Abstract: New generations of hydrotreating catalyst RN-410 and hydrocracking catalyst RHC-131 were developed by SINOPEC Research Institute of Petroleum Processing to meet the market demand for jet fuel and high quality unconverted oil. The influence of feedstocks，conversion level and production fractionation methods on jet fuel and unconverted oil were studied with the optimized catalysts grading. A hydrocracking process for greatly increasing jet fuel yield and improving unconverted oil quality was developed and applied successfully in a 2.0 Mt/a hydrocracking unit of Sinopec Beijing Yanshan Company. The application indicated that the yield of jet fuel is above 43% when the naphtha yield is 22%, and the qualities meet the requirements of 3# jet fuel. The BMCI value of the unconverted oil mixed with the diesel fraction is 8.7, a high quality feedstock for steam cracking.

Key words: hydrocracking, jet fuel, unconverted oil