Process for recycling chinlon from waste chinlon blended fabric and recycled product

Abstract

The invention relates to the field of IPC D01G11/00, and in particular, relates to a process for recycling chinlon from waste chinlon blended fabric and a recycled product. The process comprises the following steps: extracting the waste chinlon blended fabric by using an organic extracting agent to obtain an extracting solution; reducing the temperature of the extracting solution, and collecting solids separated out in the cooling process; and purifying the collected solid to obtain a chinlon recycled product. According to the method, effective separation of chinlon and non-chinlon components in the chinlon blended fabric is realized by adopting the alcohol extractant, a pure textile product with high recycling rate is obtained, and the method has important significance on recycling of textiles (especially chinlon); a specific recycling device is matched with the extractant, separation is carried out while extraction is carried out, and the recycling efficiency is improved on the basis of a simple and practical process; in the recycling process, the organic solvent with high toxicity and high cost is abandoned, and a safe, environment-friendly, efficient and high-selectivity chinlon recycling process is realized.

Description

technical field [0001] The invention relates to the field of IPC D01G11 / 00, in particular to a process for recovering nylon from waste nylon blended fabrics and a recovered product. Background technique [0002] Nylon is the second largest synthetic fiber, second only to polyester in consumption. In order to improve the mechanical strength and skin-friendly properties of textiles at the same time, there are often other types of fibers blended with them in nylon textiles, such as polyester, spandex, cotton, etc. points of separation. At present, the recycling of nylon blended fabrics is mainly through extrusion and granulation after high-temperature melting of the screw. The quality of the recycled products obtained cannot be guaranteed. Most of them are low-grade products with low added value. Most of them are used in the field of low-end plastics, or as resins. The use of fillers; the current recycling rate of nylon blended fabrics is low, which is the bottleneck of techn...

AI Technical Summary

Problems solved by technology

This method realizes the separation of blended fabrics, but as far as the separated products are concerned, only the solid cotton yarn in the blended fabrics can be collected, and the polyester in the blended fabrics is completely alcoholysed under the action of the alcoholysis agent and catalyst, and cannot be recycled.

The existing technology still has the technical defects that the recovery rate of the target textile is low, the target textile in the blended fabric cannot be utilized, and the recovery rate of the fabric and the environmental protection of the operation are difficult to balance.

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