DocumentCode :
3362774
Title :
NOx removal by corona discharge in a pipe with nozzle electrode system
Author :
Ohkubo, Tomoki ; Kanazawa, S. ; Nomoto, Y. ; Chang, Jen-Shih ; Adachi, Takayoshi
Author_Institution :
Dept. of Electron. & Electr. Eng., Oita Univ., Japan
fYear :
1992
fDate :
4-9 Oct 1992
Firstpage :
1555
Abstract :
To improve the efficiency of NOx removal, a pipe electrode with a nozzle was used as a discharge electrode in a parallel-plate-type apparatus. A positive DC high voltage was applied to the discharge electrode. Additional gases, namely, N2, O2, and NH3, were introduced into the discharge space through the ionization region at the tips of nozzles; the main flow was a gas mixture containing NO. To study the effect of additional gas composition, small amounts of Ar or CO2 were added to the additional gases. Results show that corona characteristics and modes were significantly affected by the additional gas and, in a region of applied voltage, both NOx reduction rate and energy yield of NOx removal increased with decreasing corona power. It is concluded that high NO reduction rate and energy yield can be obtained by optimizing the additional gas mixture and its flow rate
Keywords :
corona; electrodes; electrostatic precipitators; nitrogen compounds; nozzles; Ar; CO2; N2; NH3; NO; NOx removal; O2; corona discharge; discharge electrode; electrostatic precipitators; gas flow rate; gas mixture; ionization region; nozzle electrode system; parallel-plate-type apparatus; pipe; positive DC high voltage; Chemical processes; Corona; Electrodes; Fluid flow; Gases; Needles; Physics; Plasma temperature; Sparks; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industry Applications Society Annual Meeting, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-0635-X
Type :
conf
DOI :
10.1109/IAS.1992.244379
Filename :
244379
Link To Document :
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