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Material preparation process suitable for preparing dissolving pulp by modifying bleached bamboo paper pulp

A technology of bamboo pulp and dissolving pulp, which is applied in post-treatment modification of cellulose pulp, pretreatment with alkaline compounds, separation of raw materials, etc., can solve the problems of low quality and high cost of dissolving pulp, and achieve easy control of ash content and low cost Low, good deodorant effect

Inactive Publication Date: 2015-07-01
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 the raw material preparation process that is not suitable for bleaching bamboo pulp to be modified into dissolving pulp, the semi-finished product and the final product dissolving pulp are of low quality and high cost, and are only applicable to a few cooking methods. A material preparation process for preparing dissolving pulp by modifying bleached bamboo pulp

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  • Material preparation process suitable for preparing dissolving pulp by modifying bleached bamboo paper pulp

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Experimental program
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Effect test

Embodiment 1

[0051] A material preparation process suitable for preparing dissolving pulp by modifying bleached bamboo pulp, comprising the following process steps:

[0052] A. Raw material preparation

[0053] According to the ratio of the weight of bleached bamboo pulp to the volume of the digester is 100kg: 1m 3 Prepare materials, select bleached bamboo pulp;

[0054] B. Scatter and slice

[0055] Dispersing the bleached bamboo pulp into pulp boards and then cutting the bleached bamboo pulp boards into small pieces;

[0056] C. Dipping

[0057] Mix the dispersed and sliced ​​bleached bamboo pulp with sodium hydroxide solution to obtain a mixture of bleached bamboo pulp and sodium hydroxide solution, namely pulp porridge. The control liquid ratio is 1:3, and the hydroxide in the sodium hydroxide solution Sodium solids weight is 17% of fiber dry gross weight in the bleached bamboo pulp;

[0058] D. After the impregnation is completed, enter the next cooking process.

Embodiment 2

[0060] A material preparation process suitable for preparing dissolving pulp by modifying bleached bamboo pulp, comprising the following process steps:

[0061] A. Raw material preparation

[0062] According to the ratio of the weight of bleached bamboo pulp to the volume of the digester is 250kg: 1m 3 Prepare materials, select bleached bamboo pulp;

[0063] B. Scatter and slice

[0064] Dispersing the bleached bamboo pulp into pulp boards and then cutting the bleached bamboo pulp boards into small pieces;

[0065] C. Dipping

[0066] Mix the dispersed and sliced ​​bleached bamboo pulp with sodium hydroxide solution to obtain a mixture of bleached bamboo pulp and sodium hydroxide solution, that is, pulp porridge. The control liquid ratio is 1:4, and the hydroxide in the sodium hydroxide solution Sodium solids weight is 22% of fiber dry gross weight in the bleached bamboo pulp;

[0067] D. After the impregnation is completed, enter the next cooking process.

Embodiment 3

[0069] A material preparation process suitable for preparing dissolving pulp by modifying bleached bamboo pulp, comprising the following process steps:

[0070] A. Raw material preparation

[0071] According to the ratio of the weight of bleached bamboo pulp to the volume of the digester is 175kg: 1m 3 Prepare materials, select bleached bamboo pulp;

[0072] B. Scatter and slice

[0073] Dispersing the bleached bamboo pulp into pulp boards and then cutting the bleached bamboo pulp boards into small pieces;

[0074] C. Dipping

[0075] Mix the dispersed and sliced ​​bleached bamboo pulp with sodium hydroxide solution to obtain a mixture of bleached bamboo pulp and sodium hydroxide solution, namely pulp porridge. The control liquid ratio is 1:3.5, and the hydroxide in the sodium hydroxide solution Sodium solids weight is 19.5% of fiber dry gross weight in the bleached bamboo pulp;

[0076] D. After the impregnation is completed, enter the next cooking process.

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Abstract

The invention discloses a material preparation process suitable for preparing dissolving pulp by modifying bleached bamboo paper pulp. The process comprises the processes of preparing raw materials, dispersing, slicing, impregnating and the like. Aiming at the blenched bamboo paper pulp, 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 bleached bamboo pulp, and belongs to the technical field of viscose chemical fiber raw material-pulp preparation. 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 industry. For this reason, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21B1/04D21C1/06D21H11/20
Inventor 薛勤徐发祥于渭东刘爱兵李文贵竭发全邬龙陈昌明
Owner YIBIN GRACE GROUP CO LTD
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