산업 보일러용 오일버너에서의 저 NOx 연소 연구
A Study on Low-NOx Combustion in an Oil Burner for an Industrial Boiler
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초록
A novel low NOx oil burner of 0.7 MW (for a 1 ton steam/hr industrial boiler) was designed and tested to investigate the combustion characteristics through in-flame measurement and flue gas analysis. Flame shape was observed by CCD camera and CH*/C2* radical distribution in the flame were observed, along with measurement of flue gas composition such as NOx and CO, for various heat inputs, excess airs and pressure of the fuel spary nozzles. The flame showed the two-zone structure: fuel-rich and fuel-lean zone, which was very favorable for the low-NOx combustion, and the NOx emission for haevy oil combustion was significantly reduced to < 150 ppm at 4 % O2 , compared with the NOx level of a conventional heavy oil burner.
Abstract
A novel low NOx oil burner of 0.7 MW (for a 1 ton steam/hr industrial boiler) was designed and tested to investigate the combustion characteristics through in-flame measurement and flue gas analysis. Flame shape was observed by CCD camera and CH*/C2* radical distribution in the flame were observed, along with measurement of flue gas composition such as NOx and CO, for various heat inputs, excess airs and pressure of the fuel spary nozzles. The flame showed the two-zone structure: fuel-rich and fuel-lean zone, which was very favorable for the low-NOx combustion, and the NOx emission for haevy oil combustion was significantly reduced to < 150 ppm at 4 % O2 , compared with the NOx level of a conventional heavy oil burner.
참고문헌 (6)
- W. F Farmayan, "The Control of Nitrogen Oxides Emission by Staged Combustion", 박사, pp.1980
- Ultra Reduced NOx Burner System and Process, "J. T. Kelly", ~, pp.US6485289 (2002)
- Low NOx Multistage Combustor, "Frederick E. Becker", ~, pp.US6089855 (2000)
- 최윤기, "시험용 연소로에서의 다단 저 NOx 버너의 실험 및 수치적 연구", 대한기계학회논문집 B, 28(11), pp.1339~1347 (2004), 대한기계학회
- 조은성, "다단연소기를 이용한 저 NOx 연소특성 연구", 대한기계학회논문집 B, 27(1), pp.5~ (2003), 대한기계학회
- 저공해 버너 부품 설계 생산 기술지원, "류태우", 산업자원부, ~ (2005)