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:
Jun. 19, 2012
Filed:
Jul. 17, 2007
Brian A. Cunningham, Ellicott City, MD (US);
Christopher G. Smalley, Manassas, VA (US);
Rathna P. Davuluri, Fairfax, VA (US);
Dana W. Nouri, McLean, VA (US);
Brian A. Cunningham, Ellicott City, MD (US);
Christopher G. Smalley, Manassas, VA (US);
Rathna P. Davuluri, Fairfax, VA (US);
Dana W. Nouri, McLean, VA (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
The present invention is an improved regenerated catalyst bend assembly for a fluid catalytic cracking unit. In a preferred embodiment, the reduced elevation ('RE-bend' or 'REL-bend') regenerated catalyst return line assembly of the present invention has an outlet elevation that is lower than the inlet elevation of the RE-bend or REL-bend regenerated catalyst return line assembly, and a process for utilizing the assembly in a fluid catalytic cracking unit. The present invention is especially useful in the modification of existing fluid catalytic cracking units to lower the elevation of the outlet of the regenerated catalyst return line assembly, thereby providing needed space to increase the fluid catalytic cracking reactor riser length.