Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Fluidized bed
Patent
1987-08-26
1989-12-05
Richman, Barry S.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Fluidized bed
422145, 422146, 16510416, F27B 1516
Patent
active
048851388
ABSTRACT:
A process and apparatus for cooling FCC catalyst that provides two modes of operation for a remote heat exchanger type cooler. In the first mode the exchanger is operated in a backmix fashion where catalyst is circulated between the cooler and a disengagement zone. Regenerated catalyst is withdrawn from an outlet located close to the heat exchanger inlet so that essentially all of the heat removed by the cooler serves to reduce the temperature of catalyst entering the reaction zone. This mode of operation is particularly useful in obtaining a benefit from the cooler when processing light to moderate FCC feeds. In the second mode, the exchanger is operated in a flow through mode where hot catalyst is withdrawn from the disengaging zone cooled in the exchanger and passed into the combustion zone. The second mode of operation is used to withdraw heat from the overall regeneration process in the case of heavy FC feedstock conversion.
REFERENCES:
patent: 4424192 (1984-01-01), Lomas et al.
patent: 4425301 (1984-01-01), Vickers et al.
patent: 4438071 (1984-03-01), Vickers et al.
patent: 4483276 (1984-11-01), Lomas et al.
patent: 4698212 (1987-10-01), Walters et al.
Griffith Jr. D. John
McBride Thomas K.
Richman Barry S.
Tolomei John G.
UOP
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