A production method of corrugated medium paper with improved deinking efficiency

A technology for corrugated core paper and a production method, which is applied in the field of papermaking technology, can solve the problems of high difficulty in sewage treatment, complicated deinking process, and high deinking cost, and achieves high deinking efficiency, reduced processing difficulty, and reduced deinking cost. Effect

Active Publication Date: 2021-04-20
东莞顺裕纸业有限公司
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  • Abstract
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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

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Comparison scheme
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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] Step A), mix isomeric fatty alcohol polyoxyethylene ether sodium sulfate solution and hydrogen peroxide solution, and stir evenly, the temperature is controlled at 40°C, and the stirring speed is 90rpm, and the concentration of isomeric fatty alcohol polyoxyethylene ether sodium sulfate is 20% of the first mixed solution, wherein the concentration of hydrogen peroxide solution is 3%,;

[0043] Step B), add coconut acid diethanolamide (6501) solvent to the mixture, and stir evenly, the temperature is controlled at 25°C, the stirring speed is 115rpm, and the concentration of coconut acid diethanolamide (6501) is 10%. the second mixture;

[0044] Step C), add fatty alcohol polyoxyethylene ether (AEO-9) solvent to the second mixture, and stir evenly, control the temperature at 45°C, and stir at ...

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PUM

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Abstract

The invention discloses a production method of corrugated medium paper with improved deinking efficiency, which comprises a soaking activation step, a hydraulic pulping step, a screening and slag removal step, a rubbing centrifugal deinking step, a bleaching step, a washing and concentrating step and a pulp storage step. Use a neutral deinking agent to directly rub the waste paper fibers for centrifugal deinking, and separate the ink through the process cooperation between activated ink and centrifugal deinking, which reduces the amount of alkaline deinking agent used and further reduces waste paper making The production cost is reduced, the deinking efficiency and ink removal rate are improved, the whiteness is improved, and the pollution to the environment 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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Patent Type & Authority Patents(China)
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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