Energy & Fuels 2005, 19, 2279-2286
2279
NOx Treatment by DC Corona Radical Shower with Different Geometric Nozzle Electrodes Z. L. Wu, X. Gao,* Z. Y. Luo, E. Z. Wei, Y. S. Zhang, J. Z. Zhang, M. J. Ni, and K. F. Cen Clean Energy and Environment Engineering Key Lab of Ministry of Education, Zhejiang University, Hangzhou 310027, People’s Republic of China Received September 8, 2004. Revised Manuscript Received August 2, 2005
The nozzle electrode is a very important part in the corona radical shower NOx treatment system. In this study, the influences of different geometric nozzle electrodes on corona discharge characteristics, ozone and NOx formation characteristics, and NO conversion characteristics were investigated. In addition, an experiment that involved the NO conversion characteristics, relative to multinozzle electrodes, was performed. The results show that the different nozzle radii may transform the discharge modes. The increasing nozzle quantity can enlarge the corona region and increase the discharge current, while it almost has no effect on the onset voltage and sparking voltage. The ozone formation during corona discharge is affected by different geometric nozzle electrodes. More ozone is generated with the increasing nozzle radius and nozzle quantity. However, NOx concentrations are not affected much and the NOx concentrations are basically
