Optimization of Reactor Configuration for $\hbox {NO}_{x}$ Removal Using Magnetic Compression Pulsed-Power Generator

Effects of the radius of a coaxial pulse corona reactor and the polarity of an applied voltage on NO_x (nitrogen oxide) removal are investigated for industrial applications of the NO_x removal technology. Three radii of the pulse corona reactors (10, 30, and 50 mm) were chosen in the experiments of ozone generation and NO_x removal, and their energy efficiencies were measured. The 50-mm-radius reactor with the positive pulsed voltage was found to be suitable for the removal of large amount of NO_x and ozone generation. On the other hand, it was clarified that the 10-mm-radius reactor with the negative pulsed voltage is effective for the removal of small amount of NO_x and ozone generation. In the case of the 30-mm-radius reactor, energy efficiencies versus ozone concentration characteristics became a single curve at both the positive and negative polarities. For the purpose of the industrial application, a parallel reactor system and a reactor having a dielectric barrier were also tested experimentally. Through these experiments, the value of the energy efficiency of the parallel reactor system was confirmed to keep almost the same value as that of the single-reactor system. The reactor with the dielectric barrier on the outer electrode had higher energy efficiency than that without one.