Material preparation process suitable for preparing dissolving pulp by modifying natural color unblenched needlebush and broadleaf wood composite paper pulp

A technology for compounding pulp and softwood wood is applied in the field of viscose chemical fiber raw material-pulp preparation, which can solve the problems of low quality and high cost of dissolving pulp in semi-finished products and final products, and achieve easy ash control, low cost, and save alkali recovery. The effect of the device

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 raw material preparation process of unbleached unbleached wood pulp into dissolving pulp in the above-mentioned prior art. The quality of semi-finished and final finished dissolving pulp is not high and the cost is high. The problem of unbleached composite pulp, providing a raw material preparation process for preparing dissolving pulp by modifying natural unbleached softwood and hardwood composite pulp

Method used

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  • Material preparation process suitable for preparing dissolving pulp by modifying natural color unblenched needlebush and broadleaf wood composite paper pulp

Examples

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Effect test

Embodiment 1

[0058] A raw material preparation process for preparing dissolving pulp by modifying unbleached unbleached softwood and hardwood composite pulp, comprising the following process steps:

[0059] A. Raw material preparation

[0060] According to the ratio of the total weight of natural unbleached softwood pulp and natural unbleached hardwood pulp to the volume of the digester: 100kg: 1m 3 Raw materials are prepared by selecting natural unbleached softwood pulp and natural unbleached hardwood pulp;

[0061] B. Dispersion and pulping

[0062] The unbleached unbleached softwood pulp and the unbleached hardwood pulp are dispersed and processed into pulp boards, and then the unbleached unbleached softwood pulp board and the unbleached hardwood pulp board are mixed with water for pulping to obtain unbleached unbleached wood pulp. The mixture of coniferous wood pulp, natural unbleached hardwood pulp and water is the pulp porridge, and then undergo the next step of pressing and dehydr...

Embodiment 2

[0069] A raw material preparation process for preparing dissolving pulp by modifying unbleached unbleached softwood and hardwood composite pulp, comprising the following process steps:

[0070] A. Raw material preparation

[0071] According to the ratio of the total weight of natural unbleached softwood pulp and natural unbleached hardwood pulp to the volume of the digester: 250kg: 1m 3 Raw materials are prepared by selecting natural unbleached softwood pulp and natural unbleached hardwood pulp;

[0072] B. Dispersion and pulping

[0073] The unbleached unbleached softwood pulp and the unbleached hardwood pulp are dispersed and processed into pulp boards, and then the unbleached unbleached softwood pulp board and the unbleached hardwood pulp board are mixed with water for pulping to obtain unbleached unbleached wood pulp. The mixture of coniferous wood pulp, natural unbleached hardwood pulp and water is the pulp porridge, and then undergo the next step of pressing and dehydr...

Embodiment 3

[0080] A raw material preparation process for preparing dissolving pulp by modifying unbleached unbleached softwood and hardwood composite pulp, comprising the following process steps:

[0081] A. Raw material preparation

[0082] According to the ratio of the total weight of natural unbleached softwood pulp and natural unbleached hardwood pulp to the volume of the digester: 175kg: 1m 3 Raw materials are prepared by selecting natural unbleached softwood pulp and natural unbleached hardwood pulp;

[0083] B. Dispersion and pulping

[0084] The unbleached unbleached softwood pulp and the unbleached hardwood pulp are dispersed and processed into pulp boards, and then the unbleached unbleached softwood pulp board and the unbleached hardwood pulp board are mixed with water for pulping to obtain unbleached unbleached wood pulp. The mixture of coniferous wood pulp, natural unbleached hardwood pulp and water is the pulp porridge, and then undergo the next step of pressing and dehydr...

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Abstract

The invention discloses a material preparation process suitable for preparing dissolving pulp by modifying natural color unblenched needlebush and broadleaf wood composite paper pulp. The process comprises the processes of preparing raw materials, dispersing, slicing, impregnating and the like. Aiming at the natural color unblenched needlebush and broadleaf wood composite paper pulp raw materials, the special process steps and process control parameters thereof are adopted; the aims of improving the quality of the finished product, saving energy and reducing emission can be fulfilled; the content of alpha cellulose, the yield and the whiteness of the finished product are improved; the ash content is reduced; the material preparation process is beneficial to the cost control of chemical industrial liquid medicine; a subsequent cooking and heating curve is stable; the concentration is uniformly reduced; and the prepared semi-finished product can be suitable for various cooking modes and has wide application range.

Description

technical field [0001] The invention relates to a material preparation process for preparing dissolving pulp, more specifically, the invention relates to a material preparation process suitable for preparing dissolving pulp by modifying unbleached unbleached coniferous wood and hardwood composite pulp, which belongs to viscose chemical fiber raw materials - 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'...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/34D21H11/20D21C1/06
Inventor 薛勤徐发祥于渭东刘爱兵谢鹏竭发全陈昌明
Owner YIBIN GRACE GROUP CO LTD
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