C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
252/17, 196/97
C10G 11/02 (2006.01) B01J 8/26 (2006.01) C10G 11/18 (2006.01)
Patent
CA 1055915
METHOD AND SYSTEM FOR REGENERATING FLUIDIZABLE CATALYST PARTICLES ABSTRACT A hydrocarbon conversion-catalyst regeneration operation is described which relies upon an upflowing fluid catalyst mass of decreasing particle density superimposed by an upflowing dispersed catalyst phase undergoing catalyst regeneration to effect elevated temperature regeneration of catalyst deactivated by hydrocarbonaceous material under conditions providing CO levels less than 0.15 mol percent in the flue gas. Regenerated catalyst is mixed with spent catalyst in a first contact zone to obtain an initial mix temperature of at least 1175°F. before contact with a second- ary oxygen containing regeneration gas stream as a part of the upflowing fluid catalyst mass. The ratio of hot regenerated catalyst to spent catalyst is restricted to obtain a mix temperature particularly promoting the combustion of hydro- carbonaceous material with oxygen containing gas in the up- flowing dense and dispersed catalyst phase so as to provide a discharged dispersed catalyst phase temperature of at least 1350°F.
226635
Mobil Oil Corporation
Na
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