Patent ID: 7976697

Claim:
A process of reducing the content of NO x emissions and gas phase reduced nitrogen species released from the regeneration zone during fluid catalytic cracking of a hydrocarbon feedstock into lower molecular weight components, said process comprising (A) contacting a hydrocarbon feedstock during a fluid catalytic cracking (FCC) process wherein a regeneration zone of a fluid catalytic cracking unit (FCCU) is operated in a partial or incomplete combustion mode under FCC conditions, with a circulating inventory of (1) a Y-type zeolite FCC cracking catalyst and (2) an effective gas phase reduced nitrogen species reducing amount of a particle NO x reduction composition having a particle size greater than 45 μm and consisting of (a) a zeolite component having (i) a pore size ranging from about 2 to about 7.1 Angstroms and (ii) a SiO 2 to Al 2 O 3 molar ratio of less than 500, wherein the zeolite component is optionally exchanged with at least one stabilizing metal selected from the group consisting of Groups 1B, 2A, 3B, 4B, B, 6B, 7B, 2B, 3A, 4A, 5A, and the Lanthanide Series of The Periodic Table, nickel, iron, cobalt and mixtures thereof; (b) at least one noble metal selected from the group consisting of platinum, palladium, rhodium, iridium, osmium, ruthenium, rhenium and mixtures thereof; and (c) an inorganic binder; (d) optionally, clay; (e) optionally, a matrix material selected from the group consisting of alumina, silica, silica-alumina, yttria, lanthana, ceria, neodymia, samaria, europia, gadolinia, titania, zirconia, prasedoymia and mixtures thereof; and (f) optionally, an additional zeolite; and (B) reducing the content of NO x emissions an gas phase reduced nitrogen species released from the regeneration zone during the fluid catalytic cracking process.