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Pulping method applying biological enzyme

A biological enzyme and pulp blending technology, applied in the field of papermaking, can solve the problems of limited enzyme activity sites, low physical properties of paper, and high energy consumption, and achieve the effects of increasing permeability, facilitating fiber crushing, and reducing cohesion.

Inactive Publication Date: 2018-04-06
福建希源纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, in view of the above content, the present invention provides a beating method using biological enzymes to solve the problems of high energy consumption, high production cost, low physical properties of the paper produced, limited enzyme activity sites, and low enzyme activity in the prior art beating method. Worse, less stable defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A beating method using biological enzymes, comprising the following processing steps:

[0019] (1) Pulp preparation: softwood pulp and broadleaf pulp are mixed in a weight ratio of 6:4 to obtain mixed pulp;

[0020] (2) prepare beating biological enzymes: adopt modified biological enzymes, the modified biological enzymes are made up of the following raw materials in parts by weight: 40 parts of cellulase, 40 parts of hemicellulase, 10 parts of laccase, 50 parts of amino acid, 40 parts of L-phenylalanine methyl ester hydrochloride, 70 parts of 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride, 10 parts of activated carbon; The preparation method of the modified biological enzyme is: mix laccase with 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride and L-phenylalanine methyl ester hydrochloride at room temperature Mix and react for 1 hour, then add histidine for mixing, add a pH regulator to make pH = 4.8, react at room temperature for 0.3 hours, then ...

Embodiment 2

[0024] A beating method using biological enzymes, comprising the following processing steps:

[0025] (1) pulp preparation: coniferous pulp and broadleaf pulp are mixed in a weight ratio of 6.5:3.5 to obtain mixed pulp;

[0026] (2) Preparation of beating biological enzymes: modified biological enzymes are used, and the modified biological enzymes are composed of the following raw materials in parts by weight: 43 parts of cellulase, 42 parts of hemicellulase, 13 parts of laccase, 62 parts of amino acid, 50 parts of L-phenylalanine methyl ester hydrochloride, 75 parts of 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride, 12 parts of activated carbon; The preparation method of the modified biological enzyme is: mix laccase with 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride and L-phenylalanine methyl ester hydrochloride at room temperature Mix and react for 1.5 hours, then add histidine for mixing, add a pH regulator to make pH = 5.2, react at room temperat...

Embodiment 3

[0030] A beating method using biological enzymes, comprising the following processing steps:

[0031] (1) Pulp preparation: softwood pulp and broadleaf pulp are mixed in a weight ratio of 7:3 to obtain mixed pulp;

[0032] (2) Preparation of beating biological enzymes: modified biological enzymes are used, and the modified biological enzymes are composed of the following raw materials in parts by weight: 45 parts of cellulase, 45 parts of hemicellulase, 15 parts of laccase, 65 parts of amino acid, 55 parts of L-phenylalanine methyl ester hydrochloride, 80 parts of 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride, 15 parts of activated carbon; The preparation method of the modified biological enzyme is: mix laccase with 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride and L-phenylalanine methyl ester hydrochloride at room temperature Mix and react for 2 hours, then add histidine for mixing, add a pH regulator to make pH = 6.0, react at room temperature for ...

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Abstract

The invention relates to the field of paper making and processing, provides a pulping method applying biological enzymes, which solves the defects that in the prior art a pulping method is high in energy consumption and high in production cost, and paper made by using the pulping method is poor in physical property, limited in enzyme activity site, relatively poor in enzyme activity and relativelyinstable. The pulping method comprises the following steps: (1) preparing pulp, namely mixing needle leaf pulp with broad leaf pulp according to a weight ratio of (6-7):(4-3) so as to obtain mixed pulp; (2) preparing pulping biological enzymes, namely preparing modified biological enzymes,; (3) performing mixing and pre-pulping treatment, namely putting 0.2-0.4kg / ton of the biological enzyme pretreatment mixed pulp modified in the step (2) into a crushing machine, controlling the temperature to 40-50 DEG C, performing reaction for 2 hours, and further pulping in a pulping machine; and (4) performing pulping, wherein the beating degree of the pulp after pulping is 75 degree SR.

Description

technical field [0001] The invention relates to the field of papermaking processing, in particular to a beating method using biological enzymes. Background technique [0002] Pulping consumes a lot of energy, accounting for about 15% to 18% of the total energy consumption from wood to paper production. Reducing the energy consumption of pulp beating is a strategic issue for energy saving and emission reduction in the paper industry. There are two ways to save energy in the paper industry: ① Reduce energy consumption per unit of product from management; ② Use new technologies to reduce energy consumption per unit of product. Among them, biotechnology has received more attention because it can reduce damage to the environment, save energy, and improve product quality. Compared with general non-biological catalysts, enzymes have the characteristics of mildness, specificity, high efficiency and adjustability. [0003] Enzymatic beating refers to the use of biological enzymes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00
Inventor 陈凤英肖尚冬余仕发
Owner 福建希源纸业有限公司
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