Converted FCC bubbling bed regenerator

Details Converted FCC bubbling bed regenerator Converted FCC bubbling bed regenerator

2005-12-30

2010-06-29

Griffin, Walter D (Department: 1797)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

C422S144000, C502S042000, C502S043000

Reexamination Certificate

active

07744744

ABSTRACT:
An apparatus and process for regenerating cracking catalyst may include a regenerator, a distributor penetrating the bottom of the regenerator, a spent catalyst conduit, a return standpipe, and a recirculating standpipe, wherein the return standpipe and the recirculating standpipe are connected to the upper half of the regenerator. An apparatus for regenerating cracking catalyst may include a spent catalyst standpipe and a recirculation standpipe positioned on an inner side of the regenerator vessel.

REFERENCES:
patent: 3893812 (1975-07-01), Conner et al.
patent: 4035284 (1977-07-01), Gross et al.
patent: 4051069 (1977-09-01), Bunn et al.
patent: 4197189 (1980-04-01), Thompson et al.
patent: 4272402 (1981-06-01), Mayes
patent: 4430300 (1984-02-01), Vickers
patent: 4917790 (1990-04-01), Owen
patent: 4965232 (1990-10-01), Mauleon et al.
patent: 5158919 (1992-10-01), Haddad et al.

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