TY - JOUR
T1 - Effects of CH4 and CO on the reduction of nitric oxide to nitrogen in a discharge reactor
AU - Tsai, Cheng Hsien
AU - Hsieh, Lien Te
AU - Chang, Juu En
AU - Kuo, Yi Ming
AU - Tsai, Ying I.
N1 - Funding Information:
The authors thank the National Science Council in Taiwan for financially supporting this research work (Grant NSC-92-2211-E-151-002).
PY - 2007/1
Y1 - 2007/1
N2 - Additives are often added to enhance the efficiency of NO removal. This study uses a radio frequency (rf) discharge to consider the effect of added CH4 and CO to simulated NO/N2/O2/H2O mixtures on the elevation of NO conversion and the reduction of NO into N2. The enhancement levels of NO conversion when using various additives were found to be in this order: +CH4 > CO > no additive. NO conversion reached 99.3%, 86.2%, and 77.6% when adding CH4, CO, and without additive, respectively, at inlet additive/NO molar ratio (R) = 5 and at 120 W. Moreover, the fraction of total N atoms converted from NO into N2 (FN2) was very high, reaching 99.4% and 99.5% when adding CH4 and CO, respectively, at R = 1 and at 120 W. The better operating conditions are using CH4 as the additive at R ≥ 1 and a power of >60 W to reach a higher NO conversion with a higher FN2. How ever, it should be noted that this rf plasma approach is not practical at this stage because of its relative low pressure.
AB - Additives are often added to enhance the efficiency of NO removal. This study uses a radio frequency (rf) discharge to consider the effect of added CH4 and CO to simulated NO/N2/O2/H2O mixtures on the elevation of NO conversion and the reduction of NO into N2. The enhancement levels of NO conversion when using various additives were found to be in this order: +CH4 > CO > no additive. NO conversion reached 99.3%, 86.2%, and 77.6% when adding CH4, CO, and without additive, respectively, at inlet additive/NO molar ratio (R) = 5 and at 120 W. Moreover, the fraction of total N atoms converted from NO into N2 (FN2) was very high, reaching 99.4% and 99.5% when adding CH4 and CO, respectively, at R = 1 and at 120 W. The better operating conditions are using CH4 as the additive at R ≥ 1 and a power of >60 W to reach a higher NO conversion with a higher FN2. How ever, it should be noted that this rf plasma approach is not practical at this stage because of its relative low pressure.
UR - http://www.scopus.com/inward/record.url?scp=33847299630&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847299630&partnerID=8YFLogxK
U2 - 10.1080/10473289.2007.10465298
DO - 10.1080/10473289.2007.10465298
M3 - Article
C2 - 17269229
AN - SCOPUS:33847299630
SN - 1096-2247
VL - 57
SP - 47
EP - 52
JO - Journal of the Air and Waste Management Association
JF - Journal of the Air and Waste Management Association
IS - 1
ER -