Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Fluidized bed
Patent
1989-03-17
1991-05-28
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Fluidized bed
422145, 422146, F27B 1500, F27B 1516, B01J 818
Patent
active
050193538
ABSTRACT:
A fluid catalytic cracking reactor system useful for regenerating and recycling hot cracking catalyst while utilizing thermal energy therefrom comprising: pressurized regenerator vessel for regenerating a coke-contaminated fluid cracking catalyst in a regeneration zone, maintaining oxidation regeneration temperature and receiving sufficient oxygen-containing regeneration gas to maintain a dense fluid bed of regenerator catalyst so as to regenerate the catalyst before recycling it to a fluid cracker; first valved conduit for withdrawing a controlled stream of regenerator catalyst from the regenerator vessel; dehydrogenation reactor in valved communication with the regenerator vessel, the dehydrogenation reactor having a dehydrogenation zone maintained at temperature below that in the regeneration zone, with the dehydrogenation reactor being located externally relative to the cracker and regenerator vessel; fluid handling for introducing a lower alkane feedstream into the dehydrogenation zone in an amount sufficient to maintain hot withdrawn catalyst in a state of fluidization in the dehydrogenation reactor while cracking catalyst is being cooled; second valved conduit for transporting cooled catalyst from the dehydrogenation zone to the regeneration vessel or fluid cracker; and a conduit for withdrawing an effluent stream from the dehydrogenation reactor.
Lower alkane conversion is an endothermic reaction, wherein the catalyst is autogeneously cooled before it is recirculated to the FCC regenerator.
REFERENCES:
patent: 2424147 (1947-07-01), Campbell
patent: 3821103 (1974-06-01), Owen et al.
patent: 3856659 (1974-12-01), Owen
Harandi Mohsen N.
Owen Hartley
McKillop Alexander J.
Mobil Oil Corporation
Santiago Amalia L.
Speciale Charles J.
Warden Robert J.
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