Non-thermal plasma remediation of SO2/NO using a dielectric-barrier discharge

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Abstract
Here we report the experimental and simulation results of removal of SO2 and NO from a simulated coal combustion gas using a dielectric‐barrier discharge. A Monte Carlo calculation is done to determine the transport properties of the flue gas. Following this, a detailed plasma chemistry calculation is done which takes into account the pulsed nature of the dielectric‐barrier discharge. The computed results are in good agreement with the experimental data. We find that in low concentrations (400 ppm for SO2 and 100 ppm for NO) the dielectric‐barrier discharge was capable of removing 99% of the SO2 and NO. Due to temperature dependence of the heavy particle reactions, there is a decrease in NO removal as the energy density is increased past an optimum value.