Analysis of thermochemical performance of solar driven methane dry reforming
A numerical model of solar driven methane dry reforming was established to study the thermochemical reaction characteristics of methane dry reforming in metal foam reactor by using Fluent software combined with thermal conductivity,convection,radiation and reaction dynamics.The temperature field distribution and concentration distribution of each component in the reactor were shown,and the effects of inlet velocity and CH4/CO2 ratio on reactant conversion,product yield,carbon deposition and H2/CO ratio were obtained.The result shows that the concentrated solar radiation forms a high temperature core region at the front of the reactor,where the reforming reaction is most active.The reactant concentration decreases rapidly along the axis of the reactor,while the product concentration increases rapidly along the axis of the reactor.Increasing the inlet velocity within a certain range can improve the H2 yield.Although the CH4 and CO2 conversion rate decreases,it can effectively inhibit the carbon deposition and improve H2/CO ratio.Lower CH4/CO2 ratio can improve the CH4 conversion rate and effectively inhibit the carbon deposition.The maximum H2 yield reaches 56％when CH4/CO2 ratio is 2/3.
solar thermochemicalmethane dry reforminguser-defined functionsreaction kineticscarbon deposition
万方数据
维普
