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A diffusion-relaxation model of pulverized fuel combustion

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Abstract

A model for pulverized fuel combustion with allowance for the microstate of the fuel is proposed. It was shown that the burning of a fuel particle having a microstructure follows the laws of external (diffusion) and internal (relaxation) kinetics. The influence of the diffusion-relaxation mechanism on the burnout time of a fuel particle with a polymeric microstructure, its stressed state, and the pulverized fuel flame length was analyzed. The ranges of pulverized-fuel combustion parameters in which the flame length is determined by the fuel combustion or the gas jet mixing mechanism were distinguished.

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Authors and Affiliations

  1. Kutateladze Institute of Thermal Physics, Siberian Division, Russian Academy of Sciences, pr. Akademika Lavrent’eva 1, Novosibirsk, 630090, Russia

    V. I. Popov

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  1. V. I. Popov
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Correspondence to V. I. Popov.

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Original Russian Text © V.I. Popov, 2007, published in Khimiya Tverdogo Topliva, 2007, No. 4, pp. 39–49.

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Popov, V.I. A diffusion-relaxation model of pulverized fuel combustion. Soil Fuel Chem. 41, 225–233 (2007). https://doi.org/10.3103/S0361521907040076

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  • DOI: https://doi.org/10.3103/S0361521907040076

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