The drum reactor according to the invention for powdery, granular, or fragmented material having at least one drive for rotating the drum reactor about the longitudinal axis of said drum reactor is characterized in that the drive is composed of at least two linear drives for rotating the drum reactor and a control device for individually activating the linear drives for the purpose of continuous rotational motion. In the method according to the invention for rotating a drum reactor about the longitudinal axis of said drum reactor, at least two linear drives are used to rotate the drum reactor, the linear drives being individually activated by means of a control device for the purpose of continuous rotational motion.
The invention is implemented in terms of the device on the one hand by a tubular burner for an industrial furnace, which has at least one annular first feed channel for a combustion gas and at least one radially further inwardly arranged second feed channel for fuel, wherein the two channels open out in a burner face. Also provided is at least one carrying-air feed opening, which is arranged in the burner face underneath the second feed channel for fuel and between the first and second feed channels and extends only in the lower half of the burner face. According to an alternative configuration, the tubular burner for an industrial furnace has at least one annular first feed channel for a combustion gas and at least one radially further inwardly arranged second feed channel for fuel, wherein the two channels open out in a burner face and the surface area of the opening of the first feed channel is larger in the lower half of the burner face than in the upper half of the burner face.
F23D 17/00 - Burners for combustion simultaneously or alternately of gaseous or liquid or pulverulent fuel
F23L 7/00 - Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
F23D 14/22 - Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
F23D 1/00 - Burners for combustion of pulverulent fuel
3.
Method and system for separating mercury from waste gases of a cement production process
In the method according to the invention for separating mercury from waste gases of a cement production process, the mercury is sorbed on a sorbent, the sorbent is subsequently discharged from the process and supplied to a discharge reactor which is operated with a carrier gas. The sorbent is heated there to temperatures of more than 250° C. so that the mercury is discharged from the sorbent and changed into the gas phase, the gas of the discharge reactor that has accumulated mercury subsequently having the dust removed from it in a preliminary dust removal device, and only a part-flow of the gas which has been enriched and had the dust removed from it in this manner being drawn off at high temperatures and cleaned in a subsequent sorption stage, whilst the remaining part-flow is brought to the temperature required for the discharge of the mercury in the discharge reactor in a heat transfer system and is again supplied as a carrier gas to the discharge reactor.
B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
4.
DEVICE AND METHOD FOR DRYING AND TORREFYING AT LEAST ONE CARBON-CONTAINING SUBSTANCE STREAM IN A MULTIPLE-HEARTH FURNACE
The device according to the invention for drying and torrefying at least one carbon-containing substance stream in a multiple-hearth furnace substantially consists of a drying zone, which has a supplying device for supplying a carbon-containing substance stream, an outlet for removing a water-vapour-containing drying gas stream and an inlet for returning at least part of the drying gas stream, a torrefying zone for degassing the substance stream dried in the drying zone, which has an outlet for discharging a torrefied substance stream, at least one inlet for an exhaust gas and an outlet for a torrefying gas stream, a heat exchanger for heating up the drying gas stream, wherein the outlet of the drying zone is in connection with the inlet of the drying zone via the heat exchanger, a combustion unit, wherein the outlet of the torrefying zone is connected to the inlet of the torrefying zone via the combustion unit and the heat exchanger, wherein a torrefying gas stream removed via the outlet of the torrefying zone is burned in the combustion unit and the exhaust gas thereby produced is used in the heat exchanger for heating up the drying gas stream and is supplied to the torrefying zone, wherein the drying zone and the torrefying zone have two gas circuits that are separate from one another.
C10B 7/02 - Coke ovens with mechanical conveying means for the raw material inside the oven with rotary scraping devices
C10B 49/02 - Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge
C10B 53/02 - Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
F26B 17/00 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
F26B 23/02 - Heating arrangements using combustion heating
F27B 9/18 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatmentFurnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path under the action of scrapers or pushers
C10L 5/40 - Solid fuels essentially based on materials of non-mineral origin
5.
PROCESS FOR PRODUCING REACTIVE QUICKLIME FROM CHALK
In the process of the invention for producing reactive quicklime by drying and/or preheating and/or precalcining and firing chalk, the chalk is shaped to form compact shaped bodies having a green strength of > 100N. The shaped bodies are introduced into a vertical bed through which constant flow can occur and are subsequently preheated and/or fired in the vertical bed.
The roller mill according to the invention substantially consists of a grinding plate (1), at least one grinding roller (2, 3) that is in rolling engagement with the grinding plate, a main drive system for driving the grinding roller and/or grinding plate, and an auxiliary drive (60, 61, 62, 63, 64) for driving the grinding plate. The auxiliary drive comprises at least two linear drives (61, 62, 63, 64) for rotating the grinding plate and a control device (7) for individually actuating the linear drives for the purpose of uninterrupted rotational movement.
The method according to the invention for reprocessing the worn surface of grinding rollers (2) of a material bed roller mill comprises the following method steps: a. providing a mobile processing station (6) which is arranged in a container (8) and comprises at least one machine tool (9) and a drive (10) for rotating the grinding roller, b. removing the complete roller unit (A) containing the grinding roller to be reprocessed from the material bed roller mill, c. positioning the complete roller unit in front on the mobile processing station and coupling the drive to the shaft (1) of the grinding roller, d. producing a new cylindrical surface (2h) using the machine tool, and e. producing a new wear protection comprising new profiled bodies (2c) and/or build-up welding.
The drive according to the invention for a rotary drum substantially consists of a. a toothed ring, which can be fastened on the outer circumferential side of the rotary drum for rotation therewith, b. a pinion in meshing engagement with the toothed ring and arranged on a drive shaft for rotation therewith and for tilting movement, wherein the pinion is secured with its drive shaft in such a way that it can perform a pivoting movement in relation to the toothed ring, and c. a drive motor for driving the drive shaft. Furthermore, apart from the meshing engagement, the pinion is also in interlocking rolling contact with the toothed ring.
F16C 13/00 - Rolls, drums, discs, or the likeBearings or mountings therefor
F23G 5/20 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels with combustion in rotating or oscillating drums
9.
PROCESS FOR THE THERMAL TREATMENT OF CEMENT RAW MEAL IN A REACTION SPACE
In the process of the invention, cement raw meal is thermally treated in a reaction space, wherein the reaction space has a bottom having a plurality of compressed air nozzles for the transport of fuels located on the bottom, the compressed air nozzles are arranged both next to one another and behind one another in the transport direction and are divided into separately controllable groups of one or more compressed air nozzles, the compressed air nozzles of one group are activated simultaneously and the following process steps are provided: a. introduction of cement raw meal, b. introduction of fuel, c. addition of combustion air, d. discharge of the offgases formed together with the thermally treated cement raw meal and e. activation of the compressed air nozzles for transport of the fuels located on the bottom. All groups of the compressed air nozzles are activated sequentially over time, with the order being selected so that the predominant part of the immediately successive activations over time is effected by groups which are not directly adjacent in or transverse to the transport direction.
F23G 5/26 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels with combustion in a vertical, substantially cylindrical, combustion chamber having rotating bottom
The method according to the invention for producing cement clinkers consists substantially of the following method steps: preheating the raw cement material in a preheater, further heating the preheated material in a calcination zone while supplying combustion air, and burning the material heated in this manner in a furnace to form cement clinkers, wherein a part of the waste gases developing in the furnace is used to preheat the raw cement material in the preheater, while another part is diverted and used in a heat exchanger to preheat the combustion air used in the calcination zone.
C04B 7/38 - Preparing or treating the raw materials individually or as batches
C04B 2/10 - Preheating, burning, calcining or cooling
C04B 7/60 - Methods for eliminating alkali metals or compounds thereof
F23J 11/00 - Devices for conducting smoke or fumes, e.g. flues
F23J 15/00 - Arrangements of devices for treating smoke or fumes
F23B 70/00 - Combustion apparatus characterised by means for returning solid combustion residues to the combustion chamber
F23B 80/02 - Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for returning flue gases to the combustion chamber or to the combustion zone
F23C 9/00 - Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
F23N 5/02 - Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
12.
Method for monitoring a grinding system and grinding system comprising a monitoring device
The invention relates to a method for monitoring the load state of a grinding system having rotating grinding elements, the dynamic forces exerted by the grinding stock on the grinding elements being detected in a first frequency range which contains the fundamental oscillation of the grinding elements, and in a second frequency range in which the first harmonic of the fundamental oscillation occurs, and measures for reducing the load state being introduced when the first harmonic exceeds a predetermined threshold value in relation to the magnitude of the fundamental oscillation. Such a method permits very reliable and accurate monitoring of the load state of the grinding system.
A roller mill includes a rotatable grinding table, at least one grinding roller that is retained rotatably on a pivot lever and is in rolling engagement with the grinding table, with the pivot lever being arranged for pivoting about a pivot lever axis, and a drive train associated with the grinding roller in order to drive the grinding roller with a fixed motor.
In the method according to the invention for producing slag granulate and for recuperating heat from liquid melts, the liquid melt is firstly quenched and granulated using a liquid cooling medium and subsequently cooled further by means of a gaseous cooling medium, wherein at least the heat of the heated gaseous cooling medium is recuperated. The quenching and granulation of the melt is realized here by the impetus of the liquid cooling medium as it makes direct contact with the melt. Furthermore, only such an amount of liquid cooling medium is used to quench the melt that a vitreous solidification of the melt in the granulate only just occurs.
In the method according to the invention for the reduction of nitrogen oxides in dust-containing exhaust gases by means of an SCR catalytic converter, the exhaust gases, before they enter into the catalytic converter, are conditioned by means of the agglomeration of dust particles to a minimum size which is such that the dust particle agglomerates conducted through the catalytic converter neither block nor deactivate the porous surface of the catalytic converter.
In the method according to the invention for the selective catalytic denitrogenization or utilization of dust-containing exhaust gases, it is sought to prevent dust accumulations in a treatment device (catalytic converter, waste heat boiler or heat exchanger) through which a dust-containing exhaust gas flows, wherein the treatment device has surface regions which come into contact with the dust-containing exhaust gas. Here, the dust contained in the exhaust gas is electrostatically charged before it flows through the treatment device, and those surface regions which come into contact with the dust-containing exhaust gas are held at a potential with the same polarity as the potential of the charged dust.
F28F 19/00 - Preventing the formation of deposits or corrosion, e.g. by using filters
B03C 3/08 - Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
17.
METHOD AND SYSTEM FOR SEPARATING MERCURY FROM WASTE GASES OF A CEMENT PRODUCTION PROCESS
According to the invention, in a method for separating mercury from waste gases of a cement production process, the mercury is absorbed by a sorbent and then the sorbent is discharged from the process and fed to an expulsion reactor operated with a carrier gas. There, the sorbent is heated to temperatures of more than 250ºC, whereby the mercury is expelled from the sorbent and converted into the gas phase, wherein the gas of the expulsion reactor enriched with mercury is then dedusted in a preliminary dedusting unit and only a sub-stream of the gas enriched and dedusted in this way is withdrawn at high temperatures and scrubbed in a downstream sorption stage, while the remaining sub-stream is heated in a heat transfer system to the temperature required for expelling the mercury in the expulsion reactor and fed again to the expulsion reactor as a carrier gas.
B01D 53/10 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents with dispersed adsorbents
C04B 7/36 - Manufacture of hydraulic cements in general
18.
METHOD AND PLANT FOR THE HEAT TREATMENT OF FINE-GRAINED MATERIAL
In the method according to the invention for the heat treatment of fine-grained material, the material is preheated in a preheater in a counter current to hot waste gases and is subsequently calcined and/or baked. The dust content of the waste gases from the preheater is reduced in a dust separator before the waste gas is fed to a heat exchanger/waste heat boiler for heat recuperation and/or to a catalyst for denitrification. The dust content of the waste gas is reduced to a value of 1 to 10 g/Nm3 in the dust separator.
The invention relates to a method and to a system for utilizing gaseous and/or solid components in exhaust gases, wherein the exhaust gas is added to at least one bioreactor or incoming and/or outcoming lines thereof and microalgae are raised in a nutrient medium in said bioreactor, characterized by one or more of the following controls: - the size of the microalgae is adjusted by controlling the carbon monoxide content in the exhaust gas and/or - the pH-value of the nutrient medium is controlled by dust contained in the exhaust gas and/or by feeding dust previously separated from the exhaust gas.
The system according to the invention for thermally processing lumpy solid material substantially comprises a preheating device, a furnace and a separation or classification device which is arranged therebetween and which has a coarse material outlet connected to the furnace and a fine material outlet. The furnace and the preheating device are connected to each other by means of a gas/solid material line which is arranged so as to be inclined relative to the vertical, the furnace exhaust gases being introduced at the end of the gas/solid material line at the furnace side and the preheated solid material being supplied at the end at the preheater side. The separation or classification device is connected to a bypass line which branches off from the gas/solid material line so that at least a partial amount of the preheated solid material can be branched off via the bypass line by means of gravitational force and can be supplied to the separation or classification device.
The system according to the invention for heat treating lumpy solids substantially comprises a preheating device, a furnace and a separation or classification device arranged therebetween, which has a coarse material outlet connected to the furnace and a fine material outlet. The furnace and the preheating device are connected to each other by way of a gas solid line which is arranged in a sloped manner with respect to the vertical line, wherein at the end on the furnace side of the gas solid line the exhaust gases of the furnace are introduced and at the end on the preheater side the preheated solids are fed. The separation or classification device is connected to a bypass line branching off the gas solid line such that at least a subset of the preheated solids, by way of the bypass line, can be branched off and supplied to the separation or classification device by means of gravity.
The invention relates to a roll mill having a grinding plate rotatable about an axis of rotation, at least one grinding roller in rolling engagement with the grinding plate, and a main drive for driving the grinding plate. An auxiliary drive for driving the grinding plate, and a regulating device are also provided, the regulating device including at least one damping regulator which regulates the auxiliary drive in dependence on torque variations of the main drive and/or variations in the speed of rotation of the grinding plate.
The invention relates to a roller mill having at least one mill roller and a rotatable mill platen, which are arranged in a mill inner space, and a moment arm which is retained so as to be pivotably movable and rotationally secure in a bearing, with the mill roller being supported in a rotatable manner at one end of the moment arm and there further being provided means for applying a force to the moment arm comprising a pressure cylinder which is in operative contact with the moment arm in order to adjust the mill pressure which is applied by the mill roller. The contact location, at which the force of the pressure cylinder is transmitted to the moment arm, is located outside the mill inner space.
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