Articles techniques et présentations

This work treats of a preferential oxidation reactor, which is simulated by a two-dimensional axial symmetric model. The reactor serves as purification of hydrocarbon reformat and converts the CO mole fraction from up to 1 % in the feed gas down to a few ppm at the outlet to deliver a hydrogen rich feed gas for a PEM fuel cell. The model combined chemical kinetic expressions, which were determined within kinetic experiments with mass, energy and momentum transport equations. In a first step the O/CO-ratio was increased successively while the inlet temperature T0 was held constant. Subsequently the inlet temperature was varied whereas the O/CO-ratio stayed constant. Cross section plots in axial direction are presented and show the reactor performance.