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Numerical analysis of the thermo-fluid-dynamic field in the combustion chamber of an incinerator plant

Author

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  • Costa, M.
  • Dell'Isola, M.
  • Massarotti, N.

Abstract

As the interest for energy recovery from waste incineration has increased over the years, concern for the impact such processes have on the environment has also grown. To reduce such an impact, the legislation enforced in Italy and Europe imposes important restrictions on the temperature of the exhausts in the combustion chamber, which must be kept above certain values depending on the type of waste that is being incinerated, for a given period of time. Such conditions can be rather difficult and certainly very expensive to monitor with acceptable accuracy. In this work, a numerical approach is presented for modelling waste combustion in a full scale incineration plant. Both solid and gas phase reactions are considered. Various modes of heat and mass transfer between the waste bed, the air and the combustion products are taken into account, as well as radiation from the combustion chamber walls and the combustion products. The temperature distribution in the combustion chamber is obtained considering either forced or mixed convection. It is therefore shown that neglecting buoyancy effects may lead to appreciable errors. Verification of the code performance is based on comparison with the results of an experimental campaign at a full scale plant in Italy.

Suggested Citation

  • Costa, M. & Dell'Isola, M. & Massarotti, N., 2009. "Numerical analysis of the thermo-fluid-dynamic field in the combustion chamber of an incinerator plant," Energy, Elsevier, vol. 34(12), pages 2075-2086.
    • Handle: RePEc:eee:energy:v:34:y:2009:i:12:p:2075-2086
    DOI: 10.1016/j.energy.2008.08.024
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    Cited by:

    1. Xu, H. & Lin, W.Y. & Dal Magro, F. & Li, T & Py, X. & Romagnoli, A., 2019. "Towards higher energy efficiency in future waste-to-energy plants with novel latent heat storage-based thermal buffer system," Renewable and Sustainable Energy Reviews, Elsevier, vol. 112(C), pages 324-337.
    2. Ameur, Houari & Bouzit, Mohamed, 2013. "Power consumption for stirring shear thinning fluids by two-blade impeller," Energy, Elsevier, vol. 50(C), pages 326-332.
    3. Borello, Domenico & Venturini, Paolo & Rispoli, Franco & Rafael, Saavedra G.Z., 2013. "Prediction of multiphase combustion and ash deposition within a biomass furnace," Applied Energy, Elsevier, vol. 101(C), pages 413-422.
    4. Yin, Chungen & Rosendahl, Lasse & Clausen, Sønnik & Hvid, Søren L., 2012. "Characterizing and modeling of an 88 MW grate-fired boiler burning wheat straw: Experience and lessons," Energy, Elsevier, vol. 41(1), pages 473-482.
    5. Ammar, M. & Chtourou, W. & Driss, Z. & Abid, M.S., 2011. "Numerical investigation of turbulent flow generated in baffled stirred vessels equipped with three different turbines in one and two-stage system," Energy, Elsevier, vol. 36(8), pages 5081-5093.
    6. Venturini, P. & Borello, D. & Iossa, C. & Lentini, D. & Rispoli, F., 2010. "Modeling of multiphase combustion and deposit formation in a biomass-fed furnace," Energy, Elsevier, vol. 35(7), pages 3008-3021.
    7. Costa, M. & Massarotti, N. & Indrizzi, V. & Rajh, B. & Yin, C. & Samec, N., 2014. "Engineering bed models for solid fuel conversion process in grate-fired boilers," Energy, Elsevier, vol. 77(C), pages 244-253.

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