The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2025
Filed:
Jan. 25, 2024
Zhejiang University, Zhejiang, CN;
Zhejiang Juhua New Material Research Institute Co., Ltd., Zhejiang, CN;
Qiwei Yang, Zhejiang, CN;
Wenjun Zhang, Zhejiang, CN;
Qilong Ren, Zhejiang, CN;
Liyang Zhou, Zhejiang, CN;
Shuhua Wang, Zhejiang, CN;
Wei Qin, Zhejiang, CN;
Hongfeng Li, Zhejiang, CN;
Zhiguo Zhang, Zhejiang, CN;
Zongbi Bao, Zhejiang, CN;
Baogen Su, Zhejiang, CN;
ZHEJIANG UNIVERSITY, Zhejiang, CN;
ZHEJIANG JUHUA NEW MATERIAL RESEARCH INSTITUTE CO., LTD., Zhejiang, CN;
Abstract
Provided is a method for producing tetrafluoromethane through plasma pyrolysis of waste polytetrafluoroethylene (PTFE). The method includes: subjecting the waste PTFE to a plasma pyrolysis reaction to obtain a pyrolysis product, and subjecting the pyrolysis product to quenching and gas-solid separation in sequence to obtain a pyrolysis gas including the tetrafluoromethane, wherein the plasma pyrolysis reaction is performed at a temperature of 1,800 K to 5,000 K.