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Paper-making pulping method

A pulping and forage technology, applied in papermaking, pulp bleaching, textiles and papermaking, etc., can solve the problems of environmental pollution, waste of resources, large sewage discharge, etc., achieve environmental pollution, reduce pulping cost, and facilitate treatment Effect

Inactive Publication Date: 2012-05-23
QUANZHOU HUAXIANG PAPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a papermaking pulping method to solve the problems of large sewage discharge, waste of resources and environmental pollution in the existing papermaking pulping process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] Embodiment: take wheat straw as raw material and cook with bleaching solution technological process:

[0014] Wheat straw→grass cutting→biological fermentation→bleaching solution preparation→bleaching→cooking→pulping, specific process description:

[0015] 1. Wheat straw: remove impurities;

[0016] 2. Grass cutting: according to the requirements, use a grass cutter to cut it into a length of 2-3 cm, and use a roller dust collector to remove the dust in the forage;

[0017] 3. Biological fermentation: put the chopped forage into a sealed fermentation tank, and immerse it in water with biological bacteria culture material. The humidity in the early stage is controlled at 18-20°C, and in the later stage at 20-25°C, a total of 2 anaerobic fermentation -7 days; the consumption of said biological bacteria compost is 4 kg / ton of forage, and said biological bacteria compost is selected from a kind of fermentation system filamentous flora, lactobacilli, yeast flora, aspergillu...

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Abstract

The invention discloses a paper-making pulping method which belongs to the technical fields of paper-making process and manufacture. The method comprises the processes of grass cutting, steam cooking and screening, wherein biological fermentation and bleaching processes are carried out before steam cooking, and the bleaching process refers to immersing in bleaching liquid for 2 to 5 days. The process of the invention is reasonable and feasible, the operation is simple and convenient, the paper-making pulp manufactured by the process does not need disinfection, and the pulping cost is low; thestock solution is convenient for processing, the cod index of disposed water is less than 300, and the disposed water does not pollute the environment or even underground water.

Description

technical field [0001] The invention discloses a papermaking pulping method, which belongs to the technical field of papermaking technology, and in particular relates to the pulping technology in the papermaking process. Background technique [0002] At present, the paper industry has a history of hundreds of years. Paper mills using wood or grass fibers as raw materials are spread all over the country, of which more than 70% are mills with a capacity of more than 10,000 tons. Most of them use alkaline or acid pulping processes. It consists of raw materials, cutting, cooking, rinsing, and screening processes. In the process of cooking, rinsing, and screening, this pulping process not only needs to consume a lot of acid, alkali, salt, etc., but also has high paper production costs; Sewage and sewage harmful to people, livestock and crops have high concentration of suspended solids and organic substances in water, deep color, high acid or alkali, and poor biodegradability. Se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C1/00D21C9/14
Inventor 甘木林
Owner QUANZHOU HUAXIANG PAPER IND
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