Abstract: In order to satisfy the increasing market demand of jet fuel and chemical materials, the hydrocracking technology for improving heavy naphtha and jet fuel yield developped by SINOPEC Research Institute of Petroleum Processing was applied in 2.7 Mt/a hydrocracking unit of PetroChina Sichuan Petrochemical Company in2018. The caliberation results after 14 months operation illustrated that with unconverted oil yield of 18.86%, heavy naphtha yield was 29.47%; the jet fuel yield reached 36.24%, 11.48 percentage points higher than the last operation cycle and met the requirements of No.3 jet fuel. The unconverted oil with BMCI value of 7.8 was the high quality feedstock for steam cracking. The goal of increasing heavy naphtha and jet fuel yields was achieved while reducing diesel oil and improving the quality of chemical raw materials.

Key words: heavy naphtha, jet fuel, chemical raw materials, hydrocracking, BMCI