With the development of industrial technology,The clean fuel already has became the development trendency of fuel oil in each country, At present Hydro-desulfurization can remove the majority of sulfur-containing compounds, but it is difficult to remove many stubborn sulfide, such as benzenethiophene and dibenzenethiophene derivatives, In many developed countries successively developed new desulfurization process for responding to the strict requirement of oil standards of world. Facing to the world fuel st...