Biological pulping method adopting crop straw and papermaking pulp

A technology for crop straw and biological pulping, which is used in papermaking, textiles and papermaking, and cellulose treatment with microorganisms/enzymes to reduce energy consumption, reduce emissions, and improve pulp yield and whiteness.

Active Publication Date: 2018-08-24
福建祥业环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the objectives of the present invention is to provide a method for biological pulping of crop straws, so as to provide a new method of straw pulping, and alleviate the technical problems of the huge pressure on the environment caused by traditional pulping methods

Method used

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  • Biological pulping method adopting crop straw and papermaking pulp
  • Biological pulping method adopting crop straw and papermaking pulp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] This embodiment provides a method for biological pulping of crop straws, comprising the following steps:

[0088] (a 1 ) cutting crop straws into sections with a length of 30-40 mm, then soaking the cut crop straws in water for 2 hours, and then squeezing the water to obtain crop straw hydrolyzed material with a moisture content of 2-30%;

[0089] (a 2 ) subjecting the crop straw hydrolyzed material to a bioenzyme treatment at a temperature of 50° C. for 3 hours to obtain a coarse crop straw material;

[0090] A compound biological enzyme preparation is used for one-time biological enzyme treatment, and the treatment temperature is 50°C to obtain a coarse pulp of crop straw;

[0091] (b) Grinding and separating the coarse diameter of the crop straw to obtain the crop straw

[0092] (c) subjecting the crop straw grinding slurry to a secondary treatment with a microbial agent at 50° C., and the secondary treatment time is 20 minutes, to obtain a fine slurry of crop str...

Embodiment 2

[0097] This example provides a biopulping method for crop straws. The difference between this example and Example 1 is that in the compound biological enzyme preparation, lignin peroxidase, xylanase, laccase, pectin Enzymes and beating enzymes are 3:2:2:2:2.

Embodiment 3

[0099]This example provides a biopulping method for crop straws. The difference between this example and Example 1 is that in the compound biological enzyme preparation, lignin peroxidase, xylanase, laccase, pectin Enzymes and beating enzymes are 2:1:1:1:1.

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Abstract

The invention provides a biological pulping method adopting crop straw and papermaking pulp and belongs to the technical field of pulping. The biological pulping method comprises crop straw cutting, primary treatment with bio-enzyme, grinding, secondary treatment with a microbial agent and bleaching. During primary treatment of with the bio-enzyme, an adopted complex bio-enzyme preparation comprises lignin peroxidase, xylanase, laccase, pectinase and pulping enzyme in the mass ratio being (2-4):(1-2):(1-2):(1-2):(1-2), and the technical problem that traditional pulping methods exert enormous pressure on the environment is relieved. By means of the biological pulping method adopting crop straw, emission of wastewater and waste gas is reduced, energy consumption is reduced, the pulp yield and the whiteness are increased, the crop straw can be changed into wealth, and the method has great significance in energy conservation, emission reduction and low-carbon economy.

Description

technical field [0001] The invention relates to the technical field of pulping, in particular to a biological pulping method of crop straws and papermaking pulp. Background technique [0002] my country is very rich in crop straw resources, with an annual production of more than 570 million tons. According to relevant data, my country wastes more than 250 million tons of straw every year. Therefore, it will be of great significance to turn these straw resources into treasures for pulp production, replace traditional wood papermaking, and reduce papermaking costs. [0003] In addition, the traditional papermaking process is a high-temperature, high-alkali, high-pressure cooking method, which is a high-pollution industry. If the wastewater and waste gas generated in the pulping process are not effectively and timely resolved, it will bring huge environmental disasters. [0004] Therefore, developing a clean pulping method using crop stalks as a raw material has become a techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00
CPCD21C5/005
Inventor 陈丽春
Owner 福建祥业环保科技股份有限公司
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