CPC C10G 11/182 (2013.01) [C10G 11/187 (2013.01); C10G 2300/1011 (2013.01); C10G 2300/1074 (2013.01); C10G 2300/202 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4043 (2013.01); C10G 2300/708 (2013.01); C10G 2400/04 (2013.01)] | 20 Claims |
1. A method for operating a fluid catalytic cracking reaction system, comprising:
exposing a hydrocarbonaceous feed to a catalyst in a reactor under fluid catalytic cracking conditions comprising a temperature of 535° C. or less and 20 wt % to 65 wt % conversion of compounds with boiling points of more than 221° C. to compounds with boiling points of 221° C. or less, to form one or more liquid products and coke associated with the catalyst, the one or more liquid products comprising 25 wt % or more of a diesel boiling range fraction relative to a weight of the hydrocarbonaceous feed;
passing at least a portion of the catalyst and the associated coke into a regenerator;
passing a supplemental fuel into the regenerator, a vessel associated with the regenerator, or a combination thereof, a ratio of an adjusted weight of a low carbon intensity fraction of the supplemental fuel to a weight of the associated coke being 0.01 or more;
combusting, in the regenerator, the vessel associated with the regenerator, or the combination thereof, at least a portion of the associated coke and at least a portion of the supplemental fuel to form at least heated catalyst and CO2; and
passing at least a portion of the heated catalyst into the reactor.
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