Gas separation – With concentrate backflow or re-entrainment preventing means
Patent
1984-11-13
1987-03-31
Richman, Barry S.
Gas separation
With concentrate backflow or re-entrainment preventing means
208153, 208161, 422144, 422145, 422147, 422214, 55426, B04C 1100, B01J 824
Patent
active
046540601
ABSTRACT:
An apparatus for fluid catalytic cracking (FCC) wherein the output of a reactor riser zone is fed to a riser cyclone separator, a primary cyclone separator, and secondary cyclone separators, connected in series within a single reactor vessel. The riser cyclone separator is connected to the primary cyclone separator by a conduit, which prevents random post-riser thermal cracking of the hydrocarbons after they exit the riser cyclone separator. The conduit contains an annular port to allow stripping gas to enter the conduit to improve the separation of hydrocarbons from catalyst. Catalyst separated in the riser cyclone separator drops through a riser cyclone dipleg and passes through a dipleg seal which comprises a seal pot or catalyst held around the dipleg. The conduit is formed by two overlapping parts, one having a larger diameter than the other to form the annular port and packing or spacers may be used to align and space the overlapping parts.
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Haddad James H.
Owen Hartley
Schatz Klaus W.
Gilman Michael G.
Johnson William R.
McKillop Alexander J.
Mobil Oil Corporation
Richman Barry S.
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