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

196/106

C10G 11/18 (2006.01) B01J 8/18 (2006.01) B01J 38/12 (2006.01)

Patent

CA 2029909

F-5334 ABSTRACT OF THE DISCLOSURE A fluidized catalytic cracking process and apparatus operates with a two stage hot stripper between the reactor and catalyst regenerator. Addition of hot, regenerated catalyst to spent catalyst from the reactor heats the spent catalyst in the first stripping stage, which preferably uses steam stripping gas. The second stage of stripping occurs about a heat removal means, such as a stab-in heat exchanger tube bundle, which removes heat from the catalyst during the second stage of stripping. Steam or flue gas may be used in the second stripping stage to fluidize catalyst, improve heat transfer and simultaneously strip the catalyst.

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