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:
Jul. 15, 2014
Filed:
Mar. 08, 2005
Jun Long, Beijing, CN;
Zhijian Da, Beijing, CN;
Dadong LI, Beijing, CN;
Xieqing Wang, Beijing, CN;
Xingtian Shu, Beijing, CN;
Jiushun Zhang, Beijing, CN;
Hong Nie, Beijing, CN;
Chaogang Xie, Beijing, CN;
Zhigang Zhang, Beijing, CN;
Wei Wang, Beijing, CN;
Jun Long, Beijing, CN;
Zhijian Da, Beijing, CN;
Dadong Li, Beijing, CN;
Xieqing Wang, Beijing, CN;
Xingtian Shu, Beijing, CN;
Jiushun Zhang, Beijing, CN;
Hong Nie, Beijing, CN;
Chaogang Xie, Beijing, CN;
Zhigang Zhang, Beijing, CN;
Wei Wang, Beijing, CN;
China Petroleum Chemical Corporation, Beijing, CN;
Research Institute of Petroleum Processing Sinopec, Beijing, CN;
Abstract
A process for producing light olefins and aromatics, which comprises reacting a feedstock with a catalytic cracking catalyst in at least two reaction zones, wherein the reaction temperature of at least one reaction zone downstream of the first reaction zone is higher than that of the first reaction zone and its weight hourly space velocity is lower than that of the first reaction zone. The spent catalyst is separated, from the reaction product vapor, regenerated, and then returned to the reactor. The reaction product vapor is separated to obtain the desired products, light olefins and aromatics. This process efficiently produces light olefins such as propylene, ethylene, etc from heavy feedstocks, wherein the yield of propylene exceeds 20% by weight, and produces aromatics such as toluene, xylene, etc at the same time.