Heavy oil catalytic cracking process and apparatus

Details Heavy oil catalytic cracking process and apparatus Heavy oil catalytic cracking process and apparatus

C - Chemistry, Metallurgy

10

G

C10G 11/18 (2006.01)

Patent

CA 2058221

F-5942 HEAVY OIL CATALYTIC CRACKING PROCESS AND APPARATUS ABSTRACT A process and apparatus for fluidized catalytic cracking of heavy oils is disclosed using a modified high efficiency catalyst regenerator. A fast fluidized bed coke combustor, which is essentially free of gas/catalyst separation means, partially regenerates catalyst and discharges a steam laden flue gas and catalyst into a dilute phase transport riser. Closed cyclones separate catalyst from steam laden flue gas exiting the transport riser outlet. This flue gas is isolated from a second fluidized bed of catalyst maintained in a vessel containing the transport riser and closed cyclones. Coke combustion in the drier region of the second fluidized bed is possible. Catalyst deactivates less in the second fluidized bed because it is drier.

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