Abstract: Based on the composition analysis of the hydrocracking products with different distillation range, it is found that the aromatic hydrocarbons show a volcano type distribution and are mainly concentrated in the middle distillate; the yields of distillates are affected by changes of the cutting point moving forward or backward. The aromatic potential of heavy naphtha, cetane index of diesel decreases with IBP reduction, and the smoke point of jet fuel and BMCI value of tail oil increases, while the cracking performance of the tail oil has a little change. The effect of FBP increase on naphtha aromatic potential is not obvious, but the smoke point of jet fuel and cetane index of diesel increases greatly. It is concluded that the adjustment of distillation range of the product can highly optimize the compositions of hydrocracking products to response to market changes better.

Key words: hydrocracking, distillation range, aromatics, yield