Papermaking stewing accessory ingredient and preparing method thereof

A cooking aid, dimethylbenzene sulfonic acid technology, applied in papermaking, textile and papermaking, cellulose raw material pulping and other directions, can solve problems such as unfavorable continuous production, affecting cooking effect, pipeline scaling, etc., to reduce Effects of cooking alkali amount, shortening cooking time, and improving paper strength

Inactive Publication Date: 2013-06-05
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, my country's chemical pulping mainly uses anthraquinone and its derivatives as cooking aids, but the poor dispersion of anthraquinone additives in the cooking liquid seriously affects its cooking effect, and the use of anthraquinone additives results in serious scaling in the pipeline , not conducive to continuous production

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0032] A preparation method of a cooking aid for papermaking, comprising the following steps:

[0033] Step 1, weigh 2-20 parts of dimethylbenzenesulfonic acid, 10-35 parts of nonylphenol polyoxyethylene ether, 1-15 parts of urea, 1-10 parts of anthraquinone, and 1-10 parts of sodium sulfide according to the weight ratio. 10 parts or 5-50 parts of sodium sulfite, 40-100 parts of deionized water;

[0034] Step 2, add 40-100 parts of deionized water in step 1 into the reaction kettle, and slowly raise the temperature to 60-85°C, add 2-20 parts of dimethylbenzenesulfonic acid, 10- 35 parts, 1-15 parts of urea, stir well and keep warm for 30-45min;

[0035] Step 3, then add 1-10 parts of anthraquinone, 1-10 parts of sodium sulfide or 5-50 parts of sodium sulfite into the reaction kettle in step 2, heat up to 95-125°C, keep warm for 40-100min, and keep stirring, and finally After cooling to 30-40°C, the finished product can be discharged.

Embodiment 1

[0037] A preparation method of a cooking aid for papermaking, comprising the following steps:

[0038] Step 1, weigh 5 parts of dimethylbenzenesulfonic acid, 10 parts of nonylphenol polyoxyethylene ether, 4 parts of urea, 2 parts of anthraquinone, 2 parts of sodium sulfide or 10 parts of sodium sulfite, deionized water 40 copies;

[0039] Step 2, add 40 parts of deionized water in step 1 into the reaction kettle, and slowly raise the temperature to 60°C, add 5 parts of dimethylbenzenesulfonic acid, 10 parts of nonylphenol polyoxyethylene ether, and 4 parts of urea, Stir evenly and keep warm for 45 minutes;

[0040] Step 3, then add 2 parts of anthraquinone, 2 parts of sodium sulfide or 10 parts of sodium sulfite into the reaction kettle in step 2, raise the temperature to 95°C, keep it warm for 90 minutes, and keep stirring, and finally cool to 40°C to discharge the finished product.

Embodiment 2

[0042] A preparation method of a cooking aid for papermaking, comprising the following steps:

[0043] Step 1, weigh 10 parts of dimethylbenzenesulfonic acid, 15 parts of nonylphenol polyoxyethylene ether, 10 parts of urea, 5 parts of anthraquinone, 5 parts of sodium sulfide or 25 parts of sodium sulfite, deionized water 60 copies;

[0044] Step 2, add 60 parts of deionized water in step 1 into the reaction kettle, and slowly raise the temperature to 70°C, add 10 parts of dimethylbenzenesulfonic acid, 15 parts of nonylphenol polyoxyethylene ether, 10 parts of urea, and stir Keep warm for 35 minutes after uniformity;

[0045] Step 3, then add 5 parts of anthraquinone, 5 parts of sodium sulfide or 25 parts of sodium sulfite into the reaction kettle in step 2, raise the temperature to 110°C, keep it warm for 60 minutes, and keep stirring, and finally cool to 35°C to discharge the finished product.

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PUM

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Abstract

The invention discloses a papermaking stewing accessory ingredient and a preparing method thereof. The papermaking stewing accessory ingredient comprises, by weight, 2-20 parts of dimethyl benzenesulfonic acid, 10-35 parts of nonyl phenol polyoxyethylene ether, 1-15 parts of urea, 1-10 parts of anthraquinone, 1-10 parts of sodium sulphide and 40-100 parts of deionized water. The papermaking stewing accessory ingredient is good in alkali solubility, and capable of speeding delignification, reducing degradation of cellulose and hemicellulose, and improving performance of full stuff.

Description

technical field [0001] The invention relates to a papermaking auxiliary agent, in particular to a papermaking cooking auxiliary agent and a preparation method thereof. Background technique [0002] In the process of chemical pulping, cooking aids largely affect the lignin removal rate, pulp quality, pulp yield, etc., and also affect the effect of subsequent bleaching. [0003] At present, my country's chemical pulping mainly uses anthraquinone and its derivatives as cooking aids, but the poor dispersion of anthraquinone additives in the cooking liquid seriously affects its cooking effect, and the use of anthraquinone additives results in serious scaling in the pipeline , is not conducive to continuous production. Contents of the invention [0004] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a cooking aid for papermaking and its preparation method. The prepared solvent dissolves anthraquinone, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C3/22
Inventor 李佩燚张美云林春涛党育红李鸿魁修慧娟杜敏殷学风董浩
Owner SHAANXI UNIV OF SCI & TECH
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