CN202936527U - Pitch-based carbon fiber continuous non-melting device - Google Patents
Pitch-based carbon fiber continuous non-melting device Download PDFInfo
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- CN202936527U CN202936527U CN 201220617196 CN201220617196U CN202936527U CN 202936527 U CN202936527 U CN 202936527U CN 201220617196 CN201220617196 CN 201220617196 CN 201220617196 U CN201220617196 U CN 201220617196U CN 202936527 U CN202936527 U CN 202936527U
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Abstract
The utility model discloses a carbon fiber production device, in particular to a pitch-based carbon fiber continuous non-melting device. A furnace body is of a multi-layer structure, and a conveyor belt is arranged at each layer. The non-melting device is characterized in that the conveyor belts are of mesh belt structures; tar/broken filament removing equipment is arranged under the mesh belts; overturn linking equipment is arranged between layers; the layers are mutually separated; airflow distribution devices are arranged on each layer and on two sides of the furnace body; side air blow or vertical air blow or horizontal air blow is adopted for heated air circulating and heating; a main pipeline is replenished with a certain amount of fresh air, and exhaust gas with corresponding amount is exhausted; micro positive pressure is maintained in the furnace body; a filter unit is arranged in front of an exhaust port; and a nitrogen inlet is arranged on a pipeline. The pitch-based carbon fiber continuous non-melting device can meet non-melting requirements of pitch-based fiber short filament, fixed-length filament and felts; temperature uniformity inside the furnace body is realized by adopting different hot air blowing manners; the pitch-based fiber is heated uniformly; the non-melting reaction is uniform; and waste gas and heat released during the non-melting reaction can be brought away timely.
Description
Technical field
The utility model relates to a kind of process units of carbon fiber, specifically a kind of asphalt-based carbon fiber melting appartus not continuously.
Background technology
Asphalt base carbon fiber beginning of the sixties is succeeded in developing by Japan group horse university, and realize suitability for industrialized production in Japanese Wu Yu chemical company the end of the sixties.
The research and development of China's asphalt-based carbon fiber early but has larger gap in exploitation, production and application facet with comparing abroad.Phase late 1970s, Shanxi Inst. of Coal Chemistry, Chinese Academy of Sciences's asphalt-based carbon fiber that begins one's study, and in 1985 by lab scale, after this passed through again a series of research, all obtained satisfied result.But be used for the never exploitation of Special industrial gasifying device of asphalt-based carbon fiber.
Asphalt-based carbon fiber need first not melt crosslinking Treatment before carbonization, not melting purpose is the crosslinked action that utilizes oxidation, and asphaltene molecule is cross-linked with each other, and formed the molten large molecule that does not melt, and it is not melted under carbonization high temperature do not melt, keep fiber condition.To be pitch fibers do not make a kind of production equipment of fusion-free fibre to melting unit after high-temperature oxydation in medium is the stove of air.
The pitch precursor is not experiencing complicated chemical reaction in fusion process.Not melting reaction is mainly that oxidative dehydrogenation and aromatics interplanar are crosslinked by oxo bridge, form the space net polymer of infusibility, finally form the high oxo bridge structure of heat endurance, be accompanied by the carrying out of chemical reaction in process, fiber discharges a large amount of reaction heat, and fiber also produces certain contraction.
In number of patent application 200720156914.2 perpendicular wind path type carbon fibre oxidation ovens, provide that a kind of upper and lower faces of carbon fiber wire is provided with intensive and vertical hot blast gas hole and steam vent and oxidation furnace, this equipment only is confined to continuous filament yarn, inapplicable for goods such as the larger pitch long filament of fragility, chopped/fixed length silk, felts, easily cause fracture of wire, the length of this equipment is subjected to certain restriction simultaneously.
Number of patent application 200820019245.9 pre-oxidation furnaces, number of patent application 95226608.3 external heating type furnace for preliminaries, number of patent application 201020672103.X pre-oxidation furnace of producing carbon fiber, above-mentioned three kinds of pre-oxidation furnaces are that the polyacrylonitrile long filament is suitable for, for silk in asphalt-based carbon fiber production do not melt and inapplicable.
Summary of the invention
The purpose of this utility model is to provide a kind of asphalt-based carbon fiber melting appartus not continuously.What it can satisfy the various forms such as the chopped silk of pitch fibers, fixed length silk, felt does not melt requirement.
the utility model body of heater is many warm areas, the multiple field furnace binding, every layer has conveyer belt, conveyer belt is mesh belt structure, the guipure below is provided with tar removing, lousiness equipment, be provided with between layers upset linking equipment, the loading plate angle of upset linking equipment and the distance between loading plate and guipure all can be regulated, thereby guarantee that fibrofelt (or silk) can enter into smoothly lower one deck and do not drawn broken or break, be spaced from each other between layers, every one deck all is provided with airflow distribution device in body of heater both sides, airflow distribution device is provided with independently heated air circulation device and hot air heating apparatus and temperature control point and temperature monitoring point, temperature monitoring point is in the body of heater side, temperature control point is arranged on the back of hot air heating apparatus, be convenient to the timely adjusting of heating power, prevent that the power adjusting hysteresis from causing overtemperature, adopt lateral blowing or top and bottom blowing or parallel blowing mode to carry out Cycling hot-blast heating, the main pipe rail of airflow distribution device is provided with the air intlet that replenishes fresh wind, replenish a certain amount of fresh wind, and be provided with the exhaust outlet of the waste gas of eliminating, and the waste gas of eliminating respective amount, keep pressure-fired in stove, be provided with the filter that filters out lousiness in waste gas before exhaust outlet, pipeline is provided with nitrogen inlet.
The body of heater number of plies can be the 3-9 layer, and every layer of length is 10-100 rice.
The temperature monitoring point that the body of heater side is provided with, monitoring point spacing 0.5-5m, each monitoring point has system's thermometric and overheated or burning warning function concurrently.
Be provided with the nitrogen extinguishing device, extinguishing device is the large calorimetric of not emitting in fusion process for the pitch fibers precursor, causes catching fire at the localized production heat accumulation when upset operation and sets up; The temperature detection of fire extinguishing system is that the temperature monitoring point has overtemperature alarm function concurrently by the temperature monitoring point of body of heater side, and during overtemperature alarm, system automatically passes into nitrogen and carries out cooling.
Not melting body of heater is incubated between layers, temperature is arranged to high temperature by low temperature, not melting the final temperature temperature is 325-350 ℃, high temperature section has to the low temperature dewatering section: with a certain amount of fresh wind of waste gas proportioning of high temperature section discharge, the gas that makes temperature reach low temperature dewatering section temperature is incorporated into the plumbing installation of low temperature dewatering section, realizes taking full advantage of of heat.
The running of device is as follows:
Pitch fibers felt/chopped silk/fixed length silk enters by mesh-belt conveying and does not melt furnace chamber, at first passes through the low temperature dewatering section, removes the water that adsorbs on fiber, then enters and does not melt conversion zone.
The utility model has the following advantages compared with prior art:
The utility model is mainly for the extremely crisp characteristic of pitch fibers, that satisfies simultaneously the various forms such as the chopped silk of pitch fibers, fixed length silk, felt does not melt requirement, realize that by different hot blasting modes the furnace chamber internal temperature is even, pitch fibers is heated evenly, do not melt reaction evenly, and can in time take away and do not melt waste gas and the heat that reaction is emitted.Have advantages of that oxidized pitch fibers is heated evenly, continued operation is strong, energy-efficient.
Description of drawings
Fig. 1 is schematic diagram of the present utility model,
Fig. 2 is circulated air layout of the present utility model.
In figure: 1. upset linking equipment, 2. tar removing, lousiness equipment, 3. heated air circulation device, 4. hot air heating apparatus, 5. temperature control point, 6. the temperature monitoring point, 7. do not melt furnace chamber, 8. filter, 9. exhaust outlet, 10. fresh air inlet, 11. nitrogen inlet.
The specific embodiment
Further illustrate the utility model below in conjunction with accompanying drawing.
The utility model body of heater is many warm areas, multiple field furnace binding, and the number of plies is designed to 5 layers, and every layer of length is 80 meters, every layer has conveyer belt, conveyer belt is mesh belt structure, is provided with tar removing, lousiness equipment 2 below guipure, prevents that lousiness from flying, preventing the tar pollution fibre in the furnace chamber civil strike; Be provided with between layers upset linking equipment 1, the loading plate angle of upset linking equipment and the distance between loading plate and guipure all can be regulated, thereby guarantee that fibrofelt/silk can enter into smoothly lower one deck and do not drawn broken or break, guarantee that the pitch fibers goods do not rupture, the pitch fibers goods are turned to lower one deck, upper surface and lower surface are turned, and can make fiber oxidation even, more are conducive to take away simultaneously reactor off-gas and reaction heat; Be spaced from each other between layers, every one deck does not melt furnace chamber 7 both sides and is provided with airflow distribution device, airflow distribution device has independently heated air circulation device 3, hot air heating apparatus 4 and temperature control point 5 and temperature monitoring point 6, temperature monitoring point 6 is not melting furnace chamber 7 sides, temperature control point 5 is arranged on the back of hot air heating apparatus 4, be convenient to the timely adjusting of heating power, prevent that the power adjusting hysteresis from causing overtemperature; Adopt lateral blowing or top and bottom blowing or parallel blowing, three kinds of air intake modes are selected a kind of Cycling hot-blast heating that carries out, and airflow distribution device is provided with the air intlet 10 that replenishes fresh wind and replenishes a certain amount of fresh wind, and the magnitude of recruitment of fresh wind is 150m
3/ h, and be provided with the exhaust outlet 9 of the waste gas of eliminating, and get rid of the waste gas of respective amount, keep pressure-fired in stove, be provided with filter 8 before exhaust outlet 9, filter out the lousiness in waste gas, pipeline is provided with nitrogen inlet 11.
The spacing of temperature monitoring point 6 is 0.5-5m, and each temperature monitoring point 6 has system's thermometric and overheated/burning warning function concurrently.
Be provided with the nitrogen extinguishing device, extinguishing device is the large calorimetric of not emitting in fusion process for the pitch fibers precursor, cause catching fire at the localized production heat accumulation when upset operation and set up, the temperature detection of fire extinguishing system is temperature monitoring point 6 monitorings that are provided with by the body of heater side, the temperature monitoring point has overtemperature alarm function concurrently, and during overtemperature alarm, system automatically passes into nitrogen from nitrogen inlet 11 and carries out cooling.
Not melting body of heater is incubated between layers, temperature is arranged to high temperature by low temperature, not melting the final temperature temperature is 325-350 ℃, a certain amount of fresh wind of waste gas proportioning that high temperature section is discharged, make temperature reach low temperature dewatering section temperature, this gas is incorporated into the low temperature dewatering section, realizes taking full advantage of of heat.
The running of device is as follows:
Pitch fibers felt or chopped silk or fixed length silk enter by mesh-belt conveying and do not melt furnace chamber, at first pass through the low temperature dewatering section, remove the water that adsorbs on fiber, then enter and do not melt conversion zone.
Claims (5)
1. asphalt-based carbon fiber melting appartus not continuously, body of heater is many warm areas, the multiple field furnace binding, every layer has conveyer belt, it is characterized in that conveyer belt is mesh belt structure, the guipure below is provided with tar removing, lousiness equipment, be provided with between layers upset linking equipment, the loading plate angle of upset linking equipment and the distance between loading plate and guipure all can be regulated, be spaced from each other between layers, every one deck all is provided with airflow distribution device in body of heater both sides, airflow distribution device is provided with independently heated air circulation device and hot air heating apparatus and temperature control point and temperature monitoring point, temperature monitoring point is in the body of heater side, temperature control point is arranged on the back of hot air heating apparatus, adopt lateral blowing or top and bottom blowing or parallel blowing mode to carry out Cycling hot-blast heating, the main pipe rail of airflow distribution device is provided with the air intlet that replenishes fresh wind, and be provided with the exhaust outlet of the waste gas of eliminating, be pressure-fired in stove, be provided with the filter that filters out lousiness in waste gas before exhaust outlet, pipeline is provided with nitrogen inlet.
2. a kind of asphalt-based carbon fiber as claimed in claim 1 melting appartus not continuously, is characterized in that the described body of heater number of plies is the 3-9 layer, and every layer of length is 10-100 rice.
3. a kind of asphalt-based carbon fiber as claimed in claim 1 melting appartus not continuously, the spacing that it is characterized in that described temperature monitoring point is 0.5-5m, each temperature monitoring point has system's thermometric and overheated or burning warning function concurrently.
4. a kind of asphalt-based carbon fiber as claimed in claim 1 melting appartus not continuously, is characterized in that described body of heater is provided with the nitrogen extinguishing device, and the temperature detection of extinguishing device is that the temperature monitoring point by the body of heater side detects.
5. a kind of asphalt-based carbon fiber as claimed in claim 1 melting appartus not continuously, it is characterized in that described body of heater has insulation between layers, temperature is arranged to high temperature by low temperature, not melting the final temperature temperature is 325-350 ℃, high temperature section has to the low temperature dewatering section: with a certain amount of fresh wind of waste gas proportioning that high temperature section is discharged, the gas that makes temperature reach low temperature dewatering section temperature is incorporated into the plumbing installation of low temperature dewatering section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220617196 CN202936527U (en) | 2012-11-20 | 2012-11-20 | Pitch-based carbon fiber continuous non-melting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220617196 CN202936527U (en) | 2012-11-20 | 2012-11-20 | Pitch-based carbon fiber continuous non-melting device |
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| CN202936527U true CN202936527U (en) | 2013-05-15 |
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| CN 201220617196 Expired - Fee Related CN202936527U (en) | 2012-11-20 | 2012-11-20 | Pitch-based carbon fiber continuous non-melting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556306A (en) * | 2013-11-21 | 2014-02-05 | 江苏赛菲新材料有限公司 | Production method for preparing infusible continuous polycarbosilane fiber by industrial method |
| CN103643353A (en) * | 2013-11-21 | 2014-03-19 | 宿迁澳鑫斯新材料有限公司 | Infusible production apparatus of industrial continuous silicon carbide precursor fiber-polycarbosilane fiber |
-
2012
- 2012-11-20 CN CN 201220617196 patent/CN202936527U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556306A (en) * | 2013-11-21 | 2014-02-05 | 江苏赛菲新材料有限公司 | Production method for preparing infusible continuous polycarbosilane fiber by industrial method |
| CN103643353A (en) * | 2013-11-21 | 2014-03-19 | 宿迁澳鑫斯新材料有限公司 | Infusible production apparatus of industrial continuous silicon carbide precursor fiber-polycarbosilane fiber |
| CN103643353B (en) * | 2013-11-21 | 2015-09-23 | 宿迁澳鑫斯新材料有限公司 | A kind of industrialization continuous carbofrax fibre precursor wire---the infusible process units of polycarbosilane fiber |
| CN103556306B (en) * | 2013-11-21 | 2016-02-24 | 江苏赛菲新材料有限公司 | A kind of industry law prepares the infusible production method of continuous polycarbosilane fiber |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Pitch-based carbon fiber continuous non-melting device Effective date of registration: 20161104 Granted publication date: 20130515 Pledgee: Ma Jiaolu Pledgor: Sichuan Chuangyue Carbon Material Co., Ltd. Registration number: 2016510000060 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20181120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |