Patent ID: 8575410
Filing Date: 2013-11-05
Classification: B01J,C07C,C10G,Y02P

Abstract:
1. A process comprising: contacting cracking catalyst with a hydrocarbon feed stream to crack the hydrocarbons to cracked product hydrocarbons having lower molecular weight and deposit coke on the cracking catalyst to provide coked cracking catalyst; separating said coked cracking catalyst from said cracked products; adding oxygen to said coked cracking catalyst; combusting coke on said coked cracking catalyst with oxygen to regenerate said cracking catalyst; separating said cracked products to obtain a dilute ethylene stream comprising between about 5 and about 50 wt-% ethylene, between about 25 and about 55 wt-% methane and at least one impurity selected from the group consisting of at least about 0.1 wt-% carbon monoxide, at least about 1 wppm hydrogen sulfide, at least about 1 wppm ammonia, at least about 5 wt-% hydrogen and at least about 0.1 wt-% carbon dioxide; and contacting the dilute ethylene stream with a oligomerization catalyst comprising an amorphous silica-alumina base and a metal selected from the group consisting of Group VIII and Group VIB in the periodic table.