Title :
NO removal characteristics of a corona radical shower system under DC and AC/DC superimposed operations
Author :
Yan, Keping ; Yamamoto, Takashi ; Kanazawa, Seiji ; Ohkubo, Toshikazu ; Nomoto, Yukiharu ; Chang, Jen-Shih
Author_Institution :
Dept. of Electr. Eng., Eindhoven Univ. of Technol., Netherlands
Abstract :
In this paper, the effects of the applied voltage modes on the positive corona discharge morphology and NO removal characteristics from air streams 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 he 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/μs. A 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
Keywords :
air pollution control; corona; electrodes; glow discharges; nitrogen compounds; plasma materials processing; power supplies to apparatus; 10 to 60 kHz; AC/DC energized streamer corona; AC/DC superimposed operation; DC superimposed high frequency AC power supply; DC superimposed operation; Hermstein glow; NO; NO removal characteristics; air emissions control; air streams; applied voltage modes; corona radical shower system; design principle; electrode mis-arrangements; peak-to-peak voltage; positive corona discharge morphology; streamer corona; uniform streamer corona; voltage change rate; Corona; Electrodes; Inductors; Plasma applications; Pollution; Power engineering and energy; Pulsed power supplies; Surface discharges; Surface morphology; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
