Numerical simulation of syngas production in filtrating combustion reactor under high pressure

The paper presents a mathematical model describing the non-static process of ultrarich methane — air mixture combustion in a filtration gas combustion reactor with allowance for elects of gas dispersion and interphase heat exchange. To consider the fluid-solid interaction, we performed a decomposition of the calculation zone into two domains. The dependence of gas and solid physical properties on temperature was included in the consideration. The GRI 3.0 kinetics mechanism of methane combustion is used with allowance for the dependence of kinetics parameters on pressure. Intensification of diffusion processes through gas phase dispersion and radiation heat transfer are taken into account. The composition of reaction products, combustion temperature, and thermal wave velocity are numerically investigated for a wide range of process parameters. The influence of pressure on the combustion process is studied in a range from 1 to 8 atm. Numerical results are compared with the experimental data. The mathematical model presented in this work can be used for optimizing porous media reactors. In the paper, we show the possibility of porous media methane conversion under high pressure conditions. High performance optimum parameters are obtained.