Environmental-protection bio-enzyme explosion pulping method

Abstract

The invention discloses an environmental-protection bio-enzyme explosion pulping method. The method comprises the following steps: cutting a grass raw material into segments, removing dust, impregnating with water, and adding catalase accounting for 20-40 wt% of the raw material; after 40-60 minutes, conveying the mixture into an explosion device, and meanwhile, adding oxydol with the concentration of 50-60% into the explosion device; and exploding to obtain the pulp. The pulping method does not generate black liquor or pollute the environment. The pulping method requires a short production cycle and does not need cooking, thereby reducing the energy consumption. The pulping yield is high and can reach above 80%. The produced pulp has the advantages of favorable physical properties and bleaching properties, and can be used for producing high-whiteness high-strength high-grade paper sheets.

Description

technical field [0001] The invention relates to a pulping method, in particular to an environmentally friendly pulping method by biological enzyme explosion. Background technique [0002] Grass raw materials, such as wheat straw, are the main raw materials of my country's paper industry, accounting for more than 50% of the raw materials of my country's paper industry, which are mainly used to produce chemical pulp. However, the traditional chemical pulping process, such as caustic soda method, sulfate method, etc., is used to produce straw chemical pulp, and a large amount of black liquor produced in the production process has high viscosity, low organic content, high silicon content, and low calorific value. characteristics, making it difficult to effectively recycle, causing serious environmental pollution problems. To completely solve the problem of papermaking wastewater pollution, it must be prevented from the source, and biopulping technology is considered to be one o...

AI Technical Summary

Problems solved by technology

The existing biopulping technology uses microorganisms to directly process raw materials. The main disadvantages are: the biological treatment cycle is long, and generally takes a few days; before the microbial treatment, the raw materials should generally be sterilized, which increases the production cost. It is possible to reduce the quality of raw materials; the biological treatment process is difficult to effectively control, and there are often problems such as poor quality uniformity of raw materials after treatment and serious carbohydrate degradation, resulting in reduced pulping yield; compared with chemical pulp, the quality of pulp has lower physical properties and The bleaching performance is poor, and it cannot be used to produce high-brightness, high-strength paper. It can only be used to produce low-grade products, which cannot meet the needs of high-grade products for pulp quality.