| Title |
Experimental Analysis and Evaluation of NO Oxidizer Performance for Reducing Nitrogen Oxides Inside Smelter Flue Gas |
| Authors |
Dae-Gyun Lee ; Ju-Hyung Park ; Junsu Park ; Junghoon Yoo ; Hangjoo Shin ; Young-Hoon Noh ; Sungho Choi ; Seungchang Kang ; Jongwon Choi |
| DOI |
https://doi.org/10.6110/KJACR.2025.37.6.259 |
| Keywords |
배기배출물질; NO 산화제; NOx 저감기술; 선택적 촉매 환원법 Emission gas; NO oxidizer; NOx reduction technology; Selective catalytic reduction |
| Abstract |
Nitrogen oxides (NOx) are significant pollutants generated in large quantities during production processes of domestic smelting facilities, arising primarily from fossil fuel combustion. Due to their harmful environmental and health impacts, NOx emissions are subject to stringent global regulations. The selective catalytic reduction (SCR) method using ammonia is widely employed for NOx mitigation. However, this approach is economically challenging due to its high consumption of ammonia, reliance on costly metal oxide catalysts, and necessity of maintaining elevated operating temperatures. Additionally, the predominant component of NOx, nitric oxide (NO), exhibits low solubility in water, resulting in limited reduction efficiency. To address these limitations, research has increasingly focused on pre-oxidizing NO into nitrogen dioxide (NO2) to enhance its solubility and facilitate removal via wet absorption techniques. In this study, the actual performance of NOx emissions from smelting facilities was analyzed under various conditions, considering the type of oxidizing agent, temperature, and concentration. Oxidation rates were systematically measured. Experiments combining oxidation and absorption were conducted to evaluate the efficiency of NOx removal. This research aims to provide insights into optimizing NOx reduction strategies for smelting processes. |