Patent · US Active

Method and system for treating waste plastic material

US12384972B2 · kind B2 · utility

0Cited by

2References

11Claims

0Family size

Assignees

Inventors

Mingfeng Li · Lo Wu, CN
Liang Zou · Beijing, CN
Zhiqiang Wang · South Glastonbury, US
Hongwei Li · Burnaby, CA
Xiaoli Wei · Beijing, CN
Guofu Xia · Beijing, CN
Run Xu · Jinan, CN
Shuqing Wang · Tangshan City, CN
Jili Hou · Beijing, CN
Pengfei Wang · Shanghai, CN

Key dates

Filing date	Jun 30, 2021
Grant date	Aug 12, 2025
Priority date	—
Expiry date	May 5, 2042

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/62
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method and system for pretreating waste plastics and a method and system for producing an automotive fuel from waste plastics are provided. The method for pretreating waste plastics includes the steps of: 1) contacting a waste plastic with a pretreating agent and a solvent oil for impurity removal; and 2) subjecting the effluent from step 1) to solid-liquid separation to obtain an insoluble material and an impurity-removed plastic-containing solution. The impurity-removed plastic-containing solution obtained by the method and system for pretreating waste plastics has very low metal content, chlorine content and silicon content.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.