CN110396844B - Preparation process of cellulose pulp porridge - Google Patents
Preparation process of cellulose pulp porridge Download PDFInfo
- Publication number
- CN110396844B CN110396844B CN201810373767.7A CN201810373767A CN110396844B CN 110396844 B CN110396844 B CN 110396844B CN 201810373767 A CN201810373767 A CN 201810373767A CN 110396844 B CN110396844 B CN 110396844B
- Authority
- CN
- China
- Prior art keywords
- pulp
- porridge
- dissolving
- water
- cellulose
- 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.)
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- 229920002678 cellulose Polymers 0.000 title claims abstract description 36
- 239000001913 cellulose Substances 0.000 title claims abstract description 36
- 235000021395 porridge Nutrition 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000001125 extrusion Methods 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000003860 storage Methods 0.000 claims abstract description 5
- 229920000875 Dissolving pulp Polymers 0.000 claims description 4
- 229920002488 Hemicellulose Polymers 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000002904 solvent Substances 0.000 abstract description 5
- 239000000654 additive Substances 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 2
- 239000011268 mixed slurry Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 description 5
- 229920003043 Cellulose fiber Polymers 0.000 description 4
- 229920000433 Lyocell Polymers 0.000 description 3
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 239000004627 regenerated cellulose Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000003729 cation exchange resin Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Paper (AREA)
Abstract
The invention provides a preparation process of cellulose pulp porridge, which comprises the steps of dissolving water, adding pulp, stirring in a dissolving tank and stirring in a pulp porridge storage tank. The preparation process of the cellulose pulp porridge is simple and easy to operate, the prepared cellulose pulp porridge is stable, the difference between batches is small, and the influence on the subsequent extrusion and solvent recovery procedures is small; can meet the process requirements of subsequent extrusion and preparation of mixed slurry porridge; no additive is added, the raw materials are saved, the energy consumption is reduced, and the production cost is reduced, the DP of the cellulose pulp porridge prepared by the invention is 400-800, the pH value is 6.5-8.0, and the concentration is 3% -10%.
Description
Technical Field
The invention relates to a preparation process of cellulose pulp porridge, belonging to the technical field of cellulose fiber production.
Background
The solvent method cellulose fiber-Lyocell fiber is a regenerated cellulose fiber prepared by directly dissolving cellulose in an NMMO/water system to form a cellulose solution and spinning by a dry-jet wet method. The NMMO solvent adopted by the production of the Lyocell fibers is non-toxic and can be recycled, the whole production system forms a closed-loop recycling system, no waste is discharged, and the clean production of the regenerated cellulose fibers is realized.
The production process of the cellulose fiber by the solvent method comprises the steps of pulp → slurry preparation → mixed slurry preparation (cellulose suspension) → cellulose dissolution → cellulose/NMMO glue solution → filtration, defoaming → spinning → tow → water washing → cutting → refining → drying → Lyocell fiber.
The original preparation of cellulose pulp porridge is to mix and stir pulp and extrusion water, and add cellulose, acid, alkali and other auxiliaries, the preparation process is complex, more additives are added, the energy consumption is high, the burden of anion and cation exchange resin is increased during the solvent recovery treatment, and the service life of the exchange resin is shortened.
Disclosure of Invention
Aiming at the defects of the original preparation of the cellulose pulp porridge, the invention provides a preparation process of the cellulose pulp porridge, which aims to realize the following purposes: the pulp extrusion water is recycled and is completely used for dissolving cellulose pulp, no additive is used, the preparation process of the pulp is simple and easy to operate, the process is stable, and the difference among batches is small; can meet the process requirements of subsequent extrusion of the paste and preparation of mixed paste; the production cost is obviously reduced.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a process for preparing cellulose pulp gruel includes such steps as mixing dissolving water, adding dissolving water to dissolving tank of pulp, adding pulp, stirring in dissolving tank of pulp, and stirring in gruel storage tank.
The following is a specific technical scheme:
the dissolving water in the dissolving tank is recovered water obtained by extruding the slurry porridge and a small amount of deionized water, and the water temperature is 50-60 ℃.
The pulp porridge extrusion water has filterable particle content of 0.2-0.55g/L, pH of 5.5-7.0 and hemicellulose content of 0.01-0.75 g/L.
The pulp is added in an amount of 3-10%, preferably 4-6%, of the pulp concentration.
The pulp dissolving tank is stirred, dissolving water and a certain amount of pulp are put into the pulp dissolving tank in batches, no auxiliary agent is added, and stirring is carried out for 40-60min, so that cellulose is fully swelled, and uniformly dispersed cellulose pulp porridge with a certain concentration is formed.
The pulp porridge in the dissolving tank is sent into the pulp porridge storage tank for stirring for 20-40min, and the cellulose pulp porridge required by the process is prepared.
The cellulose pulp porridge has pH of 6.5-8.0 and DP of 400-800.
By adopting the technical scheme, the invention achieves the technical effects that:
(1) the preparation process of the cellulose pulp porridge is simple and easy to operate, the prepared cellulose pulp porridge is stable, and the difference between batches is small.
(2) Can meet the process requirements of subsequent extrusion and preparation of premixed slurry congee.
(3) No addition of any auxiliary agent is needed, raw materials and energy consumption are saved, and production cost is reduced.
(4) The porridge prepared by the invention has DP of 400-800, pH of 6.5-8.0 and concentration of 3-10%.
Detailed Description
The present invention will be described in detail with reference to examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be apparent to those skilled in the art that several modifications and improvements can be made without departing from the inventive concept. All falling within the scope of the present invention.
Example 1A cellulose pulp porridge preparation Process
The method comprises the following steps:
(1) blending with dissolved water
After extruding the slurry congee, completely recycling extrusion water into a liquid pressing tank, pumping the extrusion water into a dissolving water tank through a pump, and controlling the water temperature of the dissolving water to be 55 ℃ through a temperature regulating control system;
the content of filterable particles in the extrusion water is 0.35g/L, the pH value is 7.0, and the content of hemicellulose is 0.06 g/L.
(2) Dissolving water is pumped into a dissolving tank for dissolving pulp
The prepared dissolving water is quantitatively sent to a pulp dissolving tank by a pump.
(3) Addition of pulp
The amount of pulp added was calculated as to prepare 4.5% pulp congee, and a fixed amount of pulp was put into a pulp dissolving tank. The pulp has a degree of polymerization of 400-1000.
(4) Preparation of slurry porridge
Stirring the pulp in the pulp dissolving tank and the dissolving water for 40min to fully swell the cellulose to form the uniformly dispersed cellulose pulp porridge with a certain concentration. Feeding the cellulose pulp into a pulp storage tank, and continuously stirring the cellulose pulp for 30min to finish the preparation of the pulp.
The cellulose pulp porridge was prepared at a concentration of 4.5%, DP of 570, and pH 7.1.
Unless otherwise stated, the percentages used in the present invention are percentages by weight, and the proportions described in the present invention are proportions by mass.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. A preparation process of cellulose pulp porridge is characterized by comprising the following steps: the preparation process of the cellulose pulp porridge comprises the following steps:
1) blending with dissolved water
After extruding the pulp congee, completely recycling extrusion water into a liquid pressing tank, pumping the extrusion water into a dissolving water tank through a pump, and controlling the water temperature of the dissolving water to be 55 ℃ through a temperature regulation control system;
the content of filterable particles in the extrusion water is 0.35g/L, the pH value is 7.0, and the content of hemicellulose is 0.06 g/L;
2) dissolving water is pumped into a dissolving tank for dissolving pulp
Quantitatively sending the prepared dissolving water to a pulp dissolving tank through a pump;
3) addition of pulp
Calculating the adding amount of the pulp according to the prepared pulp porridge with the concentration of 4.5%, and putting a certain amount of pulp into a pulp dissolving tank;
the pulp has a polymerization degree of 400-1000;
4) preparing paste porridge
Stirring the pulp in the pulp dissolving tank and dissolving water for 40min to fully swell cellulose and form uniformly dispersed cellulose pulp porridge with certain concentration;
feeding the cellulose pulp porridge into a pulp porridge storage tank, and continuously stirring the cellulose pulp porridge for 30min to finish the preparation of the pulp porridge;
the cellulose pulp porridge was prepared at a concentration of 4.5%, DP of 570, and pH 7.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810373767.7A CN110396844B (en) | 2018-04-24 | 2018-04-24 | Preparation process of cellulose pulp porridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810373767.7A CN110396844B (en) | 2018-04-24 | 2018-04-24 | Preparation process of cellulose pulp porridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110396844A CN110396844A (en) | 2019-11-01 |
| CN110396844B true CN110396844B (en) | 2022-07-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810373767.7A Active CN110396844B (en) | 2018-04-24 | 2018-04-24 | Preparation process of cellulose pulp porridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110396844B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1420214A (en) * | 2002-12-11 | 2003-05-28 | 东华大学 | Process for preparing spinning dope of cellulose base fibre by solvent process |
| CN201236223Y (en) * | 2008-06-10 | 2009-05-13 | 宜宾海丝特纤维有限责任公司 | Alkali fiber production apparatus with plant fiber as raw material |
| CN101476166A (en) * | 2009-01-13 | 2009-07-08 | 东华大学 | Improved preparation of cellulose spinning solution with ion liquid as solvent |
| CN102234849A (en) * | 2010-05-07 | 2011-11-09 | 铜陵艾纶麻业纺织服饰有限责任公司 | Solvent method for producing regenerated bamboo cellulose |
| WO2016188275A1 (en) * | 2015-05-27 | 2016-12-01 | 宜宾丝丽雅集团有限公司 | High-strength, low-stretch viscose fiber and manufacturing method therefor |
| CN106283242A (en) * | 2015-06-01 | 2017-01-04 | 中国纺织科学研究院 | A kind of activation method of cellulose pulp |
| CN107164826A (en) * | 2017-07-06 | 2017-09-15 | 百事基材料（青岛）股份有限公司 | A kind of honeysuckle cellulose fibre and preparation method and application |
-
2018
- 2018-04-24 CN CN201810373767.7A patent/CN110396844B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1420214A (en) * | 2002-12-11 | 2003-05-28 | 东华大学 | Process for preparing spinning dope of cellulose base fibre by solvent process |
| CN201236223Y (en) * | 2008-06-10 | 2009-05-13 | 宜宾海丝特纤维有限责任公司 | Alkali fiber production apparatus with plant fiber as raw material |
| CN101476166A (en) * | 2009-01-13 | 2009-07-08 | 东华大学 | Improved preparation of cellulose spinning solution with ion liquid as solvent |
| CN102234849A (en) * | 2010-05-07 | 2011-11-09 | 铜陵艾纶麻业纺织服饰有限责任公司 | Solvent method for producing regenerated bamboo cellulose |
| WO2016188275A1 (en) * | 2015-05-27 | 2016-12-01 | 宜宾丝丽雅集团有限公司 | High-strength, low-stretch viscose fiber and manufacturing method therefor |
| CN106283242A (en) * | 2015-06-01 | 2017-01-04 | 中国纺织科学研究院 | A kind of activation method of cellulose pulp |
| CN107164826A (en) * | 2017-07-06 | 2017-09-15 | 百事基材料（青岛）股份有限公司 | A kind of honeysuckle cellulose fibre and preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110396844A (en) | 2019-11-01 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210524 Address after: Room 1115, Zhongfu building, 99 Jianguo Road, Chaoyang District, Beijing 100020 Applicant after: HI-TECH FIBER Group Corp. Applicant after: BAODING SWAN FIBER CO.,LTD. Address before: Room 1115, Zhongfu building, 99 Jianguo Road, Chaoyang District, Beijing 100020 Applicant before: HI-TECH FIBER Group Corp. Applicant before: BAODING SWAN FIBER CO.,LTD. Applicant before: CHTC BIO-BASED MATERIAL ENGINEERING & TECHNOLOGY(NINGBO) Co.,Ltd. |
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Effective date of registration: 20231203 Address after: 072250 North of Gaosheng Pu Village, Pushang Town, Shunping County, Baoding City, Hebei Province (east side of Zhangshi Expressway lead) Patentee after: BAODING SWAN FIBER CO.,LTD. Address before: Room 1115, Zhongfu building, 99 Jianguo Road, Chaoyang District, Beijing 100020 Patentee before: HI-TECH FIBER Group Corp. Patentee before: BAODING SWAN FIBER CO.,LTD. |