Medicament agent for environment friendly pulping and environment friendly pulping process

A technology of pulping and pharmaceuticals, which is applied in pulping of cellulose raw materials, pulp beating/refining methods, pulp bleaching, etc., can solve the problems of difficult recycling of waste liquid, large process water consumption, and low pulp yield. It achieves the effect of increasing pulp yield, strong bleachability and reducing environmental pollution

Inactive Publication Date: 2008-11-12
王新军
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of low pulping rate of existing non-wood fiber raw materials, large process water consumption, difficult recycling of waste liquid and serious environmental pollution, the present invention Provided are a chemical for environmentally friendly pulping and a pulping process using the chemical

Method used

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Experimental program
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specific Embodiment approach

[0010] The specific implementation of the pulping process provided by the invention is as follows:

[0011] (1) Raw material pretreatment: before chemical mechanical pulping of non-wooden fiber raw materials (wheat straw), hot water + chemical agents are used for pretreatment to achieve the effect of softening non-wooden fiber raw materials. The chemical agents can be pulled apart powder, configured Form a hot solution with a solubility of 0.5-2%. The liquid ratio is 1:10-15 (g / ml), the temperature is 30-60°C, and the time is 20-60min.

[0012] (2) Separation: the tensile index and the tear index of the prepared non-wood fiber raw material (wheat straw) biochemical mechanical pulp increase by about 10% and 8% respectively; after pretreatment, the non-wood fiber raw material (wheat straw) is properly Screw extrusion can improve the utilization rate of subsequent equipment. Hot water + chemical pretreatment and spiral extrusion, grinding and splitting can remove some resins an...

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PUM

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Abstract

The invention provides a medicine that is used for environment-friendly pulping, which comprises the following components by weight: each 10 to 20 units of xylanase, hemicellulose, laccase and lignin peroxidase, 15 to 25 units of a strong oxidizing agent, 5 to 15 units of a soaking and softening agent and 3 to 8 units of a stabilizing agent. The invention further provides a pulping technique of a raw material of non-wooden fiber, which comprises the following steps: (1) the raw material is preprocessed; (2) devillicating is implemented; (3) biological and chemical soaking is implemented; (4) dehydrating is implemented; (5) jordaning is implemented; (6) filtering is implemented; (7) multi-section biological bleaching is implemented; wherein, the biological and chemical soaking in the step (3) uses the medicine that is used for the environment-friendly pulping. The medicine and particularly the pulping technique that are provided by the invention and used for the pulping with the raw material of non-wooden fiber can reduce water solubility to the least degree and raise pulp yield greatly, and have strong bleaching property and physical indexes of high-fibrousness papers that are higher than traditional pulping methods, and the medicine can be recycled, thus reducing the consumption of chemical medicines and environmental pollution.

Description

technical field [0001] The present invention relates to a papermaking pulping process and a medicament used in the pulping process. Background technique [0002] As people's demand for paper continues to increase, the problems of raw material shortage, energy shortage and environmental pollution that restrict the development of the paper industry have become more prominent. Due to limited wood resources, non-wood fiber raw materials - wheat straw, etc. have become important papermaking raw materials. The traditional wheat straw soda chemical pulping process includes high temperature and high pressure caustic soda cooking, black liquor extraction, washing, sieving, bleaching and other steps. This process requires a large amount of water and is not easy to recycle waste liquid, resulting in serious environmental pollution problems. . People's increasing awareness of environmental protection and increasingly stringent environmental regulations force paper workers to study and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C3/00C12S3/08C12S3/22D21D1/20D21C9/14D21C9/16
Inventor 王新军
Owner 王新军
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