Study on Hydrotreating of Waste Cooking Oil for Biodiesel

摘要

The influence of reaction conditions on the composition and yield of biodiesel made by hydrotreating of waste cooking oil were investigated with Ni-Mo-W/Al_2O_3 catalyst. The results demonstrated that the saturated C_(15)-C1_8 paraffins was the main product from the hydrotreating of waste cooking oil. With the increase in reaction temperature and LHSV, or the decrease of pressure and hydrogen/oil volume ratio, the decarboxylation or decarbonylation was enhanced. Otherwise, it would be advantageous to deoxidation reaction. The product yield from the hydrotreating of waste cooking oil increased when the reaction temperature and LHSV decreased and when reaction pressure and hydrogen/oil volume ratio increased.