CN101988219A - LYOCELL fiber spinning coagulating molding equipment - Google Patents
LYOCELL fiber spinning coagulating molding equipment Download PDFInfo
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- CN101988219A CN101988219A CN200910055891XA CN200910055891A CN101988219A CN 101988219 A CN101988219 A CN 101988219A CN 200910055891X A CN200910055891X A CN 200910055891XA CN 200910055891 A CN200910055891 A CN 200910055891A CN 101988219 A CN101988219 A CN 101988219A
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Abstract
The invention belongs to the field of manufacturing chemical fiber, in particular to a regenerated cellulose fiber molding equipment taking oxidation methyl morpholine as a solvent. The LYOCELL fiber spinning coagulating molding equipment comprises a metering pump, a filter, a spinneret plate, a bundling bath and a drawing bath, wherein, a vertical coagulating room is arranged in a space which is below the spinneret plate and above the bundling bath; an air gap with a certain height is reserved on the opening of the upper end of the coagulating room away from the spinneret plate; a plurality of groups of atomizing nozzles are arranged on the two inner sides which are just opposite in the coagulating room; and the atomizing nozzles are connected with the metering pump through an intermediate tank. The spinning molding equipment of the invention is arranged vertically; the coagulating system equipment has small occupation area; and the rectangular multi-unit combined-type spinneret plate has long service life, thus saving the maintenance cost and the production cost of the spinneret plate; and the adoption of the vertical atomized-type coagulating room not only can save the cold amount needed to cool the coagulating bath lotion, but also can improve the concentration of the recovering solvent, thus saving the investment of the recovering equipment and the civil engineering, and lowering the operation cost.
Description
Technical field
The invention belongs to chemical fibre and make the field, relating in particular to a kind of is solvent with oxidation methyl morpholine (NMMO), the regenerated celulose fibre former.
Background technology
The spining technology of the bamboo fibre of having found at present, cotton linter, marine alga, straw pulp (reed), fast-growing woods renewable native cellulose fibres (LYOCELL) such as (wood pulps) can be divided into two big classes: traditional viscose process and dried two kinds of the methods that squirt.Medium according to the moulding of fiber cooled and solidified is distinguished: have solution to spin with solvent and spin.
Regenerated celulose fibre wet method spinning is equipped with used equipment as shown in Figure 1, and the solvent spinning stock solution enters into spinnerets 4 by measuring pump 2 and filter 3, and spinnerets 4 is placed on and is solidified the body lotion submergence in the coagulating tank 14.Cooling and phase separation take place in the stoste thread of spinnerets 4 ejections simultaneously in coagulation bath, to obtain the inner preliminary strand that is separated that produces of surface cure, take filament out of by seal wire slewing rollers 8 then, enter drawing-off bath 7 by godet roller (dish) 9 and finish drawing-off; The length of general freezing point is controlled at 100～300cm.The advantage of this method is, the specific volume of 20 ℃ of water is 4.13 times of 20 ℃ of air, and thermal conductivity factor is 23.73 times; Water is compared with air, is good thermal conductor and energy storage body; Therefore the spinneret orifice number (radical of bundle fiber) and the filament number of spinnerets 4 are higher than melt-spun far away, reach as high as 200000 holes.If after melt-spun adopted water as cooling medium, filament number＞20d can adopt, even can reach 100d～500d.
Traditional wet method is spun the temperature and the concentration control of (dried squirt method also identical) coagulation bath, adopts the method for big bath raio.Though it is simple and easy to operate, but need to be equipped with big volume storage tank and strengthen body lotion cycle-index and internal circulating load, digest spinning solution and bring the heat and the concentrated phase solvent of coagulation bath continuously into, with guarantee that the stoste thread moves in coagulating bath each moment coagulation bath temperature, concentration relatively stable, variable quantity just can obtain quality finished fiber relatively uniformly in the scope of permission.
Be applicable to that all molten (liquid) agent are spun into the wet method spinning method of fine high polymer, shortcoming is subjected to the restriction of strand freezing rate, break for fear of thread, the spinning speed general speed all＜100m/min, therefore, compare with melt-spun, the fiber production capacity that the unit construction area is obtained is very low, the equipment investment height, production efficiency is low.
Driedly squirt the used equipment of method as shown in Figure 2, between spinnerets 4 and coagulating tank 14, increasing air gap 10 on the basis that wet method is spun, making the solution thread leave spinnerets 4 enters in the air gap 10 with ambient gas exchange heat takes place earlier, the surface forms one deck cured film, frictional force between thread surface and the surrounding gas medium diminishes, spin speed thereby improved, and kept wet method again in the coefficient of friction of the strand surface of smooth and primary solidification between reduction and body lotion and spun the fireballing advantage of heat and mass in coagulating tank, spun speed and broken through hundred meters/minute high pointes effectively; Shortcoming is the influence that the air gap control technology is subjected to gas length, air velocity, gas flow temperature, air flow recovery cost, and difficulty is very big; The stoste thread is easy to generate fibrillation at air, therefore, between spinnerets and the liquid level air gap general＜300mm.Because intermittently less, spinning-in operation is difficulty relatively, has restricted the increase of spinneret orifice quantity, the multipotency of spinneret orifice is to 30000 holes.
And above wet method is spun or dried these the two kinds of methods of method that squirt all have a common shortcoming, all adopts the coagulating bath circulatory system of big bath raio to guarantee coagulation bath concentration Deviation Control.
With regenerated celulose fibre technology is example, if fluctuation of concentration is controlled at ± 0.2%, and guarantee to bathe the constant relatively of temperature, as follows according to the internal circulating load computing formula of the coagulating bath of classics:
The internal circulating load of coagulating bath (Q)=stoste is brought coagulation bath (W)/concentration control deviation (e) into
The solvent of bringing in the coagulating bath with stoste is 1m
3/ h calculates, in order to keep the coagulating bath fluctuation of concentration, minimal circulation amount=1 ÷ 0.2%=500m
3/ h.At least need to dispose 500m
3/ h circulating pump and about 100m
3Storage tank.Therefore, the investment of required energy resource consumption of solvent recovery cycle and deposit equipment is all considerable.
Summary of the invention
Patent of the present invention technical problem to be solved provides a kind of LYOCELL fibre spinning coagulation forming equipment, adopt the vertical chamber of solidifying to replace coagulating tank, with atomising device the spinning solution thread that pushes out by spinnerets is cooled off in fog, promptly reduce the stoste thread and solidified needed boundling body lotion internal circulating load, improved again and singly spun an output, and reduced equipment and construction investment.
A kind of LYOCELL fibre spinning coagulation forming equipment, comprise measuring pump, filter, spinnerets, boundling bath and drawing-off bath, in the described boundling bath seal wire slewing rollers are housed, between boundling bath and the drawing-off bath godet roller is housed, described spinnerets be positioned at the boundling bath directly over, also be equipped with between described spinnerets below and the boundling bath top and solidify the chamber, the described chamber of solidifying is vertical, its upper end open is left the air gap that spinnerets leaves certain altitude, what solidify the chamber is equipped with some groups of atomizers over against two inboards, and atomizer connects measuring pump by medial launder.
The described lower end, chamber of solidifying is installed in boundling bath limit, and operating surface side and boundling bath limit are connected as a single entity, and the base, both sides is opened wide in addition.
The described chamber upper end open of solidifying is 20～100mm from the air gap height of spinnerets.
Described spinnerets is a rectangle multiple-unit multiple spinneret, and the spinnerets hole count is 1000～200000 holes
The shared measuring pump of described plurality of rows atomizer.
Described measuring pump has a plurality of, and every measuring pump is supplied the atomizer that body lotion is given different rows, the body lotion concentration homogeneous of same fog discharge nozzle respectively.
The described chamber of solidifying is rectangular column type height 300～800mm, and three side sealing closes, and one side is provided with the actuating doors of openable glazed form.
The chamber of solidifying of upright mist formula is adopted in coagulating bath of the present invention, and a part of heat is taken away with downward natural flow air, has reduced the atomizing body lotion and has brought heat in the boundling bath into; According to the fiberizing situation, the ejection liquid allotment amount that will atomize is controlled to minimum, both can save cooled and solidified body lotion institute chilling requirement, can improve the concentration that reclaims solvent again.Do not need to keep the constant temperature and the permanent concentration of coagulation bath with the big bath raio control method of tradition.The purpose of boundling body lotion circulation is that to keep in the boundling bath moment concentration even, do not need to consider again the stable of body lotion change in concentration and variations in temperature, the capacity of circulating pump and body lotion storage tank all can dwindle 80～90%, has saved equipment investment and construction investment, has reduced operating cost.
Spinnerets of the present invention makes it can only change the unit that damages the place, hole after the part hole is damaged by rectangle multicell combined type design form, therefore, has improved spinnerets overall service life, has saved production cost; Adopt the solution distributing pipe to enter each unit spinnerets simultaneously, guaranteed solution extrusion pressure distributed uniform under high viscosity, therefore, the uniformity of spinning fiber number improves.
Another characteristics of the present invention are: adopt the rectangle spinnerets, in case after the technology adjustment is optimized, singly spin an output as long as increase the element number of spinnerets length direction if need to increase, width remains unchanged.The quantity of solidifying its spray nozzle installation of the also corresponding increase in chamber that fiber passes through gets final product, and the flow of ejection and flow velocity, temperature and concentration all will remain unchanged, and controlling of production process is very convenient, has saved the cost and the cycle of commissioning test run greatly.
Description of drawings
Fig. 1 is a wet method spinning equipment structural representation;
Fig. 2 is the dried method device structure schematic diagram that squirts;
Fig. 3 solidifies formula staple fibre former structural representation for the present invention.
Among the figure: 1 solution distributing pipe, 2 measuring pumps, 3 filters, 4 spinneretss, 5 solidify chamber, 6 boundling baths, 7 drawing-off baths, 8 seal wire slewing rollers, 9 godet rollers, 10 air gaps, 11 atomizers, 12 medial launders, 13 head tanks, 14 coagulating tanks.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's statement, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As shown in Figure 3, a kind of formula staple fibre former that solidifies, comprise measuring pump 2, filter 3, spinnerets 4, solidify chamber 5, boundling bath 6 and drawing-off bath 7, measuring pump 2 connects the solution distributing pipe 1 of supply spinning material, described spinnerets 4 is a rectangle multiple-unit multiple spinneret, width is 100～300mm, and length is 250～16000mm, and the spinneret orifice number is 1000～200000 holes; Adopt solution distributor a plurality of molten (melting) body inlet, even with molten (melting) body pressure distribution that guarantees each unit;
The described chamber 5 of solidifying is vertical, when the rectangular column type structure of employing, and height 300～800mm, operate simultaneously both sides relatively, also can operate by single face, mainly decides according to the length and the convenient of operation of spinnerets; Two side-closed of atomizer are housed, the openable two fan glazed door up and down that stud with are established in the two sides that can be used as operating surface, be convenient to observe the situation after spinnerets 4 is left in the spinning solution ejection after the top glass window is opened, the bottom glass window is convenient to spinning-in operation after opening.In the described boundling bath 6 seal wire slewing rollers 8 are housed, between boundling bath 6 and the drawing-off bath 7 godet roller 9 is housed, described spinnerets 4 be positioned at boundling bath 6 directly over, the described chamber 5 of solidifying is between spinnerets 4 and boundling bath 6, it can freely regulated height be the air gap 10 of 20～100cm that its upper end open leaves that spinnerets 4 leaves, side that the lower ending opening place links to each other with boundling bath 6 and boundling bath limit are connected as a single entity, and prevent that the body lotion that solidifies in the chamber 5 from spilling, and the base, both sides is opened wide in addition; Air gap 10 can quicken strand surface solidification speed, improves the spinning hauling speed, and the refrigerating gas in the air gap can be carried air by pipeline for room air also can adopt the constant-temperature constant-humidity air-conditioner device.
At least 2 row's (group) atomizers 11 are equipped with on the inboard relative both sides of solidifying chamber 5, every group of atomizer 11 is positioned on the same horizontal plane, every group of atomizer 11 can be respectively with one independently measuring pump 2 link to each other also can a shared measuring pump 2, guarantee the body lotion concentration homogeneous in the same group of atomizer, between atomizer 11 and the measuring pump 2 medial launder 12 is housed, solidify atomizer 11 across of 5 inwall both sides, chamber or be staggered, spray relatively, direction is over against vertical descending stoste thread (strand), between the atomizer 11 spacing can about, about adjust; The flow angle of the design consideration atomizer 11 of atomizer 11 quantity is at vertical and all essential all strands that cover of horizontal direction, to guarantee that every rhizoid bar is in downward running, each, the strand surface all attached by the body lotion droplet moment, form very thin liquid film, the atomizer 11 of every group of both sides horizontal symmetrical distribution provides body lotion from same measuring pump 2, the ejection pressure of each nozzle, flow, temperature, concentration all equate, guarantee each horizontal direction, the body lotion droplet is identical to the impulsive force of the moment on strand surface with spray volume.
Solidifying chamber 5 sealings is installed on the boundling bath 6.Body lotion only comes from the solvent of separating out in atomized liquid and the spinning solution, therefore, by certain process means, it is fully feasible controlling in the needed scope of dissolution process that its concentration and temperature make it to satisfy substantially the stoste preparation: boundling bath 6 accepts to solidify the body lotion of the high concentration that chamber 5 strand bands get off, regularly quantitatively send back to head tank 13 recyclings through circulating pump, the body lotion spray volume that solidifies chamber 5 then requires to design according to solidifying process, the design of spray volume is controlled at 1～3 times of calculated value, has saved the volume and the jumbo circulating pump of the coagulation bath storage tank of viscose process.
The present invention is very accurate because of the flow-control of atomization quantity, and only 1～3 of calculated value times, therefore, the needed amount of cooling water of cooling atomizing solidification liquid seldom.
Whenever the spinneret orifice number that spins the position can reach 200000 holes at most, and spinning speed can reach 200～350m/min, singly spins a boundling total denier and reaches as high as 40 * 10
4Dtex.Suppose that producing 1.0 ten thousand tons of 2.22dtex * 51mm staple fibre per year calculates: the existing dried method that squirts adopts spinneret orifice 30000 holes, and spinning speed 100m/min meter is if need to be equipped with 30 spinning stations.200000 hole spinneretss of the present invention during spinning speed 200m/min, as long as be equipped with 3 spinning stations, reduce occupation area of equipment greatly, have shortened the length and the construction investment of spinning workshop.
Claims (8)
1. LYOCELL fibre spinning coagulation forming equipment, comprise measuring pump, filter, spinnerets, boundling bath and drawing-off bath, in the described boundling bath seal wire slewing rollers are housed, between boundling bath and the drawing-off bath godet roller is housed, described spinnerets be positioned at the boundling bath directly over, it is characterized in that: also be equipped with between described spinnerets below and the boundling bath top and solidify the chamber, the described chamber of solidifying is vertical, its upper end open is left the air gap that spinnerets leaves certain altitude, what solidify the chamber is equipped with the plurality of rows atomizer over against two inboards, and atomizer connects measuring pump by medial launder.
2. LYOCELL fibre spinning coagulation forming equipment as claimed in claim 1 is characterized in that: the described lower end, chamber of solidifying is installed in boundling bath limit, and wherein both sides and boundling bath limit are connected as a single entity relatively, and the base, both sides is opened wide in addition.
3. LYOCELL fibre spinning coagulation forming equipment as claimed in claim 1 or 2 is characterized in that: the described chamber upper end open of solidifying is 20～100mm from the air gap height of spinnerets.
4. LYOCELL fibre spinning coagulation forming equipment as claimed in claim 3 is characterized in that: described spinnerets is a rectangle multiple-unit multiple spinneret, and the spinnerets hole count is 1000～200000 holes.
5. LYOCELL fibre spinning coagulation forming equipment as claimed in claim 4 is characterized in that: the shared measuring pump of described plurality of rows atomizer.
6. LYOCELL fibre spinning coagulation forming equipment as claimed in claim 4, it is characterized in that: described measuring pump has a plurality of, and every measuring pump is supplied the atomizer that body lotion is given different rows, the body lotion concentration homogeneous of same fog discharge nozzle respectively.
7. LYOCELL fibre spinning coagulation forming equipment as claimed in claim 4 is characterized in that: the described chamber of solidifying is rectangular column type, height 300～800mm, and one side is an operating surface, is provided with the actuating doors of openable glazed form.
8. LYOCELL fibre spinning coagulation forming equipment as claimed in claim 4 is characterized in that: the described chamber of solidifying is rectangular column type, and two side-closed of atomizer are equipped with in the inboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910055891XA CN101988219A (en) | 2009-08-04 | 2009-08-04 | LYOCELL fiber spinning coagulating molding equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910055891XA CN101988219A (en) | 2009-08-04 | 2009-08-04 | LYOCELL fiber spinning coagulating molding equipment |
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| CN101988219A true CN101988219A (en) | 2011-03-23 |
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|---|---|---|---|
| CN200910055891XA Pending CN101988219A (en) | 2009-08-04 | 2009-08-04 | LYOCELL fiber spinning coagulating molding equipment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630913A (en) * | 2015-02-05 | 2015-05-20 | 欣龙控股（集团）股份有限公司 | Spray cooling method for melt-blown non-woven production and device thereof |
| CN105671650A (en) * | 2016-04-20 | 2016-06-15 | 江苏广盛源科技发展有限公司 | Lyocell filament spinning box |
| CN106480521A (en) * | 2016-11-30 | 2017-03-08 | 南京右转信息科技有限公司 | Dry wet spinning machine |
| CN110872732A (en) * | 2018-08-30 | 2020-03-10 | 奥若泰克股份有限公司 | Method and device for spinning filaments by deflection |
| CN112774457A (en) * | 2019-11-01 | 2021-05-11 | 中国石油化工股份有限公司 | Polymer microfiltration membrane and preparation method and application thereof |
| CN113279072A (en) * | 2021-05-28 | 2021-08-20 | 吉林中晟达新材料科技发展有限公司 | Three-dimensional wet spinning solidification forming system of precursor yarn for carbon fiber |
| US11326283B2 (en) * | 2017-04-03 | 2022-05-10 | Lenzing Aktiengesellschaft | Nonwoven cellulose fiber fabric with homogeneously merged fibers |
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| JPH11229234A (en) * | 1998-02-20 | 1999-08-24 | Unitika Ltd | Polyester yarn for thread used for producing tatami and its production |
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| JPH11229234A (en) * | 1998-02-20 | 1999-08-24 | Unitika Ltd | Polyester yarn for thread used for producing tatami and its production |
| CN101218381A (en) * | 2005-07-06 | 2008-07-09 | 可隆株式会社 | Aromatic polyamide filament and method of manufacturing the same |
| DE102007031755A1 (en) * | 2006-08-02 | 2008-02-07 | Oerlikon Textile Gmbh & Co. Kg | Process and assembly to cool extruded hotmelt polymer fibers in cooling duct delivering warm ambient air |
Non-Patent Citations (1)
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630913A (en) * | 2015-02-05 | 2015-05-20 | 欣龙控股（集团）股份有限公司 | Spray cooling method for melt-blown non-woven production and device thereof |
| CN104630913B (en) * | 2015-02-05 | 2017-04-05 | 欣龙控股（集团）股份有限公司 | For the Spray Way and its device of melt blown non-woven production |
| CN105671650A (en) * | 2016-04-20 | 2016-06-15 | 江苏广盛源科技发展有限公司 | Lyocell filament spinning box |
| CN106480521A (en) * | 2016-11-30 | 2017-03-08 | 南京右转信息科技有限公司 | Dry wet spinning machine |
| US11326283B2 (en) * | 2017-04-03 | 2022-05-10 | Lenzing Aktiengesellschaft | Nonwoven cellulose fiber fabric with homogeneously merged fibers |
| CN110872732A (en) * | 2018-08-30 | 2020-03-10 | 奥若泰克股份有限公司 | Method and device for spinning filaments by deflection |
| CN110872732B (en) * | 2018-08-30 | 2022-02-15 | 奥若泰克股份有限公司 | Method and device for spinning filaments by deflection |
| TWI793257B (en) * | 2018-08-30 | 2023-02-21 | 奧地利商奧羅科技有限公司 | Method and device for spinning filaments with deflection |
| CN112774457A (en) * | 2019-11-01 | 2021-05-11 | 中国石油化工股份有限公司 | Polymer microfiltration membrane and preparation method and application thereof |
| CN112774457B (en) * | 2019-11-01 | 2022-08-19 | 中国石油化工股份有限公司 | Polymer microfiltration membrane and preparation method and application thereof |
| CN113279072A (en) * | 2021-05-28 | 2021-08-20 | 吉林中晟达新材料科技发展有限公司 | Three-dimensional wet spinning solidification forming system of precursor yarn for carbon fiber |
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Application publication date: 20110323 |