (−MD) in relation to a center line (R) of the forming roll (12).
A device and a method for weighing a roll of continuous web material on a spool at a weigh-ing station in a continuous process is described, which has fewer mechanical parts and is safer to use than prior devices and methods. The device is arranged adjacent to at least one of a pair of guide rails and comprises a damper and a load cell, wherein the load cell is integrated into at least one guide rail.
G01G 17/02 - Apparatus for, or methods of, weighing material of special form or property for weighing material of filamentary or sheet form
G01G 19/04 - Weighing apparatus or methods adapted for special purposes not provided for in groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing railway vehicles
D21G 9/00 - Other accessories for paper-making machines
A through-air apparatus for drying, curing, or bonding paper or non-woven products is provided. The apparatus includes a through-air roll configured for rotational movement about a first axis, where the through-air roll is configured to carry a web. The apparatus also includes a hood at least partially enclosing the through-air roll, and a cooling system positioned adjacent the through-air roll. The cooling system is configured to provide cool air to a web as the web leaves the through-air roll, and all of the cooling system is external to the through-air roll.
A vessel (10) for holding lignocellulosic material (2) comprises a wall (12) enclosing an interior volume (14) for holding the lignocellulosic material (2),and an outlet (50) arranged in the wall (12), preferably in a bottom wall (20), for discharging the lignocellulosic material (2) from the interior volume (14). A vibrator body (60) is positioned within the vessel (10) in the interior volume (14) and is provided with a vibrator (100), the vibrator body (60) being configured to be movable within the vessel (10) when the vibrator (100) is actuated to cause the vibrator body (60) to vibrate. Actuation of the vibrator (100) prevents or breaks up bridging of the lignocellulosic material (2) and facilitates discharge thereof. A method of discharging lignocellulosic material and a method of modifying a vessel for holding lignocellulosic material are also disclosed.
A liquid distributor (110) in an apparatus for washing cellulose pulp, the liquid distributor comprising a plurality of inlet orifices (111a-b) distributed along a longitudinal direction of the liquid distributor. Each inlet orifice is provided with flow directing means (112) forming a slot for each inlet orifice, the slot having a tangential opening (114) facing in a tangential direction of the press roll, the opening being arranged adjacent the chamber wall (105) to direct the flow along a chamber wall of the apparatus. The flow directing means of at least two adjacent inlet orifices may form longitudinally adjacent slots being separated by means of a separating wall. Alternatively, the flow directing means (112) are provided with one or more lateral openings (121) between their slots, the one or more lateral openings having an overall effective flow area which is less than twice the effective flow area of each tangential opening.
A method of applying a long lasting wear-resistant coating on a Yankee drying cylinder (1), the method comprises: the step of providing a Yankee drying cylinder (1) having a cylindrical shell (2) with a circular cross-section and an outer surface (3); the step of performing a thermal spray operation to form a wear-resistant coating layer (4) on the outer surface of the Yankee drying cylinder (1) during which thermal spray operation coating feedstock (6) is fed to at least one spray device (5), heated to become plastic and/or semi-molten and/or molten and sprayed onto the outer surface (3) of the Yankee drying cylinder (1) to form the wear-resistant coating layer (4), the coating feedstock (6) for the thermal spray operation consisting of:1.5 to 2.5 weight per cent Al 0.0 to 0.2 weight percent Ti,9.5 to 10.5 weight percent Si, 0.0 to 0.2 weight percent B, 12.5 to 14.2 weight percent Mo, 0.0 to 0.2 weight percent V, 0.0 to 0.2 weight percent C, 0.000 to 0.020 weight percent Cr, 4.5 to 6.0 weight percent Mn, 0.0 to 0.2 weight percent Mg, 0.0 to 0.2 weight percent Ni, 0.0 to 0.2 weight percent Nb,the remainder being iron and impurities.Coatings and Yankee cylinders with such coatings are also disclosed.
C23C 24/08 - Coating starting from inorganic powder by application of heat or pressure and heat
C23C 28/02 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of metallic material
C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
C23C 30/00 - Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
