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Production method for desizing and bleaching of gray cloth

A production method and gray cloth technology, applied in the direction of bleaching products, textiles, and papermaking, can solve the problems of large water consumption, high wastewater pollution, and high COD content in water quality, so as to reduce the cost of wastewater treatment, shorten the dyeing process, and reduce waste water. The effect of the emissions

Active Publication Date: 2013-07-03
CHANGXING HONGFENG PRINTING & DYEING
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AI Technical Summary

Problems solved by technology

[0002] The gray cloth needs to be desized and bleached before dyeing. The existing desizing and bleaching treatment only uses a large amount of caustic soda and hydrogen peroxide to desizing and bleach the gray cloth. The production process is long and the water consumption is large, which will generate a large amount of printing and dyeing wastewater. The pollution degree is very high, the wastewater contains a large amount of alkali, and the COD content of the water quality is high, which increases the processing cost of the enterprise, and the energy consumption is high. During the production process, the water needs to be heated, which consumes a lot of steam, electricity, and coal

Method used

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Embodiment Construction

[0016] A production method for gray cloth desizing and bleaching, comprising the following steps in sequence:

[0017] a). Feed: Inject water and gray cloth into the dyeing vat in sequence, and the ratio of the quality of the water to the gray cloth is 5:1;

[0018] b). Pre-bleaching: add desizing and bleaching agent I mixed in proportion to the dye vat after step a), and the quality of bleaching agent I added for every 1 ton of water added in step a) is 2Kg. The bleaching agent I includes biological enzymes and caustic soda, and the ratio of the mass of the biological enzymes to the mass of caustic soda is 7:1;

[0019] c). Preheating: After stirring the bleaching agent I treated in step b) evenly, the temperature in the dyeing vat is raised to 110°C, and the temperature in the dyeing vat is lowered to 85°C after keeping the temperature for 30 minutes;

[0020] d). Bleaching: add desizing and bleaching agent II mixed in proportion to the dyeing vat after step c), and the qua...

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Abstract

The invention relates to a production method for desizing and bleaching of a piece of grey cloth , which comprises the followings steps: feeding, prebleaching, preheating, bleaching, heating, and discharging, and has the advantages that the grey cloth is subjected to feeding, prebleaching, preheating, bleaching, heating, and discharging in sequence for production, and desizing and bleaching of the grey cloth are completed through a decolorizer I and a decolorizer II, so that the dyeing process can be effectively shortened, the fabric cleanliness is improved, wastewater treatment cost and wastewater discharge are effectively reduced, and the consumption of water, electricity, steam and coal is saved, so as to reduce the manufacturing cost.

Description

technical field [0001] The invention relates to a production method for gray cloth desizing and bleaching. Background technique [0002] The gray cloth needs to be desized and bleached before dyeing. The existing desizing and bleaching treatment only uses a large amount of caustic soda and hydrogen peroxide to desizing and bleach the gray cloth. The production process is long and the water consumption is large, which will generate a large amount of printing and dyeing wastewater. The pollution degree is very high, the wastewater contains a large amount of alkali, and the COD content of the water quality is high, which increases the processing cost of the enterprise, and the energy consumption is high. During the production process, the water needs to be heated, which consumes a lot of steam, electricity, and coal. Contents of the invention [0003] Technical Problems to be Solved by the Invention The desizing and bleaching of gray fabrics produces a large amount of printi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06L3/14D06L3/11D06L3/02D06L4/12D06L4/13
Inventor 袁淦堂
Owner CHANGXING HONGFENG PRINTING & DYEING
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