Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Fluidized bed
Patent
1984-02-10
1987-09-08
Lacey, David L.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Fluidized bed
422147, 55261, 55426, F27B 1508, C10G 1118
Patent
active
046923110
ABSTRACT:
Catalyst and hydrocarbon vapors are separated in a cyclone zone attached to the discharge of a riser cracking operation. A vortex stabilizer separating the cyclone zone from a stripping zone allows stripping gas from the stripping zone to be passed upwardly into the cyclone zone countercurrent to the downward flow of catalyst, thereby improving the separation and stripping of gaseous hydrocarbons from separated catalyst. The combined cyclone-stripping zone reduces catalyst hydrocarbon contact time, thereby improving gasoline yield and olefin content, decreasing gas make, and reducing coke deposits.
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Bilgic A. Haluk
Dewitz Thomas S.
Gwyn John E.
Hardesty Donald E.
Hinds, Jr. George P.
Lacey David L.
Muller Kimbley L.
Shell Oil Company
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