A process for stripping and regenerating fluidized catalytic...

Details A process for stripping and regenerating fluidized catalytic... A process for stripping and regenerating fluidized catalytic...

C - Chemistry, Metallurgy

10

G

C10G 11/18 (2006.01) B01J 38/16 (2006.01)

Patent

CA 2112133

2112133 9300673 PCTABScor01 A process is disclosed for achieving hot catalyst stripping of spent FCC catalyst in a bubbling bed regenerator (24) having a stripper (108) mounted over the regenerator and a stripped catalyst standpipe (26) within the regenerator. Hot catalyst stripping is achieved by lifting regenerated catalyst into the conventional stripper or to a secondary catalyst stripper under the primary stripper. Spent catalyst is heated by direct contact heat exchange with hot regenerated catalyst. Different types of lift gas, a light reactive hydrocarbon, air or an inert gas, and steam, may be used to transport catalyst from the regenerator to the hot stripper.

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