CN113684712A - Clean production process of purified cotton with waste treatment function - Google Patents
Clean production process of purified cotton with waste treatment function Download PDFInfo
- Publication number
- CN113684712A CN113684712A CN202110954549.4A CN202110954549A CN113684712A CN 113684712 A CN113684712 A CN 113684712A CN 202110954549 A CN202110954549 A CN 202110954549A CN 113684712 A CN113684712 A CN 113684712A
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- China
- Prior art keywords
- cotton
- auxiliary agent
- raw material
- alkali liquor
- cooking auxiliary
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
- D21C3/026—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of O2, e.g. air
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/26—Multistage processes
- D21C3/263—Multistage processes at least one stage being in presence of oxygen
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a clean production process of purified cotton with a waste treatment function, which comprises the following steps: opening and decomposing the cotton linters into flocculent linters through a cotton opener, and removing part of heavy impurities by using a dust remover by using wind power to obtain coarse cotton; then, carrying out alkali leaching treatment on the prepared cooking auxiliary agent alkali liquor and the cotton linter raw material by using a dipping machine; step two: the purified cotton cleaning production process with the waste treatment function can recover the alkali liquor of the cooking auxiliary agent for multiple times, intensively recover and repeatedly use the alkali liquor of the cooking auxiliary agent, and convey the alkali liquor of the cooking auxiliary agent to a sewage treatment station for environment-friendly treatment, so that the purified cotton is environment-friendly to produce and replace, and the production cost is reduced to a certain extent.
Description
Technical Field
The invention belongs to the technical field of clean production of purified cotton, and particularly relates to a clean production process of purified cotton with a waste treatment function.
Background
The refined cotton is white floccule which is even and loose and has no impurities such as wood chips, bamboo chips, silt, oil stains, metal objects and the like. The raw material is cotton linter, and the main chemical components are cellulose, lignin and hemicellulose. It is composed of 3 elements of carbon, hydrogen and oxygen. The refined cotton is non-toxic, tasteless and easy to absorb water, is a main material for manufacturing ether cellulose (such as CMC, HEC, HPMC, MC and the like), nitrocellulose (nitrocellulose) and cellulose acetate, and is widely applied to various fields of food, medicine, daily chemicals, plastics, electronics, paper making, metallurgy, aerospace and the like. A large amount of waste can be generated in the existing clean production process of the refined cotton, and the waste cannot be treated in time, so that the production process is not green enough.
Disclosure of Invention
The invention aims to provide a clean production process of refined cotton with a waste treatment function, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a clean production process of purified cotton with a waste treatment function comprises the following steps: opening and decomposing the cotton linters into flocculent linters through a cotton opener, and removing part of heavy impurities by using a dust remover by using wind power to obtain coarse cotton; then, carrying out alkali leaching treatment on the prepared cooking auxiliary agent alkali liquor and the cotton linter raw material by using a dipping machine;
step two: placing the cotton linter raw material completely subjected to alkali leaching in the step one into a digester, and performing a process of digestion and degreasing, wherein after the digestion is finished, the digestion auxiliary agent alkali liquor in the digester can be recycled and stored, and is used for alkali leaching treatment of the cotton linter raw material of the next batch together with the digestion auxiliary agent alkali liquor prepared in the step one; after all the cotton linters raw material is subjected to alkali leaching treatment, intensively conveying the alkali liquor of the cooking auxiliary agent to a sewage treatment station for purification treatment;
step three: rolling the cotton linter raw material obtained in the step two, extruding redundant cooking auxiliary agent alkali liquor, storing the extruded cooking auxiliary agent alkali liquor and the cooking auxiliary agent alkali liquor recovered in the step two together, and dehydrating through dehydrating equipment;
step four: sending the cotton linter raw material obtained in the step three into a mixer, then falling into a heating screw to increase the temperature of the cotton linter raw material to 35-55 ℃, conveying the cotton linter raw material into an electrolytic oxygen reaction vessel, adding an auxiliary agent at the temperature of 75-95 ℃, and reacting for 10-15 min to obtain a cellulose semi-finished product;
step five: and (3) adding the cellulose semi-finished product obtained in the fourth step, a protective agent and a catalyst into a reaction kettle for reaction, then carrying out a deslagging process, a screening process and a drying process, and finally packaging to obtain the refined cotton.
Preferably, when the alkali liquor of the cooking auxiliary agent and the cotton linter raw material are subjected to alkali leaching treatment in the step one, a stirring device is required to be used for stirring, so that the alkali leaching effect is ensured.
Preferably, the auxiliary agents in step four include a bleaching aid, a bleaching agent and a catalyst.
Preferably, the lye of the cooking auxiliary recovered in step two and step three is subjected to a filtration treatment when being put into the next batch of cotton linters raw material for use, and impurities in the lye of the cooking auxiliary are filtered.
Preferably, the electrolytic oxygen reaction vessel in the fourth step has an ultraviolet light emitting function.
Compared with the prior art, the invention has the beneficial effects that: the clean production process of the refined cotton with the waste treatment function provided by the invention can be used for recovering the alkali liquor of the cooking auxiliary agent for multiple times, intensively recovering the alkali liquor of the cooking auxiliary agent for repeated use, and conveying the alkali liquor of the cooking auxiliary agent to a sewage treatment station for environment-friendly treatment, so that the production and replacement of the refined cotton are environment-friendly, and the production cost is reduced to a certain extent.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a clean production process of purified cotton with a waste treatment function comprises the following steps: opening and decomposing the cotton linters into flocculent linters through a cotton opener, and removing part of heavy impurities by using a dust remover by using wind power to obtain coarse cotton; then, carrying out alkali leaching treatment on the prepared cooking auxiliary agent alkali liquor and the cotton linter raw material by using a dipping machine;
step two: placing the cotton linter raw material completely subjected to alkali leaching in the step one into a digester, and performing a process of digestion and degreasing, wherein after the digestion is finished, the digestion auxiliary agent alkali liquor in the digester can be recycled and stored, and is used for alkali leaching treatment of the cotton linter raw material of the next batch together with the digestion auxiliary agent alkali liquor prepared in the step one; after all the cotton linters raw material is subjected to alkali leaching treatment, intensively conveying the alkali liquor of the cooking auxiliary agent to a sewage treatment station for purification treatment;
step three: rolling the cotton linter raw material obtained in the step two, extruding redundant cooking auxiliary agent alkali liquor, storing the extruded cooking auxiliary agent alkali liquor and the cooking auxiliary agent alkali liquor recovered in the step two together, and dehydrating through dehydrating equipment;
step four: sending the cotton linter raw material obtained in the step three into a mixer, then falling into a heating screw to increase the temperature of the cotton linter raw material to 35-55 ℃, conveying the cotton linter raw material into an electrolytic oxygen reaction vessel, adding an auxiliary agent at the temperature of 75-95 ℃, and reacting for 10-15 min to obtain a cellulose semi-finished product;
step five: and (3) adding the cellulose semi-finished product obtained in the fourth step, a protective agent and a catalyst into a reaction kettle for reaction, then carrying out a deslagging process, a screening process and a drying process, and finally packaging to obtain the refined cotton.
In this embodiment, preferably, when the alkali-leaching treatment is performed on the cooking auxiliary agent alkali liquor and the cotton linter raw material in the step one, a stirring device needs to be used for stirring, so as to ensure the alkali-leaching effect.
In this embodiment, the preferred, adjuvants in step four include a bleaching aid, a bleaching agent and a catalyst.
In this embodiment, preferably, the lye of the cooking auxiliary recovered in the second step and the third step is filtered when it is used for feeding the next batch of cotton linters raw material, and the impurities in the lye of the cooking auxiliary are filtered.
In this embodiment, it is preferable that the electrolytic oxygen reaction vessel in the fourth step has an ultraviolet ray emitting function.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A clean production process of purified cotton with a waste treatment function is characterized in that: the method comprises the following steps: opening and decomposing the cotton linters into flocculent linters through a cotton opener, and removing part of heavy impurities by using a dust remover by using wind power to obtain coarse cotton; then, carrying out alkali leaching treatment on the prepared cooking auxiliary agent alkali liquor and the cotton linter raw material by using a dipping machine;
step two: placing the cotton linter raw material completely subjected to alkali leaching in the step one into a digester, and performing a process of digestion and degreasing, wherein after the digestion is finished, the digestion auxiliary agent alkali liquor in the digester can be recycled and stored, and is used for alkali leaching treatment of the cotton linter raw material of the next batch together with the digestion auxiliary agent alkali liquor prepared in the step one; after all the cotton linters raw material is subjected to alkali leaching treatment, intensively conveying the alkali liquor of the cooking auxiliary agent to a sewage treatment station for purification treatment;
step three: rolling the cotton linter raw material obtained in the step two, extruding redundant cooking auxiliary agent alkali liquor, storing the extruded cooking auxiliary agent alkali liquor and the cooking auxiliary agent alkali liquor recovered in the step two together, and dehydrating through dehydrating equipment;
step four: sending the cotton linter raw material obtained in the step three into a mixer, then falling into a heating screw to increase the temperature of the cotton linter raw material to 35-55 ℃, conveying the cotton linter raw material into an electrolytic oxygen reaction vessel, adding an auxiliary agent at the temperature of 75-95 ℃, and reacting for 10-15 min to obtain a cellulose semi-finished product;
step five: and (3) adding the cellulose semi-finished product obtained in the fourth step, a protective agent and a catalyst into a reaction kettle for reaction, then carrying out a deslagging process, a screening process and a drying process, and finally packaging to obtain the refined cotton.
2. The clean production process of refined cotton with waste treatment function as claimed in claim 1, characterized in that: when the alkali leaching treatment is carried out on the cooking auxiliary agent alkali liquor and the cotton linter raw material in the step one, a stirring device is required to be used for stirring, so that the alkali leaching effect is ensured.
3. The clean production process of refined cotton with waste treatment function as claimed in claim 1, characterized in that: the auxiliary agents in the fourth step comprise bleaching aids, bleaching agents and catalysts.
4. The clean production process of refined cotton with waste treatment function as claimed in claim 1, characterized in that: and step two and step three, when the recovered cooking auxiliary agent alkali liquor is put into the next batch of cotton linters raw material for use, filtering, and filtering impurities in the cooking auxiliary agent alkali liquor.
5. The clean production process of refined cotton with waste treatment function as claimed in claim 1, characterized in that: the electrolytic oxygen reaction vessel in the fourth step has an ultraviolet ray emission function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110954549.4A CN113684712A (en) | 2021-08-19 | 2021-08-19 | Clean production process of purified cotton with waste treatment function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110954549.4A CN113684712A (en) | 2021-08-19 | 2021-08-19 | Clean production process of purified cotton with waste treatment function |
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| CN113684712A true CN113684712A (en) | 2021-11-23 |
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| CN202110954549.4A Pending CN113684712A (en) | 2021-08-19 | 2021-08-19 | Clean production process of purified cotton with waste treatment function |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001115382A (en) * | 1999-10-14 | 2001-04-24 | Nippon Paper Industries Co Ltd | Method for producing bleached kraft pulp |
| CN103015253A (en) * | 2011-09-23 | 2013-04-03 | 山东银鹰股份有限公司 | Method for producing cotton pulp used for cellulose triacetate by two-step stewing technology |
| CN103938476A (en) * | 2014-04-14 | 2014-07-23 | 薛润林 | Novel method for presoaking, strewing and pulping linters |
| 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 |
| 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 |
| CN109797593A (en) * | 2017-11-16 | 2019-05-24 | 江苏三富纤维科技有限公司 | The process for cleanly preparing of purified cotton under a kind of room temperature, normal pressure |
| CN109797591A (en) * | 2017-11-16 | 2019-05-24 | 江苏三富纤维科技有限公司 | A kind of purified cotton process for cleanly preparing of the whole process without black liquor |
-
2021
- 2021-08-19 CN CN202110954549.4A patent/CN113684712A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001115382A (en) * | 1999-10-14 | 2001-04-24 | Nippon Paper Industries Co Ltd | Method for producing bleached kraft pulp |
| CN103015253A (en) * | 2011-09-23 | 2013-04-03 | 山东银鹰股份有限公司 | Method for producing cotton pulp used for cellulose triacetate by two-step stewing technology |
| 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 |
| CN103938476A (en) * | 2014-04-14 | 2014-07-23 | 薛润林 | Novel method for presoaking, strewing and pulping linters |
| 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 |
| CN109797593A (en) * | 2017-11-16 | 2019-05-24 | 江苏三富纤维科技有限公司 | The process for cleanly preparing of purified cotton under a kind of room temperature, normal pressure |
| CN109797591A (en) * | 2017-11-16 | 2019-05-24 | 江苏三富纤维科技有限公司 | A kind of purified cotton process for cleanly preparing of the whole process without black liquor |
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