NO removal characteristics of a corona radical shower system under DC and AC/DC superimposed operations

K. Yan, T. Yamamoto, S. Kanazawa, T. Ohkubo, Y. Nomoto, J.-S. Chang
Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242)  
In this paper, the effects of the applied voltage modes on the positive corona discharge morphology and NO removal characteristics from air stream are experimentally investigated. By using a dc superimposed high frequency ac power supply (10-60 kHz), a uniform streamer corona can be generated, which is also less sensitive to electrode mis-arrangements. Hermstein glow can be transferred to streamer corona if the peak-to-peak voltage is larger than 1.0 kV at the voltage change rate of 0.2 kV/ s.
more » ... significant amount of NO removal is observed under streamer corona. For the Hermstein glow, the removal is negligible. Moreover, the basic principle for designing ac/dc energized streamer corona is also presented in this paper. Index Terms-AC/DC superimposed operations, glow corona, NO removal, streamer corona.
doi:10.1109/ias.1998.729833 fatcat:pvuzshffc5crxdpowbpkhzag5i