Abstract: Various jet fuels were hydrotreated over novel catalyst RSS-2 on a 30 mL fixed bed reactor to obtain sulfur contents of products under different reaction conditions. Based on these data kinetic parameters were calculated and a kinetic model for low pressure hydrodesulfurization reaction of jet fuel was established and validated. Results show that this hydrodesulfurization reaction model is close to piston flow reaction model with an apparent reaction order of 1.1. Under the testing conditions, the influence of reaction pressure and H2/oil ratio on the hydrodesulfurization reaction is a little, the order of reaction is 0.273 and 0.375, respectively. The influence of reaction temperature on hydrodesulfurization reaction can be expressed by Arrhenius equation with activation energy of 114.5 kJ/mol. This kinetic model can be used to predict the sulfur content of product under given conditions and it is useful as reference for refinery to adjust operation parameters.

Key words: jet fuel, hydrogenation, kinetic model, desulfurization