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Full-process cyclic dyeing system and process and application thereof

A dyeing system and full-process technology, applied in the field of energy saving and emission reduction in printing and dyeing, can solve problems such as waste, loss of resources, and increased processing difficulty, achieving high removal rate and reducing processing difficulty

Active Publication Date: 2019-12-24
ZHEJIANG SILK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, the printing and dyeing industry is also actively developing various resource recycling technologies, especially the recycling dyeing technology, which has made positive progress. However, most of the existing recycling dyeing technologies only recycle the wastewater from the dyeing process. However, In actual industrial production, the multi-channel washing process after dyeing is the place that consumes the most water. However, in the existing technology, the regeneration cycles of the subsequent washing processes are mostly collected and processed in a unified manner, which increases the processing to a large extent. Difficulty, especially the loss of various recyclable additives in the washing residue not only causes waste of resources, but also increases the cost of sewage treatment

Method used

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  • Full-process cyclic dyeing system and process and application thereof
  • Full-process cyclic dyeing system and process and application thereof
  • Full-process cyclic dyeing system and process and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] What this embodiment discloses is a kind of process that utilizes above-mentioned full-process cyclic dyeing system to carry out full-process cyclic dyeing of cotton textiles, and adopts reactive dyes to dye.

[0045] Ordinary dyeing process:

[0046] The dyeing prescription is: cotton fabric: 2kg, bath ratio 1:10, reactive black WNN: 6% (owf), sodium chloride: 60g / L, color-fixing alkali XA: 3g / L, soaping agent XA: 2g / L L; the dyeing process is: dyeing (60℃×60min)→neutralization (HAc:0.5g / L, 80℃×15min)→soaping (80℃×15min)→hot water washing (80℃×15min)→warm water washing (60℃×15min) → cold water washing (10min);

[0047] Recycling treatment:

[0048] After dyeing, the dyeing wastewater passes through the dye capture separator (molecular weight cut-off 1000 Daltons) to obtain dyeing circulating water and temporarily stores it in the dyeing pool for use. The membrane dye capture separator and the reverse osmosis membrane salt concentration separator are temporarily stor...

Embodiment 2

[0057] What this embodiment discloses is a kind of process that utilizes the above-mentioned full-process cyclic dyeing system to carry out full-process cyclic dyeing of polyester fabrics, and adopts disperse dyes for dyeing.

[0058] Ordinary dyeing process:

[0059] The dyeing prescription is: polyester fabric: 2kg, bath ratio 1:10, disperse black ECT: 3% (owf), HAc: 0.5g / L, high temperature leveling agent XA: 1g / L, reducing cleaning agent XA: 3g / L L; the dyeing process is: dyeing (1-2°C / min heating up to 130°C×45min, cooling down to 80°C)→reduction cleaning (80°C×15min)→hot washing (80°C×15min)→warm water washing (60°C ×15min) → cold water wash (10min);

[0060] Recycling treatment:

[0061] After dyeing, the dyeing wastewater passes through the extraction resin capture separator to obtain dyeing circulating water and temporarily stores it in the dyeing pool for use. The waste water from reduction cleaning, hot water washing, warm water washing, and cold water washing is ...

Embodiment 3

[0070] What this embodiment discloses is a kind of process that utilizes the above-mentioned full-process cyclic dyeing system to carry out full-process cyclic dyeing of acrylic yarn, and adopts cationic dyes for dyeing.

[0071] Ordinary dyeing process:

[0072] The dyeing prescription is: acrylic yarn: 2kg, bath ratio 1:10, cationic light gray: XGL golden 0.06% + XGRL red 0.04% + XBL blue 0.07% (owf), leveling agent 1227: 3g / L; The process is: dyeing (1-2°C / min heating up to 98°C×30min, cooling down to 80°C) → warm water washing (60°C×15min) → cold water washing (10min);

[0073] Recycling treatment:

[0074] After dyeing, the dyeing wastewater passes through the dyeing residue decolorization separator to obtain dyeing circulating water and temporarily stores it in the dyeing pool for use. The wastewater washed with warm water and cold water is respectively passed through the dyeing residue decolorization separator and the nanofiltration membrane salt concentration separato...

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Abstract

The invention discloses a full-process circulation dyeing system, which comprises a dyeing unit, a cleaning unit and a regeneration circulation unit; wherein the regeneration circulation unit comprises a dye capture separator, a salt concentration separator, a dyeing pool and a cleaning pool; based on the dyeing system, a textile is dyed by adopting a conventional dyeing process, and the wastewater in the dyeing process is captured and separated by the dye to obtain circulating water for dyeing, so that the circulating water is circularly used for next dyeing process; the wastewater in the processes of soaping, reduction cleaning, water washing and the like sequentially passes through a dye capture separator and a salt concentration separator respectively to obtain salt-free or low-salt-content colorless clear water, which is circularly used for next water washing process respectively. In the invention, all procedures are treated and circulated respectively from the source, so that themethod has the advantages of being simple, low in comprehensive cost, good in dyeing reproducibility, high in wastewater circulation rate, suitable for industrial application and the like.

Description

technical field [0001] The present invention relates to the field of printing and dyeing energy-saving emission reduction technology and process technology, and more specifically relates to a full-process cycle dyeing system and its process and application. Background technique [0002] The printing and dyeing industry is an important part of the textile industry. It is not only a key industry to improve product quality and increase product added value, but also an industry that consumes a lot of water, energy, and pollutants. In recent years, driven by the steady and rapid growth of the textile industry, printing and dyeing The industry has developed rapidly, but at the same time, it is increasingly restricted by resources and the environment. Energy conservation and emission reduction is an important measure to alleviate resource and environmental constraints, and an inevitable way to achieve sustainable development of the industry and transform the economic growth mode of...

Claims

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Application Information

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IPC IPC(8): C02F9/02C02F9/04D06B21/00D06B23/20C02F101/30C02F103/30
CPCD06B21/00D06B23/20C02F9/00C02F1/001C02F1/285C02F1/283C02F1/44C02F1/442C02F1/441C02F1/66C02F1/58C02F2103/30C02F2101/308Y02P70/62
Inventor 刘晓芸孙思恒吕晓辉叶建军姚庆才
Owner ZHEJIANG SILK TECH
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