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:
Sep. 01, 2026
Filed:
Mar. 09, 2020
China Petroleum & Chemical Corporation, Beijing, CN;
Zhejiang University, Hangzhou, CN;
Shanghai Research Institute of Chemical Industry Co. Ltd., Shanghai, CN;
Jingdai Wang, Hangzhou, CN;
Jingyuan Sun, Hangzhou, CN;
Zhengliang Huang, Hangzhou, CN;
Yongrong Yang, Hangzhou, CN;
Guodong Han, Tianjin, CN;
Wenqing Wu, Tianjin, CN;
Binbo Jiang, Hangzhou, CN;
Xiaofei Wang, Tianjin, CN;
Yao Yang, Hangzhou, CN;
Xiaofeng Ye, Shanghai, CN;
Zuwei Liao, Hangzhou, CN;
CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing, CN;
Zhejiang University, Hangzhou, CN;
SHANGHAI RESEARCH INSTITUTE OF CHEMICAL INDUSTRY CO. LTD., Shanghai, CN;
Abstract
The present application relates to an olefin polymerization method and system in the field of olefin polymerization. The method combines a supported dual catalysts with a series process, introduces a liquid material obtained after heat exchange and gas-liquid separation of a circulation gas flow into a separate first reactor to get into contact with the supported dual catalysts for polymerization reaction, and then introduces the reaction material and the first polyolefin generated by reaction into a second reactor to continue polymerization reaction, thereby enabling particles to circulate between first reactor and second reactor, improving mixing effect of two polyolefins with obvious differences in properties, avoiding the occurrence of phase separation, and facilitating the production of polyolefins with excellent performance. At the same time, ethylene gas is introduced into first reactor to further reduce the hydrogen/ethylene ratio, increase the molecular weight of polyethylene and improve the product performance.