Method for depolymerizing, filtering and decolorizing polyester waste textiles

A polyester waste and polyester technology, which is applied in the field of polyester waste spinning, depolymerization, filtration and decolorization, can solve the problems of waste of land resources, secondary pollution, landfill or incineration, and cannot be directly reprocessed.

Inactive Publication Date: 2019-09-06
PLASTIC UNION NEW MATERIAL TECH HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As we all know, except for a very small amount of waste and old textiles that are used by people using physical methods, they can neither be reused nor directly reprocessed after recycling, and can only be used as landfills or incinerated.
Not only waste land resources but also cause secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] The polyester waste textiles are crushed into pieces of 100 mm in size and put into chemical reaction kettles.

Embodiment 2

[0011] Pour the glycerin residue of cracked polyester waste textiles into the reaction kettle, heat to 260-280°C and mix and stir for 1-2 hours until the polyester flakes are melted.

Embodiment 3

[0013] The melted PET solution is filtered to separate the insoluble matter in the liquid to obtain the PET solution.

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PUM

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Abstract

The invention discloses a method for depolymerizing, filtering and decolorizing polyester waste textiles. After the polyester waste textiles are depolymerized, plant fibers and other sundries are filtered away. A solution which is completely filtered becomes a pure colorless transparent liquid by separating toners and pigments in the solution under the high-speed rotation of a centrifuge. The method is one of key technologies in the chemical-method reducing process of the polyester waste textiles.

Description

technical field [0001] The invention discloses a method for depolymerizing, filtering and decolorizing polyester waste spinning. [0002] technical background [0003] As we all know, except for a very small amount of existing waste and old textiles that are used by people using physical methods, they can neither be reused nor directly reprocessed after recycling, and can only be landfilled or incinerated. Not only wasting land resources but also causing secondary pollution. Contents of the invention [0004] The purpose of the present invention is to overcome the defects of the above-mentioned background technology, fundamentally fully utilize polyester waste textiles to depolymerize and decolorize by chemical depolymerization, and realize high-value applications. [0005] In order to achieve the above object, the technical solution of the present invention is as follows: [0006] In the invention, after the polyester waste spinning is depolymerized, the sundries such as...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08J11/10C08L67/02
CPCC08J11/10C08J2367/02Y02W30/62
Inventor邓忠权邓军邓丽
OwnerPLASTIC UNION NEW MATERIAL TECH HUBEI