Patent ID: 11891581
Assignee: MARATHON PETROLEUM COMPANY LP
Field: Chemical engineering (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 5:
6. A method of catching spalled coke inside a petroleum product processing unit that refines a petroleum liquid, the method comprising:
operating a petroleum product processing unit having a coke catching device positioned proximate an outlet of the petroleum product processing unit, the coke catching device includes a bottom section disposed adjacent the outlet, a grid section connected to the bottom section and having a plurality of openings therein, and a top section connected to the grid section, the coke catching device also having a liquid fluid pathway through one or more of the plurality of openings in the grid section, through the bottom section, and into the outlet;
flowing the petroleum liquid having spalled coke therein through at least a portion of the petroleum product processing unit and into the coke catching device through the plurality of openings in the grid section thereof;
retaining large coke pieces on an outer side of the grid section, the large coke pieces defined as those coke pieces unable to easily fit through one or more of the plurality of openings of the grid section; and
permitting coke pieces that fit through one or more of the plurality of openings of the grid section to flow with the petroleum fluid along the liquid fluid pathway.