Fluid catalyst regeneration process

Details Fluid catalyst regeneration process Fluid catalyst regeneration process

1980-06-15

1982-10-12

Konopka, P. E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

16510416, 208164, 252419, 422144, B01J 2120, C10G 1118, F27B 1508, B01J 2938

Patent

active

043538126

ABSTRACT:
A catalyst regeneration process and apparatus for the oxidative removal of coke from a coke contaminated fluid catalyst. The process comprises a high temperature coke combustion zone, a catalyst disengagement zone and an external heat removal zone comprising a shell and tube heat exchanger. Catalyst is cooled by passing it through the shell side of the heat exchanger with a cooling medium through the tube side. A mixture of coke contaminated catalyst, oxygen containing gas, and cool regenerated catalyst from the heat removal zone are contacted in the high temperature combustion zone, the temperature of which is controlled by adjusting the rate at which fluidizing gas is passed to the bottom portion of the shell of the heat exchanger which varies the degree of turbulence of the fluidized bed in the shell side and thus the heat transfer coefficient at the outside surface of the tubes which in turn varies the quantity of heat transferred to the cooling medium in the tubes.

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A.I.Ch.E. Journal, Dec. 1956, vol. 2, No. 4, pp. 482-488, "Fluidized-Bed Heat Transfer: A Generalized Dense-Phase Correlation", Wen et al.

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