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파일럿급 고온 연소가스 재순환방식의 마일드 연소로에서 고체연료의 연소 특성과 측정위치에 따른 배가스 분석결과에 대한 고찰 KCI 등재

Combustion Characteristics and Analyzing Results of Exhaust Gas of Solid Fuel with Measuring Position in a Pilot scale MILD Combustor using High Temperature Exhaust Gas Recirculation

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한국폐기물자원순환학회지 (Journal of Korea Society of Waste Management)
한국폐기물자원순환학회 (Korea Society Of Waste Management)
초록

Analyzing results of exhaust gas of solid fuel burning are investigated with measuring position in a pilot scale MILD(Moderate and Intense Low oxygen Dilution) combustor using high temperature exhaust gas recirculation. Flue gas hasbeen measured at exit of combustion chamber and stack, especially. Oxygen concentration measured at stack is higherand carbon dioxide concentration is lower than that measured at exit of combustion chamber, because air flows into theflue gas from the post-treatment facilities, such as gas cooler and bag filter, due to negative pressure caused by inducedblower. Low carbon dioxide concentration can cause an error which estimates higher air ratio than actual air flow rateneeded for complete combustion. Average calculated concentration of measured nitric oxide and carbon monoxide forreference concentration of 6% oxygen have no notable difference with measuring position. But, time resolution of thedata measured at exit of combustion chamber is better than that measured at stack. It is confirmed that MILD combustionof solid fuel of pulverized coal using high temperature exhaust gas recirculation can reduce dramatically nitric oxideemission.

저자
  • 심성훈(한국기계연구원 환경기계시스템연구실) | Sung-Hoon Shim Corresponding author