C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/106
C10G 11/04 (2006.01) C10G 11/18 (2006.01)
Patent
CA 1185915
A B S T R A C T A catalytic cracking process unit wherein a gas oil feed is cracked in a cracking zone at an elevated temperature in the presence of a cracking catalyst, the cracking catalyst is regenerated in a regeneration zone by burning coke off the catalyst, and catalyst is circulated between the cracking zone and the regeneration zone. An improvement for obtaining a naphtha product of improved octane number includes introducing sufficient of a nickel and vanadium metals containing heavy feedstock with the gas oil feed introduced into the cracking zone to deposit nickel and vanadium metals on the catalyst and raise the nickel and vanadium metals-content of the catalyst to a level ranging from about 1500 to about 6000 parts per million of the metals expressed as equivalent nickel, based on the weight of the catalyst. The nickel and vanadium metals level on the catalyst is maintained by withdrawing high nickel and vanadium metals- containing catalyst and adding low nickel and vanadium metals- containing catalyst to the regeneration zone.
401803
Ashland Oil Inc.
Gowling Lafleur Henderson Llp
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