CN102817263A - Preparation method for purified cotton with extra-high viscosity - Google Patents
Preparation method for purified cotton with extra-high viscosity Download PDFInfo
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- CN102817263A CN102817263A CN2012102952560A CN201210295256A CN102817263A CN 102817263 A CN102817263 A CN 102817263A CN 2012102952560 A CN2012102952560 A CN 2012102952560A CN 201210295256 A CN201210295256 A CN 201210295256A CN 102817263 A CN102817263 A CN 102817263A
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Abstract
The invention discloses a preparation method for purified cotton with the extra-high viscosity. Cotton linter is used as raw material and is cooked by an alkaline process to obtain the purified cotton with the extra-high viscosity. The raw materials for preparing the purified cotton with the extra-high viscosity are in the following parts by weight: 1 part of cotton linter and 4 parts of NaOH solution of which the weight concentration is 2.5%. According to the preparation method for the purified cotton with the extra-high viscosity, which is disclosed by the invention, the cotton linter is used as the raw material, and the cotton linter is cooked by the alkaline process to obtain the purified cotton with the extra-high viscosity. The reprocessing difficulty and the ton consumption cost of the purified cotton are greatly lowered.
Description
Technical field
The present invention relates to the preparation method of a kind of extra-high-speed viscosity purified cotton.
Background technology
Purified cotton (Refined cotton) is to be raw material with the cotton linter, makes with extra care the white floccule of impurity such as form a kind of evenly loosened, no wood chip, bamboo bits, silt, greasy dirt, metal object through alkaline cooking, rinsing.Its main chemical compositions is cellulose, lignin and hemicellulose.It is made up of carbon, hydrogen, 3 kinds of elements of oxygen; The mass ratio of its composition: carbon 44.4%, hydrogen 6.17%, oxygen 49.39%, its density is generally L50-L56g/cm, specific heat capacity L30-L40kJ/ (kg ℃); Dissolve in the copper ammon solution, have good hydrophily and good adsorption property.Through subtraction boiling and the refining purified cotton of rinsing, has lower impurity content, higher swelling property and respond, viscosity and whiteness preferably.The basis is carried out in ether (ester) change that can be the later stage.
The ether product of purified cotton is mainly used in the thickener in fields such as the stuffing of producing food, medicine, toothpaste, building coating, oil, papermaking.Purified cotton is vast as raw material, the purposes of ether, esters product, have the good reputation of " industrial monosodium glutamate ".
Extra-high-speed viscosity purified cotton, the difficulty and the ton that can effectively reduce purified cotton reprocessing consume cost.And at present, domestic purified cotton viscosity is generally lower, generally is lower than 2450.
The preparation method of exploitation extra-high-speed viscosity purified cotton is imperative.
Summary of the invention
The technical issues that need to address of the present invention just are to overcome the defective of prior art, and the preparation method of a kind of extra-high-speed viscosity purified cotton is provided, and it uses cotton linter to be raw material, produce extra-high-speed viscosity purified cotton through alkaline cooking.Greatly reduce the difficulty and the ton consumption cost of purified cotton reprocessing.
For addressing the above problem, the present invention adopts following technical scheme:
The invention provides the preparation method of a kind of extra-high-speed viscosity purified cotton, said method is produced extra-high-speed viscosity purified cotton for being raw material with the cotton linter through alkaline cooking.
The proportioning raw materials of preparation extra-high-speed viscosity purified cotton is: 1 part of cotton linter, weight concentration are 4 parts of 2.5% NaOH solution;
Concrete preparation process is:
The first step; Opener slagging-off: through opener closely knit short flannel is unwrapped pine and be the fritter short flannel of nature diastole; Be beneficial to the follow-up processing bigger impurity of part that can be removed particle diameter simultaneously; Can the solid particle polluter in the short flannel be cleaned out through picker again, after cyclone dust removal is delivered to preimpregnation squeezing system;
In second step, preimpregnation squeezing: using weight concentration is 2.5% NaOH solution, through the continuous spray of row, squeeze through squeezer, alkali lye is fully contacted the cotton linter after the cyclonic separation with short flannel again;
The 3rd step, alkaline cooking: will add to rotary spherical digester through preimpregnation squeezing back short flannel and remaining alkali lye, through the steam bleeding 5 minutes half an hour that heats up, the steam bleeding 5 minutes half an hour that heats up again, heating up makes temperature the most always reach 132 ℃ half an hour again, and is incubated half an hour;
The 4th goes on foot, and squeezes through black wash and into floats the pond;
In the 5th step, chlorination makes the slurries chlorinty remain on 0.18g/L, chlorination 30min;
In the 6th step, bleaching makes slurries free alkali content remain on 0.05g/L, bleaching 45min;
In the 7th step, acidifying makes slurries acid content (H
+) remain on 0.2g/L, acidifying 30min;
The 8th step is through white slurry squeezing, oven dry, packing warehouse-in.
The present invention uses cotton linter to be raw material, produces extra-high-speed viscosity purified cotton through alkaline cooking.Greatly reduce the difficulty and the ton consumption cost of purified cotton reprocessing.
The purified cotton that the present invention makes; Viscosity is more than 800mPas; Because of it has higher viscosity than conventional purified cotton cotton; When it carries out production of cellulose ether, can not need add crosslinking agent, do not need high vacuum, need not pass through the inert gas replacement of repeated multiple times, can obtain the cellulose ether of viscosity higher.Can greatly reduce the difficulty and the ton consumption cost of purified cotton reprocessing.
The specific embodiment
The proportioning raw materials of preparation extra-high-speed viscosity purified cotton is: 1 part of cotton linter, weight concentration are 4 parts of 2.5% NaOH solution;
Concrete preparation process is:
The first step; Opener slagging-off: through opener closely knit short flannel is unwrapped pine and be the fritter short flannel of nature diastole; Be beneficial to the follow-up processing bigger impurity of part that can be removed particle diameter simultaneously; Can the solid particle polluter in the short flannel be cleaned out through picker again, after cyclone dust removal is delivered to preimpregnation squeezing system;
In second step, preimpregnation squeezing: using weight concentration is 2.5% NaOH solution, through the continuous spray of row, squeeze through squeezer, alkali lye is fully contacted the cotton linter after the cyclonic separation with short flannel again;
The 3rd step, alkaline cooking: will add to rotary spherical digester through preimpregnation squeezing back short flannel and remaining alkali lye, through the steam bleeding 5 minutes half an hour that heats up, the steam bleeding 5 minutes half an hour that heats up again, heating up makes temperature the most always reach 132 ℃ half an hour again, and is incubated half an hour;
The 4th goes on foot, and squeezes through black wash and into floats the pond;
In the 5th step, chlorination makes the slurries chlorinty remain on 0.18g/L, chlorination 30min;
In the 6th step, bleaching makes slurries free alkali content remain on 0.05g/L, bleaching 45min;
In the 7th step, acidifying makes slurries acid content (H
+) remain on 0.2g/L, acidifying 30min;
The 8th step is through white slurry squeezing, oven dry, packing warehouse-in.
The present invention uses cotton linter to be raw material, produces extra-high-speed viscosity purified cotton through alkaline cooking.Greatly reduce the difficulty and the ton consumption cost of purified cotton reprocessing.
What should explain at last is: obviously, the foregoing description only be for clearly the present invention is described and is done for example, and be not qualification to embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being amplified out thus or change still are among protection scope of the present invention.
Claims (2)
1. the preparation method of an extra-high-speed viscosity purified cotton is characterized in that, said method is produced extra-high-speed viscosity purified cotton for being raw material with the cotton linter through alkaline cooking.
2. the preparation method of extra-high-speed viscosity purified cotton as claimed in claim 1 is characterized in that, the proportioning raw materials of preparation extra-high-speed viscosity purified cotton is: 1 part of cotton linter, weight concentration are 4 parts of 2.5% NaOH solution;
Concrete preparation process is:
The first step; Opener slagging-off: through opener closely knit short flannel is unwrapped pine and be the fritter short flannel of nature diastole; Be beneficial to the follow-up processing bigger impurity of part that can be removed particle diameter simultaneously; Can the solid particle polluter in the short flannel be cleaned out through picker again, after cyclone dust removal is delivered to preimpregnation squeezing system;
In second step, preimpregnation squeezing: using weight concentration is 2.5% NaOH solution, through the continuous spray of row, squeeze through squeezer, alkali lye is fully contacted the cotton linter after the cyclonic separation with short flannel again;
The 3rd step, alkaline cooking: will add to rotary spherical digester through preimpregnation squeezing back short flannel and remaining alkali lye, through the steam bleeding 5 minutes half an hour that heats up, the steam bleeding 5 minutes half an hour that heats up again, heating up makes temperature the most always reach 132 ℃ half an hour again, and is incubated half an hour;
The 4th goes on foot, and squeezes through black wash and into floats the pond;
In the 5th step, chlorination makes the slurries chlorinty remain on 0.18g/L, chlorination 30min;
In the 6th step, bleaching makes slurries free alkali content remain on 0.05g/L, bleaching 45min;
In the 7th step, acidifying makes slurries acid content (H
+) remain on 0.2g/L, acidifying 30min;
The 8th step is through white slurry squeezing, oven dry, packing warehouse-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210295256.0A CN102817263B (en) | 2012-08-20 | 2012-08-20 | Preparation method for purified cotton with extra-high viscosity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210295256.0A CN102817263B (en) | 2012-08-20 | 2012-08-20 | Preparation method for purified cotton with extra-high viscosity |
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| Publication Number | Publication Date |
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| CN102817263A true CN102817263A (en) | 2012-12-12 |
| CN102817263B CN102817263B (en) | 2014-07-16 |
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| CN201210295256.0A Expired - Fee Related CN102817263B (en) | 2012-08-20 | 2012-08-20 | Preparation method for purified cotton with extra-high viscosity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233383A (en) * | 2013-04-23 | 2013-08-07 | 杨金福 | Production process of purified cotton with super-high viscosity |
| CN104372701A (en) * | 2013-09-09 | 2015-02-25 | 钟祥金汉江精制棉有限公司 | Ultrahigh-viscosity refined cotton production process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1718874A (en) * | 2004-07-09 | 2006-01-11 | 周家贵 | Production technology of extrahigh viscosity refining cotton |
| JP2008231604A (en) * | 2007-03-19 | 2008-10-02 | Misaki Hideko | Lignin-containing pulp cellulose material and method for producing the 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 |
-
2012
- 2012-08-20 CN CN201210295256.0A patent/CN102817263B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1718874A (en) * | 2004-07-09 | 2006-01-11 | 周家贵 | Production technology of extrahigh viscosity refining cotton |
| JP2008231604A (en) * | 2007-03-19 | 2008-10-02 | Misaki Hideko | Lignin-containing pulp cellulose material and method for producing the 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233383A (en) * | 2013-04-23 | 2013-08-07 | 杨金福 | Production process of purified cotton with super-high viscosity |
| CN104372701A (en) * | 2013-09-09 | 2015-02-25 | 钟祥金汉江精制棉有限公司 | Ultrahigh-viscosity refined cotton production process |
| CN104372701B (en) * | 2013-09-09 | 2016-11-23 | 湖北金汉江精制棉有限公司 | Superelevation glues purified cotton production technology |
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| Publication number | Publication date |
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| CN102817263B (en) | 2014-07-16 |
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Granted publication date: 20140716 Termination date: 20180820 |