Mineral oils: processes and products – Chemical conversion of hydrocarbons – Solids contacting and mixing
Patent
1989-01-03
1990-05-22
Caldarola, Glenn
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Solids contacting and mixing
208164, 422144, C10G 3500
Patent
active
049275275
ABSTRACT:
A method and apparatus for improving the stripping of hydrocarbons from catalyst particles in a fluidized catalytic cracking (FCC) unit. A stripper vessel is located directly adjacent the exhaust barrel of a separator and immediately begins stripping hydrocarbon from catalyst particles. The stripper is sealed at the catalyst exit by a catalyst seal pot, with the drain sized so as to permit only a portion of catalyst flow to pass therethrough, with the remainder catalyst overflowing the seal pot. The location of the stripper adjacent the separator exhaust and the provision of a catalyst seal pot, in other embodiments, can be combined either separately or together with a short contact time (SCT) stripper and/or a catalyst particle deflector in order to reduce the "residence" time of hydrocarbons with catalyst particles.
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Haddad James H.
Owen Hartley
Caldarola Glenn
McKillop A. J.
Mobil Oil Corporation
Speciale C. J.
Stone R. D.
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