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Production process of purified cotton with super-high viscosity

A production process and refined cotton technology, which is applied in pulping with acid/acid anhydride, textile and papermaking, fiber raw material treatment, etc., can solve the problems of large amount of bleaching agent hydrogen peroxide, different temperatures, and ineffective use of hydrogen peroxide, etc., to achieve The effect of shortening the cooking time and improving the cooking effect

Inactive Publication Date: 2013-08-07
杨金福
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the domestic textile industry, the performance indicators of refined cotton mainly include viscosity, cellulose A content, moisture content, moisture absorption, ash content, sulfuric acid insoluble content and whiteness. The higher the better, in the traditional process, cooking is completed through 2-3 stages, the temperature of each stage is different, the process is not easy to control, the amount of bleaching agent hydrogen peroxide consumed per unit product during bleaching is large, and hydrogen peroxide cannot be obtained during bleaching time Effective utilization, the viscosity of refined cotton is only 800mPa·s

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A production process of ultra-high viscosity refined cotton, comprising the following steps:

[0017] a, the cotton linter raw material is opened with a cotton opener, and then the hydrochloric acid treatment solution with a mass concentration of 0.1% is sprayed to the cotton linters after opening, and the quality of the hydrochloric acid treatment solution is 3 times that of the cotton linter quality;

[0018] b. Put the cotton linters after the above-mentioned acid treatment into the alkaline activation solution, the alkaline activation solution is a sodium hydroxide solution with a mass concentration of 0.5%, stir and activate, stir for 0.5 hours, then add the activated cotton pulp Cook in the cooking liquid, cook at 120°C, the content of sodium hydroxide in the cooking liquid is 20g / l, the mass percentage of the emulsifier in the cooking liquid is 0.1%, and the emulsifier is sodium alkylbenzene sulfonate;

[0019] c. Wash the absorbent cotton after cooking for 15 mi...

Embodiment 2

[0022] A production process of ultra-high viscosity refined cotton, comprising the following steps:

[0023] a, the cotton linter raw material is opened with an opener, and then the hydrochloric acid treatment solution with a mass concentration of 0.1% is sprayed to the cotton linters after opening, and the quality of the hydrochloric acid treatment solution is 4 times that of the cotton linter quality;

[0024] b. Put the cotton linters after the above-mentioned acid treatment into the alkaline activation solution, the alkaline activation solution is a sodium hydroxide solution with a mass concentration of 0.5%, stir and activate, stir for 0.8 hours, then add the activated cotton pulp Cook in the cooking liquid, cook at 130°C, the content of sodium hydroxide in the cooking liquid is 25g / l, the mass percentage of the emulsifier in the cooking liquid is 0.2%, and the emulsifier is sodium alkylbenzene sulfonate;

[0025] c. Wash the absorbent cotton after cooking for 22 minutes,...

Embodiment 3

[0028] A production process of ultra-high viscosity refined cotton, comprising the following steps:

[0029] a, the cotton linter raw material is opened with a cotton opener, and then the hydrochloric acid treatment solution with a mass concentration of 0.1% is sprayed to the cotton linters after opening, and the quality of the hydrochloric acid treatment solution is 5 times that of the cotton linter quality;

[0030] b. Put the cotton linters after the above acid treatment into the alkaline activation solution, the alkaline activation solution is a sodium hydroxide solution with a mass concentration of 0.5%, stir and activate, stir for 1 hour, then add the activated cotton pulp Cook in the cooking liquid, cook at 140°C, the content of sodium hydroxide in the cooking liquid is 30g / l, the mass percentage of the emulsifier in the cooking liquid is 0.3%, and the emulsifier is sodium alkylbenzene sulfonate;

[0031] c. Wash the absorbent cotton after cooking for 30 minutes, then a...

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PUM

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Abstract

The invention discloses a production process of purified cotton with super-high viscosity, including the steps of to perform fiber opening on cotton linters by using a fiber opening machine, spraying hydrochloric acid conditioning fluid with mass concentration of 0.1% on the opened cotton linters, placing the cotton linters after acid treatment into alkaline activated fluid, adding the activated cotton pulp into cooking liquor for cooking, washing the cooked degreasing cotton, adding sodium chlorite with mass concentration of 0.1-0.3% to perform pre-bleaching for 0.5-1 hour, then washing for 10-20 minutes, adding hydrogen peroxide with mass concentration of 0.3-0.5% to perform bleaching, adding water into white pulp and removing sands, carrying out centrifugal dewatering, dispersing the dehydrated cotton pulp in a grinder, and drying the moisture to obtain a finished product. The production process is sophisticated and has mild reaction condition, and the produced purified cotton has high whiteness and viscosity.

Description

technical field [0001] The invention relates to a production process of ultra-high-viscosity refined cotton, which belongs to the technical field of textiles. Background technique [0002] In the domestic textile industry, the performance indicators of refined cotton mainly include viscosity, cellulose A content, moisture content, moisture absorption, ash content, sulfuric acid insoluble content and whiteness. The higher the better, in the traditional process, cooking is completed through 2-3 stages, the temperature of each stage is different, the process is not easy to control, the amount of bleaching agent hydrogen peroxide consumed per unit product is large during bleaching, and hydrogen peroxide cannot be obtained during bleaching time Effective utilization, the viscosity of refined cotton is only 800mPa·s. Therefore, it is necessary to provide a new technical solution to solve the above problems. Contents of the invention [0003] The purpose of the present inventio...

Claims

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Application Information

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IPC IPC(8): D21C5/00D21C3/04
Inventor 杨金福
Owner 杨金福
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