| 초록 |
Nitrous oxide (N2O) is a strong greenhouse gas with global warming potential (GWP) which is much greater, by 310 times, than that of CO2. N2O having such effects and high GWP value would be significantly produced from NH3-SCR DeNOx (selective catalytic reduction of NOx by NH3) processes that are widely used for abating NOx from fossil fuel-fired power plants. The use of grab sampling for N2O analysis gives its formation in the sample during transport and storage, because of the simultaneous presence of NO, SO2 and H2O in the sample. In this study, an on-line continuous N2O monitoring system with IR equipped with a gas cell having an optical path of 10 meters was developed to measure N2O concentrations formed during NO-NH3-O2 reaction with commercial SCR catalysts. The IR system was evaluated for possible interferences such as SO2, H2O, CO2, CO and CH4. |
