Abstract

Catalytic cracking is a very flexible process to reduce the molecular weight of hydrocarbons. Today Fluid Catalytic Cracking (FCC) remains the dominant conversion process in petroleum refineries. Prior to 1925, the higher boiling heavy crude oil molecules were chemically changed to smaller naphtha (gasoline) molecules by thermal decomposition using a process called thermal cracking. In the late twenties Eugene Jules Houdry demonstrated that a catalytic cracking process yields more gasoline of a higher octane. The first full-scale commercial fixed bed catalytic cracking unit began production in 1937.

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