Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Reexamination Certificate
2006-07-18
2006-07-18
Griffin, Walter D. (Department: 1764)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
C422S145000, C422S147000, C422S213000, C422S214000, C208S113000, C208S04800Q
Reexamination Certificate
active
07077949
ABSTRACT:
A fluidized catalytic cracking reactor vessel having at its upper end means to separate catalyst particles from an effluent of a dilute phase fluidized catalytic cracking reactor riser, which separation means are fluidly connected to the downstream part of the reactor riser, fluidly connected with means to discharge the cleaned reactor riser effluent from the vessel and fluidly connected to means to discharge the separated catalyst to the lower end of the vessel, the vessel further having at its lower end means to discharge catalyst from the reactor vessel, wherein (a) between the side wall of the vessel and the separation means a shield is present, resulting in an exterior space between the vessel wall and the shield and an interior space within the shield, wherein the interior space is in open communication with the lower end of the reactor vessel at its lower end and wherein the exterior space and interior space are fluidly connected by means of one or more openings; and (b) means are present to supply a gas poor in coke precursors to the exterior space.
REFERENCES:
patent: 4404095 (1983-09-01), Haddad et al.
patent: 4961863 (1990-10-01), Van Den Akker et al.
patent: 5328592 (1994-07-01), Hedrick
patent: 5665949 (1997-09-01), Fusco et al.
patent: 18 10 593 (1970-06-01), None
patent: 24 19 184 (1975-11-01), None
patent: 24 45 460 (1976-04-01), None
patent: 28 22 104 (1979-11-01), None
patent: 43 28 811 (1994-10-01), None
patent: 195 26 504 (1996-07-01), None
patent: 0 139 390 (1985-05-01), None
patent: 0 643 122 (1995-03-01), None
Joseph W. Wilson. “Fluid Catalytic Cracking Technology and Operations”. PennWell Publish Co. Tulsa. 1997, pp. 104-112.
Bakker Ernst Antonius
Bridger David John
Dirkse Hendricus Arien
Fowler Stephen Brian
Griffin Walter D.
Shell Oil Company
Stewart Charles W.
LandOfFree
FCC reactor vessel 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 reactor vessel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FCC reactor vessel will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3539044