Production method for preparing chemimechanical pulp by synergy of biological enzyme and alkali

A production method and biological enzyme technology, applied in the field of pulping and papermaking, can solve the problems of low utilization efficiency of biological enzymes, high pulping resistance, low pulp strength, etc. The effect of high pulp strength
CN110656525AInactive Publication Date: 2020-01-07山东晨鸣纸业集团股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
山东晨鸣纸业集团股份有限公司
Publication Date
2020-01-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a production method for preparing chemimechanical pulp through synergy of a biological enzyme and an alkali. The production method specifically comprises the steps of raw material pretreatment, biological enzyme treatment, primary extrusion defibering, secondary extrusion defibering, liquid medicine dipping, and bleaching. Wastewater generated by the process is adopted for pretreatment of wood chips, biological enzyme treatment is combined, so that residual chemicals are fully utilized, the wastewater discharge is reduced, the consumption of sodium hydroxide and peroxides in the subsequent bleaching process is greatly reduced, and the method has dual significance of environmental protection and reality. The chemimechanical pulp prepared by the production process is good in pulping quality, pulp ISO whiteness reaches 82.97-85.36, pulp tearing index reaches 4.24-4.35 N.mm < 2 > / g, tensile strength reaches 27.8-29.1 N.m / g, and pulp fibers are firmly combined.
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Description

technical field

[0001] The invention belongs to the field of pulping and papermaking, and in particular relates to a production method for synergistically preparing chemical mechanical pulp with biological enzymes and alkalis. Background technique

[0002] With the rapid development of my country's papermaking industry and the rapid growth of total paper output, the insufficient supply of papermaking raw materials has become an important factor restricting the development of my country's papermaking industry. With the further growth of our country's economy and the continuous improvement of people's living standards, people's demand for paper products is also increasing. Only relying on high-quality wood raw materials is far from being able to meet market demand.

[0003] Chemical-mechanical pulp has the advantages of high bulk and good stiffness. At the same time, its high fiber content makes it have unique properties, making chemical-mechanical pulp more and more widely us...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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