Saudi Aramco studies long-term storage effects on FCCU gasolines

Gasoline produced in a fluid catalytic cracking unit has elevated octane rating, but its olefinic structure makes it less chemically stable than other gasoline components. Olefins in gasoline are responsible for formation of polymeric deposits in storage tanks, fuel ducts, and injectors.Because FCC gasoline contains unstable compounds, Saudi Aramco undertook to study the consequences of long-term storage of such products with olefin content up to 15 vol %. The most sensitive parameters were monitored: oxidation stability, octane number, and existent gum.1It is important to note that if the gasoline quality breaks down, results from these key tests will be severely affected. To assess the ...

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