Abstract: A pre-hydrotreating catalyst, developed by Daqing Petrochemical Research Center of PetroChina Petrochemical Institute, was evaluated in laboratory and applied in a 500 kt/a continuous reforming unit in Dushanzi Petrochemical Company. The results in lab show that the sulfur and nitrogen contents of the treated oil both are reduced to less than 0.5 μg/g from the 175 μg/g and 1.31 μg/g in feed, respectively at conditions of 265 ℃，2.0 MPa，H2 / oil volume ratio of 110 and LHSV of 4.44 h-1, better than reference catalyst. The results of nearly one year industrial application exhibit that the pre-hydrotreating catalyst has a higher activity for desulfurization and denitrogenation, and a lower pressure drop. The properties of pre-hydrotreated oil meet the feed requirements for reforming reactor.

Key words: reforming, pre-hydrotreating, catalyst, laboratory evaluation, industrial application