Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Fluidized bed
Patent
1981-11-23
1983-08-09
Caroff, Marc L.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Fluidized bed
422214, F27B 1508
Patent
active
043978169
ABSTRACT:
Apparatus wherein spent, coked catalyst is admixed with combustion air externally of the regenerator and then introduced into the lower portion of a dense phase fluidized bed of said regenerator via an inlet. The inlet is characterized as an annulus, annular area or zone around a regenerated catalyst standpipe from which regenerated catalyst is removed from the regenerator and recycled to the reactor. Generally from about 3 percent to about 20 percent, preferably from about 5 percent to about 10 percent, of the total air introduced into the regenerator is introduced in this manner and balance of the air, which is in itself sufficient for complete combustion, is introduced via a separate air inlet into the regenerator. Disc and doughnut shaped gas distributors disposed within the annular inlet and a radial distributor plate disposed above the inlet provide a more even flow of the spent, coked catalyst into the regenerator with the result that the coke is burned from the catalyst in the lower portion of a dense phase fluidized bed and a flue gas of more constant composition is produced throughout the regenerator. Hydrocarbon contaminants from the reactor, not removed by stripping, are also effectively burned in the lower portion of the dense phase fluidized bed and as a result, the flue gas generated in this portion of the catalyst bed differs little from flue gas formed in other parts of the bed.
REFERENCES:
patent: 2382382 (1945-08-01), Carlsmith et al.
patent: 2394710 (1946-02-01), McAfee
patent: 2427112 (1947-09-01), Tyson
patent: 2451619 (1948-10-01), Hengstebeck et al.
patent: 2477345 (1949-07-01), Pelzer
patent: 2589124 (1952-03-01), Packie
patent: 2667448 (1954-01-01), Munday
patent: 3841843 (1974-10-01), Williams et al.
patent: 4272402 (1981-06-01), Mayes
Caroff Marc L.
Exxon Research and Engineering Co.
Proctor Llewellyn A.
LandOfFree
Apparatus for regeneration of spent cracking catalyst does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for regeneration of spent cracking catalyst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for regeneration of spent cracking catalyst will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-586641