CN106498566A - Carbon fiber low-temperature carbonization furnace and controlling technical method - Google Patents
Carbon fiber low-temperature carbonization furnace and controlling technical method Download PDFInfo
- Publication number
- CN106498566A CN106498566A CN201611070680.XA CN201611070680A CN106498566A CN 106498566 A CN106498566 A CN 106498566A CN 201611070680 A CN201611070680 A CN 201611070680A CN 106498566 A CN106498566 A CN 106498566A
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- carbon fiber
- waste discharge
- carbonization furnace
- heater
- temperature carbonization
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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
- D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
- D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
- D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F9/22—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles
-
- 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
- D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
- D01F9/32—Apparatus therefor
Abstract
A kind of carbon fiber low-temperature carbonization furnace and controlling technical method, device includes body of heater, heating plate, heat-insulation layer, inert gas seal system, waste discharge system, heating plate adopts banding adding thermal resistance, and heating part is divided into each warm area according to technological requirement, isolated using warming plate between two adjacent warm areas；Waste discharge mouth is arranged at bottom of furnace body, and presses temperature range subsection setup.Device substitutes electric furnace heating wire and partition heating mode using banding adding thermal resistance, substantially prolongs the service life of low-temperature carbonization furnace, thoroughly solves " string temperature " phenomenon between warm area, and the thermograde for meeting production technology is required；Controlling technical method can be such that production waste gas instantaneously discharges, and temperature field in furnace, airflow field are evenly distributed, and reaction is uniform；Solve the fracture of wire difficult problem that the waste discharge of low-temperature carbonization furnace causes, improve yield and the quality of carbon fiber product, reduce the production cost of carbon fiber, solve that equipment life is short, maintenance cost is high, product yield is low, the difficult problem that quality is unstable.
Description
Technical field
The present invention relates to a kind of carbon fiber production low-temperature carbonization furnace and controlling technical method.
Background technology
In carbon fiber production, polyacrylonitrile-radical（PAN）Fiber is combined with the oxygen in air to carry out pre-oxidation and is converted into ladder type
Structure；The carbon fiber of phosphorus content more than 93% is generated through carbonization operation again.It is low that low-temperature carbonization furnace in carbonization operation is used for fiber
The equipment of warm carbonization, is processed to fiber at a temperature of 300～900 DEG C.Belong to a kind of Muffle furnace, heat resisting steel in its structure
The rectangular seal furnace chamber that plate is made, oxidized fibre carry out carbonization reaction under inertia shielding gas, and its molecular structure there occurs acutely
Change, the quality that there are about 43.3% are pyrolyzed runaway with waste gas and tar mode.
At present, traditional low-temperature carbonization furnace is present：（1）Body of heater mode of heating is unreasonable, working service high cost：Easily make
Into " string temperature " phenomenon, i.e., between each warm area, thermograde is unsatisfactory for technological requirement, and part warm area heating load is big, cause heater strip and
The furnace chamber life-span was greatly shortened to 1～2 year；（2）Carrier gas consumes high energy consumption：The high-temp waste gas produced in furnace chamber are taken away by carrier gas, with
Shi Zaiqi and waste gas have taken away substantial amounts of heat, not only increased the consumption of carrier gas, electric energy, also result in indoor environment temperature height,
It is unfavorable for enterprise employee health；（3）Waste discharge coke discharging is difficult；In Conventional cryogenic retort byproduct of reaction be easily detained and accumulation coking after,
Under drip on the fiber of operation, can not only produce fracture of wire affects the yield of carbon fiber product, moreover it is possible to cause carbon fiber Quality Down.
Content of the invention
The problem to be solved in the present invention is：For above-mentioned technical deficiency, there is provided a kind of carbon fiber low-temperature carbonization furnace and control
Technical method processed, so as to improve the stable operation level of equipment, improves yield and the quality of carbon fiber product, reduces carbon fiber
Production cost, the problem for overcoming above-mentioned prior art to exist.
Solve problem of the present invention to be adopted the technical scheme that：Carbon fiber low-temperature carbonization furnace includes body of heater, heating plate, insulation
Layer, inert gas seal system, waste discharge system, heating plate adopt banding adding thermal resistance, and by heating plate according to technological requirement point
Into each warm area, isolated by warming plate between the adjacent warm area of each two；Waste discharge mouth is arranged at bottom of furnace body, and presses temperature model
Enclose subsection setup.
During inert gas duct is laid in the heat-insulation layer near heating plate, the inert gas flows of body of heater outlet are entered
Direction is identical with carbon fiber traffic direction in body of heater, enters the inert gas flows direction of body of heater import and carbon fiber fortune in body of heater
Line direction is contrary.
Disturbance inert gas entrance is provided between two neighboring waste discharge mouth.
Bottom of furnace body residing for waste discharge mouth is pyramidal structure.
Its controlling technical method is：Heat according to needed for low-temperature carbonization furnace warm area, each warm area adding using 50～200kW
Thermal power, uses thermal insulation material between warm area and is isolated；Inert gas duct is laid in the heat-insulation system near heating plate,
200～350 DEG C are preheated to before noble gases enter body of heater；It is maximum that the waste discharge mouth of body of heater is arranged at fiber-reactive thing growing amount
300～400 DEG C, 450～550 DEG C and 550～700 DEG C of temperature range, waste discharge mouth is arranged at bottom of furnace body, and two neighboring
The inert gas entrance of disturbance is provided between waste discharge mouth, is passed through noble gases and is disturbed.
The positive effect of the present invention is：Traditional electric furnace heating wire and partition heating mode are substituted using banding adding thermal resistance, greatly
The service life of low-temperature carbonization furnace is extended greatly, " string temperature " phenomenon between warm area is thoroughly solved, is met the temperature of production technology
Degree gradient is required；Energy consumption is low, long service life, and noble gases consumption is low, and production waste gas instantaneously can be excluded, temperature field in furnace, gas
Flow Field Distribution is uniform, and reaction is uniform, solves the fracture of wire difficult problem that the waste discharge of low-temperature carbonization furnace causes, and improves the receipts of carbon fiber product
Rate and quality, reduce the production cost of carbon fiber；Can thoroughly solve that equipment life is short, maintenance cost is high, product yield is low, quality
A unstable difficult problem, and the requirement of different strand specifications can be met, such as 1K, 3K, 6K, 12K, 24K, 48K etc..
Description of the drawings
Structural representation of the accompanying drawing 1 for the present invention；Longitudinal section structural representation of the accompanying drawing 2 for accompanying drawing 1；Accompanying drawing 3 is accompanying drawing 1
Waste discharge mouth at cross-sectional.
Specific embodiment
Assembly of the invention as shown in accompanying drawing 1,2, it include body of heater 1, heating plate 6, heat-insulation layer 8, inert gas duct 5,
Waste discharge mouth 2, heating plate 6 adopt banding adding thermal resistance, and heating part is divided into each warm area according to technological requirement, and each warm area is adopted
The heating power of 50～200kW, is isolated using warming plate 7 between the adjacent warm area of each two；Waste discharge mouth 2 is arranged at body of heater
1 bottom, the bottom of furnace body residing for waste discharge mouth 2 are pyramidal structure（As shown in accompanying drawing 1,3）, waste discharge mouth 2 set by temperature range segmentation
Put three, be respectively arranged at the maximum temperature range of fiber-reactive thing growing amount, i.e., 300～400 DEG C, 450～550 DEG C and 550
, disturbance inert gas entrance 9 is provided between two neighboring waste discharge mouth 2, to prevent local from producing dead band by～700 DEG C；By inertia
During gas pipeline 5 is laid in the heat-insulation layer 8 near heating plate 6, inert gas flows direction and the stove of body of heater outlet 10 are entered
In body 1,4 traffic direction of fiber is identical, enters the inert gas flows direction of body of heater import 11 and 4 traffic direction of fiber in body of heater 1
Conversely, noble gases are preheated to 200～350 DEG C before entering body of heater, gas consumption can be made to reduce by 100～150m3/h.
Fiber 4 after oxidized is entered from body of heater entrance 11 and carry out carbonization reaction inside low-temperature carbonization furnace body 1, through each
After warm area reaction, subsequent processing is entered from body of heater outlet 10, heating plate 6 is heated to body of heater 1, it is ensured that the control temperature of each warm area
Degree；For preventing the air of interior from entering body of heater, sealed using noble gases, noble gases are passed through in inert gas duct 5
After heating, body of heater 1 is entered through inert gas seal chamber 12.Oxidized fibre cracking reaction thing is entered through waste discharge mouth 2 with noble gases
Body of heater 1 is discharged in 3 road of waste pipe, finally enters emission-control equipment.
Claims (5)
1. a kind of carbon fiber low-temperature carbonization furnace, it includes body of heater, heating plate, heat-insulation layer, inert gas seal system, waste discharge system
System, it is characterised in that：Heating plate adopts banding adding thermal resistance, and heating plate is divided into each warm area according to technological requirement, per two
Isolated by warming plate between individual adjacent warm area；Waste discharge mouth is arranged at bottom of furnace body, and presses temperature range subsection setup.
2. carbon fiber low-temperature carbonization furnace according to claim 1, it is characterised in that：Inert gas duct is laid on heating
In in heat-insulation layer near plate, the inert gas flows direction for entering body of heater outlet is identical with carbon fiber traffic direction in body of heater,
The inert gas flows direction for entering body of heater import is contrary with carbon fiber traffic direction in body of heater.
3. carbon fiber low-temperature carbonization furnace according to claim 1, it is characterised in that：It is provided between two neighboring waste discharge mouth
Disturbance inert gas entrance.
4. carbon fiber low-temperature carbonization furnace according to claim 1, it is characterised in that：Bottom of furnace body residing for waste discharge mouth is cone
Shape structure.
5. carbon fiber low-temperature carbonization furnace according to claim 1, its controlling technical method is：According to low-temperature carbonization furnace warm area
Required heat, each warm area are used thermal insulation material between warm area and are isolated using the heating power of 50～200kW；By indifferent gas
In heat-insulation system of the body pipe laying near heating plate, before noble gases enter body of heater, it is preheated to 200～350 DEG C；Stove
The waste discharge mouth of body is arranged at 300～400 DEG C, 450～550 DEG C and 550～700 maximum of temperature range of fiber-reactive thing growing amount
DEG C, waste discharge mouth is arranged at bottom of furnace body, and is provided with the inert gas entrance of disturbance between two neighboring waste discharge mouth, is passed through inertia
Gas is disturbed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611070680.XA CN106498566A (en) | 2016-11-29 | 2016-11-29 | Carbon fiber low-temperature carbonization furnace and controlling technical method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611070680.XA CN106498566A (en) | 2016-11-29 | 2016-11-29 | Carbon fiber low-temperature carbonization furnace and controlling technical method |
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| CN106498566A true CN106498566A (en) | 2017-03-15 |
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| CN201611070680.XA Pending CN106498566A (en) | 2016-11-29 | 2016-11-29 | Carbon fiber low-temperature carbonization furnace and controlling technical method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107164844A (en) * | 2017-06-07 | 2017-09-15 | 广州赛奥碳纤维技术有限公司 | A kind of high-efficiency carbon fibre low temperature carbonization furnace waste discharge pipe-line system |
| CN107541810A (en) * | 2017-09-18 | 2018-01-05 | 中安信科技有限公司 | The tracing system of carbon fibre carbonizing furnace exhaust pipeline |
| CN108072039A (en) * | 2017-12-29 | 2018-05-25 | 河南永煤碳纤维有限公司 | A kind of carbon fiber production emission-control equipment and method |
| CN108101047A (en) * | 2018-02-07 | 2018-06-01 | 安徽欣尔特新材料科技有限公司 | A kind of multi-temperature zone continous way superhigh temperature graphitizing furnace |
| CN111733485A (en) * | 2020-07-30 | 2020-10-02 | 广州赛奥碳纤维技术股份有限公司 | Atmosphere balance system of carbonization furnace |
| CN115434042A (en) * | 2022-09-23 | 2022-12-06 | 山西钢科碳材料有限公司 | Atmosphere control method of polyacrylonitrile-based carbon fiber pre-oxidized fiber in carbonization process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202945388U (en) * | 2012-09-11 | 2013-05-22 | 广州赛奥碳纤维技术有限公司 | Novel low-energy-consumption low-temperature carbide furnace |
| CN104611785A (en) * | 2013-11-05 | 2015-05-13 | 中国科学院宁波材料技术与工程研究所 | Low-temperature carbonization furnace |
| CN105925281A (en) * | 2016-05-13 | 2016-09-07 | 安徽瑞丝环保能源有限公司 | Emission-free carbonization equipment |
| CN206256205U (en) * | 2016-11-29 | 2017-06-16 | 河南永煤碳纤维有限公司 | Carbon fiber low-temperature carbonization furnace |
-
2016
- 2016-11-29 CN CN201611070680.XA patent/CN106498566A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202945388U (en) * | 2012-09-11 | 2013-05-22 | 广州赛奥碳纤维技术有限公司 | Novel low-energy-consumption low-temperature carbide furnace |
| CN104611785A (en) * | 2013-11-05 | 2015-05-13 | 中国科学院宁波材料技术与工程研究所 | Low-temperature carbonization furnace |
| CN105925281A (en) * | 2016-05-13 | 2016-09-07 | 安徽瑞丝环保能源有限公司 | Emission-free carbonization equipment |
| CN206256205U (en) * | 2016-11-29 | 2017-06-16 | 河南永煤碳纤维有限公司 | Carbon fiber low-temperature carbonization furnace |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107164844A (en) * | 2017-06-07 | 2017-09-15 | 广州赛奥碳纤维技术有限公司 | A kind of high-efficiency carbon fibre low temperature carbonization furnace waste discharge pipe-line system |
| CN107541810A (en) * | 2017-09-18 | 2018-01-05 | 中安信科技有限公司 | The tracing system of carbon fibre carbonizing furnace exhaust pipeline |
| CN108072039A (en) * | 2017-12-29 | 2018-05-25 | 河南永煤碳纤维有限公司 | A kind of carbon fiber production emission-control equipment and method |
| CN108101047A (en) * | 2018-02-07 | 2018-06-01 | 安徽欣尔特新材料科技有限公司 | A kind of multi-temperature zone continous way superhigh temperature graphitizing furnace |
| CN111733485A (en) * | 2020-07-30 | 2020-10-02 | 广州赛奥碳纤维技术股份有限公司 | Atmosphere balance system of carbonization furnace |
| CN115434042A (en) * | 2022-09-23 | 2022-12-06 | 山西钢科碳材料有限公司 | Atmosphere control method of polyacrylonitrile-based carbon fiber pre-oxidized fiber in carbonization process |
| CN115434042B (en) * | 2022-09-23 | 2023-10-03 | 山西钢科碳材料有限公司 | Atmosphere control method for polyacrylonitrile-based carbon fiber pre-oxidized fiber in carbonization process |
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Application publication date: 20170315 |