Dry-cut cotton fiber bio-enzyme pulping process

Abstract

The invention provides a dry-cut cotton fiber bio-enzyme pulping process. The process includes the following steps that dry-cut cotton fibers are pretreated with pectinase to obtain pulp; the pretreated pulp is subjected to cook bleaching through an alkaline hydrogen peroxide method. According to the dry-cut cotton fiber bio-enzyme pulping process, firstly, the cotton fibers are firstly pretreated with bio-enzymes to remove pectin and other impurities affecting following production, and then the pretreated pulp is subjected to cook bleaching through the alkaline hydrogen peroxide method. According to the dry-cut cotton fiber bio-enzyme pulping process, production can be completed under low-temperature and normal-pressure conditions, and the use amount of chemical medicine can be greatly reduced; meanwhile alkaline hydrogen peroxide bleaching operation is also carried out under the normal-pressure condition. The pulp prepared through the dry-cut cotton fiber bio-enzyme pulping process completely meets the production requirements of banknote paper pulping.

Description

technical field [0001] The invention relates to a dry-cut cotton fiber biological enzyme pulping process, which belongs to the technical field of papermaking, and more specifically, belongs to the technical field of pulping in the papermaking process. Background technique [0002] At present, cotton fiber pulping generally adopts chemical pulping, that is, by adding a large amount of chemicals and auxiliaries to chemically remove impurities in cotton fibers, and then achieve the purpose of pulping; at the same time, chemical methods and mechanical methods are also used in this field The pulping method combined with different methods can properly reduce the consumption of chemicals. [0003] The domestic cotton fiber pulping process mostly uses equipment such as steaming balls, steaming pots, and horizontal tube continuous digesters for steaming and bleaching, while the steaming and bleaching process usually uses alkaline method or alkaline hydrogen peroxide method, but the s...

AI Technical Summary

Problems solved by technology

[0003] The domestic cotton fiber pulping process mostly uses equipment such as steaming balls, steaming pots, and horizontal tube continuous digesters for steaming and bleaching, and the steaming and bleaching process usually uses alkaline method or alkaline hydrogen peroxide method, but the steaming and bleaching temperature is relatively high. The pressure is too high, the amount of chemicals is large, and the fibers will be degraded to a large extent. At the same time, there are safety hazards in the use of pressure vessels.

[0004] Cotton pulp is generally produced by normal pressure and low temperature steaming and bleaching process in foreign countries. This process adopts tower steaming and bleaching system, which has low energy consumption and the physical properties of pulp will be improved. However, this process cannot effectively remove impurities in raw materials. Suitable for raw materials with less impurity

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