Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including solid – extended surface – fluid contact reaction...
Patent
1992-01-27
1994-01-11
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including solid, extended surface, fluid contact reaction...
208140, 208165, 208173, 422218, 422219, 422220, 422223, 422239, B01J 812
Patent
active
052778800
ABSTRACT:
Apparatus for regenerating spent hydrocarbon conversion catalyst. Catalyst particles in a vertically-elongated movable tapered bed are contacted with a hot oxygen-containing gas stream in order to remove, by means of combustion, coke which accumulated on the catalyst particles while they were used in a hydrocarbon conversion zone. Catalyst moves downward under the influence of gravity. The catalyst bed is tapered such that the thickness of the bed, in a dimension which is transverse to the direction of catalyst movement, varies from a minimum at the top of the tapered bed to a maximum at the bottom of the tapered bed. Gas passes through the tapered bed in a direction which is substantially transverse to the direction of catalyst movement. Substantially, all of the catalyst in the bed is in contact with the flowing gas. The variation in bed thickness causes a varying gas flow rate through the bed, from a maximum flow rate at the top of the tapered bed to a minimum flow rate at the bottom of the tapered bed and reduces the time that catalyst is exposed to high temperature gases. This flow pattern results in the delivery of oxygen in a manner which more closely matches the oxygen requirement for combustion at each point in the tapered bed. Advantages of the invention include increased coke burning capacity and longer catalyst life. Catalytic reforming is an example of a hydrocarbon conversion process in which the invention may be advantageously employed.
REFERENCES:
patent: 2614033 (1952-10-01), Cornell et al.
patent: 2671057 (1954-03-01), McClure
patent: 3647680 (1972-03-01), Greenwood et al.
patent: 3652231 (1972-03-01), Greenwood et al.
patent: 3692496 (1972-09-01), Greenwood et al.
patent: 3716969 (1973-02-01), Maeda
patent: 3745112 (1973-07-01), Rausch
patent: 3838038 (1974-09-01), Greenwood et al.
patent: 3978150 (1976-08-01), McWilliams, Jr.
patent: 4333751 (1982-06-01), Iwamura et al.
patent: 4349362 (1982-09-01), Tanaka et al.
patent: 4438288 (1984-03-01), Imai et al.
patent: 4506032 (1985-03-01), Imai et al.
Koves William J.
Sechrist Paul A.
McBride Thomas K.
Santiago Amalia
Tolomei John G.
UOP
Warden Robert J.
LandOfFree
Catalyst regeneration apparatus with radial flow distribution does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catalyst regeneration apparatus with radial flow distribution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst regeneration apparatus with radial flow distribution will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1629342