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. 03, 1994
Filed:
Sep. 18, 1992
Applicant:
Inventors:
Catherine L Markham, Glen Mills, PA (US);
Gregory P Muldowney, Glen Mills, PA (US);
Assignee:
Mobil Oil Corporation, Fairfax, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208113 ; 208152 ; 2082 / ; 502 42 ;
Abstract
A process and apparatus for fluidized bed regeneration of FCC catalyst are disclosed. Oxides of nitrogen (NO.sub.x) emissions from an FCC regenerator operating in complete CO combustion mode, and hydrothermal catalyst deactivation, are reduced by reducing the average bed temperature. Dilute phase afterburning superheats catalyst entrained in the dilute phase region above the fluidized bed. Cyclone separators recover superheated, entrained catalyst and preferentially recycle this catalyst to the FCC reactor, permitting cooler operation of the dense phase fluidized bed.