The present invention relates to a method and to a device for continuous cleaning of process water circulating in a device for treating waste paper. The process water is supplied, from a unit of the device, to an anaerobic reactor comprising a gas separator, and the cleaned process water is returned back to a unit of the device, wherein this unit is selected from: a pulper; screening device; dewatering unit; oxidation/reduction unit; centrifugal screening device; fine screening device; paper-machine mould section; paper-machine press section; reject treatment unit; fibre recovery unit; and drying section; wherein the content of inorganic solids in the reactor is measured and, if this content exceeds a pre-set limit value, process water from the reactor is continuously fed to a solid-liquid separator for separation into a fraction that is depleted of inorganic solids and a fraction that is enriched with inorganic solids, wherein the fraction that is depleted of inorganic solids is returned to the anaerobic reactor and the fraction that is enriched with inorganic solids is conveyed away out of the device, until the content of inorganic solids in the process water is less than the limit value.
The present invention relates to a method for cleaning process water circulated in a paper recycling system, comprising a process water treatment step, which comprises at least one pre-acidification step and at least one anaerobic cleaning step, wherein at least some of the process water to be cleaned is subjected to hydrolysis and acidification in the at least one pre-acidification step and the process water thus treated is then brought into contact with anaerobic microorganisms in the at least one anaerobic cleaning step in order to break down impurities in the process water, wherein at least one saccharide-splitting enzyme is added to the process water before or during the pre-acidification step, and the pH of the process water is set to 8.0 or lower at least during the at least one pre-acidification step and during the at least one anaerobic cleaning step.
The present invention relates to a method and to a device for continuous cleaning of process water circulating in a device for treating waste paper. The process water is supplied, from a unit of the device, to an anaerobic reactor comprising a gas separator, and the cleaned process water is returned back to a unit of the device, wherein this unit is selected from: a pulper; screening device; dewatering unit; oxidation/reduction unit; centrifugal screening device; fine screening device; paper-machine mould section; paper-machine press section; reject treatment unit; fibre recovery unit; and drying section; wherein the content of inorganic solids in the reactor is measured and, if this content exceeds a pre-set limit value, process water from the reactor is continuously fed to a solid-liquid separator for separation into a fraction that is depleted of inorganic solids and a fraction that is enriched with inorganic solids, wherein the fraction that is depleted of inorganic solids is returned to the anaerobic reactor and the fraction that is enriched with inorganic solids is conveyed away out of the device, until the content of inorganic solids in the process water is less than the limit value.
C02F 103/28 - Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
4.
METHOD FOR CONTINUOUS CLEANING OF PROCESS WATER IN WASTE PAPER TREATMENT, WITH CONTROL OF THE CONTENT OF INORGANIC SOLIDS
The present invention relates to a method and to a device for continuous cleaning of process water circulating in a device for processing waste paper. The process water is supplied, from a unit of the device, to an anaerobic reactor comprising a gas separator, and the cleaned process water is returned back to a unit of the device, wherein this unit is selected from: a pulper; screening device; dewatering unit; oxidation/reduction unit; centrifugal screening device; fine screening device; paper¬machine mold part; paper-machine press part; reject treatment unit; fiber recovery unit; and drying part; wherein the content of inorganic solids in the reactor is measured and, if this content exceeds a pre-set limit value, process water from the reactor is continuously fed to a solid-liquid separator for separation into a fraction that is depleted of inorganic solids and a fraction that is enriched with inorganic solids, wherein the fraction that is depleted of inorganic solids is returned to the anaerobic reactor and the fraction that is enriched with inorganic solids is conveyed away out of the device, until the content of inorganic solids in the process water is less than the limit value.
Method and apparatus for drying preferably a moving material web by means of at least one drying device heated by means of biogas and comprising infrared radiators
A method for producing an object, wherein the method comprises drying the object or a primary product thereof, the object or a primary product thereof being at least partially dried in at least one drying device, wherein at least one of the at least one drying units contains at least one infrared radiator which is at least partially heated by means of biogas, a combustion gas selected from the group consisting of oxygen, air or other oxygen-containing gases is added to the biogas before said biogas is supplied to the at least one infrared radiator in order to heat said at least one infrared radiator, and the oxygen content in the waste gas resulting from the at least one infrared radiator being heated by means of the biogas is measured by means of a measuring device and the amount of combustion gas added to the biogas.
The present invention relates to a method for cleaning process water circulated in a paper recycling system, comprising a process water treatment step, which comprises at least one pre-acidification step and at least one anaerobic cleaning step, wherein at least some of the process water to be cleaned is subjected to hydrolysis and acidification in the at least one pre-acidification step and the process water thus treated is then brought into contact with anaerobic microorganisms in the at least one anaerobic cleaning step in order to break down impurities in the process water, wherein at least one saccharide-splitting enzyme is added to the process water before or during the pre-acidification step, and the pH of the process water is set to 8.0 or lower at least during the at least one pre-acidification step and during the at least one anaerobic cleaning step.
The present invention relates to a method for cleaning process water circulated in a paper recycling system, comprising a process water treatment step, which comprises at least one pre-acidification step and at least one anaerobic cleaning step, wherein at least some of the process water to be cleaned is subjected to hydrolysis and acidification in the at least one pre-acidification step and the process water thus treated is then brought into contact with anaerobic microorganisms in the at least one anaerobic cleaning step in order to break down impurities in the process water, wherein at least one saccharide-splitting enzyme is added to the process water before or during the pre-acidification step, and the pH of the process water is set to 8.0 or lower at least during the at least one pre-acidification step and during the at least one anaerobic cleaning step.
C02F 1/24 - Treatment of water, waste water, or sewage by flotation
C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
C02F 3/34 - Biological treatment of water, waste water, or sewage characterised by the microorganisms used
C02F 103/28 - Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
8.
METHOD AND APPARATUS FOR DRYING A PREFERABLY TRAVELING MATERIAL WEB BY MEANS OF AT LEAST ONE DRYING DEVICE HEATED BY MEANS OF BIOGAS AND COMPRISING INFRARED RADIATORS
The present invention relates to a method for producing an object, the method comprising the drying of the object or of a precursor thereof, wherein: the object or a precursor thereof is dried at least in part in at least one drying device, wherein at least one of the at least one drying units contains at least one infrared radiator heated at least in part by means of biogas; a combustion gas selected from the group consisting of oxygen, air or other oxygen-containing gases is added to the biogas before supplying said biogas to the at least one infrared radiator for heating same; and waste gas, created by the heating of the at least one infrared radiator by means of the biogas, is measured by a measuring device for oxygen content and, based on the measured oxygen content, the quantity of combustion gas added to the biogas is controlled before the biogas is supplied to the at least one infrared radiator.
D21F 5/00 - Dryer section of machines for making continuous webs of paper
9.
METHOD AND APPARATUS FOR DRYING PREFERABLY A MOVING MATERIAL WEB BY MEANS OF AT LEAST ONE DRYING DEVICE HEATED BY MEANS OF BIOGAS AND COMPRISING INFRARED RADIATORS
The present invention relates to a method for producing an object, the method comprising the drying of the object or of a precursor thereof, wherein: the object or a precursor thereof is dried at least in part in at least one drying device, wherein at least one of the at least one drying units contains at least one infrared radiator heated at least in part by means of biogas; a combustion gas selected from the group consisting of oxygen, air or other oxygen-containing gases is added to the biogas before supplying said biogas to the at least one infrared radiator for heating same; and waste gas, created by the heating of the at least one infrared radiator by means of the biogas, is measured by a measuring device for oxygen content and, based on the measured oxygen content, the quantity of combustion gas added to the biogas is controlled before the biogas is supplied to the at least one infrared radiator.
An apparatus for processing a rope formed in a pulper, comprising a conveying mechanism, in particular a winch, for pulling the rope, with the forward end first, out of the pulper, is characterized in that the conveying mechanism is positioned and designed in such a way that the rope can be fed, with the forward end first, directly to a shredder by the conveying mechanism.
B02C 18/00 - Disintegrating by knives or other cutting or tearing members which chop material into fragmentsMincing machines or similar apparatus using worms or the like
11.
Conveyor system for conveying material to be conveyed
The invention relates to a conveyor system for conveying at least one material to be conveyed, comprising a continuously circulating conveyor, at least one transponder, preferably an RFID transponder, arranged on or in the conveyor, and at least one communication device for wirelessly transmitting data to the transponder and/or for wirelessly reading data saved in the transponder, said conveyor being a pocket conveyor belt. The conveyor preferably comprises a plurality of transponders arranged at regular intervals, wherein the data transmitted to the individual transponders or the data saved in the individual transponders preferably relates to information about a defined section of the conveyor, such as information relating to the type and/or amount of the material to be conveyed in a section of the conveyor assigned to the respective transponder.
B65G 15/08 - Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration the load-carrying surface being formed by a concave or tubular belt, e.g. a belt forming a trough
B65G 15/36 - Belts or like endless load-carriers made of rubber or plastics with reinforcing layers, e.g. of fabric the layers incorporating ropes, chains, or rolled steel sections
B65G 15/42 - Belts or like endless load-carriers made of rubber or plastics having ribs, ridges, or other surface projections
B65G 43/00 - Control devices, e.g. for safety, warning or fault-correcting
B65G 15/40 - Belts or like endless load-carriers made of rubber or plastics troughed or tubularBelts or like endless load-carriers made of rubber or plastics formed with joints facilitating troughing
12.
Device and method for processing composite materials containing fibers
The invention relates to a device for processing composite materials containing fibers, in particular packaging materials containing fibers and in particular used beverage packagings. Said device comprises a double container, which comprises: an inner drum-like container having a hollow cylindrical drum body, which is closed by means of an end bottom at one of two end faces of the drum body and is open at an opposite end face of the drum body, wherein the drum body has screen holes at least on a section of the circumferential surface of the drum body, and wherein at least one baffle is provided at least on a section of the circumferential surface of the drum body and/or on the end bottom, and an outer container, which at least partially surrounds the drum body of the inner, drum-like container, such that an intermediate space is formed between the outer surface of the inner, drum-like container and the inner surface of the outer container, wherein the double container can be pivoted in the vertical plane.
The invention relates to a conveyor system for conveying at least one material to be conveyed, comprising a continuously circulating conveyor, at least one transponder, preferably an RFID transponder, arranged on or in the conveyor, and at least one communication device for wirelessly transmitting data to the transponder and/or for wirelessly reading data saved in the transponder, said conveyor being a pocket conveyor belt. The conveyor preferably comprises a plurality of transponders arranged at regular intervals, wherein the data transmitted to the individual transponders or the data saved in the individual transponders preferably relates to information about a defined section of the conveyor, such as information relating to the type and/or amount of the material to be conveyed in a section of the conveyor assigned to the respective transponder.
B65G 43/00 - Control devices, e.g. for safety, warning or fault-correcting
B65G 15/08 - Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration the load-carrying surface being formed by a concave or tubular belt, e.g. a belt forming a trough
14.
DEVICE AND METHOD FOR PROCESSING COMPOSITE MATERIALS CONTAINING FIBERS
The invention relates to a device for processing composite materials containing fibers, in particular packaging materials containing fibers and in particular used beverage packagings. Said device comprises a double container, which comprises: an inner drum-like container having a hollow cylindrical drum body, which is closed by means of an end bottom at one of two end faces of the drum body and is open at an opposite end face of the drum body, wherein the drum body has screen holes at least on a section of the circumferential surface of the drum body, and wherein at least one baffle is provided at least on a section of the circumferential surface of the drum body and/or on the end bottom, and an outer container, which at least partially surrounds the drum body of the inner, drum-like container, such that an intermediate space is formed between the outer surface of the inner, drum-like container and the inner surface of the outer container, wherein the double container can be pivoted in the vertical plane.
The invention relates to a method and a system for purifying process water, particularly for continuously purifying process water in the paper industry. The method comprises at least one process water treatment step, which comprises the following steps: a) an anaerobic purifying step, wherein process water to be purified is brought in contact with anaerobic microorganisms in an anaerobic reactor in order to decompose impurities present in the waste water, b) a first separating step, wherein gases present in the process water obtained in step a) are separated from said process water, and c) a second separating step, wherein solids present in the process water obtained in step b) are separated from the process water.
C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
C02F 5/00 - Softening waterPreventing scaleAdding scale preventatives or scale removers to water, e.g. adding sequestering agents
C02F 9/00 - Multistage treatment of water, waste water or sewage
C02F 103/28 - Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
D21C 5/00 - Other processes for obtaining cellulose, e.g. cooking cotton linters
D21C 11/06 - Treatment of pulp gasesRecovery of the heat content of the gases
16.
SYSTEM AND METHOD FOR TREATING PROCESS WATER WITH SEPARATE SEPARATION OF GASES AND SOLIDS
The invention relates to a method and a system for purifying process water, particularly for continuously purifying process water in the paper industry. The method comprises at least one process water treatment step, which comprises the following steps: a) an anaerobic purifying step, wherein process water to be purified is brought in contact with anaerobic microorganisms in an anaerobic reactor in order to decompose impurities present in the waste water, b) a first separating step, wherein gases present in the process water obtained in step a) are separated from said process water, and c) a second separating step, wherein solids present in the process water obtained in step b) are separated from the process water.
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