March 2013

Clean Fuels

FCC catalyst design evolves to maximize propylene

Refiners in Asia and the Middle East are setting the pace, with numerous new FCC units planned or already onstream to take advantage of this opportunity. Each of these new units includes the most modern technology to achieve record high propylene and conversion.

Pouwels, C., Albemarle Catalysts; Bruno, K., Albemarle Corp.

The growing demand for propylene has intensified interest in maximizing propylene from refinery fluid catalytic cracking units (FCCUs). Refiners in Asia and the Middle East are setting the pace, with numerous new FCC units planned or already onstream to take advantage of this opportunity. Each of these new units includes the most modern technology to achieve record high propylene and conversion. On one hand, new records are set in the heaviness of feeds posing challenges to maintain activity; conversely, some FCCUs are specifically designed for low sulfur (hydrotreated) gasoil (GO) feeds that impose a real challenge to meet the heat balance requirement of the FCCU. Achieving record high p

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