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Environmentally friendly process for dying textiles

A kind of textile and environment-friendly technology, applied in the field of dyeing technology of environment-friendly textiles, can solve problems such as high COD value, difficulty in fabric cleaning, floating color and deep color Celsius, etc., and achieve the effects of saving costs, improving production technology, and reducing pressure

Inactive Publication Date: 2011-05-04
NANTONG A Z DYEING & TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Due to the variety of additives used in pre-treatment, the COD value is generally high, and the fabric is difficult to clean
Soaping agent has high COD value, many washing times and deep floating color after soaping, which puts great pressure on sewage treatment

Method used

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  • Environmentally friendly process for dying textiles
  • Environmentally friendly process for dying textiles
  • Environmentally friendly process for dying textiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, pre-dyeing treatment process

[0036] The special surfactant Noveco based on clay minerals is used instead of the commonly used additives: scouring degreaser, oxygen bleach stabilizer, bath softener. Noveco not only has multiple functions, but also has adsorption effect on dissolved organic matter in sewage, which can reduce COD and BOD in the process of water treatment.

[0037] The chemicals added during production are as follows:

[0038]

[0039]

[0040] The production process is:

[0041] Fill the dye vat with water to the requirement → put the fabric into the dye vat → add the agent as shown in the above table, the order is 321 → heat up to 95 degrees Celsius → keep warm for 50 minutes → cool down to 60 degrees Celsius → drain → water into the dyeing vat → heat up to 80 degrees Celsius and keep warm for 15 minutes → Cool down to 60 degrees Celsius and drain→water intake→acid wash at 50 degrees Celsius for 10 minutes→add 0.015% deoxygenase an...

Embodiment 2

[0044] Embodiment 2, dyeing

[0045] High-efficiency reactive dyes replace ordinary reactive dyes.

[0046] For dyeing at the same depth of temperature and color shade, the dye with high strength will use a small amount and have high lifting power; the dye with low strength will use a high amount and low lifting power, and when the dye dosage reaches a certain high temperature, it will exceed the fabric’s ability to absorb. At the maximum value, the dye will no longer be dyed on the fabric fiber, but will remain in the dye solution or float on the fabric surface. The remaining dye liquor will be discharged as waste water, and the dyes floating on the surface of the fabric will be finally discharged after repeated soaping, which will cause environmental pollution. On the contrary, the use of high-efficiency reactive dyes, small dosage, low chroma of dyeing residue, good fastness, and less soaping times, not only reduces the cost of the enterprise, but also reduces the discharg...

Embodiment 3

[0047] Embodiment 3, soaping

[0048] During the soaping process, high-efficiency, energy-saving and environmentally friendly soaping agents are used to reduce the number of soapings. High-efficiency, energy-saving and environment-friendly soaping agent is a compound based on enzyme preparations, which can catalyze and decompose reactive dyes that have been hydrolyzed or have not been fixed, remove floating colors more fully, and improve soaping efficiency. The general dosage is 0.3-0.5g / l.

[0049] The soaping production process is as follows in Table 1:

[0050]

[0051] The agents used for soaping are shown in Table 2:

[0052]

[0053] This process is 6 steps, which is two steps less than the 8 steps of the conventional process flow (see Table 1 above), saving water, electricity, etc., and improving production efficiency. At the same time, the enzyme complex decomposes the unstained dye, and the color is light in the soaped water bath (see figure 1 , 2 , 3), to ...

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Abstract

The invention provides an environmentally friendly process for dying textiles and relates to the field of textile dying. The process comprises the following steps of: pretreating; dying; and soaping, wherein in the step of pretreating, an all-in-one scouring agent is used, and the kinds of auxiliary agents are reduced, thus the COD (Chemical Oxygen Demand) value is reduced; and in the step of soaping, a composite enzymic preparation is used, so that the sewage chromaticity is reduced; therefore, the sewage can completely reach a discharge standard. The production process not only saves the cost of enterprises, the water and the energy, but also lightens the pressure on sewage discharge through improving the production processes of various links of printing and dying enterprises.

Description

technical field [0001] The invention relates to the field of textile dyeing and finishing, in particular to a dyeing process of environment-friendly textiles. Background technique [0002] As we all know, protecting the environment is everyone's responsibility. Printing and dyeing enterprises, as large dischargers of industrial wastewater, have a greater responsibility to reduce the pressure of wastewater pollution on the environment while ensuring excellent production efficiency. At present, the relevant indicators of the drainage of printing and dyeing enterprises in my country, such as COD value (chemical oxygen demand), BOD value (biochemical oxygen demand), chromaticity, content of suspended solids, etc., far exceed the specified value of the first-level standard, and discharge sewage up to the standard Dealing with stress. It is the trend of the situation to reduce the pressure of sewage treatment by improving the process! [0003] At present, the dyeing process of c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M11/79D06P1/38D06M16/00C12S11/00
Inventor 朱莉莉
Owner NANTONG A Z DYEING & TEXTILE
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