Catalyst regeneration in a single stage regenerator converted to

Details Catalyst regeneration in a single stage regenerator converted to Catalyst regeneration in a single stage regenerator converted to

1991-04-29

1992-10-27

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

34 57A, 208113, 208164, 422144, 502 40, 502 42, 502 43, B01J 3832, B01J 3834, B01J 2120, C10G 1118

Patent

active

051589192

ABSTRACT:
A process and apparatus for fluidized bed catalyst regeneration. A mixture of spent catalyst, recycled hot regenerated catalyst and regeneration gas are charged to a riser having an outlet connective with a coke combustor immersed in a fluidized bed of catalyst. The coke combustor outlet is covered by the dense phase fluidized bed. Additional combustion air may be added to the fluidized bed of catalyst covering the coke combustor outlet for additional catalyst regeneration. Indirect heat exchange may heat spent catalyst in the riser and/or the coke combustor.

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patent: 4356082 (1982-10-01), Gross
patent: 4959334 (1990-09-01), Mauleon et al.
patent: 4991521 (1991-02-01), Green et al.

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