Spontaneous Combustion of Brown-Coal Dust. Experiment, Determination of Kinetic Parameters, and Numerical Modeling
S. P. Amel'chugov, V. I. Bykov* and S. B. Tsybenova**
Institute of Fire Prevention, Siberian Branch, Krasnoyarsk 660036;
*Institute of Computational Modeling, Siberian Division, Russian Academy of Sciences, Krasnoyarsk 660036;
**Krasnoyarsk State Technical University, Krasnoyarsk 660074, bykov@fivt.kgtu.runnet.ru
Pages: 295-300
Abstract
To study spontaneous combustion and explosion of brown-coal dust, an experimental setup was designed and a method for analysis of these processes was proposed. Kinetic parameters (activation energy and preexponent) of the brown coal from the Irsha--Borodino deposit were determined. It was shown in experiments that, for certain coal/oxidizer ratios, the explosion has a two-stage character. The repeated explosion of dust is caused by thermal activation of coal at the first stage of the explosion. Mathematical models for a qualitative description of spontaneous combustion of brown-coal dust are considered.
Key words: brown coal, spontaneous combustion of dust, kinetic parameters, numerical modeling.
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