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:
May. 20, 2008
Filed:
Jun. 29, 2004
Chaogang Xie, Beijing, CN;
Jun Long, Beijing, CN;
Jiushun Zhang, Beijing, CN;
Zaiting LI, Beijing, CN;
Xieqing Wang, Beijing, CN;
Chaogang Xie, Beijing, CN;
Jun Long, Beijing, CN;
Jiushun Zhang, Beijing, CN;
Zaiting Li, Beijing, CN;
Xieqing Wang, Beijing, CN;
China Petroleum & Chemical Corporation, Beijing, CN;
Abstract
A catalytic conversion process for producing light olefins with a high yield from petroleum hydrocarbons, which comprises the steps of contacting a pre-heated petroleum hydrocarbons feedstock with a catalyst which comprises phosphorus and transition metal modified silica rich zeolite having a structure of pentasil in a riser or a fluidized bed reactor, and converting under the catalytic conversion conditions to produce reaction effluent and a spent catalyst, separating the resulted reaction effluent and spent catalyst, further separating said reaction effluent into liquid products and gaseous products comprising ethylene and propylene; stripping the spent catalyst by steam; regenerating the stripped catalyst by contacting the spent catalyst with oxygen-containing gas and burning off coke; and recycling the regenerated catalyst to reactor for reuse.