Fcc processing scheme with multiple risers

Details Fcc processing scheme with multiple risers Fcc processing scheme with multiple risers

C - Chemistry, Metallurgy

10

G

196/97

C10G 11/18 (2006.01) C10G 51/02 (2006.01)

Patent

CA 1268441

F-3374 Abstract of the Disclosure An FCC process wherein a fresh hydrocarbon feed of relatively poor crackability is mildly cracked in a first riser of a two riser system. Spent catalyst from the second riser is fed to the inlet of the first riser to produce relatively mild cracking conditions. A heavy fraction derived from the mildly cracked fresh feed is then vigorously cracked in the second riser, to produce spent catalyst and cracked product. Improved total gasoline plus distillate yields are achieved. The two riser system facilitates heat balancing the FCC process.

507530

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