Browse > Article
http://dx.doi.org/10.15231/jksc.2017.22.3.008

Formation of MILD Combustion using Co-flow MILD Combustor  

Lee, Pil Hyong (Division of Mechanical System Engineering, Incheon National University)
Hwang, Sang Soon (Division of Mechanical System Engineering, Incheon National University)
Publication Information
Journal of the Korean Society of Combustion / v.22, no.3, 2017 , pp. 8-16 More about this Journal
Abstract
MILD combustion was first developed to suppress thermal NOx formation in combustor for heating industrial furnaces. In this paper, the effect of co-flow MILD combustor geometry and operating conditions on the formation of MILD combustion was analyzed using 3 dimensional numerical simulation. The numerical simulations were carried out using ANSYS Fluent. The combustion and turbulence flow was modeled using the Eddy Dissipation Concept(EDC) model and realizable $k-{\varepsilon}$ model respectively. The results show that the high temperature region and average temperature decreased due to an increase in the air velocity and decrease the wall thickness of fuel nozzle. In particular, the MILD combustion flame was found to be stable with a combustion flame region at fuel velocity 10 m/s, air velocity 20 m/s, fuel nozzle thickness 1.0 mm, equivalence ratio 0.9, and outlet area ratio 40%.
Keywords
MILD Combustion; Co-flow combustor; Numerical simulation; Thermal NOx; EDC;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 S. R. Turns, "An Introduction to Combustion," McGraw Hill, 2000.
2 C. K. Law, "Combustion Physics," Cambridge University Press, 2006.
3 P. H. Lee, S. S. Hwang, "Formation of Lean Premixed Surface Flame Using Porous Baffle Plate and Flame Holder", J. Therm. Sci. Tech., Vol. 8, pp. 178-189, 2013.   DOI
4 P. H. Lee, K, J, Song, S. S. Hwang, "Combustion Characteristics of Cylindrical Premixed Combustor using Liquid Fuel by Self Evaporation", J. Korean Soc. Combust., Vol. 21, No. 3, pp. 7-15, 2016.   DOI
5 Y. K. Choi, K. T. Kang, K. S. Lim, D. W. Ko, Y. M. Kim, "Experimental and Numerical Study of Low NOx Multi-Staged Burner in the Test Combustor", Trans. Korean Soc. Mech. Eng. B, Vol. 28, No. 11, pp. 1339-1347. 2004.   DOI
6 M. W. Kang, Y. B. Yoon, S. K. Dong, "The effect of flue-gas recirculation on combustion characteristics of regenerative low NOx burner", The 25th KOSCO Symposium, pp. 97-104, 2002.
7 G. M. Choi, M. Katsuki, "Advanced Low Nox Combustion Using Highly Preheating Air", Energy Convers Manage, Vol. 42, pp. 639-652, 2001.   DOI
8 P. Li, B. B. Dally, J. Mi, F. Wang, "MILD oxy combustion of gaseous fuels in a laboratory scale furnace," Combust. Flame, Vol, 160, pp. 93-946, 2013.
9 J. Leicher, A. Giese, "Flameless Oxidation as a means to Reduce NOx Emissions in Glass Melting Furnaces," Int. J. of Thermodynamics, Vol. 16, No. 2, pp. 55-61, 2013.
10 P. H. Lee, S. S. Hwang, "Formation of Oxy-Fuel MILD Combustion under Different Operating Conditions", Trans. Korean Soc. Mech. Eng. B, Vol. 40, No. 9, pp. 577-587, 2016.   DOI
11 A. Cavaliere, M. D. Joannon, "Mild Combustion," Prog Energy Combust Sci, Vol.30, pp. 329-366, 2004   DOI
12 A. Parente, C. Galletti, L. Tognotti, "Effect of the combustion model and kinetic mechanism on the MILD combustion in an industrial burner fed with hydrogen enriched fuels," Int. J. Hydrogen Energy, Vol. 33, pp. 7553-7564, 2008.   DOI
13 K. Arghode, K. Gupta, "Effect of flow field for colorless distributed combustion(CDC) for gas turbine combustion", Appl Energy, Vol. 87, pp. 1631-1640, 2010   DOI
14 Fluent. Fluent 6.0, Lebanon, NH, 2002.
15 S. E. Hosseini, M. A. Wahid, "Investigation of bluff-body micro-flameless combustion," Energy Convers Manage, Vol. 88, pp. 120-128, 2014.   DOI
16 M. Frenklach, H. Wang, C. L. Yu, M. Goldenberg, C. Bowman, R. Hanson, D. Davidson, E. Chang, G. Smith, D. Golden, W. Gardiner, V. Lissianski, GRI-Mech-An Optimized Detailed Chemical Reaction Mechanism for Methane Combustion, Gas Research Institute Topic, Report GRI-95/0058, 1995.