Abstract: The first industrial application of a new high efficient THFS-I sulfide type reforming pre-hydrogenation catalyst developed independently by COONC Tianjin Chemical Research and Design Institute Co.Ltd. in a 800 kt/a reforming pre-hydrogenation unit of CNOOC Zhoushan Petrochemical Co. Ltd. was introduced. The industrial application results show that THFS-I has advantages of good stability and high HDS and HDN activities for pre-hydrotreating of secondary processing naphtha. Compared with FH-40C, the metal components of THFS-I catalyst are in a vulcanized state before activation and there is no need for presulfiding process. Therefore, it is no hydrogen sulfide occurred during the activation process, leading to no hydrogen sulfide corrosion and pollution of environments, and to a more efficient and environmental friendly start-up.

Key words: sulfide type, reforming pre-hydrogenation catalyst, inferior naphtha