CN114717689B - Low-temperature pre-oxidation equipment for activated carbon fibers - Google Patents
Low-temperature pre-oxidation equipment for activated carbon fibers Download PDFInfo
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- CN114717689B CN114717689B CN202210418949.8A CN202210418949A CN114717689B CN 114717689 B CN114717689 B CN 114717689B CN 202210418949 A CN202210418949 A CN 202210418949A CN 114717689 B CN114717689 B CN 114717689B
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
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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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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
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Abstract
The invention discloses low-temperature pre-oxidation equipment for activated carbon fibers, which comprises a processing box and a pre-oxidation box, wherein an air box is fixedly arranged on the side wall of the processing box, an air inlet is formed in one side, far away from the processing box, of the air box, a negative pressure impeller is arranged in the air box, a rotating shaft is fixedly connected to the rotation center of the negative pressure impeller, a heating table is arranged in the pre-oxidation box, a waste heat insulation structure is arranged in the processing box, the rotating shaft is connected with a transmission structure for processing carbon fiber bundles, an elastic buffer layer is arranged on the inner wall of the processing box, the processing box is filled with heat insulation liquid, the waste heat insulation structure comprises a plurality of connecting holes, the connecting holes are formed in one side, far away from the air inlet, of the air box, and connecting pipes are fixedly arranged in the connecting holes. The advantages are that: the heat preservation effect in the pre-oxidation process is improved, the temperature condition in the pre-oxidation processing process is guaranteed, and the consumption of heating energy is reduced on the other hand, so that the energy-saving effect is realized.
Description
Technical Field
The invention relates to the technical field of carbon fiber pre-oxidation, in particular to low-temperature pre-oxidation equipment for activated carbon fibers.
Background
The carbon fiber manufacturing process needs low temperature pre-oxidation, the low temperature pre-oxidation needs extremely high temperature, and needs a plurality of greenhouses with gradually increased temperature, and the existing high temperature carbonization device has poor heat preservation effect and serious energy consumption.
Through retrieving, chinese patent publication No. CN109652870B, an activated carbon fiber low temperature pre-oxidation device is disclosed, belong to carbon fiber and make technical field, including the carbonization storehouse, carbon fiber bundle and gas transportation pipeline, gas transportation pipeline includes gas transportation pipe and waste gas transportation pipe, gas transportation pipe and waste gas transportation pipe are connected respectively to carbonization storehouse both sides, one side that gas transportation pipeline is close to gas transportation pipe is equipped with the air heater, waste gas transportation pipe passes from gas transportation intraductal, through the analysis, this prior art can make the direction of movement of carbon fiber bundle and the direction of flow of the interior air of carbonization storehouse opposite, realize the multi-temperature section pre-oxidation treatment under the circumstances of setting up a carbonization storehouse and an air heater, however when in actual use, still have following shortcoming:
1. in the technology, in use, the waste gas after the pre-oxidation treatment is directly discharged to the outside, so that pollution is easy to cause;
2. the technology does not realize better utilization of the waste heat of the heated and discharged gas, and when in actual use, the hot water directly exchanges heat with the outside to enable the temperature of the outside environment to become large, thereby influencing the processing environment.
3. The processing air inlet pipeline is exposed in the air, so that heat waste is easily caused, the heating and heat-insulating performance requirements on the carbonization bin are high, and the internal temperature is easily generated when the pre-oxidation process is carried out, so that the requirement that the pre-oxidation temperature cannot be reached, and the product quality is influenced
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides low-temperature pre-oxidation equipment for activated carbon fibers.
The utility model provides an active carbon fiber low temperature is oxygen equipment in advance, includes processing case and pre-oxidation case, the fixed bellows that is provided with of lateral wall of processing case, the air intake has been seted up to one side that processing case was kept away from to the bellows, the inside of bellows is provided with negative pressure impeller, negative pressure impeller's rotation center fixedly connected with pivot, the inside of pre-oxidation case is provided with the heating platform, be provided with waste heat insulation structure in the processing case, the pivot is connected with the transmission structure that makes the carbon fiber bundle processing, the inner wall of processing case is provided with elastic buffer layer, fill full insulation liquid in the processing case.
In the above-mentioned active carbon fiber low temperature is oxygen equipment in advance, waste heat insulation structure includes a plurality of connecting holes, and is a plurality of the connecting hole sets up in the bellows one side that is away from the air intake, every the connecting hole communicates fixedly respectively and is provided with a connecting pipe, and is a plurality of the other end of connecting pipe is connected with the collection tuber pipe jointly, the one end intercommunication that the connecting pipe was kept away from to the collection tuber pipe is provided with the oxygen case in advance, fixedly provided with heating table in the oxygen case in advance, the gas outlet has been seted up to the downside of oxygen case in advance, gas outlet sealed fixedly connected with solenoid valve.
In the above-mentioned activated carbon fiber low temperature is oxygen equipment in advance, a plurality of connecting hole annular array sets up on the bellows diapire of drum type to make a plurality of connecting pipe annular distribution is in the outside of drum type oxygen box in advance, a plurality of the connecting pipe is fixed to be provided with the cover case with the part between the oxygen box in advance, one side of cover case is fixed to be set up on the outer wall of bellows, the inner wall of cover case and the outer wall size cooperation and fixed connection of oxygen box in advance.
In the above-mentioned activated carbon fiber low temperature is oxygen equipment in advance, a plurality of connecting hole annular array sets up on the bellows diapire of drum type to make a plurality of connecting pipe annular distribution is in the outside of drum type oxygen box in advance, a plurality of the connecting pipe is fixed to be provided with the cover case with the part between the oxygen box in advance, one side of cover case is fixed to be set up on the outer wall of bellows, the inner wall of cover case and the outer wall size cooperation and fixed connection of oxygen box in advance.
In the low-temperature pre-oxidation equipment for the activated carbon fibers, the air outlet is formed between the pre-oxidation box and the inner wall of the processing box, which is close to one side of the air box, of the sleeve box, the air outlet is formed in the top of the sleeve box, the processing box is fixedly provided with an air outlet pipe outside the discharging pipe, the discharging pipe is wrapped inside the air outlet pipe and is coaxially arranged in the air outlet pipe, and an air permeable film is arranged at the joint of the air outlet pipe and the processing box in a sealing manner.
In the above-mentioned active carbon fiber low temperature is oxygen equipment in advance, the air intake sets up to annular structure, air intake sealed fixedly connected with prevents grey net, inlet pipe and discharging pipe all are provided with joint strip with the inner wall junction of processing case, the heating platform sets up in advance oxygen case one side of keeping away from negative pressure impeller and runs through and has seted up with collection tuber pipe matched with connector.
Compared with the prior art, the invention has the advantages that:
1: the invention can realize the improvement of the heat preservation effect in the pre-oxidation process by absorbing the residual heat of the processed gas by the heat preservation liquid in use, ensure the temperature condition in the pre-oxidation process, and reduce the consumption of heating energy source so as to realize the effect of energy conservation.
2: when the device is used, through the flow path planning of the gas, the device is enabled to conduct long-path contact with heat preservation liquid in a processing box in the process of discharging after processing, and the device has the advantages that the device can improve the heat exchange efficiency with the heat preservation liquid, realize the heat preservation effect, and can absorb impurities in discharged gas through the liquid, so that the discharged gas is purified, and pollution to the outside is avoided.
3: the equipment pipeline and the structure are integrated in the bellows and the processing box, so that the heat-insulating device has the advantages that the problem of heat leakage caused by the exposure of the pipeline in the prior art can be avoided, and meanwhile, the heat-insulating performance of the device can be improved.
Drawings
FIG. 1 is a schematic structural diagram of a low-temperature pre-oxidation device for activated carbon fibers according to the present invention;
FIG. 2 is a schematic structural view of a connecting pipe in an activated carbon fiber low-temperature pre-oxidation device according to the present invention;
FIG. 3 is an internal cross-sectional view of an activated carbon fiber low temperature pre-oxidation apparatus according to the present invention;
fig. 4 is a schematic structural diagram of a processing tank, a jacket tank and a pre-oxidation tank in the activated carbon fiber low-temperature pre-oxidation equipment provided by the invention.
In the figure: 1 processing box, 2 bellows, 3 air intakes, 4 negative pressure impellers, 5 pivots, 6 connecting holes, 7 connecting pipes, 8 air collecting pipes, 9 pre-oxygenation boxes, 10 air outlets, 11 electromagnetic valves, 12 boxes, 13 feeding pipes, 14 discharging pipes, 15 carbon fiber bundles, 16 air outlets, 17 air outlet pipes, 18 ash preventing nets and 19 heating tables.
Detailed Description
Referring to fig. 1-4, an activated carbon fiber low temperature pre-oxidation device comprises a processing box 1 and a pre-oxidation box 9, wherein a fixed table is arranged at the bottom of the processing box 1, which is not marked in the figure, so that when the device is used, the upper and lower positions in the device can be determined, the side wall of the processing box 1 is fixedly provided with a bellows 2, one side of the bellows 2 away from the processing box 1 is provided with an air inlet 3, the inside of the bellows 2 is provided with a negative pressure impeller 4, the rotation center of the negative pressure impeller 4 is fixedly connected with a rotating shaft 5, the inside of the pre-oxidation box 9 is provided with a heating table 19, the processing box 1 is provided with a waste heat insulation structure, the rotating shaft 5 is connected with a transmission structure for processing carbon fiber bundles, the inner wall of the processing box 1 is provided with an elastic buffer layer, the processing box 1 is filled with insulation liquid, the insulation liquid is limited in liquid, the insulation liquid is easy to obtain and has larger insulation performance, the liquid with high boiling point and low heat capacity can be referred to the requirements of the application, the condition that the gasification can be avoided under the condition that the self temperature is too high is easy to heat, the condition that the gasification can generate the inner pressure of the inner wall of the processing box 1, the buffer layer can be expanded when the buffer layer is arranged in the processing box 1, and the processing space can be expanded, and the processing requirement can be realized by expanding the inner space when the buffer layer is realized.
The waste heat insulation structure comprises a plurality of connecting holes 6, the connecting holes 6 are arranged on one side of the bellows 2 far away from the air inlet 3, each connecting hole 6 is respectively and fixedly provided with a connecting pipe 7, the other ends of the connecting pipes 7 are commonly connected with an air collecting pipe 8, one ends of the air collecting pipes 8 far away from the connecting pipes 7 are communicated and provided with a pre-oxidation box 9, the air collecting pipes 8 perform concentrated collection function on the air in the connecting pipes 7 and are discharged into the pre-oxidation box 9 together to react with carbon fiber bundles, heat exchange can be carried out between the air collecting pipes and the insulation liquid in the processing box 1 fully through the arrangement of the connecting pipes 7, so that the temperature of the air entering the air collecting pipes 8 is higher, the heating load of a heating table 19 is reduced, the pre-oxidation carbonization requirement of carbon fibers is met, a heating table 19 is fixedly arranged in the pre-oxidation box 9, the lower side of the pre-oxidation box 9 is provided with an air outlet 10, the air outlet 10 is fixedly connected with the electromagnetic valve 11 in a sealing way, the plurality of connecting holes 6 are arranged on the bottom wall of the cylindrical air box 2 in an annular array way, so that the plurality of connecting pipes 7 are annularly distributed on the outer side of the cylindrical pre-oxidation box 9, a sleeve 12 is fixedly arranged at the part between the plurality of connecting pipes 7 and the pre-oxidation box 9, one side of the sleeve 12 is fixedly arranged on the outer wall of the air box 2, the inner wall of the sleeve 12 is matched with the outer wall of the pre-oxidation box 9 in size and fixedly connected with the outer wall, the sleeve 12 can enable the pre-oxidation box 9 to be suspended and fixed in the processing box 1, meanwhile, the sleeve 12 and the inner space of the processing box 1 are mutually separated, so that in the process of purifying air through heat preservation liquid, the air is discharged to the inner side of the sleeve 12 through the air outlet 10, therefore, in use, most of the air is kept in the sleeve 12 before leaving the air outlet 16 of the sleeve 12, the impurities are separated from the rest of the processing box 1, so that the impurities can be conveniently removed and collected, and the pollution of the heat preservation liquid in the processing box 1 is avoided as much as possible.
The transmission structure comprises a feed pipe 13 arranged at the central axis of the bellows 2, the feed pipe 13 penetrates through the side wall of the bellows 2 and penetrates through the inner side of the rotating shaft 5 at the same time, one end of the feed pipe 13 positioned in the processing box 1 is communicated with the inside of the pre-oxidation box 9, one side of the pre-oxidation box 9 away from the feed pipe 13 is provided with a discharge pipe 14 coaxial with the feed pipe 13, the discharge pipe 14 penetrates through the inner wall of the air collecting pipe 8 and the other end penetrates through the outer side of the processing box 1, the inner sides of the feed pipe 13 and the discharge pipe 14 are jointly inserted with a carbon fiber bundle 15, thus the carbon fiber bundle 15 is convenient for feeding and discharging during processing, an air outlet 16 is formed between the pre-oxidation box 9 and the inner wall of the processing box 1 close to one side of the bellows 2, the air outlet 16 is positioned at the top of the sleeve 12, the processing box 1 is fixedly provided with an air outlet pipe 17 positioned at the outer side of the discharge pipe 14, the air outlet pipe 17 wraps the discharge pipe 14 inside and is coaxially arranged, the air outlet 16 is arranged at the outer side of the discharge pipe 14, so that the air discharged from the air outlet 16 can perform a heat preservation function on the carbon fiber bundles, the problem that the structure and performance of the carbon fiber bundles are changed due to large temperature change during discharge after processing is avoided, namely, the temperature of discharged processing air is in a stepped downward reduced state during the air outlet period, the discharged rated-temperature carbon fiber bundles 15 can be accurately obtained by changing the lengths of the air outlet pipe 17 and the discharge pipe 14 outside the processing box 1, and an air permeable film is hermetically arranged at the joint of the air outlet pipe 17 and the processing box 1, and has the function of preventing liquid discharge, so that the air permeable film only allowing the air discharge can control the air flow path, thereby obtaining the maximum-path heat exchange.
The air intake 3 sets up to annular structure, the ash prevention net 18 of air intake 3 sealed fixedly connected with, can place the problem that influences processingquality in advance the oxygen case 9 of inlet processing through the setting of ash prevention net 18, inlet pipe 13 and discharging pipe 14 all are provided with joint strip with the inner wall junction of processing case 1, guarantee like this that liquid can't permeate and influence processing in advance the oxygen case 9, heating table 19 sets up in advance oxygen case 9 keep away from negative pressure impeller 4 one side and run through offered with collection tuber pipe 8 matched with connector, like this in actual course of working, the motion course of carbon fiber bundle 15 is opposite with the flow course motion direction of process gas, thereby make above-mentioned process realize the multi-temperature section and preoxygen and handle.
When in use, the carbon fiber bundles 15 are conveyed into the pre-oxidation tank 9 through the feed pipe 13 for processing, in the processing process, external gas firstly enters the bellows 2 through the ash prevention net 18, so that the influence of solid impurities on the gas quality is avoided, then, the gas entering the bellows 2 enters the air collecting pipe 8 under the conveying of the plurality of connecting pipes 7, in the process, the heat exchange efficiency of the gas and the insulating liquid in the processing tank 1 is improved due to the fact that the contact area between the gas and the inner wall of the pipeline is enlarged by the plurality of pipelines, the initial temperature of the gas entering the air collecting pipe 8 is higher, when the gas enters the pre-oxidation tank 9 for processing, the heating range of the heating table 19 on the pre-oxidation tank 9 is lower, energy-saving work can be effectively performed, and in the gas discharging process after the processing is finished, the discharged gas is discharged to the inner side of the sleeve tank 9 through the gas outlet 10, the air outlet 16 arranged at the top of the sleeve box 9 is discharged into the processing box 1, most of impurities carried by the air outlet 16 in the process are left on the inner side of the sleeve box 9, so that heat preservation liquid in the processing box 1 is polluted as little as possible, solid impurities are conveniently collected, air is finally discharged through the air outlet pipe 17, in the process, the discharged air fully contacts with the heat preservation liquid, the self energy is transferred to the heat preservation liquid, the self temperature is reduced, in the actual processing, the continuous heating of the heat preservation liquid can be realized, the heat outflow of the pre-oxidation box 9 is avoided, the influence on the external environment is reduced after the self temperature is reduced, and most of all, the waste impurities generated after the processing are absorbed by the heat preservation liquid in the flowing contact process of the liquid, so that the pollutant discharge to the air is reduced, the quality of the external environment is ensured.
Claims (2)
1. The utility model provides an active carbon fiber low temperature pre-oxidation equipment, includes processing case (1) and pre-oxidation case (9), its characterized in that, the lateral wall of processing case (1) is fixed to be provided with bellows (2), air intake (3) have been seted up to one side that processing case (1) were kept away from to bellows (2), the inside of bellows (2) is provided with negative pressure impeller (4), the rotation center fixedly connected with pivot (5) of negative pressure impeller (4), the inside of pre-oxidation case (9) is provided with heating platform (19), be provided with waste heat insulation structure in processing case (1), pivot (5) are connected with the transmission structure that makes carbon fiber bundle processing, the inner wall of processing case (1) is provided with elastic buffer layer, fill in processing case (1) heat preservation liquid;
the waste heat insulation structure comprises a plurality of connecting holes (6), wherein the connecting holes (6) are formed in one side, far away from an air inlet (3), of an air box (2), each connecting hole (6) is fixedly provided with a connecting pipe (7) in a communicating mode, the other ends of the connecting pipes (7) are jointly connected with an air collecting pipe (8), one ends, far away from the connecting pipes (7), of the air collecting pipes (8) are communicated with a pre-oxidation box (9), a heating table (19) is fixedly arranged in the pre-oxidation box (9), an air outlet (10) is formed in the lower side of the pre-oxidation box (9), and an electromagnetic valve (11) is fixedly connected to the air outlet (10) in a sealing mode;
the connecting holes (6) are annularly arranged on the bottom wall of the cylindrical bellows (2), so that the connecting pipes (7) are annularly distributed on the outer side of the cylindrical pre-oxidation box (9), a sleeve box (12) is fixedly arranged at the part between the connecting pipes (7) and the pre-oxidation box (9), one side of the sleeve box (12) is fixedly arranged on the outer wall of the bellows (2), and the inner wall of the sleeve box (12) is matched with the outer wall of the pre-oxidation box (9) in size and fixedly connected;
the transmission structure comprises a feeding pipe (13) arranged at the central axis of the bellows (2), the feeding pipe (13) penetrates through the side wall of the bellows (2) and penetrates through the inner side of the rotating shaft (5) at the same time, one end of the feeding pipe (13) positioned in the processing box (1) is communicated with the inside of the pre-oxidation box (9), one side, far away from the feeding pipe (13), of the pre-oxidation box (9) is provided with a discharging pipe (14) coaxial with the feeding pipe (13), the discharging pipe (14) penetrates through the inner wall of the air collecting pipe (8) and the other end penetrates through the outer side of the processing box (1), and carbon fiber bundles (15) are jointly inserted into the inner sides of the feeding pipe (13) and the discharging pipe (14);
the utility model discloses a processing case, including processing case (1), air outlet (16), air inlet (16), air outlet (17) are set up between processing case (1) inner wall that cover case (12) are located oxygen case (9) in advance and are close to bellows (2) one side, air outlet (16) are located the top of cover case (12), processing case (1) are located the outside of discharging pipe (14) and fixedly are provided with air-out pipe (17), air-out pipe (17) wrap up discharging pipe (14) in its inside and both coaxial settings, the junction of air-out pipe (17) and processing case (1) is sealed to be provided with the ventilated membrane.
2. The activated carbon fiber low-temperature pre-oxidation device according to claim 1, wherein the air inlet (3) is of an annular structure, the ash prevention net (18) is fixedly connected to the air inlet (3) in a sealing mode, sealing rubber strips are arranged at the connection positions of the feeding pipe (13) and the discharging pipe (14) and the inner wall of the processing box (1), and the heating table (19) is arranged on one side, far away from the negative pressure impeller (4), of the pre-oxidation box (9) and penetrates through the side, where the heating table is provided with a connection port matched with the air collecting pipe (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210418949.8A CN114717689B (en) | 2022-04-20 | 2022-04-20 | Low-temperature pre-oxidation equipment for activated carbon fibers |
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| CN202210418949.8A CN114717689B (en) | 2022-04-20 | 2022-04-20 | Low-temperature pre-oxidation equipment for activated carbon fibers |
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| CN114717689B true CN114717689B (en) | 2023-06-02 |
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| CN210856430U (en) * | 2018-12-26 | 2020-06-26 | 安徽欣冉碳纤维环保科技有限公司 | Multi-temperature-section carbon fiber low-temperature pre-oxidation kiln furnace |
| CN215887336U (en) * | 2021-05-27 | 2022-02-22 | 盐城市翔盛碳纤维科技有限公司 | Multi-temperature-section carbon fiber low-temperature pre-oxidation kiln furnace |
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| FR2842192B1 (en) * | 2002-07-12 | 2004-10-01 | Snecma Propulsion Solide | PROCESS AND PLANT FOR OBTAINING CARBON PRODUCTS FROM CARBON PRECURSOR PRODUCTS |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001098428A (en) * | 1999-09-30 | 2001-04-10 | Mitsubishi Rayon Co Ltd | Sealing apparatus for carbonization furnace for producing carbon fiber and method for producing carbon fiber |
| CN201024244Y (en) * | 2007-04-12 | 2008-02-20 | 济南发尔博科技有限公司 | High temperature furnace for carbon fiber production |
| CN201047003Y (en) * | 2007-05-31 | 2008-04-16 | 肖颖 | Heating gas cycle using high-effective energy-saving device for producing carbon-fiber |
| JP2012188771A (en) * | 2011-03-09 | 2012-10-04 | Mitsubishi Rayon Co Ltd | Sealing device for carbonization furnace used for producing carbon fiber |
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| CN114717689A (en) | 2022-07-08 |
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