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:
Mar. 24, 2026
Filed:
Mar. 12, 2021
China Petroleum & Chemical Corporation, Beijing, CN;
Shanghai Research Institute of Petrochemical Technology, Sinopec, Shanghai, CN;
Hongyuan Zong, Shanghai, CN;
Guozhen Qi, Shanghai, CN;
Jing Cao, Shanghai, CN;
Hongtao Wang, Shanghai, CN;
Zhinan Yu, Shanghai, CN;
Yijun Zheng, Shanghai, CN;
CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing, CN;
SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC, Shanghai, CN;
Abstract
The present invention relates to a process of converting methanol to olefins, comprising: feeding a feedstock comprising methanol to a fluidized bed reactor to contact with catalysts to produce an olefin product, wherein the process at least partially deactivates the catalysts to format least partially deactivated catalysts; feeding spent catalysts from the at least partially deactivated catalysts to a regenerator for regeneration, thereby forming regenerated catalysts, and returning the activated catalysts from the regenerated catalysts to the reactor via a regenerated catalyst line; characterized in that on the regenerated catalyst line, the oxygen content by volume in the gas phase component at the outlet of the regenerated catalyst line is controlled to be less than 0.1%, preferably less than 0.05%, and more preferably less than 0.01%.