HYDROTREATING OF FULL RANGE FCC GASOLINE

Abstract

Sulphur content of engine gasoline must be reduced below 50 ppm in the European Union from 2005, and gasoline containing 10 ppm sulphur will have tax allowance. FCC gasoline is one of the blend stocks being applied in largest amount (about 20-50%). The sulphur content of this is significant (about 50-2000 ppm), therefore 50-95% of the sulphur species of gasoline originates from this stream. Selective hydrotreating of FCC gasoline may be a favourable technique among the numerous new desulphurising methods. Achievements of a research work, made for hydrotreating a full range of FCC gasoline, are presented in this paper. The authors were able to find combinations of process parameters being suitable to produce gasoline blend stock of 11 ppm sulphur content with only 2 units loss of octane number.