2018

Catalyst Technology Update

The optimal catalyst makeup in an FCC unit

Fluid catalytic cracking (FCC) is one of the key process technologies in the refining industry. The FCC unit increases refining margins by upgrading low-value streams, such as vacuum gasoils or atmospheric and vacuum residues, to more valuable products, such as propylene, butylenes and high-octane naphtha.

Salgado, H., Saudi Aramco

Fluid catalytic cracking (FCC) is one of the key process technologies in the refining industry. The FCC unit increases refining margins by upgrading low-value streams, such as vacuum gasoils or atmospheric and vacuum residues, to more valuable products, such as propylene, butylenes and high-octane naphtha. Due to the greater availability of heavy crude oils, the quality of FCC feeds has become poorer. These types of poorer feeds contain higher contents of carbon, sulfur, nitrogen and metals. Regarding catalyst performance, metals are one of the most harmful contaminants. These contaminants can lead to undesirable problems, such as equilibrium catalyst (Ecat) deactivation and dehydrogenation

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