Patent ID: 11970664
Assignee: MARATHON PETROLEUM COMPANY LP
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 9:
10. A method of processing a gas oil in a fluid catalytic cracking (FCC) system, the method comprising:
mixing the gas oil and steam with an FCC catalyst;
cracking the gas oil into one or more FCC hydrocarbon products in a reactor of the FCC system, thereby to cause one or more surfaces of the FCC catalyst to be at least partially covered by coke so as to define a coked FCC catalyst;
separating the coked FCC catalyst from the one or more FCC hydrocarbon products in a cyclone within the reactor;
supplying the coked FCC catalyst from the cyclone to a regenerator of the FCC system;
supplying a biomass-derived pyrolysis oil into the regenerator;
combusting a combination of the biomass-derived pyrolysis oil and the coke on the coked FCC catalyst in the regenerator, thereby to produce a regenerated FCC catalyst and a flue gas;
supplying the regenerated FCC catalyst to the reactor; and
adjusting an amount of the biomass-derived pyrolysis oil supplied to the regenerator based on a temperature within the FCC system, thereby to maintain sufficient temperatures within the FCC system to crack the gas oil in the reactor and to combust the coke in the regenerator.