Mineral oils: processes and products – Chemical conversion of hydrocarbons – Solids contacting and mixing
Patent
1993-09-24
1994-09-13
Breneman, R. Bruce
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Solids contacting and mixing
208113, 208127, 208163, C10G 3514, C10G 932, C10G 1118
Patent
active
053466136
ABSTRACT:
An FCC process decouples the circulation of catalyst on the regeneration side of the process from the circulation of catalyst on the reactor side of the FCC process by mixing the spent and regenerated catalyst from the reactor and regenerator side of the process in a common blending vessel that receives all of the spent and regenerated catalyst from the reactor and regenerator. The blending vessel supplies blended catalyst to raise the solids to oil ratio on the reaction side of the process and regulate catalyst temperatures on the reaction and the regeneration sides of the process. The blending vessel can also retain the majority of the catalyst inventory for both the reactor and regenerator sides of the process. Moreover, by the introduction of a stripping gas into the blending vessel it operates as a hot stripper to remove additional hydrocarbons from the blended catalyst that enters the regeneration zone. The blended catalyst also has a relatively high temperature that benefits the process by allowing rapid initiation of coke combustion in the regeneration zone.
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Lomas David A.
Wegerer David A.
Breneman R. Bruce
McBride Thomas K.
Tolomei John G.
UOP
Yildirim Bekir L.
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