FCC process with spent catalyst recycle

Details FCC process with spent catalyst recycle FCC process with spent catalyst recycle

2011-03-15

2011-03-15

Griffin, Walter D (Department: 1774)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

C422S145000, C422S147000, C422S214000, C422S215000, C208S113000

Reexamination Certificate

active

07906077

ABSTRACT:
Disclosed is an FCC apparatus and process in which spent catalyst is recycled to the base of the riser to contact fresh feed through a passage disposed within the riser.

REFERENCES:
patent: 3888762 (1975-06-01), Gerhold
patent: 4853105 (1989-08-01), Herbst et al.
patent: 5372704 (1994-12-01), Harandi et al.
patent: 5552120 (1996-09-01), Sechrist et al.
patent: 5597537 (1997-01-01), Wegerer et al.
patent: 5858207 (1999-01-01), Lomas
patent: 6045688 (2000-04-01), Ruottu et al.

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