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Device and method for washing polyvinyl alcohol fibers with water at low temperature

A polyvinyl alcohol fiber, low-temperature technology, applied in the direction of artificial filament cleaning/drying, synthetic polymer artificial filament chemical post-treatment, etc., can solve the problems of increased production, difficult production, and decreased output rate, and achieve reduction Residue, reduction of water consumption, effect of reduction of water consumption

Inactive Publication Date: 2021-06-08
HUNAN XINJINFU MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the RP value is lower than 70°C, the partial structure of the polyvinyl alcohol fiber begins to dissolve into the water during washing, resulting in a decrease in output rate; when the RP value is lower than 65°C, the amount of the partial structure of the polyvinyl alcohol fiber dissolved into the water increases, and the production difficulty

Method used

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  • Device and method for washing polyvinyl alcohol fibers with water at low temperature
  • Device and method for washing polyvinyl alcohol fibers with water at low temperature
  • Device and method for washing polyvinyl alcohol fibers with water at low temperature

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Embodiment Construction

[0029] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0030] A device for washing polyvinyl alcohol fibers with low temperature water, comprising: an electrolytic cell 1, a positive electrode plate 2 arranged on both sides of the electrolytic cell 1, a negative electrode plate 3, and a polyvinyl alcohol fiber 7 passing through the positive electrode plate 2 and the negative electrode plate 3, the reaction waste outlet 8 arranged on both sides of the electrolytic cell 1, the gas outlet 4 arranged at the upper end of the electrolytic cell 1, and the polyvinyl alcohol fiber arranged at the position between the positive electrode plate 2 and the negative electrode plate 3 Transport components.

[0031] The polyvinyl alcohol fiber transmission component consists of: a squeeze roller 5 arranged at the front and back of the upper end of the electrolytic cell 1 , a guide roller 6 arranged in the ele...

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Abstract

The invention discloses a device and method for washing polyvinyl alcohol fibers with water at low temperature. The device comprises an electrolytic tank, a positive electrode plate, a negative electrode plate, reaction waste outlets and an air outlet, wherein the positive electrode plate and the negative electrode plate are arranged on the two sides of the electrolytic tank; the polyvinyl alcohol fibers penetrate through the position between the positive electrode plate and the negative electrode plate; the reaction waste outlets are formed in the two sides of the electrolytic tank; and the air outlet is formed in the upper end of the electrolytic tank. According to the invention, a washing tank is set as the electrolytic tank, residues of the polyvinyl alcohol fibers are discharged from the air outlet and the reaction waste outlets through an electrolytic reaction and a hydrolysis reaction, the requirement for the temperature is low, and the production conversion rate of the polyvinyl alcohol fibers is high.

Description

technical field [0001] The invention relates to the field of polyvinyl alcohol fiber production technology, in particular to a device and method for washing polyvinyl alcohol fibers with low temperature water. Background technique [0002] Coagulation baths for polyvinyl alcohol wet spinning include inorganic salt solution, NaOH solution and organic solvent, etc., the most widely used is Na 2 SO 4 aqueous solution. [0003] During the production of polyvinyl alcohol, by-products are difficult to completely remove, the most common being CH 3 COONa remains. [0004] Post-processing of polyvinyl alcohol fibers generally includes stretching, heat setting, washing, oiling, drying and other processes. The washing temperature is 70-80°C, because washing at this temperature can effectively remove the CH attached to the fiber. 3 COONa and CH 3 COONa washes off, while normal temperature water washes off due to CH 3 COONa and CH 3 The reason for the poor solubility of COONa mak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D10/06D01F11/06
CPCD01D10/06D01F11/06
Inventor 陈绍永
Owner HUNAN XINJINFU MEDICAL TECH CO LTD
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