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Maximum combustion temperature for coal-water slurry containing petrochemicals

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  • Strizhak, Pavel A.
  • Vershinina, Ksenia Yu.

Abstract

This study examines the temperature change of droplets of coal-water slurry containing petrochemicals (CWSP). The slurry consists of coal and oil processing waste. The temperature of oxidant in a modelled combustion chamber is varied between 600 and 1200 K. The initial size (radius) of CWSP droplets varied in the range of 0.5–3 mm. The study identifies typical temperature trends at the center and on the surface of the CWSP droplet. The temperature trends represent the following stages: (i) heating of fuel, (ii) evaporation of water and a liquid combustible component, (iii) thermal decomposition of coal and yield of volatiles, (iv) gas phase ignition of volatiles together with vapor of the combustible liquid, and (v) heterogeneous ignition of carbon and its burnout. Moreover, these trends indicate the maximum combustion temperatures of CWSP that reflect corresponding heat release. The study specifies the parameters which influence the maximum combustion temperature: fuel component composition, properties of components, droplet size, and the oxidant temperature. Finally, the study defines the minimum ignition temperatures and delay times of sustainable combustion initiation that characterize the ignition inertia. The knowledge of influence of these factors will allow one to predict the optimal conditions for the combustion of the CWSP.

Suggested Citation

  • Strizhak, Pavel A. & Vershinina, Ksenia Yu., 2017. "Maximum combustion temperature for coal-water slurry containing petrochemicals," Energy, Elsevier, vol. 120(C), pages 34-46.
    • Handle: RePEc:eee:energy:v:120:y:2017:i:c:p:34-46
    DOI: 10.1016/j.energy.2016.12.105
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    References listed on IDEAS

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    Cited by:

    1. Galina Nyashina & Pavel Strizhak, 2018. "Impact of Forest Fuels on Gas Emissions in Coal Slurry Fuel Combustion," Energies, MDPI, vol. 11(9), pages 1-16, September.
    2. Vershinina, K. Yu & Shlegel, N.E. & Strizhak, P.A., 2019. "Relative combustion efficiency of composite fuels based on of wood processing and oil production wastes," Energy, Elsevier, vol. 169(C), pages 18-28.
    3. Galina Nyashina & Jean Claude Legros & Pavel Strizhak, 2017. "Environmental Potential of Using Coal-Processing Waste as the Primary and Secondary Fuel for Energy Providers," Energies, MDPI, vol. 10(3), pages 1-11, March.
    4. Agnieszka Saramak & Daniel Saramak, 2022. "Coal Modeling Investigations in International Collaboration in the Light of Bibliometric Analysis of the Problem," Energies, MDPI, vol. 15(16), pages 1-20, August.

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