CN103266357A - Production technology of refining cottons - Google Patents
Production technology of refining cottons Download PDFInfo
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- CN103266357A CN103266357A CN2013101407044A CN201310140704A CN103266357A CN 103266357 A CN103266357 A CN 103266357A CN 2013101407044 A CN2013101407044 A CN 2013101407044A CN 201310140704 A CN201310140704 A CN 201310140704A CN 103266357 A CN103266357 A CN 103266357A
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- steaming
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- slurries
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Abstract
The invention relates to a production technology of refining cottons. The technology comprises selecting cotton linters as raw materials, using a sodium hydroxide solution to spray the cotton linters, squeezing the cotton linters; putting the squeezed cotton linters into steaming balls, adding sodium hydroxide, rotating the steaming balls and steaming for 15-30 minutes under 10-30 DEG C, heating to 110-120 DEG C, rotating the steaming balls and steaming for 30-45 minutes, heating to 125-145 DEG C, rotating the steaming balls and steaming for 20-30 minutes; performing pulp washing for the steamed raw materials by an alkaline method, pre-beaching, adding dilute sulfuric acid for a neutralization reaction; adding a hydrogen peroxide bleaching solution into the pulp after the neutralization reaction for bleaching, thereby obtaining a white pulp; squeezing the white pulp, drying, packaging and storing. The reaction is relatively easy to operate; the steaming balls are steamed under different times for several times, with different steaming time for each time, so that the steaming is relatively full; and the blenching is carried out for two times, and thus is relatively thorough.
Description
Technical field
The present invention relates to the production technology of a kind of purified cotton, belong to textile technology field.
Background technology
In the domestic textile industry, the method for producing purified cotton is to adopt the high alkaline boiling of high temperature, and the traditional processing technology of chlorine bleach, boiling and bleaching be for up to 5,6 hours, the energy consumption height, and discharge capacity is big.Boiling is disposable finishing, and digestion time is long, and production efficiency is low, and the alkali lye consumption is big, and waste liquid is many, the refractory reason.Therefore, need provide a kind of new technical scheme to solve the problems referred to above.
Summary of the invention
The production technology that the purpose of this invention is to provide the purified cotton of a kind of processing ease, digestion time weak point.
The technical solution used in the present invention is:
The production technology of a kind of purified cotton may further comprise the steps:
A, to choose cotton linter be raw material, and fiber length through the opener shredding, can be cleaned out solid impurity in the cotton linter by picker between 5-7mm again;
B, be 2.5% sodium hydroxide solution with mass concentration, above-mentioned cotton linter is sprayed, spray time 10-30 minute, squeeze cotton linter again;
C, with above-mentioned through the squeezing after cotton linter put into rotary spherical digester, adding mass concentration is the NaOH of 3.5-4.0%, under 10-30 ℃ of condition, rotate rotary spherical digester boiling 15-30 minute, 110-120 ℃ of rising temperature, rotate rotary spherical digester boiling 30-45 minute, heat up 125-145 ℃ again, rotate rotary spherical digester boiling 20-30 minute;
Raw material behind d, the above-mentioned alkaline cooking carries out pulp washing, makes the slurries chlorinty remain on 0.18-0.2g/L, chlorination 30-45 minute;
E, the hydrogen peroxide bleaching liquid that adds mass concentration 2-3% in above-mentioned slurries carry out pre-bleaching, and temperature is controlled at 40-60 ℃, bleaching time 45-60 minute;
F, in the slurries of above-mentioned pre-bleaching, add dilute sulfuric acid and carry out neutralization reaction, time 30-45 minute;
The hydrogen peroxide bleaching liquid that adds mass concentration 5-6% in g, the slurries after above-mentioned neutralization reaction is bleached, and 10-30 ℃ of control temperature bleaching time 20-40 minute, gets white slurry;
H, with above-mentioned white slurry squeezing, oven dry, packing warehouse-in.
Add dilute sulfuric acid in the slurries of described f step pre-bleaching and carry out neutralization reaction, getting pH value is 7-8.
Advantage of the present invention: this reaction is than being easier to operation, rotary spherical digester boiling gradation under different temperature is finished, each time digestion time difference, make the more abundant of boiling, bleaching is divided into twice to be carried out, and pilot process adds acid, the boiling alkali lye that can neutralize excessive, because carried out pre-bleaching, bleaching time was shorter afterwards, and also bleaching is more thorough.
The specific embodiment
The following examples are in order to illustrating the present invention, but do not limit the present invention.
Embodiment 1
The production technology of a kind of purified cotton may further comprise the steps:
A, to choose cotton linter be raw material, and fiber length through the opener shredding, can be cleaned out solid impurity in the cotton linter by picker between 5mm again;
B, be 2.5% sodium hydroxide solution with mass concentration, above-mentioned cotton linter sprayed that spray time 10 minutes squeezes cotton linter again;
C, above-mentioned cotton linter after squeezing is put into rotary spherical digester, add mass concentration and be 3.5% NaOH, under 10 ℃ of conditions, rotate rotary spherical digester boiling 15 minutes, 110 ℃ of rising temperature are rotated rotary spherical digester boiling 30 minutes, heat up 125 ℃ again, rotate rotary spherical digester boiling 20 minutes;
Raw material behind d, the above-mentioned alkaline cooking carries out pulp washing, makes the slurries chlorinty remain on 0.18g/L, chlorination 30 minutes;
E, the hydrogen peroxide bleaching liquid that adds mass concentration 2% in above-mentioned slurries carry out pre-bleaching, and temperature is controlled at 40 ℃, bleaching time 45 minutes;
F, add dilute sulfuric acid carry out neutralization reaction in the slurries of above-mentioned pre-bleaching, time 30-45 minute, getting pH value was 7;
The hydrogen peroxide bleaching liquid that adds mass concentration 5% in g, the slurries after above-mentioned neutralization reaction is bleached, 10 ℃ of control temperature, and bleaching time 20 minutes gets white slurry;
H, with above-mentioned white slurry squeezing, oven dry, packing warehouse-in.
Embodiment 2
The production technology of a kind of purified cotton may further comprise the steps:
A, to choose cotton linter be raw material, and fiber length through the opener shredding, can be cleaned out solid impurity in the cotton linter by picker between 6mm again;
B, be 2.5% sodium hydroxide solution with mass concentration, above-mentioned cotton linter sprayed that spray time 20 minutes squeezes cotton linter again;
C, above-mentioned cotton linter after squeezing is put into rotary spherical digester, add mass concentration and be 3.7% NaOH, under 20 ℃ of conditions, rotate rotary spherical digester boiling 25 minutes, 115 ℃ of rising temperature are rotated rotary spherical digester boiling 38 minutes, heat up 132 ℃ again, rotate rotary spherical digester boiling 25 minutes;
Raw material behind d, the above-mentioned alkaline cooking carries out pulp washing, makes the slurries chlorinty remain on 0.19g/L, chlorination 38 minutes;
E, the hydrogen peroxide bleaching liquid that adds mass concentration 2.5% in above-mentioned slurries carry out pre-bleaching, and temperature is controlled at 50 ℃, bleaching time 52 minutes;
F, add dilute sulfuric acid carry out neutralization reaction in the slurries of above-mentioned pre-bleaching, time 30-45 minute, getting pH value was 7.5;
The hydrogen peroxide bleaching liquid that adds mass concentration 5.5% in g, the slurries after above-mentioned neutralization reaction is bleached, 20 ℃ of control temperature, and bleaching time 30 minutes gets white slurry;
H, with above-mentioned white slurry squeezing, oven dry, packing warehouse-in.
Embodiment 3
The production technology of a kind of purified cotton may further comprise the steps:
A, to choose cotton linter be raw material, and fiber length through the opener shredding, can be cleaned out solid impurity in the cotton linter by picker between 7mm again;
B, be 2.5% sodium hydroxide solution with mass concentration, above-mentioned cotton linter sprayed that spray time 30 minutes squeezes cotton linter again;
C, above-mentioned cotton linter after squeezing is put into rotary spherical digester, add mass concentration and be 4.0% NaOH, under 30 ℃ of conditions, rotate rotary spherical digester boiling 30 minutes, 120 ℃ of rising temperature are rotated rotary spherical digester boiling 45 minutes, heat up 145 ℃ again, rotate rotary spherical digester boiling 30 minutes;
Raw material behind d, the above-mentioned alkaline cooking carries out pulp washing, makes the slurries chlorinty remain on 0.2g/L, chlorination 45 minutes;
E, the hydrogen peroxide bleaching liquid that adds mass concentration 3% in above-mentioned slurries carry out pre-bleaching, and temperature is controlled at 60 ℃, bleaching time 60 minutes;
F, add dilute sulfuric acid carry out neutralization reaction in the slurries of above-mentioned pre-bleaching, 45 minutes time, getting pH value is 8;
The hydrogen peroxide bleaching liquid that adds mass concentration 6% in g, the slurries after above-mentioned neutralization reaction is bleached, 30 ℃ of control temperature, and bleaching time 40 minutes gets white slurry;
H, with above-mentioned white slurry squeezing, oven dry, packing warehouse-in.
This reaction is than being easier to operation, and rotary spherical digester boiling gradation under different temperature is finished, and is raise gradually by lower temperature, each time digestion time difference makes the more abundant of boiling, and bleaching is divided into twice and carries out, pilot process adds acid, the boiling alkali lye that can neutralize excessive makes that the alkali lye amount reduces in the waste liquid, reduces and pollutes waste liquid, because carried out pre-bleaching, bleaching time was shorter afterwards, and the temperature that suits in the bleaching process makes that bleaching is faster, more thorough.
Claims (2)
1. the production technology of a purified cotton is characterized in that, may further comprise the steps:
A, to choose cotton linter be raw material, and fiber length through the opener shredding, can be cleaned out solid impurity in the cotton linter by picker between 5-7mm again;
B, be 2.5% sodium hydroxide solution with mass concentration, above-mentioned cotton linter is sprayed, spray time 10-30 minute, squeeze cotton linter again;
C, with above-mentioned through the squeezing after cotton linter put into rotary spherical digester, adding mass concentration is the NaOH of 3.5-4.0%, under 10-30 ℃ of condition, rotate rotary spherical digester boiling 15-30 minute, 110-120 ℃ of rising temperature, rotate rotary spherical digester boiling 30-45 minute, heat up 125-145 ℃ again, rotate rotary spherical digester boiling 20-30 minute;
Raw material behind d, the above-mentioned alkaline cooking carries out pulp washing, makes the slurries chlorinty remain on 0.18-0.2g/L, chlorination 30-45 minute;
E, the hydrogen peroxide bleaching liquid that adds mass concentration 2-3% in above-mentioned slurries carry out pre-bleaching, and temperature is controlled at 40-60 ℃, bleaching time 45-60 minute;
F, in the slurries of above-mentioned pre-bleaching, add dilute sulfuric acid and carry out neutralization reaction, time 30-45 minute;
The hydrogen peroxide bleaching liquid that adds mass concentration 5-6% in g, the slurries after above-mentioned neutralization reaction is bleached, and 10-30 ℃ of control temperature bleaching time 20-40 minute, gets white slurry;
H, with above-mentioned white slurry squeezing, oven dry, packing warehouse-in.
2. the production technology of a kind of purified cotton according to claim 1 is characterized in that: add dilute sulfuric acid in the slurries of described f step pre-bleaching and carry out neutralization reaction, getting pH value is 7-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101407044A CN103266357A (en) | 2013-04-23 | 2013-04-23 | Production technology of refining cottons |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101407044A CN103266357A (en) | 2013-04-23 | 2013-04-23 | Production technology of refining cottons |
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| CN103266357A true CN103266357A (en) | 2013-08-28 |
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| CN2013101407044A Pending CN103266357A (en) | 2013-04-23 | 2013-04-23 | Production technology of refining cottons |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106192368A (en) * | 2016-07-18 | 2016-12-07 | 南通富之岛寝具发展有限公司 | A kind of production technology of dyed cotton |
| CN106192359A (en) * | 2016-07-18 | 2016-12-07 | 南通富之岛寝具发展有限公司 | A kind of production technology of linen cotton |
| CN107100028A (en) * | 2017-05-05 | 2017-08-29 | 东至县鸿棉工贸有限责任公司 | A kind of production method of refined cotton linter |
| CN109112873A (en) * | 2018-08-13 | 2019-01-01 | 薛润林 | The method of twin-screw extruder production purified cotton |
| CN116446208A (en) * | 2022-09-07 | 2023-07-18 | 盐城锦阳新材料科技有限公司 | Production process of high-whiteness refined cotton |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1718917A (en) * | 2004-07-09 | 2006-01-11 | 周家贵 | Production technology of extra low viscose refined cotton |
| CN101294358A (en) * | 2008-06-10 | 2008-10-29 | 山东银鹰化纤有限公司 | Technique for preparing cotton pulp with high-degree of polymerization for cellulose ether |
| CN101381896A (en) * | 2008-10-05 | 2009-03-11 | 山东海龙股份有限公司 | Cotton stalk dissolving pulp and method for making same |
| CN102251422A (en) * | 2011-05-30 | 2011-11-23 | 四川北方硝化棉股份有限公司 | Method for producing ultrahigh-viscosity refined cotton |
| CN102926269A (en) * | 2012-12-04 | 2013-02-13 | 新疆光大山河化工科技有限公司 | Preparation method of high-whiteness refined cotton |
-
2013
- 2013-04-23 CN CN2013101407044A patent/CN103266357A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1718917A (en) * | 2004-07-09 | 2006-01-11 | 周家贵 | Production technology of extra low viscose refined cotton |
| CN101294358A (en) * | 2008-06-10 | 2008-10-29 | 山东银鹰化纤有限公司 | Technique for preparing cotton pulp with high-degree of polymerization for cellulose ether |
| CN101381896A (en) * | 2008-10-05 | 2009-03-11 | 山东海龙股份有限公司 | Cotton stalk dissolving pulp and method for making same |
| CN102251422A (en) * | 2011-05-30 | 2011-11-23 | 四川北方硝化棉股份有限公司 | Method for producing ultrahigh-viscosity refined cotton |
| CN102926269A (en) * | 2012-12-04 | 2013-02-13 | 新疆光大山河化工科技有限公司 | Preparation method of high-whiteness refined cotton |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106192368A (en) * | 2016-07-18 | 2016-12-07 | 南通富之岛寝具发展有限公司 | A kind of production technology of dyed cotton |
| CN106192359A (en) * | 2016-07-18 | 2016-12-07 | 南通富之岛寝具发展有限公司 | A kind of production technology of linen cotton |
| CN107100028A (en) * | 2017-05-05 | 2017-08-29 | 东至县鸿棉工贸有限责任公司 | A kind of production method of refined cotton linter |
| CN109112873A (en) * | 2018-08-13 | 2019-01-01 | 薛润林 | The method of twin-screw extruder production purified cotton |
| CN116446208A (en) * | 2022-09-07 | 2023-07-18 | 盐城锦阳新材料科技有限公司 | Production process of high-whiteness refined cotton |
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Application publication date: 20130828 |