Contained separation system for FCC reaction downcomer

Details Contained separation system for FCC reaction downcomer Contained separation system for FCC reaction downcomer

1996-08-26

1998-12-01

Tran, Hien

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

422145, 422147, F27B 1508

Patent

active

058433775

ABSTRACT:
An FCC separation arrangement for a catalyst and hydrocarbon contacting zone having a downcomer terminus section uses a compact separation vessel to provide a quick separation between catalyst and hydrocarbon gases in a compact area that also accommodates the use of cyclone separators for a further removal of catalyst from the hydrocarbon gases. The separation system uses a gas collection conduit that incorporates an expansion element for accommodating differential growth between the riser separation vessel and cyclones in the same compact area. The system is suitable for single downcomers or multiple downcomers. The system can be used with a closed containment vessel or in an entirely open system that eliminates the use of a containment vessel.

REFERENCES:
patent: 3074878 (1963-01-01), Pappas
patent: 4385985 (1983-05-01), Gross et al.
patent: 4482451 (1984-11-01), Kemp
patent: 4514285 (1985-04-01), Niccum et al.
patent: 4778660 (1988-10-01), Haddad et al.
patent: 5344554 (1994-09-01), Pontier et al.
patent: 5449498 (1995-09-01), Cetinkaya

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