CN114717689A - Activated carbon fiber low-temperature pre-oxidation equipment - Google Patents
Activated carbon fiber low-temperature pre-oxidation equipment Download PDFInfo
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- CN114717689A CN114717689A CN202210418949.8A CN202210418949A CN114717689A CN 114717689 A CN114717689 A CN 114717689A CN 202210418949 A CN202210418949 A CN 202210418949A CN 114717689 A CN114717689 A CN 114717689A
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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)
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Abstract
The invention discloses an active carbon fiber low-temperature pre-oxidation device 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, away from the processing box, of the air box, a negative pressure impeller is arranged inside the air box, a rotating shaft is fixedly connected to the rotating center of the negative pressure impeller, a heating table is arranged inside 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, heat insulation liquid is filled in the processing box, the waste heat insulation structure comprises a plurality of connecting holes, the connecting holes are formed in one side, away from the air inlet, of the air box, and the connecting holes are fixedly communicated with connecting pipes. Has the advantages that: the heat preservation effect in the pre-oxidation process is improved, the temperature condition in the pre-oxidation processing process is ensured, and on the other hand, the consumption of heating energy is reduced, 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 low-temperature pre-oxidation is needed in the carbon fiber manufacturing process, the low-temperature pre-oxidation needs extremely high temperature, and a plurality of greenhouses with gradually increasing temperature are needed, and the existing high-temperature carbonization device is poor in heat preservation effect and serious in energy consumption.
Through the search, chinese granted patent publication No. CN109652870B discloses an active carbon fiber low-temperature pre-oxidation device, which belongs to the technical field of carbon fiber manufacturing, and comprises a carbonization chamber, a carbon fiber bundle and a gas transport pipeline, wherein the gas transport pipeline comprises a gas transport pipe and a waste gas transport pipe, the two sides of the carbonization chamber are respectively connected with the gas transport pipe and the waste gas transport pipe, one side of the gas transport pipeline close to the gas transport pipe is provided with an air heater, the waste gas transport pipe passes through the gas transport pipe, and through analysis, although the prior art can make the motion direction of the carbon fiber bundle opposite to the flow direction of air in the carbonization chamber, the multi-temperature pre-oxidation treatment is realized under the condition of arranging one carbonization chamber and one air heater, however, during actual use, the following disadvantages are also present:
1. when the technology is used, the waste gas after pre-oxidation is directly discharged to the outside, so that pollution is easily caused;
2. this technique does not realize better utilization to the gaseous waste heat of being heated the combustion gas, and when in actual use, hot water directly can make external environment temperature grow with external exchange heat to influence the processing environment.
3. The processed air inlet pipeline is exposed in the air, so that the heat waste is easily caused, the requirement on the heating and heat-insulating performance of the carbonization bin is higher, the requirement that the internal temperature cannot reach the pre-oxidation temperature is easily generated during the pre-oxidation process, 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 pre-oxidation equipment, 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 bellows, the inside of bellows is provided with negative pressure impeller, negative pressure impeller's centre of rotation fixedly connected with pivot, the inside of pre-oxidation case is provided with the warm table, be provided with waste heat insulation structure in the processing case, the pivot is connected with the transmission structure who makes carbon fiber bundle processing, the inner wall of processing case is provided with elastic buffer layer, fill full heat preservation liquid in the processing case.
In foretell activated carbon fiber low temperature pre-oxidation equipment, waste heat insulation construction includes a plurality of connecting holes, and is a plurality of the connecting hole sets up the one side of keeping away from the air intake at bellows, every the connecting hole communicates fixed a connecting pipe that is provided with respectively, 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 pre-oxidation case, the fixed warm table that is provided with in the pre-oxidation case, the gas outlet has been seted up to the downside of pre-oxidation case, the sealed fixedly connected with solenoid valve of gas outlet.
In foretell an active carbon fiber low temperature pre-oxygen equipment, it is a plurality of connecting hole annular array sets up on the bellows diapire of drum type to make a plurality of the connecting pipe annular distribution is in the outside of the pre-oxygen case of drum type, and is a plurality of the part between connecting pipe and the pre-oxygen case is fixed and is provided with the pouring jacket, the fixed setting on the outer wall of bellows in one side of pouring jacket, the inner wall of pouring jacket matches with the outer wall size of pre-oxygen case and merges fixed connection.
In foretell an active carbon fiber low temperature pre-oxygen equipment, it is a plurality of connecting hole annular array sets up on the bellows diapire of drum type to make a plurality of the connecting pipe annular distribution is in the outside of the pre-oxygen case of drum type, and is a plurality of the part between connecting pipe and the pre-oxygen case is fixed and is provided with the pouring jacket, the fixed setting on the outer wall of bellows in one side of pouring jacket, the inner wall of pouring jacket matches with the outer wall size of pre-oxygen case and merges fixed connection.
In foretell activated carbon fiber low temperature pre-oxidation equipment, the air outlet has been seted up to the pouring jacket position in the pre-oxidation case and between the processing incasement wall that is close to bellows one side, the air outlet is located the top of pouring jacket, the processing case is located the fixed tuber pipe that is provided with in the outside of discharging pipe, go out the tuber pipe with discharging pipe parcel in its inside and coaxial setting between them, it is provided with the ventilated membrane to go out the sealed junction of tuber pipe and processing case.
In foretell activated carbon fiber low temperature preoxygenation equipment, the air intake sets up to the loop configuration, the sealed fixedly connected with of air intake prevents the ash screen, the inner wall junction of inlet pipe and discharging pipe and processing case all is provided with joint strip, the warm-up table setting is in the one side of preoxygenation case keeping away from the negative pressure impeller and run through and set up with collection tuber pipe matched with connector.
Compared with the prior art, the invention has the advantages that:
1: when the invention is used, the heat preservation effect in the pre-oxidation process can be improved and the temperature condition in the pre-oxidation processing process can be ensured on one hand, and the consumption of heating energy can be reduced on the other hand by absorbing the waste heat of the processed gas by the heat preservation liquid, thereby realizing the effect of energy saving.
2: when using, through the route planning of flowing through to gaseous, make its discharge process after processing, carry out the contact of long route with the heat preservation liquid in the processing case, such benefit lies in, both can improve the heat exchange efficiency with heat preservation liquid, realizes the heat preservation effect, can pass through the absorption of liquid to the internal impurity of combustion gas again for the combustion gas is purified, has avoided causing the pollution to the external world like this.
3: this equipment pipeline and structure all integrate in bellows and processing incasement, and such benefit lies in, can avoid among the prior art pipeline to expose the problem that causes the heat to leak, can improve the thermal insulation performance of device simultaneously.
Drawings
FIG. 1 is a schematic structural diagram of an activated carbon fiber low-temperature pre-oxygenation device provided by the invention;
FIG. 2 is a schematic structural diagram of a connecting pipe in the activated carbon fiber low-temperature pre-oxygenation device provided by the invention;
FIG. 3 is an internal cross-sectional view of an activated carbon fiber low-temperature pre-oxygenation device according to the present invention;
FIG. 4 is a schematic structural diagram of a processing box, a jacket box and a pre-oxidation box in the low-temperature pre-oxidation equipment for activated carbon fibers.
In the figure: 1 processing box, 2 air boxes, 3 air inlets, 4 negative pressure impellers, 5 rotating shafts, 6 connecting holes, 7 connecting pipes, 8 air collecting pipes, 9 pre-oxidation boxes, 10 air outlets, 11 electromagnetic valves, 12 suitcases, 13 feeding pipes, 14 discharging pipes, 15 carbon fiber bundles, 16 air outlets, 17 air outlet pipes, 18 ash prevention 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 platform is arranged at the bottom of the processing box 1, which is not shown in the figures, so that the upper and lower positions in the device can be determined when the device is used, an air box 2 is fixedly arranged on the side wall of the processing box 1, an air inlet 3 is arranged at one side of the air box 2 away from the processing box 1, a negative pressure impeller 4 is arranged inside the air box 2, a rotating shaft 5 is fixedly connected with the rotating center of the negative pressure impeller 4, a heating platform 19 is arranged inside the pre-oxidation box 9, a waste heat insulation structure is arranged in the processing box 1, the rotating shaft 5 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 1, heat insulation liquid is filled in the processing box 1, the heat insulation liquid is limited and is liquid water, which is easy to obtain and has larger heat insulation performance, and high boiling point and can be selected according to the requirements of the application, The liquid of low thermal capacity when easily heating, thereby can avoid taking place gasification under its self high temperature condition and produce the great internal pressure to processing case 1 inner wall, and the advantage of the setting of buffer layer lies in, when discharging into gas in processing case 1, can realize expanding processing case 1 inner space through the compression to the buffer layer to satisfy the requirement that gas removed.
The waste heat insulation structure comprises a plurality of connecting holes 6, the connecting holes 6 are arranged on one side of the air box 2 far away from the air inlet 3, each connecting hole 6 is respectively communicated 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 end of the air collecting pipe 8 far away from the connecting pipes 7 is communicated with a pre-oxidation box 9, the air collecting pipe 8 is used for carrying out concentrated collection on gas in the connecting pipes 7 and discharging the gas into the pre-oxidation box 9 to react with carbon fiber bundles, heat exchange can be fully carried out between the gas and insulation liquid in the processing box 1 through the arrangement of the connecting pipes 7, so that the temperature of the gas entering the air collecting pipe 8 is higher, the heating load of a heating table 19 is reduced, the pre-oxidation carbonization requirement of the carbon fibers is met, the heating table 19 is fixedly arranged in the pre-oxidation box 9, and an air outlet 10 is arranged on the lower side of the pre-oxidation box 9, the air outlet 10 is fixedly connected with an electromagnetic valve 11 in a sealing way, the connecting holes 6 are arranged on the bottom wall of the cylindrical air box 2 in an annular array way, so that the connecting pipes 7 are distributed on the outer side of the cylindrical pre-oxidation box 9 in an annular way, a sleeve 12 is fixedly arranged between the 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 size of the outer wall of the pre-oxidation box 9 and is fixedly connected with the outer wall of the pre-oxidation box 9, the sleeve 12 can be arranged to enable the pre-oxidation box 9 to be suspended and fixed in the processing box 1, and the sleeve 12 is separated from the space in the processing box 1, so that in the process of gas purification through heat preservation liquid, gas is discharged to the inner side of the sleeve 12 through the air outlet 10, therefore, most of the gas is left in the sleeve 12 before being separated from the air outlet 16 of the sleeve 12, the impurities are separated from the rest spaces of the processing box 1, so that the impurities can be conveniently removed and collected, and the heat preservation liquid in the processing box 1 is prevented from being polluted as much as possible.
The transmission structure comprises a feeding pipe 13 arranged at the central axis of the air box 2, the feeding pipe 13 penetrates through the side wall of the air box 2 and simultaneously penetrates through the inner side of the rotating shaft 5, one end of the feeding pipe 13, which is positioned in the processing box 1, is communicated with the inside of the pre-oxidation box 9, one side, which is far away from the feeding pipe 13, of the pre-oxidation box 9 is provided with a discharging pipe 14 which is 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 of the discharging pipe penetrates through the outer side of the processing box 1, carbon fiber bundles 15 are jointly inserted into the inner sides of the feeding pipe 13 and the discharging pipe 14, so that the carbon fiber bundles 15 can conveniently carry out feeding and discharging processes when processing, an air outlet 16 is formed between the inner wall of the processing box 12, which is positioned on one side, which is close to the air box 2, and the air outlet 16 is positioned at the top of the sleeve 12, an air outlet pipe 17 is fixedly arranged on the outer side, the processing box 1, the air outlet pipe 17 wraps the discharging pipe 14 inside of the processing box and is coaxially arranged with the air outlet pipe 17, the air outlet 16 is arranged at the outer part of the discharge pipe 14, which has the advantages that the discharged gas at the air outlet 16 can perform a heat preservation function on the carbon fiber bundle, thereby avoiding the problem that the structure and the performance of the carbon fiber bundle change due to large temperature change when the carbon fiber bundle is discharged after being processed, namely, at the stage of air outlet, the temperature of the discharged processing gas is in a step-type downward reduction state, the carbon fiber bundle 15 at the rated temperature after being discharged can be accurately obtained by changing the lengths of the air outlet pipe 17 and the discharge pipe 14 outside the processing box 1, a breathable film is arranged at the joint of the air outlet pipe 17 and the processing box 1 in a sealing manner, the breathable film has the function of preventing liquid discharge, so that only the breathable film for gas discharge can control the gas flow path, and the maximum heat exchange of the path is obtained.
When in use, the carbon fiber bundle 15 is conveyed into the pre-oxidation box 9 through the feeding pipe 13 for processing, in the processing process, the outside air firstly enters the air box 2 through the anti-dust net 18, thus avoiding the influence of solid impurities on the air quality, then the air entering the air box 2 enters the air collecting pipe 8 under the transportation of the connecting pipes 7, in the process, the contact area between the air and the inner wall of the pipeline is enlarged due to a plurality of pipelines, thus realizing the improvement of the heat exchange efficiency of the air and the heat preservation liquid in the processing box 1, leading the initial temperature to be higher when the air enters the air collecting pipe 8, leading the heating range of the heating table 19 to the pre-oxidation box 9 to be lower when the air enters the pre-oxidation box 9 for processing, effectively carrying out energy-saving work, and in the air discharging process after the processing, the discharged air is discharged to the inner side of the jacket box 9 through the air outlet 10, and is discharged into the processing box 1 through an air outlet 16 arranged at the top of the sleeve box 9, most of impurities carried by the processing box are left at the inner side of the sleeve box 9 in the process, so that the heat preservation liquid in the processing box 1 is polluted as little as possible, the collection of solid impurities is convenient, the gas is finally discharged through the air outlet pipe 17, in the process, the exhausted gas fully contacts with the heat preservation liquid, the self energy is transferred to the heat preservation liquid, simultaneously the self temperature is also reduced, therefore, during the actual processing, the heat preservation liquid can be continuously heated to avoid the heat outflow in the pre-oxidation box 9, and can be discharged after the temperature of the pre-oxidation box is reduced to reduce the influence on the external environment, and most importantly, in the flowing contact process with liquid, waste impurities generated after processing can be absorbed by the heat preservation liquid, so that the pollutant emission to air is reduced, and the quality of the external environment is ensured.
Claims (6)
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 fixed bellows (2) that is provided with of lateral wall of processing case (1), air intake (3) have been seted up to one side of processing case (1) is kept away from in bellows (2), the inside of bellows (2) is provided with negative pressure impeller (4), the centre of turning circle fixedly connected with pivot (5) of negative pressure impeller (4), the inside of pre-oxidation case (9) is provided with warm table (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, it is full of heat preservation liquid to fill in processing case (1).
2. The activated carbon fiber low-temperature pre-oxidation device according to claim 1, wherein the waste heat insulation structure comprises a plurality of connecting holes (6), the connecting holes (6) are arranged on one side, away from the air inlet (3), of the air box (2), each connecting hole (6) is fixedly communicated with one connecting pipe (7), the other ends of the connecting pipes (7) are commonly connected with an air collecting pipe (8), one end, away from the connecting pipes (7), of the air collecting pipe (8) is 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 the air outlet (10) is fixedly connected with the electromagnetic valve (11) in a sealing manner.
3. The activated carbon fiber low-temperature pre-oxidation device as claimed in claim 2, wherein a plurality of connecting holes (6) are annularly arrayed on the bottom wall of the cylindrical air box (2), so that a plurality of 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 a part between the plurality of 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 air box (2), and the inner wall of the sleeve box (12) is matched with the size of the outer wall of the pre-oxidation box (9) and is fixedly connected with the outer wall.
4. The activated carbon fiber low-temperature pre-oxidation device according to claim 3, wherein the transmission structure comprises a feeding pipe (13) arranged at the central axis of the air box (2), the feeding pipe (13) penetrates through the side wall of the air box (2) and simultaneously penetrates through the inner side of the rotating shaft (5), one end of the feeding pipe (13) in the processing box (1) is communicated with the inside of the pre-oxidation box (9), a discharging pipe (14) coaxial with the feeding pipe (13) is arranged on one side, away from the feeding pipe (13), of the pre-oxidation box (9), the discharging pipe (14) penetrates through the inner wall of the air collecting pipe (8) and the other end of the inner wall 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).
5. The activated carbon fiber low-temperature pre-oxidation device according to claim 4, wherein an air outlet (16) is formed in the jacket (12) between the pre-oxidation box (9) and the inner wall of the processing box (1) close to one side of the air box (2), the air outlet (16) is located at the top of the jacket (12), an air outlet pipe (17) is fixedly arranged on the outer side of the discharging pipe (14) of the processing box (1), the discharging pipe (14) is wrapped in the air outlet pipe (17) and is coaxially arranged with the air outlet pipe, and a breathable film is hermetically arranged at the joint of the air outlet pipe (17) and the processing box (1).
6. The activated carbon fiber low-temperature pre-oxidation device according to claim 5, wherein the air inlet (3) is arranged in an annular structure, the air inlet (3) is fixedly connected with an ash prevention net (18) in a sealing manner, sealing rubber strips are arranged at the joints of the inlet pipe (13) and the outlet pipe (14) and the inner wall of the processing box (1), and the heating table (19) is arranged on one side of the pre-oxidation box (9) far away from the negative pressure impeller (4) and is provided with a connecting port matched with the air collecting pipe (8) in a penetrating manner.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210418949.8A CN114717689B (en) | 2022-04-20 | 2022-04-20 | Low-temperature pre-oxidation equipment for activated carbon fibers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210418949.8A CN114717689B (en) | 2022-04-20 | 2022-04-20 | Low-temperature pre-oxidation equipment for activated carbon fibers |
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| CN114717689A true CN114717689A (en) | 2022-07-08 |
| CN114717689B CN114717689B (en) | 2023-06-02 |
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| 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 |
| US20040008750A1 (en) * | 2002-07-12 | 2004-01-15 | Jean-Etienne Loncle | Method and an installation for obtaining carbon bodies from carbon-precursor bodies |
| 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 |
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| JP2012188771A (en) * | 2011-03-09 | 2012-10-04 | Mitsubishi Rayon Co Ltd | Sealing device for carbonization furnace used for producing carbon fiber |
| CN205133822U (en) * | 2015-11-12 | 2016-04-06 | 荣成复合材料有限公司 | High -temperature carbonizing furnace for carbon fiber production |
| CN109652870A (en) * | 2018-12-28 | 2019-04-19 | 安徽天富环保科技材料有限公司 | A kind of pre- oxygen equipment of activated carbon fibre low temperature |
| 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 |
-
2022
- 2022-04-20 CN CN202210418949.8A patent/CN114717689B/en active Active
Patent Citations (9)
| 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 |
| US20040008750A1 (en) * | 2002-07-12 | 2004-01-15 | Jean-Etienne Loncle | Method and an installation for obtaining carbon bodies from carbon-precursor bodies |
| 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 |
| CN205133822U (en) * | 2015-11-12 | 2016-04-06 | 荣成复合材料有限公司 | High -temperature carbonizing furnace for carbon fiber production |
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| CN109652870A (en) * | 2018-12-28 | 2019-04-19 | 安徽天富环保科技材料有限公司 | A kind of pre- oxygen equipment of activated carbon fibre low temperature |
| 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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| CN114717689B (en) | 2023-06-02 |
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