Biological accumulation pulping method

A pulping and biological technology, which is applied in the field of papermaking and pulping, can solve the problems of increasing production costs, unable to eliminate pollution, and polluting the environment with waste liquid, and achieves the effects of saving coal, being conducive to popularization and application, and improving pulp yield.

Inactive Publication Date: 2012-08-01
王福喜
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Problems solved by technology

[0005] At present, the main problem in pulping production is the waste liquid polluting the environment. The pollution can be reduced through the current feasible environmental protection new technology and equipment, but the pollution cannot be eliminated, o

Method used

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Embodiment Construction

[0025] The technological process of degrading lignin by bioaccumulation of raw materials such as straw, wheat straw, and reed is uniform; the same is true for broad-leaved wood such as bamboo willow and salix, but the accumulation time is longer.

[0026] The bioaccumulation pulping method of wheat straw, straw, reed, bamboo willow and salix is ​​carried out according to the following steps:

[0027] The first step: cut wheat straw, straw, reed, bamboo willow, salix and other raw materials with a grass cutter to a length of 5 cm, and slice woody plants to a length of 4 cm.

[0028] Step 2: Screening and dedusting the above-mentioned cut raw materials to remove impurities in the raw materials. First use air separator to remove soil, powder, plastic cloth and other sundries in raw materials. Then use a jumping sieve to remove iron wires, stones and other sundries, and finally wash with water to remove silicon-containing substances and some pigments.

[0029] Step 3: Put the ra...

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Abstract

The invention relates to a biological accumulation pulping method. The biological accumulation pulping method is characterized in that the biological accumulation pulping method comprises the following steps: cutting a pulping raw material into sections with the lengths of 4-5cm; carrying out screening and dust removal on the cut raw material; inputting the raw materials subjected to dust removal into a container; adding an aqueous solution of 0.5-0.6 potassium hydroxide according to the mass ratio of solid to liquid being 1:6; soaking the raw materials at the temperature of over 65DEG C and normal pressure for over 2 hours to enable the raw materials to quick absorb water and swell; inputting the swollen raw materials into an extrusion machine for removing water and rolling threads, wherein the thickness of the threads is 0.8-1.5mm; conveying the materials into a biological bacterial suspension pool, soaking the materials for over ten minutes, fishing and leaching; conveying the leached materials to a degradation pool for stacking fermentation; degrading lignin; sealing the upper end of the degradation pool with a plastic film and preserving moisture and temperature; controlling the temperature in the pool between 35 and 40DEG C and maintaining the temperature for 10-15 days; and pulping. The biological accumulation pulping method has the advantages of simple process, smooth flow, strong practicability, energy economization, water economization, and zero discharge and zero pollution in the pulping industry.

Description

Technical field: [0001] The invention relates to a bioaccumulation pulping method, which belongs to the technical field of paper pulping. Background technique: [0002] In the papermaking industry, it can be divided into two parts: pulping and papermaking. Pulping is the front end of papermaking. First, the process and technology of decomposing raw materials into pulp, and then making pulp into paper through a paper machine. [0003] In the traditional pulping process and technology, pulping production seriously pollutes the environment. It is a process of decomposing lignin under high temperature, high pressure and high alkali conditions to obtain cellulose. High temperature and high pressure reach 170-180℃, high energy consumption; large water consumption, about 100 tons per ton of pulp; high alkali (caustic soda) up to 26-40%, and various other chemicals, react with lignin at high temperature , generate a large amount of black liquor, which is the chief culprit of pollu...

Claims

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Application Information

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IPC IPC(8): D21C5/00
Inventor 王福喜
Owner 王福喜
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