INFLUENCE OF INITIAL PARAMETERS OF GAS AND PULVERIZED COAL PARTICLES ON BURNING CHARACTERISTICS IN TUYERE HEARTH
Journal Title: Физика аэродисперсных систем - Year 2015, Vol 0, Issue 52
Abstract
Combustion of coke particles in the tuyere hearth is modeled taking into account Stephan flow, kinetics of oxidation and carbon gasification reactions, homogeneous oxidation reaction of carbon monoxide, turbulent heat and mass transfer and radiation heat transfer. Coal dust is blown by flow of hot oxygen-enriched air. Dependences are obtained, which allow to estimate the effect of coal dust mass concentration, coal particle size, temperature and mass fraction of oxygen in the air on mechanical burn-out, oxygen zone length and the gas composition. When choosing the optimum ratio between the particles diameter and the mass flow rate should be guided by a factor of excess oxygen in the feed mixture equal to 1.1-1.2.
Authors and Affiliations
V. V. Kalinchak, Yu. A. Zinchenko, A. S. Chernenko, R. D. Kuzemko
Keywords
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