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A kind of dry-cut cotton fiber biological enzyme pulping process

A cotton fiber and bio-enzyme technology, which is applied in fiber raw material processing, pulp bleaching, finely split raw material pretreatment, etc., can solve the problems of safety hazards in the use of pressure vessels, ineffective removal of raw material impurities, and excessive use of chemicals, etc., to achieve Improve bleachability and evenness, increase productivity, and improve paper quality

Active Publication Date: 2019-03-22
BAODING BANKNOTE PAPER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The domestic cotton fiber pulping process mostly uses equipment such as steaming balls, steaming pots, and horizontal tube continuous digesters for steaming and bleaching, and the steaming and bleaching process usually uses alkaline method or alkaline hydrogen peroxide method, but the steaming and bleaching temperature is relatively high. The pressure is too high, the amount of chemicals is large, and the fibers will be degraded to a large extent. At the same time, there are safety hazards in the use of pressure vessels.
[0004] Cotton pulp is generally produced by normal pressure and low temperature steaming and bleaching process in foreign countries. This process adopts tower steaming and bleaching system, which has low energy consumption and the physical properties of pulp will be improved. However, this process cannot effectively remove impurities in raw materials. Suitable for raw materials with less impurity

Method used

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  • A kind of dry-cut cotton fiber biological enzyme pulping process
  • A kind of dry-cut cotton fiber biological enzyme pulping process
  • A kind of dry-cut cotton fiber biological enzyme pulping process

Examples

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Embodiment 1

[0050] The present embodiment provides a dry cut cotton fiber biological enzyme pulping process, which comprises the following steps:

[0051] 1. Dry material preparation system

[0052] The system used in the dry material preparation process includes a cleaning system, cotton fiber longitudinal finishing equipment and a cutting machine. machine connected.

[0053] The working width of the cotton fiber longitudinal finishing equipment (carding machine) is more than 1.5m.

[0054] The number of moving blades of the cutting machine is 20-40 pieces.

[0055] The motor speed of the cutting machine is 1000 rpm.

[0056] The feeding speed of the conveyor belt is above 150m / min.

[0057] 2. Dry material preparation process

[0058] Raw material: comb noil, production capacity is 10 tons;

[0059] The dry material preparation process is realized by the above-mentioned dry material preparation system, and the dry material preparation process flow chart is as follows figure 1 As ...

Embodiment 2

[0075] The present embodiment provides a dry cut cotton fiber biological enzyme pulping process, which comprises the following steps:

[0076] Raw material: dry-cut cotton linters, containing 0.2-0.5wt% impurities (calculated based on the total weight of dry-cut cotton fibers);

[0077] First, put the dry-cut cotton linters into the steamer, add water to the steamer, then add wetting agent and pectinase, turn on the circulation pump, start heating up, stop heating when the temperature reaches 60°C, and start keeping warm. After 30 minutes of heat preservation, it can become a slurry;

[0078] Then, sodium hydroxide and hydrogen peroxide were added to the pretreated slurry, and the pretreated slurry was steamed and bleached at 85° C. for 40 minutes.

[0079] Based on the total weight of the dry cotton linters as 100%, the dosage of the pectinase is 0.3wt%, and the dosage of the wetting agent TC-1 is 0.02%;

[0080] In the pretreatment process, the mass ratio of the dry cuttin...

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Abstract

The invention provides a dry-cut cotton fiber bio-enzyme pulping process. The process includes the following steps that dry-cut cotton fibers are pretreated with pectinase to obtain pulp; the pretreated pulp is subjected to cook bleaching through an alkaline hydrogen peroxide method. According to the dry-cut cotton fiber bio-enzyme pulping process, firstly, the cotton fibers are firstly pretreated with bio-enzymes to remove pectin and other impurities affecting following production, and then the pretreated pulp is subjected to cook bleaching through the alkaline hydrogen peroxide method. According to the dry-cut cotton fiber bio-enzyme pulping process, production can be completed under low-temperature and normal-pressure conditions, and the use amount of chemical medicine can be greatly reduced; meanwhile alkaline hydrogen peroxide bleaching operation is also carried out under the normal-pressure condition. The pulp prepared through the dry-cut cotton fiber bio-enzyme pulping process completely meets the production requirements of banknote paper pulping.

Description

technical field [0001] The invention relates to a dry-cut cotton fiber biological enzyme pulping process, which belongs to the technical field of papermaking, and more specifically, belongs to the technical field of pulping in the papermaking process. Background technique [0002] At present, cotton fiber pulping generally adopts chemical pulping, that is, by adding a large amount of chemicals and auxiliaries to chemically remove impurities in cotton fibers, and then achieve the purpose of pulping; at the same time, chemical methods and mechanical methods are also used in this field The pulping method combined with different methods can properly reduce the consumption of chemicals. [0003] The domestic cotton fiber pulping process mostly uses equipment such as steaming balls, steaming pots, and horizontal tube continuous digesters for steaming and bleaching, while the steaming and bleaching process usually uses alkaline method or alkaline hydrogen peroxide method, but the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21B1/06D21C9/16D21C1/00
CPCD21B1/06D21C1/00
Inventor 郭志强马建恒朱西赏冉飞
Owner BAODING BANKNOTE PAPER CO LTD
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