Enzyme treatment and recycling method for protein fibers in waste textiles

A technology for waste textiles and protein fibers, applied in fiber processing, biochemical fiber processing, textiles and papermaking, etc., can solve problems such as inability to distinguish soluble fiber components, difficulty in classifying dyes and blended fibers, and inability to fully recycle and dissolve fibers. To achieve the effect of full utilization, mild conditions and high selectivity
CN103556475AActive Publication Date: 2014-02-05浙江省轻工业品质量检验研究院
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
浙江省轻工业品质量检验研究院
Publication Date
2014-02-05
Patent Text Reader

Abstract

The invention relates to an enzyme treatment and recycling method for protein fibers in waste textiles. The provided method aims to effectively realize the recycling of the protein fibers in the waste textiles. According to the technical scheme provided by the invention, the enzyme treatment and recycling method for the protein fibers in the waste textiles sequentially comprises the following steps: (1) continually carrying out following treatment steps on the waste textiles containing the protein fibers; (2) adding oxidordeuctase into dyed textiles which are directly treated by a direct dye, an active dye, an insoluble azo pigment or a cationic dye, and carrying out pre-treatment; (3) adding protease into the waste textiles treated by the step (2), and carrying out selective degradation on the protein fibers; and (4) carrying out solid-liquid separation on a substance treated by the step (3); carrying out ultra-filtration separation on the protease in a degraded solution and reutilizing, wherein a degraded product is used for producing relative products; and physically recycling the residual solid textiles.
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Description

technical field

[0001] The invention belongs to the field of recycling waste textiles, and in particular relates to the degradation and recycling of protein fibers in waste textiles by using a protease treatment method. Background technique

[0002] With the improvement of living standards, consumers' demand and update speed for textiles are getting faster and faster, and a large amount of waste textiles are produced every year. According to the calculations of relevant experts, the total amount of leftover waste and household waste textiles produced by my country's textile industry in the production process exceeds 26 million tons every year. Waste textiles are "misplaced resources". Especially in the context of resource shortage, the recycling of waste textiles has attracted the attention of countries all over the world. However, my country's comprehensive utilization rate of waste textiles is very low, far behind the world's advanced level. Therefore, the "Twelfth Five-...

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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