Enzymatic pulping process

A process and enzymatic technology, applied in the field of papermaking, can solve the problem of low energy consumption and achieve the effects of saving energy consumption, improving beating capacity, and inhibiting quality decay

Inactive Publication Date: 2018-02-02
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

It solves the technical problem of little reduction in energy consumption in the existing enzymatic beating process

Method used

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Embodiment Construction

[0015] The present invention will be further described in combination with specific embodiments.

[0016] The present embodiment provides an enzymatic beating process, comprising the following steps:

[0017] In the first step, modifying the first laccase and the second laccase respectively to obtain the modified first laccase and the second laccase;

[0018] In the second step, take the coniferous wood pulp board and use a hydraulic pulper to disintegrate it, then stir it, then add the first laccase and nano-bentonite suspension, control the temperature at 40-50°C, react for 2 hours, and then perform beating, after beating When the degree of percussion is above 80°SR, the dosage of the first laccase is 0.3kg / ton pulp;

[0019] The third step is to take the hardwood pulp board and use a hydraulic pulper to disintegrate it, then stir it, then add the second laccase and nano-bentonite suspension, control the temperature at 40-50°C, react for 2 hours, and then perform beating, a...

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PUM

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Abstract

The invention relates to the technical field of papermaking, in particular to an enzymatic pulping process. The enzymatic pulping process comprises the following steps: 1, modifying first laccase andsecond laccase separately to obtain modified first laccase and second laccase; 2, defibering a needle leaf wood-pulp board by a hydrapulper, then stirring, adding the first laccase and nanometer bentonite suspension liquid, reacting for 2 hours and pulping, wherein the use amount of the first laccase is 0.3 kg per ton of pulp; 3, defibering a broad leaf wood-pulp board by the hydrapulper, then stirring, adding the second laccase and the nanometer bentonite suspension liquid, reacting for 2 hours and pulping, wherein the use amount of the second laccase is 0.3 kg per ton of pulp; and 4, mixingthe needle leaf wood pulp and the broad leaf wood pulp, then adding composite enzyme, performing treatment, feeding into a pulping machine and pulping. The technical problem that the energy consumption is reduce less in the existing the enzymatic pulping process is solved.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to an enzymatic beating process. Background technique [0002] Chinese Patent No.: 201710500144.7 discloses a method for biological enzyme-assisted beating, which relates to the field of papermaking technology. The raw material used in the beating method is 100% natural color coniferous wood pulp board. Natural-color coniferous wood pulp boards are decompressed with a hydraulic pulper for a certain period of time, and then stirred at a constant speed; (2) Add a certain amount of enzyme and nano-bentonite suspension to the decomposed slurry, and treat it at a certain temperature for a period of time. time, and then inactivate the slurry; (3) beat the treated slurry through a PFI refiner. The patent uses biological enzymes to pretreat the pulp, which can promote the water absorption and stretching of the fibers and the degree of fibrillation, so that the beating performance is im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00
Inventor 肖尚冬林淑芳陈凤英
Owner 福建希源纸业有限公司
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