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Heat and Mass Transfer

, 46:1 | Cite as

Numerical investigation of full scale coal combustion model of tangentially fired boiler with the effect of mill ducting

  • Daniela AchimEmail author
  • J. Naser
  • Y. S. Morsi
  • S. Pascoe
Original

Abstract

In this paper a full scale combustion model incorporating upstream mill ducting of a large tangentially fired boiler with flue gas recirculation was examined numerically. Lagrangian particle tracking was used to determine the coal particle paths and the Eddy Dissipation Model for the analysis of the gas phase combustion. Moreover volatiles and gaseous char products, given off by the coal particles were modelled by Arrhenius single phase reactions and a transport equation was solved for each material given off by the particles. Thermal, prompt, fuel and reburn NO x models with presumed probability density functions were used to model NO x production and the discrete transfer radiation model was used to model radiation heat transfer. Generally, the findings indicated reasonable agreement with observed qualitative and quantitative data of incident heat flux on the walls. The model developed here could be used for a range of applications in furnace design and optimisation of gas emissions of coal fired boiler plants.

Keywords

Turbulent Kinetic Energy Coal Particle Central Vortex Char Combustion Incident Heat Flux 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors gratefully acknowledge the support of this study by the Victorian State Government under its Energy Technology Innovation Strategy program and the Latrobe Valley generators (TRU Energy).

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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Daniela Achim
    • 1
    Email author
  • J. Naser
    • 2
  • Y. S. Morsi
    • 2
  • S. Pascoe
    • 3
  1. 1.Department of Chemical EngineeringMonash UniversityClaytonAustralia
  2. 2.Faculty of Engineering and Industrial SciencesSwinburne University of TechnologyHawthornAustralia
  3. 3.Yallourn EnergyMoeAustralia

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