05066627 is referenced by 8 patents and cites 10 patents.

A process for simultaneously heating and cooling of spent FCC catalyst during regeneration in a high efficiency FCC regenerator, one using a fast fluidized bed coke combustor. The coke combustor burns coke from spent catalyst in a turbulent or fast fluidized bed, and discharges catalyst and flue gas up into a dilute phase transport riser. Catalyst is separated into flue gas and a bubbling dense bed of catalyst. The coke combustor is heated by recycling hot catalyst from the bubbling dense bed and simultaneously cooled by a backmixed heat exchanger. Catalyst flows from the combustor to the cooler and is displaced back into the combustor by adding air to the catalyst in the cooler. Heating promotes rapid coke combustion, while cooling reduces thermal and hydrothermal deactivation of the spent catalyst. High superficial vapor velocities in the cooler promote heat transfer without disrupting flow in the fast fluidized bed coke combustor and without increasing catalyst traffic in the flue gas above the bubbling dense bed.

Title
Process for simultaneous heating and cooling a fast fluidized bed catalyst regenerator
Application Number
7/535459
Publication Number
5066627
Application Date
June 8, 1990
Publication Date
November 19, 1991
Inventor
Paul H Schipper
Wilmington
DE, US
Hartley Owen
Belle Meade
NJ, US
Agent
Richard D Stone
Charles J Speciale
Alexander J McKillop
Assignee
Mobil Oil Corporation
VA, US
IPC
C10G 11/18
B01J 38/32
B01J 38/38
B01J 21/20
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