Catalyst regeneration apparatus

Details Catalyst regeneration apparatus Catalyst regeneration apparatus

1981-03-02

1982-07-20

Garris, Bradley

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

422144, 422145, B01J 832, B01J 844, F27B 1508, F27B 1510

Patent

active

043405665

ABSTRACT:
A catalyst regeneration apparatus for the oxidation of coke from a spent catalyst, said coke being converted to CO, and for the conversion of the CO to CO.sub.2. Hot regenerated catalyst is recycled from a dense bed in the regeneration zone to mix with incoming spent catalyst in a mixer zone. The mixer zone operates in dense phase and is supplied with a relatively small amount of a fluidizing medium, preferably air. After the mixing of spent and fresh catalyst is substantially completed, a relatively large amount of a regenerating gas, preferably air, is admixed with the catalyst mixture, and some coke oxidation occurs. The balance of coke oxidation takes place in a downstream-situated regeneration zone of substantially conventional design. There is a transfer section connecting the mixer zone to the regeneration zone through when the relatively large amount of the regenerating gas is admitted. The transfer section is preferably a substantially horizontal surface having an outside perimeter intermediate the outside perimeters of the regeneration and mixer zones. Regeneration gas addition is made through multiple perforations in the transfer section.

REFERENCES:
patent: 3844973 (1974-10-01), Stine et al.
patent: 3893812 (1975-07-01), Conner et al.
patent: 3909392 (1975-09-01), Horecky, Jr. et al.

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