CN206970515U - 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
- Publication number
- CN206970515U CN206970515U CN201720884887.4U CN201720884887U CN206970515U CN 206970515 U CN206970515 U CN 206970515U CN 201720884887 U CN201720884887 U CN 201720884887U CN 206970515 U CN206970515 U CN 206970515U
- Authority
- CN
- China
- Prior art keywords
- kettle
- heat exchanger
- polyacrylonitrile
- cooling water
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Polymerisation Methods In General (AREA)
Abstract
The utility model provides a kind of reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization, including polymeric kettle and agitator, the interior chamber interior walls of mixing component and polymeric kettle are provided with teflon coatings, also 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 Matter Transfer that the material inlet of kettle external heat exchanger connects polymeric kettle bottom by kettle outer circulation pump exports, and the material outlet of kettle external heat exchanger connects the Matter Transfer import in the middle part of polymeric kettle by homogeneous mixing pump.The reaction unit can realize that the new material that adds quickly realizes homogenization with material in kettle, reaction heat can be removed in time, realize the stability contorting of reaction temperature, the problem of polyacrylonitrile (PAN) base carbon fibre continuous solution polymerization head kettle gels are serious can effectively be improved, extend the cycle of continuous polymerization steady running, improve polymerization stoste quality, and then improve carbon fiber quality.
Description
Technical field
It the utility model is related to a kind of reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization.
Background technology
Carbon fiber has high temperature resistant, corrosion-resistant, thermal coefficient of expansion is small, good stability of the dimension, high specific strength, high ratio modulus etc.
Feature, it is a kind of preferably functional material and structural material, is widely used in Aero-Space, the energy, traffic, electronics, building work
The field 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 acrylonitrile（AN）With comonomer carry out radical polymerization, and after through spinning,
Pre-oxidation, carbonization are prepared.Polyacrylonitrile using DMSO as solvent（PAN）Synthesizer is divided into continuous polymerization and batchwise polymerization
Two kinds of forms.Continuous polymerization is simple to operate, reaction relaxes, stably, fluctuation is small, be easily controlled, polymer molecular weight distribution is made
It is narrower, 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 produces, but it is fast before polymerisation 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, is fluctuated between batch big.Continuous polymerization head kettle gel problems are unavoidable, if
If can improve well, make continuous polymerization without obvious gel state steady running more than 6 months, then the advantage of continuous polymerization will
Much larger than batchwise polymerization, turn into polyacrylonitrile（PAN）The preferred polymerized form of base carbon fibre.
Above mentioned problem should be given in the reaction unit design process of polyacrylonitrile-based carbon fibre continuous solution polymerization
Consider and solve the problems, such as.
Utility model content
The reaction unit that the purpose of this utility model is to provide a kind of polyacrylonitrile-based carbon fibre continuous solution polymerization solves
First kettle gelatin phenomenon present in prior art is than more serious, the problem of seriously restricting the cycle continuously run.
Technical solution of the present utility model is：
A kind of reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization, including polymeric kettle and agitator, polymeric kettle
Top be provided with discharging opening, agitator includes motor, reduction box and mixing component, and motor and reduction box are located at the top of polymeric kettle
Portion, mixing component are located at the interior interior of polymeric kettle, and the interior chamber interior walls of mixing component and polymeric kettle are provided with teflon coatings, in addition to
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 connects the first cooling water inlet pipe,
The opposite side of cooling jacket connects the first cooling water outlet pipe, and the cooling water of the second cooling water inlet pipe connection kettle external heat exchanger enters
Mouthful, the coolant outlet of kettle external heat exchanger connects the second cooling water outlet pipe, and the inwall of kettle external circulation line applies provided with Teflon
Layer, kettle external circulation line include the first pipeline, the second pipeline, the 3rd pipeline and the 4th pipeline, the material inlet of kettle external heat exchanger
The Matter Transfer outlet of the second pipeline, the first pipeline of kettle outer circulation pump, connection polymeric kettle bottom is passed sequentially through, kettle external heat exchanger
Material outlet passes sequentially through the 3rd 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 coatings or PTFE coatings, the coating thickness of teflon coatings for 100 ~
250um。
Further, agitator 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 provided with thermometric transmitter and pressure transducer.
Further, the use process of the reaction unit of the polyacrylonitrile-based carbon fibre continuous solution polymerization is specially：Need
The mixed monomer solution prepared, it is added continuously in homogeneous mixing pump by liquid import, is come with the conveying of kettle outer circulation pump
Material is quickly well mixed in homogeneous mixing pump, then enters polymeric kettle by Matter Transfer import again, the thing in polymeric kettle
Material is continuously discharged from kettle ejection material mouth；Wherein, polymeric kettle polymerisation liberated heat and agitator stirring caused by heat lead to
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 utility model are：The reaction unit of this kind of polyacrylonitrile-based carbon fibre continuous solution polymerization, lead to
Cross and solve, into polymeric kettle material concentration and the inhomogenous problem of temperature, to effectively improve the difference of micro- reaction environment, and pass through
Teflon coatings are set, so as to ensure that polymeric kettle inner gel is seldom, existing continuous polymerization unit head kettles can be improved and coagulated
Glue is serious, the problem of short about 40 days or so service cycle of continuous-stable, solves thoroughly clean after stainless steel polymeric kettle scabs
The problem of clean.It is final to realize that polyacrylonitrile (PAN) continuous solution polymerization operates more than 6 months without gel state continuous-stable, be
Production high-quality, high performance polyacrylonitrile-based carbon fibre provide safeguard.
Brief description of the drawings
Fig. 1 is the structural representation of the reaction unit of the utility model embodiment polyacrylonitrile-based carbon fibre continuous solution polymerization
Figure；
Wherein：1- polymeric kettles, 2- agitators, 3- kettle outer circulation pumps, 4- kettle external heat exchangers, 5- homogeneous mixing pumps, 6- Teflons
Imperial coating, 7- liquid-inlets, 8- discharging openings, 9- thermometric transmitters, 10- cooling jackets, the cooling water inlet pipes of 11- first, 12-
Two cooling water inlet pipes, the cooling water outlet pipes of 13- first, the cooling water outlet pipes of 14- second, 15- pressure transducers, 16- first
Pipeline, the pipelines of 17- second, the pipelines of 18- the 3rd, the pipelines of 19- the 4th.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with the accompanying drawings.
Embodiment
A kind of reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization, including polymeric kettle 1 and agitator 2, polymerization
The top of kettle 1 is provided with discharging opening 8, and agitator 2 includes motor, reduction box and mixing component, and motor and reduction box are located at polymeric kettle 1
Top, mixing component is located at the interior interior of polymeric kettle 1, and the interior chamber interior walls of mixing component and polymeric kettle 1 are provided with teflon coatings
Followed outside 6, in addition to homogeneous mixing pump 5, the first cooling water inlet pipe 11, the second cooling water inlet pipe 12, kettle external heat exchanger 4, kettle
Endless tube road and kettle outer circulation pump 3, polymeric kettle 1 are externally provided with the cooling jacket 10 passed through for cooling water, the side of cooling jacket 10
The first cooling water inlet pipe 11 is connected, the opposite side of cooling jacket 10 connects the first cooling water outlet pipe 13, and the second cooling water enters
Water pipe 12 connects the cooling water inlet of kettle external heat exchanger 4, and the coolant outlet of kettle external heat exchanger 4 connects the second cooling water outlet pipe
14, the inwall of kettle external circulation line is provided 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, the Matter Transfer outlet of connection polymeric kettle 1 bottom, the material outlet of kettle external heat exchanger 4 pass sequentially through the 3rd pipeline 18,
Homogeneous mixing pump 5, the Matter Transfer import at the middle part of the 4th pipeline 19 connection polymeric kettle 1, 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 the material concentration of polymeric kettle 1
With the inhomogenous problem of temperature, the difference of micro- reaction environment is effectively improved, and by setting teflon coatings 6, so as to
Enough ensure that the inner gel of polymeric kettle 1 is seldom, it is serious to improve existing continuous polymerization unit head kettle gels, continuous-stable operating week
The problem of short about 40 days or so phase, solve the problems, such as that stainless steel polymeric kettle 1 can not be cleaned up thoroughly after scabbing.Final realize is gathered
Acrylonitrile PAN continuous solution polymerizations operate more than 6 months without gel state continuous-stable, for production high-quality, high performance poly-
Acrylonitrile base carbon fiber provides safeguard.
Embodiment solves the new material that adds and quickly realizes that the scheme of homogenization is with material in kettle：Homogeneous mixing pump 5 has
A, the import of two kinds of material charging apertures of B, i.e. liquid-inlet 7 with connecting kettle external heat exchanger 4, charging homogeneous mixing pump 5 can be realized viscous
Degree and flow difference compared with two strands of materials quickly realize homogenization, efficiently solve into the material concentration of polymeric kettle 1 and temperature not
The problem of homogeneous, the difference of micro- reaction environment is effectively improved, have very big side to improving the first kettle gel problem of polymeric kettle 1
Help.
The multi-gear homogeneous mixing pump 5 of variable ratio frequency changer speed governing can be selected in embodiment, and the rotating speed of homogeneous mixing pump 5 is in 100 ~ 500rpm
Between, the material that newly adds enters pump chamber from the two entrances of homogeneous mixing pump 5 respectively with the material that kettle outer circulation is beaten, in pump
Intracavitary is engaged by Double-gear or multi-gear, can realize within several seconds the homogeneous of material concentration and temperature in zero point, can be effective
Improve because concentration and temperature difference cause in kettle and the problem of charge door gel are serious.
In embodiment, the inner surface of the contacting material of polymeric kettle 1 has all carried out the spray treatment of teflon coatings 6, and Teflon applies
6 material of layer are PFA or PTFE, and coating thickness is 100 ~ 250um, for preventing from forming gel in kettle after material sticks.Agitator 2
The outer surface of contacting material has all carried out the spray treatment of teflon coatings 6, and the material of teflon coatings 6 is PFA or PTFE, and spraying is thick
Spend for 100 ~ 250um, for preventing from forming gel in kettle after material sticks.
Embodiment solves polymeric kettle 1 and scabs and do not wash clean clearly specially：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 one is that teflon coatings 6 itself have not
Sticky energy, compared to the adhesion that stainless steel mirror polishing is less prone to material；Second, use 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 being scabbed rather than stainless steel
Method thoroughly cleans up, and after driving again, kettle wall can be more prone to gel.
Embodiment solution agitator 2 easily produces gel and the solution of difficult cleaning is：Agitator 2 employs shaftless
The double helical ribbon agitators 2 of frame, both solved the problems, such as intermediate agitation axle because linear velocity is relatively slow easily to produce gel, also enhanced
The mixed effect of material in kettle；All surfaces contacted with material of agitator 2 have been carried out with polymeric kettle 1 on the basis of stainless steel
The same spraying teflon non-stick processing, has reached same and has solved the problems, such as that the wall surface of polymeric kettle 1 easily generates gel and difficult cleaning one
The effect of sample.Agitator 2 is using the double helical ribbon agitators 2 of shaftless frame, and suitable for the viscous material of height, centre is shaftless to be solved well
Because caused by intermediate agitation axial velocity is small material lagging formed gel the problem of, agitator 2 is furnished with reduction box and variable-frequency electric
Machine, its rotating speed can be adjusted immediately as needed in control room.
Kettle external heat exchanger 4 uses wide-runner plate heat exchanger, is imitated first, plate type 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, plate type heat exchanger exchanges heat
The main reason for efficiency high 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 its width of flow path is 8 ~ 10mm,
The material of 300poise viscosity can be applied to, 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, its 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 open and inspect.
Embodiment solves the solution that kettle external circulation line and heat exchanger produce gel and be difficult to clear up and is：Kettle follows outside
Endless tube road selects suitable caliber, on the premise of process conditions are met, reduces as much as possible, while properly increases internal circulating load,
The flow velocity of kettle outer circulation material is kept to be not less than 0.6m/s.The processing of spraying teflon non-stick has also been carried out to pipeloop in addition,
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 exports for Matter Transfer, and centre is Matter Transfer import, and fresh material also exists
This enters kettle, and kettle top is the discharging opening 8 of material.Polymeric kettle 1 is provided with thermometric transmitter 9 and pressure transducer 15.
The use process of the reaction unit of the polyacrylonitrile-based carbon fibre continuous solution polymerization is specially：What need to be prepared is mixed
Monomer solution is closed, is added continuously to by liquid import in homogeneous mixing pump 5, the material come with the conveying of kettle outer circulation pump 3 is equal
Quickly it is well 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
Ejection material mouth 8 is continuously discharged；Wherein, the polymerisation liberated heat of polymeric kettle 1 and agitator 2 stir caused by heat pass through it is 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, new addition material and thing in kettle can be realized
Material is quick to realize homogenization, can remove reaction heat in time, realize the stability contorting of reaction temperature, can effectively improve poly-
The problem of acrylonitrile PAN base carbon fibre continuous solution polymerization head kettle gels are serious, extend the cycle of continuous polymerization steady running, change
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, carry out verification experimental verification process such as
Under：
The first step：Device is driven, and the monomer and initiator solution for accounting for kettle product 1/3 ~ 1/2 are first added in polymeric kettle 1, complete
Turn on agitator 2 and kettle outer circulation pump 3 afterwards, draw steam and start kettle temperature rising to 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, during keep kettle temperature stable, treat in kettle
After material viscosity reaches expectation target, homogeneous mixing pump 5 is opened, recovers monomer and initiator solution charging, it is continuous always afterwards
Charging, kettle temperature is adjusted according to material viscosity change in kettle in time.After first kettle enter it is full after, material naturally from the overflow of kettle top to two kettles,
So far first kettle drives to terminate, and initial stage needs adjustment kettle temperature it is reached poised state as early as possible, keeps stable operation simultaneously to record
The time continuously run.
Second step：On-line monitoring gel situation, by monitor circulating-pump outlet pressure and rear road filter pressure difference change come
Supervising device inner gel situation, if pressure and pressure difference all keep constant, kettle inner gel in order, if all occurred continuous
Up-trend, then illustrate that kettle inner gel amount has begun to increase.
3rd step：Parking checking device inner gel situation, when continuous rise flex point occurs in above-mentioned parameter to be monitored, that is, do
Parking arrangements, stop polymeric kettle 1 and feed, stoppage in transit homogeneous mixing pump 5, material in kettle is emptied.Before the cleaning of the solubilizer of polymeric kettle 1,
The manhole of polymeric kettle 1, kettle external circulation line and plate type 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 result of the test of embodiment such as following table
It can be seen that by upper table result of the test：The reaction dress of the polyacrylonitrile-based carbon fibre continuous solution polymerization of embodiment
Put, can realize that polyacrylonitrile (PAN) continuous solution polymerization operates more than 6 months without gel state continuous-stable, can ensure to gather
It is seldom to close the inner gel of kettle 1, can improve that existing continuous polymerization unit head kettle gels are serious, and continuous-stable is short by about 30 service cycle
The problem of it or so.
Claims (5)
1. a kind of reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization, including polymeric kettle and agitator, polymeric kettle
Top is provided with discharging opening, and agitator includes motor, reduction box and mixing component, and motor and reduction box are located at the top of polymeric kettle,
Mixing component is located at the interior interior of polymeric kettle, it is characterised in that：The interior chamber interior walls of mixing component and polymeric kettle apply provided with Teflon
Layer, in addition to homogeneous mixing pump, the first cooling water inlet pipe, the second cooling water inlet pipe, kettle external heat exchanger, kettle external circulation line
With kettle outer circulation pump, polymeric kettle is externally provided with the cooling jacket passed through for cooling water, the cooling of side connection first of cooling jacket
Water water inlet pipe, the opposite side of cooling jacket connect the first cooling water outlet pipe, the second cooling water inlet pipe connection kettle external heat exchanger
Cooling water inlet, the coolant outlet of kettle external heat exchanger connects the second cooling water outlet pipe, and the inwall of kettle external circulation line is set
There are teflon coatings, kettle external circulation line includes the first pipeline, the second pipeline, the 3rd pipeline and the 4th pipeline, kettle external heat exchanger
Material inlet pass sequentially through the Matter Transfer outlet of the second pipeline, the first pipeline of kettle outer circulation pump, connection polymeric kettle bottom, kettle
The material outlet of external heat exchanger passes sequentially through the 3rd pipeline, homogeneous mixing pump, the material in the middle part of the 4th pipeline connection polymeric kettle and followed
Ring import, homogeneous mixing pump are additionally provided with liquid-inlet.
2. the reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization as claimed in claim 1, it is characterised in that：Teflon
Imperial coating uses PFA coatings or PTFE coatings, and the coating thickness of teflon coatings is 100 ~ 250um.
3. the reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization as claimed in claim 1, it is characterised in that：Stirring
Device is using the double helical ribbon agitators of shaftless frame.
4. the reaction unit of the polyacrylonitrile-based carbon fibre continuous solution polymerization as described in claim any one of 1-3, its feature
It is：Kettle external heat exchanger uses wide-runner plate heat exchanger.
5. the reaction unit of the polyacrylonitrile-based carbon fibre continuous solution polymerization as described in claim any one of 1-3, its feature
It is：Polymeric kettle is provided with thermometric transmitter and pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720884887.4U CN206970515U (en) | 2017-07-20 | 2017-07-20 | The reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720884887.4U CN206970515U (en) | 2017-07-20 | 2017-07-20 | The reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206970515U true CN206970515U (en) | 2018-02-06 |
Family
ID=61403007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720884887.4U Active CN206970515U (en) | 2017-07-20 | 2017-07-20 | The reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206970515U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107245117A (en) * | 2017-07-20 | 2017-10-13 | 江苏恒神股份有限公司 | The reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization |
| CN113861336A (en) * | 2021-10-19 | 2021-12-31 | 江苏恒神股份有限公司 | Inhibition method for continuous polymerization gel of acrylonitrile |
-
2017
- 2017-07-20 CN CN201720884887.4U patent/CN206970515U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107245117A (en) * | 2017-07-20 | 2017-10-13 | 江苏恒神股份有限公司 | The reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization |
| CN107245117B (en) * | 2017-07-20 | 2019-03-05 | 江苏恒神股份有限公司 | The reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization |
| CN113861336A (en) * | 2021-10-19 | 2021-12-31 | 江苏恒神股份有限公司 | Inhibition method for continuous polymerization gel of acrylonitrile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206970515U (en) | The reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization | |
| JP7177134B2 (en) | Reactor and continuous polymerization process | |
| CN203990638U (en) | Cathode electrophoresis dope reaction unit | |
| CN217189594U (en) | PVDF polymeric kettle | |
| CN107245117B (en) | The reaction unit of polyacrylonitrile-based carbon fibre continuous solution polymerization | |
| CN207838750U (en) | Glue agglomeration nozzle | |
| CN105714391B (en) | Polylactic acid bi-component composite fiber spinning technique | |
| CN105803565B (en) | PLA delustering fibre direct fabrics production technology | |
| CN208406789U (en) | A kind of feeding emulsifying systems on mildy wash production line | |
| JP2002301350A (en) | Agitator and polymer production process | |
| CN102091572A (en) | Polymer reactor for synthesizing rubber | |
| CN208771402U (en) | Spinning sizing agent temperature control zone road polymerizing reactor | |
| CN206661196U (en) | A kind of vertical polymerization reaction kettle | |
| CN209663066U (en) | A combined stirring paddle | |
| CN107670601B (en) | A kind of chemical mechanical system with gate-type agitating paddle reaction kettle | |
| CN211886852U (en) | Continuous production equipment for free radical polymerization | |
| CN208711721U (en) | Highly effective reaction kettle | |
| CN207481195U (en) | A kind of PE Gas Pipes production cooler bin | |
| CN101928368A (en) | Polymerization method and polymerization device for polyacrylonitrile spinning dope | |
| CN219559622U (en) | Stirring reaction kettle for poly (p-phenylene benzobisoxazole) -polyphosphoric acid system | |
| CN2885895Y (en) | Integrated device for preparing poly-p-phenylenebenzobisoxazole fibre | |
| CN221212818U (en) | Resin composite material pultrusion device | |
| TW202126707A (en) | Agitator for batch suspension polymerization of vinyl chloride resin, and batch suspension polymerization method and batch suspension polymerization reactor using the same | |
| CN215389303U (en) | Polymeric kettle for polypropylene film production | |
| CN220047799U (en) | Coating stirring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |