CN102926256B - A kind of bamboo pulp denatured productive technology for the production of viscose - Google Patents
A kind of bamboo pulp denatured productive technology for the production of viscose Download PDFInfo
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- CN102926256B CN102926256B CN201210490096.5A CN201210490096A CN102926256B CN 102926256 B CN102926256 B CN 102926256B CN 201210490096 A CN201210490096 A CN 201210490096A CN 102926256 B CN102926256 B CN 102926256B
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- xylan
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- viscose
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 34
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 34
- 241001330002 Bambuseae Species 0.000 title claims abstract description 34
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 34
- 239000011425 bamboo Substances 0.000 title claims abstract description 34
- 229920000297 Rayon Polymers 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 33
- 239000003513 alkali Substances 0.000 claims abstract description 28
- 102000004190 Enzymes Human genes 0.000 claims abstract description 17
- 108090000790 Enzymes Proteins 0.000 claims abstract description 17
- 239000002002 slurry Substances 0.000 claims abstract description 14
- 229920001221 xylan Polymers 0.000 claims abstract description 9
- 150000004823 xylans Chemical class 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 230000035484 reaction time Effects 0.000 claims abstract description 8
- 238000004061 bleaching Methods 0.000 claims description 14
- 238000010792 warming Methods 0.000 claims description 12
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 10
- 239000000460 chlorine Substances 0.000 claims description 10
- 229910052801 chlorine Inorganic materials 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 7
- 238000010411 cooking Methods 0.000 claims description 5
- 230000000740 bleeding effect Effects 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 21
- 230000009257 reactivity Effects 0.000 abstract description 10
- 239000003292 glue Substances 0.000 abstract description 7
- 239000002964 rayon Substances 0.000 abstract description 3
- 238000009987 spinning Methods 0.000 abstract description 3
- 238000009835 boiling Methods 0.000 description 13
- 229920000742 Cotton Polymers 0.000 description 8
- 229920005610 lignin Polymers 0.000 description 7
- 230000035699 permeability Effects 0.000 description 7
- 229920002488 Hemicellulose Polymers 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 235000021050 feed intake Nutrition 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 101710121765 Endo-1,4-beta-xylanase Proteins 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- SRBFZHDQGSBBOR-LECHCGJUSA-N alpha-D-xylose Chemical compound O[C@@H]1CO[C@H](O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-LECHCGJUSA-N 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229960003487 xylose Drugs 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000006298 dechlorination reaction Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
For the production of a bamboo pulp denatured productive technology for viscose, for solving the problems such as first fibre is low, reactivity worth is poor.Its special feature is, it carries out according to following operation: pulpboard fragmentation-alkali pre-preg-two sections insulation boiling-wash material-desanding-bacillary this ferment treatment of xylan-bleaching-acid treatment-copy choosing, described bacillary this enzyme treatment process of xylan parameter is: slurry pH value is less than 7-9, temperature 40-50 DEG C, enzyme is diluted to 0.125%, 1.5 ~ 2 hours reaction time, slurry concentration 5-8%, enzyme dosage 45 ~ 80 grams/ton.The fine content of the bamboo pulp first adopting present invention process to produce is high, it is little to pollute, the independent rayon spinning of viscose glue bamboo pulp product succeeds, become yarn quality excellent, fibre strength, whiteness significantly improve, and every physical index has arrived GB/T14463-93 standard Grade A level all.
Description
Technical field
The present invention relates to a kind of manufacture method of textile raw material, especially for the bamboo pulp denatured productive technology producing viscose, belong to textile technology field.
Background technology
Viscose binding textiles, except having excellent gas permeability, dyeability, drapability, also has softness, and elastic wear-resisting, light, the characteristic such as nice and cool, antibacterial, be suitable for doing summer clothes and bedding especially.The raw material of traditional mode of production viscose adopts Cotton Pulp, and due to Cotton Pulp market supply shortage, insider researchs and develops and uses wood pulps, bamboo pulp as the raw material producing viscose.Because viscose requires purity high (first fibre is high, grey, iron content is low) and bamboo pulp relative to one being that lignin hemicellulose level is high, the fine content of first is low cotton pulp to pulp, two is that in bamboo pulp, lignin hemicellulose is more difficult removes.Conventionally method, manufacturer's bamboo wood is raw material, slough most of lignin by chemical steaming method and make slurry, continue chemically high pressure-temperature again and remove lignin and hemicellulose, technological process generally: pulpboard, fragmentation, High Temperature High Pressure boiling, washing, bleaching, acid treatment, wash, pulp of manufacturing paper with pulp.The shortcoming of existing technique is: bamboo pulp need obtain through chemical thermophilic digestion, and energy consumption is comparatively large, pollution is large, and in bamboo pulp, residual lignin is comparatively difficult to remove, and the product first fibre produced is low, reactivity worth is poor.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of spinnability strong, pollute the little bamboo pulp denatured productive technology for the production of viscose.
Problem alleged by the present invention is solved by following technical scheme:
A kind of bamboo pulp denatured productive technology for the production of viscose, it carries out according to following operation: pulpboard fragmentation-alkali pre-preg-bis-section insulation boiling-wash material-desanding-bacterial xylanase process-bleaching-acid treatment-copy choosing, described bacillary this ferment treatment of xylan operation: slurry pH=7-9, temperature 45-50 DEG C, the mass concentration of zytase is diluted to 0.125%, in 1.5 ~ 2 hours reaction time, slurry mass concentration 5-8%, the consumption of zytase is 45 ~ 80 grams/ton.
The above-mentioned bamboo pulp denatured productive technology for the production of viscose, not admission after the raw material dress ball of alkali pre-preg is turned 20 minutes by described two sections of insulation cooking process, is warming up to 100 ~ 120 DEG C, pressure 0.25 ~ 0.3MPa, is incubated 30 minutes; Be warming up to 167-173 DEG C again, pressure 0.7-0.74MPa, time 15-20 minute; Steam bleeding to pressure 0.1-0.15MPa, time 10-15 minute; Be warming up to 172 ~ 173 DEG C three times, be incubated 2 ~ 2.5 hours, pressure 0.75-0.77MPa.
Adopt two sections to be incubated digesting technoloy, low-pressure permeability ensures raw material infiltration evenly, improves reactivity worth, reduces the damage of first fibre, favourable lignin stripping.
The above-mentioned bamboo pulp denatured productive technology for the production of viscose, described dipping process alkali charge is 14.5 ~ 20% of the pulpboard oven-dry weight loaded in rotary spherical digester, and the bath raio between pulpboard oven-dry weight and the total liquid measure of boiling is 1:3.5 ~ 1:4, feed temperature >=80 DEG C.
The present invention is directed to existing bamboo pulp production method energy consumption comparatively large, pollute large, the problems such as product first fibre is low, reactivity worth is poor are improved, it is according to the constituent structure feature of bamboo pulp, two sections are adopted to be incubated digesting technoloy, low-pressure permeability ensures medicine infiltration evenly, improves reactivity worth and reduces the favourable lignin stripping of first fibre damage; Adopt bacillary this enzyme treatment process of xylan to carry out degradation of hemicellulose to make it to become soluble saccharide and separate, improve the fine content of first.The fine content of the bamboo pulp first adopting present invention process to produce is high, it is little to pollute, the independent rayon spinning of viscose glue bamboo pulp product succeeds, become yarn quality excellent, fibre strength, whiteness significantly improve, and every physical index has arrived GB/T14463-93 standard Grade A level all.
Detailed description of the invention
Technological process of the present invention is: pulpboard fragmentation-alkali pre-preg-bis-section insulation boiling-wash material-desanding-this ferment treatment of the bacillary xylan of MPa-bleaching-acid treatment-copy choosing.Master operation effect and parameter as follows:
Alkali pre-preg: insoluble bamboo pulp is pulverized through pulverizer by bamboo pulp, feeding auger squeezer after cyclonic separation spray alkali is delivered to through blower fan, to pulverizing. the insoluble bamboo pulp fiber after alkali pre-preg carries out extruding infiltration, produce the first kind fiber fineness of bamboo pulp for improving sex change and reduce the degree of polymerization and prepare, and laying the foundation for next procedure.Important technological parameters: measuring with alkali (NaOH) is 14.5-20% by mass percentage, bath raio 1:3.5-4, MPa feed intake and send into rotary spherical digester temperature >=80 DEG C.
Two sections of insulation boilings: this operation boiling adopts low-pressure permeability, High Temperature High Pressure, three intensifications, secondary insulation, its objective is and reduce the bleached sulphate bamboo pulp plate degree of polymerization, improves the fine content of first.Concrete steps are as follows: after MPa (1) feeds intake, rotary spherical digester not admission turns 20 minutes; (2) low-pressure permeability, is warming up to 100 ~ 120 DEG C, pressure 0.25 ~ 0.3MPa, is incubated 30 minutes; (3) High Temperature High Pressure boiling, then be warming up to 167-173 DEG C, pressure 0.7-0.74MPa, time 15-20 minute; Steam bleeding to pressure 0.1-0.15MPa, time 10-15 minute; Be warming up to 172 ~ 173 DEG C three times, be incubated 2 ~ 2.5 hours, pressure 0.75-0.77MPa.Cooking effect: DP545 ± 25, first fibre is greater than 92%, and reactivity worth 7C.C. can obtain and pass through.For later process establishes technology basis.
Wash material, evacuate disposed slurry square auger net belt type pulp washing machine washing material, object simplifies operation, economized labor and materials and electric power, and efficiently, continuously, evenly impurity elimination, eliminate alkali, does technique ensure for rear operation improves pulp whiteness.Its technical parameter is: half stuff is containing alkali>=2000g/m
3, pulp washing speed 22m/min, pulp layer thickness 10-15mm, alkali number 60-80g/m after MPa pulp washing
3, by half stuff containing alkali>=2000g/m
3be reduced to 60-80g/m
3)
Desanding, adopts two road desanding, and be divided into open and hermetic type two kinds, open desanding main purpose is deslagging, and closed desanding utilizes centrifugal force removal of impurities.Desanding bottle-type 600#, 606#.Desanding operating pressure > 0.25MPa.
Bacillary this ferment treatment of xylan, this operation adopts the directed degradation technique of bacterial xylanase effectively to remove hemicellulose, improves the fine content of first, reaches pulp purification object, makes the fine content of first reach more than 95%.This operation zytase consumption 45 ~ 80 grams/ton (drift machine dress 1.8 tons, slurry, adjusting pH=7-9 40-50 degree of heating that the enzyme diluted is added 81-144 gram), be diluted to 0.125%, slurry pH value is less than 9, temperature 50 C, reaction time 1.5-2 hour.The fine main chain of bamboo pulp half only has wood sugar, and branched-chain component is simple and content is less, with the wood sugar in zytase degradation of hemicellulose.
Zytase in the present invention adopts paper pulp ameliorative zytase AU-PE89.
Bleaching, the object of bleaching continues to remove pigment impurity and falls poly-and do not damage first fibre.Alkali is added with bleaching liquor in this technique after ferment treatment.According to index DP≤480 effective chlorine 0.1g/L, 480<DP<500 such as slurry polymerisation degree; Effective chlorine 0.15g/L; 500<DP≤520, DP>520, DP often increase by 10 increase effective chlorine 0.05g/L, bleaching time 40-70 minute, temperature 40-47 degree.Effect after bleaching: whiteness >=83%, DP520 ± 20, first fibre >=95%, ash content < 0.15%, irony≤14P.P.M, inhale base number 570, reactivity worth 7C.C. passes through.
According to above-mentioned technological process after batch production, be achieved by the independent rayon spinning of viscose glue bamboo pulp product, and become yarn quality excellent, fibre strength. whiteness significantly improves, and compare spinnability with Cotton Pulp strong, its physical index has arrived GB/T14463-93 standard Grade A all, tow gloss appearance, smooth, there is gas permeability. dyeability. drapability well outside, also there is softness, elastic wear-resisting. light. nice and cool. the characteristic such as antibacterial, special adaptation, does summer clothes, as T-shirt, Ms's fashionable dress, bedding etc.
Adopt present invention process to be solubility viscose bamboo fiber pulp by insoluble bamboo pulp denatured production, its Indexes Comparison is as follows:
After front sex change production is produced in Project Unit sex change
Moisture %10 ± 1,
Degree of polymerization DP1341500 ± 20,
Fine %≤87.1 >=94.0 of first,
Ash content≤%1.130.10,
Irony≤P.P.M2814,
Inhale base number ﹥ %709570,
Whiteness >=%-83,
Little dust 0.03-3.0 ㎜
210550,
Large dust 3.0 ㎜
221,
Reactivity worth 7C.C.--passes through.
The viscose glue bamboo pulp adopting present invention process to produce and viscose cotton pulp primes technical indicator are compared as follows:
Project Unit viscose glue bamboo pulp viscose cotton pulp (ministry standard)
Moisture %10 ± 1-,
Degree of polymerization DP500 ± 20500 ± 20,
The fine %94.093.0 of first,
Ash content≤%0.100.11,
Irony≤P.P.M1420,
Inhale base number ﹥ %570500,
Whiteness >=%8281,
Little dust 0.03-3.0 ㎜
250140,
Large dust 3.0 ㎜
211,
Reactivity worth 7C.C. is by passing through.
Contrasted from These parameters, the viscose glue glue bamboo pulp that present invention process is produced can compare favourably with viscose cotton pulp product.
Production technology of the present invention and Cotton Pulp technics comparing, can reduce factory effluent discharge capacity 40%.Because bamboo pulp cooking liquor colourity is little, strengthen black liquor recovery amount, both decreased alkali charge, and also decreased discharge simultaneously.
Several specific embodiment is below provided:
Embodiment 1:
Every ball fill 5.8 tons paddle board crusher in crushing by thermokalite preimpregnation (measure 14.5%, bath raio 1:3.5 with alkali (NaOH), feed intake send into rotary spherical digester temperature >=80 DEG C, 1) feed intake after rotary spherical digester not admission turn 20 minutes; (2) low-pressure permeability, is warming up to 100 ~ 120 DEG C, pressure 0.25 ~ 0.3MPa, is incubated 30 minutes; (3) High Temperature High Pressure boiling, then be warming up to 167-173 DEG C, pressure 0.7-0.74MPa, time 15-20 minute; Steam bleeding to pressure 0.1-0.15MPa, time 10-15 minute; Be warming up to 172 ~ 173 DEG C three times, be incubated 2 ~ 2.5 hours, pressure 0.75-0.77MPa.(cooking effect: DP545 ± 25, first fibre is greater than 92%, and reactivity worth 7C.C. can obtain and pass through.), after boiling terminates, wash after material, desanding through guipure and enter enzyme treatment process.After slurry installs, regulate slurry pH=7, heat, temperature 45 C, enzyme dosage 45 grams/ton, the 1.5 hours reaction time (the fine content 94.6 of result first).After ferment treatment terminates, add alkali with bleaching liquor (bleaching process parameter: effective chlorine 0.28g/L, alkali tune amount 50g/m
3), bleaching terminates rear dechlorination acid adding, carries out acid treatment 60 minutes, washes after material, desanding manufacture paper with pulp into pulp through guipure.
Boiling alkali charge 14.5%, bath raio 1:3.5.Boiling DP550, first fibre 94.%, enzyme treatment process pH=7, temperature 45 C, reaction time 1.5, enzyme dosage 45 grams, the fine content 94.6% of result first; Bleaching process parameter: effective chlorine 0.28g/L, acid is than 0.8%, alkali tune amount 50g/m
3(alkali tune amount refers to the sodium hydrate content that ton is starched), whiteness 81, first fibre 94.65%.
Embodiment 2: boiling alkali charge 18%, bath raio 1:3.6.Boiling DP557, fine 94.3% enzyme treatment process of first, pH=8, temperature 47 DEG C, 2 hours reaction time.Enzyme dosage 63 grams, result: the fine content of first: 95.3%, bleaching process parameter: effective chlorine 0.3g/L, acid is than 0.84%, alkali tune amount 70g/m
3, whiteness 82, first fibre 95.4%.
Embodiment 3:
Boiling alkali charge 20%, bath raio 1:4.Boiling DP550, first fibre 94.5%, enzyme treatment process: pH=9, temperature 50 C, 2 hours reaction time, enzyme dosage 80 grams, result: the fine content 96.2% of first, bleaching process parameter: effective chlorine 0.32g/L, acid is than 0.9%, alkali number 80g/m
3, whiteness 83, first fibre 96.2%.
Claims (1)
1. the bamboo pulp denatured productive technology for the production of viscose, it is characterized in that: it carries out according to following operation: pulpboard fragmentation-alkali pre-preg-bis-section insulation boiling-wash material-desanding-bacillary this ferment treatment of xylan-bleaching-acid treatment-copy choosing, described bacillary this enzyme treatment process of xylan parameter is: slurry pH value equals 7-9, temperature 40-50 DEG C, the mass concentration of zytase is diluted to 0.125%, 1.5 ~ 2 hours reaction time, slurry mass concentration 5-8%, this enzyme dosage of xylan 45 ~ 80 grams/ton;
Not admission after the raw material dress ball of alkali pre-preg is turned 20 minutes by described two sections of insulation cooking process, is warming up to 100 ~ 120 DEG C, pressure 0.25 ~ 0.3MPa, is incubated 30 minutes; Be warming up to 167-173 DEG C again, pressure 0.7-0.74MPa, time 15-20 minute; Steam bleeding to pressure 0.1-0.15MPa, time 10-15 minute; Be warming up to 172 ~ 173 DEG C three times, be incubated 2 ~ 2.5 hours, pressure 0.75-0.77MPa;
Described dipping process alkali charge is 14.5 ~ 20% by mass percentage, bath raio: 1:3.5 ~ 1:4, feed temperature >=80 DEG C;
The operating pressure > 0.25MPa of described desanding;
Described bacillary this enzyme of xylan adopts this enzyme of xylan AU-PE89;
In bleaching process, according to slurry polymerisation degree index DP≤480 effective chlorine 0.1g/L, 480<DP<500; Effective chlorine 0.15g/L; 500<DP≤520, DP>520, DP often increase by 10 increase effective chlorine 0.05g/L; Bleaching time 40-70 minute, temperature 40-47 DEG C
.
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| CN113882182A (en) * | 2021-10-21 | 2022-01-04 | 新疆中泰纺织集团有限公司 | Method for producing reed pulp for viscose fiber by using reed pulp board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1385287A (en) * | 2002-06-21 | 2002-12-18 | 上海化纤浆粕总厂 | Bamboo pulp denatured productive technology |
| CN102031714A (en) * | 2010-11-17 | 2011-04-27 | 南通醋酸纤维有限公司 | Production method of vinegar-grade bamboo pulp |
| CN102121201A (en) * | 2010-11-22 | 2011-07-13 | 福建农林大学 | Preparation method of bamboo dissolving pulp |
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|---|---|---|---|---|
| JPH02259180A (en) * | 1989-03-29 | 1990-10-19 | Kobe Steel Ltd | Production of pulp by microbial treatment |
| FI20041152L (en) * | 2002-03-06 | 2004-09-06 | Iogen Bio Products Corp | Xylanase treatment of chemical pulp |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1385287A (en) * | 2002-06-21 | 2002-12-18 | 上海化纤浆粕总厂 | Bamboo pulp denatured productive technology |
| CN102031714A (en) * | 2010-11-17 | 2011-04-27 | 南通醋酸纤维有限公司 | Production method of vinegar-grade bamboo pulp |
| CN102121201A (en) * | 2010-11-22 | 2011-07-13 | 福建农林大学 | Preparation method of bamboo dissolving pulp |
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