Abstract: The 2.0 Mt/a hydrocracking unit in the refinery of Dushanzi Petrochemical Company of PetroChina adopted the hydrocracking technology with the compatile hydrotreating catalyst RN-410B and hydrocracking catalyst RHC-133B to increase the yield of jet fuel and simultaneously improve the quality of tail oil,and a successful running in September 2019. In the initial stage of operation，the smoke point of jet fuel fraction was 33.9 mm and the mass fraction of aromatics was less than 4%，and the tail oil BMCI was 5.6，which could meet the expectation. By adjusting the feedstock compositions of the unit, increasing the aromatics content of the mixed raw material after filtration, adjusting the reaction process conditions and optimizing the jet fuel cutting scheme, a qualified military No. 3 jet fuel fraction with aromatics content not less than 8.0% was successfully produced on the unit.

Key words: hydrocracking, Jet fuel, aromatic, FCC diesel