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Supercritical fluid phase transfer catalytic desizing method for textiles

A supercritical fluid, phase transfer catalysis technology, applied in textile and papermaking, textile material processing, textile material container processing, etc., can solve the problems of high pollution, high energy consumption, high emissions, etc., achieve less damage to the cloth, activation Low energy and less damage

Active Publication Date: 2019-11-12
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a supercritical fluid phase transfer catalytic desizing method for textiles, which solves the problems of high energy consumption, high emissions and high pollution of traditional desizing methods. The processing method provided by the invention is easy to operate, The process is simple, the energy consumption is low, and it has the characteristics of ecological environmental protection, energy saving and emission reduction, etc.

Method used

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  • Supercritical fluid phase transfer catalytic desizing method for textiles

Examples

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Embodiment 1

[0037] The invention provides a supercritical fluid phase transfer catalytic desizing pretreatment method of textiles, the phase transfer catalytic desizing pretreatment method adopts such as figure 1The desizing reactor shown in the supercritical carbon dioxide fluid is realized. The reactor includes a mixed liquid storage tank 1 and a desizing tank 2 sealedly connected with the desizing liquid storage tank 1 through a connecting device. The desizing liquid storage kettle 1 is a cylindrical kettle body, and an inverted "mountain"-shaped tubular fluid distributor 3 is installed inside. It is mainly composed of three interconnected pipes. The pipe in the center is a circulating fluid inlet pipe, and the circulating fluid The bottom end of the inlet pipe is connected with a supercritical carbon dioxide fluid treatment system (not shown in the figure) with a circulating pump; the two pipes on both sides are the circulating fluid outlet pipes, and the mouths of the two circulating...

Embodiment 2

[0054] This example provides a supercritical fluid phase transfer catalytic desizing method for textiles, the steps of which are basically the same as those in Example 1, except that the concentration of hydrogen peroxide in the mixed solution is 2 mol / L.

[0055] For the green cotton product treated in Example 2, the weight loss rate of the cotton product after desizing treatment is 4.47%, the gross value is 7.1 cm, and the whiteness is 66.1.

Embodiment 3

[0057] This example provides a supercritical fluid phase transfer catalytic desizing method for textiles, the steps of which are basically the same as those in Example 1, except that the concentration of hydrogen peroxide in the mixed solution is 4 mol / L.

[0058] For the green cotton product treated in Example 3, the weight loss rate of the cotton product after desizing treatment is 5.29%, the gross value is 7.8 cm, and the whiteness is 68.0.

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Abstract

The invention relates to a supercritical fluid phase transfer catalytic desizing method for textiles, comprising the following steps: dissolving a phase transfer catalyst, a desizing agent and a desizing activator in a buffer solution with pH=5-12 to obtain a mixed solution; (1) The obtained mixed solution is placed in a high-pressure desizing reactor, and textiles to be treated are added, and the high-pressure desizing reactor is connected with a supercritical carbon dioxide fluid system, and supercritical fluid transfer catalytic desizing is carried out under airtight conditions deal with. The treatment method provided by the invention is convenient to operate, simple in process, low in energy consumption, and has the characteristics of ecological environment protection, energy saving and emission reduction, and the like.

Description

technical field [0001] The invention relates to the technical field of textile dyeing and finishing, in particular to a supercritical fluid phase transfer catalytic desizing method for textiles. Background technique [0002] Desizing is an important process in the pretreatment of textiles, and the degree of size removal directly affects the quality of subsequent fabric processing. At present, the sizing materials commonly used in industry mainly include starch, PVA and propylene. Traditional fabric desizing is mainly carried out in water, such as alkali desizing, acid desizing, oxidant desizing, and biological enzyme desizing. Alkaline desizing usually consumes a lot of water and heat energy, and the COD value of the treated wastewater is also high, which seriously pollutes the environment. Acid desizing usually cannot be used alone, and it will cause great damage to the strength of the fabric. Although bio-enzyme desizing technology is energy-saving and environmentally fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06L1/00D06B5/00
CPCD06B5/00D06L1/00D06B23/14
Inventor 龙家杰石伟
Owner SUZHOU UNIV