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. 18, 1999
Filed:
Oct. 03, 1997
Yuichiro Fujiyama, Yokohama, JP;
Nippon Oil Co., Ltd., Tokyo, JP;
Petroleum Energy Center, Tokyo, JP;
Abstract
A process for the fluid catalytic cracking of oils, wherein an oil is brought into contact with catalyst particles using a fluid catalytic cracking reactor under the following conditions: a) a reaction zone outlet temperature of 580 to 630.degree. C., catalyst/oil ratio of 15 to 50 wt./wt., contact time of 0.1 to 3.0 sec.; b) a catalyst-concentrated phase temperature in the regenerating zone of 670 to 800.degree. C.; and c) a temperature of regenerated catalyst to be forwarded into the reaction zone of 610 to 665.degree. C.; thereby producing light fraction olefins. The process increases the cracking rate of heavy fractions of oils while producing a lessened amount of dry gases generated by the overcracking of light fractions to obtain light fraction olefins in a high yield.