Super critical CO2 fluid dyeing technology

A supercritical and fluid technology, applied in the field of dyeing technology, can solve the problems of lowering the dyeing uniformity of fabrics, lack of circulation function, slow dyeing speed, etc., and achieve the effect of improving the utilization rate of dyes, reducing energy consumption, and shortening the dyeing time.

Inactive Publication Date: 2005-11-09
NANTONG HUAAN SUPER CRITICAL EXTRACTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing foreign supercritical CO 2 Fluid dyeing test device, the supercritical fluid does not have the circulation function, but there is a stirring device in the dyeing kettle. In this method, the dye is dyed by supercritical CO 2 After the fluid is dissolved, it passes through the dyed fabric. This dyeing process is prone to dye deposition, which reduces the uniformity of fabric dyeing, low dyeing rate, and slow dyeing speed.

Method used

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  • Super critical CO2 fluid dyeing technology

Examples

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Embodiment Construction

[0015] like figure 1 As shown, the dyeing kettle and the dye kettle are connected through a circulation pump, a ball valve and corresponding pipelines, the outlet valve B (G) of the dyeing kettle is connected to the inlet of the circulation pump, the outlet of the circulation pump is connected to the valve C to the dye kettle (valve E), and the dye kettle The outlet valve D is connected with valve A (F) to the dyeing kettle for circulation.

[0016] 1. Forward circulation (diffusion from inside to outside of the active core of the dyeing kettle): circulation pump-→valve C→dye kettle→valve D→valve A→dyeing kettle→valve B→circulation pump.

[0017] 2. Reverse circulation (diffusion of the active inner core of the dyeing kettle): circulation pump→valve C→dye kettle→valve D-→valve F→dyeing kettle→valve G→circulation pump.

[0018] 3. Late circulation (when required by a specific process, the dye kettle does not participate in the circulation): circulation pump → valve E → valve A...

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Abstract

This invention discloses a supercritical carbon dioxide fluid dyeing technique. The carbon dioxide heated is suppressed into dye tank and mixed with the dye to form blending solution. Blending solution is pumped into dye tank after cycle. The solution is contacted to tissues in the tank, and then it is absorbed, dissolved, then twice again absorbed and dissolved, so the dyeing is finished. The rest blending solution after dyeing is pumped into separator through circulating pump, and then carbon dioxide and dye are separated. There is no assistant in all process, cost is saved, the carbon dioxide can be cycle used and no green house effect, the inhalation rate can reach 98%, and dyeing time is short. There is no need of reduction clearing after dyeing; the rest dyeing can be reverted to powder type, so the coloring utilization ratio can be increased.

Description

technical field [0001] The present invention relates to post-processing of fabrics, in particular dyeing techniques. Background technique [0002] Supercritical CO 2 The fluid dyeing device uses CO 2 It is a novel anhydrous dyeing device, and it is a green environmental protection industry. This process can also be used for natural fiber dyeing, not only for pre-treatments such as fabric desizing and removal of cellulose co-growth, but also for functional finishing of fabrics. Existing foreign supercritical CO 2 Fluid dyeing test device, the supercritical fluid does not have the circulation function, but there is a stirring device in the dyeing kettle. In this method, the dye is dyed by supercritical CO 2 After the fluid is dissolved, it passes through the dyed fabric. This dyeing process is prone to dye deposition, which reduces the uniformity of fabric dyeing, low dyeing rate, and slow dyeing speed. Contents of the invention [0003] The purpose of the invention is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/94
Inventor 金雪松
Owner NANTONG HUAAN SUPER CRITICAL EXTRACTION
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