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Paper pulp making technology by biological catalytic cracking method

A biological and catalytic technology, applied in the biological pulping process, the composite biocatalyst biocatalyzes the pulping raw materials to produce pulp, which can solve the problem of large fermentation wastewater, limited application value and long production cycle and other issues, to achieve the effects of low production cost, easy promotion, and short production cycle

Inactive Publication Date: 2009-07-15
杨黎明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] 200310114935.4 patent application discloses a biological pulping process, which is to use xylanase to pretreat cotton fibers to obtain pulp, and then bleach with alkali-hydrogen peroxide solution at normal temperature and pressure, but the materials used in this process Only limited to cotton fiber, the production is very limited, and the application value is limited
This method is a complete biopulping method, but the disadvantage is that the production cycle is long, and a large amount of fermentation wastewater will still be generated during the production process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 100g of white rot fungi, 100g of cellulase, 100g of pectinase and 200g of yeast into 500mL of water, mix and stir evenly, and make a composite biocatalyst for use.

[0034] Take 2t of Cottonwort, cut them all to a length of 2 to 5cm, add 5t of fresh ozone water prepared by injecting ozone gas with an ozone generator, and then add the composite biocatalyst prepared above, stir evenly, and add steam In the ball, soak the material while raising the temperature. After about 1 hour, raise the temperature of the catalytic solution to 100°C. After catalyzing the reaction at this temperature for 1 hour, the material is discharged. pulp.

Embodiment 2

[0036] Add 200g of white rot fungi, 120g of cellulase, 200g of pectinase and 400g of yeast into 800mL of water, mix and stir evenly, and make a composite biocatalyst for use.

[0037] Take 2t of poplar wood, cut into 2cm thick wood chips, add 4t of fresh ozone water, and then add the composite biocatalyst prepared above, stir evenly, add to the steaming ball, soak the material while raising the temperature, after about 1h, put the catalyst The temperature of the solution was raised to 120°C, and after catalyzed reaction at this temperature for 1.5 hours, the material was discharged, and the slurry was separated and refined to remove water and obtain 1.4t of dry pulp.

Embodiment 3

[0039] Add 120g of white rot fungi, 150g of cellulase, 120g of pectinase and 250g of yeast into 1000mL of water, mix and stir evenly, and make a composite biocatalyst for use.

[0040] Add 2 tons of reeds cut into 2 to 5 cm in length into 6 tons of fresh ozone water, then add the composite biocatalyst prepared above, stir evenly, add it to the steaming ball, soak the material while raising the temperature, and after about 1 hour, catalyze The temperature of the solution is raised to 110°C, and after catalyzed reaction at this temperature for 0.5h, the material is discharged, and the slurry is separated and refined to remove moisture, and 1.25t of dry slurry is obtained.

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PUM

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Abstract

The invention relates to a biocatalytic pulping process, which uses a composite biocatalyst composed of white rot fungus, cellulase, pectinase, yeast and water to process pulping raw materials wetted by ozone water. Biocatalyzed to produce slurry. The biocatalytic pulping process of the present invention only needs about 2 hours to catalyze the pulping raw material into papermaking slurry, no organic compound is generated during the degradation process, no washing of the slurry is required, no sewage is generated, and pollution is completely eliminated. Moreover, the process is simple, the production cycle is short, the energy consumption is small, and the invention is convenient for popularization.

Description

technical field [0001] The invention relates to a paper pulping process, in particular to a biological pulping process. Specifically, the present invention uses a composite biocatalyst to biocatalyze pulping raw materials to prepare pulp. Background technique [0002] The chemical pulping cycle is short, the production scale is large, and the raw material adaptability is strong, which is suitable for modern production. Therefore, most of the current paper production methods are mainly chemical methods. Among them, alkaline pulping and chlorine bleaching are the most common, that is, the papermaking raw materials are cooked with caustic soda under heating and pressure, so that complex components such as lignin, polysaccharides, pectin, and proteins in the raw materials are dissolved in the caustic soda liquid, and are mixed with caustic soda. Cellulose is separated to obtain pulp fibers; chlorine gas, hypochlorite, chlorine dioxide, etc. are used to bleach to obtain bleache...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C1/08C12S3/08
Inventor 杨黎明杨海
Owner 杨黎明
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