Multi-stage regeneration of catalyst in a bubbling bed catalyst

Details Multi-stage regeneration of catalyst in a bubbling bed catalyst Multi-stage regeneration of catalyst in a bubbling bed catalyst

1992-12-30

1994-09-13

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208153, 502 42, 502 43, C10G 1100

Patent

active

053466101

ABSTRACT:
A process and apparatus for regeneration of spent FCC catalyst in a bubbling bed regenerator having a stripper mounted over the regenerator. Spent catalyst is regenerated in a fast fluidized bed coke combustor heated by direct contact heat exchange with catalyst recycled to the coke combustor via an internal "trough" trap. Catalyst recycle flow to the combustor is controlled by varying gas flow in the trough trap.

REFERENCES:
patent: 4118338 (1978-10-01), Gross et al.
patent: 4541921 (1985-09-01), Gross et al.
patent: 5034115 (1991-07-01), Avidan

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