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

Claim 17:
18. A method of processing a gas oil in a fluid catalytic cracking (FCC) system, the method comprising:
cracking the gas oil into one or more hydrocarbon products in the presence of a catalyst in a reactor of the FCC system, thereby to cause one or more surfaces of the catalyst to be at least partially covered by coke so as to define a coked catalyst;
separating the coked catalyst from the one or more hydrocarbon products;
introducing a biomass-derived pyrolysis oil into one or more of: (a) a stripping zone of the reactor, or (b) a pipe that connects the reactor to a regenerator so as to supply the biomass-derived pyrolysis oil to the regenerator;
supplying the coked catalyst and the biomass-derived pyrolysis oil to the regenerator;
combusting the biomass-derived pyrolysis oil and the coke on the coked catalyst in the regenerator, thereby to produce a regenerated catalyst and a flue gas;
returning the regenerated 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.