Waterless dyeing device and dyeing method thereof by utilizing activated dye for cotton cone yarns

Abstract

The invention provides a waterless dyeing device and dyeing method thereof by utilizing activated dye for cotton cone yarns.The waterless dyeing device by utilizing activated dye for cotton cone yarns is characterized in that the waterless dyeing device comprises a main dye vat; the main dye vat is connected with an electric heating device by a pipeline; the electric heating device is connected with a main pump by a pipeline; the main pump is connected with a solvent storage device and a dye liquor distributor; the main dye vat is connected with a condenser by a pipeline; the condenser is connected with the solvent storage device and the dye liquor distributor by a pipeline; and the main dye vat is connected with a solvent separation device connected with solvent recovery devices by a pipeline. The waterless dyeing device and dyeing method thereof by utilizing activated dye for cotton cone yarns have following beneficial effects: waterless dyeing of purified cotton by utilizing organic solvents is achieved in order to avoid environmental pollution; utilized dyeing solvents featuring low toxicity, environment protection and high flash point, is above 80 DEG C in flash point; and there is no need to carry out anti-explosion operation on the dyeing device and place.

Description

technical field [0001] The invention belongs to the field of textile printing and dyeing, in particular to a reactive dye anhydrous dyeing system for cotton cheese and a dyeing method thereof. Background technique [0002] Traditional cotton cheese dyeing mainly uses water as the dyeing medium and reactive dyes as the main dyes. During the dyeing and cleaning process, a large amount of wastewater is generated, and a large amount of inorganic salt is added to promote dyeing during the dyeing process. At the same time, the reactive dyes are hydrolyzed, and the wastewater treatment is relatively difficult. Disaster. Dyeing under anhydrous conditions can fundamentally avoid the generation of dyeing wastewater. Such studies often use supercritical carbon dioxide and or weakly halogenated hydrocarbon solvents as dyeing media. The polarity of supercritical carbon dioxide and cellulose is quite different, and the dyeing effect of supercritical carbon dioxide as a medium for dyeing ...

AI Technical Summary

Problems solved by technology

However, in this invention, dimethyl sulfoxide will decompose when swelling cellulose, and disproportionation will occur to generate toxic dimethyl sulfone and dimethyl sulfide, resulting in waste gas and loss of solvent; solvents used such as n-hexane, dimethyl carbonate The boiling point is low, and their boiling points under normal pressure are 68°C and 90°C respectively, and high pressure is required for dyeing

The flash points of the solvents used are also low, and their flash points are -23°C and 17°C respectively. They are flammable and explosive chemicals. The equipment needs to be explosion-proof during dyeing, and the cost is expensive; the alkali used in the process is potassium carbonate, etc., which will exist after dyeing A large amount of salt residue is not easy to remove; and this patent has no solvent recovery system, and the entire production process does not seal solvent leakage; there is no corresponding organic solvent-resistant dyeing equipment

Images