CN1032489C - Method for manufacturing viscose staple fibers - Google Patents
Method for manufacturing viscose staple fibers Download PDFInfo
- Publication number
- CN1032489C CN1032489C CN 91104720 CN91104720A CN1032489C CN 1032489 C CN1032489 C CN 1032489C CN 91104720 CN91104720 CN 91104720 CN 91104720 A CN91104720 A CN 91104720A CN 1032489 C CN1032489 C CN 1032489C
- Authority
- CN
- China
- Prior art keywords
- spinning
- grams per
- dipping
- acid
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000835 fiber Substances 0.000 title claims abstract description 16
- 229920000297 Rayon Polymers 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000009987 spinning Methods 0.000 claims abstract description 20
- 239000002253 acid Substances 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000007598 dipping method Methods 0.000 claims abstract description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 32
- 238000005516 engineering process Methods 0.000 claims description 15
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 239000003513 alkali Substances 0.000 abstract description 25
- 239000003292 glue Substances 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000003825 pressing Methods 0.000 abstract description 5
- 230000032683 aging Effects 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000005470 impregnation Methods 0.000 abstract 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 13
- 229920002488 Hemicellulose Polymers 0.000 description 5
- 229920002678 cellulose Polymers 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 150000001868 cobalt Chemical class 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000006277 sulfonation reaction Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 206010011469 Crying Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011086 glassine Substances 0.000 description 1
- 238000002803 maceration Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Artificial Filaments (AREA)
Abstract
The invention provides a preparation of viscose with low alkali-fiber ratio of viscose staple fiber and a low acid spinning process matched with the same, which is characterized in that the process route of dipping → pressing → secondary dipping → secondary pressing → crushing → aging is adopted for glue making. The secondary impregnation is carried out in an impregnation barrel by adopting a large bath ratio; the spinning adopts a low-acid high-salt spinning process, and relevant parameters of secondary dipping alkali liquor and a spinning acid bath are newly adjusted. The invention has the advantages of short process flow, simple equipment, convenient industrial production, reduced consumption, improved product quality and good practical value.
Description
The invention belongs to the production technical field of viscose staple fibre, particularly the compregnate powder double-steeping technology of adhesive-preparing technology and corresponding spinning technique technology thereof.
Finland scholar HSihtola discloses the double-steeping technical scheme of producing the viscose staple fibre adhesive-preparing technology on Tappi periodical in 1969, this scheme is emphasized removing of hemicellulose on principle, adopt the process route of the dipping → squeezing → experienced → squeezing dipping → second time second time on technology.Because double-steeping after experienced, so cause the twice pressing difficulty and be easy to generate whitewashing, increases the hemicellulose in the alkali lye, dialysis machine etc. certainly will to be increased for removing hemicellulose, not only equipment is huge, the practical application difficulty, and be difficult to form suitability for industrialized production.Japan special permission clear 52～40589 disclosed technical schemes have proposed improvement to Finland's double-steeping technology, and squeezing for the first time changes light pressure (crying precompressed again) into, and place after the double-steeping experienced.This invention is applied on continuous screw press.The existing above-mentioned functions of the continuous screw press of the Switzerland Maurer company that chemical fibre factory, China Jiujiang introduces, its method is that the alkali cellulose after flooding is for the first time evenly assisted on filter screen, carry out the precompressed first time,, and enter squeezing pulverizing for the second time subsequently with the weak lye spray.The major defect of this technology is owing to be light pressure for the first time, so when residual alkali calibration normal pressure presses in the alkali cellulose is many, be on filter screen, to carry out fountain because of flooding for the second time again, so dipping is not thorough, can not be with the hemicellulose stripping, do not reach due dipping effect, the consumption of the unit's of causing finished product increases, deficiencies such as economic benefit reduction.
The objective of the invention is to finish low alkali fibre than the preparation of viscose glue and the spining technology that cooperates with it thereof, provide that a kind of equipment is simple, technological process short, consumption is low, quality is high and be convenient to the manufacture method of the short rayon fiber of suitability for industrialized production again.
The present invention has done scientific and reasonable improvement to existing glue and spinning technique.On inventive principle, emphasize the reduction of the free alkali in the alkali fibre, on technical scheme, proposed a kind of new adhesive-preparing technology route, thereby can shorten flow process, simplified apparatus is convenient to realize suitability for industrialized production again; Simultaneously, process and parameter to double-steeping have been done new adjustment and control, removing of all even hemicelluloses that are beneficial to flood, and guarantee that the alkali cellulose swelling capacity had both helped the raising of sulfonating reaction and viscose quality is unlikely to undue swelling again and causes the squeezing difficulty.The adhesive-preparing technology route of this programme is a catalyst also with after experiencedly being placed on squeezing for the second time, pulverizing, and with the cobalt salt, quickens ageing time.Because the fine ratio of the viscose glue alkali of this programme is well below the made viscose glue of conventional method, so in spinning, adopted the spinning technique of the high salt of low acid, particularly the molten parameter of spinning acid has been done new adjustment, to cooperate above-mentioned low alkali fibre, reducing the further purpose of optimizing the quality of product under the prerequisite that consumes, raises the efficiency thereby reach than adhesive-preparing technology.This programme is characterised in that adhesive-preparing technology adopts the dipping → squeezing → squeezing → pulverizing dipping → second time second time → experienced process route, and wherein, double-steeping adopts big molten ratio and carries out in treating tank, and the technological parameter control of its steeping liquor is as follows:
A, NaON concentration 150～170 grams per liters
45～60 ℃ of b, NaOH temperature
C, CoCl
2Concentration 0.05～0.1 grams per liter
Low sour spinning technique is adopted in spinning, and the molten technological parameter of its spinning acid is controlled as follows:
A, H
2SO
4Concentration 70～90 grams per liters
B, ZnSO
4Concentration 10～13 grams per liters
45～50 ℃ of c, acid liquor temperatures
D, acid solution proportion 1.26～1.32
E, acid solution drop＜8 grams per liters
The present invention has successfully realized preparation and the corresponding low sour spinning technique of low alkali fibre than viscose glue, and its advantage is that the short equipment of technological process is simple, is convenient to realize suitability for industrialized production, has particularly reduced consumption, has improved the quality of product.Compare with existing process method, one ton of viscose staple fibre of every production can be saved 160 kilograms in caustic soda, 220 kilograms in sulfuric acid, 45 kilograms of sulfur dioxide, and economic benefit is very remarkable.The present invention also can be advantageously used in having the programming automation control of the multiple computer desk sulfonation machine of shared engineering, also can be applicable on the glassine paper industrial production line, has the good social benefit.
Below, will provide embodiments of the invention according to aforesaid process route and technological parameter.
One. adhesive-preparing technology:
The mixed dregs of rice＞3 batches
Feed dregs of rice speed: 14.5 kilograms/minute
Concentration of lye: 240 grams/thousand
Alkali liquid temperature: 50 ℃
Stock pump rotating speed: 1
#～44 rev/mins; 2
#～46 rev/mins;
3
#70 rev/mins
The assistant soakage time: 45 minutes
Pressure balance barrel liquid level 1/2
Balance barrel pressure 0.8 kilograms per centimeter
2
Squeezing transmission rotating speed: 1
#～55 rev/mins; 2
#～54 rev/mins;
(single pressing adopt conventional method with maximum program remove free alkali lye)
Fine composition of alkali: first fibre 29%; Contain alkali 17%;
Double-steeping concentration of lye: 160 grams per liters
Double-steeping alkali liquid temperature: 50 ℃
Add CoCl
2Concentration: 0.06 grams per liter
Secondary stock pump rotating speed: 46 rev/mins
Twice pressing transmission speed: 50 rev/mins
Secondary alkali lye is formed: first fibre 30%; Contain alkali 13%
Ageing time: 1 hour
Experienced temperature: 35 ℃
The adding method that adopts cobalt salt catalysis is earlier with CoCl
26H
2O is made into the mother liquor of 25 grams per liters, the dilution back adds in the steeping liquor with measuring pump, experienced employing belt-type ageing chamber, its volume is that the sulfonation of 21.61 * 2.68 * 3.12 (cubic meters) after experienced can be controlled by computer program from the overall process that is dosed into discharging, other back dissolving, mix, first filtration (middle bucket), two roads filter (middle bucket), deaeration, process of filtering before spinning etc. and technological parameter and equipment are all basic identical with prior art, because alkali cellulose is behind lighter double-steeping alkali lye dipping, to the concentration of alkali lye be improved, for keeping original concentration, should constantly shift out the part steeping liquor.1 ton of viscose of general every production will shift out 50 kilograms caustic soda, and the alkali lye that shifts out is passed through sloping plate deposition, an alkali lye of maceration extract part reuse preparation on top, and a part is sent the pulp workshop to make boiling alkali and is used.The emptying regularly of precipitation part.
Two, spinning technique:
The molten technological parameter of the spinning acid of present embodiment is:
H
2SO
478 grams per liters
ZnSO
412 grams per liters
Temperature 47 grams per liters
Proportion 1.29
Drop 7 grams per liters
Spinning speed in other relevant draft process, the shower nozzle drawing-off, head product drawing-off, two product drawing-offs, total draft, plasticizing acid are dense, the plasticizing-bath temperature, plastify groove steam pressure, carbon disulfide recovery air cooling temperature and liquid cooling temperature and aftertreatment technology equipment and parameter all basic identical with prior art.
Claims (1)
1. the manufacture method of a viscose staple fibre is characterized in that:
One, adhesive-preparing technology adopts the dipping → squeezing → squeezing → pulverizing dipping → second time second time → experienced process route, and wherein, double-steeping adopts big bath raio and carries out in treating tank, and the technological parameter control of its steeping liquor is as follows:
A, NaON concentration 150～170 grams per liters
45～60 ℃ of b, NaOH temperature
C, CoCl
2Concentration 0.05～0.1 grams per liter
Two, low sour spinning technique is adopted in spinning, and the technological parameter control of its spinning acid bath is as follows:
A, H
2SO
4Concentration 70～90 grams per liters
B, ZnSO
4Concentration 10～13 grams per liters
45～50 ℃ of c, acid liquor temperatures
D, acid solution proportion 1.26～1.32
E, acid solution drop＜8 grams per liters
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91104720 CN1032489C (en) | 1991-07-09 | 1991-07-09 | Method for manufacturing viscose staple fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91104720 CN1032489C (en) | 1991-07-09 | 1991-07-09 | Method for manufacturing viscose staple fibers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1059378A CN1059378A (en) | 1992-03-11 |
| CN1032489C true CN1032489C (en) | 1996-08-07 |
Family
ID=4906776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91104720 Expired - Fee Related CN1032489C (en) | 1991-07-09 | 1991-07-09 | Method for manufacturing viscose staple fibers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1032489C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417764C (en) * | 2006-09-08 | 2008-09-10 | 唐山三友集团化纤有限公司 | Ultrashort viscose fiber in paper making, and manufacturing method |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19707387C1 (en) * | 1997-02-25 | 1998-04-02 | Hoechst Ag | Production of viscose using one source of alkali for alkalisation |
| CN1094158C (en) * | 2001-07-27 | 2002-11-13 | 宜宾丝丽雅股份有限公司 | Once coagulating bath type prodn. of flat viscose fiber and its prpen. method |
| CN102154721B (en) * | 2011-03-02 | 2012-10-03 | 山东海龙股份有限公司 | Short-process low-energy-consumption production method of bamboo viscose fibers |
| CN102295705B (en) * | 2011-07-04 | 2013-03-27 | 山东雅美科技有限公司 | Method for preparing alkali cellulose by wet pulp method |
| CN102678922B (en) * | 2012-05-31 | 2015-01-28 | 慈溪博格曼密封材料有限公司 | Fiber packing preparation method |
| CN106498527A (en) * | 2016-09-23 | 2017-03-15 | 恒天海龙（潍坊）新材料有限责任公司 | A kind of process for producing high-wet-modulus fibre cellulose fiber |
-
1991
- 1991-07-09 CN CN 91104720 patent/CN1032489C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417764C (en) * | 2006-09-08 | 2008-09-10 | 唐山三友集团化纤有限公司 | Ultrashort viscose fiber in paper making, and manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1059378A (en) | 1992-03-11 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |