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Production method with function of improving deinking efficiency and for corrugating medium paper

A corrugated core paper and production method technology, applied in the field of papermaking technology, can solve the problems of high difficulty in sewage treatment, complicated deinking process, high deinking cost, etc., and achieve the goal of reducing the difficulty of wastewater treatment, improving paper performance, and reducing deinking cost Effect

Active Publication Date: 2019-04-16
东莞顺裕纸业有限公司
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AI Technical Summary

Problems solved by technology

[0004] However, the deinking process still has the problems of complex deinking process, low deinking efficiency and high deinking cost, and the deinking process fails to reduce or avoid the use of alkaline bleach, and its sewage treatment is difficult, so it is necessary to Improve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] A method for producing corrugated medium paper with improved deinking efficiency, comprising the following steps:

[0041] Preparation of compound neutral deinking agent:

[0042] 1) Mix isomeric fatty alcohol polyoxyethylene ether sodium sulfate solution and hydrogen peroxide solution, and stir evenly, the temperature is controlled at 40°C, the stirring speed is 90rpm, and the concentration of isomeric fatty alcohol polyoxyethylene ether sodium sulfate is 20%. The first mixed solution, wherein the concentration of hydrogen peroxide solution is 3%,;

[0043] 2) add coconut acid diethanolamide (6501) solvent to this mixture, and stir evenly, temperature control is 25 ℃, and stirring speed is 115rpm, obtains the second concentration of coconut acid diethanolamide (6501) that is 10%. mixed solution;

[0044] 3) Add fatty alcohol polyoxyethylene ether (AEO-9) solvent to the second mixed solution, and stir evenly. 12% compound neutral deinking agent. Experiments have pro...

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PUM

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Abstract

The invention discloses a production method with the function of improving the deinking efficiency and for corrugating medium paper. The production method comprises the steps of soaking and activating, hydraulic repulping, sifting and slag removal, rubbing and centrifugal deinking, bleaching, washing and concentrating and pulp storage. A neutral deinking agent is utilized for directly rubbing andcentral deinking on waste paper fibers, through technological cooperation between printing ink activating and centrifugal deinking, printing ink is separated, the use amount of an alkaline deinking agent is reduced, the production cost for waste paper making is further reduced, the deinking efficiency is improved, the deinking rate is increased, the whiteness is improved, and the pollution to theenvironment is reduced.

Description

technical field [0001] The invention relates to the technical field of papermaking technology, in particular to a production method of corrugated medium paper which improves deinking efficiency. Background technique [0002] With the increasing shortage of plant resources, waste paper has become an important source of raw materials for the paper industry. The recycling of waste paper is an effective way to solve the three major problems faced by the paper industry, such as shortage of raw materials, energy shortage and serious pollution. Among them, the deinking treatment of waste paper is one of the important steps of waste paper recycling, and the key to judging the pros and cons of deinking technology lies in whether the ink in waste paper can be removed efficiently and whether the fibers of waste paper can be effectively protected. Integrity, and whether it can reduce or avoid the pollution of deinking wastewater to water bodies. [0003] Traditional deinking technolog...

Claims

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Application Information

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IPC IPC(8): D21C5/02D21C9/16D21C9/02D21C11/00
CPCD21C5/02D21C5/025D21C5/027D21C9/02D21C9/163D21C11/0021Y02W30/64
Inventor 刘伟锋赖耀康刘志锋
Owner 东莞顺裕纸业有限公司
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