Patent ID: 6837989

Claim:
A method for catalytically cracking feed comprising the continuous steps of: (a) injecting the primary feed into an FCC riser reactor having at least a first reaction zone and a second reaction zone upstream of the first reaction zone, the primary feed being injected into the first reaction zone; (b) cracking the primary feed in the first reaction zone under catalytic cracking conditions in the presence of a catalytically effective amount of a regenerated zeolite-containing catalytic cracking catalyst in order to form at least spent catalyst and a cracked product; (c) separating at least a cycle oil from the cracked product and then processing at least a portion of the cycle oil in the presence of a catalytically effective amount of a hydroprocessing catalyst under hydroprocessing conditions in order to form a hydroprocessed cycle oil containing at least about 50 wt. % decalins and less than about 10 wt. % total aromatics; (d) injecting the hydroprocessed cycle oil into the second reaction zone; and (e) cracking to hydroprocessed cycle oil under cycle oil catalytic cracking conditions in the presence of the catalytic cracking catalyst.