CN1161212C - Bamboo pulp denatured productive technology - Google Patents
Bamboo pulp denatured productive technology Download PDFInfo
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- CN1161212C CN1161212C CNB021121753A CN02112175A CN1161212C CN 1161212 C CN1161212 C CN 1161212C CN B021121753 A CNB021121753 A CN B021121753A CN 02112175 A CN02112175 A CN 02112175A CN 1161212 C CN1161212 C CN 1161212C
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- bamboo pulp
- bamboo
- alkali
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Abstract
The present invention discloses bamboo pulp denaturation production technology, which relates to bamboo fiber adhesive pulp production technology. According to the pulp production technology, the bamboo pulp denaturation production technology mainly comprises the following steps: alkali presoaking, secondary steaming and boiling, flat plate (belt) type material wash and leak flotation. The present invention can produce non-solubility bamboo pulp to soluble adhesive bamboo pulp in a denatured mode, and the adhesive bamboo pulp is approximate or excellent to the technical indices of first quality ware of adhesive cotton pulp. Compared with the cotton pulp production, 35% of production waste water discharge quantity is reduced. The present invention opens a new path for producing bamboo fiber adhesive pulp, develops new species of adhesive pulp, and is favorable to the sustainable development of adhesive pulp production of big cities utilizing technical advantages.
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; 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, comprise that alkali pre-preg, secondary boiled, dull and stereotyped (band) formula wash material, ooze operations such as floating, wash material, removal of impurities.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 ℃.
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.
Described secondary boiled be to carrying out the boiling second time through the bamboo pulp of once boiling.Processing step is: the cold commentaries on classics of not admission of rotary spherical digester was 20-30 minute after (1) fed intake; (2) High Temperature High Pressure boiling, wherein, heating curve 2 hours, total 2 hours heating-up times, heating curve is by 32 venting that heat up, and after last heated up, holding temperature was between 170-175 ℃, and pressure is 0.77 ± 0.02MPa.
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, alkali number 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:
Index relatively before and after the bamboo pulp denatured production of table 1
After sex change was produced before the sex change of project unit was produced
Moisture content % 10 ± 1
Degree of polymerization DP 1,341 500 ± 20
The fine % of first≤87.1 〉=93.0
Ash≤% 1.13 0.10
Irony≤P.P.M 28 14
Inhale base number＞% 709 570
Whiteness 〉=%-81
Little dust＜＞0.03-3.0mm
2105 50
Big dust＜＞3.0mm
221
Reactivity worth 7C.C.-pass through
2, adopt the viscose glue bamboo pulp product of modified production process of the present invention to compare favourably, see the following form 2 with similar viscose glue cotton pulp dregs of rice product:
Table 2 viscose glue bamboo pulp, the viscose glue cotton pulp dregs of rice-level product 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
Inhale 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 is 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 accompanying drawing, shown in the 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.Its 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, adopts High Temperature High Pressure, three intensifications, secondary venting, and the technology purpose is to reduce the insoluble bamboo pulp degree of polymerization, improves the fine purity of first.Processing step is: the cold commentaries on classics of not admission of rotary spherical digester was 20-30 minute after (1) fed intake; (2) High Temperature High Pressure boiling.
Important technological parameters: heating curve 2 hours, total 2 hours heating-up times, 32 venting that heat up, last heats 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, alkali number 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, chloridized is 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 the 10th, 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 (4)
1, bamboo pulp denatured productive technology, according to the pulp production technology, it is characterized in that: comprise that alkali pre-preg, secondary boiled, flat board or belt wash material, ooze and float, wherein, described alkali pre-preg is to pass through opener with insoluble bamboo pulp shredding, impurity elimination, feeding auger squeezer after separating spray alkali, to pulverize, insoluble bamboo pulp fiber after the alkali pre-preg pushes infiltration, technological parameter is: alkali charge 19-26%, bath raio 1: 3.75-1: 3.90, feed intake and send into rotary spherical digester temperature 〉=80 ℃.
2, 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) the cold commentaries on classics of not admission of rotary spherical digester afterwards 20-30 minute that feeds intake; (2) High Temperature High Pressure boiling, wherein, 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.
3, 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 or belt are 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
4, 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021121753A CN1161212C (en) | 2002-06-21 | 2002-06-21 | Bamboo pulp denatured productive technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1385287A CN1385287A (en) | 2002-12-18 |
| CN1161212C true CN1161212C (en) | 2004-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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
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| CN1385287A (en) | 2002-12-18 |
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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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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 |