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PET recycling process

A process and technology of plastic fragments, applied in the field of PET recycling process, can solve the problems of affecting performance, easy to mix together, etc., and achieve the effect of improving purity, reducing impact, and convenient and efficient separation

Inactive Publication Date: 2016-02-03
ANHUI KAIFENG PLASTIC MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For polyvinyl chloride (PVC) and polyethylene terephthalate (PET) plastics, they are usually used to make beverage bottle materials, and their physical properties are similar, and the recycling process is easy to mix together; PVC is mixed with a small amount of A very small amount of PVC mixed into PET or PET will seriously affect the performance of the two after recycling.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Concrete technical scheme steps of the present invention are as follows:

[0028] (1) Feeding: put the reclaimed PET bottle on the conveyor belt, and remove packing belt and scrap iron wire during the feeding process;

[0029] (2) screening: the PET bottle transported in the step (1) is removed plastic sheet, PVC bottle, label, PE bottle cap, stone impurity in screening area, only stays white PET bottle;

[0030] (3) wet pulverization: put the white PET bottle screened in step (2) into the wet pulverizer, the PET bottle is broken into plastic fragments of different sizes, and the waste water is transported to the water treatment system;

[0031] (4) Gravity rinsing: The PET plastic fragments from step (3) mixed with bottle caps are transported to a cleaning bucket, and clean water is injected into the cleaning bucket. Under the buoyancy of water, the density of the bottle caps is higher than that of PET plastics. The density of the fragments is small, the bottle caps f...

Embodiment 2

[0041] Concrete technical scheme steps of the present invention are as follows:

[0042] (1) Feeding: put the reclaimed PET bottle on the conveyor belt, and remove packing belt and scrap iron wire during the feeding process;

[0043] (2) screening: the PET bottle transported in the step (1) is removed plastic sheet, PVC bottle, label, PE bottle cap, stone impurity in screening area, only stays white PET bottle;

[0044] (3) wet pulverization: put the white PET bottle screened in step (2) into the wet pulverizer, the PET bottle is broken into plastic fragments of different sizes, and the waste water is transported to the water treatment system;

[0045] (4) Gravity rinsing: The PET plastic fragments from step (3) mixed with bottle caps are transported to a cleaning bucket, and clean water is injected into the cleaning bucket. Under the buoyancy of water, the density of the bottle caps is higher than that of PET plastics. The density of the fragments is small, the bottle caps f...

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PUM

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Abstract

The invention discloses a PET recycling process. Characteristics that PET and PVC have different solubilities in specific solvents are used; and under the action of a specific solvent, PVC impurities are dissolved, and filter residues are dried, so that a pure PET plastic is obtained. The purity of the PET plastic is effectively improved, and at the same time, a recycled PVC plastic with high-purity can serve as a byproduct.

Description

technical field [0001] The invention relates to the field of plastic processing machinery, in particular to a PET recycling process. Background technique [0002] Plastic is a general term for daily necessities and industrial products processed from plastic as the main raw material. Due to the mass production, consumption and short use cycle of plastics, the amount of plastic waste has increased dramatically. A large amount of plastic waste not only causes a huge waste of resources, but also brings great harm to the environment: polluting the soil and oceans, and incineration to produce a large amount of toxic substances. Under the new situation of increasingly prominent energy problems and increasingly severe environmental problems, the research on strengthening the recycling of waste plastics has attracted great attention from governments of various countries. The recycling of waste plastics includes three stages: collection, sorting, and recycling. At this stage, the bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B17/00
CPCY02W30/62C08J2327/06C08J11/08C08J2367/02
Inventor 张文德
Owner ANHUI KAIFENG PLASTIC MACHINERY