The paper analyzed the reforming reaction of CH4 and CO2 from a thermodynamic perspec-tive.The Gibbs free energy changes and chemical equilibrium constants of the relevant reactions were analyzed.The effects of temperature,pressure,feed ratio,and amount of steam added on CH4 conver-sion,CO2 conversion,and carbon deposition were further analyzed.The results show that increasing temperature can increase the conversion of CH4 and CO2,while the carbon deposition rate decreases.As the pressure increases,the conversion rate of CH4 and CO2 decreases,and the carbon deposition rate increases.Adding a certain amount of water vapor can reduce the carbon deposition rate and the conversion rates of CH4 and CO2 are still high.The optimal reaction conditions are 900℃,105 Pa,n(CH4):n(CO2):n(H2 O(g))=1:1:0.7,at which condition,the CH4 conversion is 99％,the CO2 conversion is 96％,and the carbon deposition is 0％.
BFGCOGmixed reformingcarbon emission reductionreduction gas
维普
万方数据
