| Home | E-Submission | Sitemap | Contact Us |  
Environmental Engineering Research 2000;5(4): 199-206.
INDUSTRIAL PLASMA EXPERIMENTS FOR SIMULTANEOUS REMOVAL OF SO2/NOx FROM A COAL-FIRED POWER PLANT
Chang Mo Nam1, Kyung Ryong Jang1, and Yong Kang2
1Environmental Research Group, Korea Electric Power Research Institute, Taejon 305-380, Korea
2Department of Chemical Engineering, Chungnam National University, Taejon 305-701, Korea
Corresponding Author: Chang Mo Nam ,
Received: August 17, 2000;  Accepted: November 16, 2000.
Share :  
ABSTRACT
Experimental investigations for simultaneous removal of SO2/NOx were performed using the pulsed corona discharge process under coal-fired, pilot-scale flue gas conditions. A pulse voltage of 70kV, its risetime of 200 nsec and total duration of 500 nsec were generated using a thyristor-type spark gap switch. Initial concentrations of SO2 and NOx were around 340 and 150 ppm in the presence of 4% O2 and 6 — 8% H2O. Various reaction parameters such as specific energy (Whr/Nm3), NH3 injection with/without corona discharges, gas temperature and C2H4 injection were investigated for SO2/NOx removal characteristics. SO2 removal was rather dependent on temperature and NH3, but the influence of energy consumption into the gas remained negligible. NOx removal efficiency increased with increasing energy consumption, but at lower energy consumption (<5 Whr/Nm3), NO to NO2 conversion was significantly limited below 30%. However, NO2 removal rate was sharply increased with C2H4 injection by which energy consumption was significantly reduced. The effects of residence time and frequency were also discussed. Consequently, about 90/65% simultaneous removal of SO2/NOx was achieved at 4.7 Whr/Nm3 when both NH3 and C2H4 additives were injected.
Keywords: corona discharge | flue gas | NOx | plasma | simultaneous removal | SO2
TOOLS
PDF Links  PDF Links
Full text via DOI  Full text via DOI
Download Citation  Download Citation
  E-Mail
Share:      
METRICS
1,256
View
6
Download
COMBINED REMOVAL OF SO2 AND NOx FROM SIMULATED FLUE GAS USING PULSE STREAMER CORONA   2000 October;5(3)
Editorial Office
464 Cheongpa-ro, #726, Jung-gu, Seoul 04510, Republic of Korea
TEL : +82-2-383-9697   FAX : +82-2-383-9654   E-mail : eer@kosenv.or.kr

Copyright© Korean Society of Environmental Engineers. All rights reserved.        Developed in M2community
About |  Browse Articles |  Current Issue |  For Authors and Reviewers