Abstract
A mathematical model that describes the influence of feed and catalyst properties on the demetalation performance of a hydrotreating catalyst pellet has been developed. Analytical solutions have been obtained for first-order demetalation kinetics using a regular perturbation solution approach. The analytical relationships may be used to predict catalyst life and to reduce the computational time for solving more complex pellet and reactor problems. The effect of feed and catalyst properties on constant-temperature demetalation performance is studied. The results of model predictions of single-pellet performance are in agreement with the literature
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