Patent ID: 11965133
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  B | IPC C

Claim 10:
11. A method of processing a hydrocarbon feedstock, the method comprising:
catalytically cracking a hydrocarbon feed stream in a counter-current reactor to produce a first effluent stream;
processing a portion or all of the first effluent stream by at least one or more separations to form at least:
a second effluent stream comprising at least 95 wt. % C4-C6 hydrocarbons; and
a third effluent stream comprising at least 95 wt. % of ethane, propane, or a combination thereof;
passing a portion or all of the second effluent stream to the counter-current reactor;
steam cracking a portion or all of the third effluent stream to form a steam cracked effluent stream; and
combining a portion or all of the steam cracked effluent stream with the first effluent stream;
wherein one or more of:
(1) the hydrocarbon feed stream is a mixture of crude oil and steam;
(2) the method of processing the hydrocarbon feedstock further comprises steam cracking the fourth effluent stream to form a second steam cracked effluent stream, and passing the second steam cracked effluent stream to the counter-current reactor; or
(3) the counter-current reactor comprises an upper reaction zone and a lower reaction zone, the upper reaction zone operates with a counter-current plug flow regime, and the lower reaction zone operates with a dense bed fluidization regime.