CN101654811A - Production process of refined cotton for cuprammonium rayon - Google Patents
Production process of refined cotton for cuprammonium rayon Download PDFInfo
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- CN101654811A CN101654811A CN200810048940A CN200810048940A CN101654811A CN 101654811 A CN101654811 A CN 101654811A CN 200810048940 A CN200810048940 A CN 200810048940A CN 200810048940 A CN200810048940 A CN 200810048940A CN 101654811 A CN101654811 A CN 101654811A
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Abstract
The invention discloses a production process of refined cotton for cuprammonium rayon. The production process comprises cotton slitting, mercerization, stewing, rinsing, roller compaction, drying andpacking, wherein linter with the length between 5 and 8mm is selected as a raw material during cotton slitting; during stewing, the temperature inside a spherical digester is controlled to be between158 and 165 DEG C and the pressure is controlled to be between 0.56 and 0.75MPa during carrying out second heating and a constant temperature is kept for 100 and 120 minutes; and during rinsing, the oxidation time is controlled to be between 30 and 40 minutes during twice bleaching. The production process has the advantages that the process effectively controls the fluctuation range of product polymerization degree to between 750 and 830; and by controlling the length of the selected raw fibre to between 5 and 8mm during cotton slitting, the process effectively increases the consistency rate of product fibre length and also improves the stability of chemical treatment of fibre in downstream factories, which are favorable for normal production in factories.
Description
Technical field
The present invention relates to the technical field of purified cotton production technology, more particularly relate to production process of refined cotton for cuprammonium rayon.
Background technology
The main raw material of producing ammonia copper wire is the cotton linters in the cotton, this cotton linters is immersed in the soda lye, use thermophilic digestion, washing, the bleaching back just becomes refining velveteen, add ammonium and Kocide SD dissolving stirring again and just become viscosity stoste, stoste is squeezed into fibrous in warm water by the hole of spinning plate, carry out spinning after regenerating by sulfuric acid, this material is the interior lining material of senior Western-style clothes and suit indispensability already in the Japanese market, reason is that it has good humidity absorption and release effect, with contact skin feel tender careful, so far still be in irreplaceable status, at present, the production technology of purified cotton is as follows:
1, opener: with the removal of impurities of loosening of the cotton linter of 1900Kg;
2, caustic dip: alkali lye is impregnated in the above-mentioned cotton linter full and uniformly;
3, boiling: with cotton linter: sodium hydroxide solution is 1: the ratio of 3.6-3.8 drops into it in rotary spherical digester, dallied then rotary spherical digester 10-20 minute, temperature in the rotary spherical digester is controlled at 60 ℃-80 ℃, then carry out heating up the first time, heating-up time is 35-40 minute, temperature in the rotary spherical digester is controlled at 114 ℃-116 ℃, and Pressure control is put little vapour when 0.2-0.42MPa, and putting the little vapour time is 5-10 minute, pressure has been arranged, then carry out heating up the second time, the heating-up time is 40-65 minute, and the temperature in the rotary spherical digester is controlled between 130 ℃-180 ℃, Pressure control is between 0.4-0.9MPa, constant temperature 80-100 minute then, the rotary spherical digester that stops operating at last amplified vapour, return alkali, discharging;
4, rinsing: water cleans material 40-50 minute that above-mentioned rotary spherical digester is emitted, when making its pH value for neutrality, add concentration and be 30% hydrochloric acid 25-28Kg and carried out pre-acid treatment 15-20 minute, bleach at twice then that (effective chlorine density of bleaching liquid is controlled at 1.2-1.4 ± 0.02g/L; PH value is 9.0-10.0, temperature is 37-40 ℃, oxidization time is 20-50 minute), wash 20-30 minute after floating with water, when pH value reaches 7-8, be that 30% hydrochloric acid 41-43Kg carried out acid treatment 10-25 minute with concentration again, carry out dechlorination with dodium thiosulfate 4-5Kg then and handled 5-15 minute, washed at last 45-50 minute, and made pH value reach neutral and get final product;
5, roll, dry and pack.
The purified cotton of adopting above-mentioned process to produce is used for producing the problem that mainly there are following two aspects in ammonia copper wire, and the one, the degree of polymerization index scope of beating is too big, is directed at wire drawing machine and goes wrong easily; The 2nd, the length uniformity rate ratio of fiber is lower, and in the process of producing ammonia copper wire, the unstable hole of reeling off raw silk from cocoons of stopping up easily of the chemical treatment of fiber has brought many troubles for downstream manufacturer.
Summary of the invention
Purpose of the present invention is exactly the uniformity rate height that to provide a kind of product fibre length in order to solve above-mentioned deficiency be 5-8mm, can also be effectively its degree of polymerization accurately be controlled at production process of refined cotton for cuprammonium rayon between the 750-830.
The technical solution that the present invention adopts in order to solve the problems of the technologies described above is as follows:
Production process of refined cotton for cuprammonium rayon comprises opener, caustic dip, boiling, rinsing, rolls, dries and pack, and in the opener process, it is the cotton linter of 5-8mm that raw material is selected length for use; In digestion process, the temperature when carrying out heating up for the second time in the rotary spherical digester is controlled between 158 ℃-165 ℃, Pressure control between 0.56-0.75MPa, constant temperature 100-120 minute then; In rinse cycle, the oxidization time during twice bleaching is 30-40 minute.
In digestion process, the temperature when carrying out heating up for the second time in the rotary spherical digester is controlled between 160 ℃-163 ℃, and Pressure control is between 0.60-0.70MPa, and constant temperature is 110 minutes then.
In rinse cycle, the oxidization time during twice bleaching is 38 minutes.
The beneficial effect that the present invention adopts above-mentioned technical solution to reach is: by in process of production, technological parameter in strict each technical process of control, just controlled the scope of beating of the product degree of polymerization effectively, its degree of polymerization is controlled between the 750-830, by the length of selected raw fiber being controlled in the 5-8mm when the opener, just effectively improved the uniformity rate of product fibre length, also just improve simultaneously the stability that downstream producer handles fibre chemistry, helped the ordinary production of producer.
The specific embodiment
Production process of refined cotton for cuprammonium rayon is as follows:
1, opener: with 1900Kg length is the removal of impurities of loosening of the cotton linter of 5-8mm;
2, caustic dip: alkali lye is impregnated in the above-mentioned cotton linter full and uniformly;
3, boiling: with cotton linter: sodium hydroxide solution is 1: the ratio of 3.6-3.8 drops into it in rotary spherical digester, dallied then rotary spherical digester 10-20 minute, temperature in the rotary spherical digester is controlled at 60 ℃-80 ℃, then carry out heating up the first time, heating-up time is 35-40 minute, temperature in the rotary spherical digester is controlled at 114 ℃-116 ℃, Pressure control is put little vapour when 0.2-0.42MPa, putting the little vapour time is 5-10 minute, and pressure has been arranged, then carry out heating up the second time, heating-up time is 40-65 minute, and the temperature in the rotary spherical digester is controlled between 158 ℃-165 ℃, and Pressure control is between 0.56-0.75MPa, constant temperature 100-120 minute then, optimum efficiency is that the temperature in the rotary spherical digester is controlled between 160 ℃-163 ℃, and Pressure control is between 0.60-0.70MPa, and constant temperature is 110 minutes then, the rotary spherical digester that stops operating at last amplifies vapour, return alkali, discharging;
4, rinsing: water cleans material 40-50 minute that above-mentioned rotary spherical digester is emitted, when making its pH value for neutrality, add concentration and be 30% hydrochloric acid 25-28Kg and carried out pre-acid treatment 15-20 minute, bleach at twice then that (effective chlorine density of bleaching liquid is controlled at 1.2-1.4 ± 0.02g/L; PH value is 9.0-10.0, temperature is 37-40 ℃, oxidization time is 30-40 minute, optimum efficiency is that oxidization time was controlled at 38 minutes), wash 20-30 minute after floating with water, when pH value reaches 7-8, be that 30% hydrochloric acid 41-43Kg carried out acid treatment 10-25 minute with concentration again, carry out dechlorination with dodium thiosulfate 4-5Kg then and handled 5-15 minute, washed at last 45-50 minute, make pH value reach neutral and get final product;
5, roll, dry and pack.
Claims (3)
1, production process of refined cotton for cuprammonium rayon comprises opener, caustic dip, boiling, rinsing, rolls, dries and pack, and it is characterized in that: in the opener process, it is the cotton linter of 5-8mm that raw material is selected length for use; In digestion process, the temperature when carrying out heating up for the second time in the rotary spherical digester is controlled between 158 ℃-165 ℃, Pressure control between 0.56-0.75MPa, constant temperature 100-120 minute then; In rinse cycle, the oxidization time during twice bleaching is 30-40 minute.
2, production process of refined cotton for cuprammonium rayon according to claim 1, it is characterized in that: in digestion process, temperature when carrying out heating up for the second time in the rotary spherical digester is controlled between 160 ℃-163 ℃, and Pressure control is between 0.60-0.70MPa, and constant temperature is 110 minutes then.
3, production process of refined cotton for cuprammonium rayon according to claim 1 and 2 is characterized in that: in rinse cycle, the oxidization time during twice bleaching is 38 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100489402A CN101654811B (en) | 2008-08-19 | 2008-08-19 | Production process of refined cotton for cuprammonium rayon |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100489402A CN101654811B (en) | 2008-08-19 | 2008-08-19 | Production process of refined cotton for cuprammonium rayon |
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| CN101654811A true CN101654811A (en) | 2010-02-24 |
| CN101654811B CN101654811B (en) | 2011-08-31 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957299A (en) * | 2010-08-18 | 2011-01-26 | 宜宾丝丽雅集团有限公司 | Method for detecting content of synthetic fibers in cotton linters |
| CN102286798A (en) * | 2010-06-17 | 2011-12-21 | 罗莱家纺股份有限公司 | Bemberg fiber and preparation method thereof |
| CN102321926A (en) * | 2011-08-05 | 2012-01-18 | 四川北方硝化棉股份有限公司 | Production method of refined cotton |
| CN102877343A (en) * | 2012-09-20 | 2013-01-16 | 无锡市凯利药业有限公司 | Improved technology for producing refined cotton |
| CN106544914A (en) * | 2015-09-22 | 2017-03-29 | 湖北金汉江精制棉有限公司 | Purified cotton process for cleanly preparing |
| CN106544761A (en) * | 2015-09-22 | 2017-03-29 | 湖北金汉江精制棉有限公司 | Purified cotton produces impurity removed system |
| CN114561823A (en) * | 2022-04-24 | 2022-05-31 | 永丞汉邦新材料股份有限公司 | Waste paper reducing mechanism for resource regeneration |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1684375A1 (en) * | 1989-10-10 | 1991-10-15 | Ивановский научно-исследовательский институт хлопчатобумажной промышленности | Continuous treatment of cotton fibrous material |
| CN1718874A (en) * | 2004-07-09 | 2006-01-11 | 周家贵 | Production technology of extrahigh viscosity refining cotton |
| CN1306112C (en) * | 2004-07-09 | 2007-03-21 | 周家贵 | Production technology of extra low viscose refined cotton |
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2008
- 2008-08-19 CN CN2008100489402A patent/CN101654811B/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286798A (en) * | 2010-06-17 | 2011-12-21 | 罗莱家纺股份有限公司 | Bemberg fiber and preparation method thereof |
| CN101957299A (en) * | 2010-08-18 | 2011-01-26 | 宜宾丝丽雅集团有限公司 | Method for detecting content of synthetic fibers in cotton linters |
| CN102321926A (en) * | 2011-08-05 | 2012-01-18 | 四川北方硝化棉股份有限公司 | Production method of refined cotton |
| CN102321926B (en) * | 2011-08-05 | 2013-10-30 | 四川北方硝化棉股份有限公司 | Production method of refined cotton |
| CN102877343A (en) * | 2012-09-20 | 2013-01-16 | 无锡市凯利药业有限公司 | Improved technology for producing refined cotton |
| CN106544914A (en) * | 2015-09-22 | 2017-03-29 | 湖北金汉江精制棉有限公司 | Purified cotton process for cleanly preparing |
| CN106544761A (en) * | 2015-09-22 | 2017-03-29 | 湖北金汉江精制棉有限公司 | Purified cotton produces impurity removed system |
| CN106544914B (en) * | 2015-09-22 | 2017-12-26 | 湖北金汉江精制棉有限公司 | Purified cotton process for cleanly preparing |
| CN114561823A (en) * | 2022-04-24 | 2022-05-31 | 永丞汉邦新材料股份有限公司 | Waste paper reducing mechanism for resource regeneration |
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| CN101654811B (en) | 2011-08-31 |
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Owner name: ZHONGXIANG JINHANJIANG CELLULOSE CO., LTD. Free format text: FORMER OWNER: ZHONGXIANG CITY JINHANJIANG CELLULOSE CO., LTD. Effective date: 20110518 |
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Free format text: CORRECT: ADDRESS; FROM: 431900 ZHONGXIANG JINHANJIANG CELLULOSE CO., LTD., NO. 117, HENGGENG STREET, ZHONGXIANG CITY, HUBEI PROVINCE TO: 431900 JINHANJIANG CELLULOSE CO., LTD., JINHANJIANG AVENUE, ZHONGXIANG CITY, HUBEI PROVINCE |
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Effective date of registration: 20110518 Address after: 431900 Zhongxiang city of Hubei province Jiang Road, Jin Hanjiang Kim Han refined cotton Co. Ltd. Applicant after: Zhongxiang Jinhanjiang Cellulose Co.,Ltd. Address before: 431900 Zhongxiang city of Hubei province Heng Geng Street No. 117 Zhongxiang Jinhan Jiang cellulose Co. Ltd. Applicant before: Zhongxiang City Jinhanjiang Cellulose Co., Ltd. |
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