• Ivan D Tomanović, Laboratory for Thermal Engineering and Energy, Vinča Institute of Nuclear Sciences, Serbia
  • Srđan Belošević, Laboratory for Thermal Engineering and Energy, Vinča Institute of Nuclear Sciences, Serbia
  • Miroslav A Sijerčić, Laboratory for Thermal Engineering and Energy, Vinča Institute of Nuclear Sciences, Serbia
  • Vladimir B Beljanski, Laboratory for Thermal Engineering and Energy, Vinča Institute of Nuclear Sciences, Serbia
  • Dragan Tucaković, Faculty of Mechanical Engineering, University of Belgrade, Serbia
  • Titoslav Živanović, Faculty of Mechanical Engineering, University of Belgrade, Serbia
  • Stevan Đ Nemoda, Laboratory for Thermal Engineering and Energy, Vinča Institute of Nuclear Sciences, Serbia

Numerical optimisation of processes in the furnace considering NOx emission and efficiency of utility boiler

  • Mathematical model, aimed for prediction of processes in TE Kostolac B power plant utility boiler furnace tangentially fired by pulverized lignite, was developed in-house. The model was applied in numerical analysis of boiler operation, in order to reduce NOx emission by combustion modifications in the furnace, while maintaining high efficiency of the boiler unit. Complex two-phase gas-particle flow was modelled using Euler-Lagrange approach. Coupling between phases was done by using PSI-Cell concept. In order to perform necessary analysis, NO formation/destruction sub-model was implemented, within comprehensive combustion code, used to predict emission from the furnace. Thermal and fuel NO were modelled, as the most influential nitrogen oxides during pulverized coal combustion process. The computational code was developed to be easily used by engineering staff dealing with the process analysis in boiler units. Numerical simulations were performed for the boiler fired by the lignite Drmno, under different operating conditions. Contradictory requirements with respect to emission reduction and efficient combustion with safe operation of super-heaters often require boiler to operate within narrow limits of operation parameters, which is determined by means of the boiler thermal calculation.
  • Keywords
    mathematical model, thermal calculation, boiler furnace, pulverized coal, NOx emission
  • Pages
    61 - 74
  • Submitted
    04/10/2013
  • Revised
    11/10/2013
  • Accepted
    12/15/2013
  • BIBLID
    0350-218X, 39 (2013), 1-2, 61-74
  • References
    • Zhou, H., et al., Numerical Simulation of the NOx Emissions in a 1000 MW Tangentially Fired Pulverized-Coal Boiler: Influence of the Multi-Group Arrangement of the Separated over Fire Air, Energy & Fuels, 25 (2011), 5, 2004-2012
    • Chui, E.H., Gao, H., Estimation of NOx Emissions from Coal-Fired Utility Boilers, Fuel, 89 (2010), 10, 2977-2984
    • Tian, Zh. F., et al., Numerical Modeling of Victorian Brown Coal Combustion in a Tangentially Fired Furnace, Energy & Fuels, 24 (2010), 9, 4971-4979
    • Karampinis, E., et al., Numerical Investigation Greek Lignite/Cardoon Co-Firing in a Tangentially Fired Furnace, Applied Energy, 97 (2012), pp. 514-524, doi: 10.1016/j.apenergy.2011. 12.032
    • Fan, J., et al., Modeling of Combustion Process in 600 MW Utility Boiler using Comprehensive Models and its Experimental Validation, Energy & Fuels, 13 (1999), 5, 1051-1057
    • Karpenko, E.I., Messerle, V.E., Ustimenko, A.B., Plasma-Aided Solid Fuel Combustion, 31st Symposium on Combustion, Heidelberg, Germany, 2006, Proceedings the Combustion Institute, Pittsburg, Penn., USA, 2007, Vol. 2, 3353-3360
    • Zeng, L., et al., Numerical Simulation of Combustion Characteristics and NOx Emissions in a 300 MWe Utility Boiler with Different Outer Secondary-Air Vane Angles, Energy & Fuels, 24 (2010), 10, 5349-5358
    • Chen, Zh., Li, Zh., Zhu, Q., Jing, J., Gas/Particle Flow and Combustion Characteristics and NOx Emissions of a New Swirl Coal Burner, Energy, 36 (2011), 2, 709-723
    • Modlinski, N., Computational Modeling of a Utility Boiler Tangentially-Fired Furnace Retrofitted with Swirl Burners, Fuel Processing Technology, 91 (2010), 11, 1601-1608
    • Coelho, L.M.R., Azevedo, J.L.T., Carvalho, M.G., Application of a Global NOx Formation Model to a Pulverized Coal Fired Boiler with Gas Reburning, Proceedings, 4th International Conference on Technologies and Combustion for a Clean Environment, Lisbon, Portugal, July 7-10, 1997, Paper 9.4, 1/8-8/8
    • Xu, M., Azevedo, J.L.T., Carvalho, M.G., Modelling of the Combustion Process and NOx Emission in a Utility Boiler, Fuel, 79 (2000), 13, 1611-1619
    • Zheng, Ch., et al., Numerical and Experimental Investigation on the Performance of a 300 MW Pulverized Coal Furnace, Proceedings of the Combustion Institute, 29 (2002), 1, 811-818
    • He, R., et al., Analysis of Low NO Emission in High Temperature Air Combustion for Pulverized Coal, Fuel, 83 (2004), 9, 1133-1141
    • Li, K., Thompson, S., Peng, J., Modelling and Prediction of NOx Emission in a Coal-Fired Power Generation Plant, Control Engineering Practice, 12 (2004), 6, 707-723
    • Diez, L.I., Cortes, C., Pallares, J., Numerical Investigation of NOx Emissions from a Tangentially-Fired Utility Boiler under Conventional and Overfire Air Operation, Fuel, 87 (2008), 7, 1259-1269
    • Belošević, S., et al., A Numerical Study of a Utility Boiler Tangentially-Fired Furnace under Different Operating Conditions, Fuel, 87 (2008), 15-16, 3331-3338
    • Belošević, S., et al., Numerical Prediction of Pulverized Coal Flame in Utility Boiler Furnaces, Energy & Fuels, 23 (2009), 11, 5401-5412
    • Belošević, S., et al., Numerical Analysis of NOx Control by Combustion Modifications in Pulverized Coal Utility Boiler, Energy & Fuels, 26 (2012), 1, 425-442
    • Belošević, S., et al., Three-Dimensional Modeling of Utility Boiler Pulverized Coal Tangentially Fired Furnace, International Journal of Heat and Mass Transfer, 49 (2006), 19-20, 3371-3378
    • Belošević, S., Sijerčić, M., Stefanović, P., A Numerical Study of Pulverized Coal Ignition by Means of Plasma Torches in Air-Coal Dust Mixture Ducts of Utility Boiler Furnaces, International Journal of Heat and Mass Transfer, 51 (2008), 7-8, 1970-1978
    • Hashimoto, N., et al., A Numerical Analysis of Pulverized Coal Combustion in a Multiburner Furnace, Energy & Fuels, 21 (2007), 4, 1950-1958
    • Makovička, J., Mathematical Model of Pulverized Coal Combustion, Ph. D. thesis, Czech Technical University, Prague, Czech Republic, 2008
    • Straka, R., Beneš, M., Numerical Simulation of NO Production in Air-Staged Pulverized Coal Fired Furnace, The Open Thermodynamics Journal, 4 (2010), Special Issue: Numerical Analysis of Heat and Mass Transfer in Energy Conversion Systems, 27-35
    • Lockwood, F.C., Romo-Millares, C.A., Mathematical Modeling of Fuel NO Emissions from PF Burners, Journal of the Institute of Energy, 65 (1992), 144-152
    • Hill, S.C., Smoot, L.D., Modeling of Nitrogen Oxides Formation and Destruction in Combustion Systems, Progress in Energy and Combustion Science, 26 (2000), 4-6, 417-458
    • Eaton, A.M., Smoot, L.D., Hill, S.C., Eatough, Components, Formulations, Solutions, Evaluation, and Application of Comprehensive Combustion Models, Progress in Energy and Combustion Science, 25 (1999), 4, 387-436
    • Sijerčić, M., Matematičko modeliranje kompleksnih turbulentnih transportnih procesa, Jugoslovensko društvo termičara i Institut za nuklearne nauke “Vinča”, Beograd, 1998
    • Belošević, S., Prilog modeliranju procesa u ložištu kotla za sagorevanje ugljenog praha, Doktorska disertacija, Beograd, 2003
    • Hottel, H., Sarofim, A., Radiative Transfer, McGraw-Hill, New York, 1967
    • Patankar, S., Numerical Heat Transfer and Fluid Flow, Hemisphere Publ., Washington, USA, 1980
    • Stone, H.L., Iterative Solution of Implicit Approximations of Multidimensional Partial Differential Equations, SIAM Journal on Numerical Analysis, 5 (1968), 530-558
    • De Soete, G., Overall Reaction Rates of NO and N2 Formation from Fuel Nitrogen, 15th Symposium on Combustion, Tokyo, Japan, Proceedings, The Combustion Institute, Pittsburgh, Penn., USA, 1975
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