Control method for direct-coupled FCC riser cyclone

Details Control method for direct-coupled FCC riser cyclone Control method for direct-coupled FCC riser cyclone

1993-11-22

1995-02-14

McFarlane, Anthony

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Solids contacting and mixing

208113, 208157, 208164, 208DIG1, C10G 1118

Patent

active

053892399

ABSTRACT:
In a direct-coupled cyclone system, the riser cyclone is positioned external to a containment vessel. The riser cyclone separator discharges separated catalyst to a catalyst stripper internal to the containment vessel. Means is provided for withdrawing stripping gas from the catalyst stripper and passing it under pressure control to the riser cyclone separator. The riser cyclone separator is inherently pressure stable relative to the catalyst stripper. The invention is particularly useful for retrofitting a direct-coupled cyclone separator to a preexisting containment vessel with limited free volume.

REFERENCES:
patent: 4288235 (1981-09-01), Gartside et al.
patent: 4433984 (1984-02-01), Gartside et al.
patent: 4502947 (1985-03-01), Haddad et al.
patent: 4623446 (1986-11-01), Haddad et al.
patent: 4737346 (1988-04-01), Haddad et al.
patent: 5248411 (1993-09-01), Chan

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