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. 19, 2016
Filed:
Apr. 11, 2013
Applicant:
Exxonmobil Research and Engineering Company, Annandale, NJ (US);
Inventors:
Bing Du, Fairfax, VA (US);
Alvin U. Chen, Reston, VA (US);
Christopher G. Smalley, Manassas, VA (US);
Kentaro Kobayashi, Tokyo-to, JP;
Masaaki Sugita, McLean, VA (US);
Assignee:
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY, Annandale, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G 11/18 (2006.01); G05D 23/22 (2006.01); G05D 23/00 (2006.01); G05D 23/30 (2006.01);
U.S. Cl.
CPC ...
C10G 11/187 (2013.01);
Abstract
A method of improving the uniformity of the contacting of a heavy oil feed with FCC cracking catalyst in the feed zone of an FCC cracking riser in which the heavy oil feed is injected into the catalyst in the riser by means of feed injectors located around the riser, the method comprising minimizing the differences in the temperature profile in the oil/catalyst mixture across the feed zone by varying the oil feed rate to the injectors.