10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
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Conversion of Sulfur Dioxide and Nitrogen Oxides to Particulate Matter
MYONG-HWA LEE, Woo Jin Lee, Han-Bin Kim, Jin Sik Kim, Korea Institute of Industrial Technology
Abstract Number: 644 Working Group: Control and Mitigation
Abstract Sulfur dioxide, nitrogen oxides as well as particulate matters are coexisted in flue gas. Flue gas desulfurization for sulfur dioxide and selective catalytic reduction for nitrogen oxides, are usual control technologies. However, the equipment are too expensive to apply to a small-scale combustor. A new approach which converts them to particulate matter, was challenged in this study. The resultant species can be easily removed in a bag house system. Sulfur dioxide concentration decreased drastically by injection of ammonia at the temperature of 200ºC. At the same time, drastic increase in particle number concentration was observed through the SMPS(Scanning Mobility Particle Sizer) measurement. However, there was no change in nitrogen monoxide concentration, even if the same amount of ammonia for SO2 removal was injected in flue gas. Therefore, the effect of further oxidation of nitrogen monoxide to nitrogen dioxide on particle formation was also investigated. The characteristics of gas to particle conversion will be discussed in this study.
Acknowledgment This work was supported financially by the Creative convergence research project of National Research Council of Science & Technology, Republic of Korea.