Preparation method of efficient waste paper de-inking agent

A high-efficiency technology for waste paper deinking, applied in the direction of chemical paint/ink remover, coating, etc., can solve the problems of high cost, poor deinking effect, etc., and achieve increased pulp yield, improved ink removal rate, and compatibility good sex effect

Inactive Publication Date: 2014-01-29
SHANXIAN TIANYUAN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the cost of deinking agents on the Chinese market is relatively high, and the deinking effect is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Put 30kg of butter in a reaction kettle, add 10kg of water and 10kg of sodium hydroxide, heat to boiling with steam, and keep stirring until the saponification is complete, which takes about 50 minutes to obtain a transparent liquid soap;

[0022] Butter is a white or light yellow paste with a purity of over 99%.

[0023] (2) Precipitate and cool the liquid soap in the reaction kettle for 30 minutes. After the soap and water are separated, put the separated 30kg soap into the stirring tank;

[0024] (3) Add 2kg sulfonic acid, 1kg fatty alcohol polyoxyethylene ether, 0.5kg alkylphenol polyoxyethylene ether, 0.5kg sorbitan monooleate polyoxyethylene ether, 0.5kg ethylenediaminetetra Acetic acid and 0.5kg lauric acid random polyether are used as surfactants, and then 15kg sodium sulfate, 0.15kg carboxymethyl cellulose and 0.1kg stripping agent are added as auxiliary materials. After stirring for 30 minutes evenly, put it into a granulator for press molding , become gr...

Embodiment 2

[0029] The preparation steps are as in Example 1.

[0030] The amounts of soap, surfactant and auxiliary material in the mixing tank are respectively:

[0031] Soap 25kg, sulfonic acid 2.5kg, fatty alcohol polyoxyethylene ether 1.5kg, alkylphenol polyoxyethylene ether 1kg, sorbitan monooleate polyoxyethylene ether 1kg, ethylenediaminetetraacetic acid 0.5kg and lauric acid free Ordinary polyether 1kg, sodium sulfate 17.5kg, carboxymethyl cellulose 0.25kg, stripping agent 0.25kg.

Embodiment 3

[0033] The preparation steps are as in Example 1.

[0034] The amounts of soap, surfactant and auxiliary material in the mixing tank are respectively:

[0035] Soap 55kg, sulfonic acid 4.5kg, fatty alcohol polyoxyethylene ether 2.5kg, alkylphenol polyoxyethylene ether 1.5kg, sorbitan monooleate polyoxyethylene ether 1.5kg, ethylenediaminetetraacetic acid 1kg and lauric acid 1.5kg of random polyether, 325kg of sodium sulfate, 0.4kg of carboxymethyl cellulose, and 0.35kg of release agent.

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PUM

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Abstract

The invention belongs to the technical field of de-inking and in particular discloses a preparation method of an efficient waste paper de-inking agent. The preparation method comprises the following steps: putting the beef tallow serving as a raw material into a reaction kettle; adding water and sodium hydroxide; performing steam heating until boiling; continuously stirring until saponification is finished to obtain transparent liquid soap; precipitating and cooling the liquid soap in the reaction kettle; after soap and water are separated, putting separated soap into an agitation tank; adding a surfactant and auxiliary materials into the agitation tank; and after evenly stirring, pelleting and drying to obtain the de-inking agent. The product disclosed by the invention has good compatibility with other chemical additives, is energy-efficient and environmentally-friendly and completely meets the waste paper de-inking requirements of Europe, America, Japan and the like; and the whiteness of the finished product paper can be improved by 2-5%, and the ink removal rate can be improved by 10-15%.

Description

(1) Technical field [0001] The invention belongs to the technical field of deinking, in particular to a preparation method of a high-efficiency waste paper deinking agent. (2) Background technology [0002] At present, most of the waste paper deinking agents in my country's large paper mills use imported foreign products. Foreign deinking agents are used in small quantities and have stable quality, while domestic deinking agents are less effective. The reason is that my country's surfactant industry started relatively early. Late, the products are relatively backward, and the formula of deinking agent in my country lacks the theoretical guidance of the compatibility of various surfactants, and the compatibility is poor. [0003] The earliest waste paper deinking agent in my country was composed of industrial soap plus sodium hydroxide, plus rare, sodium hydroxide, and hydrogen peroxide. Sodium dodecylbenzene sulfonate and alcohol ether or phenol ether surfactants are mos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D9/04
Inventor 王永臣
Owner SHANXIAN TIANYUAN CHEM CO LTD
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