Supercritical CO2 anhydrous yarn warp dyeing system and dyeing method thereof

Abstract

The invention discloses a supercritical CO2 anhydrous warp beam dyeing system and a dyeing method thereof. The system comprises a CO2 pressure supply device, a circulating pump, a separation and recovery device and two or more than two dyeing kettles which are arranged in parallel, wherein the dyeing kettles are arranged in parallel and connected in series with the circulating pump to form a closed dyeing circuit; a shutoff valve is respectively arranged on both ends of the circulating pump; the CO2 pressure supply device and the separation and recovery device are connected between the shutoff valves and the dyeing kettles respectively; and an outlet of each dyeing kettle is connected with an independent recovery bypass which is communicated with the separation and recovery device and independent of the closed dyeing circuit which is formed by the dyeing kettles and the circulating pump, so that different dyeing kettles can perform dyeing and recovery of CO2 simultaneously. The system can perform dyeing and recovery of the CO2 simultaneously and respectively, reduces consumption of the CO2 to the maximum degree, reduces the cost, can realize discontinuous operation and improve the production efficiency, and has quick dyeing speed.

Description

technical field [0001] The patent of this invention relates to a textile dyeing and finishing system, more specifically, to a supercritical CO dyeing process for industrial production with a short cycle 2 Anhydrous beam dyeing system and dyeing method thereof. Background technique [0002] The traditional textile dyeing process requires dyes and various auxiliaries. The dyeing process consumes a lot of water and energy, and the waste water and discharge generated cause serious environmental pollution. Although the dyeing and finishing industry has taken a lot of measures to save water and reduce emissions, none of them can fundamentally improve the problem of environmental pollution. [0003] For this reason, a supercritical CO has been developed in the world 2 Dyeing method to replace the existing dyeing process, the supercritical CO 2 The dyeing method is to use CO 2 It is a novel anhydrous dyeing technology to replace the traditional water dyeing of synthetic fibers u...

AI Technical Summary

Problems solved by technology

[0007] The existing supercritical dyeing process of textiles is generally divided into multiple processes such as textile→dyeing→circulation→cleaning to remove residual dye→product, and there are also disadvantages such as many processes, long cycle, and difficulty in completely removing floating colors.

Among them, the long dyeing cycle means low efficiency and high cost, and the difficulty of removing floating color will affect the quality

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