October 2018

Catalyst

More residue processing in FCCUs

Resid units have more than 2 wt% Conradson carbon residue (Concarbon) in feed and more than 5,000 parts per million (ppm) of nickel (Ni) and vanadium (V) on equilibrium catalysts (Ecat).

Genç, M., Karani, U., Er, I., TÜPRAŞ; Kandaz, S., Albemarle Corp.

Resid units have more than 2 wt% Conradson carbon residue (Concarbon) in feed and more than 5,000 parts per million (ppm) of nickel (Ni) and vanadium (V) on equilibrium catalysts (Ecat). Processing residue influences catalyst, additive selection, unit equipment and operation. It is essential to select higher-activity catalysts with metal traps to handle residue, while keeping catalyst properties the same. In 2010, China limited rare earth oxide (REO) exports, which led to an increase in global prices. This action led to a significant decrease in REO content in fluid catalytic cracking (FCC) catalysts around the world. FCC operators that produced more propylene preferred to use low-rare-eart

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