JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Investigation of NO Formation Characteristics in Multi Staged Air Combustor
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Investigation of NO Formation Characteristics in Multi Staged Air Combustor
Kim, Han-Seok; An, Guk-Yeong; Baek, Seung-Uk; Yu, Myeong-Jong;
  PDF(new window)
 Abstract
In this study, a numerical simulation was developed which was capable of predicting the characteristics of NO formation in pilot scale combustor adopting the air-staged burner flame. The numerical calculation was constructed by means of establishing the mathematical models fur turbulence, turbulent combustion, radiation and turbulent nitric oxide chemistry. Turbulence was solved with standard k- model and the turbulent combustion model was incorporated using a two step reaction scheme together with an eddy dissipation model. The radiative transfer equation was calculated by means of the discrete ordinates method with the weighted sum of gray gases model for COand HO. In the NO chemistry model, the chemical reaction rates for thermal and prompt NO were statistically averaged using the probability density function. The results were validated by comparison with measurements. For the experiment, a 0.2 MW pilot multi-air staged burner has been designed and fabricated. Only when the radiation was taken into account, the predicted gas temperature was in good agreement with the experimental one, which meant that the inclusion of radiation was indispensable for modeling multi-air staged gas flame. This was also true of the prediction of the NO formation, since it heavily depended on temperature. Subsequently, it was found that the multi-air staged combustion technique might be used as a practical tool in reducing the NO formation by controlling the peak flame temperature.
 Keywords
radiative Transfer;Multi-Staged Air Flame;WSGGM;
 Language
Korean
 Cited by
1.
관류보일러에서 화염분할 VIStA 버너의 연소특성,안준;김혁주;최규성;

대한기계학회논문집B, 2012. vol.36. 4, pp.413-418 crossref(new window)
 References
1.
Fenimore, C. P., 1979 'Studies of Fuel-Nitrogen in Rich Flame Gases,' Seventeenth Symp. (Int.) Comb. /The combustion Institute, Pittsburgh, pp 661-669

2.
Smart, J. P. and Webber, R., 1989 'Reduction of NOx and Optimisation of Burnout with an Aerodynamically Air-Staged Burner and an Air-Staged Precombustor Burner.' Institute of Energy December, pp. 237-245

3.
Takashi, T. and Shigeru, S., 1996 'The Effect of Fuel-Air Mixing on NOx Formation III Non-Premixed Swirl Burners,' Twenty-Sixth Symposium (International) on Combustion./The Combustion Institute, 2733 - 2739

4.
Toqan, M.A., Beer, J. M., Jansohn. P., Sun. N., Testa. A., and Teare, J. D. 1992 'Low NOx Emission from Radially Stratified Natural Gas-Air Turbulent Diffusion Flames,' Twenty-Fourth Symposium (International)' on Combustion, The Combustion Institute, pp. 1391-1397

5.
Shihadeh, A. L., Toqan, M, A., Beer, J. M., Lewis, P. F., Teare, J. D., Jimenez, J. L., and Barta N. 1994 'Low NOx Emission from Aerodynamically Staged Oil-Air Turbulent Diffussion Flames,' ASME J. Combustion Modeling, Scaling and Air Toxins, Fact-Vol. 18, pp. 195-200

6.
Hampartsoumian, E., Nimmo, W., Pourkasanian, M. and Williams, A., 1996 'The Prediction of NOx Emission from Spray Combustion,' Combust. Sci, Tech., Vol. 93, pp. 153-172 crossref(new window)

7.
Hottel, H. C., and Sarofim, A. F., 1967 Radiative Transfer, Mc-Graw Hill, Inc.

8.
Choi, C. E., and Baek, S. W., 1996 'Numerical Analysis of a Spray Combustion with Nongray Radiation Using Weighted Sum Gray Gases Model,' Combust. Sci. Tech., Vol. 115, pp. 297-315 crossref(new window)

9.
Liou, T. M., Lien, W. Y., and Hwang, P. W., 1994 'Large-Eddy Simulations of Turbulent Reacting Flows in a Chamber with Gaseous Ethylene Injecting through the Porous Wall,' Combust. Flame, 99, pp. 591-600 crossref(new window)

10.
Yu, M. J. and Baek, S.W., 1999 'Modeling of a Pulvulized Coal Combustion with Non-Gray Gas Radiation Effects,' Proceeding of 17th International Colloquium on the Dynamics of Explosions and Reactive Systems, Heidelberg, Germany

11.
Missaghi, M., Pourkashanian, M., Williams, A., and Yap. L., 1991 'The Predictions of NO Emissions from an Industrial Burner,' Second European Conference on Industrial Furnaces and Boilers. Lisbon

12.
Beretta, A. and Mancini, N., 1996 'The Influence of the Temperature Fluctuations Variance on NO Predictions for Gas Flames,' Combust. Sci. Tech., Vol. 121, pp. 193-216 crossref(new window)

13.
안국영 1994 'A Study on the ignition and Combustion of Coal-Water Slury Droplet,' 한국과학기술원 박사학위논문

14.
Gosman, A. D., and Ideriah, F. J. K., 1976 TEACH-T : A General Computer Program for Two-Dimensional. Turbulent Recirculating Flow, Imperial College, London, U. K

15.
Chase, M., Jr., Davies, C.A., Downey, J. R. Jr., Frurip, D. J., Mcdonard, R. A., and Syverd, A. N., 1985 JANAF Thermochemical Tables, third edition, American Chemical Society and American Institute of Physics

16.
Versteeg, H. K., and Malalasekera, W., 1995 An Introduction to Computational Fluid Dynamics, Longman Scientific & Technical

17.
Smith, T. F., Shen, Z. F., and Friedman, J. N., 1982 'Evaluation of Coefficients for the Weighted Sum of Gray Gases Model,' ASME J. Heat Transfer, 104, pp. 602 - 608

18.
Peters, A. A. F., and Weber, R. 1995 'Mathmatical Modeling of 2.25MW Swirling Natural Gas Flame. Part 1: Eddy Break-up Concept for Turbulent Combustion; Probablity Function Approach for Nitric Oxide Formation,' Combust. Sci. Tech., 110-111, pp. 67-101

19.
Miller, J. A., and Bowman, C. T., 1989 'Mechanism and Modeling of Nitrogen Chemistry in Combustion,' Progress in Energy and Combustion Science, 10, pp. 287 - 338 crossref(new window)

20.
De Soete, G. G., 1975 Overall Reaction Rates of NO and N2 Formation from Fuel Nitrogen,' Fifteenth Symposium (International) on Combustion. The combustion Institute, pp. 1093 - 1102

21.
Choi, C. E., and Baek, S. W., 1996 'Numerical Analysis of a Spray Combustion with Nongray Radiation Using Weighted Sum Gray Gases Model,' Combust. Sci. Tech., 115, pp. 297 - 315 crossref(new window)

22.
Denison, M. K., and Webb, B. W., 1993 'A Spectral Line-Based Weighted-Sum-of Gray Gases Model for Arbitrary RTE Solvers,' ASME J. Heat Transfer, 115. pp. 1004-1012

23.
유명종, 2000 '열복사를 고려한 미분탄의 연소 및 NOx 배출현상에 관한 연구,' 한국과학기술원 박사학위논문

24.
Wild, P. N., and Faltsi-saravelou, O., 1995 'Mathmatical Modelling of a 2.25 MW Swirling Natural Gas Flame, Part 2: Conserved Scalar Approach for Turbulent Combustion,' Combust. Sci. Tech., 110-111, pp. 103-121