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http://dx.doi.org/10.3795/KSME-B.2002.26.6.833

Effects of Oxygen Concentration on the NOx Emission of Non-premixed Flame in Hot Exhaust Gas  

Sohn, Hwa-Seung (한국가스공사 연구개발원)
Kim, Ho-Young (고려대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.26, no.6, 2002 , pp. 833-841 More about this Journal
Abstract
The present study examined the possibility of NOx reduction in the high temperature industrial furnaces, duct burner of gas turbine cogeneration and two-stage gas turbine combustor. The experimental study was carried out for the non-premixed flame of second stage combustor with the variations of oxygen concentration in the hot exhaust gas of first stage combustor. It also examined the flammability range, temperature and NOx, $CO_2$, $O_2$formation in the combustor with respect to oxygen concentration in which the fuel(natural gas) is supplying into the hot exhaust gas. The results show that the inner temperature of flame reaches 1,20$0^{\circ}C$ at EGR $O_2$23% and that 15ppm of NOx at EGR $O_2$15.5% increases up to 60ppm at EGR $O_2$23%. It is believed that Fenimore＇s prompt NOx mechanism is more influential on the NOx formation than Zeldovich＇s thermal NOx mechanism does.
Keywords
NOx Emission; Non-premixed Combustion; NOx Formation; Exhaust Gas Reburning;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Graham J. Nathan and R. E. Luxton, 1992, Reduction NOx Emissions and Enhanced Large Scale Turbulence from a Precessing Jet Burner. 25 Symposium on Combustion Institute, pp. 1399-1405
2 Fujimori, T., Riechelmann, D. and Sato, J., 1997, 'Experimental Study of NOx Reduction by lifted Turbulent Jet Flame in Highly Preheated Flows,' The First Asia-Pacific Conference on Combustion, pp. 298-301, Japan
3 Yutaka Suzukawa, Shunichi Sugiyama, Yoshimochi Hino, Muneohiro Ishioka and Isao Mori, 1997, 'Heat Transter Improvement and NOx Reduction by Highly Preheated Air Combustion,' Energy Convers. Management, Vol. 38, No. 10-13, pp. 1061-1071   DOI   ScienceOn
4 Yutaka Suzukawa, Shunichi Sugiyama, Isao Mori, 1996, 'Heat Tranfer Improvement and Nox Reduction in an Industrial Furnace by Regenerative Combustion System,' Proceedings of the 31th Intersociety Energy Conversion Engineering Conference, pp. 804-809   DOI
5 Toshiaki Hasegawa and Ryoichi Tanaka, 1997, 'Combustion with High Temperature Low Oxygen Air in Regenerative Burners,' The First Asia-Pacific Conference on Combusion, pp. 290-293, Japan
6 Fenimore, C. P., 1971, 'Formation of Nitric Oxide in Premixed Hydrocarbon Flames,' Thirteenth International Symposium on Combustion, The Combustion Institute, Pittsburgh, pp. 373-379
7 Feese, J.J. and Turns, S. R., 'Nitric Oxide Emission from Laminar Diffusion Flames: Effects of Air-Side versus Fuel-Side Dilutent Addition,' Combustion and Flame, Vol 113, pp. 66-78, 1998   DOI   ScienceOn
8 Ohono, Y. Hisazumi, Y., 'Combustion Characterstics under Condition of Low-oxygen Atmosphere and High-level Steam Addition,' the 4th JSME-KSME Thermal Engineering Conference, October 2000, Kobe, Japen. A101
9 정대헌, 양제복, 노동순, 김원배,'고온, 1998, '희박공기연소에 관한 실험적 연구,' 한국연소학회, Vol. 3, pp. 49-57
10 유현석, 이중성, 한정옥, 1999, '천연가스 선회예혼합 화염의 NOx생성 및 배출특성,' 대한기계학회 논문집 B권, 제23권 제6호, pp. 786-794