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:
Jan. 07, 2025
Filed:
Sep. 16, 2020
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;
Xiaohong Li, Shanghai, CN;
Zhinan Yu, Shanghai, CN;
Li Wang, Shanghai, CN;
CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing, CN;
SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC, Shanghai, CN;
Abstract
The invention relates to a method for regulating the gas velocity of the empty bed in a fluidized bed, wherein solid catalysts are used as fluidized particles or as a part of fluidized particles, characterized in that the gas velocity of the empty bed μ of the reaction zone of the fluidized bed is measured, compared with the bed average catalyst density ρ of the solid catalysts in the reaction zone of the fluidized bed, the gas velocity of the empty bed μ being adjusted as required such that the gas velocity of the empty bed μ and the bed average catalyst density ρ satisfy the formula (I) below: ρ=0.356μ−4.319μ−35.57μ+M; wherein M=250−; where μ is provided in m/s and ρ is provided in kg/m. The method can be used for the industrial production of lower olefin.