Stationary and dynamic mathematical modeling of autothermal reforming of diesel with aromatic compounds

Abstract

The previously proposed stationary mathematical model provides a reliable description of n-hexadecane (diesel surrogate) reforming over the Rh/Ce0·75Zr0·25O2-δ/θ-Al2O3/FeCrAl structured catalyst. In its continuation this work represents the experimental studies and the model of the autothermal reforming process of hexadecane in a mixture with o-xylene and 1-methylnaphthalene. The reaction scheme is supplemented with reactions to account for steam reforming and oxidation of added aromatics compounds and selection of corresponding kinetic parameters is performed. The dynamic process of the reformer start until reaching the steady state is simulated by the non-stationary model in this work. The resulting mathematical and kinetic models provide a good description of the experiments performed with the reproduction of the dynamics of the observed outlet gas components concentrations and the catalyst temperature. The application of this model can be useful when considering the reforming of multicomponent mixtures or optimization of the dynamic start reformer process.