Research Advances in NO_x and Dioxins’ Mitigation in Flue Gas by Non-Thermal Plasma Assisted Combustion

This paper reviews research advances in pollutant emissions control via various NTP-assisted approaches during combustion, with a particular focus on their impacts on NO_x and dioxin mitigation. Firstly, the mechanism by which radicals (e.g., O, H, OH) generated by NTP influence the combustion process is introduced. Secondly, the application of NTP technology in gaseous, solid, and liquid fuel combustion is analyzed, along with the effects of parameters such as voltage and power on NO_x emissions and the associated reaction kinetics mechanisms. Thirdly, the degradation mechanisms of dioxins and their precursors during solid waste combustion, mediated by radicals such as OH, H, and O generated by NTP, are summarized. Finally, the effects of NTP on ignition delay time and combustion efficiency during ignition and combustion are discussed. In general, NTP-assisted combustion is a highly promising technology, and it will play a significant role in enhancing the solid wastes’ combustion efficiency and reducing emissions of pollutants such as NO_x and dioxins.