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AFX™ catalysts for increased propylene production from FCC units

New technology to meet propylene demand. Fluid catalytic cracking (FCC) units are playing an increasingly important role in meeting the growing worldwide demand for propylene. To help refiners meet this demand better, Albemarle has introduced the innovative AFX catalyst technology and catalyst family, which are designed specifically for operation at high propylene yield.

Before AFX, propylene production from an FCC unit with a traditional catalyst was limited. ZSM-5 based additives can help to boost the conversion to propylene, but the base catalyst determines what level of propylene is ultimately achieved. AFX catalysts are technologically advanced and designed to maximize the propylene potential from FCC units, both when used alone and when supplemented with an olefins-octane additive.

The unique design of AFX, with its optimized balance between micro-, meso- and macro-activity, proprietary specialty zeolites and high accessibility, minimizes secondary cracking reactions such as hydrogen transfer and maximizes propylene production. AFX can be applied in both conventional and the latest FCC unit designs to increase propylene production to at least 12 wt%. AFX can be formulated for the entire range of feedstocks, from heavy residues to hydrotreated gas oils.

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