Patent ID: 11905475
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method of processing a hydrocarbon feed comprising fractionating the hydrocarbon feed into a light stream, a middle stream and a heavy stream, wherein the light stream comprises hydrocarbons boiling at less than 200° C., the middle stream comprises hydrocarbons boiling at from 200° C. to 370° C., and the heavy stream comprises hydrocarbons boiling at greater than 370° C.; hydrotreating the heavy stream to form a hydrotreated heavy stream; feeding the light stream to a first Fluid Catalytic Cracking (FCC) reaction zone, thereby producing a light product stream comprising light olefins; feeding the middle stream to a second FCC reaction zone, thereby producing a middle product stream comprising olefins; and feeding the hydrotreated heavy stream to a third Fluid Catalytic Cracking (FCC) reaction zone, thereby producing a heavy product stream comprising light olefins; wherein each of the first and second FCC reaction zones operates under more severe operating conditions than the third FCC reaction zone.