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Bamboo dissolved pulp manufacturing technique

A manufacturing process and technology for dissolving pulp, applied in papermaking, papermaking machines, pulp bleaching, etc., can solve the problems of enterprise production efficiency, economic benefit constraints, low output rate of cooking equipment, long production technical process, etc., and achieve or stabilize σ - Effect of cellulose content, increasing σ-cellulose content, yield increasing

Inactive Publication Date: 2008-04-09
宜宾纸业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the cotton output fluctuates due to the influence of climate and soil quality, and the quality varies greatly, some pulp production enterprises in my country have carried out bamboo material production in order to meet the raw material demand of textile viscose rayon enterprises, and to use the natural antibacterial and antibacterial functions of bamboo. A breakthrough in the production of bamboo pulp, but its production process is still the traditional acid hydrolysis or steam hydrolysis or water hydrolysis, and then cooking, bleaching, and the bleaching process is still the traditional hypochlorite or Chlorine dioxide plus hydrogen peroxide bleaching production technology, the traditional production technology process is long, the output rate of cooking equipment is low, at the same time the harvest rate of bamboo is low, the production cost of pulp is high, and the production efficiency and economic benefit of the enterprise are restricted; traditional craft bamboo harvesting The low efficiency directly leads to the waste of resources, which has a certain impact on the realization of enterprise production efficiency and economic benefit maximization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of manufacturing process of bamboo dissolving pulp, described manufacturing process comprises material cutting, screening deashing, washing material, kraft cooking, slurry separation, washing purification, chlorination, alkali treatment, acetic acid bleaching+H 2 o 2 Oxidative organic bleaching, acid complexing treatment, papermaking, the specific steps are:

[0027] A. Raw material cutting: cutting the bamboo;

[0028] B. Screening and ash removal: Screen the raw materials after cutting to remove ash and chips;

[0029] C, washing materials: washing the raw materials obtained in step B to remove dust;

[0030] D. Cooking, heating, deflation:

[0031] Cooking: put the bamboo strips obtained in step C into water containing sulfate, and simultaneously add hyperbranched active green oxygen to the water containing sulfate by 0.1% of the absolute dry weight of bamboo strips to form a cooking solution; bamboo strips and solution The weight ratio is 1:3; the amount ...

Embodiment 2

[0043]A kind of manufacturing process of bamboo dissolving pulp, described manufacturing process comprises material cutting, screening deashing, washing material, kraft cooking, slurry separation, washing purification, chlorination, alkali treatment, acetic acid bleaching+H 2 o 2 Oxidative organic bleaching, acid complexing treatment, papermaking, the specific steps are:

[0044] A. Raw material cutting: cutting the bamboo;

[0045] B. Screening and ash removal: Screen the raw materials after cutting to remove ash and chips;

[0046] C, washing materials: washing the raw materials obtained in step B to remove dust;

[0047] D. Cooking, heating, deflation:

[0048] Cooking: put the bamboo strips obtained in step C into water containing sulfate, and simultaneously add hyperbranched active green oxygen to the water containing sulfate by 8.0% of the absolute dry weight of bamboo strips to form a cooking solution; bamboo strips and solution The weight ratio is 1:5; the amount o...

Embodiment 3

[0060] A kind of manufacturing process of bamboo dissolving pulp, described manufacturing process comprises material cutting, screening deashing, washing material, kraft cooking, slurry separation, washing purification, chlorination, alkali treatment, acetic acid bleaching+H 2 o 2 Oxidative organic bleaching, acid complexing treatment, papermaking, the specific steps are:

[0061] A. Raw material cutting: cutting the bamboo;

[0062] B. Screening and ash removal: Screen the raw materials after cutting to remove ash and chips;

[0063] C, washing materials: washing the raw materials obtained in step B to remove dust;

[0064] D. Cooking, heating, deflation:

[0065] Cooking: put the bamboo strips obtained in step C into water containing sulfate, and simultaneously add hyperbranched active green oxygen to the water containing sulfate by 4% of the absolute dry weight of bamboo strips to form a cooking solution; bamboo strips and solution The weight ratio is 1:4; the amount of...

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Abstract

The invention discloses a manufacturing technique of bamboo dissolving pulp. The manufacturing technique sequentially comprises cropping, screening and removing ashes, washing under standard temperature, sulfate cooking, serosity separation, scrubbing purification, chlorination treatment, alkali treatment, acetic acid bleaching +H2O2 oxidation organic bleaching, acid complex treatment and runnability. The invention effectively shortens the production process and enhances production efficiency of producing bamboo dissolving pulp by bamboo. The dissolving pulp can be used in rayon dissolving pulp, nitrocellulose dissolving pulp, cellulose acetate dissolving pulp and cellulose dissolving pulp. At the same time, the invention enhances the harvesting rate of making bamboo dissolving pulp by bamboo.

Description

technical field [0001] The invention relates to a manufacturing process of bamboo dissolving pulp used for producing viscose dissolving pulp, nitrocellulose dissolving pulp, acetate cellulose dissolving pulp and cellulose ether dissolving pulp. Background technique [0002] Due to the rapid development of society and the continuous improvement of people's living standards, the consumption growth of social resources has been far greater than the natural growth rate of resources, which cannot meet the needs of sustainable development of society, especially the current shortage of resources in the textile industry. In the past, the textile industry mainly used cotton, cotton linters, and hemp as the main raw materials for production. Today, with the rapid progress and development of society, people's quality of life standards have been greatly improved, and the quality and quantity of textile products are constantly increasing. , the production of the textile industry is consta...

Claims

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Application Information

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IPC IPC(8): D21B1/04D21C1/00D21C7/00D21C3/02D21C9/16D21F13/00
Inventor 罗云王晓华易从梁好李云川黄正文
Owner 宜宾纸业股份有限公司
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