Study of Ignition and Combustion of Two-Fraction Coal-Air Suspension

  • S. G. Orlovskaya I.I. Mechnikov Odessa National University
  • V. V. Kalinchak I.I. Mechnikov Odessa National University
  • O. N. Zuj I.I. Mechnikov Odessa National University
  • M. V. Liseanskaia I.I. Mechnikov Odessa National University
Keywords: сombustion, carbon, gas suspension, ignition

Abstract

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.

References


  1. V.V. Pomerancev. Bases of the Practical Theory of Burning [in Russian], (Energia, 1973).

  2. V.I. Babiy, Yu.F. Kuvaev. Combustion of Carbon Dust and Calculation of a Pulverized Coal Flare [in Russian], (Energoatomizdat, 1986).

  3. S.G. Orlovskaya, V.V. Kalinchak, O.N. Zuy, O.V. Mandel, S.V. Kachan. High-temperature heat and mass transfer and critical phenomena in the gas mixtures of carbon particles. Ukr. J. Phys. 56, 1304 (2011).

  4. S.G. Orlovskaya. Investigation of the regularities of combustion of gas suspensions of carbon particles. Phys. Chem. Solid State 16 (1), 210 (2015).

  5. V.V. Kalinchak, O.N. Zuj, S.G. Orlovskaya. The effect of the temperature and diameter of porous carbon particles on the kinetics of chemical reactions and heat and mass transfer with air. High Temper. 43 (5), 781 (2005).
    https://doi.org/10.1007/s10740-005-0123-3

  6. S.G. Orlovskaya, V.V. Kalinchak, O.N. Zuj. Effect of an internal reaction on the characteristics of high-temperature heat and mass transfer of gas suspensions of carbon particles. High Temper. 52 (5), 715 (2014).
    https://doi.org/10.1134/S0018151X14050149

  7. V.V. Kalinchak, S.G. Orlovskaya, A.I. Kalinchak, A.V. Dubinskiy. Heat and Mass Tranfer Between a Carbon Particle and Air in View of Stefan Flow and Heat Losses Due to Radiation. High Temper. 34 (1), 79 (1996).
Published
2018-06-18
How to Cite
Orlovskaya, S., Kalinchak, V., Zuj, O., & Liseanskaia, M. (2018). Study of Ignition and Combustion of Two-Fraction Coal-Air Suspension. Ukrainian Journal of Physics, 63(4), 370. https://doi.org/10.15407/ujpe63.4.370
Section
Surface physics