Method for pulping through micro-biological degradation of plant straws

Abstract

The invention discloses a method for pulping through micro-biological degradation of plant straws. The method comprises the steps of cutting and removing a root part and a tip part of a bamboo, and remaining 2 to 3 meters of a middle section for standby use; peeling and slicing the bamboo to obtain bamboo slices; cleaning; squeezing the bamboo slices into bamboo residues; feeding the bamboo residues into a degradation pond, adding a polysaccharide compound myxomycete cluster with the mass accounting for 25 percent to 40 percent of dry weight of the bamboo residues into the degradation pond, and degrading at 10 to 30 DEG C for 48 to 120h until thoroughly dissolving the bamboo residues; after degrading, discharging degradation liquid from the degradation pond, discharging into a stainless steel heat-insulation water pond through a 100-mesh stainless steel filter mesh, and reserving for standby use; concentrating the degradation liquid to obtain a concentrated solution with the dryness fraction being 80 percent to 90 percent; pumping the concentrated solution with the dryness fraction being 80 percent to 90 percent into a stainless steel centrifugal spray dryer, drying, and then packaging; rubbing and splitting bamboo pulp discharged from the degradation pond, high consistency grinding, and squeezing water for drying. The method provided by the invention belongs to an environment-friendly technology, adopts micro-biological degradation of the plant straws to replace chemical pulping in the prior art, and is energy-saving and environmentally friendly without pollution.

Description

technical field [0001] The invention relates to the field of biological pulping, in particular to a method for pulping by microbial degradation of plant stalks. Background technique [0002] China is a big paper-making country. In 2015, the total output of paper reached 65 million tons, the demand was 80 million tons, and the demand gap exceeded 15 million tons. China is the main producer of non-wood pulp in the world. Non-wood pulp accounts for 85% of virgin pulp and more than 50% of total pulp. [0003] Bamboo is a renewable resource, inexhaustible, short growth cycle, high yield, perennial. my country is rich in bamboo resources, ranking first in the Asia-Pacific region in terms of planting area and species. Bamboo resources are particularly abundant in the south of the Yangtze River in my country. [0004] The paper industry is a major source of pollution, and pulping is the top priority of pollution. The pulping section is the first process in the papermaking indust...

AI Technical Summary

Problems solved by technology

The pulping section is the first process in the papermaking industry. At present, chemical pulping or chemical mechanical pulping methods are basically used in the world, mainly alkali method, ammonium sulfite method, etc. These traditional pulping technologies are used in the production During the pulp cooking process, a large amount of black liquor is discharged, and a large amount of waste liquid is generated in the production process, which seriously pollutes the environment

With the increasingly stringent environmental protection requirements, due to the high toxicity and strong carcinogenic substances contained in the traditional pulp and paper industry wastewater, it is necessary to invest heavily in pollution control, which reduces the market competitiveness of enterprise products