CN206143365U - A oxidation unit in advance for carbon fiber production - Google Patents
A oxidation unit in advance for carbon fiber production Download PDFInfo
- Publication number
- CN206143365U CN206143365U CN201621151441.2U CN201621151441U CN206143365U CN 206143365 U CN206143365 U CN 206143365U CN 201621151441 U CN201621151441 U CN 201621151441U CN 206143365 U CN206143365 U CN 206143365U
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- China
- Prior art keywords
- oxidation furnace
- furnace
- temperature
- burner hearth
- oxidation
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Abstract
The utility model discloses an oxidation unit in advance for carbon fiber production belongs to carbon fiber production processing technology field. Oxidation unit includes preoxidation furnace in advance, the air feed system, and the exhaust system, drive arrangement and temperature detect control system. Wherein, preoxidation furnace is established ties by a preoxidation furnace and the 2nd preoxidation furnace to form, and a preoxidation furnace and the 2nd preoxidation furnace have a plurality of furnace of upper and lower parallel arrangement respectively, and furnace temperature from bottom to top risees gradually in the preoxidation furnace, and the 2nd preoxidation furnace 5's furnace temperature risees from top to bottom gradually. The furnace that air feed system and exhaust system pass through pipeline and a preoxidation furnace and the 2nd preoxidation furnace is connected, and drive arrangement installs the both ends at every furnace. This preoxidation furnace has the warm area and gradient distribution of the temperature is reasonable, heating system temperature characteristics such as even, but is accurate control furnace temperature 100 DEG C 300 gradually change between DEG C, temperature control accuracy can guarantee not to be less than 0.5 DEG C.
Description
Technical field
This utility model is related to a kind of pre-oxidation device for carbon fiber production, belongs to carbon fiber production and processing technology neck
Domain.
Background technology
In carbon fibre carbonizing production process to the first step be exactly preoxidation process, its objective is to make with linear macromolecule
The polyacrylonitrile fibril of chain cannot not be changed into moltenly the heat-resisting trapezium structure not fired after high temperature oxidation process so as to stand follow-up
High temperature cabonization process and keep fiber condition.
Preoxidation process is very big to the quality of carbon fiber and the impact of yield.At present the pre-oxidation type of furnace both domestic and external has interior-heat
Formula pre-oxidation furnace, external heating type furnace for preliminary, recirculation furnace, solid-solid heat transfer stove, the pre-oxidation furnace with sulfuric horizon are various, often
The characteristics of kind of pre-oxidation furnace has each different according to each different technique, and existing pre-oxidation to equip generally existing body of heater close
Seal bad grade, the unequal phenomenon of isothermal region.Therefore, being badly in need of one kind can meet polyacrylonitrile fibril pre-oxidation characteristic, technique bar
Part and production-scale pre-oxidation furnace.
Utility model content
A kind of pre-oxidation device for carbon fiber production is provided to solve above-mentioned technical problem this utility model, is adopted
The technical scheme for taking is as follows：
A kind of pre-oxidation device for carbon fiber production, including pre-oxidation furnace, air feed system 2, exhaust system 3 drives
Device 4 and temperature measurement control system.Wherein, pre-oxidation furnace is by the first pre-oxidation furnace 1 and the series connection group of the second pre-oxidation furnace 5
There are respectively some burner hearths arranged in parallel up and down into, the first pre-oxidation furnace 1 and the second pre-oxidation furnace 5, in the first pre-oxidation furnace 1
The temperature of fire box temperature upper strata burner hearth is not less than the temperature of lower floor's burner hearth, the fire box temperature lower floor burner hearth of the second pre-oxidation furnace 5
Temperature is not less than the temperature of upper strata burner hearth；Air feed system 2 and exhaust system 3 are pre- with the first pre-oxidation furnace 1 and second by pipeline
The burner hearth connection of oxidation furnace 5, driving means 4 are arranged on the two ends of each burner hearth.
Preferably, the heating furnace body of pre-oxidation furnace includes burner hearth 11, the pre-oxidation furnace heat-insulation layer 12 in the outside of burner hearth 11 and logical
Pre-oxidation furnace temperature sensor 13 and pre-oxidation furnace heater 14 that oversampling circuit is connected with temperature measurement control system；Wherein pre-oxidation furnace
Temperature sensor 13 and pre-oxidation furnace heater 14 are arranged between burner hearth 11 and pre-oxidation furnace heat-insulation layer 12, to realize in burner hearth
The detection and control of temperature.
Preferably, air feed system 2 includes pressure fan 21, the blast main 22 being connected with the air outlet of pressure fan 21, with air-supply
The connection of supervisor 22 and the blowpipe 23 being connected with each burner hearth middle part side of pre-oxidation furnace respectively, blowpipe 23 is near entrance
Outside is provided with air blowing control valve 24, supply air sensor 26 and air-supply heater 25 is provided with inside blowpipe 23, in air-supply
Ajutage heat-insulation layer 27 is additionally provided with outside pipe 23.
It is highly preferred that supply air sensor 26 and air-supply heater 25 are chain with temperature measurement control system, so as to being supplied
The temperature of wind is controlled.
Preferably, exhaust system 3 is respectively arranged at two ends with the first air-out in the first pre-oxidation furnace 1 and the second pre-oxidation furnace 5
The discharge pipe 32 of pipe 31 and second, the first discharge pipe 31 and the second discharge pipe 32 by respectively with going out that each burner hearth two ends is connected
Wind arm 33 is connected.
Preferably, the pre-oxidation furnace 5 of first pre-oxidation furnace 1 and second has respectively 7 burner hearths arranged in parallel up and down, silk
Beam 9 is entered by driving means 4 from the bottom of the first pre-oxidation furnace 1, and enters back into the top of the second pre-oxidation furnace 5 by Base top contact
Portion, then driven by the bottom extraction of the second pre-oxidation furnace 5 by driving means 4.Continuous integration can be set in each burner hearth
Heating warm area, may also be employed the heating warm area of discontinuous discontinuous.For example, 6 are arranged along its length in a burner hearth
Heating warm area.
Preferably, the pre-oxidation furnace 5 of first pre-oxidation furnace 1 and second has respectively 7 burner hearths arranged in parallel up and down, the
The temperature of each layer burner hearth is successively raised from bottom to top in one pre-oxidation furnace 1；The temperature of each layer burner hearth is by upper in second pre-oxidation furnace 5
Successively raise downwards.
Preferably, the pre-oxidation furnace 5 of first pre-oxidation furnace 1 and second has respectively 7 burner hearths arranged in parallel up and down, the
The temperature of each layer burner hearth is successively raised upwards by the bottom to layer 6 in one pre-oxidation furnace 1, and layer 7 is that temperature is not elevated
Constant temperature transition region；The temperature of each layer burner hearth is successively raised by top down to layer 6 in second pre-oxidation furnace 5, layer 7 temperature
The not elevated constant temperature transition region of degree.
This utility model obtain beneficial effect be：
Pre-oxidation furnace of the present utility model is provided with the heating compensation device chain with control device in body of heater, can be accurate
Control in-furnace temperature is gradually changed between 100 DEG C -300 DEG C, can well meet the needs of PAN precursor pre-oxidations reaction.
Rationally, heating system temperature is uniform, and temperature control precision can ensure to be not less than for the warm area and temperature gradient distribution of the pre-oxidation furnace
±0.5℃。
Meanwhile, the heat-insulating property and energy-efficient performance of the pre-oxidation furnace is good, and furnace outer wall temperature can be made to be less than 25 DEG C.The stove
Interior heat circulating system air quantity, pathogenic wind-warm and blast it is adjustable, waste gas can be discharged by dedicated system, will not be revealed to workshop.
Description of the drawings
Fig. 1 is that this utility model first pre-oxidizes body of heater structural representation.
Fig. 2 is that this utility model second pre-oxidizes body of heater structural representation.
Fig. 3 is the structural representation of this utility model ventilation duct and burner hearth junction.
In figure：1, the first pre-oxidation furnace；2, air feed system；3, exhaust system；4, driving means；5, the second pre-oxidation furnace；
9, tow；11, burner hearth；12, pre-oxidation furnace heat-insulation layer；13, pre-oxidation furnace temperature sensor；14, pre-oxidation furnace heater；21, air-supply
Machine；22, blast main；23, blowpipe；24, control valve；25, heater of blowing；26, supply air sensor；27, ajutage is protected
Warm layer；31, the first discharge pipe；32, the second discharge pipe；33, air-out arm；101, the first burner hearth；102, the second burner hearth；103, the
Three burner hearths；104, the 4th burner hearth；105, the 5th burner hearth；106, the 6th burner hearth；107, the 7th burner hearth；108, the 8th burner hearth；109,
9th burner hearth；110, the tenth burner hearth；111, the 11st burner hearth；112, the 11st burner hearth；113, the 13rd burner hearth；114, the 14th
Burner hearth.
Specific embodiment
This utility model is described in further details below in conjunction with the accompanying drawings, but described further below is not intended as to this practicality
New restriction.
Wherein, Fig. 1 is that this utility model first pre-oxidizes body of heater structural representation.Fig. 2 is the pre- oxygen of this utility model second
Change furnace binding schematic diagram.The direction of arrow is the direction of advance of fibre bundle in Fig. 1 and Fig. 2.Fig. 3 is this utility model ventilation
Pipe and the structural representation of burner hearth junction.The flow direction of the hot blast that the direction of arrow provides for air feed system in Fig. 3.
Knowable to Fig. 1-Fig. 3, the pre-oxidation device includes two pre-oxidation furnaces being connected in series, i.e. the first pre-oxidation furnace 1
With the second pre-oxidation furnace 5, and the air feed system 2 for providing wind regime for each pre-oxidation furnace, the exhaust system 3 for scavenging, Gu
It is scheduled on the driving means 4 of pre-oxidation furnace both sides.Meanwhile, it is additionally provided with by cable circuit and each part heating element heater and temperature sensing
The temperature measurement control system of element connection, to realize the precise control of overall to pre-oxidation device and each spot temperature.
First pre-oxidation furnace 1 mainly by from upper first burner hearth 101 arranged in parallel successively upwards, the second burner hearth 102, the
Three burner hearths 103, the 4th burner hearth 104, the 5th burner hearth 105, the 6th burner hearth 106 and the 7th burner hearth 107 are constituted.And the second pre-oxidation furnace
5 mainly by the 8th burner hearth 108, the 9th burner hearth 109, the tenth burner hearth 110, the 11st stove arranged in parallel successively from the top down
Thorax 111, the 11st burner hearth 112, the 13rd burner hearth 113 and the 14th burner hearth 114 are constituted.It is designed with driving on the both sides of each burner hearth
Dynamic roller drives tow 9 to advance as driving means 4.In use, the temperature of the burner hearth 114 of the first burner hearth 101 to the 14th
Incremented by successively, tow 9 is entered from the left side of first burner hearth of bottom 101 of the first pre-oxidation furnace 1, is drawn by the right side of the 7th burner hearth 107
Go out and the 8th burner hearth 108 into the second pre-oxidation furnace 5 left side, finally drawn by the right side of the 14th burner hearth 114.Using
During, also can be using the 7th burner hearth 107 and the 14th burner hearth 114 as temperature-resistant constant temperature transition region.
First pre-oxidation furnace 1 is identical with the length of each burner hearth in the second pre-oxidation furnace 5, and two ends are alignd.In each stove
The centre of thorax nearby connects side with the blowpipe 23 of air feed system 2, to realize that wind-force is supplied.Air feed system 2 is provided with air-supply
Machine 21, and the blast main 22 being connected with the air-supply outlet of pressure fan 21, blast main 22 respectively with above-mentioned blowpipe 23
Connection.Control valve 24 is provided near the connecting portion of blowpipe 23 and blast main 22, in order to control air output.In air-supply
Air-supply heater 25 and supply air sensor 26 (Fig. 3) are provided with arm 23, and ajutage heat-insulation layer 27 is additionally provided with outside tube wall.
In the same manner, it is provided with pre-oxidation furnace temperature sensor 13 between each burner hearth 11 and the pre-oxidation furnace heat-insulation layer 12 being wrapped in outside burner hearth 11
Practiced with temperature measurement control system by cable circuit with pre-oxidation furnace heater 14, and above-mentioned heater and sensor
Level, to realize detection and control to temperature in blow pipeline and burner hearth.Above-mentioned heater and sensor can be used as temperature-compensatings
Device and control device, such as computer, the temperature being electrically connected in accurate chain control burner hearth of the furnace body.
Exhaust system 3 is mounted on each pre-oxidation furnace, exhaust system 3 is by the first discharge pipe 31, the second discharge pipe
32 and 14 air-out arms 33.Wherein, the first discharge pipe 31 and the second discharge pipe 32 are vertically arranged, each installed in pre-oxidation furnace
The both sides of burner hearth, and connected by the sidepiece near both sides end points of the air-out arm 33 with each burner hearth or top, in order to incite somebody to action
The waste gas produced in preoxidation process is excluded from body of heater.
Although this utility model is disclosed as above with preferred embodiment, it is not limited to this utility model, appoints
What person skilled in the art, in without departing from spirit and scope of the present utility model, can do various changes and modification, therefore
Protection domain of the present utility model should be by being defined that claims are defined.
Claims (8)
1. a kind of pre-oxidation device for carbon fiber production, including pre-oxidation furnace, air feed system (2), exhaust system (3) drives
Dynamic device (4) and temperature measurement control system, it is characterised in that pre-oxidation furnace is by the first pre-oxidation furnace (1) and the second pre- oxygen
Change stove (5) to be composed in series, the first pre-oxidation furnace (1) and the second pre-oxidation furnace (5) have respectively some stoves arranged in parallel up and down
Thorax, the temperature of the first pre-oxidation furnace (1) internal furnace temperature upper strata burner hearth is not less than the temperature of lower floor's burner hearth, the second pre-oxidation furnace
(5) temperature of fire box temperature lower floor burner hearth is not less than the temperature of upper strata burner hearth；Air feed system (2) and exhaust system (3) pass through
Pipeline is connected with the burner hearth of the first pre-oxidation furnace (1) and the second pre-oxidation furnace (5), and driving means (4) are installed in each burner hearth
Two ends.
2. pre-oxidation device according to claim 1, it is characterised in that the heating furnace body of pre-oxidation furnace includes burner hearth
(11) pre-oxidation furnace heat-insulation layer (12), on the outside of burner hearth (11) and the pre-oxidation furnace being connected with temperature measurement control system by circuit
Temperature sensor (13) and pre-oxidation furnace heater (14)；Wherein pre-oxidation furnace temperature sensor (13) and pre-oxidation furnace heater
(14) between burner hearth (11) and pre-oxidation furnace heat-insulation layer (12).
3. pre-oxidation device according to claim 1, it is characterised in that air feed system (2) includes pressure fan (21), and send
The blast main (22) of blower fan (21) air outlet connection, be connected with blast main (22) and respectively with pre-oxidation furnace each burner hearth in
The blowpipe (23) of portion side connection, blowpipe (23) is provided with air blowing control valve (24) near entrance outside, in air-supply
Supply air sensor (26) and air-supply heater (25) are provided with inside pipe (23), ajutage are additionally provided with outside blowpipe (23) and are protected
Warm layer (27).
4. pre-oxidation device according to claim 3, it is characterised in that supply air sensor (26) and air-supply heater (25)
It is chain with temperature measurement control system.
5. pre-oxidation device according to claim 1, it is characterised in that exhaust system (3) in the first pre-oxidation furnace (1) and
Second pre-oxidation furnace (5) is respectively arranged at two ends with the first discharge pipe (31) and the second discharge pipe (32), the first discharge pipe (31) and
Second discharge pipe (32) is connected by the air-out arm (33) being connected with each burner hearth two ends respectively.
6. pre-oxidation device according to claim 1, it is characterised in that first pre-oxidation furnace (1) and the second pre- oxygen
Changing stove (5) has respectively 7 burner hearths arranged in parallel up and down, and tow (9) is by driving means (4) from the first pre-oxidation furnace (1)
Bottom enters, and enters back into the top of the second pre-oxidation furnace (5) by Base top contact, then is driven by second by driving means (4)
Draw the bottom of pre-oxidation furnace (5).
7. pre-oxidation device according to claim 6, it is characterised in that first pre-oxidation furnace (1) and the second pre- oxygen
Changing stove (5) has respectively 7 burner hearths up and down arranged in parallel, in the first pre-oxidation furnace (1) temperature of each layer burner hearth from bottom to top by
Layer is raised；
The temperature of each layer burner hearth is successively raised from top to bottom in second pre-oxidation furnace (5).
8. pre-oxidation device according to claim 6, it is characterised in that first pre-oxidation furnace (1) and the second pre- oxygen
Changing stove (5) has respectively 7 burner hearths up and down arranged in parallel, in the first pre-oxidation furnace (1) temperature of each layer burner hearth from the bottom to
Upper successively to raise to layer 6, layer 7 is the not elevated constant temperature transition region of temperature；Each layer burner hearth in second pre-oxidation furnace (5)
Temperature is successively raised by top down to layer 6, the not elevated constant temperature transition region of layer 7 temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621151441.2U CN206143365U (en) | 2016-10-31 | 2016-10-31 | A oxidation unit in advance for carbon fiber production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621151441.2U CN206143365U (en) | 2016-10-31 | 2016-10-31 | A oxidation unit in advance for carbon fiber production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206143365U true CN206143365U (en) | 2017-05-03 |
Family
ID=58623641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621151441.2U Withdrawn - After Issue CN206143365U (en) | 2016-10-31 | 2016-10-31 | A oxidation unit in advance for carbon fiber production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206143365U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106480553A (en) * | 2016-10-31 | 2017-03-08 | 哈尔滨天顺化工科技开发有限公司 | A kind of pre-oxidation device for carbon fiber production |
| CN110055624A (en) * | 2019-05-20 | 2019-07-26 | 中国科学院山西煤炭化学研究所 | Method for pre-oxidizing, polyacrylonitrile carbon fiber and the preparation method of polyacrylonitrile fibre |
| CN110670172A (en) * | 2019-09-19 | 2020-01-10 | 大同新成新材料股份有限公司 | Carbon fiber pre-oxidation processing device and method |
-
2016
- 2016-10-31 CN CN201621151441.2U patent/CN206143365U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106480553A (en) * | 2016-10-31 | 2017-03-08 | 哈尔滨天顺化工科技开发有限公司 | A kind of pre-oxidation device for carbon fiber production |
| CN110055624A (en) * | 2019-05-20 | 2019-07-26 | 中国科学院山西煤炭化学研究所 | Method for pre-oxidizing, polyacrylonitrile carbon fiber and the preparation method of polyacrylonitrile fibre |
| CN110670172A (en) * | 2019-09-19 | 2020-01-10 | 大同新成新材料股份有限公司 | Carbon fiber pre-oxidation processing device and method |
| CN110670172B (en) * | 2019-09-19 | 2022-06-07 | 大同新成新材料股份有限公司 | Carbon fiber pre-oxidation processing device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170503 Effective date of abandoning: 20180717 |