CN107245117B - The reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization - Google Patents
The reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization Download PDFInfo
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- CN107245117B CN107245117B CN201710596983.3A CN201710596983A CN107245117B CN 107245117 B CN107245117 B CN 107245117B CN 201710596983 A CN201710596983 A CN 201710596983A CN 107245117 B CN107245117 B CN 107245117B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/01—Processes of polymerisation characterised by special features of the polymerisation apparatus used
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F120/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F120/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F120/42—Nitriles
- C08F120/44—Acrylonitrile
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/04—Polymerisation in solution
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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
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- General Chemical & Material Sciences (AREA)
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- Polymerisation Methods In General (AREA)
Abstract
The present invention provides a kind of reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization, including polymeric kettle and blender, the interior chamber interior walls of mixing component and polymeric kettle are equipped with teflon coatings, it further include homogeneous mixing pump, the first cooling water inlet pipe, the second cooling water inlet pipe, kettle external heat exchanger and kettle outer circulation pump, the material inlet of kettle external heat exchanger is exported by the Matter Transfer of kettle outer circulation pump connection polymeric kettle bottom, and the material outlet of kettle external heat exchanger is connected to the Matter Transfer import in the middle part of polymeric kettle by homogeneous mixing pump.The reaction unit can be realized material in new addition material and kettle and fast implement homogenization, reaction heat can be removed in time, realize the stability contorting of reaction temperature, the serious problem of polyacrylonitrile (PAN) base carbon fibre continuous solution polymerization head kettle gel can be effectively improved, extend the period of continuous polymerization steady running, improve polymerization stoste quality, and then improves carbon fiber quality.
Description
Technical field
The present invention relates to a kind of reaction units of polyacrylonitrile-based carbon fibre continuous solution polymerization.
Background technique
Carbon fiber has that high temperature resistant, corrosion-resistant, thermal expansion coefficient is small, good stability of the dimension, high specific strength, high ratio modulus etc.
Feature is a kind of ideal functional material and structural material, is widely used in aerospace, the energy, traffic, electronics, building work
The fields such as journey and Leisure Sport.The carbon fiber overwhelming majority produced and sold in the world at present is all polyacrylonitrile (PAN) base carbon
Fiber.
Polyacrylonitrile-radical (PAN) carbon fiber is that acrylonitrile (AN) and comonomer carry out free radical polymerization, and after through spinning,
Pre-oxidation, carbonization are prepared.It is divided into continuous polymerization and batchwise polymerization by polyacrylonitrile (PAN) synthesizer of solvent of DMSO
Two kinds of forms.Continuous polymerization is easy to operate, reaction mitigates, stablize, fluctuate it is small, be easy to control, polymer molecular weight distribution be made
It is relatively narrow, it is easier to accomplish scale production, but general first kettle gelatin phenomenon can seriously restrict the week continuously run than more serious
Phase.Supply index is readily incorporated gel impurity, influences precursor and carbon filament quality；The maximum advantage of batchwise polymerization be in kettle substantially without
Gel generates, but it is fast before polymerization reaction after slow difference it is big, it is obvious to automatically speed up phenomenon, cause polymer molecular weight distribution compared with
Greatly, operating process is complicated, causes repeatability poor, fluctuates between batch big.Continuous polymerization head kettle gel problem is unavoidable, if
If can improve well, make continuous polymerization without obvious gel state steady running 6 months or more, then the advantage of continuous polymerization will
Much larger than batchwise polymerization, become the polymerized form of polyacrylonitrile (PAN) base carbon fibre first choice.
The above problem should be given in the reaction unit design process of polyacrylonitrile-based carbon fibre continuous solution polymerization
Consider the problems of and solves.
Summary of the invention
The object of the present invention is to provide a kind of solution of the reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization is existing
Head kettle gelatin phenomenon present in technology is than more serious, the problem of seriously restricting the period continuously run.
The technical solution of the invention is as follows:
A kind of reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization, including polymeric kettle and blender, polymeric kettle
Top be equipped with discharge port, blender includes motor, reduction gearbox and mixing component, and motor and reduction gearbox are set to the top of polymeric kettle
Portion, mixing component are set to the interior interior of polymeric kettle, and the interior chamber interior walls of mixing component and polymeric kettle are equipped with teflon coatings, further include
It is followed outside homogeneous mixing pump, the first cooling water inlet pipe, the second cooling water inlet pipe, kettle external heat exchanger, kettle external circulation line and kettle
Ring pump, polymeric kettle are externally provided with the cooling jacket passed through for cooling water, and the side of cooling jacket is connected to the first cooling water inlet pipe,
The other side of cooling jacket is connected to the first cooling water outlet pipe, the second cooling water inlet pipe be connected to the cooling water of kettle external heat exchanger into
Mouthful, the cooling water outlet of kettle external heat exchanger is connected to the second cooling water outlet pipe, and the inner wall of kettle external circulation line is applied equipped with Teflon
Layer, kettle external circulation line include the first pipeline, the second pipeline, third pipeline and the 4th pipeline, the material inlet of kettle external heat exchanger
The second pipeline, the first pipeline of kettle outer circulation pump, the Matter Transfer outlet for being connected to polymeric kettle bottom are passed sequentially through, kettle external heat exchanger
Material outlet passes sequentially through third pipeline, homogeneous mixing pump, the Matter Transfer import in the middle part of the 4th pipeline connection polymeric kettle, homogeneous
Mixing pump is additionally provided with liquid-inlet.
Further, teflon coatings use PFA coating or PTFE coating, and the coating thickness of teflon coatings is 100 ~
250um。
Further, blender is using the double helical ribbon agitators of shaftless frame.
Further, kettle external heat exchanger uses wide-runner plate heat exchanger.
Further, polymeric kettle is equipped with thermometric transmitter and pressure transducer.
Further, the use process of the reaction unit of the polyacrylonitrile-based carbon fibre continuous solution polymerization specifically: need
Prepared mixed monomer solution is added continuously in homogeneous mixing pump by liquid import, is come with kettle outer circulation pump conveying
Material is quickly uniformly mixed in homogeneous mixing pump, then enters polymeric kettle by Matter Transfer import again, the object in polymeric kettle
Material is continuously discharged from kettle top discharge port；Wherein, the heat that the heat and blender stirring that polymeric kettle polymerization reaction is released generate is logical
The cooling water heat exchange for crossing the cooling jacket and kettle external heat exchanger of polymeric kettle is taken away.
The beneficial effects of the present invention are: the reaction unit of this kind of polyacrylonitrile-based carbon fibre continuous solution polymerization, passes through solution
Problem certainly inhomogenous into polymeric kettle material concentration and temperature, effectively improves the difference of micro- reaction environment, and passes through setting
It is tight can to improve existing continuous polymerization unit head kettle gel so as to guarantee that polymeric kettle inner gel is seldom for teflon coatings
The problem of weight, short about 40 days or so operation cycle of continuous-stable, solves thoroughly clean up after stainless steel polymeric kettle scabs
The problem of.It is final to realize that polyacrylonitrile (PAN) continuous solution polymerization operates 6 months without gel state continuous-stable, for production
High-quality, high performance polyacrylonitrile-based carbon fibre provide safeguard.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization of the embodiment of the present invention；
Wherein: 1- polymeric kettle, 2- blender, 3- kettle outer circulation pump, 4- kettle external heat exchanger, 5- homogeneous mixing pump, 6- Teflon
Imperial coating, 7- liquid-inlet, 8- discharge port, 9- thermometric transmitter, 10- cooling jacket, the first cooling water inlet pipe of 11-, 12-
Two cooling water inlet pipes, the first cooling water outlet pipe of 13-, the second cooling water outlet pipe of 14-, 15- pressure transducer, 16- first
Pipeline, the second pipeline of 17-, 18- third pipeline, the 4th pipeline of 19-.
Specific embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
Embodiment
A kind of reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization, including polymeric kettle 1 and blender 2, polymerization
The top of kettle 1 is equipped with discharge port 8, and blender 2 includes motor, reduction gearbox and mixing component, and motor and reduction gearbox are set to polymeric kettle 1
Top, mixing component is set to the interior interior of polymeric kettle 1, and the interior chamber interior walls of mixing component and polymeric kettle 1 are equipped with teflon coatings
6, further include homogeneous mixing pump 5, the first cooling water inlet pipe 11, the second cooling water inlet pipe 12, kettle external heat exchanger 4, follow outside kettle
Endless tube road and kettle outer circulation pump 3, polymeric kettle 1 is externally provided with the cooling jacket 10 passed through for cooling water, the side of cooling jacket 10
Be connected to the first cooling water inlet pipe 11, the other side of cooling jacket 10 is connected to the first cooling water outlet pipe 13, the second cooling water into
Water pipe 12 is connected to the cooling water inlet of kettle external heat exchanger 4, and the cooling water outlet of kettle external heat exchanger 4 is connected to the second cooling water outlet pipe
14, the inner wall of kettle external circulation line is equipped with teflon coatings 6, and kettle external circulation line includes the first pipeline 16, the second pipeline 17, the
Three pipelines 18 and the 4th pipeline 19, the material inlet of kettle external heat exchanger 4 pass sequentially through the second pipeline 17, kettle outer circulation pump 3 first
Pipeline 16, be connected to 1 bottom of polymeric kettle Matter Transfer outlet, the material outlet of kettle external heat exchanger 4 pass sequentially through third pipeline 18,
The Matter Transfer import of homogeneous mixing pump 5,1 middle part of the 4th pipeline 19 connection polymeric kettle, homogeneous mixing pump 5 are additionally provided with liquid-inlet
7。
The reaction unit of this kind of polyacrylonitrile-based carbon fibre continuous solution polymerization, by solving into 1 material concentration of polymeric kettle
The inhomogenous problem with temperature effectively improves the difference of micro- reaction environment, and by the way that teflon coatings 6 are arranged, so as to
Enough guarantee that 1 inner gel of polymeric kettle is seldom, it is serious to improve existing continuous polymerization unit head kettle gel, continuous-stable operating week
Phase short about 40 days or so the problem of, solve the problems, such as thoroughly clean up after stainless steel polymeric kettle 1 scabs.Final realize is gathered
Acrylonitrile PAN continuous solution polymerization operates 6 months or more without gel state continuous-stable, for production high-quality, high performance poly-
Acrylonitrile base carbon fiber provides safeguard.
Embodiment solves the scheme that new addition material fast implements homogenization with material in kettle and is: homogeneous mixing pump 5 has
A, two kinds of material feed inlets of B, i.e. liquid-inlet 7 are able to achieve viscous with the import for being connected to kettle external heat exchanger 4, charging homogeneous mixing pump 5
Degree and flow difference compared with two strands of materials fast implement homogenization, efficiently solve into 1 material concentration of polymeric kettle and temperature not
Uniform problem effectively improves the difference of micro- reaction environment, has very big side to the first kettle gel problem of polymeric kettle 1 is improved
It helps.
The multi-gear homogeneous mixing pump 5 of variable ratio frequency changer speed regulation can be selected in embodiment, and 5 revolving speed of homogeneous mixing pump is in 100 ~ 500rpm
Between, the material that the material and kettle outer circulation being newly added are beaten enters pump chamber from 5 two entrances of homogeneous mixing pump respectively, is pumping
It is intracavitary to be engaged by Double-gear or multi-gear, the uniform of material concentrations and temperature can be realized at zero point several seconds, it can be effective
It improves because concentration and temperature difference cause in kettle and the serious problem of feed opening gel.
In embodiment, the inner surface of 1 contacting material of polymeric kettle has all carried out 6 spray treatment of teflon coatings, and Teflon applies
6 material of layer are PFA or PTFE, and coating thickness is 100 ~ 250um, form gel in kettle after material sticks for preventing.Blender 2
The outer surface of contacting material has all carried out 6 spray treatment of teflon coatings, and 6 material of teflon coatings is PFA or PTFE, and spraying is thick
Degree is 100 ~ 250um, forms gel in kettle after material sticks for preventing.
Embodiment solves polymeric kettle 1 and scabs and do not wash clean clearly specifically: all surfaces contacted with material are in original in kettle
Come on the basis of stainless steel to have carried out the not viscous processing of spraying teflon coatings 6.Its reason is first is that teflon coatings 6 itself have not
Sticky energy, compared to the adherency that stainless steel mirror polishing is less prone to material；Second is that using electrostatic spraying, coating with it is electronegative
PAN polymer repels each other, and can more efficiently prevent from attachment of polymers in equipment surface.After Teflon spray treatment, even if
There are a small amount of material sticks, can also easily be washed down very much with solvent, only by cleaning basic nothing after scabbing rather than stainless steel
Method thoroughly cleans up, and after driving again, kettle wall can be more prone to produce gel.
Embodiment solves the solution that blender 2 is easy to produce gel and hardly possible is cleared up and is: blender 2 uses shaftless
The double helical ribbon agitators 2 of frame, had both solved the problems, such as intermediate agitation axis because linear velocity is easy to produce gel more slowly, had also enhanced
The mixed effect of material in kettle；All surfaces contacted with material of blender 2 have carried out on the basis of stainless steel with polymeric kettle 1
The same spraying teflon non-stick processing has reached same and has solved the problems, such as that 1 wall surface of polymeric kettle is easy to generate gel and difficult cleaning one
The effect of sample.Blender 2 uses the double helical ribbon agitators 2 of shaftless frame, is suitable for high viscous material, centre is shaftless to be well solved
Because intermediate agitation axial velocity it is small caused by material lagging formed gel the problem of, blender 2 be furnished with reduction gearbox and variable-frequency electric
Machine can adjust its revolving speed in control room immediately as needed.
Kettle external heat exchanger 4 uses wide-runner plate heat exchanger, imitates first is that plate heat exchanger exchanges heat with respect to tubular heat exchanger
Rate is higher, can use smaller heat exchange area, and then improves flow velocity of the material in heat exchanger；Second is that plate heat exchanger exchanges heat
The main reason for high-efficient is that material is in turbulence state in runner, and material is more not easy to be detained under turbulence state, also effectively
Ground improves the formation of heat exchanger inner gel.Kettle external heat exchanger 4 is wide-runner plate heat exchanger, and width of flow path is 8 ~ 10mm,
It can be suitable for the material of 300poise viscosity, can adapt to high viscous material-heat-exchanging；Design pressure is 10bar；With uniqueness
Anti- flushing and anti-leak gasket design；Compared to tubular heat exchanger, heat exchange efficiency is high, and material turbulivity is big, can be very
Improve the gel problem resulted in because material flow is excessively slow well, and conveniently opens and inspect.
Embodiment solves kettle external circulation line and heat exchanger generates gel and the solution for being difficult to clear up is: following outside kettle
Endless tube road selects suitable caliber to reduce as much as possible under the premise of meeting process conditions, while properly increasing internal circulating load,
The flow velocity of kettle outer circulation material is kept to be not less than 0.6m/s.In addition the processing of spraying teflon non-stick has also been carried out to pipeloop,
Above-mentioned measure substantially improves kettle external circulation line because material is serious in pipeline lining stream, is detained forms gel blocking for a long time
The problem of pipeline.
In embodiment, the bottom of polymeric kettle 1 is Matter Transfer outlet, and centre is Matter Transfer import, and fresh material also exists
, into kettle, kettle top is the discharge port 8 of material for this.Polymeric kettle 1 is equipped with thermometric transmitter 9 and pressure transducer 15.
The use process of the reaction unit of the polyacrylonitrile-based carbon fibre continuous solution polymerization specifically: need prepared mixed
Monomer solution is closed, is added continuously in homogeneous mixing pump 5 by liquid import, the material come with 3 conveying of kettle outer circulation pump is equal
It is quickly uniformly mixed in matter mixing pump 5, polymeric kettle 1 is then entered by Matter Transfer import again, the material in polymeric kettle 1 is from kettle
Material mouth 8 is ejected continuously to be discharged；Wherein, the heat that the heat and the stirring of blender 2 that 1 polymerization reaction of polymeric kettle is released generate passes through poly-
The cooling water heat exchange for closing the cooling jacket 10 and kettle external heat exchanger 4 of kettle 1 is taken away.
The reaction unit of this kind of polyacrylonitrile-based carbon fibre continuous solution polymerization can be realized object in new addition material and kettle
Material fast implements homogenization, can remove reaction heat in time, realize the stability contorting of reaction temperature, can effectively improve poly-
The serious problem of acrylonitrile PAN base carbon fibre continuous solution polymerization head kettle gel extends the period of continuous polymerization steady running, changes
Kind polymerization stoste quality, and then improve carbon fiber quality.
A kind of reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization of embodiment carries out verification experimental verification process such as
Under:
Step 1: device is driven, the monomer and initiator solution for accounting for about autoclave body product 1/3 ~ 1/2 are first added in polymeric kettle 1, it is complete
Turn on agitator 2 and kettle outer circulation pump 3 afterwards, draw steam and start to rise to kettle temperature into 58 ~ 65 DEG C to jacket water (J.W.), material is initiated in kettle
After reaction, steam off, device switchs to cool down by heating, 3 ~ 5h of intermittent polyreaction, keeps kettle temperature to stablize in the process, in kettle
After material viscosity reaches expectation target, homogeneous mixing pump 5 is opened, restores monomer and initiator solution charging, it is continuous always later
Charging adjusts kettle temperature according to material viscosity variation in kettle in time.After first kettle into after full, material naturally from kettle top overflow to two kettles,
So far first kettle driving terminates, and initial stage, which needs to adjust kettle temperature, makes it reach equilibrium state as early as possible, keeps stable operation and records
The time continuously run.
Step 2: on-line monitoring gel situation, by monitoring circulating-pump outlet pressure and rear road filter pressure difference variation come
Monitoring device inner gel situation, if pressure and pressure difference all remain unchanged, kettle inner gel in order, if all occurred continuous
Up-trend then illustrates that kettle inner gel amount has begun increase.
Step 3: parking checking device inner gel situation is done when continuous rise inflection point occurs in above-mentioned parameter to be monitored
Parking arrangements stop polymeric kettle 1 and feed, and stoppage in transit homogeneous mixing pump 5 empties material in kettle.Before the cleaning of 1 solubilizer of polymeric kettle,
1 manhole of polymeric kettle, kettle external circulation line and plate heat exchanger are opened and inspect, check gel situation.Device is from driving to stopping
Continuous operation time and open and inspect foundation of the gel situation as evaluating apparatus improvement.
The test result of embodiment such as following table
By upper watch test result it can be seen that the reaction of the polyacrylonitrile-based carbon fibre continuous solution polymerization of embodiment fills
It sets, can be realized polyacrylonitrile (PAN) continuous solution polymerization without the operating of gel state continuous-stable 6 months or more, can guarantee to gather
It is seldom to close 1 inner gel of kettle, can improve that existing continuous polymerization unit head kettle gel is serious, and continuous-stable is short by about 30 operation cycle
The problem of it or so.
Claims (2)
1. a kind of reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization, including polymeric kettle and blender, polymeric kettle
Top is equipped with discharge port, and blender includes motor, reduction gearbox and mixing component, and motor and reduction gearbox are set to the top of polymeric kettle,
Mixing component is set to the interior interior of polymeric kettle, it is characterised in that: blender is using the double helical ribbon agitators of shaftless frame, mixing component
Teflon coatings are equipped with the interior chamber interior walls of polymeric kettle, further include homogeneous mixing pump, the first cooling water inlet pipe, the second cooling water
Water inlet pipe, kettle external heat exchanger, kettle external circulation line and kettle outer circulation pump, polymeric kettle are externally provided with the cooling folder passed through for cooling water
Set, the side of cooling jacket are connected to the first cooling water inlet pipe, and the other side of cooling jacket is connected to the first cooling water outlet pipe, the
Two cooling water inlet pipes are connected to the cooling water inlet of kettle external heat exchanger, and the cooling water outlet of kettle external heat exchanger is connected to the second cooling water
Outlet pipe, the inner wall of kettle external circulation line are equipped with teflon coatings, and kettle external circulation line includes the first pipeline, the second pipeline, the
Three pipelines and the 4th pipeline, the material inlet of kettle external heat exchanger passes sequentially through the second pipeline, kettle outer circulation pumps the first pipeline, connection
The Matter Transfer of polymeric kettle bottom exports, and the material outlet of kettle external heat exchanger passes sequentially through third pipeline, homogeneous mixing pump, the 4th
Matter Transfer import in the middle part of pipeline connection polymeric kettle, homogeneous mixing pump are additionally provided with liquid-inlet, and kettle external heat exchanger is using wide stream
Road plate heat exchanger, polymeric kettle are equipped with thermometric transmitter and pressure transducer, the polyacrylonitrile-based carbon fibre continuous solution polymerization
Reaction unit use process specifically: need prepared mixed monomer solution, homogeneous be added continuously to by liquid import
In mixing pump, the material come with kettle outer circulation pump conveying is quickly uniformly mixed in homogeneous mixing pump, is then followed again by material
Ring import enters polymeric kettle, and the material in polymeric kettle is continuously discharged from kettle top discharge port；Wherein, polymeric kettle polymerization reaction is released
The heat that heat and blender stirring generate is taken away by the cooling water heat exchange of the cooling jacket and kettle external heat exchanger of polymeric kettle.
2. the reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization as described in claim 1, it is characterised in that: Teflon
Imperial coating uses PTFE coating, and the coating thickness of teflon coatings is 100 ~ 250um.
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| CN104984714A (en) * | 2015-07-23 | 2015-10-21 | 江苏恒神股份有限公司 | Production load adjustable reaction kettle |
| CN206970515U (en) * | 2017-07-20 | 2018-02-06 | 江苏恒神股份有限公司 | The reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization |
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|---|---|---|---|---|
| CN2522163Y (en) * | 2001-10-10 | 2002-11-27 | 潘兆金 | Out-pot circulation promoting material-heat-exchanging mixer |
| CN104151487A (en) * | 2014-07-10 | 2014-11-19 | 中国化学赛鼎宁波工程有限公司 | Water-phase suspension production system and method for acrylonitrile polymer for PNA carbon fiber precursor |
| CN104984714A (en) * | 2015-07-23 | 2015-10-21 | 江苏恒神股份有限公司 | Production load adjustable reaction kettle |
| CN206970515U (en) * | 2017-07-20 | 2018-02-06 | 江苏恒神股份有限公司 | The reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization |
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