Modeling of trickle bed reactor for hydrotreating of vacuum gas oils: effect of kinetic type on reactor modeling

摘要

The hydrodesulfurization (HDS) processes research requires a lot of experimental work to define promotion and inhibition effects and find out correlations between the variables that participate on the sulphur removal. By means of modeling and simulation is possible to determine the scope of the process, and by means of the sequential design of experiments (SDE) is possible to reduce the experimental work required through comparison of kinetic models, at the same time that it predicts experimental conditions that allow to select a unique model and estimate its parameters. The purpose of this work was to simulate the HDS process using the mathematical model developed in previous work and several kinetic models founded in literature. Together simulation is proposed a SDE-based software with Runge-Kutta routines, orthogonal collocation methods an Sequential Quadratic Programming to develop the steps of the Design and to be used on pilot plant applications. The good agree between theoretical and experimental data led to the development of a user-friendly program to simulate the complex process, make easier the interpretation of simultaneous reactions, and become a useful tool for to improve the operation conditions of hydrotreating industrial reactors.