Numerical study on combustion in a porous medium with Pt catalyst

Using the Deutschman CH4/air/Pt surface reaction mechanism and GRI30 gas phase reaction mechanism, combustion of CH4/air premixed gases in a porous medium burner with Pt catalyst was numerically studied based on the volume averaged two-temperature model. Compared with the results of the inert porous medium burner, it is found that the flame front moves forward with Pt catalyst, and becomes more evident with the increase of the mass flow rate. In the catalyzed porous media burner, both the solid and gas temperature distributions are more uniform and the maximum temperature is lower than that in the inert burner. The introduction of the catalyst can reduce the size of the burner and bring down pollutant emissions.