CN110195263A - A kind of preparation method of solvent method production regenerated celulose fibre spinning glue - Google Patents
A kind of preparation method of solvent method production regenerated celulose fibre spinning glue Download PDFInfo
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- CN110195263A CN110195263A CN201910535997.3A CN201910535997A CN110195263A CN 110195263 A CN110195263 A CN 110195263A CN 201910535997 A CN201910535997 A CN 201910535997A CN 110195263 A CN110195263 A CN 110195263A
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- dissolvers
- solvent
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- thick
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- 239000003292 glue Substances 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 42
- 239000002904 solvent Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000009987 spinning Methods 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000000835 fiber Substances 0.000 title claims abstract description 21
- 229920002678 cellulose Polymers 0.000 claims abstract description 29
- 239000001913 cellulose Substances 0.000 claims abstract description 29
- 238000001704 evaporation Methods 0.000 claims abstract description 24
- 230000008020 evaporation Effects 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000004090 dissolution Methods 0.000 claims description 14
- 238000009833 condensation Methods 0.000 claims description 11
- 230000005494 condensation Effects 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000178 monomer Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 2
- 150000004682 monohydrates Chemical class 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 claims 2
- 210000000527 greater trochanter Anatomy 0.000 claims 1
- 239000010408 film Substances 0.000 description 15
- 238000012545 processing Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 229920000433 Lyocell Polymers 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002453 shampoo Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Classifications
-
- 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
- D01D1/02—Preparation of spinning solutions
-
- 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
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention discloses a kind of preparation methods of solvent method production regenerated fiber spinning glue, and by 2 or multiple vertical luwa evaporators and single horizontal tubular thick-layer evaporation dissolvers connection form.The aqueous mixture of cellulose and solvent and auxiliary agent is prepared into the cellulose spinning glue with spinnability, the mixtures of materials is first injected into 2 or multiple vertical luwa evaporators, be then injected into the horizontal tubular thick-layer dissolvers of coupled one and is evaporated and is mixed into regenerated celulose fibre spinning glue under vacuum.The present apparatus is suitable for carrying out the evaporation of large quantity of moisture in the case that first step medium viscosity is lower and the residence time is short using the good heat conductivity of luwa evaporator.Since viscosity is low, therefore the power consumption of motor is also accordingly greatly reduced.The present invention is able to achieve higher efficiency and guarantees the quality of uniform product, can also adjust production capacity according to the market demand.
Description
Technical field
The present invention relates to textile technology field, specifically a kind of solvent method produces regenerated celulose fibre spinning glue
Preparation method.
Background technique
The regenerated celulose fibre glue of solvent method production at present mainly utilizes NMMO solvent to be mixed with cellulose to prepare.
Now illustrated by taking the preparation process of lyocell (lyocell) fiber glue as an example.The preparation of Lyocell fibers glue is using nothing
Malicious solvent NMMO(N- methyl morpholine-M- oxide) cellulose is directly carried out dissolution under physical change become it is highly viscous can
The property spun glue.In order to realize this process, there are following three productions method, devices on Vehicles Collected from Market.
1. a kind of most widely used device is using luwa evaporator (also referred to as thin film evaporator) under vacuum conditions to containing
There is the slurry congee of cellulose, water and NMMO and a small amount of auxiliary agent to carry out the evaporation of moisture, when the concentration of NMMO reaches 87% or so
With regard to forming cellulose glue.Whole process is completed in luwa evaporator.A set of condenser system is separately configured in complete equipment, leads to
The foundation for crossing measurement condensation water quantity to calculate the state of plastic and adjust as relevant temperature or rotor revolution number or vacuum degree.Then
Glue carries out spinning to spinning machine by the subsequent processing such as pipeline and filtering.The advantages of luwa evaporator is that have well
Heat transfer performance, but the disadvantage is that plant capacity is big, the time of material lagging is short, the bad control of glue uniformity.Due to equipment
It is machined the limitation of aspect, large-sized processing equipment cannot infinitely amplify.In addition after amplifying to equipment, loading and larger,
Requirement to workshop is also higher, causes cost of investment excessively high, and cost performance reduces.Maximum separate unit production capacity generally exists this equipment at present
15000 tons/year to 25000 tons/year.
2. another process units used on a small scale is that (also referred to as: kneading is anti-by horizontally disposed thick-layer dissolvers
Answer device) under vacuum conditions to the evaporation containing cellulose, water and NMMO and the slurry congee progress moisture of a small amount of auxiliary agent, when NMMO's
Cellulose glue is just formed when concentration reaches 87% or so.Whole process is completed in luwa evaporator and complete equipment
A set of condenser system is separately configured.Then glue carries out spinning to spinning machine by the subsequent processing such as pipeline and filtering.
The advantages of thick-layer dissolvers is that the material lagging time is longer, good mixing effect.The disadvantage is that high equipment cost, evaporation efficiency are low.
Maximum separate unit production capacity is usually no more than 5000 tons/year to this equipment at present.The inadaptable needs being mass produced at present.
3. being to be combined use, such as patent application using the advantage of both the above device respectively there are also a kind of process units
The patent of invention of the method for moulded parts " manufacture " entitled disclosed in publication No. CN104246029A, i.e. a luwa evaporator with
One thick-layer dissolvers connection uses.Material as far as possible will be steamed in luwa evaporator using its good heat transfer performance more
Shampoo divides and lower than at water evaporation quantity needed for glue, and then this slurry congee is evaporated to glue dissolution institute in thick-layer dissolvers on a small quantity
The state of need simultaneously makes material be uniformly mixed into uniform glue using its excellent mixed performance.Although this device is than two kinds of front
Equipment theoretically has certain advance, and the production capacity singly covered can also increase, but is still limited by luwa evaporator processing
The limitation of size, therefore the requirement of more extensive production capacity cannot be reached.The limit production capacity of separate unit is no more than 30000 tons every year.It is a whole set of
A set of condenser system is separately configured in equipment, does not determine the respective evaporation effect of each equipment and state by condensation water quantity, and
It is the concentration of molding solution and/or diluent to be controlled by optical index (refraction index), and propose that ideally optical index is situated between
Between 1.45-1.52, but this control method is only applicable in the single devices completion mentioned with above-mentioned 1 and 2 and entirely walks at glue
Rapid situation, for 3 mention two kinds of equipment of combined use the case where cannot achieve.Belong to the significant deficiency in design,
Cause a kind of situation for not having actual operation.The art does not have in production technology and equipment aspect since 2014
There is any technological improvement, can not enhance production capacities in the case where guaranteeing uniform glue.
Do not reach in view of the device list set ability of the above several types and produce 30000 tons of requirement per year, and mating more sets
Prepare glue device also can inevitably be processed because of technology controlling and process and respectively same category of device itself processing present on difference and
There is glue quality and difference occur, influences the homogeneity of end product quality.So needing to research and develop a kind of combination of bigger ability
Device, so that the production capacity of every production line reaches the production capacity of 60000 tons annual (calculating for 330 days), it is even higher, it realizes higher
Efficiency and the quality for guaranteeing uniform product, while there is operability.
Summary of the invention
It is an object of the invention to based in the understanding to above method advantage and disadvantage, proposing that a kind of production regeneration of solvent method is fine
The preparation method of cellulose fiber spinning glue.It changes the configuration of operating procedure and equipment, to realize single line production capacity substantially
It improves, while guaranteeing to obtain the spinning glue of preferably uniform solvent method preparation.Such as the production capacity of every production line is according to group
Closing configuration can achieve 40000 tons of annual or 60000 tons annual (calculating for 330 days) production capacities.
To reach the purpose, list covering device needs to steam 2 or multiple (claiming below multiple) knifing according to production capacity
Hair device and single thick film dissolvers are combined configuration.Instrument size is optimized according to production capacity.Each luwa evaporator
And thick film dissolvers is required to individually be equipped with condenser system, is realized by measuring with actual evaporation water and calculated value
Compare and to adjust the temperature of the collet heating agent of each single devices accordingly or adjust rotor revolution number or vacuum degree adjustment or knot
It is adjusted altogether to control control of the evaporated water i.e. to glue dissolution degree.
Specific technical solution is as follows:
The preparation method of a kind of solvent method production regenerated celulose fibre spinning glue, by the aqueous of cellulose and solvent and auxiliary agent
Mixture is prepared into the cellulose spinning glue with spinnability, it is characterised in that: by the mixtures of materials first inject 2 or
Multiple vertical luwa evaporators are then injected into the horizontal tubular thick-layer dissolvers of coupled one and carry out under vacuum
Evaporation and mixing.
Linkage section is using pump or spiral pusher or carries out material conveying by pipeline by gravity blanking mode or uses direct
Mode
Each individually vertical luwa evaporator and tubular thick-layer dissolvers equipment monomer configure individual condenser system
Each individually vacuum system of vertical luwa evaporator and tubular thick-layer dissolvers can be separately configured or share or scrape
Film evaporator shares a set of vacuum system
Each individually vertical luwa evaporator and tubular thick-layer dissolvers equipment monomer work under different vacuum pressures or
It works on same vacuum pressure.
The solvent is other solvents of NMMO or dissolved cellulose.
Mixed material evaporation water and improves solvent strength in the vertical luwa evaporator, but molten lower than cellulose
Concentration required for solving.
The solvent based on NMMO is such as used, NMMO is concentrated into the level higher than monohydrate.That is NMMO and water and NMMO
Ratio be lower than 86.7%.
In the thick-layer evaporator, the material for being transported to the thick film dissolvers from luwa evaporator passes through evaporation
Solvent concentration of ordinary dissolution is increased to by moisture can form spinnability glue with the level and homogenizing of cellulose dissolution.
The luwa evaporator jacket steam temperature is run between 100-180 degree, and preferably 100-150 degree is run, collet
Hot water temperature runs between 80-105 degree.The thick film dissolvers collet heating agent is run between 90-120 degree, preferably 100-
110 degree.
The luwa evaporator and the thick film dissolvers are run under the vacuum of 40-100 absolute pressure vacuum degree, preferably 45-
It is run under 55 absolute pressure vacuum degrees.
If luwa evaporator and the thick film dissolvers work under different vacuum degrees, the preferred vacuum of thick-layer dissolvers
Pressure is less than the vacuum pressure of knifing dissolvers.
Evaporation process need to condense the vapor evaporated by condenser material under vacuum conditions.Utilize calculating
Condensation water quantity and the comparison of practical condensation water quantity to adjust collet heat medium temperature or rotor speed or vacuum degree or in conjunction with controlling
The degree that moisture is evaporated in spinning glue.Condensation number is needed as practical condensation number is less than to calculate, it can be by improving heat medium temperature
Or increases rotor revolution number or reduce vacuum pressure or be used in combination to adjust.
By taking NMMO solvent as an example: the cellulose slurry congee containing NMMO being injected separately into multiple vertical luwa evaporators and is carried out
Then prevapourising starches congee and is transported to evaporation in horizontal thick film dissolvers and mixes and be discharged after forming uniform glue.
Dissolution of the cellulose slurry congee in NMMO based on three kinds of known devices, from technology angle analysis containing NMMO
Journey.
It was determined that course of dissolution can be basically divided into three steps.The first step is to evaporate water from cellulose-solvent slurry congee
Point, until the dissolution starting point of cellulose.The starting point corresponds to and reaches dissolution window, corresponds to about 2.5 hydration NMMO.The step
It needs a large amount of thermal energy to carry out evaporation water, but since cellulose was not yet dissolved without any additional residence time, and starches congee
Viscosity it is lower.
After reaching dissolution window, the main dissolution that viscosity significantly increases is carried out in second step.The moisture phase of this step evaporation
To less, it is evaporated to about 1.5 hydration NMMO always.
Third step then carries out less water evaporation by the homogenization degree of spinning glue and according to the concentration of cellulose
It is determined to 0.8 to 1.0 hydrate.
The invention has the advantages that the present apparatus is lower suitable for first step medium viscosity using the good heat conductivity of luwa evaporator
And the residence time it is short in the case where carry out large quantity of moisture evaporation.Since viscosity is low, thus the power consumption of motor also it is corresponding substantially
It reduces.And thick-layer dissolvers then utilizes its excellent homogenize performance and longer residence time and suitable processing high viscosity object
Characteristic and the moisture less situation of evaporation demand of material and be suitable for second step and third step, and be able to achieve higher efficiency and
Guarantee the quality of uniform product, while there is operability.In addition, another outstanding advantages of this device are can basis
User needs very big production capacity adjustment space, such as only opens a luwa evaporator, and others are not opened.Also it is conducive to tables of equipment simultaneously
Solely is safeguarded and overhauled.This is extremely beneficial for control production scale.
Detailed description of the invention
Fig. 1 is device structure schematic diagram when 2 luwa evaporators correspond to a thick-layer dissolvers.
Device structure schematic diagram when Fig. 2 is 3 or multiple luwa evaporator one thick-layer dissolvers of correspondence.
1 is intake line I in figure, and 2. be intake line II, and 3 be luwa evaporator I, and 4 be luwa evaporator II, and 5 be condensation
Device I, 6 be condenser II, and 7 be spiral pusher or direct-connected changeover portion, and 8 be pump or spiral pusher or direct-connected changeover portion, and 9 be thickness
Film evaporator, 10 be condenser III.
Following embodiments by for the corresponding thick film dissolvers of two luwa evaporators to the features and advantages of the present invention into
Row is illustrated；Attached drawing of the invention is not uniquely, it is one corresponding can to need to carry out multiple luwa evaporators according to client and production capacity
Thick-layer dissolvers carries out different combination configurations.
Specific embodiment
Embodiment 1:
By intake line 1 and 2 wiped film vaporization quantitatively will be injected separately into NMMO and the auxiliary agent cellulose mixtures mixed in advance
Device 3 and 4 can be separated also simultaneously and be carried out.
In luwa evaporator, the mixture material of injection occurs moisture and is concentrated by evaporation.The material of concentration is respectively from knifing
Evaporator 3 and 4(can be carried out simultaneously, can also be separated and be carried out) it is transferred in the same corresponding thick-layer evaporator 9.
In luwa evaporator 3 and 4, collet heating in the case where, mixed material form a film from luwa evaporator and to
Evaporation water under vacuum conditions during lower pusher, and cellulose does not reach dissolved state in the process.In thick-layer
In dissolvers, in the case where collet heating, material is sufficiently mixed with solvent (NMMO) and evaporation section moisture reaches cellulose
Dissolved state, to form highly viscous spinnability glue.Then the spinning glue is passed through by pipeline and pump by tapping equipment
Body is transported to spinning machine and carries out spinning.
In order to further increase production capacity, cellulose concentration in glue can also slightly be improved, then be diluted again
For the cellulose glue of suitable spinnability.It completes to dilute by input channel in tapping equipment.It can also be in tapping equipment
Upstream disperses to carry out in the dilution of any position of thick film dissolvers or simultaneously in multiple positions.
Glue is transported to downstream processing and device for spinning by one or more pump in discharger downstream.
The secondary steam generated in luwa evaporator 3 and 4 and thick film dissolvers can by the condenser that accordingly connects into
Row condensation.
Embodiment 2
By intake line 1 and 2 wiped film vaporization quantitatively will be injected separately into NMMO and the auxiliary agent cellulose mixtures mixed in advance
Device 3 and 4 can be separated also simultaneously and be carried out.
Linkage section can be provided separately or first be focused on after one or more main pipelines to be connected with thick-layer dissolvers again.
Claims (15)
1. a kind of preparation method of solvent method production regenerated celulose fibre spinning glue, by containing for cellulose and solvent and auxiliary agent
Aqueous mixtures are prepared into the cellulose spinning glue with spinnability, it is characterised in that: the mixtures of materials is first injected 2
Or multiple vertical luwa evaporators, be then injected into the horizontal tubular thick-layer dissolvers of coupled one and under vacuum into
Row evaporates and is mixed into regenerated celulose fibre spinning glue.
2. the preparation method of solvent method production regenerated celulose fibre spinning glue according to claim 1, feature exist
In: the material conveying of vertical luwa evaporator and horizontal tubular thick-layer dissolvers uses pump or spiral pusher mode or falls by gravity
Material mode carries out material conveying by pipeline or uses vertical luwa evaporator and the horizontal tubular thick-layer dissolvers side of being directly connected to
Formula.
3. the preparation method of solvent method production regenerated celulose fibre spinning glue according to claim 1, feature exist
In: each individually vertical luwa evaporator and tubular thick-layer dissolvers equipment monomer configure individual condenser system.
4. according to the method described in claim 1, it is characterized by: each individually vertical luwa evaporator and tubular thick-layer are molten
The vacuum system of solution device can be separately configured or share a set of vacuum system with luwa evaporator.
5. the preparation method of solvent method production regenerated celulose fibre spinning glue according to claim 1, feature exist
In: each individually vertical luwa evaporator and tubular thick-layer dissolvers equipment monomer work under different vacuum pressures or
It works on same vacuum pressure.
6. the preparation method of the production of solvent method described in -5 regenerated celulose fibre spinning glue according to claim 1, feature
Be: the solvent is other solvents of NMMO or dissolved cellulose.
7. method according to claim 1, it is characterised in that: mixed material evaporation water in the vertical luwa evaporator
And solvent strength is improved, but lower than concentration required for cellulose dissolution.
8. the preparation method of solvent method production regenerated celulose fibre spinning glue according to claim 7, it is characterised in that:
The solvent based on NMMO is such as used, NMMO is concentrated into the level higher than monohydrate, i.e. NMMO is low with the ratio of water and NMMO
In 86.7%.
9. the preparation method of solvent method production regenerated celulose fibre spinning glue according to claim 1, feature exist
In: in the thick-layer evaporator, the material for being transported to the thick film dissolvers from luwa evaporator passes through evaporation water
Solvent concentration of ordinary dissolution, which is increased to, can form spinnability glue with the level and homogenizing of cellulose dissolution.
10. the preparation method of solvent method production regenerated celulose fibre spinning glue according to claim 1, feature
Be: the jacket steam temperature of the luwa evaporator is run between 100-180 degree, and preferably 100-150 degree is run, collet heat
Coolant-temperature gage is run between 80-105 degree, and the thick film dissolvers collet heating agent is run between 90-120 degree, preferably 100-110
Degree.
11. the preparation method of solvent method production regenerated celulose fibre spinning glue according to claim 1, feature exist
In: the luwa evaporator and the thick film dissolvers are run under the vacuum of 40-100 absolute pressure vacuum degree, preferably 45-55 absolute pressure
It is run under vacuum degree.
12. the preparation method of solvent method production regenerated celulose fibre spinning glue according to claim 12, feature
It is: if luwa evaporator and the thick film dissolvers work under different vacuum degrees, the preferred vacuum pressure of thick-layer dissolvers
Power is less than the vacuum pressure of knifing dissolvers.
13. the preparation method of solvent method production regenerated celulose fibre spinning glue according to claim 1, feature exist
In: evaporation process need to condense the vapor evaporated by condenser material under vacuum conditions, utilize the cold of calculating
Condensate flow and the comparison of practical condensation water quantity are to adjust collet heat medium temperature or rotor speed or vacuum degree or in conjunction with controlling moisture
In the degree of spinning glue evaporation, such as practical condensation number, which is less than to calculate, needs condensation number, can be by improving heat medium temperature or increasing
Greater trochanter revolution reduces vacuum pressure or is used in combination to adjust.
14. the equipment in a kind of preparation method of solvent method production regenerated celulose fibre spinning glue as described in claim 1,
Including vertical luwa evaporator and a horizontal tubular thick-layer dissolvers connected to it, it is characterised in that: 2 or multiple vertical
Luwa evaporator is connect with a horizontal tubular thick-layer dissolvers.
15. the equipment in a kind of preparation method of solvent method production regenerated celulose fibre spinning glue as described in claim 1,
It is characterized by: multiple vertical luwa evaporators are directly connected on horizontal tubular thick-layer dissolvers or first concentrate be connected to
It is connected again with horizontal tubular thick-layer dissolvers after one main pipeline；Or vertical luwa evaporator is directly connected to horizontal tubular
On thick-layer dissolvers, also have vertical luwa evaporator first concentrate be connected to a main pipeline after be connected to form again with thick-layer dissolvers
Hybrid connections mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535997.3A CN110195263A (en) | 2019-06-20 | 2019-06-20 | A kind of preparation method of solvent method production regenerated celulose fibre spinning glue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535997.3A CN110195263A (en) | 2019-06-20 | 2019-06-20 | A kind of preparation method of solvent method production regenerated celulose fibre spinning glue |
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| Publication Number | Publication Date |
|---|---|
| CN110195263A true CN110195263A (en) | 2019-09-03 |
Family
ID=67754791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910535997.3A Pending CN110195263A (en) | 2019-06-20 | 2019-06-20 | A kind of preparation method of solvent method production regenerated celulose fibre spinning glue |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112481708A (en) * | 2019-09-11 | 2021-03-12 | 宁波国际材料基因工程研究院有限公司 | High-flux polymer fiber preparation equipment and preparation method thereof |
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| KR20170085295A (en) * | 2016-01-14 | 2017-07-24 | 에스케이이노베이션 주식회사 | Purification Method by Decoloring and Crystallization of Anhydrous Sugar Alcohols |
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2019
- 2019-06-20 CN CN201910535997.3A patent/CN110195263A/en active Pending
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|---|---|---|---|---|
| CH702321B1 (en) * | 2006-05-12 | 2011-06-15 | List Holding Ag | Continuous direct evaporation and degassing of elastomer-containing polymer solution using heatable-mixing kneader, comprises concentrating elastomer-containing polymer solution, recovering and providing desired shape for further processing |
| DE102009061077A1 (en) * | 2009-02-05 | 2011-06-22 | List Holding Ag | Separating material mixtures, particularly solutions, suspensions and emulsion, involves dividing main vaporization and degasification, where main vaporization and degasification are performed in separate mixing kneader |
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