Numerical Study Of Hydrogen Production From Rich Methane Combustion In Built-in Porous Media Swiss-roll Reactor

It is well known that hydrogen is a very efficient and clean-burning fuel. It contains much more energy per unit mass than any other conventional fuel and produces very low pollution emissions.Recently, hydrogen energy has become the focus of scientific research field. The conversion of methane to hydrogen has become the major source of the future hydrogen production, which is the major component of natural gas. Natural gas has become the third largest energy source. The method of producing hydrogen through rich combustion of methane in porous media can meet the above needs.To understand the working features of hydrogen production from methane super-adiabatic combustion in the built-in porous media Swiss-roll reactor, the computational fluid dynamics and detailed chemical reaction mechanism GRI1.2 were combined to simulate the reaction process of hydrogen production from methane in this reactor. The effects of equivalence ratio and premixed gas velocity on the highest temperature of burning zone, the components of synthesis gas and methane conversion efficiency were studied and compared with the experimental results. The results show that CH4 combustion temperature inside the porous media far outweigh the adiabatic combustion temperature, and the hydrogen production on the condition of superadiabatic combustion is realized. Within the scope of this research, methane-hydrogen conversion efficiency rises with the increase of equivalence ratio and premixed gas velocity, and the numerical values are similar with the experimental results.