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Heating-free no-sewage purified cotton manufacturing method

A technology for refining cotton and sewage, which is applied in textiles, papermaking, and fiber raw material processing, and can solve problems such as high sewage, air pollution, and water pollution

Inactive Publication Date: 2013-07-24
罗晓政 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned process is basically the same as the straw pulp papermaking process that the state has ordered to stop. During the production, a large amount of black liquor and other sewage will be discharged, and a large amount of energy such as coal will be consumed, causing serious water pollution, air pollution, high pollution discharge, and high energy consumption.

Method used

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  • Heating-free no-sewage purified cotton manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0041] Embodiment 2 manufactures refined cotton by placing 2 years grayish yellow old short-staple cotton

[0042] Weigh 1,000 kilograms of refined cotton from old short-staple cotton that has been stocked in Xingtai, Hebei for 2 years, and the process is as follows:

[0043] 1) Cotton opening: Send the unpacked old short-staple cotton to the cotton opener, beat it into a loose shape, and separate part of the dust and impurities through the upper mouth of the cyclone separator, and 985 kg of loose short-staple cotton at the lower mouth of the cyclone separator.

[0044] 2) Mixing: Weigh 400 kilograms of (1) gained loose old linters, drop into the noodle joint machine and drench 1800 kilograms of 7.5% NaOH aqueous solution, and knead forward and reverse at room temperature for 20 minutes, and the reactant changes from grayish yellow to It is pink and muddy cotton mixture, and the material is discharged into the maceration tank.

[0045] 3) Maceration: After soaking the cotton ...

Embodiment 3

[0067] Embodiment 3: Produce refined cotton with the short-staple cotton produced in Xinjiang in the same year:

[0068] Take by weighing 1000 kilograms of short-staple cotton from Xinjiang to make refined cotton, and its process is as follows;

[0069] 1) Cotton opening: The unpacked Xinjiang short-staple cotton is sent to a baler to be beaten into evacuation, and part of the ash impurities are separated to obtain 988 kg of loose short-staple cotton.

[0070] 2) mixing, take by weighing 550 kilograms of (1) gained loose short-staple cotton, drop in the noodle joint machine, drench in 3.5% NaOH aqueous solution, 3500 kilograms, mixing 20 minutes under room temperature, reactant is light pink cotton mixture, The material is discharged into the maceration tank.

[0071] 3) Maceration: After soaking the cotton mixture in the maceration tank for 8 hours, take samples and test it every 1 hour. Impurities such as broken cottonseed shells in the cotton mixture have swelled and can b...

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Abstract

The invention discloses a heating-free no-sewage purified cotton manufacturing method. The heating-free no-sewage purified cotton manufacturing method comprises the following steps of cotton opening, blending, retting, untwisting, shoving, pulp washing, bleaching, drying packaging and black liquor precipitation recovery, and comprehensive utilization. In purified cotton production, the heating-free no-sewage purified cotton manufacturing method avoids boiling and heating processes, greatly reduces energy consumption, avoids carbon dioxide discharge and realizes low carbon and energy saving. In production, the black liquor is completely precipitated and recovered so that sewage is not discharged; environment pollution is reduced; and waste is changed into values. The heating-free no-sewage purified cotton manufacturing method has the advantages of simple processes, low equipment requirements, low production cost, high benefits, low investment, fast onset and good product quality.

Description

technical field [0001] The invention relates to a method for refining short-staple cotton, in particular to a method for manufacturing short-staple cotton containing a large amount of impurities into white refined cotton without heating or discharging sewage, which belongs to the chemical pulp manufacturing process. technical background [0002] Cotton is grown in large areas in Xinjiang, Hebei, Henan, Shandong, Anhui and other Central Plains. The cotton picked from cotton bolls can only be processed into about 40% lint, and the remaining 60% is cottonseed, which is covered with a layer of short-staple cotton, and the cottonseed is mechanically stripped to obtain cottonseed and short-staple cotton. Cotton accounts for more than 20% of the total cotton. Short-staple cotton is a kind of low-quality cotton that contains more broken cotton seed husks, broken cotton leaves, broken cotton peach shells, dust and other impurity cotton linters. It cannot be directly used in industr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00
Inventor 罗晓政才永欣
Owner 罗晓政
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