Method for preparing dibutyl terephthalate through waste polyester fabric depolymerization purification+butanol

A technology of dibutyl terephthalate and waste textiles, which is applied in the preparation of carboxylic acid esters, chemical instruments and methods, and the preparation of organic compounds, and can solve the waste of land resources, secondary pollution, landfill or incineration, and inability Issues such as direct reprocessing
CN110423199AInactive Publication Date: 2019-11-08PLASTIC UNION NEW MATERIAL TECH HUBEI
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
PLASTIC UNION NEW MATERIAL TECH HUBEI
Publication Date
2019-11-08
Estimated Expiration
Not applicable Β· inactive patent
Patent Text Reader

Abstract

The invention discloses a method for preparing dibutyl terephthalate through waste polyester fabric depolymerization purification+butanol. A purified terephthalic acid monomer is prepared from a wastepolyester fabric through depolymerization and distillation purification, and butanol is added for esterification, and thus dibutyl terephthalate is prepared.
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Description

technical field

[0001] The invention discloses a method for preparing dibutyl terephthalate through depolymerization and purification of polyester waste textiles and butanol.

[0002] technical background

[0003] As we all know, except for a very small amount of existing waste 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 in order to overcome the defective of above-mentioned background technology, fundamentally completely eliminates this backward treatment mode, completely solves the second pollution.

[0005] In order to achieve the above object, the technical solution of the present invention is as follows:

[0006] The invention is to depolymerize and distill waste polyester waste textiles into pure terep...

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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