Effect on non-thermal plasma assisted catalyst technology in diesel hazardous emission reduction

The formation of non-thermal plasma and dielectric barrier discharge mechanism were analysed.According to the characteristics that non-thermal plasma can produce active radicals,a non-thermal plasma assisted catalyst model for conversing diesel hazardous emission was designed.A cell type dielectric barrier discharge reactor assisted catalyst device was used to study the reduction of the hazardous emission from the diesel engine,and different experiment projects were tested on its effect of reducing hazardous emission in bench test.The experimental result showed that the total NO_x changes little,because NO was oxidized to NO_2 primarily in gas phase without catalyst,and with catalyst the reduction of NO_2 to N_2 occurs greatly causing total NO_x decreasing.PM was oxidized to CO_2 with active radicals.The results showed that using non-thermal plasma assisted catalyst technology can efficiently reduce diesel NO_x and PM emissions.