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:
Apr. 23, 1991
Filed:
Mar. 19, 1990
Applicant:
Inventor:
Alan R Goelzer, Atkinson, NH (US);
Assignee:
Stone & Webster Engineering Corporation, Boston, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ; C10G / ;
U.S. Cl.
CPC ...
208113 ; 208 78 ; 208155 ; 502 43 ;
Abstract
An improved process and apparatus is provided for simultaneously, independently catalytically cracking dissimilar hydrocarbon feedstocks at elevated temperatures in separate riser reactors and under respective operating parameters which permit selective conversion to desired products, wherein catalyst regeneration is conducted in two steps comprising separate relatively lower and higher temperature regeneration stages.