Abstract: new process technology (FD2G) was developed by SINOPEC Dalian(Fushun) Research Institute of Petroleum & Petrochemicals for producing high octane gasoline blending component using hydrotreated LCO as feed. Based on the composition analysis of LCO hydro-upgrading products, the solutions were raised for the best utilization of the products to strengthen the market competitiveness. The results showed that when processing LCO with high aromatic content, the obtained gasoline product possessed of high aromatic content and high octane number, its narrow fraction enriched in C6~C8 aromatics could be used as feed of aromatic extraction process. When processing hydrotreated LCO with low aromatic content, the gasoline product contained low content of aromatics and low octane number but its narrow fraction, rich in naphthenic hydrocarbons, could be used as feed for the reformer, and the remaining narrow fraction with high aromatic content could be used as a high octane gasoline blending component.

Key words: LCO, Octane number, gasoline, hydrocarbon composition, narrow fraction