CN104109910A - Method for producing viscose fiber from pulp used for papermaking - Google Patents
Method for producing viscose fiber from pulp used for papermaking Download PDFInfo
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- CN104109910A CN104109910A CN201310592702.9A CN201310592702A CN104109910A CN 104109910 A CN104109910 A CN 104109910A CN 201310592702 A CN201310592702 A CN 201310592702A CN 104109910 A CN104109910 A CN 104109910A
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Abstract
The invention relates to a method for producing a viscose fiber from pulp used for papermaking. The method adopts pulp used for papermaking, prepares a spinning stock solution through alkaline soaking, pressurized soaking, squeezing, yellowing and the like and then prepares the viscose fiber by using a wet spinning method. According to the invention, aging-free process is employed for production of the viscose fiber, and direct usage of papermaking pulp for production of the viscose fiber is realized. The method provided by the invention discards the procedure of aging, shortens process links, is more scientific and reasonable and achieves the purposes of energy conservation and consumption reduction. The viscose fiber produced by using the method has good wearability, good spinnability and better integral usefulness compared with the prior art.
Description
Technical field
The present invention relates to a kind of production method of viscose, specifically a kind of method taking paper grade (stock) pulp as main material production viscose.
Background technology
Tradition cellulose viscose manufacturing technique taking be exclusively used in viscose produce pulp as raw material, this kind of pulp is compared with common paper-making pulping production technology, process regulation requires high, and pulp quality requirements reaches the index requests such as the degree of polymerization, iron content, viscosity, ash, dust of viscose production use.Not only cost is higher for the special pulp of viscose production and application, and for quantity not sufficient, subsequent availability development can not meet viscose industry development demand, common paper grade (stock) pulp is owing to being subject to the restriction of production technology and controlled condition simultaneously, many indexes can not reach viscose glue production requirement, can not directly apply to viscose and produce.Researching and developing a kind of paper grade (stock) pulp that adopts is the technology that raw material is produced viscose, can reduce the requirement of existing viscose production technology to pulp quality, thereby eliminate because of the restriction of raw material supply deficiency to industry development, also for paper-making pulping industry provides new Application Areas, realize inter-trade Linking Development, promote the common progress of China's viscose production technology and paper-making pulping industry.
Summary of the invention
Goal of the invention of the present invention is can not be directly used in viscose for prior art paper grade (stock) pulp to produce this problem, it is the method that raw material is produced viscose that a kind of paper grade (stock) pulp that can directly adopt is provided, realize paper grade (stock) pulp and be directly used in viscose production, and the viscose product quality of producing reaches the requirement of GB GB/T14463-2008 or relevant industries standard.
Realize foregoing invention object by the following technical solutions:
Produce a method for viscose with paper grade (stock) pulp, the paper grade (stock) pulp that described viscose is is 1000-1400 by the degree of polymerization is produced, and its production method comprises the steps:
(1) adhesive-preparing technology: described adhesive-preparing technology by flooding, squeezing, yellow, rear dissolving, filtration, deaeration operation form, and makes the spinning solution for the production of viscose;
(2) spinning technique: adopt wet-formedly, spinning solution directly contacts spinning with spinning bath, makes nascent viscose;
(3) aftertreatment technology: by the thermophilic digestion of 90-100 DEG C, pickling, washing, desulfurization, bleach, oil, baking operation, make finished product viscose.
Further, described dipping process comprises alkali steeping, impregnating by pressure.
Further, described alkali steeping operation is for repeatedly flooding, and maceration extract is NaOH solution, temperature is 40-50 DEG C, concentration is 350-200g/L, the auxiliary agent B erol Visco 388 that adds Akzo Nobel N.V. of Sweden to produce when dipping, and each dip time is 20-40min.
Further, the dipping number of times of described alkali steeping operation is 2-5 time.
Further, the medium that described impregnating by pressure operation adds is compressed air or oxygen, impregnation pressure 0.3-0.55MPa, and dipping temperature is 40-100 DEG C, dip time 20-40min.
Further, the technical indicator of described finished product viscose reaches the product index requirement of GB GB/T14463-2008 or relevant industries standard.
Adopt technique scheme, compared with the production method of existing common viscose fiber, main raw material of the present invention is paper grade (stock) pulp, its production technology has been cancelled experienced operation, has shortened the production process time, has improved production efficiency, adopt paper grade (stock) pulp is raw material simultaneously, expand viscose and produced the source with raw material, improved the ability of viscose glue industry reply raw materials market risk, reduced cost.Also the Application Areas that has expanded paper grade (stock) pulp, has realized inter-trade common development simultaneously.The viscose final product of producing can reach the product index requirement of GB GB/T14463-2008 or relevant industries standard.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be further described.
The present embodiment is a kind of production method of producing viscose with paper grade (stock) pulp, and the method has been cancelled experienced operation, and its production method comprises the steps:
A, dipping:
Alkali steeping: selecting paper grade (stock) pulp is raw material, adds alkali lye to flood, dipping number of times three times.Dipping for the first time: temperature 45 C, steeping liquor 345g/L, dipping bath is than 10:1(alkali lye: pulp weight ratio), V388 addition be to pulp methyl fiber weight 0.5%, dip time 25min; Dipping for the second time: 48 DEG C of temperature, steeping liquor 280g/L, dipping bath is than 10:1(alkali lye: pulp weight ratio), V388 addition be to pulp methyl fiber weight 0.2%, dip time 20min; Dipping for the third time: temperature 50 C, steeping liquor 225g/L, dipping bath is than 10:1(alkali lye: pulp weight ratio), V388 addition be to pulp methyl fiber weight 0%, dip time 20min.
Impregnating by pressure, after alkali steeping operation completes, carries out impregnating by pressure, adds oxygen, oxygen additional proportion: 10-40kg/t pulp in slurry congee simultaneously.Dipping temperature is 55 DEG C, impregnation pressure 0.50-0.52MPa, dip time 35min; Alkali cellulose polymerization degree measurement value 325 after dipping.
B, squeezing, yellow: the slurry congee through impregnating by pressure is squeezed, obtain alkali cellulose after squeezing, alkali cellulose enters yellow operation after pulverizing, cooling, adds CS
2, addition is to the fine weight ratio 30.5% of first;
C, rear dissolving, filtration, deaeration: dissolving after routine after alkali cellulose yellow, filtration, deaeration technique obtain spinning solution; Spinning solution composition: first fibre: 8.75% (weight ratio), containing alkali: 4.9%(weight ratio), viscosity: 48s, degree of ripeness: 13.5.
D, spinning: adopt the wet-formed technique spinning of conventional viscose, spinning solution is directly contacted to spinning with spinning bath, make nascent viscose.Spinning bath composition: sulfuric acid: 115g/L, sodium sulphate: 335g/L, zinc sulfate: 10.8g/L, temperature: 49 DEG C.Spinneret draft 45%, plasticizing drawing-off: 65%.
E, aftertreatment technology: adopt conventional viscose to produce aftertreatment technology and carry out post processing.By nascent viscose by thermophilic digestion, pickling, washing, desulfurization, bleach, oil, the operation such as oven dry, make the viscose that can be used for weaving or nonwoven fabric raw material.
Boiling: 98 DEG C; Pickling: sour dense 12g/L, 95 DEG C, desulfurization: NaOH:3.3g/L, 78 DEG C of temperature; Bleaching: NaClO:0.8g/L, 55 DEG C of temperature; 75 DEG C of washing temperature; Oil: oil bath concentration: 9.5g/L, 68 DEG C of temperature; Bake out temperature 90-130 DEG C, dry in 2nd district.
The viscose obtaining: fiber number: 1.65dtex, dry strong: 2.23CN/dtex, wet strong: 1.15CN/dtex, fault: 2.5mg/100g fiber, residual sulphur: 7.8mg/100g fiber.
Above-described embodiment has only been expressed one embodiment of the present invention, but can not therefore be interpreted as limitation of the scope of the invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (6)
1. a method of producing viscose with paper grade (stock) pulp, is characterized in that: the paper grade (stock) pulp that described viscose is is 1000-1400 by the degree of polymerization is produced, and its production method comprises the steps:
(1) adhesive-preparing technology: described adhesive-preparing technology by flooding, squeezing, yellow, rear dissolving, filtration, deaeration operation form, and makes the spinning solution for the production of viscose;
(2) spinning technique: adopt wet-formedly, spinning solution directly contacts spinning with spinning bath, makes nascent viscose;
(3) aftertreatment technology: thermophilic digestion, pickling, washing, desulfurization by nascent viscose by 90-100 DEG C, bleach, oil, baking operation, make finished product viscose.
2. according to the method for producing viscose with paper grade (stock) pulp described in claims 1, it is characterized in that, described dipping process comprises alkali steeping, impregnating by pressure.
3. according to a kind of method of producing viscose with paper grade (stock) pulp described in claims 2, it is characterized in that, described alkali steeping operation is for repeatedly flooding, maceration extract is NaOH solution, temperature is 40-50 DEG C, concentration is 350-200g/L, the auxiliary agent B erol Visco 388 that adds Akzo Nobel N.V. of Sweden to produce when dipping, and each dip time is 20-40min.
4. a kind of method of producing viscose with paper grade (stock) pulp according to claim 3, is characterized in that, described alkali steeping operation dipping number of times is 2-5 time.
5. according to a kind of method of producing viscose with paper grade (stock) pulp described in claims 2, it is characterized in that, the medium that described impregnating by pressure operation adds is compressed air or oxygen, impregnation pressure 0.3-0.55MPa, dipping temperature is 40-100 DEG C, dip time 20-40min.
6. according to a kind of method of producing viscose with paper grade (stock) pulp described in claims 1, it is characterized in that: described viscose final product technical indicator reaches the product index requirement of GB GB/T14463-2008 or relevant industries standard.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310592702.9A CN104109910A (en) | 2013-11-22 | 2013-11-22 | Method for producing viscose fiber from pulp used for papermaking |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310592702.9A CN104109910A (en) | 2013-11-22 | 2013-11-22 | Method for producing viscose fiber from pulp used for papermaking |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108053818A (en) * | 2018-01-25 | 2018-05-18 | 上海钱丰纺织品有限公司 | Loudspeaker locating branch slice and preparation method thereof |
| CN109706770A (en) * | 2018-12-25 | 2019-05-03 | 新疆富丽达纤维有限公司 | A kind of pulping production technology that production procedure is short |
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|---|---|---|---|---|
| CN1851115A (en) * | 2006-05-22 | 2006-10-25 | 东华大学 | Method for direct manufacturing regenerated bamboo fiber from papermaking-level bamboo pulp dregs |
| CN101602810A (en) * | 2008-06-10 | 2009-12-16 | 宜宾海丝特纤维有限责任公司 | Plant fiber degrading and polymerizing technology |
| CN101906675A (en) * | 2010-08-26 | 2010-12-08 | 河北吉藁化纤有限责任公司 | Preparation method of jute viscose |
| CN103387618A (en) * | 2013-08-23 | 2013-11-13 | 唐山三友集团兴达化纤有限公司 | Oxidative degradation method of plant cellulose |
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2013
- 2013-11-22 CN CN201310592702.9A patent/CN104109910A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1851115A (en) * | 2006-05-22 | 2006-10-25 | 东华大学 | Method for direct manufacturing regenerated bamboo fiber from papermaking-level bamboo pulp dregs |
| CN101602810A (en) * | 2008-06-10 | 2009-12-16 | 宜宾海丝特纤维有限责任公司 | Plant fiber degrading and polymerizing technology |
| CN101906675A (en) * | 2010-08-26 | 2010-12-08 | 河北吉藁化纤有限责任公司 | Preparation method of jute viscose |
| CN103387618A (en) * | 2013-08-23 | 2013-11-13 | 唐山三友集团兴达化纤有限公司 | Oxidative degradation method of plant cellulose |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108053818A (en) * | 2018-01-25 | 2018-05-18 | 上海钱丰纺织品有限公司 | Loudspeaker locating branch slice and preparation method thereof |
| CN109706770A (en) * | 2018-12-25 | 2019-05-03 | 新疆富丽达纤维有限公司 | A kind of pulping production technology that production procedure is short |
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Application publication date: 20141022 |