Evaluation of residence time on nitrogen oxides removal in non-thermal plasma reactor

Talebizadeh, P; Rahimzadeh, H; Babaie, M; Anaghizi, SJ; Ghomi, H; Ahmadi, G; Brown, R

Abstract

Non-thermal plasma (NTP) has been introduced over the last few years as a promising after- treatment system for nitrogen oxides and particulate matter removal from diesel exhaust. NTP technology has not been commercialised as yet, due to its high rate of energy consumption. Therefore, it is important to seek out new methods to improve NTP performance. Residence time is a crucial parameter in engine
exhaust emissions treatment. In this paper, different electrode shapes are analysed and the corresponding residence time and NOx removal efficiency are studied. An axisymmetric laminar model is used for obtaining residence time distribution numerically using FLUENT software. If the mean residence time in a NTP plasma reactor increases, there will be a corresponding increase in the reaction time and consequently the pollutant removal efficiency increases. Three different screw thread electrodes and a rod electrode are examined. The results show the advantage
of screw thread electrodes in comparison with the rod electrode. Furthermore,between the screw thread electrodes, the electrode with the thread width of 1 mm has the highest NOx removal due to higher residence time and a greater number of micro-discharges. The results show that the residence time of the screw thread electrode with a thread width of 1 mm is 21% more than for the rod electrode.

Citation

Talebizadeh, P., Rahimzadeh, H., Babaie, M., Anaghizi, S., Ghomi, H., Ahmadi, G., & Brown, R. (2015). Evaluation of residence time on nitrogen oxides removal in non-thermal plasma reactor. PLoS ONE, 10(10), e0140897. https://doi.org/10.1371/journal.pone.0140897

• Journal Article Type: Article
• Acceptance Date: Oct 1, 2015
• Publication Date: Oct 23, 2015
• Deposit Date: Oct 26, 2015
• Publicly Available Date: Apr 5, 2016
• Journal: PLoS ONE
• Electronic ISSN: 1932-6203
• Publisher: Public Library of Science
• Volume: 10
• Issue: 10
• Pages: e0140897
• DOI: https://doi.org/10.1371/journal.pone.0140897
• Publisher URL: http://dx.doi.org/10.1371/journal.pone.0140897
• Related Public URLs: http://www.plosone.org/