REMOVAL OF SO2 AND NO FROM GAS STREAMS WITH COMBINED PLASMA PHOTOLYSIS

Combined plasma photolysis (CPP) has been developed and experimentally demonstrated as a new method to simultaneously remove SO2 and NO from gas streams. This laboratory-scale device integrates the use of a die lectric barrier discharge (DBD) plasma and ultraviolet radiation. The composition. temperature. and pressure of the treated gas streams simu late gases typically generated by the combustion of fossil fuels. Simu ltaneous removal efficiencies for SO2 and NO are as high as 29% and 79 %, respectively. CPP enhances SO2 removal efficiencies by 25% when com pared to using DBDs only. NO removal efficiency achieved by CPP is 9% less than NO removal efficiency achieved by DBDs only. SO2 and NO remo val efficiencies arc limited by the power deposited into the gas strea m that could be achieved with the existing power supply. This new devi ce shows promise as a new technique to simultaneously remove SO2 and N O from gas streams generated by the combustion of fossil fuels.