Energy-saving and environmentally-friendly dyeing process

Abstract

The invention discloses an energy-saving and environmentally-friendly dyeing process, and relates to the technical field of cheese and warp beam dyeing and similar dyeing production. A dyeing beam isfirstly fixed in an inner cavity of a main cylinder through a creel and a creel base plate, and then is subjected to pretreatment, dyeing and post-treatment in sequence. According to the energy-savingand environmentally-friendly dyeing process, a water squeezing process is added at the last stage of dyeing; the moisture content of yarn is reduced to the maximum extent as much as possible by use of a pressure difference formed between the inside and the outside of the creel, that is, high-concentration dyeing liquid contained in the yarn is reduced as much as possible, so as to reduce the liquid rate and enhance the washing effect of washing and removing a dye from the surface of the yarn during post-treatment. The water squeezing process is added after washing or high-temperature washing,so that the energy-saving and environmentally-friendly dyeing process is applicable to a dyeing mode such as a cheese and a warp beam, and can fulfill the aims of reducing the consumption of compressed air, reducing the use amount of steam and reducing the use amount of water for dyeing post-treatment; therefore, energy conservation, consumption reduction, discharging reduction and environmentalprotection are achieved.

Description

technical field [0001] The invention relates to the technical field of textile dyeing and finishing, in particular to cheese, warp beam dyeing and similar dyeing production methods. Background technique [0002] The dyeing of cheese or warp beam is carried out in a closed high-temperature and high-pressure dyeing vat. In the traditional dyeing process, the pressure required for dyeing is first set in the initial part of the program, and the set pressure is maintained throughout the dyeing process. consumption is higher. In the stage of high-temperature water washing such as hot water washing and soaping, the conventional process setting is the whole-process temperature control method of heat preservation. In order to maintain the set constant temperature, this process needs to be automatically cooled when it is higher than the set temperature, and it is lower than the set temperature. When the temperature is set, the steam is automatically heated, and it goes back and forth...

AI Technical Summary

Problems solved by technology

In the high-temperature water washing stages such as hot water washing and soaping, the conventional process setting is the whole-process temperature control method of heat preservation. In order to maintain the set constant temperature, this process needs to be automatically cooled when it is higher than the set temperature, and it is lower than the set temperature. Automatic steam heating when the temperature is set, reciprocating back and forth, resulting in an increase in steam consumption

In the post-treatment process after the pre-treatment oxygen bleaching heat preservation and dyeing heat preservation, the conventional process is multiple washings, temperature-controlled water washing or soaping with additives to achieve the purpose of washing away floating colors and improving color fastness. The water consumption is high, and the post-treatment water consumption for dyeing of red, orange, green and other series of dyes with dark colors, extra dark colors and poor color fastness is especially high, which is also one of the environmental protection problems of the printing and dyeing industry with large sewage discharge. one

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