Patent ID: 7641787

Claim:
A process of reducing NO x emissions 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 NO x emissions are released from a regeneration zone of a fluid catalytic cracking unit (FCCU) operating under FCC conditions with a circulating inventory of an FCC cracking catalyst and a particulate NO x reduction catalyst/additive composition having a mean particle size of greater than 45 μm and comprising (i) at least 10 weight percent of a NO x reduction zeolite component selected from the group consisting of ZSM-11, beta, MCM-49, mordenite, MCM-56, Zeolite-L, zeolite Rho, errionite, chabazite, clinoptilolite, MCM-22, MCM-35, MCM-61, Offretite, A, ZSM-12, ZSM-23, ZSM-18, ZSM-22, ZSM-57, ZSM-61, ZK-5, NO, Nu-87, Cit-1, SSZ-35, SSZ48, SSZ-44, SSZ-23, Dachiardite, Merlinoite, Lovdarite, Levyne, Laumontite, Epistilbite, Gmelonite, Gismondine, Cancrinite, Brewsterite, Stilbite, Paulingite, Gooseereekite, Natrolite, omega or mixtures thereof, and (ii) from about 5 to about 50 weight percent of an inorganic binder selected from the group consisting of alumina, silica, silica alumina, alumina phosphate and mixtures thereof; and b) reducing the amount of NO x emissions released from the regeneration zone of the FCCU by at least 10% as compared to the amount of NO x emissions released in the absence of the particulate NO x reduction composition.