Removal of NOx from Dry Air by a Pulsed Corona Discharge with Magnetic Field

Autor: Park, Jae-youn, Kim, Geon-ho, Kim, Jong-dal, Koh, Hee-seog, Lee, Duck-chul
Zdroj: Journal of Advanced Oxidation Technologies; June 1997, Vol. 2 Issue: 2 p294-298, 5p
Abstrakt: The effect of magnetic field on NOx removal characteristics of the Multipins-plate plasma reactor was experimentally investigated. Experiments were conducted for the simulated flue gas (NO: 0.17 %, N2: 99.83 %). The NO initial concentration, flow rate (Qg) and magnetic flux density (Mf) were varied in the ranges of 400, 700, 1000, 1350 ppm, 1, 3, 5 L/min and 0, 0.27, 0.36 wb/m2, respectively. The magnetic field was closely related to NOx removal characteristics. In case that the magnetic field was applied at a right angle to the electric field of discharge domain, the discharge power decreased. NOx removal efficiency increased with increasing magnetic flux density and pulse repetition rate (Pr). NOx removal efficiency slightly depended on NO initial concentration and decreased with increasing gas flow rate. The best NOx removal efficiency was 85 % at the magnetic flux density of 0.36 wb/m2, NO initial concentration of 400 ppm and the flow rate of 1 L/min. The energy yield was significantly improved in the presence of the magnetic field and increased with increasing gas flow rate.
Databáze: Supplemental Index