关键词: 催化汽油, 全馏分, 加氢脱硫, 催化剂, 辛烷值, 硫醇, 反应温度

Abstract: 50.0×104 t/a FCC gasoline hydrodesulfurization unit is a new-built unit for CNOOC Huizhou Refinery to meet the requirements of gasoline upgrading to national emissions standards No.4 and No.5. FCC full range gasoline selective hydrodesulfurization technology (CDOS-FRCN) is adopted in this unit，catalyst with proprietary technology is provided by Beijing Haishunde Titanium Catalyst Co. Ltd.. Unit calibration data show，FCC full range gasoline is converted to hydrogenated gasoline by CDOS-FRCN technology，the content of sulfur could reach 11 μg/g，the content of mercaptan could reach 10 μg/g，the loss of RON is less than 1.5. The inlet temperature of the second reactor R102 has a strong effect on the desulfurization effectiveness and RON loss，the higher R102 inlet temperature，the higher the desulfurization rate and the larger RON loss. CDOS-FRCN hydrodesulphurization technology could effectively decrease sulfur content in gasoline and octane number loss，could provide economical flexible technological options for producing clean gasoline with sulfur content less than 50 μg/g or 10 μg/g.

Key words: FCC gasoline, full range, hydrodesulfurization, catalyst, octane value, mercaptan, reaction temperature