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. 09, 1991
Filed:
Feb. 26, 1990
David A Pappal, Haddonfield, NJ (US);
Michael S Sarli, Haddonfield, NJ (US);
Mobil Oil Corporation, Fairfax, VA (US);
Abstract
An FCC catalyst regeneration technique in which the catalyst is regenerated in a dense bed regenerator. Regenerator effluent gases are collected from different parts of the regenerator vessel in a common collection zone and passed through the catalyst separation cyclones from the common collection zone. Removal of nitrogen oxides from the regeneration effluent gases is enhanced by passing spent cracking catalyst through the effluent gases from a secondary spent catalyst inlet in the upper part of the regeneration vessel. Coke on the spent catalyst effects a reduction of nitrogen oxide (NOx) species in the effluent gases to nitrogen.