Abstract: The proportion of fluid catalytic cracking (FCC) units in petrochemical enterprises is very large. The high content of aromatic and nitrogen, high density and low cetane index of FCC light cycle oil (LCO) make hydrorefining difficult. Furthermore, the domestic demand of diesel is decreasing, it is necessary to find a suitable method to deal with LCO. SINOPEC Maoming Company used the FD2G LCO hydrogenation conversion technology developed by SINOPEC (Dalian) Research Institute of Petroleum Processing and Petrochemicals Co.Ltd. to retrofit its idle hydrogenation units to process LCO feedstock and produce high octane gasoline, by-product clean diesel and gas products. The unit run smoothly, the product was qualified, the diesel oil was reduced about 400 kt/a successfully. The aim of increasing gasoline production, solving the problem of diesel oil leaving the factory and increasing the benefit of the enterprise was achieved.

Key words: LCO, hydro-treatment, catalyst, conversion