NOx treatment by positive streamer corona

Gasparik, R Mine, N Ihara, S Satoh, S Yamabe, C

R. Gasparik et al., NOx treatment by positive streamer corona, VACUUM, 59(1), 2000, pp. 220-227

11

INGLESE

Article

Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering

VACUUM

0042-207X → ACNP

59

1

2000

220 - 227

ISI

0042-207X(200010)59:1<220:NTBPSC>2.0.ZU;2-W

Nitrogen oxides were treated by a positive streamer corona in both, multi-w ire-to-plane and wire-to-plane discharge reactors. Tn the former reactor, t he target was to establish a uniform streamer corona. It was successfully g enerated using a DC power supply and NO/N-2 500-ppm initial gas, when a ser ies gap was set into the circuit, which enhanced the treatment up to 7.5 g NO/kW h. In the wire-plane discharge reactor, the effect of grounded electr ode material on deNO(x) efficiency was investigated. A uniform positive str eamer corona was generated regardless of the grounded electrode material ev en without the use of series gap because a single wire was employed for the high-voltage electrode. The treatment efficiency was enhanced when the gro unded copper electrode replaced the stainless-steel electrode, and oxygen a nd water vapors were injected into the reactor (deNO(x) = 30% in Cu-plate r eactor, deNO(x) = 16% in Sus-plate reactor). (C) 2000 Elsevier Science Ltd. All rights reserved.