Numerical Analysis of a Gliding Arc Plasma Scrubber for CO2 Conversion

CO2 emission has been gradually increased due to rising fossil fuel use. A gliding arc plasma scrubber (GAPS) was proposed to destruct CO2. For optimum design of GAPS, a CFD analysis has been conducted in different configuration for the system. The parameters considered included gas injection velocity at the nozzle and gas flow rate to gap between electrodes. The reactor configuration affected velocity fields which caused changes in the mixture fraction and the retention time. The mixing effect of CO2 and supplied gas (CH4 and steam) was enhanced by installing a orifice baffle. This revealed that the orifice baffle is effective in CO2 conversion by positioning the reactants in the gas into the center of plasma discharge.