A cape of HDT industrial reactor for middle distillates

Hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) of middle distill ates over a commercial Ni-Mo/gamma-Al2O3 has been studied under wide operat ing conditions of 340-380 degrees C and 38-98 atm. A power law model was pr esented to each one of those reactions. The parameters of kinetic equations were estimated solving the ordinary differential equations by the fourth o rder Runge-Kutta-Gill algorithm and Marquardt method for searching of kinet ic parameters (kinetic constants as well as the orders of the reactions). A n adiabatic diesel hydrotreating trickle-bed reactor packed with the same c atalyst was simulated numerically in order to check up the behavior of this specific reaction system. One-dimensional pseudo-homogeneous model was use d in this work. For each feed, the mass and energy balance equations were i ntegrated along the length of the catalytic bed using the fourth Runge-Kutt a-Gill method. The performance of two industrial reactors was checked. Alte rnative configurations are proposed in this work, which have advantages com pared with conventional HDT commercial reactors. (C) 2000 Elsevier Science Ltd. All rights reserved.