Oxidative Desulfurization of Non-hydrotreated Kerosene Using Hydrogen Peroxide and Acetic Acid

The oxidative desulfurization of a real refinery feedstock （i.e.,non-hydrotreated kerosene with total sulfur mass content of 0.16%） with a mixture of hydrogen peroxide and acetic acid was studied.The influences of various operating parameters including reaction temperature （T）,acid to sulfur molar ratio （nacid/nS）,and oxidant to sulfur molar ratio （nO/nS） on the sulfur removal of kerosene were investigated.The results revealed that an increase in the reaction temperature （T） and nacid/nS enhances the sulfur removal.Moreover,there is an optimum nO/nS related to the reaction temperature and the best sulfur removal could be obtained at nO/nS=8 and 23 for the reaction temperatures of 25 and 60°C,respectively.The maximum observed sulfur removal in the present oxidative desulfurization system was 83.3%.