WO2016051572A1 - 再生ロータリーキルン - Google Patents
再生ロータリーキルン Download PDFInfo
- Publication number
- WO2016051572A1 WO2016051572A1 PCT/JP2014/076430 JP2014076430W WO2016051572A1 WO 2016051572 A1 WO2016051572 A1 WO 2016051572A1 JP 2014076430 W JP2014076430 W JP 2014076430W WO 2016051572 A1 WO2016051572 A1 WO 2016051572A1
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- WO
- WIPO (PCT)
- Prior art keywords
- combustion chamber
- gas
- rotary kiln
- carbon fiber
- superheated steam
- Prior art date
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/12—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of plastics, e.g. rubber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
- F23G5/0273—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using indirect heating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/14—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with steam or water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- the present invention relates to a regenerative rotary kiln for recovering carbon fibers from carbon fiber reinforced resin.
- Carbon fiber reinforced resin Carbon Fiber Reinforced Plastic, hereinafter referred to as “CFRP” as appropriate
- CFRP Carbon Fiber Reinforced Plastic
- CFRP Carbon Fiber Reinforced Plastic
- Patent Document 1 discloses a method of gasifying a matrix resin of waste (CFRP) and recovering carbon fibers from the waste. According to the method described in this document, the volume of waste can be reduced. Further, according to the method described in the document, the heating cost of the CFRP can be reduced by heating the processing tube with the heat of burning the gas.
- CFRP matrix resin of waste
- the regenerative rotary kiln of the present invention includes a superheated steam generating unit that generates superheated steam, a rotation around an axis, and a matrix resin and carbon fiber while supplying the superheated steam.
- carbon fibers can be continuously recovered. Further, the CFRP can be agitated as the tube rotates. For this reason, the collect
- the CFRP In the heating section, the CFRP is heated while being exposed to superheated steam.
- the matrix resin in CFRP is hydrolyzed and pyrolyzed by the moisture and heat of superheated steam and the heat of the first combustion chamber.
- the gas is flammable.
- the combustible gas is introduced from the heating section into the first combustion chamber and burns in the first combustion chamber.
- the heating section of the tube can be heated by the combustion heat of the gas.
- the combustible gas generated from the matrix resin can be used for heating the CFRP. For this reason, the heating cost of CFRP can be reduced.
- combustible gas that has not been burned in the first combustion chamber (specifically, the unburned portion of the gas) is introduced from the first combustion chamber to the second combustion chamber and burned in the second combustion chamber.
- the combustion heat of the gas is used to generate superheated steam. That is, the combustion heat of the gas is used for at least a part of the superheated steam generation process of “water ⁇ boiling water ⁇ wet steam ⁇ saturated steam ⁇ superheated steam”.
- the gas introduced from the first combustion chamber to the second combustion chamber can be used for the generation of superheated steam. For this reason, the production cost of superheated steam can be reduced.
- the unburned part of combustible gas can be reduced.
- regeneration rotary kiln can be reduced. For this reason, the environmental pollution by combustible gas can be suppressed.
- first combustion chamber and the second combustion chamber communicate with each other, they are independent of each other. For this reason, the first combustion chamber and the second combustion chamber can be controlled independently of each other. For example, the room temperature can be individually controlled in the first combustion chamber and the second combustion chamber.
- the superheated steam generation unit includes a waste heat recovery boiler that generates water vapor by heating water, and the waste heat recovery boiler and the pipe via the second combustion chamber.
- a supply pipe that connects the body and generates the superheated steam by heating the steam, and the steam inside the supply pipe is transmitted through the pipe wall of the supply pipe It is better to have a configuration that is heated by the heat of the second combustion chamber.
- steam can be generated from water in the waste heat recovery boiler.
- superheated steam can be generated from the steam using the heat of the second combustion chamber.
- the waste heat recovery boiler is configured to heat the water and generate the water vapor by burning the gas introduced from the second combustion chamber. Good.
- steam in the waste heat recovery boiler, steam can be generated from water using the combustion heat of the combustible gas that has not been burned in the second combustion chamber (specifically, the unburned portion of the gas). it can.
- the waste heat recovery boiler is preferably configured to heat the water and generate the water vapor by the heat of the gas introduced from the second combustion chamber.
- the second combustion chamber is preferably juxtaposed with the first combustion chamber.
- the first combustion chamber and the second combustion chamber are arranged next to each other. For this reason, when gas is introduced from the first combustion chamber to the second combustion chamber, the temperature of the gas is unlikely to decrease. Further, the first combustion chamber can be heated by the combustion heat of the gas in the second combustion chamber. That is, the heating section can be heated by the combustion heat of the gas in the second combustion chamber through the first combustion chamber. Moreover, the installation space of the regeneration rotary kiln can be reduced.
- a gas supply unit that supplies nitrogen gas to the inside of the tubular body.
- This configuration can suppress the intrusion of air (oxygen) into the tube. That is, the oxidation of the carbon fiber in the pipe can be suppressed. Moreover, the adhesiveness (adhesiveness) of the collect
- recovered carbon fiber and matrix resin can be improved by adding nitrogen gas in superheated steam.
- the carbon fibers that have passed through the heating section are unlikely to be scattered inside the tubular body due to the airflow generated when nitrogen gas is supplied. Moreover, there is no possibility that the carbon fiber that has passed through the heating section is pushed back to the upstream side of the tubular body. For this reason, it is hard to produce dispersion
- CFRP can be reliably exposed to nitrogen gas from the beginning of CFRP treatment in the heating section. For this reason, the adhesiveness (adhesiveness) of the collect
- recovered carbon fiber and matrix resin can be improved reliably.
- a recovery unit that recovers the carbon fiber extracted from the tubular body is provided on the downstream side of the tubular body, and the superheated steam generation The part is preferably configured to heat the recovery part.
- the recovery unit has a classification unit that classifies the carbon fibers.
- the recovered carbon fiber having a short fiber length is reused in, for example, a resin injection molded product.
- those having a long fiber length are reused, for example, as a nonwoven fabric.
- the reuse destination of the carbon fiber after collection may be determined according to the length of the fiber length. For this reason, if the recovered carbon fibers are classified for each fiber length, it is convenient for reuse.
- the collection unit of this configuration includes a classification unit. According to this configuration, the carbon fibers recovered from the tube can be classified for each fiber length.
- the CFRP can be cut into a size suitable for loading into the tube body. Further, the size of CFRP can be adjusted by cutting. For example, by making the size of CFRP constant, the processing in the tube can be homogenized. For this reason, the quality of the collected carbon fiber can be stabilized.
- FIG. 1 is a longitudinal sectional view of a regenerative rotary kiln according to a first embodiment.
- FIG. 2 is a longitudinal sectional view of the regenerative rotary kiln of the second embodiment.
- FIG. 1 the longitudinal direction (front-back direction) sectional drawing of the reproduction
- the regenerative rotary kiln 1 includes a superheated steam generation unit 2, a tube 3, a combustion unit 4, a gas supply unit 5, a recovery unit 6, a supply unit 7, and two pairs of front and rear rollers. 90.
- the combustion unit 4 includes an outer wall 40, a heat insulating material 41, a partition wall 42, a first combustion chamber 43a, a second combustion chamber 43b, a plurality of first burners 44a, a plurality of second burners 44b, and a plurality of A first air supply pipe 45a, a plurality of second air supply pipes 45b, and a connecting cylinder 46 are provided.
- the outer wall 40 has a rectangular box shape.
- the heat insulating material 41 is laminated inside the outer wall 40.
- the partition wall partitions the internal space of the heat insulating material 41 into two upper and lower chambers. That is, the partition wall 42 partitions the internal space of the heat insulating material 41 into an upper first combustion chamber 43a and a lower second combustion chamber 43b.
- a plurality of second passages 420 are formed in the partition wall 42.
- the second passage 420 connects the first combustion chamber 43a and the second combustion chamber 43b in the vertical direction.
- the plurality of first burners 44a and the plurality of first air supply pipes 45a are disposed in the first combustion chamber 43a. Fuel gas (for example, propane gas) and air are supplied to the first burner 44a.
- Air is supplied to the first air supply pipe 45a.
- the plurality of second burners 44b and the plurality of second air supply pipes 45b are disposed in the second combustion chamber 43b.
- Fuel gas for example, propane gas
- Air is supplied to the second air supply pipe 45b.
- the connection cylinder 46 connects the combustion unit 4 and a waste heat recovery boiler 20 described later.
- a third passage 460 is disposed inside the connection tube 46. The third passage 460 communicates with the second combustion chamber 43b.
- the tube body 3 includes a core tube 30, a pair of front and rear tires 31, and a plurality of connection tubes 32.
- the core tube 30 has a cylindrical shape.
- the core tube 30 is disposed substantially horizontally.
- the core tube 30 is inclined in a direction that descends from the front side (upstream side in the conveyance direction of CFRP 10 described later) to the rear side (downstream side in the conveyance direction of CFRP 10 described later).
- the core tube 30 penetrates the upper part of the combustion unit 4, specifically, the first combustion chamber 43 a in the front-rear direction (axial direction).
- a heating section A is set inside (radially inside) the core tube 30 (the portion exposed to the first combustion chamber 43a).
- the plurality of connecting pipes 32 each have an L shape.
- the connection pipe 32 penetrates the side peripheral wall of the core tube 30.
- One end of the connection pipe 32 (upstream end in the flow direction of the gas 10G described later) is disposed at the center of the core tube 30 in the radial direction.
- One end of the connection pipe 32 opens rearward.
- the other end of the connection pipe 32 (a downstream end in the flow direction of the gas 10G described later) is disposed on the radially outer side of the core tube 30.
- the other end of the connecting pipe 32 opens to the first combustion chamber 43a.
- a first passage 320 is disposed inside the connection pipe 32.
- the first passage 320 connects the heating section A and the first combustion chamber 43a.
- the pair of front and rear tires 31 are mounted around the front end portion and the rear end portion of the core tube 30 with the heating section A interposed therebetween.
- the front tire 31 is mounted on a pair of left and right rollers 90 on the front side so as to be able to roll.
- the rear tire 31 is mounted on a pair of left and right rollers 90 on the rear side so as to be able to roll.
- the supply unit 7 includes a screw feeder 70, a hopper 71, a cutting machine 72, and an upstream end cover 73.
- the cutting machine 72 is included in the concept of the “cutting unit” of the present invention.
- the upstream end cover 73 covers the front end portion of the core tube 30 while ensuring the rotation of the core tube 30.
- the screw feeder 70 extends in the front-rear direction.
- the rear end of the screw feeder 70 (the downstream end in the conveyance direction of the CFRP 10 described later) is inserted into the tube body 3.
- the hopper 71 is connected to the front end portion of the screw feeder 70 from above.
- the cutting machine 72 is connected to the front side of the hopper 71 (upstream side in the conveyance direction of CFRP 10 described later).
- the gas supply unit 5 includes a gas supply pipe 50.
- the gas supply pipe 50 passes through the upstream end cover 73.
- the recovery unit 6 includes a tank 60, a downstream end cover 61, a pipe 62, a cyclone filter 63, a pipe 64, a long fiber tank 65, a bag filter 66, a short fiber tank 67, and a blower 68. I have.
- the cyclone filter 63 is included in the concept of “classification unit” of the present invention.
- the downstream end cover 61 covers the rear end portion of the core tube 30 while ensuring the rotation of the core tube 30.
- the tank 60 is arranged continuously to the lower side of the downstream end cover 61.
- the cyclone filter 63 is connected to the downstream side of the tank 60 (downstream side in the conveyance direction of the carbon fiber 10S described later) via the pipe 62.
- the long fiber tank 65 is connected to the lower end opening of the cyclone filter 63 (the carry-out side of carbon fiber (long fiber) 10Sa described later).
- the bag filter 66 is connected to the upper end opening of the cyclone filter 63 (on the carry-out side of carbon fiber (short fiber) 10Sb described later) via a pipe 64.
- the bag filter 66 includes a filter cloth 66a.
- the short fiber tank 67 is connected to the lower end opening of the bag filter 66 (upstream side of the filter cloth 66a.
- the carbon fiber (short fiber) 10Sb described later is carried out).
- the blower 68 is connected to the upper end opening of the bag filter 66 (on the downstream side of the filter cloth 66a).
- the long fiber tank 65 and the short fiber tank 67 are each provided with an opening (not shown) with a lid. The operator pulls out the carbon fiber 10Sa from the long fiber tank 65 and the carbon fiber 10Sb from the short fiber tank 67 through the opening.
- the superheated steam generation unit 2 includes a waste heat recovery boiler 20, a recovery unit heating unit 21, and a supply pipe 22.
- the waste heat recovery boiler 20 is disposed on the rear side of the combustion unit 4 (downstream side in the flow direction of the gas 10G described later).
- the waste heat recovery boiler 20 includes a housing 200, a pipe 201, and an exhaust pipe 202.
- a heating chamber 200 a is disposed inside the housing 200.
- a plurality of boiler burners 200b and a plurality of boiler air supply pipes 200c are arranged in the heating chamber 200a.
- Fuel gas for example, propane gas
- the pipe 201 is disposed in the heating chamber 200a.
- the pipe 201 meanders the heating chamber 200a.
- the exhaust tube 202 protrudes from the housing 200.
- a fourth passage 202 a is disposed inside the exhaust cylinder 202.
- the fourth passage 202 a connects the heating chamber 200 a and the outside of the housing 200.
- a dust collector specifically a cyclone filter, not shown
- a suction blower (not shown) are arranged in the exhaust cylinder 202.
- the recovery unit heating unit 21 includes a pipe 210 and a jacket 211.
- One end of the pipe 210 (upstream end in the steam flow direction described later) is connected to the pipe 201 of the waste heat recovery boiler 20.
- the jacket 211 covers the tank 60 of the collection unit 6 from the lower side and the outer side.
- the jacket 211 is connected to the other end of the pipe 210 (a downstream end in the flow direction of water vapor described later).
- One end of the supply pipe 22 (upstream end in the flow direction of superheated steam described later) is connected to the pipe 201 of the waste heat recovery boiler 20.
- the supply pipe 22 passes through the second combustion chamber 43b.
- the supply pipe 22 meanders through the second combustion chamber 43b.
- the other end of the supply pipe 22 (a downstream end in the flow direction of superheated steam described later) passes through the upstream end cover 73.
- the regeneration rotary kiln 1 can separate the CFRP 10 into a combustible gas 10G made of a matrix resin and a carbon fiber 10S. Among these, the carbon fiber 10S is collected.
- the gas 10G is used to heat the CFRP 10 in the regeneration rotary kiln 1.
- the gas 10G is used in the regeneration rotary kiln 1 to generate superheated steam.
- the waste heat recovery boiler 20 is driven. Specifically, water is supplied to the pipe 201. In addition, fuel gas and air are supplied to the boiler burner 200b and ignited. That is, steam is generated by heating the water inside the pipe 201. The water vapor is introduced into the jacket 211 of the recovery unit heating unit 21. Further, the water vapor is introduced into the supply pipe 22. The water vapor introduced into the supply pipe 22 is heated when passing through the second combustion chamber 43b (the second burner 44b has been ignited). At this time, superheated steam is generated. The generated superheated steam is introduced into the core tube 30 from the front end opening (upstream end opening in the conveying direction of the CFRP 10) of the core tube 30.
- CFRP 10 is supplied to the regeneration rotary kiln 1. Specifically, the CFRP 10 is supplied to the screw feeder 70 via the cutting machine 72 and the hopper 71.
- the CFRP 10 includes a matrix resin and carbon fibers.
- the CFRP 10 is cut into a predetermined size by the cutting machine 72.
- the CFRP 10 is introduced into the core tube 30 by the screw feeder 70.
- the loaded CFRP 10 moves from the front side to the rear side due to the inclination of the core tube 30 while swinging by the rotation of the core tube 30.
- the CFRP 10 (specifically, a cut piece of the CFRP 10) passes through the heating section A.
- the heating section A is accommodated in the first combustion chamber 43a.
- the heating section A is maintained at a predetermined temperature by the first combustion chamber 43a.
- superheated steam is introduced into the heating section A from the front side (upstream side in the conveyance direction of the CFRP 10) via the supply pipe 22.
- nitrogen gas is introduced into the heating section A from the front side (upstream side in the conveyance direction of the CFRP 10) via the gas supply pipe 50.
- the CFRP 10 is heated while being exposed to superheated steam and nitrogen gas.
- the matrix resin in the CFRP 10 is hydrolyzed and pyrolyzed by the moisture and heat of superheated steam and the heat of the first combustion chamber 43a.
- the matrix resin Due to the decomposition, the matrix resin is reduced in molecular weight and gasified. That is, in the heating section A, the CFRP 10 is separated into the gas 10G and the carbon fiber 10S. Among these, the gas 10G is introduced into the first combustion chamber 43a from the heating section A through the plurality of first passages 320. On the other hand, the carbon fiber 10S remains in the heating section A.
- the remaining carbon fiber 10S flows down to the tank 60 from the rear end opening (downstream end opening in the conveying direction of the CFRP 10) of the core tube 30.
- the carbon fibers 10S that have flowed down to the tank 60 are mixed with carbon fibers 10Sa that are long fibers and carbon fibers 10Sb that are short fibers (fiber length is shorter than the carbon fibers 10Sa).
- the carbon fiber 10 ⁇ / b> S is conveyed from the tank 60 to the cyclone filter 63 via the pipe 62 by the blower 68. In the cyclone filter 63, the carbon fibers 10S are classified into carbon fibers 10Sa and carbon fibers 10Sb by centrifugal force and gravity.
- the carbon fiber 10Sa that is a long fiber has a large mass. For this reason, it falls into the long fiber tank 65 from the lower end opening of the cyclone filter 63.
- the carbon fiber 10Sb which is a short fiber, has a smaller mass than the carbon fiber 10Sa. For this reason, the blower 68 is conveyed to the bag filter 66 from the upper end opening of the cyclone filter 63 via the pipe 64. The carbon fiber 10Sb is filtered by the filter cloth 66a and falls into the short fiber tank 67.
- the gas 10G generated from the matrix resin is flammable.
- the gas 10G burns in the first combustion chamber 43a. That is, the gas 10G is used as a heat source for heating the CFRP 10, specifically as a heat source for hydrolyzing and thermally decomposing the matrix resin.
- the temperature of the first combustion chamber 43a is ensured by the amount of heat generated by the combustion of the fuel gas in the first burner 44a and the amount of heat generated by the combustion of the gas 10G.
- the flow rate of the fuel gas combustion amount of the first burner 44a
- the flow rate of the fuel gas can be reduced accordingly. For example, at least one of the first burners 44a can be extinguished.
- the temperature of the first combustion chamber 43a can be adjusted by the combustion amount of the first burner 44a and the air supply amount of the first air supply pipe 45a. For example, when the combustion amount of the first burner 44a is increased, the temperature of the first combustion chamber 43a can be raised. On the contrary, if the combustion amount of the first burner 44a is reduced, the temperature of the first combustion chamber 43a can be lowered.
- the temperature of the first combustion chamber 43a can be increased by increasing the amount of air supplied to the first air supply pipe 45a. Can be lowered. On the contrary, if the air supply amount of the first air supply pipe 45a is reduced, the temperature of the first combustion chamber 43a can be raised.
- the temperature of the first combustion chamber 43a is increased by increasing the air supply amount of the first air supply pipe 45a. Can be raised. On the contrary, if the air supply amount of the first air supply pipe 45a is reduced, the temperature of the first combustion chamber 43a can be lowered.
- the gas 10G is introduced from the first combustion chamber 43a to the second combustion chamber 43b via the plurality of second passages 420.
- the gas 10G (specifically, the unburned portion of the gas 10G in the first combustion chamber 43a) burns in the second combustion chamber 43b. That is, the gas 10G is used as a heat source for heating the supply pipe 22, specifically as a heat source for generating superheated steam from steam.
- the temperature of the second combustion chamber 43b is secured by the amount of heat generated by the combustion of the fuel gas in the second burner 44b and the amount of heat generated by the combustion of the gas 10G.
- the flow rate of the fuel gas combustion amount of the second burner 44b
- the temperature of the second combustion chamber 43b can be adjusted by the combustion amount of the second burner 44b and the air supply amount of the second air supply pipe 45b.
- the gas 10G is introduced from the second combustion chamber 43b into the heating chamber 200a through the third passage 460.
- the gas 10G (specifically, the unburned portion of the gas 10G in the second combustion chamber 43b) burns in the heating chamber 200a. That is, the gas 10G is used as a heat source for heating the pipe 201, specifically, a heat source for generating water vapor from water.
- the temperature of the heating chamber 200a is secured by the amount of heat generated by the combustion of the fuel gas in the boiler burner 200b and the amount of heat generated by the combustion of the gas 10G.
- the flow rate of the fuel gas (the combustion amount of the boiler burner 200b) can be reduced accordingly.
- at least one boiler burner 200b among the plurality of boiler burners 200b can be extinguished.
- the temperature of the heating chamber 200a can be adjusted by the combustion amount of the boiler burner 200b and the air supply amount of the boiler air supply pipe 200c.
- Waste gas is discharged from the heating chamber 200a to the outside of the regeneration rotary kiln 1 through the fourth passage 202a.
- the waste gas includes carbon dioxide generated by the combustion of the gas 10G in the first combustion chamber 43a, the second combustion chamber 43b, and the heating chamber 200a.
- the function and effect of the regenerative rotary kiln of the present embodiment will be described.
- the carbon fibers 10S can be continuously recovered. Further, the CFRP 10 can be agitated as the tube body 3 rotates. For this reason, the recovered carbon fiber 10S can be homogenized.
- the CFRP 10 is heated while being exposed to superheated steam.
- the matrix resin in the CFRP 10 is hydrolyzed and pyrolyzed by the moisture and heat of superheated steam and the heat of the first combustion chamber 43a.
- the gas 10G is flammable.
- the combustible gas 10G is introduced into the first combustion chamber 43a from the heating section A through the plurality of first passages 320, and combusts in the first combustion chamber 43a.
- the heating section A of the tubular body 3 can be heated by the combustion heat of the gas 10G.
- regeneration rotary kiln 1 of this embodiment the combustible gas 10G produced
- the combustible gas 10G that has not been burned in the first combustion chamber 43a (specifically, the unburned portion of the gas) is introduced from the first combustion chamber 43a to the second combustion chamber 43b, Burn.
- the combustion heat of the gas 10G is used to generate superheated steam. That is, the combustion heat of the gas 10G is used for at least a part of the superheated steam generation process of “water ⁇ boiling water ⁇ wet steam ⁇ saturated steam ⁇ superheated steam”.
- the gas 10G introduced from the first combustion chamber 43a to the second combustion chamber 43b can be used for generation of superheated steam. For this reason, the production cost of superheated steam can be reduced.
- the unburned part of combustible gas 10G can be reduced. Further, the ratio of the combustible gas 10G in the waste gas (specifically, the waste gas released from the heating chamber 200a to the outside of the regeneration rotary kiln 1 through the fourth passage 202a) can be reduced. For this reason, the environmental pollution by combustible gas can be suppressed.
- the supply pipe 22 is arranged in a wavy line. For this reason, the water vapor in the supply pipe 22 is easily heated by the heat of the second combustion chamber 43b through the side peripheral wall (tube wall).
- first combustion chamber 43a and the second combustion chamber 43b communicate with each other, they are independent of each other.
- first combustion chamber 43 a and the second combustion chamber 43 b are partitioned by a plurality of partition walls 42 with a second passage 420.
- the first combustion chamber 43a and the second combustion chamber 43b can be controlled independently of each other.
- the indoor temperature can be individually controlled in the first combustion chamber 43a and the second combustion chamber 43b.
- the gas 10G introduced from the second combustion chamber 43b through the third passage 460 (specifically, the gas 10G in the second combustion chamber 43b).
- Steam can be generated from water by using the combustion heat of the unburned portion.
- superheated steam can be generated from the steam using the heat of the second combustion chamber 43 b. For this reason, the production cost of superheated steam can be reduced. Further, the unburned portion of the gas 10G in the second combustion chamber 43b can be reduced.
- the first combustion chamber 43a and the second combustion chamber 43b are arranged adjacent to each other via the partition wall 42. For this reason, when the gas 10G is introduced from the first combustion chamber 43a to the second combustion chamber 43b, the temperature of the gas 10G is unlikely to decrease. Further, the first combustion chamber 43a can be heated by the combustion heat of the gas 10G in the second combustion chamber 43b. That is, the heating section A can be heated by the combustion heat of the gas 10G in the second combustion chamber 43b through the first combustion chamber 43a. Moreover, the installation space of the reproduction
- nitrogen gas is introduced from the gas supply pipe 50 into the core tube 30. For this reason, intrusion of air (oxygen) into the tube 3 can be suppressed. That is, the oxidation of the carbon fiber 10S in the tubular body 3 can be suppressed. Moreover, since nitrogen gas is added to superheated steam, the adhesiveness (adhesion) between the recovered carbon fibers 10S and the matrix resin can be improved.
- the CFRP 10 in the heating section A, the CFRP 10 can be reliably exposed to nitrogen gas from the beginning of the processing of the CFRP 10. For this reason, the adhesiveness (adhesion) between the recovered carbon fibers 10S and the matrix resin can be reliably improved.
- the gas supply pipe 50 introduces nitrogen gas into the core tube 30 from the front end opening of the core tube 30 (upstream end opening in the conveyance direction of the CFRP 10). .
- the carbon fiber 10S is scattered inside the core tube 30. Hateful.
- the carbon fiber 10S that has passed the heating section A is pushed back to the heating section A of the core tube 30 by the nitrogen gas flow. That is, the carbon fiber 10S that has passed through the heating section A is not heated again in the heating section A. For this reason, it is hard to produce dispersion
- the regeneration rotary kiln 1 of the present embodiment superheated steam and nitrogen gas are supplied from the same direction. For this reason, superheated steam and nitrogen gas do not interfere with the airflow. For this reason, the carbon fibers 10 ⁇ / b> S that have already passed through the heating section A are unlikely to be scattered inside the furnace core tube 30. Thereby, CFRP10 can be processed reliably. Therefore, the adhesiveness (adhesiveness) of the carbon fiber 10S can be reliably improved.
- the jacket 211 covers the tank 60 from the lower side and the outer side. For this reason, generation
- the cutting machine 72 is arranged on the front side of the hopper 71 (upstream side in the conveyance direction of the CFRP 10). For this reason, the CFRP 10 can be cut into a size suitable for loading into the tube body 3. Further, the size of the CFRP 10 can be adjusted by cutting. For example, by making the size of the CFRP 10 constant, the processing in the tube 3 can be homogenized. For this reason, the quality of the collected carbon fiber 10S can be stabilized.
- the collection unit 6 includes the cyclone filter 63.
- the carbon fibers 10S collected from the tubular body 3 can be classified into carbon fibers 10Sa that are long fibers and carbon fibers 10Sb that are short fibers. That is, the carbon fiber 10S can be classified for each fiber length. For this reason, it is not necessary to classify the carbon fiber 10S again at the time of reuse.
- ⁇ Second embodiment> The difference between the regenerative rotary kiln of the present embodiment and the regenerative rotary kiln of the first embodiment is that superheated steam is generated from water in the supply pipe. Moreover, the superheated steam production
- FIG. 2 is a longitudinal sectional view of the regenerative rotary kiln of the present embodiment.
- the combustion unit 4 includes a first part 4a, a second part 4b, a plurality of connection cylinders 4c, and an exhaust cylinder 4d.
- the first part 4a includes an outer wall 40a, a heat insulating material 41a, a first combustion chamber 43a, a plurality of first burners 44a, and a plurality of first air supply pipes 45a.
- the outer wall 40a has a rectangular box shape.
- the heat insulating material 41a is laminated inside the outer wall 40a.
- the first combustion chamber 43a is partitioned inside the heat insulating material 41a.
- the plurality of first burners 44a and the plurality of first air supply pipes 45a are disposed in the first combustion chamber 43a.
- the second part 4b is disposed below the first part 4a with a predetermined distance therebetween.
- the second part 4b includes an outer wall 40b, a heat insulating material 41b, a second combustion chamber 43b, and a plurality of parts. Second burner 44b and a plurality of second air supply pipes 45b.
- the outer wall 40b has a rectangular box shape. A rear side portion of the upper wall of the outer wall 40 b is in contact with the tank 60.
- the heat insulating material 41b is laminated inside the outer wall 40b (specifically, a portion other than the rear side portion of the upper wall).
- the second combustion chamber 43b is partitioned inside the heat insulating material 41b.
- the plurality of second burners 44b and the plurality of second air supply pipes 45b are disposed in the second combustion chamber 43b.
- the plurality of connecting cylinders 4c are respectively interposed between the first part 4a and the second part 4b.
- a second passage 40c is disposed inside the connecting cylinder 4c.
- the second passage 40c connects the first combustion chamber 43a and the second combustion chamber 43b in the vertical direction.
- the exhaust cylinder 4d protrudes from the second part 4b.
- a third passage 40d is disposed inside the exhaust cylinder 4d.
- the third passage 40d connects the second combustion chamber 43b and the outside of the outer wall 40b.
- a dust collector specifically a cyclone filter, not shown
- a suction blower (not shown) are arranged in the exhaust cylinder 4d.
- the superheated steam generation unit 2 includes a supply pipe 22. Water is introduced from one end of the supply pipe 22 (upstream end in the flow direction of superheated steam).
- the supply pipe 22 passes through the second combustion chamber 43b.
- the supply pipe 22 meanders through the second combustion chamber 43b.
- the other end of the supply pipe 22 (the downstream end in the flow direction of the superheated steam) passes through the downstream end cover 61.
- the supply pipe 22 is inserted into the core tube 30 from the rear end (downstream end in the conveyance direction of the CFRP 10) opening of the core tube 30.
- the gas supply unit 5 includes a gas supply pipe 50.
- the gas supply pipe 50 passes through the downstream end cover 61.
- the gas supply pipe 50 is inserted into the core tube 30 from the rear end (downstream end in the conveyance direction of the CFRP 10) opening of the core tube 30.
- An opening (not shown) with a lid is disposed in the tank 60 of the collection unit 6. The operator pulls out the carbon fiber 10S from the tank 60 through the opening.
- the regenerative rotary kiln according to the present embodiment and the regenerative rotary kiln according to the first embodiment have the same functions and effects with respect to parts having the same configuration.
- superheated steam and nitrogen gas may be introduced into the core tube 30 from the rear end (downstream end in the conveyance direction of the CFRP 10) opening of the core tube 30.
- the tank 60 can be heated by the heat of the second combustion chamber 43b. For this reason, generation
- nitrogen gas is supplied into the reactor core tube 30, but inert gas (argon, helium, etc.) may be supplied. Further, carbon dioxide may be supplied into the core tube 30. Also in this case, the adhesion (adhesion) between the carbon fiber and the matrix resin can be improved as in the case of supplying nitrogen gas.
- the waste gas discharged from the exhaust pipe 202 shown in FIG. 1 and the exhaust pipe 4d shown in FIG. 2 contains carbon dioxide. The carbon dioxide may be supplied into the core tube 30. If it carries out like this, the cost required for supply of nitrogen gas can be reduced. Moreover, it is not necessary to arrange the gas supply unit 5.
- the superheated steam or nitrogen gas is not supplied from either one of the front end (upstream side in the conveyance direction of the CFRP 10) or the rear end (downstream side in the conveyance direction of the CFRP 10) of the core tube 30, but from both directions.
- You may supply.
- a plurality of introduction holes may be provided in a portion extending inside the core tube 30, and superheated steam may be introduced into the core tube 30.
- the gas supply pipe 50 a plurality of introduction holes may be provided in a portion extending into the core tube 30, and nitrogen gas may be introduced into the core tube 30.
- the supply pipe 22 and the gas supply pipe 50 may be disposed inside the core tube 30 so as to face each other in the front-rear direction (axial direction).
- the first combustion chamber 43a is disposed on the second combustion chamber 43b, but the first combustion chamber 43a may be disposed below the second combustion chamber 43b. Good. Moreover, you may arrange
- first combustion chamber 43a may be covered from the outside by the second combustion chamber 43b. If it carries out like this, it will become easy to heat the 1st combustion chamber 43a with the heat of the 2nd combustion chamber 43b. Moreover, the heat retention of the first combustion chamber 43a is improved.
- the regenerative rotary kiln 1 and the waste heat recovery boiler 20 may be arranged at different locations. That is, steam generated by a boiler of another facility may be introduced into the supply pipe 22 to generate superheated steam.
- city gas liquefied petroleum gas, COG (coke oven gas), or the like may be used as fuel gas for the first burner 44a, the second burner 44b, and the boiler burner 200b.
- COG coke oven gas
- the boiler burner 200b and the boiler air supply pipe 200c in the heating chamber 200a of the waste heat recovery boiler 20 shown in FIG.
- the water inside the pipe 201 is heated by the heat of the gas 10G introduced from the second combustion chamber 43b to the heating chamber 200a via the third passage 460. If it carries out like this, the cost required for installation of the boiler burner 200b and the boiler air supply pipe 200c can be reduced. Further, the structure of the waste heat recovery boiler 20 can be simplified.
- a plurality of cyclone filters 63 shown in FIG. 1 may be arranged.
- another cyclone filter 63 may be connected to the pipe 64.
- the blower 68 may be connected to the most downstream cyclone filter 63. If it carries out like this, carbon fiber 10S can be classified to more groups for every fiber length.
- position classifiers other than the cyclone filter 63 as a classification part. For example, a vibration sieving machine that performs classification using a net may be disposed as the classification unit.
- the occurrence of condensation can be suppressed.
- the number of the second passages 420, the third passages 460 shown in FIG. 1 and the second passages 40c shown in FIG. 2 is not particularly limited.
- the number of the second passages 420 and 40c may be one.
- the number of the third passages 460 may be plural.
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Abstract
Description
[再生ロータリーキルンの構成]
まず、本実施形態の再生ロータリーキルンの構成について説明する。図1に、本実施形態の再生ロータリーキルンの長手方向(前後方向)断面図を示す。図1に示すように、再生ロータリーキルン1は、過熱水蒸気生成部2と、管体3と、燃焼部4と、ガス供給部5と、回収部6と、供給部7と、前後二対のローラ90と、を備えている。
燃焼部4は、外壁40と、断熱材41と、隔壁42と、第一燃焼室43aと、第二燃焼室43bと、複数の第一バーナ44aと、複数の第二バーナ44bと、複数の第一空気供給管45aと、複数の第二空気供給管45bと、接続筒46と、を備えている。
管体3は、炉心管30と、前後一対のタイヤ31と、複数の接続管32と、を備えている。炉心管30は、円筒状を呈している。炉心管30は、略水平に配置されている。炉心管30は、前側(後述するCFRP10の搬送方向における上流側)から後側(後述するCFRP10の搬送方向における下流側)に向かって下がる方向に、傾斜している。炉心管30は、燃焼部4の上側部分、具体的には第一燃焼室43aを、前後方向(軸方向)に貫通している。炉心管30(第一燃焼室43aに露出する部分)の内部(径方向内側)には、加熱区間Aが設定されている。
供給部7は、スクリューフィーダ70と、ホッパ71と、切断機72と、上流端カバー73と、を備えている。切断機72は、本発明の「切断部」の概念に含まれる。上流端カバー73は、炉心管30の前端部を、炉心管30の回転を確保しながら、覆っている。スクリューフィーダ70は、前後方向に延在している。スクリューフィーダ70の後端(後述するCFRP10の搬送方向における下流端)は、管体3の内部に挿入されている。ホッパ71は、スクリューフィーダ70の前端部に、上側から接続されている。切断機72は、ホッパ71の前側(後述するCFRP10の搬送方向における上流側)に連なっている。
ガス供給部5は、ガス供給管50を備えている。ガス供給管50は、上流端カバー73を貫通している。回収部6は、タンク60と、下流端カバー61と、配管62と、サイクロンフィルタ63と、配管64と、長繊維タンク65と、バグフィルタ66と、短繊維タンク67と、ブロワ68と、を備えている。サイクロンフィルタ63は、本発明の「分級部」の概念に含まれる。
過熱水蒸気生成部2は、廃熱回収ボイラ20と、回収部加熱部21と、供給管22と、を備えている。廃熱回収ボイラ20は、燃焼部4の後側(後述するガス10Gの流動方向における下流側)に配置されている。廃熱回収ボイラ20は、ハウジング200と、配管201と、排気筒202と、を備えている。ハウジング200の内部には、加熱室200aが配置されている。加熱室200aには、複数のボイラ用バーナ200bと、複数のボイラ用空気供給管200cと、が配置されている。ボイラ用バーナ200bには、燃料ガス(例えばプロパンガス)と空気とが供給される。配管201は、加熱室200aに配置されている。配管201は、加熱室200aを蛇行している。排気筒202は、ハウジング200から突設されている。排気筒202の内部には、第四通路202aが配置されている。第四通路202aは、加熱室200aとハウジング200の外部とを連結している。排気筒202には、集塵機(具体的にはサイクロンフィルタ、図略)、吸引ブロワ(図略)が配置されている。
次に、本実施形態の再生ロータリーキルンの炭素繊維回収時の動きについて説明する。再生ロータリーキルン1は、CFRP10を、マトリックス樹脂からなる可燃性のガス10Gと、炭素繊維10Sと、に分離することができる。このうち、炭素繊維10Sは、回収される。また、ガス10Gは、再生ロータリーキルン1において、CFRP10を加熱するために使用される。並びに、ガス10Gは、再生ロータリーキルン1において、過熱水蒸気を生成するために使用される。
次に、本実施形態の再生ロータリーキルンの作用効果について説明する。本実施形態の再生ロータリーキルン1によると、連続的に炭素繊維10Sを回収することができる。また、管体3の回転に伴って、CFRP10を撹拌することができる。このため、回収した炭素繊維10Sを、均質化することができる。
本実施形態の再生ロータリーキルンと第一実施形態の再生ロータリーキルンとの相違点は、供給管において、水から過熱水蒸気が生成される点である。また、過熱水蒸気生成部が、廃熱回収ボイラ、回収部加熱部を備えていない点である。また、第一燃焼室と第二燃焼室とが、離間して配置されている点である。また、過熱水蒸気、窒素ガスが、炉心管の後端(CFRPの搬送方向における下流端)開口から、炉心管の内部に供給されている点である。また、回収部にサイクロンフィルタが配置されていない点である。ここでは、相違点についてのみ説明する。
以上、本発明の再生ロータリーキルンの実施の形態について説明した。しかしながら、実施の形態は上記形態に特に限定されるものではない。当業者が行いうる種々の変形的形態、改良的形態で実施することも可能である。
2:過熱水蒸気生成部、20:廃熱回収ボイラ、200:ハウジング、200a:加熱室、200b:ボイラ用バーナ、200c:ボイラ用空気供給管、201:配管、202:排気筒、202a:第四通路、21:回収部加熱部、210:配管、211:ジャケット、22:供給管
3:管体、30:炉心管、31:タイヤ、32:接続管、320:第一通路
4:燃焼部、4a:第一部、4b:第二部、4c:接続筒、4d:排気筒、40:外壁、40a:外壁、40b:外壁、40c:第二通路、40d:第三通路、41:断熱材、41a:断熱材、41b:断熱材、42:隔壁、420:第二通路、43a:第一燃焼室、43b:第二燃焼室、44a:第一バーナ、44b:第二バーナ、45a:第一空気供給管、45b:第二空気供給管、46:接続筒、460:第三通路
5:ガス供給部、50:ガス供給管
6:回収部、60:タンク、61:下流端カバー、62:配管、63:サイクロンフィルタ(分級部)、64:配管、65:長繊維タンク、66:バグフィルタ、66a:濾布、67:短繊維タンク、68:ブロワ
7:供給部、70:スクリューフィーダ、71:ホッパ、72:切断機(切断部)、73:上流端カバー
10:CFRP、10G:ガス、10S:炭素繊維、10Sa:炭素繊維(長繊維)、10Sb:炭素繊維(短繊維)、90:ローラ
A:加熱区間
Claims (9)
- 過熱水蒸気を生成する過熱水蒸気生成部と、
軸周りに回転可能であって、該過熱水蒸気を供給しながら、マトリックス樹脂と炭素繊維とを有する炭素繊維強化樹脂を加熱することにより、該マトリックス樹脂から可燃性のガスを生成し、該炭素繊維強化樹脂から該炭素繊維を抽出する加熱区間を有する管体と、
該管体の外部に配置され、該加熱区間から導入される該ガスを燃焼させることにより該加熱区間を加熱する第一燃焼室と、
該第一燃焼室から導入される該ガスを燃焼させることにより、該過熱水蒸気を生成するための熱を供給する第二燃焼室と、
を備え、該炭素繊維強化樹脂から該炭素繊維を回収する再生ロータリーキルン。 - 前記過熱水蒸気生成部は、
水を加熱し水蒸気を生成する廃熱回収ボイラと、
前記第二燃焼室を経由して、該廃熱回収ボイラと前記管体とを連結し、該水蒸気を加熱することにより前記過熱水蒸気を生成する供給管と、
を有し、
該供給管の内部の該水蒸気は、該供給管の管壁を介して伝達される該第二燃焼室の前記熱により、加熱される請求項1に記載の再生ロータリーキルン。 - 前記廃熱回収ボイラは、前記第二燃焼室から導入される前記ガスを燃焼させることにより、前記水を加熱し前記水蒸気を生成する請求項2に記載の再生ロータリーキルン。
- 前記廃熱回収ボイラは、前記第二燃焼室から導入される前記ガスの熱により、前記水を加熱し前記水蒸気を生成する請求項2に記載の再生ロータリーキルン。
- 前記第二燃焼室は、前記第一燃焼室に並置されている請求項1ないし請求項4のいずれかに記載の再生ロータリーキルン。
- 前記管体の内部に窒素ガスを供給するガス供給部を備える請求項1ないし請求項5のいずれかに記載の再生ロータリーキルン。
- さらに、前記管体の下流側に、該管体において抽出された前記炭素繊維を回収する回収部を備え、
前記過熱水蒸気生成部は、該回収部を加熱する請求項1ないし請求項6のいずれかに記載の再生ロータリーキルン。 - 前記回収部は、前記炭素繊維を分級する分級部を有する請求項7に記載の再生ロータリーキルン。
- さらに、前記管体の上流側に、前記炭素繊維強化樹脂を所定の大きさに切断する切断部を備える請求項1ないし請求項8のいずれかに記載の再生ロータリーキルン。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2015507272A JP5876968B1 (ja) | 2014-10-02 | 2014-10-02 | 再生ロータリーキルン |
US14/902,273 US10094559B2 (en) | 2014-10-02 | 2014-10-02 | Regeneration rotary kiln |
PCT/JP2014/076430 WO2016051572A1 (ja) | 2014-10-02 | 2014-10-02 | 再生ロータリーキルン |
EP14895490.2A EP3026341B1 (en) | 2014-10-02 | 2014-10-02 | Regeneration rotary kiln |
Applications Claiming Priority (1)
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JP2018122299A (ja) * | 2018-03-13 | 2018-08-09 | 住友大阪セメント株式会社 | 樹脂廃棄物の処理方法、及び樹脂廃棄物の処理システム |
JP2018132271A (ja) * | 2017-02-17 | 2018-08-23 | 高砂工業株式会社 | ロータリーキルン |
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JP2020203996A (ja) * | 2019-06-18 | 2020-12-24 | 旭化成株式会社 | 強化複合材料を再生する方法 |
JP2020203997A (ja) * | 2019-06-18 | 2020-12-24 | 旭化成株式会社 | 強化複合材料を処理する方法 |
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JP2016147437A (ja) * | 2015-02-12 | 2016-08-18 | 住友大阪セメント株式会社 | 樹脂廃棄物の処理方法、及び樹脂廃棄物の処理システム |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003334529A (ja) * | 2002-05-21 | 2003-11-25 | Kosaka Seiren Kk | 基板類処理方法 |
JP2004340448A (ja) * | 2003-05-14 | 2004-12-02 | Takasago Ind Co Ltd | 外熱式ロータリキルンおよびその操業方法 |
JP2013147545A (ja) * | 2012-01-18 | 2013-08-01 | Doshisha | 再生炭素繊維の製造方法 |
JP2013199607A (ja) * | 2012-03-26 | 2013-10-03 | Doshisha | 炭素繊維の回収方法 |
JP2013224357A (ja) * | 2012-04-20 | 2013-10-31 | Takasago Ind Co Ltd | Co2固定化方法およびco2固定化装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5935387A (en) * | 1992-02-17 | 1999-08-10 | Siemens Aktiengesellschaft | Method and device for heating a low temperature carbonization drum and low temperature carbonization/combustion plant having the device |
JP3396313B2 (ja) * | 1994-11-21 | 2003-04-14 | 三菱重工業株式会社 | 有機系廃棄物のガス化方法 |
JP2002080854A (ja) * | 2000-09-08 | 2002-03-22 | Chugoku Mentenance:Kk | 有機物の再資源化装置及び再資源化方法、並びに炭化物の製造装置、電源装置及び酢液の製造装置 |
JP4199758B2 (ja) * | 2005-08-25 | 2008-12-17 | 株式会社タナベ | 混合物および混合廃棄物の脱脂およびリサイクル装置 |
TW200918839A (en) * | 2007-10-26 | 2009-05-01 | World Environmental Design Co Ltd | Heat treatment apparatus |
JP5498144B2 (ja) * | 2009-12-09 | 2014-05-21 | 一般財団法人ファインセラミックスセンター | 炭素繊維の回収方法 |
JP5347056B2 (ja) * | 2011-08-30 | 2013-11-20 | カーボンファイバーリサイクル工業株式会社 | 再生炭素繊維の製造装置及び再生炭素繊維の製造方法 |
PT2783764T (pt) | 2013-03-28 | 2016-10-04 | Elg Carbon Fibre Int Gmbh | Pirólise e procedimento para a recuperação de fibras de carbono a partir de plásticos que contenham fibras de carbono e fibras de carbono recuperadas |
-
2014
- 2014-10-02 JP JP2015507272A patent/JP5876968B1/ja active Active
- 2014-10-02 EP EP14895490.2A patent/EP3026341B1/en active Active
- 2014-10-02 WO PCT/JP2014/076430 patent/WO2016051572A1/ja active Application Filing
- 2014-10-02 US US14/902,273 patent/US10094559B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003334529A (ja) * | 2002-05-21 | 2003-11-25 | Kosaka Seiren Kk | 基板類処理方法 |
JP2004340448A (ja) * | 2003-05-14 | 2004-12-02 | Takasago Ind Co Ltd | 外熱式ロータリキルンおよびその操業方法 |
JP2013147545A (ja) * | 2012-01-18 | 2013-08-01 | Doshisha | 再生炭素繊維の製造方法 |
JP2013199607A (ja) * | 2012-03-26 | 2013-10-03 | Doshisha | 炭素繊維の回収方法 |
JP2013224357A (ja) * | 2012-04-20 | 2013-10-31 | Takasago Ind Co Ltd | Co2固定化方法およびco2固定化装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3026341A4 * |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018132271A (ja) * | 2017-02-17 | 2018-08-23 | 高砂工業株式会社 | ロータリーキルン |
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JP2019123850A (ja) * | 2018-01-12 | 2019-07-25 | 永虹先進材料股▲ふん▼有限公司 | 炭素繊維回收方法 |
JP2019127040A (ja) * | 2018-01-25 | 2019-08-01 | 東レ株式会社 | リサイクル炭素繊維の製造方法 |
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JP2020152784A (ja) * | 2019-03-19 | 2020-09-24 | 株式会社栗本鐵工所 | 繊維強化プラスチックのリサイクル方法 |
JP7270429B2 (ja) | 2019-03-19 | 2023-05-10 | 株式会社栗本鐵工所 | 繊維強化プラスチックのリサイクル方法 |
JP2020203996A (ja) * | 2019-06-18 | 2020-12-24 | 旭化成株式会社 | 強化複合材料を再生する方法 |
JP2020203997A (ja) * | 2019-06-18 | 2020-12-24 | 旭化成株式会社 | 強化複合材料を処理する方法 |
JP7328019B2 (ja) | 2019-06-18 | 2023-08-16 | 旭化成株式会社 | 強化複合材料を再生する方法 |
JP7418728B1 (ja) | 2023-05-16 | 2024-01-22 | 是安 正博 | 無機繊維製品処理システム |
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US20160305649A1 (en) | 2016-10-20 |
EP3026341A1 (en) | 2016-06-01 |
EP3026341A4 (en) | 2017-05-10 |
US10094559B2 (en) | 2018-10-09 |
JP5876968B1 (ja) | 2016-03-02 |
EP3026341B1 (en) | 2019-07-03 |
JPWO2016051572A1 (ja) | 2017-04-27 |
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