Progress in research of olefin contents reducing in FCC gasoline

The basic reaction principles of reducing olefin contents in FCC gasoline are introduced. Several influencing factors on olefin contents in FCC gasoline are discussed. The measures of reducing olefin contents in FCC gasoline are reviewed, which include two aspects. One is using FCC unit itself by selecting appropriate feed stocks, optimizing the operational condi- tions, using the catalyst or assistant to reduce olefin contents, the other is to make use of the relevant technologies, for example, gasoline etherifying, hydrogenation, catalytic reforming, superposition and so on.