CN1385287A - Bamboo pulp denatured productive technology - Google Patents
Bamboo pulp denatured productive technology Download PDFInfo
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- CN1385287A CN1385287A CN 02112175 CN02112175A CN1385287A CN 1385287 A CN1385287 A CN 1385287A CN 02112175 CN02112175 CN 02112175 CN 02112175 A CN02112175 A CN 02112175A CN 1385287 A CN1385287 A CN 1385287A
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Abstract
The production process of bamboo fibre viscose pulp includes the following main steps: pre-alkalizing, secondary cooking, plate (belt) type washing and bleaching, and is characterized by mixing insoluble bamboo pulp undergo the process of modification treatment to produce soluble viscose bamboo pulp. As compared with cotton pulp production process it can reduce discharge of waste water by 35%, and is approaching to or superior to cotton pulp in quality.
Description
Technical field
Bamboo pulp denatured productive technology of the present invention relates to a kind of bamboo fibre viscose glue pulp production technology.
Background technology
Pulp is divided into solubility and insolubility two classes, and existing bamboo pulp product mostly is insoluble pulp, and degree of polymerization height (DP＞1000) exists the alpha cellulose percentage composition low and the major technique defective such as can not spin, and can only be used for paper production; And solubility viscose glue bamboo pulp adopts sulfate process one-step method digesting technoloy, and have the following technological deficiency: (1) reactivity worth is bad; (2) spinnability is poor, needs the fusion cotton pulp dregs of rice can carry out rayon spinning (promptly mix and spin); (3) viscose glue Cheng Sihou fibre strength is poor; (4) environmental pollution is serious, is unfavorable for the sustainable development that the big city pulp is produced.
Summary of the invention
The object of the invention is: a kind of process that is the pure bamboo fibre pulp of solubility viscose glue with insoluble bamboo pulp denatured production is provided, makes it can carry out rayon spinning separately, improve whiteness and alpha cellulose purity.
Purpose of the present invention can be achieved through the following technical solutions: according to the pulp production technology, mainly contain alkali pre-preg, secondary boiled, dull and stereotyped (band) formula is washed material, oozed and float, wash material, removal of impurities etc.
On above-mentioned technology basis, concrete technological process is pressed: 1, alkali pre-preg; 2, secondary boiled; 3, discongest; 4, dull and stereotyped (band) formula is washed material; 5, desanding, concentrated; 6, ooze and float, wash material; 7, bleaching; 8, acid treatment, wash material; 9, back desanding, concentrated; 10, manufacture paper with pulp.Wherein:
Described alkali pre-preg is with insoluble bamboo pulp shredding, impurity elimination through opener, feeding auger squeezer after separating spray alkali, insoluble bamboo pulp fiber after pulverizing, the alkali pre-preg is pushed infiltration, technological parameter: with alkali (NaOH) amount 19-26%; bath raio 1: 3.75-1: 3.90, feed intake and send into rotary spherical digester temperature 〉=80 ℃.
Described secondary boiled be to carrying out the boiling second time through the bamboo pulp of once boiling.Processing step is: not admission of rotary spherical digester was changeed 20-30 minute after (1) fed intake; (2) HTHP boiling, wherein, heating curve 2 hours, total 2 hours heating-up times, 32 steam bleedings that heat up, last heat up the back holding temperature between 170-175 ℃, pressure 0.77 ± 0.02MPa/cm
2
It is to wash material with discongesting disposed slurry that described flat board (band) formula is washed material, and its technical parameter is: half stuff contains alkali 〉=2000g/m
3, 30 meters/minute of pulp washing speed, decrement 80-100g/m behind the pulp washing
3
The described technical parameter that oozes the rinsing material: time 90-120 minute, chlorine was used than 0.15-0.25%, and is sour than 0.8-0.9%, alkali number 10-30g/m
3
Effect of the present invention: 1, the present invention is with the insoluble bamboo pulp denatured solubility viscose glue bamboo pulp that produces, and its index is compared as follows table:
The fine % of moisture content % 10 ± 1 degree of polymerization DP 1,341 500 ± 20 first≤87.1 〉=93.0 ash≤% 1.13 0.10 ironys after index item compared unit sex change production front sex change in the bamboo pulp denatured production of table 1 front and back is produced≤P.P.M 28 14 suction base number＞% 709 570 whiteness 〉=little dust of %-81＜＞0.03-3.0mm2105 50 big dust＜＞3.0mm
221 reactivity worth 7C.C.--by
2, adopt the viscose glue bamboo pulp product of this modified production process to compare favourably, see the following form 2 with similar viscose glue cotton pulp dregs of rice product
Table 2 viscose glue bamboo pulp, viscose glue cotton pulp dregs of rice primes technical indicator are relatively
Project unit's viscose glue bamboo pulp viscose glue cotton pulp dregs of rice
(ministry standard)
Moisture content % 10 ± 1-degree of polymerization DP 500 ± 20 500 ± 20
First fibre 〉=% 93.0 93.0
Ash≤% 0.10 0.11
Irony≤P.P.M 14 20 inhales base number＞% 570 500
Whiteness 〉=% 81 81 little dust＜0.03-3.0mm
250 140 big dust＜＞3.0mm
211 reactivity worth 7.C.C are by passing through
3, compare with the production of the cotton pulp dregs of rice, reduce factory effluent discharge capacity 35%.
The present invention has opened up bamboo fibre viscose glue pulp production new way, and exploitation viscose glue pulp new varieties help the big city and utilize technical advantage to make viscose glue pulp production sustainable development.
Description of drawings
Accompanying drawing, process chart of the present invention
The specific embodiment
As figure, process chart of the present invention, concrete technological process is pressed: 1, alkali pre-preg; 2, secondary boiled; 3, discongest; 4, dull and stereotyped (band) formula is washed material; 5, desanding, concentrated; 6, ooze and float, wash material; 7, bleaching; 8, acid treatment, wash material; 9, back desanding, concentrated; 10, manufacture paper with pulp.Wherein:
1, alkali pre-preg, the process opener is with the shredding of insoluble bamboo pulp product, impurity elimination, feeding auger squeezer behind cyclonic separation spray alkali, insoluble bamboo pulp fiber after pulverizing, the alkali pre-preg is pushed infiltration, for the alpha cellulose purity and the reduction degree of polymerization that improve sex change production bamboo pulp are prepared, for secondary boiled boiling uniformity lays the foundation.
Important technological parameters: with alkali (NaOH) amount 19-26%, bath raio 1: 3.75-1: 3.90, feed intake and send into rotary spherical digester temperature 〉=80 ℃.
2, secondary boiled.Passed through once boiling when producing for insoluble bamboo pulp, the present invention carries out the boiling second time, is the two step method boiling.Adopt HTHP, three intensifications, secondary steam bleeding, the technology purpose is to reduce the insoluble bamboo pulp degree of polymerization, improves the fine purity of first.Processing step is: not admission of rotary spherical digester was changeed 20-30 minute after (1) fed intake; (2) HTHP boiling.
Important technological parameters: heating curve 2 hours, total 2 hours heating-up times, 32 steam bleedings that heat up, last heat up the back holding temperature between 170-175 ℃, pressure 0.77 ± 0.02MPa/cm
2
Cooking effect: DP 545 ± 25, first fibre 〉=95%, the fine raising rate of first 〉=9.1%, reactivity worth 7c.c. can obtain by.For the technology basis is established in later process production.
3, discongest: directly be delivered to beater after the rotary spherical digester batch turning and carry out light cutter and discongest.
Specification requirement: do not have little slurry group, make fiber in order.
4, dull and stereotyped (band) formula is washed material.Discongest disposed slurry and send the belt vacuum pulp washing machine to wash material, purpose is simplified working process, conservation of power and chemical industry material, and efficient, continuously, evenly impurity elimination, eliminate alkali, make technology and guarantee for the back operation improves the pulp whiteness.
Important technological parameters: half stuff contains alkali 〉=2000g/m
3, 30 meters/minute of pulp washing speed, decrement 80-100g/m behind the pulp washing
3
5, desanding, concentrated.
Two road desanding are divided into two types of open and closeds, and open desanding main purpose is a deslagging, and the closed desanding utilizes the centrifugal force removal of impurities.Desanding bottle model 600#, 606# etc.Desanding operating pressure＞0.25MPa.
Cylinder concentrates and removes big dust, and thickened pulp is dense.
Important technological parameters: starch and densely be concentrated into 4.5% by 3%.
6, ooze and float, wash material.Employing is oozed the technology of floating and is improved whiteness, reduces ash.Relatively have with chloridization process and not fall the degree of polymerization, save the chemical industry material and to improve advantages such as the whiteness effect is good.Its important technological parameters: time 90-120 minute, chlorine was used than 0.15-0.25%, and is sour than 0.8-0.9%, alkali number 10-30g/m
3And add other auxiliary chemicals.Washing, chlorination was handled after 30 minutes, and residual alkali reaches 0.04g/l, whiteness 〉=58%.
7, bleaching: purpose is continue to remove pigment, impurity and fall poly-and do not damage the first fibre.Determine chlorine dosage, alkali charge, reach time and temperature according to indexs such as slurry polymerisation degree.Important technological parameters is floated the back effect: whiteness 〉=72%, and DP520 ± 20, first fibre 〉=93%, ash＜0.15%, irony≤14P.P.M inhales base number 570, and reactivity worth 7c.c. passes through.
8, acid treatment, washing: ash, irony are removed in acid treatment.The washing flush away remains in the various solubility in acid impurity in the slurry.
9, back desanding, concentrate and 10, manufacture paper with pulp, two operations and process for producing cotton dissolving pulp are basic identical.
According to technological process production, after producing in batches, the viscose glue bamboo pulp product of the present invention being produced by rayon spinning factory carries out the rayon spinning achieving success separately, and becomes yarn quality good, and fibre strength, whiteness obviously improve, and relatively spinnability is strong with the cotton pulp dregs of rice.Its physical index has all arrived GB/T14463-93 standard Grade A, the tow gloss appearance, smooth, except that have gas permeability, dyeability, drapability well, also have softness, elastic wear-resisting, light, characteristic such as nice and cool, antibacterial, the special adaptation, made summer clothes, as T-shirt, woman style fashionable dress, bedding etc., is a new generation's " green fiber ".
Claims (5)
1, bamboo pulp denatured productive technology according to the pulp production technology, is characterized in that: mainly contain alkali pre-preg, secondary boiled, dull and stereotyped (band) formula is washed material, oozed and float.
2, bamboo pulp denatured productive technology according to claim 1, it is characterized in that, described alkali pre-preg is with insoluble bamboo pulp shredding, impurity elimination through opener, feeding auger squeezer after separating spray alkali, to pulverize, insoluble bamboo pulp fiber after the alkali pre-preg pushes infiltration, technological parameter: with alkali (NaOH) amount 19-26%; bath raio 1: 3.75-1: 3.90, feed intake and send into rotary spherical digester temperature 〉=80 ℃.
3, bamboo pulp denatured productive technology according to claim 1 is characterized in that, described secondary boiled be to carrying out boiling second time through the bamboo pulp of once boiling, processing step is: (1) back not admission of rotary spherical digester commentaries on classics 20-30 minute that feeds intake; (2) HTHP boiling, wherein, heating curve 2 hours, total 2 hours heating-up times, 32 steam bleedings that heat up, last heat up the back holding temperature between 170-175 ℃, pressure 0.77 ± 0.02MPa/cm
2
4, bamboo pulp denatured productive technology according to claim 1 is characterized in that, it is to wash material with discongesting disposed slurry that described flat board (band) formula is washed material, and its technical parameter is: half stuff contains alkali 〉=2000g/m
3, 30 meters/minute of pulp washing speed, decrement 80-100g/m behind the pulp washing
3
5, bamboo pulp denatured productive technology according to claim 1 is characterized in that, the described technical parameter that floats that oozes: time 90-120 minute, chlorine was used than 0.15-0.25%, and is sour than 0.8-0.9%, alkali number 10-30g/m
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021121753A CN1161212C (en) | 2002-06-21 | 2002-06-21 | Bamboo pulp denatured productive technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021121753A CN1161212C (en) | 2002-06-21 | 2002-06-21 | Bamboo pulp denatured productive technology |
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|---|---|
| CN1385287A true CN1385287A (en) | 2002-12-18 |
| CN1161212C CN1161212C (en) | 2004-08-11 |
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|---|---|---|---|
| CNB021121753A Expired - Fee Related CN1161212C (en) | 2002-06-21 | 2002-06-21 | Bamboo pulp denatured productive technology |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008074220A1 (en) * | 2006-12-18 | 2008-06-26 | Hebei Jigao Chemical Fiber Co., Ltd. | A preparation method of a bamboo pulp |
| CN101148835B (en) * | 2007-11-12 | 2010-05-19 | 宜宾长毅浆粕有限责任公司 | Paper-making-stage wood pulp plate denaturalization producing technique |
| CN101158125B (en) * | 2007-11-12 | 2010-05-19 | 宜宾长毅浆粕有限责任公司 | Paper-making grade softwood pulp plate modifying production technique |
| CN101603210B (en) * | 2008-06-10 | 2011-07-20 | 宜宾海丝特纤维有限责任公司 | Method for producing viscose fiber prepared by plant fiber |
| CN102677496A (en) * | 2012-05-29 | 2012-09-19 | 宜宾长毅浆粕有限责任公司 | Material preparation process for preparing dissolving pulp by modifying bleached bamboo-wood composite pulp |
| CN102677495A (en) * | 2012-05-29 | 2012-09-19 | 宜宾长毅浆粕有限责任公司 | Material preparation process suitable for preparing dissolving pulp by modifying bleached bamboo paper pulp |
| CN102926256A (en) * | 2012-11-27 | 2013-02-13 | 保定天鹅股份有限公司 | Denatured production process of bamboo pulp for producing viscose fiber |
| CN102943403A (en) * | 2012-11-27 | 2013-02-27 | 保定天鹅股份有限公司 | Wood pulp denaturalization production process for producing viscose fibers |
| CN108060597A (en) * | 2017-11-28 | 2018-05-22 | 安徽比伦生活用纸有限公司 | A kind of production method of the household paper pulp of environmental protection and energy saving |
-
2002
- 2002-06-21 CN CNB021121753A patent/CN1161212C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008074220A1 (en) * | 2006-12-18 | 2008-06-26 | Hebei Jigao Chemical Fiber Co., Ltd. | A preparation method of a bamboo pulp |
| CN101148835B (en) * | 2007-11-12 | 2010-05-19 | 宜宾长毅浆粕有限责任公司 | Paper-making-stage wood pulp plate denaturalization producing technique |
| CN101158125B (en) * | 2007-11-12 | 2010-05-19 | 宜宾长毅浆粕有限责任公司 | Paper-making grade softwood pulp plate modifying production technique |
| CN101603210B (en) * | 2008-06-10 | 2011-07-20 | 宜宾海丝特纤维有限责任公司 | Method for producing viscose fiber prepared by plant fiber |
| CN102677496B (en) * | 2012-05-29 | 2015-07-01 | 宜宾丝丽雅集团有限公司 | Material preparation process for preparing dissolving pulp by modifying bleached bamboo-wood composite pulp |
| CN102677495A (en) * | 2012-05-29 | 2012-09-19 | 宜宾长毅浆粕有限责任公司 | Material preparation process suitable for preparing dissolving pulp by modifying bleached bamboo paper pulp |
| CN102677495B (en) * | 2012-05-29 | 2015-07-01 | 宜宾丝丽雅集团有限公司 | Material preparation process suitable for preparing dissolving pulp by modifying bleached bamboo paper pulp |
| CN102677496A (en) * | 2012-05-29 | 2012-09-19 | 宜宾长毅浆粕有限责任公司 | Material preparation process for preparing dissolving pulp by modifying bleached bamboo-wood composite pulp |
| CN102926256A (en) * | 2012-11-27 | 2013-02-13 | 保定天鹅股份有限公司 | Denatured production process of bamboo pulp for producing viscose fiber |
| CN102943403A (en) * | 2012-11-27 | 2013-02-27 | 保定天鹅股份有限公司 | Wood pulp denaturalization production process for producing viscose fibers |
| CN102943403B (en) * | 2012-11-27 | 2015-12-23 | 保定天鹅股份有限公司 | A kind of Wood pomace modified producing technology for the production of viscose |
| CN102926256B (en) * | 2012-11-27 | 2016-01-13 | 保定天鹅股份有限公司 | A kind of bamboo pulp denatured productive technology for the production of viscose |
| CN108060597A (en) * | 2017-11-28 | 2018-05-22 | 安徽比伦生活用纸有限公司 | A kind of production method of the household paper pulp of environmental protection and energy saving |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1161212C (en) | 2004-08-11 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Owner name: SHANGHAI 5TH CHEMICAL FIBER PLANT Free format text: FORMER OWNER: SHANGHAI CHEMICAL FIBER PULP GENERAL FACTORY Effective date: 20081010 |
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Effective date of registration: 20081010 Address after: No. 1436, military road, Shanghai, Yangpu District Patentee after: Shanghai fifth chemical fiber factory Address before: No. 218 Minle Road, Spark Development Zone, Shanghai, Pudong Patentee before: Shanghai Chemical Fibre Pulp General Factory |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Jinmao Textile Co., Ltd. Assignor: Shanghai chemical pulp General Factory Contract fulfillment period: 2007.8.2 to 2017.8.2 contract change Contract record no.: 2008310000001 Denomination of invention: Denatured production process of bamboo pulp for producing viscose fiber Granted publication date: 20040811 License type: Exclusive license Record date: 2008.5.27 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.8.2 TO 2017.8.2 Name of requester: SHANGHAI JINMAO TEXTILE CO., LTD. Effective date: 20080527 |
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Granted publication date: 20040811 Termination date: 20120621 |