cfd study of cmr performance during so3 decomposition

The possibility of applying a catalytic membrane reactor (cmr) to so3 decomposition in a low-temperature range was theoretically evaluated with the purpose of producing co2-free hydrogen in an iodineesulfur thermochemical cycle# a two-dimensional, isothermal and plug-flow model was developed for a cocurrent membrane reactor with selective permeation from the reactant stream to the permeate stream# simulation results have revealed that cmrs can greatly reduce the reaction temperature for so3 decomposition from the conventional 1200-1400 k to about 900 k# we predicted that porous inorganic membranes with a high o2 permeability and with selectivities of more than 50 for o2/so3 and less than 10 for o2/so2 had the potential to effectively improve so3 conversion# cmrs were simulated to carry out so3 decomposition at different reaction temperatures, and pressures in feed and permeate streams# so3 conversion at 900 k was increased to 0#93 beyond the equilibrium conversion of 0#28 due to a shift in thermodynamic equilibrium#