REMOVAL OF NOX FROM NO2-NO-N-2 MIXTURE BY A PULSED AND DC STREAMER CORONA IN A NEEDLE-TO-PLACE REACTOR

The results of laboratory experiments on reduction of NOx in the oxygen free gas mixture NO2:NO:N-2 simulating exhaust gas, by means of pulsed and de streamer corona discharges generated in a needle-to-plate reactor have been presented. The results show that the de corona discharge is more efficient in De-NOx process than the pulsed corona discharge. This is in contrast to the results obtained in the wire-to-cylinder reactors where the pulsed corona discharge removes NOx more efficiently. The results also lead to the conclusion that in the de streamer corona discharge the short pulses and long interelectrode distances are recommended in order to increase the NOx conversion rate.