An Experimental Investigation on Enhancing Nitrogen Oxides Reduction of Non-Thermal Plasma (NTP) Aftertreatment System with Silver-Base Catalyst with NTP Downstream SCR Catalyst Configuration

This paper delves into the understanding of how dielectric barrier discharge (DBD) non-thermal plasma (NTP) system affects the flue gas compositions and the synergistic effects of DBD-NTP and SCR systems using NTP-downstream-SCR configuration on nitric oxide reduction through the experimental investigation. Simple gas feeds were used to observe the interaction between gases when high voltage discharge was applied. Overall, DBD-NTP was effective in oxidising NO and NH 3 into NO 2 while also reducing NO in the presence of NH 3 . When DBD-NTP was installed downstream the SCR catalyst, it demonstrated substantial additional deNOx and reduction of NH 3 slippage. This proposed SCR+DBD-NTP configuration showed a potential to help mitigate low deNOx performance at low temperatures.