Abstract: Some technical measures, such as optimizing FCC feedstocks, altering the end point of FCC gasoline, adopting DSO hydrogenation technology for FCC gasoline, setting up MTBE unit, isomerization unit and benzene extraction unit, were conducted in Yumen Refinery to meet the requirements of upgrading gasoline quality. Since then the gasoline quality was improved significantly: the RON of gasoline product increased from 91.95 to 94.27 and sulfur content dropped from 287.60 μg/g to 31.50 μg/g, meeting the requirements of high grade clean gasoline standard.

Key words: clean gasoline, sulfur, DSO, application