Abstract: The impact of the addition of MIP light cycle oil (LCO) into Changling residue on residue hydrotreating was discussed under different operating conditions. The results show that the addition of MIP LCO increases the HDS and HDM rate by 2.37 and 3.14 percentage points respectively. The MIP gas oil yield increases by 8.69 percentage points.

Key words: residue hydrotreating, MIP, light cycle oil(LCO)