CN207019522U - The temperature controlled device of stoste before a kind of carbon fibre precursor is spun - Google Patents
The temperature controlled device of stoste before a kind of carbon fibre precursor is spun Download PDFInfo
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- CN207019522U CN207019522U CN201720730520.7U CN201720730520U CN207019522U CN 207019522 U CN207019522 U CN 207019522U CN 201720730520 U CN201720730520 U CN 201720730520U CN 207019522 U CN207019522 U CN 207019522U
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Abstract
The utility model provides the temperature controlled device of stoste before a kind of carbon fibre precursor is spun, and the device includes static mixing heat exchanger, baffle heater, panel cooler；Also include：Electromagnetic pump, its entrance point are connected with the chuck of static mixing heat exchanger, and the port of export is connected with baffle heater, panel cooler；Three-way control valve, first end are connected with baffle heater, and the second end is connected with panel cooler, and the 3rd end is connected with static mixing heat exchanger；Controller, it is connected with three-way control valve, for adjusting the first end of three-way control valve and the flow at the second end according to preset temperature.The utility model can effectively control the temperature of stoste before spinning, improve the quality of carbon fibre precursor.
Description
Technical field
The utility model is related to carbon fiber production technical field, more particularly to a kind of carbon fibre precursor spin before stoste temperature control
The device of system.
Background technology
The solidification forming of precursor is one of most important process in carbon fiber production.And when stoste temperature influences spinneret before spinning
What the formation of as-spun fibre, the quality of precursor and drawing-off were wound is normally carried out.If the stage forms the defects of certain in precursor,
The heredity of structure causes final carbon fiber structural imperfection, performance to reduce.
During using sodium sulfocyanate (NaSCN) aqueous solution as the wet spinning of solvent, the dynamic viscosity of spinning solution
More sensitive to temperature, dynamic viscosity directly affects the spinnability of spinning solution, only under appropriate viscosities, just may be used
Continuous spinning can be carried out and obtain the carbon fibre precursor of function admirable.
Stoste temperature is too low, and dissolved adhesiveness increase, poor fluidity, spinning is difficult, broken end increase during drawing-off；Simultaneously as
Viscosity increases, and the increase of spinneret pressure, accelerates the deformation of spinneret, and fracture of wire increases, and spinnability reduces；Stoste temperature is too high, cuts
Shearing stress reduces, and the viscosity of spinning solution reduces, and stoste and the interfacial surface tension of spinneret reduce, and hair easily occurs for spinning solution
Thin broken is bad.
It can be seen that temperature directly affects the spinnability of spinning solution.Only under the appropriate temperature conditions, the company of being only possible to
Continue spinning and obtain the fiber of function admirable.
At present, stoste temperature is controlled by two level stoste cooler before spinning, the higher temperature stoste storage that polymerization conveying comes
In spinning workshop stoste storage tank, after discontinuous degassing, two level stoste cooler is pumped to by the conveying of two level stoste, carried out cold
But filter press is delivered to by filter press delivery pump after and carries out by-pass filtration, the stoste after filtering is pumped into candle type by three-level supercharging
Filter, spinning pump is delivered to after carrying out the higher secondary filtration of precision, then enters through oversintering filter three-stage filtration and spray
Silk head spinning.A length of 105 meters to the pipeline of measuring pump of secondary coolers.Stoste temperature is at 26.0~38.0 DEG C therebetween, fluctuate compared with
Greatly.
Utility model content
Feature and advantage of the present utility model partly state in the following description, or can be aobvious and easy from the description
See, or can be learnt by putting into practice the utility model.
To overcome problem of the prior art, the utility model provides the temperature controlled dress of stoste before a kind of carbon fibre precursor is spun
Put and its method, static mixing heat exchanger, baffle heater are connected with panel cooler by three-way control valve, pass through adjustment
The flow of three-way control valve, accurate temperature control is carried out, before improving cooler control spinning single in current production technology
The mode of stoste temperature, stoste temperature before accurate control is spun, the dynamic viscosity of stoste before stable spinning, reduce the disconnected of as-spun fibre
Silk number and lousiness amount.
Technical scheme is as follows used by the utility model solves above-mentioned technical problem：
According to one side of the present utility model, there is provided the temperature controlled device of stoste before a kind of carbon fibre precursor is spun, its
It is characterised by, including static mixing heat exchanger, baffle heater, panel cooler；Also include：
Electromagnetic pump, its entrance point are connected with the chuck of the static mixing heat exchanger, the port of export and the baffle heater,
Panel cooler is connected；
Three-way control valve, first end are connected with the baffle heater, and the second end is connected with the panel cooler, and the 3rd
End is connected with the static mixing heat exchanger；
Controller, it is connected with the three-way control valve, for adjusting the three-way control valve according to preset temperature
First end and the flow at the second end.
Alternatively, in addition to：
First cooling-water temperature sensor, between the static mixing heat exchanger and the electromagnetic pump；
Second cooling-water temperature sensor, between the three-way control valve and the static mixing heat exchanger.
Alternatively, the controller is additionally operable to receive the first temperature detection value of first cooling-water temperature sensor and described the
The second temperature detected value of two cooling-water temperature sensors, and the first end of the three-way control valve and the flow at the second end are adjusted accordingly.
Alternatively, the controller is additionally operable to receive the first temperature detection value of first cooling-water temperature sensor and described the
The second temperature detected value of two cooling-water temperature sensors, make institute if first temperature detection value is less than the second temperature detected value
The flow increase of the first end of three-way control valve is stated, is made if first temperature detection value is more than the second temperature detected value
The flow increase at the second end of the three-way control valve.
Alternatively, in addition to：
Low pressure steam inlet regulating valve, it is connected with the baffle heater；
Cooling water inlet regulating valve, it is connected with the panel cooler.
Alternatively, the controller is additionally operable to obtain the temperature detection value of the stoste via the static mixing heat exchanger,
And adjustment is compensated to the preset temperature accordingly.
According to other side of the present utility model, there is provided a kind of temperature controlled method of stoste before carbon fibre precursor is spun,
It is characterised in that it includes：
Start electromagnetic pump, the liquid in the chuck of static mixing heat exchanger is divided into two parts, and respectively via plate
It is re-introduced into after formula heater and panel cooler in the chuck of the static mixing heat exchanger；
According to preset temperature adjust three-way control valve, the first end of the three-way control valve, the second end, the 3rd end respectively with
Baffle heater, panel cooler, the chuck of static mixing heat exchanger are connected.
Alternatively, it is described to be included according to preset temperature regulation three-way control valve：
Obtain first temperature detection value of the liquid before the electromagnetic pump is entered；The liquid is obtained to enter
Second temperature detected value before the chuck of the static mixing heat exchanger；
The first end of the three-way control valve and the is adjusted according to first temperature detection value and second temperature detected value
The flow at two ends.
Alternatively, it is described to be included according to preset temperature regulation three-way control valve：
Obtain first temperature detection value of the liquid before the electromagnetic pump is entered；The liquid is obtained to enter
Second temperature detected value before the chuck of the static mixing heat exchanger；
Judge whether first temperature detection value is less than the second temperature detected value；
If so, then increase the flow of the first end of the three-way control valve；
If it is not, then increase the flow at the second end of the three-way control valve.
Alternatively, it is described to be included according to preset temperature regulation three-way control valve：
The temperature detection value of the stoste via the static mixing heat exchanger is obtained, and the preset temperature is carried out accordingly
Compensation adjustment.
The utility model provides the temperature controlled device of stoste before a kind of carbon fibre precursor is spun, always will folder with magnetic drive pump
Liquid in set plays circulation, and the jacket water (J.W.) of circulation is divided into two parts in the outlet of magnetic drive pump, and this two parts jacket water (J.W.) passes through respectively
Baffle heater and panel cooler, then converge at three-way control valve, and three-way control valve will pass through control according to preset temperature
Device control processed accurately controls the temperature of jacket water (J.W.) by heating the flow of water and cooling water, is then exchanged heat by static mixing
Device and stoste heat exchange, the accurate temperature for controlling stoste.
By reading specification, the feature of these technical schemes and interior will be best understood in those of ordinary skill in the art
Hold.
Brief description of the drawings
The utility model is specifically described below with reference to accompanying drawing and with reference to example, the advantages of the utility model and realization
Mode will be more obvious, and content is only used for explanation of the present utility model wherein shown in accompanying drawing, without forming to this reality
With it is new in all senses on limitation, in the accompanying drawings：
Fig. 1 is the structural representation of the temperature controlled device of stoste before the carbon fibre precursor of the utility model embodiment is spun.
Fig. 2 is the structural representation of the temperature controlled device of stoste before the carbon fibre precursor of another embodiment of the utility model is spun
Figure.
Embodiment
As shown in figure 1, the utility model provides the temperature controlled device of stoste before a kind of carbon fibre precursor is spun, including static state
Mixed heat exchanger 11, baffle heater 12, panel cooler 13；The static mixing heat exchanger 11 includes chuck and is arranged on pipe
Tubular static mixer in journey, usually, when static mixing heat exchanger 11 is connected into stoste pipeline, it is necessary to convey stoste
Flow direction is opposite with chuck current direction；The temperature controlled device of stoste also includes before the carbon fibre precursor is spun：
Electromagnetic pump 14, its entrance point are connected with the chuck of static mixing heat exchanger 11, the port of export and baffle heater 12, plate
Formula cooler 13 is connected；That is, in the present embodiment, the outlet of electromagnetic pump 14 is divided into two-way, respectively with baffle heater 12,
Panel cooler 13 is connected；
Three-way control valve 15, first end are connected with baffle heater 12, and the second end is connected with panel cooler 13, the 3rd end
It is connected with static mixing heat exchanger 11；
Controller 18, it is connected with three-way control valve 15, for adjusting the first end of three-way control valve 15 according to preset temperature
With the flow at the second end.
On the basis of embodiment corresponding to Fig. 1, as shown in Fig. 2 stoste before the carbon fibre precursor spinning that the present embodiment provides
Temperature controlled device 10 except including by three-way control valve 15 be connected static mixing heat exchanger 11, baffle heater 12,
Panel cooler 13, and electromagnetic pump 14, the controller that is connected with three-way control valve 15 being connected with static mixing heat exchanger 11
Outside 18；Also include：
First cooling-water temperature sensor 16, between static mixing heat exchanger 11 and electromagnetic pump 14；
Second cooling-water temperature sensor 17, between three-way control valve 15 and static mixing heat exchanger 11.
Now, controller can be also used for receiving the first temperature detection value of the first cooling-water temperature sensor 16 and the second water temperature passes
The second temperature detected value of sensor 17, and flow of the first end with the second end of three-way control valve 15 is adjusted accordingly.
In the specific implementation, if the first temperature detection value is less than second temperature detected value, static mixing heat exchanger 11 is illustrated
Interior stoste temperature declines；The flow of the first end of three-way control valve can now increased, that is, increases hot water side aperture
Greatly；Into heated condition, the stoste in static mixing heat exchanger 11 is set to heat up.
If the first temperature detection value is more than second temperature detected value, illustrate in the stoste temperature in static mixing heat exchanger 11
Rise；The flow at the second end of three-way control valve can now increased, that is, increases cold water side aperture；Into cooling shape
State, stoste in static mixing heat exchanger 11 is set to cool.
In another embodiment of the present utility model, in addition to low pressure steam inlet regulating valve 18, with baffle heater 12
It is connected；Cooling water inlet regulating valve 19, it is connected with panel cooler 13.The low pressure steam inlet regulating valve 18 and cooling water inlet regulation
Valve 19 again may be by controller control to adjust flow.
Alternatively, on the basis of any corresponding embodiment of Fig. 1 or Fig. 2, stoste temperature before above-mentioned carbon fibre precursor is spun
After the device access stoste pipeline 21 of control, temperature measuring set 22 can also be set on stoste pipeline 21, to measure via quiet
The temperature of the stoste of state mixed heat exchanger；Controller is additionally operable to obtain the temperature detection of the stoste via static mixing heat exchanger
Value, and adjustment is compensated to preset temperature accordingly.
In the specific implementation, desalted water can be used to carry out circular flow as the temperature control medium of stoste, the liquid in chuck
The temperature of body can be controlled between 25.0 DEG C to 35.0 DEG C, and precision is 0.1 DEG C.
According to other side of the present utility model, there is provided a kind of temperature controlled method of stoste before carbon fibre precursor is spun,
Comprise the following steps：
S1, start electromagnetic pump, the liquid in the chuck positioned at static mixing heat exchanger is divided into two parts, and respectively via
It is re-introduced into after baffle heater and panel cooler in the chuck of static mixing heat exchanger；
S2, according to preset temperature adjust three-way control valve, the first end of three-way control valve, the second end, the 3rd end respectively with
Baffle heater, panel cooler, the chuck of static mixing heat exchanger are connected.
In the specific implementation, threeway tune is sequentially connected after the port of export connecting plate type heater and panel cooler of electromagnetic pump
Save valve, static mixing heat exchanger, the entrance point composition circulation for connecting electromagnetic pump.
Above-mentioned steps S2 can include：Obtain first temperature detection value of the liquid before electromagnetic pump is entered；Obtain liquid
Second temperature detected value of the body before the chuck of static mixing heat exchanger is entered；According to the first temperature detection value and second temperature
The first end and the flow at the second end of detected value regulation three-way control valve.
In another embodiment of the present utility model, above-mentioned steps S2 can include：
Obtain first temperature detection value of the liquid before electromagnetic pump is entered；Obtain liquid and enter static mixing heat exchange
Second temperature detected value before the chuck of device；
Judge whether the first temperature detection value is less than second temperature detected value；
If so, then increase the flow of the first end of three-way control valve；
If it is not, then increase the flow at the second end of three-way control valve.
It can be seen that in the present embodiment, if the first temperature detection value is less than second temperature detected value, illustrate static mixing heat exchanger
Interior stoste temperature declines；The flow of the first end of three-way control valve can now increased, that is, increases hot water side aperture
Greatly；Into heated condition, the stoste in static mixing heat exchanger is set to heat up.
If the first temperature detection value is more than second temperature detected value, illustrate in the stoste temperature in static mixing heat exchanger
Rise；The flow at the second end of three-way control valve can now increased, that is, increases cold water side aperture；Into cooling shape
State, stoste in static mixing heat exchanger is set to cool.
Alternatively, can also include：The temperature detection value of the stoste via static mixing heat exchanger is obtained, and accordingly to pre-
If temperature compensates adjustment.
The utility model is further illustrated below by specific embodiment and comparative example：
Specific embodiment：
Carbon fibre precursor is prepared using sodium rhodanate one-step method, sodium sulfocyanate is solvent, acrylonitrile, second comonomer acrylic acid
The different health acid of methyl esters, Third monomer is raw material, and azodiisobutyronitrile is that initiator carries out binary polymerization reaction, by de- single, deaeration
After obtain acrylonitrile polymerization liquid, then double-filtration pressurization after be delivered to measuring pump, spinning head spinning.Used before spinning solution
Fig. 1 device is handled.Workshop condition temperature be 22.0 DEG C~38.0 DEG C, before spinning stoste temperature can held stationary, temperature
Value stabilization is measured at 29.0 DEG C~31.0 DEG C；Stoste dynamic viscosity (poise, 30 DEG C) is between 330.17~343.91 before spinning
Fluctuation, stoste viscosity substantially tends to be steady situation before spinning, is uniformly molded beneficial to tow, obtains isotropic stable precursor；Tow is being spun
The broken wires average minute clock that silk body lotion carries at roll dies is 1.8；Per tour is collected 1 hour boundling roller scraper plate lousiness and is weighed as
0.03g~0.07g；
Comparative example：
Carbon fibre precursor is prepared using sodium rhodanate one-step method, sodium sulfocyanate is solvent, acrylonitrile, second comonomer acrylic acid
The different health acid of methyl esters, Third monomer is raw material, and azodiisobutyronitrile is that initiator carries out binary polymerization reaction, by de- single, deaeration
After obtain acrylonitrile polymerization liquid, then double-filtration pressurization after be delivered to measuring pump, spinning head spinning.Workshop condition temperature exists
Fluctuated between 22.0 DEG C~38.0 DEG C, 26.0 DEG C~38.0 DEG C fluctuations of stoste measured temperature before spinning, stoste is with workshop temperature before spinning
Degree is changed greatly, and tow coagulation forming is had a great influence；Before spinning stoste dynamic viscosity (poise, 30 DEG C) 400.33~
Fluctuated between 400.78.Tow is 4.5 in the broken wires average minute clock that spinning bath is carried at roll dies.Per tour is collected 1 hour
Boundling roller scraper plate lousiness is weighed as 0.25g~0.35g.
By the data of embodiment and comparative example can be seen that device of the present utility model can effectively control it is former before spinning
Liquid temperature degree, stoste dynamic viscosity before stable spinning, is uniformly molded beneficial to tow, obtains isotropic stable precursor, broken wires, scraper plate hair
Silk amount significantly reduces, and obtains the spinning solution of temperature stabilization and the precursor of homogeneous.
The utility model provides the temperature controlled device of stoste before a kind of carbon fibre precursor is spun, it would be desirable to before the spinning of production
Stoste, heat exchange temperature control is carried out by static mixing heat exchanger, is installed temperature element additional in heat exchanger exit, is carried out accurate temperature control
System, so that stoste temperature plateau is accurate to technological requirement before spinning, stoste temperature before spinning accurately can be effectively controlled, obtains temperature
Spend the precursor of stable spinning solution and homogeneous.The utility model can effectively control the temperature of stoste before spinning, stable nascent fibre
The coagulation forming of dimension, so as to improve the quality of carbon fibre precursor.
Above by reference to preferred embodiment of the present utility model has been illustrated, it is new that those skilled in the art do not depart from this practicality
The scope and spirit of type, there can be a variety of flexible programs to realize the utility model.For example, the part as one embodiment
The feature for showing or describing can be used for another embodiment to obtain another embodiment.It these are only that the utility model is preferably feasible
Embodiment, not thereby limit to interest field of the present utility model, it is all to use the utility model specification and accompanying drawing content
The equivalence changes made, it is both contained within interest field of the present utility model.
Claims (6)
- The temperature controlled device of stoste before 1. a kind of carbon fibre precursor is spun, it is characterised in that including static mixing heat exchanger, board-like Heater, panel cooler；Also include：Electromagnetic pump, its entrance point are connected with the chuck of the static mixing heat exchanger, the port of export and the baffle heater, board-like Cooler is connected；Three-way control valve, first end are connected with the baffle heater, and the second end is connected with the panel cooler, the 3rd end with The static mixing heat exchanger is connected；Controller, it is connected with the three-way control valve, for adjusting the first of the three-way control valve according to preset temperature The flow at end and the second end.
- The temperature controlled device of stoste before 2. carbon fibre precursor is spun according to claim 1, it is characterised in that also include：First cooling-water temperature sensor, between the static mixing heat exchanger and the electromagnetic pump；Second cooling-water temperature sensor, between the three-way control valve and the static mixing heat exchanger.
- The temperature controlled device of stoste before 3. carbon fibre precursor is spun according to claim 2, it is characterised in that the controller The second temperature of the first temperature detection value and second cooling-water temperature sensor that are additionally operable to receive first cooling-water temperature sensor is examined Measured value, and the first end of the three-way control valve and the flow at the second end are adjusted accordingly.
- The temperature controlled device of stoste before 4. carbon fibre precursor is spun according to claim 2, it is characterised in that the controller The second temperature of the first temperature detection value and second cooling-water temperature sensor that are additionally operable to receive first cooling-water temperature sensor is examined Measured value, the stream of the first end of the three-way control valve is made if first temperature detection value is less than the second temperature detected value Amount increase, the second end of the three-way control valve is made if first temperature detection value is more than the second temperature detected value Flow increases.
- The temperature controlled device of stoste before 5. carbon fibre precursor is spun according to claim 1, it is characterised in that also include：Low pressure steam inlet regulating valve, it is connected with the baffle heater；Cooling water inlet regulating valve, it is connected with the panel cooler.
- The temperature controlled device of stoste before 6. carbon fibre precursor is spun according to claim 1, it is characterised in that the controller It is additionally operable to obtain the temperature detection value of the stoste via the static mixing heat exchanger, and the preset temperature is mended accordingly Repay adjustment.
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| CN201720730520.7U CN207019522U (en) | 2017-06-22 | 2017-06-22 | The temperature controlled device of stoste before a kind of carbon fibre precursor is spun |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289806A (en) * | 2017-06-22 | 2017-10-24 | 兰州蓝星纤维有限公司 | The temperature controlled devices and methods therefor of stoste before a kind of carbon fibre precursor is spun |
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2017
- 2017-06-22 CN CN201720730520.7U patent/CN207019522U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289806A (en) * | 2017-06-22 | 2017-10-24 | 兰州蓝星纤维有限公司 | The temperature controlled devices and methods therefor of stoste before a kind of carbon fibre precursor is spun |
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