Multielectrode Corona Reactor for NOx Diesel Exhaust Treatment

Y. Yankelevich, M. Wolf, R. Baksht, A. Pokryvailo, Jan Vinogradov, E. Sher

Research output: Chapter in Book/Report/Conference proceedingPublished conference contribution


Summary form only give. Pulsed corona offers a real promise for degradation of pollutants in gas and water streams. This paper presents a study of NOX removal from diesel exhaust. Special emphasis is placed on the investigation of the dependence of the NO removal rate and efficiency on the pulse repetition rate (PRR). A nanosecond solid state power supply (45 kV, 60 ns, up to 1 kHz) was used for driving the corona multielectrode reactor [Pokryvailo, A., et al., 2004]. Experiments related to the matching between the solid state power supply and corona reactor were carried out before the exhaust treatment. A Mitsubishi 10-kW 3-cylinder diesel-generator engine with a total volume of 1300 cc was used as a source of the exhaust gas. At an NO removal rate of 35% the NO removal efficiency was 53 g/kWh for PRR = 500 Hz and the initial NO concentration was 375 ppm. Experiments show that NO removal rate increases with the increase of the pulse voltage. Similar results were demonstrated by the authors of [Shimomura, N., et al., 2006]. A semi-empirical expression for the corona reactor removal efficiency related both to PRR and to the residence time is presented. The removal efficiency decreases with increasing PRR at a constant flow rate or constant residence time. This expression demonstrates a reasonable agreement between calculation results and experimental data.
Original languageEnglish
Title of host publicationPlasma Science
PublisherIEEE Explore
Number of pages1
ISBN (Print)978-1-4244-0915-0
Publication statusPublished - 15 Oct 2007
Event2007 IEEE 34th International Conference on Plasma Science - Albuquerque, Mexico
Duration: 17 Jun 200722 Jun 2007

Publication series

NameCurran Associates
ISSN (Print)0730-9244


Conference2007 IEEE 34th International Conference on Plasma Science
Abbreviated titleICOPS


  • Corona
  • Inductors
  • water pollution
  • Solid state circuits
  • Power supplies
  • Propulsion
  • Physics
  • Laboratories
  • Degradation
  • Air pollution


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