Waste clothing recycling pre-treatment technology

A technology for pretreatment and clothing, applied in recycling technology, fiber treatment, decomposition of fiber-containing substances, etc., can solve the problems of poor quality of recycled fibers, limiting the recycling value and economic value of waste clothing, and low corporate profits. Oil pollution, good dyeing effect, good toughness effect

Active Publication Date: 2015-04-22
民勤县家兴节能服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires less investment and simple technology, but the quality of the regenerated fiber obtained is poor, and

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A pretreatment process for recycling and reusing cotton waste clothes includes the following specific steps:

[0021] ⑴ Place the cotton waste clothes in a sealed vacuum cabinet, inject ozone for disinfection and sterilization, and cut the disinfected waste clothes into pieces of 10mm×10mm.

[0022] ⑵The rags are sent to the recoil cleaning tank for cleaning. The temperature of the liquid in the recoil cleaning tank is controlled at 30-50°C. The liquid contains 0.4% sodium hydroxide, 0.8% ethylene glycol and 12% by mass. Alkyl amino propionic acid 0.3%;

[0023] ⑶ After cleaning, it is dried in an oven at 60℃ and ultrafinely pulverized into 50um particles. The ultrafine particles obtained are decolorized with 1.5% hydrogen peroxide, the decolorization temperature is 45℃, and ultrasonic treatment is carried out at the same time as the decolorization. The ultrasonic frequency is 40KHz. , Power 300W;

[0024] ⑷Soak the decolorized ultrafine particles in 4 times the weight of dime...

Embodiment 2

[0027] A pretreatment process for the recycling and reuse of hemp waste clothes includes the following specific steps:

[0028] ⑴Place the linen clothes in a sealed vacuum cabinet, inject ozone for disinfection and sterilization, and cut and break the sterilized waste clothes to remove buckles, and cut the broken cloth into pieces of 10mm×10mm;

[0029] ⑵The rags are sent to the recoil cleaning tank for cleaning. The temperature of the liquid in the recoil cleaning tank is controlled at 30-50°C. The liquid contains 0.3% sodium hydroxide, 0.7% ethylene glycol and 12% by mass percentage. Alkylaminopropionic acid 0.2%;

[0030] ⑶ After cleaning, it is dried in an oven at 60℃ and ultrafinely pulverized into 40um particles. The ultrafine particles obtained are decolorized with 1.2% hydrogen peroxide, the decolorization temperature is 42℃, and ultrasonic treatment is carried out at the same time as the decolorization. The ultrasonic frequency is 40KHz. , Power 300W;

[0031] ⑷Soak the deco...

Embodiment 3

[0034] A pretreatment process for recycling and reusing cotton and linen mixed waste clothes includes the following specific steps:

[0035] ⑴ Put cotton and linen mixed waste clothes in a sealed vacuum cabinet, inject ozone for disinfection and sterilization, and cut the sterilized waste clothes into pieces of 10mm×10mm.

[0036] ⑵The rags are sent to the recoil cleaning tank for cleaning. The temperature of the liquid in the recoil cleaning tank is controlled at 30°C. The liquid contains 0.2% sodium hydroxide, 0.6% ethylene glycol and dodecyl by mass percentage. Alanine 0.1%;

[0037] ⑶ After cleaning, it is dried in an oven at 60℃ and ultrafinely pulverized into 30um particles. The ultrafine particles obtained are decolorized with 1% hydrogen peroxide at a decolorization temperature of 40℃, and ultrasonic treatment is carried out at the same time as the decolorization. The ultrasonic frequency is 40KHz. , Power 240W;

[0038] ⑷Soak the decolorized ultrafine particles in 4 times th...

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PUM

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Abstract

The invention discloses a waste clothing recycling pre-treatment technology, and belongs to the technical field of renewable resources of textile. According to the technology, recycled waste clothing is disinfected, cleaned, decolorized and modified, and then the treated waste clothing capable of be applied to production of new materials directly is obtained, and efficient recycling of plant fiber resources is achieved.

Description

Technical field [0001] The invention belongs to the technical field of textile renewable resources, and specifically relates to a pretreatment process for the recycling and reuse of waste clothes. Background technique [0002] In developed countries and regions such as the United States, Japan, and Western Europe, textile recycling has not only become a commercial economic activity, but also belongs to an environmentally intimate eco-industry, so it is the most enthusiastically respected. The BIR organization conducted a study at the University of Copenhagen, Sweden in 2008, and concluded that every kilogram of waste textiles used can reduce carbon dioxide emissions by 3.6kg, save 6000L of water, and reduce the use of 0.3kg of fertilizers and 0.2kg of pesticides. The textile industry recycles a large amount of waste textiles, a trend compared with the processing and production of virgin materials, significantly reducing carbon dioxide emissions. Therefore, BIR calls on people: D...

Claims

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Application Information

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IPC IPC(8): D01G11/00
CPCY02W30/66D01G11/00
Inventor 许开强
Owner 民勤县家兴节能服务有限公司
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