Material preparation process for preparing dissolving pulp by modifying bleached bamboo-wood composite pulp

A bamboo-wood composite and bamboo pulp technology is applied in the post-treatment modification of cellulose pulp, raw material separation, pre-treatment with alkaline compounds, etc., which can solve the problems of discomfort, low quality of dissolving pulp and high cost, and achieve cost reduction. , The material preparation process is easy and the cost is low

Inactive Publication Date: 2012-09-19
YIBIN GRACE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The present invention aims to solve the problems in the above-mentioned prior art that it is not suitable for the raw material preparation process of bleaching bamboo and wood composite pulp modified into dissolving pulp, and the quality of the semi-finished and final finished dissolving pulp is not high, the cost is high, and it is only applicable to a few cooking methods. Provide a material preparation process for preparing dissolving pulp by modifying bleached bamboo and wood composite pulp

Method used

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  • Material preparation process for preparing dissolving pulp by modifying bleached bamboo-wood composite pulp

Examples

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Effect test

Embodiment 1

[0053] A material preparation process for preparing dissolving pulp by modifying bleached bamboo-wood composite pulp, comprising the following process steps:

[0054] A. Raw material preparation

[0055] According to the ratio of the total weight of bleached bamboo pulp and bleached wood pulp to the volume of the digester: 100kg: 1m 3 Prepare raw materials, select bleached bamboo pulp and bleached wood pulp;

[0056] B. Scatter and slice

[0057] Dispersing bleached bamboo pulp and bleached wood pulp into pulp boards and cutting bleached bamboo pulp boards and bleached wood pulp boards into small pieces;

[0058] C. Dipping

[0059] The dispersed and sliced ​​bleached bamboo pulp and bleached wood pulp are mixed with sodium hydroxide solution to obtain a mixture of bleached bamboo pulp, bleached wood pulp and sodium hydroxide solution, that is, pulp porridge, and the control liquid ratio is 1:3. The solid weight of sodium hydroxide in the sodium hydroxide solution is 17% o...

Embodiment 2

[0062] A material preparation process for preparing dissolving pulp by modifying bleached bamboo-wood composite pulp, comprising the following process steps:

[0063] A. Raw material preparation

[0064] According to the ratio of the total weight of bleached bamboo pulp and bleached wood pulp to the volume of the digester is 250kg: 1m 3 Prepare raw materials, select bleached bamboo pulp and bleached wood pulp;

[0065] B. Scatter and slice

[0066] Dispersing bleached bamboo pulp and bleached wood pulp into pulp boards and cutting bleached bamboo pulp boards and bleached wood pulp boards into small pieces;

[0067] C. Dipping

[0068] The bleached bamboo pulp and bleached wood pulp dispersed and sliced ​​are mixed with sodium hydroxide solution to obtain a mixture of bleached bamboo pulp, bleached wood pulp and sodium hydroxide solution, namely pulp porridge. The control liquid ratio is 1:4, The solid weight of sodium hydroxide in the sodium hydroxide solution is 22% of th...

Embodiment 3

[0071] A material preparation process for preparing dissolving pulp by modifying bleached bamboo-wood composite pulp, comprising the following process steps:

[0072] A. Raw material preparation

[0073] According to the ratio of the total weight of bleached bamboo pulp and bleached wood pulp to the volume of the digester is 175kg: 1m 3 Prepare raw materials, select bleached bamboo pulp and bleached wood pulp;

[0074] B. Scatter and slice

[0075] Dispersing bleached bamboo pulp and bleached wood pulp into pulp boards and cutting bleached bamboo pulp boards and bleached wood pulp boards into small pieces;

[0076] C. Dipping

[0077] Mix bleached bamboo pulp and bleached wood pulp with sodium hydroxide solution after dispersing and slicing to obtain a mixture of bleached bamboo pulp, bleached wood pulp and sodium hydroxide solution, that is, pulp porridge. The control liquid ratio is 1:3.5, The solid weight of sodium hydroxide in the sodium hydroxide solution is 19.5% of ...

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Abstract

The invention discloses a material preparation process for preparing dissolving pulp by modifying bleached bamboo-wood composite pulp. The process comprises the steps of preparing raw materials, dispersing, splicing, soaking and the like, specific process steps and process control parameters are adopted for composite material of the bleached wood pulp and the bleached bamboo pulp, so that the quality of a final product is improved, the energy is saved, the emission is reduced, the content, the yield and the whiteness of alpha cellulose in the finished product are improved, the ash content of the alpha cellulose is reduced, and a cost control of chemical liquid medicine is facilitated, a subsequent cooking heating curve is stable, degree of polymerization is uniformly decreased, the obtained semi-finished product is suitable for all kinds of cooking manners, and the application range is wide.

Description

technical field [0001] The invention relates to a material preparation process for preparing dissolving pulp, more specifically, the present invention relates to a material preparation process suitable for preparing dissolving pulp by modifying bleached bamboo and wood composite pulp, which belongs to viscose chemical fiber raw material-pulp preparation technology field. Background technique [0002] With the development of my country's viscose fiber industry, domestic enterprises mostly use cotton linters to prepare cotton pulp as raw materials for viscose fiber production. Cotton linters have the advantages of high cellulose content, long fibers, and good strength, and can be used to produce a variety of products. However, the resources of raw cotton linters are increasingly scarce due to the constraints of planting area and growth cycle. Prominent, long cycle and its impact on ecological balance have seriously restricted the development of my country's viscose fiber indus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/04D21C1/06D21H11/20
Inventor 薛勤于渭东徐发祥刘爱兵谢鹏竭发全陈昌明
Owner YIBIN GRACE GROUP CO LTD
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