Development of a modified kinetic model for residual oil hydroprocessing

A basic conversion model for hydrodesulfurization (HDS) is developed according to corresponding reaction process. Further improvement is conducted on the model considering the HDS characteristics and industrial demand. The model can quantitatively describe the effect of operational conditions, deactivation behavior and residual properties on HDS. By comparison with the experimental data, the calculated conversions are all found to have a total average relative deviation of less than 5%, presenting a good fit in relation to the experimental data. Moreover, the model can also accurately predict the performance of hydrodecarbonresidue and hydrodemetallization. Results indicate that the model has a high universality and practicability.