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This article is cited in 8 scientific papers (total in 8 papers)
Initiation of combustion of coal particles coated with a water film in a high-temperature air flow
A. V. Zakharevicha, G. V. Kuznetsova, V. V. Salomatovb, P. A. Strizhacka, S. V. Syrodoya a Tomsk Polytechnical University, Tomsk, 6340050, Russia
b Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
Abstract:
Results of an experimental study of ignition of a water–coal fuel in a high-temperature air flow are presented. The fuel is obtained on the basis of the mark D coal or filtrational cake of the Severnaya dressing plant. Based on the experimental results, physical and mathematical models of the processes of thermal preparation and ignition of water-coal fuel particles are formulated, which take into account the joint proceeding of the most relevant physical and chemical transformations (which exert an essential effect on the ignition condition) and the processes of heat and mass transfer during the induction period. A comparison of the basic ignition characteristics (ignition delay time and limiting values of the gas medium temperature), which are obtained experimentally and theoretically (based on results of numerical simulations), leads to a conclusion that the water film affects the dynamics of the ignition process.
Keywords:
water–coal fuel, ignition, heat and mass transfer, thermal decomposition, evaporation, water film, ignition delay time, evaporation time.
Received: 01.10.2015 Revised: 10.03.2016
Citation:
A. V. Zakharevich, G. V. Kuznetsov, V. V. Salomatov, P. A. Strizhack, S. V. Syrodoy, “Initiation of combustion of coal particles coated with a water film in a high-temperature air flow”, Fizika Goreniya i Vzryva, 52:5 (2016), 62–74; Combustion, Explosion and Shock Waves, 52:5 (2016), 550–561
Linking options:
https://www.mathnet.ru/eng/fgv353 https://www.mathnet.ru/eng/fgv/v52/i5/p62
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