FCC processing scheme with multiple risers

Details FCC processing scheme with multiple risers FCC processing scheme with multiple risers

1985-04-08

1986-08-19

Metz, Andrew H.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 76, 208113, 208155, 208160, 208164, C10G 5102

Patent

active

046068104

ABSTRACT:
A novel FCC method and apparatus, wherein a fresh hydrocarbon feed of relatively poor crackability is fed to one riser of a two riser system. The spent catalyst from the other of the two risers is fed to the inlet of the first riser to produce relatively mild cracking conditions. Improved total gasoline plus distillate yields are achieved. The novel two riser system facilitates heat balancing of the system.

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