Abstract: The first commercial application of fully sulfurized FHUDS-10 catalyst in a 1.2 Mt/a diesel hydrogenation unit in Chambroad Petrochemical Co., Ltd. was introduced. The results showed that the start-up time of FHUDS-10 catalyst was shortened by about 20 hours compared with that of conventional oxidation-state catalyst. The sulfur mass fraction of refined diesel was 4.0μg/g and the mass fraction polycyclic aromatic was 4.2% under the conditions of a reaction pressure of 7.4 MPa, a reactor inlet temperature of 314 ℃,a reactor outlet temperature of 364 ℃, and a main catalyst volume space velocity of 0.85 h^-1 during calibration with the mixture of straight-run diesel and coker gasoline-diesel as raw material. Since its stable application for 7 months, the refined diesel can meet the quality standard of China standard VI, which indicates that the fully sulfurized FHUDS-10 catalyst has good activity.

Key words: fully sulfurized, catalyst, diesel, hydrogenation