Refining Community Logo

RE: Circulating catalyst without feed

Home Forums CatCracking FCC Operations Circulating catalyst without feed RE: Circulating catalyst without feed



feedback from conference delegates:
> select “good” quality torch oil, if possible, to avoid pH swings in sour water
> batch stripper catalyst from time-to-time to keep it hot and avoid mudding up
> check velocities where steam is injected; adjust conditions to keep <200 FPS for attrition reasons
> send gasoline to riser versus steam; helps add carbon on catalyst (less torch oil use) and steam usage (less SW); refiner practiced for this procedure for 12 days with success
> sample fractionator overhead accumulator for buildup of oxygen; vent at some frequency

Refining Community