Numerical simulation on the effect of operating conditions and syngas compositions for synthetic natural gas production via methanation reaction

Low CO conversion and CH4 yield were obtained when coal- or biomass-derived syngas was used as the feedstock for methanation reaction due to low H2/CO ratio. To enhance SNG production via syngas methanation, it is suggested that the water-gas shift reaction be employed to increase the H2/CO ratio before carrying out methanation reaction.