Supercritical carbon dioxide printing and dyeing technology and system

Abstract

The invention discloses a supercritical carbon dioxide printing and dyeing technology and system. The supercritical carbon dioxide printing and dyeing technology comprises the steps that (1), liquid carbon dioxide is transformed into supercritical carbon dioxide; (2), the supercritical carbon dioxide is mixed with dye to form dye liquor; (3), the dye liquor is introduced into a dyeing kettle, andspindles from a spindle feeding end are dyed under the action of ultrasonic waves and bidirectional circulation; (4), the remaining dye liquor obtained after dyeing is collected, decompressed and separated, and the dye and the supercritical carbon dioxide which are obtained after separation are separately purified and dried to be recycled. The printing and dyeing technology and system have the advantages that no waste dyeing water or other wastes are generated, environment-friendly and clean production can be achieved, the economic benefits are high, and the environmental benefits are significant, and the aims of recycling, flowline production, improvement of the yield and reduction of industrial cost can be achieved.

Description

technical field [0001] The invention relates to the technical field of printing and dyeing, in particular to a supercritical carbon dioxide printing and dyeing process and a printing and dyeing system thereof. Background technique [0002] The existing supercritical carbon dioxide printing and dyeing process is only semi-continuous, and the dyeing kettle has no thermal insulation measures, resulting in a large amount of heat loss in the process; only a one-way circulation pump is configured in the dyeing process, resulting in the uniformity of product dyeing. Certain problems; the existing dyeing auxiliaries have not achieved the best dyeing effect; the existing supercritical carbon dioxide printing and dyeing process has not been effectively combined with the effect of ultrasound; the remaining dye liquor has not been recovered in a continuous cycle production Utilization, these factors cause the current supercritical carbon dioxide printing and dyeing process to be in a st...

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Problems solved by technology

[0002] The existing supercritical carbon dioxide printing and dyeing process is only semi-continuous, and the dyeing kettle has no thermal insulation measures, resulting in a large amount of heat loss in the process; only a one-way circulation pump is configured in the dyeing process, resulting in the uniformity of product dyeing. Certain problems; the existing dyeing auxiliaries have not achieved the best dyeing effect; the existing supercritical carbon dioxide printing and dyeing process has not been effectively combined with the effect of ultrasound; the remaining dye liquor has not been recovered in a continuous cycle production Utilization, these factors cause the current supercritical carbon dioxide printing and dyeing process to be in a state of low efficiency, high energy consumption, high cost, and low benefit, and there are problems of substandard product uniformity and lengthy equipment

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