The numerical analysis of the basic operating parameters of a low-NOx burner
Abstract
More importance than ever before is attached to reducing harmful gas emissions from industry, both in Poland and worldwide. Rising prices of gas emissions allowances, stricter criteria for suitability for use and the desire to protect the environment are driving the search for new technological solutions and logistics to deliver cost savings and lower emissions. The creation of an appropriate numerical model can translate into real savings as well as having other benefits. This paper presents a numerical analysis of the basic operating parameters of a low-emission swirl burner. The analyzed burner is a typical example of a burner with air staging. The burner was placed in a cylindrical combustion chamber. In the first stage, a cold flow analysis without reaction was performed showing the velocity profile, flow vectors and the flow of coal particles. Then calculations were carried out taking into account combustion of coal dust particles in the chamber. The analysis of combustion products, temperatures prevailing in the chamber and the content of nitrogen oxides is presented.References
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S.L.A.W.O.M.I.R. (2005) Flow charateristics of
a low NOx emission burner. Task Quarterly, 9 (1),
65{79.
13.Kurose, R., Makino, H., and Suzuki, A. (2004) Numerical
analysis of pulverized coal combustion characteristics
using advanced low-NOx burner. Fuel, 83
(6), 693{703.
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for industry furnaces. Low-emission technics,
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J.O.H.N.B., and KECK, J.A.M.E.S.C. (1970)
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Formation in Internal Combustion Engines.
Combustion Science and Technology, 1 (4), 313{326.
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premixed hydrocarbon
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tional) on Combustion, 13 (1), 373{380.
Kim, H.S. (2013) A numerical approach to reduction
of NOx emission from swirl premix burner in a gas
turbine combustor. Applied Thermal Engineering, 59
(1-2), 454{463.
2.Holkar, R. (2013) CFD Anlysis of Pulverised-Coal
Combustion of Burner Used In Furnace with Dierent
Radiation Models. IOSR Journal of Mechanical and
Civil Engineering, 5 (2), 25{34.
3.Dinesh, K.K.J.R., Luo, K.H., Kirkpatrick, M.P.,
and Malalasekera, W. (2013) Burning syngas in a
high swirl burner: Eects of fuel composition. In-
ternational Journal of Hydrogen Energy, 38 (21),
9028{9042.
4.GERMAN, A., and MAHMUD, T. (2005) Modelling
of non-premixed swirl burner
ows using a Reynoldsstress
turbulence closure. Fuel, 84 (5), 583{594.
5.Hubner, A.W., Tummers, M.J., Hanjalic, K., and
Meer, T.H. van der (2003) Experiments on a rotatingpipe
swirl burner. Experimental Thermal and Fluid
Science, 27 (4), 481{489.
6.Adamczyk, W.P., Werle, S., and Ryfa, A. (2014)
Application of the computational method for predicting
NO x reduction within large scale coal-red boiler.
Applied Thermal Engineering, 73 (1), 343{350.
7.Li, Z., Zeng, L., Zhao, G., Shen, S., and Zhang, F.
(2011) Particle sticking behavior near the throat of a
low-NOx axial-swirl coal burner. Applied Energy, 88
(3), 650{658.
8.Beckmann, A.M., Mancini, M., Weber, R., Seebold,
S., and Muller, M. (2016) Measurements and CFD
modeling of a pulverized coal
ame with emphasis on
ash deposition. Fuel, 167, 168{179.
9.JAMALUDDIN, A.S., and SMITH, P.J. (1988) Predicting
Radiative Transfer in Axisymmetric Cylindrical
Enclosures Using the Discrete Ordinates Method.
Combustion Science and Technology, 62 (4-6),
173{186.
10.Reis, L.C.B.S., Carvalho, J.A., Nascimento,
M.A.R., Rodrigues, L.O., Dias, F.L.G., and Sobrinho,
P.M. (2014) Numerical modeling of
ow through an
industrial burner orice. Applied Thermal Engineer-
ing, 67 (1-2), 201{213.
11.Giorgi, M.G.D., Ficarella, A., and Laforgia, D.
(2006) Optimization of an industrial coal pulverized
swirled burner by CFD modelling. 61 Congresso
Nazionale ATI, Perugia, Italy.
12.KARDAS, D.A.R.I.U.S.Z., and GOLEC,
S.L.A.W.O.M.I.R. (2005) Flow charateristics of
a low NOx emission burner. Task Quarterly, 9 (1),
65{79.
13.Kurose, R., Makino, H., and Suzuki, A. (2004) Numerical
analysis of pulverized coal combustion characteristics
using advanced low-NOx burner. Fuel, 83
(6), 693{703.
14.Weber, R. (1996) Reaserch on low-emission combustion
for industry furnaces. Low-emission technics,
Ustron-Zawodzie, Poland.
15.Zeldvich, Y.B. (1946) The oxidation of nitrogen in
combustion and explosions. J. Acta Physicochimica,
21, 577.
16.LAVOIE, G.E.O.R.G.E.A., HEYWOOD,
J.O.H.N.B., and KECK, J.A.M.E.S.C. (1970)
Experimental and Theoretical Study of Nitric Oxide
Formation in Internal Combustion Engines.
Combustion Science and Technology, 1 (4), 313{326.
17.Fenimore, C.P., and Jones, G.W. (1957) The
Water-Catalyzed Oxidation of Carbon Monoxide by
Oxygen at High Temperature. The Journal of Physi-
cal Chemistry, 61 (5), 651{654.
18.Fenimore, C.P. (1971) Formation of nitric oxide in
premixed hydrocarbon
ames. Symposium (Interna-
tional) on Combustion, 13 (1), 373{380.
- Fig. 2. Fuel staging in a low-emission dust burner
- Fig. 1. Air staging in a low-emission dust burner
- 3D representation of the model of a low-NOx swirl burner with visible swirling vanes
- Fig. 4. 3D model of the fluid flow area with the furnace
- Fig. 5. Mesh of the low-NOx swirl burner model
- Fig. 6. Velocity distribution [m/s] in a swirl burner along the YZ plane
- Fig. 7. Velocity vectors [m/s] in a swirl burner along the YZ plane – isometric view
- Fig. 8. Flow path of coal particles in the burner – colour depending on velocity [m/s]
- Fig. 9. Velocity distribution [m/s] in the burner along the YZ plane – reactions taken into account
- Fig. 10. The jet flow path through the burner and through the furnace – path colour depending on velocity [m/s]
- Fig. 11. Temperature distribution [K] in the burner and in the furnace – isometric view of the ZY and ZX planes
- Fig. 12. Carbon oxide mass fraction – isometric view of the YZ and YX planes
- Fig. 13. Carbon dioxide mass fraction – isometric view of the YZ and YX planes
- Fig. 14. Oxygen mass fraction – isometric view of the YZ and YX planes
- Fig. 15. Sulphur dioxide mass fraction – isometric view of the YZ and YX planes
- Fig. 16. Mass fraction of nitrogen oxides – isometric view of the YZ and YX planes
Published
2020-04-08
How to Cite
HERNIK, Bartłomiej; BRYMORA, Radosław.
The numerical analysis of the basic operating parameters of a low-NOx burner.
Journal of Power Technologies, [S.l.], v. 100, n. 1, p. 59-67, apr. 2020.
ISSN 2083-4195.
Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/803>. Date accessed: 03 dec. 2024.
Issue
Section
Combustion and Fuel Processing
Keywords
CFD modelling, low-NOx burner, combustion, coal
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