CN108103615A - A kind of pre- carbonization technique of high-efficiency carbon fibre and equipment - Google Patents
A kind of pre- carbonization technique of high-efficiency carbon fibre and equipment Download PDFInfo
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- CN108103615A CN108103615A CN201810010914.4A CN201810010914A CN108103615A CN 108103615 A CN108103615 A CN 108103615A CN 201810010914 A CN201810010914 A CN 201810010914A CN 108103615 A CN108103615 A CN 108103615A
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- 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
Abstract
The present invention discloses a kind of efficiently pre- carbonization technique and equipment.Pre- carburizing reagent is divided into two stages to complete by the main chemical reactions and engineering characteristic being carbonized in advance according to thermostabilization fiber, and there are different temperature fields and tension field in each stage, preferably to provide the condition of pre- carbonization thermal chemical reaction.Simultaneously according to the emissions concentration of pre- carburizing reagent different phase and discharge capacity, pollution of the emission to fiber and the corrosion condition to furnace muffle, different furnace muffles and respective waste discharge system are designed, to realize the purpose being efficiently carbonized in advance.
Description
Technical field
The invention belongs to techniques and equipment field prepared by carbon fiber, are mainly used for the pre- carbonization of the carbon fiber of all kinds of matrixes
(low-temperature carbonization) technique.
Background technology
Carbon fibre precursor is by thermostabilization (or pre-oxidation), and pre- to be carbonized (or low-temperature carbonization), high temperature cabonization is prepared into
Carbon fiber.Usual carbon fibre precursor first passes through 200-300 degrees Celsius of thermostabilization process, obtains thermostabilization fiber
(or oxidization fiber)；Then by 300-1000 degrees Celsius of pre- carbonization technique processing, thermostabilization fiber is transformed into class graphite flake
Layer structure；Using 1000-1600 degrees Celsius of high temperature cabonization process, more other nitrogen, hydrogen, oxygen elements are removed, are become
Into the carbon fiber of phosphorus content more than 92%.
Except thermostabilization technique, pre- carbonization technique is another core process prepared by carbon fiber, and importance is embodied in：
In terms of pre- carbonized structure transformation, the pre- carbonization technique of fiber is the aromatic ring and unsaturation in fiber after thermostabilization
The approach that the conjugated structure of double bond composition changes to the class graphite platelet structure of large-size, whether pre- carbonization technique is loyal to perform
The transformation of this structure, this directly influences the mechanical property of carbon fiber.
In terms of the chemical reaction being carbonized in advance, comprising chemical reaction be extremely complex, including intermolecular friendship
The reactions such as connection, more aromatizations, thermal cracking, the formation of class graphite flake layer.Because the thermostabilization chemical fibre that each carbon fiber company uses
The difference of structure is tieed up, so being defined to the temperature conditionss of all kinds of chemical reactions also different.In a word for each of pre- carbonisation
The specific chemical reaction condition of class, academia is not also very clearly with defining explicitly.
In terms of specific production, the capital of the pre- carbonization technique of all carbon fibre precursors without exception generates a large amount of in the world
Exhaust gas and tar, exhaust gas and tar emission easily bring the obstructed of waste discharge system, influence to produce continuous operation, also result in life
Fiber in production is contaminated, and directly affects the improper decline of fibre property.
From the present aspect that is manufactured into of carbon fiber, largely cracking can occur in pre- carbonization technique and lose for thermostabilization fiber
The non-carbon elements such as weight, nitrogen, hydrogen, oxygen are removed in the form of small molecule exhaust gas or tar liquid.It is former that substantial amounts of carbon has also been taken away simultaneously
Son reduces carbonization rate, adds the quantity and cost for producing the precursor used in similary weight carbon fiber, directly results in carbon
The rising of fiber manufacturing cost.
Current carbon fiber manufacturing enterprise major in the world generates thermostabilization fiber being determined under different carburizing temperatures
Exhaust gas and tar content after, will be carbonized in advance (low-temperature carbonization) be broadly put into a temperature range at 300-1000 degrees Celsius
It is completed in the carbide furnace of metal furnace muffle.But the exhaust gas and coke of a large amount of high concentrations can be generated in the pre- carbonization technique stage
Oil, these exhaust gas and tar can be deposited in metal furnace muffle, and heavy corrosion metal furnace muffle, causes burner hearth to be worn at high temperature
Hole so that air enters, and seriously affects the performance and quality of carbon fiber.The service life of metal furnace muffle greatly shortens simultaneously,
Become vulnerable part.After only being torn open greatly to huge carbide furnace at this time, metal furnace muffle is repaired or replaced, no matter which
Kind mode will all pay huge economic cost.
For this purpose, carbon fiber manufacturing enterprise need low cost operation pre- carbonization technique and the more long-life, it is inexpensive
The low temperature carbonization furnace metal furnace muffle of maintenance goes meet the needs of carbon fiber high efficiency production, inexpensive output.
The content of the invention
The present invention is to solve current industrial circle pre- carbonization technique broadly in 300-1000 degrees Celsius of metal horse
A large amount of drawbacks caused by not being completed in the carbide furnace of burner hearth.It provides one and is more in line with the different intrinsic chemical reactions of pre- carbonization
And the technique of order is with equipping solution.Pre- carbonization efficiency is promoted, promotes the mechanical property of carbon fiber, carbonization rate, production
Continuation, reduce carbon fiber manufacture cost, equip use cost.
Patent of the present invention is realized by following technical solution：
A kind of efficiently pre- carbonization technique and equipment, it is characterized in that：According to the pre- carburizing reagent principle of fiber after thermostabilization,
Pre- carbonization thermal chemical reaction is divided into two stages, there are different temperature fields and tension field in each stage, and each stage is respective
Furnace muffle in generate exhaust gas and tar, discharged by respective waste discharge system.Pre- carbonization thermal chemical reaction is divided into two
Stage, first stage reaction temperature field are 300-500 degrees Celsius；Second stage reaction temperature field is Celsius for 500-1000
Degree.It is respectively mounted before first stage of reaction, after second stage of reaction, between first stage of reaction and second stage of reaction
There is the driving equipment for generating tension field.First stage of reaction using metal furnace muffle, second stage of reaction using graphite,
The nonmetallic furnace muffle of carborundum, ceramic material.The furnace muffle of first stage of reaction and the Muffle furnace of second stage
Thorax is there are two types of arrangement mode, first, the arrangement mode of tiling；Second is that the arrangement mode of stacked on top.The wherein arrangement of stacked on top
There are two types of modes, is each mounted on first, two furnace muffles are first in respective metal shell, then whole stacked on top again；Two
After being two furnace muffle elder generation stacked on top, in shared metal shell.The high concentration that first stage of reaction generates
Exhaust gas and tar are discharged by the waste discharge system of huge discharge；The low concentration gas and tar that second stage generates, pass through float
The waste discharge system discharge of amount.There are two types of connections for the waste discharge system of first stage of reaction and the waste discharge system of second stage of reaction
Mode, first, two stage respective waste discharge systems, respectively enter air purification facility；Second is that two stages respective waste discharge system
Integration and after, together into air purification facility.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention dexterously make use of fine after thermostabilization
The pre- carburizing reagent principle of dimension, by the exhaust gas and tar that are generated at a temperature of different pre- carbonization techniques according to the highest shortest path of efficiency
It discharges in footpath.Not only the risk for due to exhaust gas and tar pollution fiber quality being caused to decline had been reduced, but also has reduced exhaust gas and tar exists
The harm of metal furnace muffle deposition.While promoting fiber quality, and reduce the input in terms of plant maintenance or repair, it is non-
Often suitable carbon fiber low cost production.
Description of the drawings
Fig. 1 is the principle of a kind of pre- carbonization technique of high-efficiency carbon fibre and equipment tiling arrangement mode；
Fig. 2A is a kind of pre- carbonization technique of high-efficiency carbon fibre and equipment stacked on top, and two furnace muffles are first each mounted on
In respective metal shell, the then principle of the whole arrangement mode of stacked on top again；
Fig. 2 B are a kind of pre- carbonization technique of high-efficiency carbon fibre and equip stacked on top, two furnace muffle elder generation stacked on top
Afterwards, the principle of the arrangement mode in same metal shell
In figure, 1. driving equipments；2. the Muffle furnace metal shell of first stage of reaction；First stage of reaction of 2a.
Furnace muffle；3. the Muffle furnace metal shell of second stage of reaction；The furnace muffle of second stage of reaction of 3a.；4. fiber；
5. shared metal shell.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings, but the implementation of the present invention is not limited to this.
Embodiment
A kind of pre- carbonization technique of high-efficiency carbon fibre of the present invention and equipment.As shown in Figure 1, Figure 2 shown in A and Fig. 2 B, due to by pre- carbon
Change thermal chemical reaction and be divided into two stages, the equipment order that wherein fiber (4) passes through successively is：Driving equipment (1), first anti-
The furnace muffle (2a) in the stage of answering, driving equipment (1), the furnace muffle (3a) of second stage of reaction, driving equipment (1).It drives
Dynamic equipment (1) provides tension field for two stages of pre- carbonization chemical reaction, and the furnace muffle (2a) of first stage of reaction is
Pre- first stage of reaction of carbonization provides 300-500 degrees Celsius of temperature field, and the furnace muffle (3a) of second stage of reaction is
Pre- second stage of reaction of carbonization provides 500-1000 degrees Celsius of temperature field.In the furnace muffle (2a) of first stage of reaction
The tar and exhaust gas of high concentration are generated, is discharged by the waste discharge system of huge discharge；The furnace muffle (3a) of second stage of reaction
The exhaust gas and tar of the low concentration of interior generation are discharged by the waste discharge system of small displacement.The furnace muffle of first stage of reaction
(2a) uses metal, and the furnace muffle (3a) of second stage of reaction is using graphite, carborundum, ceramic material.
As shown in Figure 1, Figure 2 shown in A, the furnace muffle (2a) of first stage of reaction is mounted on the Muffle of first stage of reaction
In stove metal shell (2).The furnace muffle (3a) of second stage of reaction is mounted on the Muffle furnace metal of second stage of reaction
In shell (3).Then by the Muffle furnace metal shell (2) of first stage of reaction and the Muffle furnace gold of second stage of reaction
Belong to shell (3) stacked on top.
As shown in Figure 2 B, the furnace muffle (2a) of first stage of reaction and the furnace muffle (3a) of second stage of reaction
It is mounted on after stacked on top in shared metal shell (5).
Claims (7)
1. a kind of efficiently pre- carbonization technique and equipment, it is characterized in that：It, will according to the pre- carburizing reagent principle of fiber after thermostabilization
Pre- carbonization thermal chemical reaction is divided into two stages, and there are different temperature fields and tension field in each stage, and each stage is respective
The exhaust gas and tar generated in furnace muffle, is discharged by respective waste discharge system.
2. a kind of efficiently pre- carbonization technique and equipment according to claim 1, it is characterized in that：To be carbonized thermal chemical reaction in advance
It is divided into two stages, first stage reaction temperature field is 300-500 degrees Celsius；Second stage reaction temperature field is 500-
1000 degrees Celsius.
3. a kind of efficiently pre- carbonization technique and equipment according to claim 1, it is characterized in that：Before first stage of reaction,
It is mounted on generating the driving dress of tension field after second stage of reaction, between first stage of reaction and second stage of reaction
It is standby.
4. a kind of efficiently pre- carbonization technique and equipment according to claim 1, it is characterized in that：First stage of reaction uses
Metal furnace muffle, second stage of reaction is using graphite, carborundum, the nonmetallic furnace muffle of ceramic material.
5. a kind of efficiently pre- carbonization technique and equipment according to claim 1, it is characterized in that：The horse of first stage of reaction
Not the furnace muffle of burner hearth and second stage is there are two types of arrangement mode, first, the arrangement mode of tiling；Second is that stacked on top
Arrangement mode.Wherein there are two types of the arrangement modes of stacked on top, first, two furnace muffles are first each mounted on respective metal
In shell, then whole stacked on top again；Second is that after two furnace muffle elder generation stacked on top, mounted on shared metal shell
It is interior.
6. a kind of efficiently pre- carbonization technique and equipment according to claim 1, it is characterized in that：First stage of reaction generates
High-concentration waste gas and tar, discharged by the waste discharge system of huge discharge；The low concentration gas and tar that second stage generates,
It is discharged by the waste discharge system of small displacement.
7. a kind of efficiently pre- carbonization technique and equipment according to claim 1, it is characterized in that：The row of first stage of reaction
The waste discharge system of useless system and second stage of reaction is there are two types of connection mode, first, two stage respective waste discharge systems, divide
It Jin Ru not air purification facility；Second is that after two stages respective waste discharge system merges, together into air purification facility.
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| CN201810010914.4A CN108103615B (en) | 2018-01-05 | 2018-01-05 | Efficient carbon fiber pre-carbonization process and equipment |
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| CN201810010914.4A CN108103615B (en) | 2018-01-05 | 2018-01-05 | Efficient carbon fiber pre-carbonization process and equipment |
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| CN108103615B CN108103615B (en) | 2023-03-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241482A (en) * | 2019-07-08 | 2019-09-17 | 广州赛奥碳纤维技术有限公司 | A method of producing the low temperature carbonization furnace and quick-replaceable furnace muffle of carbon fiber |
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| JPS58136834A (en) * | 1982-02-03 | 1983-08-15 | Mitsubishi Rayon Co Ltd | Production of carbon fiber of high performance |
| US4610860A (en) * | 1983-10-13 | 1986-09-09 | Hitco | Method and system for producing carbon fibers |
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| CN110241482B (en) * | 2019-07-08 | 2024-03-26 | 广州赛奥碳纤维技术有限公司 | Low-temperature carbonization furnace for producing carbon fibers and method for rapidly replacing muffle furnace chamber |
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| CN108103615B (en) | 2023-03-31 |
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Address after: 511356 Floor 2, No. 5 Huafeng Road, Yonghe Economic Zone, Guangzhou Economic and Technological Development Zone, Guangzhou, Guangdong Applicant after: Guangzhou sail Carbon Fiber Technology Co.,Ltd. Address before: 511356 Floor 2, No. 5 Huafeng Road, Yonghe Economic Zone, Guangzhou Economic and Technological Development Zone, Guangzhou, Guangdong Applicant before: ATA CARBON FIBER TECH. GUANGZHOU CO.,LTD. |
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