CN106048759B - The process units of high-purity meta-aramid fibre fibrid - Google Patents
The process units of high-purity meta-aramid fibre fibrid Download PDFInfo
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- CN106048759B CN106048759B CN201610694516.XA CN201610694516A CN106048759B CN 106048759 B CN106048759 B CN 106048759B CN 201610694516 A CN201610694516 A CN 201610694516A CN 106048759 B CN106048759 B CN 106048759B
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
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- Textile Engineering (AREA)
- Extraction Or Liquid Replacement (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of process units of high-purity meta-aramid fibre fibrid, belong to high molecular material production field, device includes slurries transmission measurement system, precipitating liquid transmission measurement system, solvent transmission measurement system, water wash system and precipitation machine etc., proportioning between slurries and precipitating liquid can be adjusted flexibly using the present apparatus, the setting of solvent transmission measurement system is it is possible to prevente effectively from slurries block when entering precipitation machine, suitable for the industrialization high-purity meta-aramid fibre fibrid of continuous production.
Description
Technical field
Belong to chemical machinery field, is to be related to high molecular material process units.It is exactly to be related to one kind being suitable for industry
Change the device for continuously preparing high-purity meta-aramid fibre fibrid.
Background technology
Meta-aramid scientific name is poly, and the country is also referred to as aramid fiber 1313, and meta-aramid is current height
One of kind with fastest developing speed in performance fibers is a kind of tec fiber of high comprehensive performance, in protective clothes, honeycomb knot
Structure material, electrically-insulating paper and high-temperature-resistant filtering material etc. have extensive purposes, be aerospace, electronics, communication, environmental protection,
The important foundation material in the fields such as petrochemical industry, ocean development and high-performance apparel.
Meta-aramid fibre fibrid is the important raw and processed materials for manufacturing honeycomb paper and insulating paper, its quality and the power of honeycomb paper
It is closely related to learn performance, the insulating properties of insulating paper and mechanical property.Content of ashes（Especially calcium ion content）It is that meta-aramid is heavy
Important one of quality index is analysed, the electric property of aramid insulating paper is had a major impact, therefore it is heavy how to reduce meta-aramid
Analyse fiber ash content（Especially reduce calcium ion content）Be production insulating paper meta-aramid fibre fibrid to be considered it is important
Parameter.
Meta-aramid fibre fibrid beating degree is also to influence the important indicator of aramid insulating paper performance, in order to improve precipitating fibre
The beating degree of dimension is realized often through resin grout liquid jet size is turned on precipitation machine down, brings new problem again in this way, is held
Spray nozzle clogging easily occurs.
Invention content
The technical problem to be solved in the present invention is to provide a kind of avoidable precipitation machine spray nozzle cloggings, and are applicable to industrialize
Continuously prepare the device of high-purity meta-aramid fibre fibrid.
In order to solve the above technical problem, the present invention provides a kind of high-purity meta-aramid fibre fibrid process units,
Including slurries transmission measurement system, precipitating liquid transmission measurement system, solvent transmission measurement system, water wash system and precipitation machine etc.；
Slurries transmission measurement system includes slurry storage tank, slurry feeding pump, slurry stream gauge and slurries filter；The metering of precipitating liquid is defeated
It includes precipitating liquid holding vessel, precipitating liquid delivery pump, precipitating flow meters and precipitating liquid filter to send system；Solvent measures delivery system
System includes solvent holding vessel, solvent delivery pump and solvent flux meter.
The connection relation of process units is：The delivery outlet of slurry storage tank is connected with the input port of slurry feeding pump, slurry
The delivery outlet of liquid delivery pump is connected with the input port of slurry stream gauge, and the delivery outlet of slurry stream gauge is defeated with slurries filter
Entrance is connected, and the delivery outlet of slurries filter is connected with the slurries input port of precipitation machine；The delivery outlet of precipitating liquid holding vessel
It is connected with the input port of precipitating liquid delivery pump, the delivery outlet of precipitating liquid delivery pump is connected with the input port of precipitating flow meters
Connect, the delivery outlet of precipitating flow meters is connected with the input port of precipitating liquid filter, the delivery outlet of precipitating liquid filter with it is heavy
The precipitating liquid input port of analysis machine is connected；The delivery outlet of solvent holding vessel is connected with the input port that solvent delivery pumps, and solvent is defeated
The delivery outlet of pump is sent to be connected with the input port of solvent flux meter, the delivery outlet of solvent flux meter is connected to precipitating liquid filter
Between delivery outlet and the precipitating liquid input port pipeline of precipitation machine；The delivery outlet of precipitation machine is connected to the upper of rinsing machine by pipeline
It is square, cleaning solution input channel is additionally provided with above rinsing machine, the lower section of rinsing machine is equipped with compressed gas input channel, rinsing machine
Delivery outlet is connected with the input port of filtrate delivery pump, and the delivery outlet of filtrate delivery pump is connected with filtrate holding vessel.
The slurry feeding pump selects gear pump or Quimby pump.
The precipitating liquid delivery pump selects centrifugal pump.
The solvent delivery pump selects centrifugal pump.
The filtrate delivery pump selects diaphragm pump or centrifugal pump.
When production run, start solvent transmission measurement system first, because the mass fraction of solvent is 95% or more（Remaining
For water）, after solvent transmission measurement system starts, space is filled by solvent in precipitation machine, after slurries transmission measurement system starts,
Position aramid fiber resin grout liquid, which enters precipitation machine and mixed with solvent, will not occur resin precipitating phenomenon from solvent, therefore will not sink
Resin grout liquid spray nozzle clogging situation on analysis machine；After resin grout liquid normally enters precipitation machine, solvent transmission measurement system is closed, is opened
Dynamic precipitating liquid transmission measurement system, the solvent before precipitating liquid gradually replace in precipitation machine, resin grout liquid start precipitating until surely
Surely fibrid is precipitated.
Description of the drawings
Below in conjunction with the accompanying drawings, it elaborates to the specific implementation mode of the present invention.
Fig. 1 is the schematic device of embodiment of the present invention.
Specific implementation mode
The schematic device of embodiment of the present invention is as shown in Figure 1, process units includes slurries transmission measurement system, precipitating
Liquid transmission measurement system, solvent transmission measurement system, water wash system and precipitation machine etc.；Slurries transmission measurement system includes slurries storage
Deposit tank 1, slurry feeding pump 3, slurry stream gauge 5 and slurries filter 7；Precipitating liquid transmission measurement system includes precipitating liquid holding vessel
2, precipitating liquid delivery pump 4, precipitating flow meters 6 and precipitating liquid filter 8；Solvent transmission measurement system includes solvent holding vessel
10, solvent delivery pump 11 and solvent flux meter 12.Water wash system includes rinsing machine rinsing machine 13, cleaning solution input channel 16, pressure
Contracting gas feeding duct 17, filtrate delivery pump 14 and filtrate holding vessel 15.
The connection relation of process units is：The delivery outlet of slurry storage tank 1 is connected with the input port of slurry feeding pump 3,
The delivery outlet of slurry feeding pump 3 is connected with the input port of slurry stream gauge 5, and delivery outlet and the slurries of slurry stream gauge 5 filter
The input port of device 7 is connected, and the delivery outlet of slurries filter 7 is connected with the slurries input port of precipitation machine 9；Precipitating liquid holding vessel
2 delivery outlet is connected with the input port of precipitating liquid delivery pump 4, delivery outlet and the precipitating flow meters 6 of precipitating liquid delivery pump 4
Input port is connected, and the delivery outlet of precipitating flow meters 6 is connected with the input port of precipitating liquid filter 8, precipitating liquid filter 8
Delivery outlet be connected with the precipitating liquid input port of precipitation machine 9；The delivery outlet of solvent holding vessel 10 is defeated with solvent delivery pump 11
Entrance is connected, solvent delivery pump 11 delivery outlet be connected with the input port of solvent flux meter 12, solvent flux meter 12 it is defeated
Outlet is connected between the delivery outlet of precipitating liquid filter 8 and the precipitating liquid input port pipeline of precipitation machine 9；The output of precipitation machine 9
Mouth is connected to the top of rinsing machine 13 by pipeline, and the top of rinsing machine 13 is additionally provided with cleaning solution input channel 16, rinsing machine 13
Lower section be equipped with compressed gas input channel 17, the delivery outlet of rinsing machine 13 is connected with the input port of filtrate delivery pump 14, filter
The delivery outlet of liquid delivery pump 14 is connected with filtrate holding vessel 15.
Slurry feeding pump 3 selects gear pump or Quimby pump, preferably gear pump.
Precipitating liquid delivery pump 4 selects centrifugal pump.
Solvent delivery pump 11 selects centrifugal pump.
Filtrate delivery pump 14 selects diaphragm pump or centrifugal pump, preferred diaphragm pump.
Embodiment 1.
In the present embodiment, slurry feeding pump 3 selects gear pump, precipitating liquid delivery pump 4 to select centrifugal pump, solvent delivery pump 11
Centrifugal pump, filtrate delivery pump 14 is selected to select diaphragm pump.
Highly concentrated solvent in solvent holding vessel 10（95% or more, remaining is the mass fraction of n,N-dimethylacetamide
Water）Under the action of solvent delivery pump 11, enter precipitating after the metering of solvent flux meter 12 with 100.0 mass parts flow velocitys per hour
In machine 9；Meta-aramid resin solution in slurry storage tank 1（The mass fraction of poly resin is
16%, the mass fraction of n,N-dimethylacetamide is 79.1%, and the mass fraction of hydrogen chloride is 4.9%）120 DEG C are heated to, is being starched
Enter slurry stream gauge 5 under the action of liquid delivery pump 3, enters filtering accuracy with 41.75 mass parts per hour for 10 after metering
The slurries filter of micron, enters back into after filtering in precipitation machine, and after resin solution enters precipitation machine 9, it is defeated to close solvent metering
System is sent, precipitating liquid transmission measurement system is opened；Precipitating liquid transmission measurement system feature is as follows：The precipitating of precipitating liquid holding vessel 2
Liquid（The mass fraction of n,N-dimethylacetamide is 55%, and the mass fraction of water is 42%, and the mass fraction of hydrogen chloride is 3%）It is cold
But to 5 DEG C, precipitating flow meters 6 are entered under the action of precipitating liquid delivery pump 4, the precipitating for being 1 micron using filtering accuracy
Liquid filter 8, with 1461.25 mass parts per hour（Resin solution is 1 with precipitating liquid mass ratio:35）Into in precipitation machine 9, sink
Analysis machine shear rate is 120/S, the washed liquid of gained fibrid stoste（Deionized water）After washing 10 times repeatedly, it is separated by solid-liquid separation
Obtain meta-aramid fibre fibrid.
Sampled chemical examination detection, gained meta-aramid fibre fibrid ash content are 0.05%, iron ion content 10.66ppm, calcium
Ion concentration 17.43ppm.
Embodiment 2.
The present embodiment uses implementation same as Example 1, but meta-aramid resin solution is by calcium hydroxide
And processing.
Highly concentrated solvent in solvent holding vessel 10（95% or more, remaining is the mass fraction of n,N-dimethylacetamide
Water）Under the action of solvent delivery pump 11, enter precipitating after the metering of solvent flux meter 12 with 80.0 mass parts flow velocitys per hour
In machine 9；Meta-aramid resin solution in slurry storage tank 1（The mass fraction of poly resin is
14%, the mass fraction of n,N-dimethylacetamide is 77.35%, and the mass fraction of calcium chloride is 6.53%, and the mass fraction of water is
2.12%）110 DEG C are heated to, slurry stream gauge 5 is entered under the action of slurry feeding pump 3, after metering with per hour 47.69
Mass parts enter the slurries filter that filtering accuracy is 10 microns, are entered back into after filtering in precipitation machine 9, and it is heavy to enter in resin solution
After analysis machine 9, solvent transmission measurement system is closed, opens precipitating liquid transmission measurement system；Precipitating liquid transmission measurement system feature is such as
Under：The precipitating liquid of precipitating liquid holding vessel 2（The mass fraction of n,N-dimethylacetamide is 55%, and the mass fraction of water is 45%）It is cold
But to 10 DEG C, precipitating flow meters 6 are entered under the action of precipitating liquid delivery pump 4, enter back into the precipitating that filtering accuracy is 1 micron
Liquid filter 8, with 1430.7 mass parts per hour（Resin solution is 1 with precipitating liquid mass ratio:30）Into in precipitation machine 9, sink
Analysis machine shear rate is 100/S, the washed liquid of gained fibrid stoste（Deionized water）After washing 10 times repeatedly, it is separated by solid-liquid separation
Obtain meta-aramid fibre fibrid.
Sampled chemical examination detection, gained meta-aramid fibre fibrid ash content are 0.23%, iron ion content 260.8ppm, calcium
Ion concentration 3540ppm.
Claims (5)
1. a kind of process units of high-purity meta-aramid fibre fibrid, it is characterized in that：Slurry storage tank（1）Delivery outlet and slurries
Delivery pump（3）Input port be connected, slurry feeding pump（3）Delivery outlet and slurry stream gauge（5）Input port be connected, starch
Flow meters（5）Delivery outlet and slurries filter（7）Input port be connected, slurries filter（7）Delivery outlet and precipitating
Machine（9）Slurries input port be connected；Precipitating liquid holding vessel（2）Delivery outlet and precipitating liquid delivery pump（4）Input port be connected
It connects, precipitating liquid delivery pump（4）Delivery outlet and precipitating flow meters（6）Input port be connected, precipitating flow meters（6）It is defeated
Outlet and precipitating liquid filter（8）Input port be connected, precipitating liquid filter（8）Delivery outlet and precipitation machine（9）Precipitating
Liquid input port is connected；Solvent holding vessel（10）Delivery outlet and solvent delivery pump（11）Input port be connected, solvent delivery
Pump（11）Delivery outlet and solvent flux meter（12）Input port be connected, solvent flux meter（12）Delivery outlet be connected to precipitating
Liquid filter（8）Delivery outlet and precipitation machine（9）Precipitating liquid input port pipeline between；Precipitation machine（9）Delivery outlet pass through pipe
Road is connected to rinsing machine（13）Top, rinsing machine（13）Top be additionally provided with cleaning solution input channel（16）, rinsing machine（13）
Lower section be equipped with compressed gas input channel（17）, rinsing machine（13）Delivery outlet and filtrate delivery pump（14）Input port be connected
It connects, filtrate delivery pump（14）Delivery outlet and filtrate holding vessel（15）It is connected.
2. a kind of process units of high-purity meta-aramid fibre fibrid according to claim 1, it is characterized in that：The slurries
Delivery pump（3）Select gear pump or Quimby pump.
3. a kind of process units of high-purity meta-aramid fibre fibrid according to claim 1, it is characterized in that：The precipitating
Liquid delivery pump（4）Select centrifugal pump.
4. a kind of process units of high-purity meta-aramid fibre fibrid according to claim 1, it is characterized in that：The solvent
Delivery pump（11）Select centrifugal pump.
5. a kind of process units of high-purity meta-aramid fibre fibrid according to claim 1, it is characterized in that：The filtrate
Delivery pump（14）Select diaphragm pump or centrifugal pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610694516.XA CN106048759B (en) | 2016-08-22 | 2016-08-22 | The process units of high-purity meta-aramid fibre fibrid |
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| CN106048759B true CN106048759B (en) | 2018-09-21 |
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| CN115287936B (en) * | 2022-07-08 | 2023-06-06 | 株洲时代新材料科技股份有限公司 | Fibrid and preparation process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3018091A (en) * | 1959-04-10 | 1962-01-23 | Du Pont | Precipitation apparatus |
| CN1952226A (en) * | 2006-09-30 | 2007-04-25 | 烟台氨纶股份有限公司 | Meta-aramid fibrid and preparation method thereof |
| CN102660795B (en) * | 2012-05-29 | 2014-11-19 | 四川力通复合材料科技有限公司 | Production method of meta-position aramid paper fibrid |
| CN202968436U (en) * | 2012-11-04 | 2013-06-05 | 乐占线 | Purification device of enramycin |
| CN206033943U (en) * | 2016-08-22 | 2017-03-22 | 上海会博新材料科技有限公司 | High -purity meta -position aramid fibrid's apparatus for producing |
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