Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Fluidized bed
Patent
1979-12-07
1981-08-25
Garris, Bradley
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Fluidized bed
422144, 422145, B01J 832, B01J 844, F27B 1508, F27B 1510
Patent
active
042859085
ABSTRACT:
A catalyst regeneration apparatus for the oxidation of coke from a spent catalyst, said coke being converted to CO, and for the conversion of the CO to CO.sub.2. Hot regenerated catalyst is recycled from a dense bed in the regeneration zone to mix with incoming spent catalyst in a mixer zone. The mixer zone operates in dense phase and is supplied with a relatively small amount of a fluidizing medium, preferably air. After the mixing of spent and fresh catalyst is substantially completed, a relatively large amount of a regenerating gas, preferably air, is admixed with the catalyst mixture, and some coke oxidation occurs. The balance of coke oxidation takes place in a downstream-situated regeneration zone of substantially conventional design. There is a transfer section connecting the mixer zone to the regeneration zone through which the relatively large amount of the regenerating gas is admitted. The transfer section is preferably a frustoconical surface, the horizontal cross section of smallest perimeter of which adjoins the outlet of said mixer zone, and regenerating gas addition is made at the base of the transfer section in order to provide a venturi effect which ensures good air-catalyst mixing.
REFERENCES:
patent: 2515156 (1950-07-01), Jahnig et al.
patent: 3707580 (1972-12-01), Anderson
patent: 3844973 (1976-09-01), Stine
patent: 3893812 (1976-09-01), Conner et al.
patent: 3909392 (1976-10-01), Horecky
patent: 4032305 (1977-06-01), Squires
Thompson Gregory J.
Vickers Anthony G.
Garris Bradley
Hoatson Jr. James R.
Morris Louis A.
Page II William H.
UOP Inc.
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