Method for preparing paper pulp by fiber residue generated during microorganism product fermentation

Abstract

The invention discloses a technique method for preparing paper pulp from fiber residua of fermentation products preparation from crop castoff by microorganism fermenting, which makes production of the paper pulp more economic than production direct from crop castoff by comprehensively utilizing microorganism fermentation and mechanical working. The method includes steps: crushing, acid (including organic acid and inorganic acid) or basic hydrolyzing, and enzymatic hydrolyzing crop castoff to obtain fiber residua, microorganism fermenting, distilling, solid-liquid separating, pulp grinding, pulp screening, and pulp extruding. The crop castoff includes processed castoff of corn straw, wheat straw hood, haulm, reed, medulla junci, bagasse, bamboo and forest. Advantages of the invention are: producing process has no pollution, less water is used, cost of the method is 35% of cost of chemical pulp preparation, and the method can be used to prepare food packaging paper and medicine packaging paper.

Description

technical field [0001] The invention belongs to the field of biomanufacturing, and relates to a pulp manufacturing process, in particular to a production technology combining microbial fermentation products and pulp processes, and more specifically, to fibers produced from agricultural fiber wastes through microbial fermentation to produce various fermented products The method by which the residue is used to produce pulp. Background technique [0002] Crop fiber waste is an extremely rich renewable resource, generally containing 40% to 50% of cellulose, 25% to 35% of hemicellulose, 15% to 20% of lignin, and a small amount of soluble sugar, Proteins, fats, and other inorganic mineral components have been attracting attention for utilizing such resources as industrial raw materials. [0003] With the gradual depletion of the earth's oil resources and the increase of the greenhouse effect of the atmosphere, the use of ethanol to replace part of oil for transportation fuel has ...

AI Technical Summary

Problems solved by technology

[0007] Regarding the technical innovation of papermaking industry at home and abroad, a biotechnology papermaking technology has been developed. For example, the application number is 01107892.8, the publication number is CN1310258A, and the invention name is "Technology for preparing chemical mechanical straw pulp by biological pretreatment"; application number 021125521.7, Publication number CN1267605C, the title of the invention is "Biological Fermentation Pulp Process", which is characterized by the fact that microorganisms are only used as a biological fermentation pretreatment method similar to chemical treatment, not only does not produce fermented products, but also increases processing costs and produces a large amount of high COD, BOD organic wastewater