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Preparation method for high-quality paper pulp

A kind of pulp and high-quality technology, applied in the direction of non-woody plant/crop pulp, paper, papermaking, etc., can solve the problems of easy breakage and insufficient paper toughness, and achieve the effect of good paper toughness, increased strength, and cheap raw materials

Inactive Publication Date: 2016-10-12
SUZHOU SICHUANGYUANBO ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually papermaking additives do not contain fibers, but the produced paper is not tough enough, the paper is brittle and easy to break

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The reeds are prepared by wet and dry method. The reeds are evenly cut off, and the light dust is removed by the winnowing machine, and then fine impurities such as silt and reed pith are screened out by the round sieve, and finally the reed leaves and reed film are removed by the dust collector, and the length of 20 -40mm, reed pieces with a pass rate of more than 85% are washed with water to further remove impurities, and the dryness of the reed after dehydration is not less than 35%.

[0018] Pre-hydrolysis: carried out in a cooking pot, water is used as the extraction solvent for hemicellulose. The process conditions are as follows: for clean dry reed raw materials, the solid-to-liquid ratio is 1:3, the temperature is raised to 150°C, and the temperature is kept at this temperature for 50 minutes. The concentration of pentose sugar in the liquid is less than or equal to 40%; the liquid-solid is separated and washed, the filtrate is collected to obtain an extract, an...

Embodiment 2

[0023] The reeds are prepared by wet and dry method. The reeds are evenly cut off, and the light dust is removed by the winnowing machine, and then fine impurities such as silt and reed pith are screened out by the round sieve, and finally the reed leaves and reed film are removed by the dust collector, and the length of 20 -40mm, reed pieces with a pass rate of more than 85% are washed with water to further remove impurities, and the dryness of the reed after dehydration is not less than 35%.

[0024] Pre-hydrolysis: carried out in a cooking pot, water is used as the extraction solvent for hemicellulose. The process conditions are as follows: for clean dry reed raw materials, the solid-to-liquid ratio is 1:7, the temperature is raised to 190°C, and the temperature is kept at this temperature for 200 minutes. The concentration of pentose sugar in the liquid is less than or equal to 40%; the liquid-solid is separated and washed, the filtrate is collected to obtain an extract, a...

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PUM

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Abstract

The invention discloses a preparation method for high-quality paper pulp. According to the method, raw materials for the paper pulp are extracted from reed and are cheap; the raw materials of the reed paper pulp undergo reaction and bonding with groups of a cross-linking agent, so the cross-linking agent functions as a bridge between starch and starch and between starch and fiber and allows connections to be formed between starch and starch, between starch and fiber and between fiber and fiber, thereby forming a network structure; and thus, the strength of the paper pulp is greatly improved.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a method for preparing high-quality pulp. Background technique [0002] my country's timber resources are very scarce, and the bottleneck of papermaking raw materials is prominent. Reed is an important non-wood papermaking raw material with high cost performance. Therefore, the scientific and rational use of non-timber raw materials such as reeds can solve the problem of insufficient raw materials for papermaking in my country. [0003] The yield of pulp raw materials (the absolute dry amount of pulp that can be prepared per ton of absolute dry wood) is high, and the pulping waste liquid is less polluted and easy to handle, which meets the development needs of green papermaking. However, due to the poor strength of pulp raw materials, the quality of paper is reduced, thereby limiting its large-scale use in papermaking. The existing technology is to increase the strength of...

Claims

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Application Information

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IPC IPC(8): D21H11/12D21C3/20D21H17/28
CPCD21H11/12D21C3/20D21H17/28
Inventor 不公告发明人
Owner SUZHOU SICHUANGYUANBO ELECTRONICS TECH CO LTD