C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/124
C10G 11/18 (2006.01)
Patent
CA 1265762
"PROCESS AND APPARATUS FOR SIMULTANEOUSLY REGENERATING AND COOLING FLUIDIZED PARTICLES" ABSTRACT A process and apparatus for the simultaneous combustion of combustible material present on fluidized solid particles and controlled cooling of the resulting hot fluidized solid particles such as catalyst of an FCC petroleum refining process. The particles flow downward from a first dense phase fluidized bed into a cooling chamber and contact the shell side of a vertically oriented shell and tube heat exchanger where cooling occurs via indirect heat exchange with a cooling medium circulating in the tubes. The extent of cooling is controlled by the varying of the heat transfer coefficient between the tubes and particles in the heat exchanger. The coefficient is varied by changing the quantity of fluidizing gas fed to the fluidized bed in the heat exchanger. The heat exchanger is located within a lower portion of the cooling chamber totally below the particle inlet and outlet conduits. The heat exchanger can therefore be removed from service and protected by being buried under unfluidized relatively cool catalyst. The fluidizing gas supports combustion within a lower combustion zone.
503351
Cetinkaya Ismail Birkan
Myers Daniel Nohl
Macrae & Co.
Uop Inc.
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