Mathematical model for heat transfer and combustion in a pulverized coal flame

Abstract

A mathematical model for the heat transfer and combustion of a single coal particle is presented. The model correctly predicts the time of the reaction steps and the temperature of the coal particle during ignition and combustion. Results are given of calculations of the combustion of single coal particles of the hard coal and brown Nazarovo coal at various oxygen concentrations and ambient temperatures. The results of combustion experiments with Irsha-Borodino coal on a combustion test facility are in good agreement with the results of three-dimensional numerical modeling of a pulverized coal flame.