CN102251421A - Method for producing dissolving pulp from bamboo - Google Patents
Method for producing dissolving pulp from bamboo Download PDFInfo
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- CN102251421A CN102251421A CN2011101411962A CN201110141196A CN102251421A CN 102251421 A CN102251421 A CN 102251421A CN 2011101411962 A CN2011101411962 A CN 2011101411962A CN 201110141196 A CN201110141196 A CN 201110141196A CN 102251421 A CN102251421 A CN 102251421A
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Abstract
The invention provides a method for producing dissolving pulp from bamboo, relating to the field of pulping and weaving. By using cheap chemical assistants which have good environment friendliness and can be easily purchased for pretreating raw material, the method can effectively reduce the pollution load of waste water in comparison with other processes, so that the pretreated waste water can be used effectively and repeatedly; the treated raw material is subjected to boiling and pulping in the presence of a multi-component protecting agent, so that a better pulping effect can be achieved under the action of the multi-component protecting agent, and the influence of metal ions can be effectively inhibited or eliminated, thereby reducing the metal ion content of the final pulp; and the pulp is subjected to combined bleaching under the action of an environment-friendly bleacher, thereby enabling the final pulp to have fine performance. The method is applicable to various kinds of bamboo, and the produced dissolving pulp has superior performance and meets the requirements of the national textile industry for standard bamboo dissolving pulp products. Compared with other methods, the method provided by the invention has the advantages of good environment friendliness, energy-saving process and full utilization of resources, and improves the added value of the dissolving pulp at the same time.
Description
Technical field
The present invention relates to a kind of bamboo wood and produce the method for dissolving pulp, technological leapfrogging slurrying and field of textiles.
Background technology
As everyone knows, dissolving pulp production at present is many to be main raw material with timber or cotton linter or numb skin etc., makes the raw material that applies to chemical fibre industry---dissolving pulp through the series of process processing.Higher because of alpha cellulose content in cotton linter, numb skin and the wood raw material, be used to produce chemical fibre dissolving pulp yield height, production cost is low, produces easily, and gained dissolving pulp quality is good, also is the main raw material that whole world dissolving pulp is produced.Because the boom of China's textile industry in recent years causes long fibered raw material prices such as cotton linter and numb skin soaring gradually; And because paper industry flourishing, timber resources puts upon the full stretch, and especially China's timber resources is seriously deficient.Above factor causes adopting above-mentioned several raw material production chemical fibre to significantly improve with the dissolving pulp cost, in addition chemical fibre industry expand production fast cause in the world cotton linter, supply falls short of demand for the isometric fibre resources of numb skin.On the other hand, along with live taste and to the raising of healthy attention degree of the common people, the consumer is also more and more higher to the requirement of clothes, because the antibiotic or bacteriostasis of cotton, fiber crops and xylon is poor, or heat radiation hydrofuge function is low, and the clothes of such raw material production are subjected to certain treating coldly again, or added value is low.If in fabrication processes, artificially add antibiotic or antibacterial additive, may exert an influence to skin, perhaps finished product weakens through the several effect after wash ﹠ pressing and loses, and can not produce a desired effect.Therefore natural antibacterial strong heat radiation hydrofuge fibrous raw material is opened people's concern gradually.
The object of the present invention is to provide a kind of bamboo material that utilizes to produce the method for chemical fibre with bleached dissolving pulp.China's bamboo material deposit is abundant, and the resource owning amount is the first in the world.Bamboo timber resource itself belongs to fast production-goods source simultaneously, and bamboo fibre self has the bacteriostasis antibiosis effect, has the appearance of bacteriostasis antibiosis functional products such as active bamboo at present.Bamboo material is through after the processing of certain advanced technologies technology, and the fiber of making is except that some specific functions that have natural bamboo, and the bamboo fiber of process artificial treatment can reach other and more help healthy effect.
Summary of the invention
The invention provides a kind of bamboo wood and produce the method for dissolving pulp.This method reduced investment, energy consumption is little, and production cost is low, dissolving pulp yield height, the production efficiency height, environment friendly is strong, and dissolving pulp can be used as the raw material that chemical fibre industry is used.
For reaching above purpose, the present invention by the following technical solutions:
(1) the rotten bamboo wood of all kinds of nothings adopts bamboo chipper to chip, the long 1～5cm of bamboo chip specification * wide 1～3cm, qualification rate 〉=95%;
(2) qualified bamboo tablet is with containing oxalic acid, tartaric acid, the water logging bubble of citric acid or the method for water boiling are carried out organic acid prehydrolysis, wherein water logging bubble pre-hydrolysis method condition is: oxalic acid 0～1%, tartaric acid 0～1%, citric acid 0～2%, liquor ratio 1: 1～1: 100,10～100 ℃ of water temperatures, soak time 1～100 hour; Or the pre-boiling method for hydrolysis of water condition is: oxalic acid 0～1%, tartaric acid 0～1%, citric acid 0～2%, liquor ratio 1: 2～1: 100, time 2～300min, boiling temperature 〉=100 ℃;
(3) will through the raw material of prehydrolysis with send into the kraft cooking slurrying that digesting apparatus carries out the agent of the compound alkali duplicate protection of black liquor after chemical liquid evenly mixes, condition is: potassium hydroxide 0～10%, caustic soda 1～30%, EDTA four sodium 0～0.5%, anthraquinone 0～1%, green oxygen 0～2%, vulcanized sodium 1～30%, 100～200 ℃ of temperature, time 60～300min, liquor ratio 1: 1～1: 10; Require slurry KMnO
4Hardness is 1～20, whiteness 〉=15%ISO;
(4) adopt thickener to concentrate extraction rate of black liquor 〉=80% to boiling into the sulfate slurry;
(5) adopt dissociation apparatus after diluting, to discongest filtering stock, wash degree≤0.25g (Na through concentrated slurry
2O)/L;
(6) cleaning slurry adopts pulp screen to screen;
(7) the screening disposed slurry adopts the ECF technological process of hypochlorite (H) Peracetic acid (Pa) acid treatment (A) to bleach;
(8) through the bleaching slurry dehydrate after fully washing the bleaching bamboo dissolved pulp.
Above-mentioned chemicals is the general chemical product, and each chemicals usage is different because of flow process and raw material, and the chemicals usage among the present invention is controlled at:
A. slurrying
B. bleaching
The invention has the advantages that: 1. this method has at first been carried out organic acid prehydrolysis to raw material, with the grade content of useless composition of poly-pentose, the ash that is lowered into dissolving pulp, the effect of prehydrolysis has been quickened in the interpolation of oxalic acid and tartaric acid and citric acid, reduces simultaneously and pollutes; 2. this method has adopted the pulp washing black liquor as boiling liquid, use caustic soda and the compound alkali of potassium hydroxide, and protect, used the effective place to go of EDTA four sodium inorganic metal ion simultaneously with green oxygen and the agent of anthraquinone duplicate protection, make the pulping process high-efficiency environment friendly, slurry performance is more stable; 3. slurry bleaching adopts hypochlorite (H) in this method, Peracetic acid (Pa), the flow process of acid treatment (A) carries out, and bleaching process is simple and direct to be suitable for, purpose is: reduce the pollutional load of bleaching effluent under the situation of guarantee bleached pulp brightness as much as possible, and reduce AOX generation and avirulence; 4. this method can adopt different bleaching process according to the dissolving pulp of different hardness slurry or different needs, makes to produce flexibly and diversity; Realize shortening the production time, reduce water consumption and energy consumption, reduce and pollute, reduce cost and environment amenable purpose thereby reach.
Embodiment
Adopt gained dissolving pulp of the present invention to be suitable for chemical fibre industry and produce viscose.Below in conjunction with embodiment the present invention is done a detailed description:
Embodiment 1
It is the cizu material that present embodiment adopts raw material.Raw material adopts bamboo cutter to cut off specification 2～4cm; Acceptable material adopts normal pressure to soak into 180 minutes oxalic acid 0.1%, tartaric acid 0.1%, citric acid 1% for 95 ℃; Conditions of cooking: caustic soda 20%, potassium hydroxide 2%, sulphidity 25%, EDTA four sodium 0.02%, AQ0.05%, green oxygen 0.05%, 170 ℃ of temperature, time 120min.The boiling pulping is cleaned the back screening.Good slurry concentrates after bleaching, and bleaching process is the bleaching of HPaA flow process, and H section condition is: hypochlorite 4% (effective chlorine meter), 45 ℃ of temperature, concentration 10%, time 90min; Pa section condition is: Peracetic acid 2%, NaOH 1% (Na
2The O meter), 85 ℃ of temperature, concentration 20%, time 60min; A section: hydrochloric acid 2%, time 60min, 30 ℃ of temperature, concentration 5%.Gained dissolving pulp whiteness 〉=80%ISO, alpha cellulose content 〉=90%, ash content≤0.2%, dynamic viscosity 6.50mPa.S, the dissolving pulp quality is good, can apply to viscose production.
Embodiment 2
It is raw material that present embodiment adopts red bamboo, and raw material adopts bamboo cutter to chip specification 2～4cm.Acceptable material prehydrolysis, oxalic acid 0.1%, tartaric acid 0.02%, citric acid 0.3%, liquor ratio 1: 6,170 ℃ of temperature, time 90min.Conditions of cooking is: 170 ℃ of temperature, time 120min, caustic soda 17.5%, potassium hydroxide 2%, sulphidity 25%, EDTA four sodium 0.02%, anthraquinone 0.02%, green oxygen 0.01%.Good slurry bleaching process is HPaA, and H section condition is: hypochlorite 5% (effective chlorine meter), 45 ℃ of temperature, concentration 10%, time 90min; Pa section condition is: Peracetic acid 1.5%, NaOH 1.5% (Na
2The O meter), 85 ℃ of temperature, concentration 20%, time 60min; A section: hydrochloric acid 2%, time 60min, 30 ℃ of temperature, concentration 5%.Gained dissolving pulp whiteness 〉=83%ISO, alpha cellulose content 〉=91%, ash content≤0.15%, dynamic viscosity 8.6mPa.S.
Embodiment 3
It is raw material that present embodiment adopts red bamboo, wherein prehydrolysis process mesoxalic acid 0.2%, tartaric acid 0.05%, the citric acid consumption is 0.1%, other is identical with embodiment 2 except that slurry bleaching, and conditions of cooking is: 170 ℃ of temperature, time 120min, caustic soda 19%, potassium hydroxide 2%, sulphidity 28%, EDTA four sodium 0.05%, anthraquinone 0.01%, green oxygen 0.01%.Good slurry bleaching process is HA, and H section condition is: hypochlorite 6% (effective chlorine meter), 45 ℃ of temperature, concentration 10%, time 150min; A section: hydrochloric acid 2%, time 60min, 30 ℃ of temperature, concentration 5%.Gained dissolving pulp whiteness 〉=77%ISO, alpha cellulose content 〉=92%, ash content≤0.18%, dynamic viscosity 9.7mPa.S, product are applicable to that production and processing becomes artificial fibre.
From embodiment 1, embodiment 2 and embodiment 3 as can be known, become the dissolving pulp superior performance, all can meet short rayon fiber Wesy bamboo dissolved pulp product requirement in the national textile industry standard; Compare other raw material or explained hereafter dissolving pulp, this method bamboo dissolved pulp pulping process energy efficient makes full use of existing resource, has more improved the dissolving pulp added value.
Claims (3)
1. utilize bamboo wood to produce the method for dissolving pulp, it is characterized in that may further comprise the steps:
(1) the rotten bamboo wood of all kinds of nothings adopts bamboo chipper to chip, the long 1～5cm of bamboo chip specification * wide 1～3cm, qualification rate 〉=95%;
(2) carry out organic acid prehydrolysis after the qualified bamboo tablet washing;
(3) will through the raw material of prehydrolysis with send into the kraft cooking slurrying that digesting apparatus carries out the agent of the compound alkali duplicate protection of black liquor after chemical liquid evenly mixes, require slurry KMnO
4Hardness is 1～20, whiteness 〉=15%ISO;
(4) adopt thickener to concentrate extraction rate of black liquor 〉=80% to boiling into the sulfate slurry;
(5) adopt dissociation apparatus after diluting, to discongest filtering stock, wash degree≤0.25g (Na through concentrated slurry
2O)/L;
(6) cleaning slurry adopts pulp screen to screen;
(7) the screening disposed slurry adopts hypochlorite (H), Peracetic acid (Pa), and the flow process of acid treatment (A) is bleached;
(8) through the bleaching slurry clean dehydrate the bleaching bamboo dissolved pulp.
2. organic acid pre-hydrolysis method as claimed in claim 1, it is characterized in that having used in the prehydrolysis process organic acid citric acid, the organic acid pre-hydrolysis method is divided into water-extraction method and the pre-cooking process of water, water logging foam method method condition is: oxalic acid 0～1%, tartaric acid 0～1%, citric acid 0～2%, liquor ratio 1: 1～1: 100,10～100 ℃ of water temperatures, soak time 1～100 hour; The pre-cooking process condition of water is: oxalic acid 0～1%, tartaric acid 0～1%, citric acid 0～2%, liquor ratio 1: 2～1: 100, temperature 〉=100 ℃, time 2～300min.
3. pulping process as claimed in claim 1 is characterized in that cooking liquor is the washing black liquid of slurry, adopts the compound alkali of potassium hydroxide and NaOH, green oxygen and the agent of anthraquinone duplicate protection, and each chemicals reaches and to over dry raw material consumption by mass percentage is:
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| CN2011101411962A CN102251421A (en) | 2011-05-27 | 2011-05-27 | Method for producing dissolving pulp from bamboo |
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| CN2011101411962A CN102251421A (en) | 2011-05-27 | 2011-05-27 | Method for producing dissolving pulp from bamboo |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828431A (en) * | 2012-08-20 | 2012-12-19 | 四川理工学院 | Prehydrolysis additive for dissolving pulp production and preparation method thereof |
| CN103774478A (en) * | 2014-02-07 | 2014-05-07 | 福建农林大学 | Method of removing hemicelluloses by intensifying bamboo pre-hydrolysis by use of oxalic acid |
| CN109482199A (en) * | 2018-12-05 | 2019-03-19 | 中国制浆造纸研究院有限公司 | A method of preextraction hemicellulose and its hydrolysis and saccharification efficiency are improved using biomass carbon based solid acid catalyst |
| CN117328286A (en) * | 2023-10-30 | 2024-01-02 | 华邦特西诺采新材料股份有限公司 | Bamboo pulp paper and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6254722B1 (en) * | 1996-03-27 | 2001-07-03 | North Carolina State University | Method for making dissolving pulp from paper products containing hardwood fibers |
| CN101158122A (en) * | 2007-11-15 | 2008-04-09 | 宜宾纸业股份有限公司 | Bamboo dissolved pulp manufacturing technique |
| CN101429733A (en) * | 2008-12-04 | 2009-05-13 | 余钢纲 | Bamboo wood dissolving pulp manufacturing process |
| CN101701431A (en) * | 2008-07-16 | 2010-05-05 | 中国制浆造纸研究院 | Method for producing bleached pulp for viscose fibers from bamboo |
-
2011
- 2011-05-27 CN CN2011101411962A patent/CN102251421A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6254722B1 (en) * | 1996-03-27 | 2001-07-03 | North Carolina State University | Method for making dissolving pulp from paper products containing hardwood fibers |
| CN101158122A (en) * | 2007-11-15 | 2008-04-09 | 宜宾纸业股份有限公司 | Bamboo dissolved pulp manufacturing technique |
| CN101701431A (en) * | 2008-07-16 | 2010-05-05 | 中国制浆造纸研究院 | Method for producing bleached pulp for viscose fibers from bamboo |
| CN101429733A (en) * | 2008-12-04 | 2009-05-13 | 余钢纲 | Bamboo wood dissolving pulp manufacturing process |
Non-Patent Citations (1)
| Title |
|---|
| 黄仁亮等: "木质纤维素甲酸预处理及其组分分离", 《过程工程学报》, vol. 08, no. 06, 31 December 2008 (2008-12-31), pages 1103 - 1107 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828431A (en) * | 2012-08-20 | 2012-12-19 | 四川理工学院 | Prehydrolysis additive for dissolving pulp production and preparation method thereof |
| CN102828431B (en) * | 2012-08-20 | 2014-12-10 | 四川理工学院 | Prehydrolysis additive for dissolving pulp production and preparation method thereof |
| CN103774478A (en) * | 2014-02-07 | 2014-05-07 | 福建农林大学 | Method of removing hemicelluloses by intensifying bamboo pre-hydrolysis by use of oxalic acid |
| CN103774478B (en) * | 2014-02-07 | 2016-01-06 | 福建农林大学 | The method of hemicellulose is removed in the prehydrolysis of oxalic acid strengthened bamboo material |
| CN109482199A (en) * | 2018-12-05 | 2019-03-19 | 中国制浆造纸研究院有限公司 | A method of preextraction hemicellulose and its hydrolysis and saccharification efficiency are improved using biomass carbon based solid acid catalyst |
| CN117328286A (en) * | 2023-10-30 | 2024-01-02 | 华邦特西诺采新材料股份有限公司 | Bamboo pulp paper and preparation method thereof |
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Address after: 100102, Beijing Wangjing science and Technology Park, Chaoyang District No. 4 Yang Lu, No. 302 light building, room 3 Applicant after: China National Pulp & Paper Research Institute Co-applicant after: Zhenya Co.,Ltd. Address before: 100061 Beijing city Dongcheng District guangqumenwai South Guan No. 7 Applicant before: China National Pulp & Paper Research Institute Co-applicant before: Zhenya Co.,Ltd. |
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Application publication date: 20111123 |