CN114789933B - Equipment and method for preparing aerogel felt on large scale - Google Patents
Equipment and method for preparing aerogel felt on large scale Download PDFInfo
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- CN114789933B CN114789933B CN202210465859.4A CN202210465859A CN114789933B CN 114789933 B CN114789933 B CN 114789933B CN 202210465859 A CN202210465859 A CN 202210465859A CN 114789933 B CN114789933 B CN 114789933B
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- 239000004964 aerogel Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000835 fiber Substances 0.000 claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 40
- 239000003292 glue Substances 0.000 claims abstract description 30
- 238000011068 loading method Methods 0.000 claims abstract description 23
- 239000002904 solvent Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 230000001360 synchronised effect Effects 0.000 claims description 69
- 239000012528 membrane Substances 0.000 claims description 56
- 239000000463 material Substances 0.000 claims description 37
- 238000003825 pressing Methods 0.000 claims description 33
- 239000000428 dust Substances 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 230000033001 locomotion Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 239000000872 buffer Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000003377 acid catalyst Substances 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- -1 polypropylene Polymers 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 108010009736 Protein Hydrolysates Proteins 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 239000002585 base Substances 0.000 claims description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 230000003301 hydrolyzing effect Effects 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims description 2
- 239000000413 hydrolysate Substances 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 9
- 238000007598 dipping method Methods 0.000 abstract description 8
- 230000032683 aging Effects 0.000 abstract description 6
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 239000007888 film coating Substances 0.000 description 8
- 238000009501 film coating Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- 239000000758 substrate Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 150000007529 inorganic bases Chemical class 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 150000007530 organic bases Chemical class 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical compound CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 description 1
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 description 1
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 235000011054 acetic acid Nutrition 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- WEHWNAOGRSTTBQ-UHFFFAOYSA-N dipropylamine Chemical compound CCCNCCC WEHWNAOGRSTTBQ-UHFFFAOYSA-N 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 229940102253 isopropanolamine Drugs 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 229940018564 m-phenylenediamine Drugs 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
- B65H37/02—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations for applying adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/511—Processing surface of handled material upon transport or guiding thereof, e.g. cleaning
- B65H2301/5113—Processing surface of handled material upon transport or guiding thereof, e.g. cleaning applying adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/514—Modifying physical properties
- B65H2301/5143—Warming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/174—Textile, fibre
Abstract
The invention provides equipment and a method for preparing aerogel felts in a large scale, and relates to the technical field of aerogel felts, wherein the equipment comprises a conveying mechanism, a glue solution loading mechanism and an impermeable film layer, the conveying mechanism comprises a frame and a conveying part, the conveying part comprises a conveying belt and a driving piece for driving the conveying belt to convey, and a heating belt capable of heating is arranged on the conveying belt; the glue solution loading mechanism carries out glue solution loading treatment on the fiber felt body to obtain a wet fiber felt; the impermeable film layer covers the wet fiber mat surface at the conveyor belt. The method comprises the following steps: carrying out glue solution loading treatment on the fiber felt body to obtain a wet fiber felt; and conveying the wet fiber felt, and covering the surface of the wet fiber felt with an impermeable film layer to carry out film covering and gel to obtain the gel felt. Realizes continuous gum dipping and aging of the fiber felt body and can reduce volatilization of sol solvent in large-scale production.
Description
Technical Field
The invention belongs to the technical field of aerogel felt preparation, and particularly provides equipment and a method for preparing aerogel felt in a large scale.
Background
The aerogel felt is a flexible heat-insulating felt which is formed by compounding nano silicon dioxide or metal aerogel serving as a main material with carbon fiber or ceramic glass fiber cotton or pre-oxidized fiber felt through a special process. It features low heat conductivity coefficient, certain tensile and compressive strength, and belongs to a new heat insulating material.
Along with the wide demands and the application of heat preservation and energy conservation in various fields, the application range of the aerogel felt is continuously enlarged, and the quality requirement of the aerogel felt is also continuously improved. Currently, aerogel blanket production tends to be mass, scale-up.
The 202080045596.0 patent discloses an aerogel blanket made by the following method of manufacture: 1) Adding a catalyzed sol and a felt substrate to a reaction vessel such that the catalyzed sol impregnates the felt substrate; and 2) gelling the felt substrate impregnated with the catalytic sol while rotating the felt substrate.
In terms of selection of the sol, the solvent of the aerogel sol needs to satisfy the condition of excellent compatibility with the sol precursor and water. Generally, when miscibility with water and aerogel prepared later is considered, solvents such as methanol, ethanol, etc. can be used, and slow gel process and volatilization of the solvent during the gel process are one of disadvantages of mass production of aerogel blanket.
Accordingly, there is a need in the art for an apparatus and method for large-scale production of aerogel blankets to address the above-described problems.
Disclosure of Invention
In order to solve the problems, the invention provides equipment and a method for preparing aerogel felts in a large scale, which realize continuous gum dipping and aging of fiber felts and can reduce volatilization of sol solvents in large-scale production.
In one aspect, the invention provides equipment for preparing aerogel felts in a large scale, which comprises a conveying mechanism, a glue solution loading mechanism and an impermeable film layer, wherein the glue solution loading mechanism and the impermeable film layer are arranged on the conveying mechanism;
the conveying mechanism comprises a rack and a conveying part arranged on the rack, the conveying part comprises a conveying belt and a driving piece for driving the conveying belt to convey, and the conveying belt is provided with a heating belt capable of heating;
the glue solution loading mechanism carries out glue solution loading treatment on the fiber felt body to obtain a wet fiber felt;
the impermeable film layer covers the wet fiber mat surface at the conveyor belt.
The technical effect of this scheme is: the equipment can realize continuous gum dipping and aging of the fiber felt, and the film is coated after gum dipping of the fiber felt, so that volatilization of an alcohol solvent in sol is reduced, heat preservation from gum dipping to gel process is realized, and the product quality of the aerogel felt is improved.
In the preferable technical scheme of the equipment for preparing the aerogel felt on a large scale, the air-impermeable film layer is an annular film material, and the air-impermeable film layer performs closed loop circulation motion above the conveyor belt through a film covering mechanism.
In the preferred technical scheme of the equipment for preparing the aerogel felt on a large scale, the film covering mechanism comprises a first film covering component and a second film covering component which are arranged on the frame, an annular film material is arranged on the first film covering component and the second film covering component in a surrounding mode, one side, close to the conveying belt, of the annular film material is in contact with the wet fiber felt, a driving assembly is arranged on the first film covering component, and the driving assembly drives the annular film material to do closed-loop circulation motion above the conveying belt.
In the preferred technical scheme of the equipment for preparing the aerogel felt on a large scale, the first film covering component comprises a first supporting connecting piece and a synchronous roller and a film pressing roller which are rotatably connected between the first supporting connecting piece, the first supporting connecting piece is fixedly connected with the frame, and the film pressing roller is positioned close to the conveyor belt;
the film covering component II comprises a tensioning device, a supporting connecting piece II, a tensioning roller I and a tensioning roller II, the supporting connecting piece II comprises a connecting seat and a tensioning guide shaft connected with the connecting seat, the tensioning roller I and the tensioning roller II are rotatably connected between the connecting seats, the tensioning roller II is located at a position close to the conveyor belt, the tensioning guide shaft is in sliding connection with the frame along the conveying direction of the conveyor belt, and the tensioning device is arranged between the connecting seat and the frame;
the annular membrane is enclosed and located on synchronizing roll, film pressing roll, tensioning roller II and the tensioning roller I, drive assembly drive synchronizing roll drives annular membrane follows the conveyer belt synchronous motion, overspeed device tensioner makes the connecting seat drive tensioning roller I and tensioning roller II tensioning annular membrane.
The technical effect of this scheme is: the first and second film covering components are tensioned through the tensioning device, the annular film is driven to synchronously move with the conveyor belt through the driving component, synchronism of the film covering process is guaranteed, and service life of the annular film is prolonged.
In the preferred technical scheme of the equipment for preparing aerogel felts in large scale, the first supporting connecting piece comprises a connecting plate and a supporting plate, the connecting plate is fixedly connected with the frame, the supporting plate is rotationally connected with the connecting plate, and the synchronous roller and the film pressing roller are arranged between the supporting plates; the driving assembly comprises a synchronous roller and a synchronous belt, the synchronous roller is positioned at the end part of the film pressing roller, a boss for sleeving the synchronous belt is reserved at one end of the synchronous roller, which is away from the film pressing roller, and is connected with the supporting plate through a boss I, a boss II for sleeving the synchronous belt is reserved at the end part of the synchronous roller and is connected with the supporting plate through a boss II, and the synchronous roller is in transmission connection with the synchronous roller through the synchronous belt; the connecting plate is provided with a pressing assembly, and the pressing assembly presses the supporting plate to rotate relative to the connecting plate, so that the synchronous rollers on the supporting plate are pressed on the conveyor belt.
The technical effect of this scheme is: through locating synchronous gyro wheel pressure on the conveyer belt, make the linear velocity of conveyer belt the same with the linear velocity of synchronous gyro wheel and synchronizing roll, realize annular membrane material and conveyer belt's synchronous activity, the speed response is fast, synchronism is stable, avoids the membrane not to follow the felt, causes aerogel felt and the wearing and tearing of membrane, improves the life of membrane, reduces the loaded down with trivial details nature and the manual labor volume and the intensity of labour of operation.
In the preferable technical scheme of the equipment for preparing the aerogel felt on a large scale, the frame is provided with the cross beams perpendicular to the conveying direction of the conveyor belt, the second film covering component is arranged between two adjacent cross beams,
the tensioning device comprises a tensioning spring sleeved outside the tensioning guide shaft, two ends of the tensioning spring respectively abut against the adjacent cross beam and the connecting seat, and a tensioning buffer block is arranged on one side, deviating from the tensioning guide shaft, of the connecting seat.
The technical effect of this scheme is: the tensioning spring provides proper tensioning force, so that the annular membrane material is smooth, the stability of the membrane covering process is guaranteed, and when the tensioning buffer block is arranged to prevent the annular membrane material from being broken accidentally, the second membrane covering component impacts other parts.
In the preferred technical scheme of the equipment for preparing the aerogel felt on a large scale, a brush roller is rotationally connected between the supporting plates, the annular membrane material passes through the space between the brush roller and the synchronous roller, a dust collection shell is arranged above the brush roller, the dust collection shell is connected with an air suction pump, and a collecting tank is arranged below the brush roller;
the frame is provided with a plurality of supporting rollers, the supporting rollers are positioned between the first film covering component and the second film covering component and are distributed at intervals along the conveying direction of the conveying belt, and the supporting rollers are positioned in the ring of the annular film material and support the annular film material;
the annular membrane material is polyimide membrane, polyester membrane, polyurethane membrane, polypropylene membrane, polyethylene membrane or coating cloth.
The technical effect of this scheme is: the brush roller cleans the excessive glue solution on the film and the dust after ageing the glue solution, so that the film can be recycled; the dust collection shell is connected with the air suction pump, dust brushed down by the hairbrush roller can be sucked away, and the dust which is not sucked away is collected by the collecting tank; the support roller supports the annular membrane material, so that the annular membrane material is prevented from sinking between the first membrane covering component and the second membrane covering component, and the annular membrane material is pulled, and the service life of the annular membrane material is prevented from being influenced.
On the other hand, the invention also provides a method for preparing the aerogel felt on a large scale, which comprises the following steps:
step S1, carrying out glue solution loading treatment on a fiber felt body to obtain a wet fiber felt;
and S2, conveying the wet fiber felt, and enabling the impermeable film layer to cover the surface of the wet fiber felt for film covering and gel to obtain the gel felt.
In the step S1, the silica sol is immersed and/or sprayed to a fiber felt body through a glue solution loading mechanism; the silica sol is prepared by mixing an organosilicon source, an alcohol solvent, an acid catalyst, a base catalyst and water; or alternatively
Mixing an organic silicon source, an alcohol solvent, an acid catalyst and water, fully hydrolyzing for 1-24 hours to obtain a silicon source hydrolysate, and adding an alkali catalyst into the silicon source hydrolysate.
In the preferred technical scheme of the method for preparing aerogel felts in large scale, in the step S2, in the conveying process, the transmission belt is heated to 25-70 ℃ by a heating belt.
The technical effects of the method for preparing the aerogel blanket on a large scale are the same as those of the equipment for preparing the aerogel blanket on a large scale, and are not repeated here.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of an apparatus for large-scale production of aerogel blankets in accordance with the present invention;
FIG. 2 is a schematic view of the gel section of an apparatus for large-scale production of aerogel blankets in accordance with the present invention;
FIG. 3 is a schematic structural view of a first membrane-covering component of an apparatus for large-scale production of aerogel blankets in accordance with the present invention;
FIG. 4 is a partial view of a first membrane-covered component of an apparatus for large-scale production of aerogel blankets in accordance with the present invention;
FIG. 5 is a schematic structural view of a second membrane-covering component of an apparatus for large-scale production of aerogel blankets in accordance with the present invention;
FIG. 6 is a partial view of a second part of a membrane covered by an apparatus for large-scale production of aerogel blankets in accordance with the present invention.
List of reference numerals: 1. a conveying mechanism; 11. a frame; 111. a first beam; 112. a second cross beam; 12. a conveyor belt; 13. a driving motor; 2. a glue solution loading mechanism; 3. a film covering mechanism; 31. a first film-coating component; 310. a first supporting connecting piece; 311. a synchronizing roller; 312. film pressing rollers; 313. a connecting plate; 314. a support plate; 315. a brush roller; 316. a dust collection shell; 317. a collection tank; 32. a second film-coating component; 320. a second supporting connecting piece; 321. a tensioning device; 3211. tensioning a guide shaft; 3212. tensioning a spring; 3213. tensioning buffer blocks; 322. tensioning a first roller; 323. tensioning a second roller; 324. a connecting seat; 33. an annular membrane; 41. synchronizing the rollers; 42. a synchronous belt; 43. a tensioning wheel; 51. a support base; 52. a rotating lever; 53. a compression screw; 54. an adjusting nut; 6. and (5) supporting rollers.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the description of the present invention, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships, which are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The invention discloses a concrete embodiment of equipment for preparing aerogel felt in a large scale, which comprises the following steps:
as shown in fig. 1 and fig. 2, an apparatus for preparing an aerogel blanket in a large scale includes a conveying mechanism 1, a glue solution loading mechanism 2 and an impermeable film layer, wherein the glue solution loading mechanism 2 and the impermeable film layer are arranged on the conveying mechanism 1, the apparatus for preparing the aerogel blanket in a large scale is divided into a glue dipping area and a gel area, the conveying mechanism 1 penetrates through the glue dipping area and the gel area, the glue solution loading mechanism 2 is positioned in the glue dipping area, and the impermeable film layer is positioned in the gel area.
The conveying mechanism 1 comprises a frame 11 and a conveying part arranged on the frame 11, wherein the conveying part comprises a conveying belt 12 and a driving motor 13 for driving the conveying belt 12 to convey, and heating belts capable of heating are uniformly distributed on the conveying belt; the glue solution loading mechanism 2 carries out glue solution loading treatment on the fiber felt body to obtain a wet fiber felt; the impermeable film layer covers the wet fiber mat surface at the conveyor belt 12.
The impermeable film layer is an annular film material 33, the annular film material 33 is a closed-loop structure formed by encircling the impermeable film layer, and the annular film material 33 performs closed-loop circulation motion above the conveyor belt 12 through the film covering mechanism 3. The film covering mechanism 3 comprises a first film covering component 31 and a second film covering component 32 which are arranged on the frame 11, an annular film material 33 is arranged on the first film covering component 31 and the second film covering component 32 in a surrounding mode, one side, close to the conveyor belt 12, of the annular film material 33 is in contact with the wet fiber felt, a driving assembly is arranged on the first film covering component 31, and the driving assembly drives the annular film material 33 to perform closed-loop circulation motion above the conveyor belt 12. Continuous impregnation and aging of the fiber felt are realized, film coating is carried out after the fiber felt is impregnated, volatilization of an alcohol solvent in sol is reduced, heat preservation in the process from impregnation to gel is realized, and the product quality of the aerogel felt is improved.
As shown in fig. 3, the first film-coating member 31 includes two first support links 310 and a synchronizing roller 311 and a film-pressing roller 312 rotatably connected between the two first support links 310. The first support connector 310 includes a connection plate 313 and a support plate 314, the connection plate 313 is fixedly connected with the frame 11, and the support plate 314 is disposed on one side of the two connection plates 313 close to each other. The rotating shafts at the two ends of the synchronizing roller 311 penetrate through the supporting plates 314 and are rotationally connected with the connecting plates 313, the supporting plates 314 are rotationally connected with the connecting plates 313 through the rotating shafts of the synchronizing roller 311, and the film pressing roller 312 is rotationally connected between the positions, close to the lower ends, of the two supporting plates 314.
The driving assembly comprises a synchronous roller 41 and a synchronous belt 42, the synchronous roller 41 is positioned at two ends of a film pressing roller 312, a boss of the synchronous belt 42 is reserved at one end, deviating from the film pressing roller 312, of the synchronous roller 41 and is sleeved with the boss, the boss is connected with a supporting plate 314 through the boss, a boss II of the synchronous belt 42 is reserved at the end of the synchronous roller 311 and is connected with the supporting plate 314 through the boss II, and the synchronous roller 41 and the synchronous roller 311 are in transmission connection through the synchronous belt 42, so that synchronous transmission of the synchronous roller 41 and the synchronous roller 311 is realized. The supporting plate 314 is rotatably connected with a tensioning wheel 43, and the tensioning wheel 43 abuts against the synchronous belt 42 to tension the synchronous belt 42.
As shown in fig. 4, the connection plate 313 is provided with a pressing assembly that presses the synchronizing roller 41 against the conveyor belt 12. The compression assembly comprises a supporting seat 51, a rotating rod 52 and a compression screw 53, wherein the supporting seat 51 is fixedly connected to the upper end face of the connecting plate 313, the rotating rod 52 penetrates through the supporting seat 51 along the extending direction of the film pressing roller 312 and is rotationally connected with the supporting seat 51, a connecting through hole perpendicular to the central axis of the rotating rod 52 is formed in the rotating rod 52, the compression screw 53 penetrates through the connecting through hole and is slidingly connected with the rotating rod 52, the lower end of the compression screw 53 is rotationally connected with the supporting plate 314 through a bolt, adjusting nuts 54 are in threaded connection with parts of the compression screw 53, which are located on two sides of the rotating rod 52, and the adjusting nuts 54 are abutted against two sides of the rotating rod 52, so that the relative position between the compression screw 53 and the rotating rod 52 is fixed.
By adjusting the pressing screw 53, the pressing screw 53 presses the synchronous roller 41 on the supporting plate 314 to contact with the conveyor belt 12, and the power provided by the conveyor belt 12 is transmitted to the synchronous roller 311 through the synchronous roller 41 and the synchronous belt 42, so that the synchronous roller 311 drives the annular membrane 33 to rotate. The compacting component enables enough friction force to be generated between the synchronous roller 41 and the conveyor belt 12, ensures that the linear speed of the conveyor belt 12 is the same as that of the synchronous roller 41 and the synchronous roller 311, realizes synchronous movement of the annular membrane 33 and the conveyor belt 12, and avoids abrasion of aerogel felt and membrane caused by membrane non-following felt.
Referring to fig. 3 again, a brush roller 315 is rotatably connected between the support plates 314, the brush roller 315 is located above the synchronizing roller 311, a dust collection shell 316 is disposed above the brush roller 315, the dust collection shell 316 is connected with an air pump, and a collecting tank 317 is disposed below the brush roller 315. The annular membrane 33 passes through the gap between the brush roller 315 and the synchronous roller 311, and the brush roller 315 cleans excessive glue solution on the annular membrane 33 and dust after ageing of the glue solution, so that the annular membrane 33 can be recycled; the dust collection shell 316 is connected with the air suction pump, can suck dust brushed down by the brush roller 315, and the collecting groove 317 collects dust which is not sucked away.
As shown in fig. 5, the second film covering member 32 includes two tensioning devices 321, two second support links 320, and a first tensioning roller 322 and a second tensioning roller 323 rotatably connected between the second support links 320. The second supporting connection piece comprises a connecting seat 324 and a fixing plate, wherein the connecting seat 324 is vertically symmetrically arranged, the fixing plate is connected with the upper connecting seat and the lower connecting seat 324, the first tensioning roller 322 is rotationally connected between the two connecting seats 324 positioned above, and the second tensioning roller 323 is rotationally connected between the two connecting seats 324 positioned below.
As shown in fig. 5 and 6, the frame 11 is provided with a beam perpendicular to the conveying direction of the conveyor belt 12, and the second film-covering member 32 is disposed between two adjacent beams, which are defined as a first beam 111 and a second beam 112, respectively. One side of the upper connecting seat 324 and the lower connecting seat 324, which is close to the first beam 111, is provided with a tensioning guide shaft 3211, the tensioning guide shaft 3211 is distributed along the conveying direction of the conveying belt 12, one end of the tensioning guide shaft 3211 is fixedly connected with a fixed plate between the upper connecting seat 324 and the lower connecting seat 324, and the other end of the tensioning guide shaft is in sliding connection with the first beam 111. The tensioning device 321 comprises a tensioning spring 3212 sleeved outside the tensioning guide shaft 3211, two ends of the tensioning spring 3212 respectively prop against the first beam 111 and the fixed plate, a tensioning buffer block 3213 is arranged on one side, close to the second beam 112, of the upper connecting seat 324 and the lower connecting seat 324, and the tensioning buffer block 3213 is fixedly connected with the fixed plate.
The annular membrane 33 is arranged around the synchronous roller 311, the membrane pressing roller 312, the tensioning roller II 323 and the tensioning roller I322, and the tensioning spring 3212 provides proper tensioning force to level the annular membrane 33; when the annular membrane 33 is broken accidentally, the second membrane covering component 32 moves towards the direction close to the second beam 112 by the resilience force of the tensioning spring 3212, and the tensioning buffer block 3213 forms buffer, so that the second membrane covering component 32 is prevented from impacting the second beam 112.
Referring to fig. 1 and 2 again, three support rollers 6 are disposed on the frame 11, the three support rollers 6 are located between the first film covering component 31 and the second film covering component 32 and are distributed at intervals along the conveying direction of the conveying belt 12, the support rollers 6 are rotatably connected with the frame 11 through shaft mounting seats, the support rollers 6 are located in the ring of the annular film material 33 and support the annular film material 33, and the situation that the portion of the annular film material 33 located between the first film covering component 31 and the second film covering component 32 sinks to cause pulling on the annular film material 33 to affect the service life of the annular film material 33 is avoided.
The annular membrane material 33 is one of polyimide membrane, polyester membrane, polyurethane membrane, polypropylene membrane, polyethylene membrane and coating cloth.
In the above embodiment, the first film coating mechanism includes a synchronous roller and a film pressing roller, the second film coating mechanism includes a tensioning roller and a tensioning roller, in other embodiments, the first film coating mechanism includes only the film pressing roller, the second film coating mechanism includes only the tensioning roller, the annular film material encloses the film pressing roller and the tensioning roller, the synchronous roller is disposed at two ends of the film pressing roller and is connected with the film pressing roller, and the synchronous roller directly transmits the power of the conveyor belt to the film pressing roller, so that the film pressing roller drives the annular film material to perform closed loop circulation.
In the above embodiment, the driving assembly includes a synchronous roller and a synchronous belt, in other embodiments, the driving assembly includes a driving motor, an output end of the driving motor is connected with a rotating shaft of the synchronous roller, and synchronous movement of the annular membrane and the belt is achieved by controlling a rotation speed of the driving motor connected with the synchronous roller and the driving motor for driving the belt to transmit.
In the above-mentioned embodiment, compress tightly the subassembly and include supporting seat, dwang and compression screw, in other embodiments, compress tightly the subassembly and include supporting seat, dwang and electric telescopic handle, electric telescopic handle's one end and dwang fixed connection, the other end is connected with the backup pad rotation, through the length of control electric telescopic handle, makes electric telescopic handle extrusion backup pad, makes synchronous gyro wheel in the backup pad and conveyer belt contact.
On the other hand, the invention also provides a method for preparing the aerogel felt on a large scale, which comprises the following steps:
step S1, carrying out glue solution loading treatment on a fiber felt body to obtain a wet fiber felt;
and S2, conveying the wet fiber felt to a gel area by a conveying belt 12, and coating and gelling the wet fiber felt by a coating mechanism 3 of the gel area to obtain a gel felt.
In this embodiment, the step S1 specifically includes the following steps:
mixing an organosilicon source, an alcohol solvent, an acid catalyst, an alkali catalyst and water, and putting the mixture into a fiber felt for impregnation to obtain a wet fiber felt; or alternatively
Mixing an organic silicon source, an alcohol solvent, an acid catalyst and water, fully hydrolyzing for 1-24 hours to obtain a silicon source hydrolysate, adding an alkali catalyst into the silicon source hydrolysate, and spraying the mixture to a fiber felt to obtain the wet fiber felt.
Wherein the acid catalyst comprises an inorganic acid and/or an organic acid; the inorganic acid preferably comprises one or more of hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, hydrofluoric acid, hypochlorous acid, sulfurous acid, and nitrous acid; the organic acid preferably comprises one or more of oxalic acid, acetic acid, oxalic acid, lactic acid, benzoic acid, methanesulfonic acid, acrylic acid and oleic acid.
The base catalyst comprises an inorganic base and/or an organic base. The inorganic base preferably comprises one or more of sodium hydroxide, potassium hydroxide, ammonia water, ammonium fluoride, ammonium bicarbonate, sodium carbonate and sodium bicarbonate; the organic base preferably comprises one or more of ethanolamine, diethanolamine, methylamine, dimethylamine, ethylamine, diethylamine, propylamine, dipropylamine, isopropanolamine, aniline, o-phenylenediamine, m-phenylenediamine, p-phenylenediamine.
In the embodiment, in step S2, the driving belt is heated to 25-70 ℃ by a heating belt on the driving belt in the conveying process, so as to shorten the gel time.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. The equipment for preparing the aerogel felt on a large scale is characterized by comprising a conveying mechanism, a glue solution loading mechanism and an impermeable film layer, wherein the glue solution loading mechanism and the impermeable film layer are arranged on the conveying mechanism;
the conveying mechanism comprises a rack and a conveying part arranged on the rack, the conveying part comprises a conveying belt and a driving piece for driving the conveying belt to convey, and the conveying belt is provided with a heating belt capable of heating;
the glue solution loading mechanism carries out glue solution loading treatment on the fiber felt body to obtain a wet fiber felt;
the impermeable film layer covers the wet fiber mat surface at the conveyor belt;
the impermeable film layer is an annular film material and performs closed-loop circulation motion above the conveyor belt through a film covering mechanism;
the film covering mechanism comprises a first film covering component and a second film covering component which are arranged on the frame, an annular film material is arranged on the first film covering component and the second film covering component in a surrounding mode, one side, close to the conveying belt, of the annular film material is in contact with the wet fiber felt, a driving assembly is arranged on the first film covering component, and the driving assembly drives the annular film material to do closed-loop circulation motion above the conveying belt;
the first laminating component comprises a first supporting connecting piece and a synchronous roller and a film pressing roller which are rotatably connected between the first supporting connecting piece, the first supporting connecting piece is fixedly connected with the frame, and the film pressing roller is positioned at a position close to the conveying belt;
the first support connecting piece comprises a connecting plate and a supporting plate, the connecting plate is fixedly connected with the frame, the supporting plate is rotationally connected with the connecting plate, and the synchronous roller and the film pressing roller are arranged between the supporting plates; the driving assembly comprises a synchronous roller and a synchronous belt, the synchronous roller is positioned at the end part of the film pressing roller, a boss for sleeving the synchronous belt is reserved at one end of the synchronous roller, which is away from the film pressing roller, and is connected with the supporting plate through a boss I, a boss II for sleeving the synchronous belt is reserved at the end part of the synchronous roller and is connected with the supporting plate through a boss II, and the synchronous roller is in transmission connection with the synchronous roller through the synchronous belt; the connecting plate is provided with a pressing assembly, and the pressing assembly presses the supporting plate to rotate relative to the connecting plate, so that the synchronous rollers on the supporting plate are pressed on the conveyor belt;
the film covering component II comprises a tensioning device, a supporting connecting piece II, a tensioning roller I and a tensioning roller II, the supporting connecting piece II comprises a connecting seat and a tensioning guide shaft connected with the connecting seat, the tensioning roller I and the tensioning roller II are rotatably connected between the connecting seats, the tensioning roller II is located at a position close to the conveyor belt, the tensioning guide shaft is in sliding connection with the frame along the conveying direction of the conveyor belt, and the tensioning device is arranged between the connecting seat and the frame;
the annular membrane is enclosed and located on synchronizing roll, film pressing roll, tensioning roller II and the tensioning roller I, drive assembly drive synchronizing roll drives annular membrane follows the conveyer belt synchronous motion, overspeed device tensioner makes the connecting seat drive tensioning roller I and tensioning roller II tensioning annular membrane.
2. The device for preparing aerogel felts on a large scale according to claim 1, wherein the frame is provided with a beam perpendicular to the conveying direction of the conveyor belt, the second film covering component is arranged between two adjacent beams,
the tensioning device comprises a tensioning spring sleeved outside the tensioning guide shaft, two ends of the tensioning spring respectively abut against the adjacent cross beam and the connecting seat, and a tensioning buffer block is arranged on one side, deviating from the tensioning guide shaft, of the connecting seat.
3. The device for preparing aerogel felts on a large scale according to claim 1, wherein a brush roller is rotatably connected between the first supporting connecting pieces, the annular membrane passes between the brush roller and the synchronous roller, a dust collection shell is arranged above the brush roller, the dust collection shell is connected with an air pump, and a collecting tank is arranged below the brush roller;
the frame is provided with a plurality of supporting rollers, the supporting rollers are positioned between the first film covering component and the second film covering component and are distributed at intervals along the conveying direction of the conveying belt, and the supporting rollers are positioned in the ring of the annular film material and support the annular film material;
the annular membrane material is polyimide membrane, polyester membrane, polyurethane membrane, polypropylene membrane, polyethylene membrane or coating cloth.
4. A method for preparing aerogel blanket in a large scale apparatus for preparing aerogel blanket according to any of claims 1-3, comprising the steps of:
step S1, carrying out glue solution loading treatment on a fiber felt body to obtain a wet fiber felt;
and S2, conveying the wet fiber felt, and enabling the impermeable film layer to cover the surface of the wet fiber felt for film covering and gel to obtain the gel felt.
5. The method for preparing an aerogel blanket according to claim 4, wherein in the step S1, silica sol is impregnated and/or sprayed to the fiber blanket body through a glue loading mechanism;
the silica sol is prepared by mixing an organosilicon source, an alcohol solvent, an acid catalyst, a base catalyst and water; or alternatively
Mixing an organic silicon source, an alcohol solvent, an acid catalyst and water, fully hydrolyzing for 1-24 hours to obtain a silicon source hydrolysate, and adding an alkali catalyst into the silicon source hydrolysate.
6. The method of claim 4, wherein in step S2, the belt is heated to 25-70 ℃ by a heating belt during the conveying process.
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