Etude comparative entre les procédés de vaporéformage et de l’oxydation du méthane pour la production de l’hydrogène dans des conditions de fonctionnement stationnaires

Abstract

In this study, the reactions of steam reforming and of partial oxidation of methane were studied in a reactor incorporating a hydrogen permselective membrane. The reactors were packed with Ru/SiO2 and with Ni/Al2O3 catalyst particles activated at low temperature for steam reforming and partial oxidation respectively. An isothermal one-dimensional steady-state fixed bed model was developed to simulate the effect of some operating parameters on the reactor performance. The obtained results show that, the conversion of methane can be improved by removing the produced hydrogen from the reaction side to the permeate side for both processes. In the other hand, partial oxidation presents critical parameters, which are the (S/C) and (O/C) ratios, and the obtained performance depends strongly of the optimal values of (O/C) and (S/C). The comparisons between these processes show that the steam reforming is the best way for produicing pure hydrogen with high quantity and quatily, but the partial oxidation is the best for syngas produising for GTL technology.