Study of Ignition and Combustion of Two-Fraction Coal-Air Suspension
Keywords:сombustion, carbon, gas suspension, ignition
A two-fraction dust-air mixture is the simplest example of polydisperse suspensions. We aim to study the characteristics of ignition and combustion of a two-fraction suspension of carbon particles in air at different temperatures. The main characteristics of the dispersed fuel combustion are the ignition delay, burning temperature and time, and critical parameters (temperature, diameters of particles, and mass concentrations) corresponding to the fuel ignition and extinction. The high-temperature heat and mass transfer and chemical kinetics are modeled for a two-fraction particles-gas suspension (diameter of fine particles 60 мm and for that with coarse particles 120 мm) with equal mass fractions. The gas temperature is varied in the interval between 1100 K and 1500 K.
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