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

A reactive dye, anhydrous dyeing technology, applied in the field of textile printing and dyeing, can solve the problems of low solvent flash point, high cost, toxicity, etc., and achieve the effect of high dry rubbing fastness, high wet rubbing fastness, and avoiding environmental pollution.

Inactive Publication Date: 2016-01-13
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 poin

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 Shown is the diagram of the reactive dye anhydrous dyeing equipment for cotton cheese, the reactive dye anhydrous dyeing equipment for cotton cheese includes a main dyeing vat 1, and the main dyeing vat 1 is connected to an electric heating device 2 through a pipeline, and the electric heating device 2 is connected to the main dyeing vat 1. The heating device 2 is connected to the main pump 7 through the pipeline, and the main pump 7 is connected to the solvent storage device 3 and the dye solution dispensing device 11 through the pipeline, and the main dye vat 1 is connected to the condenser 10 through the pipeline, and the condenser 10 is connected through the pipeline The solvent storage device 3 and the dye liquor dispensing device 11, the main dye vat 1 is connected to the solvent separation device 6 through pipelines, and the solvent separation device 6 is connected to the solvent recovery device 4 through pipelines. The condenser 10 is connected ...

Embodiment 2

[0034] A kind of reactive dye anhydrous dyeing method of cotton cheese, adopts the reactive dye anhydrous dyeing equipment of cotton cheese described in embodiment 1, concrete steps are:

[0035] 500g pure cotton cheese (skimmed, bleached, 0.32g / cm 3 ) into the main dyeing vat 1, add 10L dimethyl sulfoxide, turn on the main pump 7, and heat up to 60° C. to swell for 2 hours. Discharge dimethyl sulfoxide to the solvent storage device 3, then add 15g of C.I. active red 24, 9g of tetramethylammonium hydroxide, 2L of dimethyl sulfoxide and 3L of dimethyl nylonate into the main dyeing vat 1 The formed dye liquor is heated to 90°C for cyclic dyeing for 2 hours, the flow rate of the dye liquor is 70L / kg·min, and the ratio of forward and reverse cycle time is: 1:1. After the dye liquor is cooled, it is separated by the gas-liquid separation device 5, The separated tetramethylammonium hydroxide, dimethyl sulfoxide and dimethyl nylon acid enter the gas storage device 8, and the separat...

Embodiment 3

[0037] A kind of reactive dye anhydrous dyeing method of cotton cheese, adopts the reactive dye anhydrous dyeing equipment of cotton cheese described in embodiment 1, concrete steps are:

[0038] 1kg pure cotton cheese (skimmed, bleached, 0.35g / cm 3) into the main dyeing vat 1, add 10L dimethyl sulfoxide, turn on the main pump 7, and heat up to 90° C. for 1 hour to swell. Discharge dimethyl sulfoxide to the solvent storage device 3, then add 30g C.I. reactive blue 19, 20g tetramethylammonium hydroxide, dimethyl sulfoxide 4L and diphenyl ether 4L to the main dye vat 1 The dyeing solution is heated to 90°C for cyclic dyeing for 3 hours, the flow rate of the dyeing solution is 80L / kg·min, and the ratio of forward and reverse cycle time is: 2:1. Tetramethylammonium hydroxide, dimethyl sulfoxide and dimethyl nylon acid enter the gas storage device 8, and the separated liquid is discharged into the dye liquor batching device 11, and dimethyl sulfoxide is added in the main dye vat 1...

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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 ...

Claims

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Application Information

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IPC IPC(8): D06B9/02D06B9/06D06P1/38D06P3/66
CPCY02P70/62
Inventor 陈支泽贾凯凯常悦
Owner DONGHUA UNIV
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