Spent-catalyst combustion regeneration process with recycle of h

Details Spent-catalyst combustion regeneration process with recycle of h Spent-catalyst combustion regeneration process with recycle of h

1977-10-27

1979-09-11

Douglas, Winston A.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

208113, 208120, 208164, 252419, 422223, B01J 2120, B01J 2938, C10G 1104, C10G 1118

Patent

active

041674928

ABSTRACT:
A catalyst regeneration process and apparatus for the oxidation of coke from a spent catalyst and for the conversion of CO resulting from the oxidation of coke to CO.sub.2.
Novel feature of the process is the combination of a vertical heat exchange zone and horizontal mixing zone in which a portion of regenerated catalyst produced in a coke oxidation zone and heated to a higher temperature in a CO-conversion zone and spent catalyst are heat exchanged and fresh regeneration gas is then added, to increase the temperature within the coke oxidation zone and to disperse the portion of hot regenerated catalyst, spent catalyst and fresh regeneration gas more evenly into and within that zone thereby increasing the rate, extent and evenness of coke and CO oxidation. The regeneration apparatus includes components by which this can be accomplished.

REFERENCES:
patent: 2487132 (1949-11-01), Hemminger
patent: 2526881 (1950-10-01), Kunreuther et al.
patent: 3821103 (1974-06-01), Owen et al.
patent: 3847793 (1974-11-01), Schwartz et al.
patent: 3893812 (1975-07-01), Zommer et al.
patent: 4035284 (1977-07-01), Gross et al.
patent: 4065265 (1977-12-01), Pulak

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