FCC closed cyclone with snorkel

Details FCC closed cyclone with snorkel FCC closed cyclone with snorkel

2008-03-03

2010-02-23

Griffin, Walter D (Department: 1797)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

C422S139000, C422S144000, C422S145000, C096S372000, C096S378000, C055S345000, C055S349000, C055S459100

Reexamination Certificate

active

07666364

ABSTRACT:
Thermal cracking in a riser cracking, closed cyclone, fluidized catalytic cracking process is reduced. A snorkel or flow conduit having an inlet just above the catalyst stripper moves stripper vapor into the closed cyclone. The system preferably operates without a stripper cap, relying on fluid dynamics to isolate stripper vapor from upper parts of the vessel containing the riser outlet. Preferably the snorkel is at least partially supported by, and ideally is inside, the primary cyclone dipleg. Reduced residence time of stripper vapor in the vessel containing the stripper and the closed cyclone system reduces thermal cracking of stripper vapor.

REFERENCES:
patent: 4946656 (1990-08-01), Ross et al.
patent: 5039397 (1991-08-01), Haddad et al.
patent: 5279727 (1994-01-01), Helstrom et al.
patent: 5391289 (1995-02-01), Forde et al.
patent: 5518695 (1996-05-01), Goodspeed et al.
patent: 5681450 (1997-10-01), Chitnis et al.
patent: 7179428 (2007-02-01), Dries

Affiliated with

Also associated with

Rating

FCC closed cyclone with snorkel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with FCC closed cyclone with snorkel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FCC closed cyclone with snorkel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4210846