EXPERIMENTAL RANGE TEST OF FLAME SPREAD IN DUST-AIR MIXTURES
A. A. Sechin1, Yu. F. Patrakov2, A. I. Sechin1
1National Research Tomsk Polytechnic University, Tomsk, 634050 Russia
2Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Kemerovo, 650065 Russia
Keywords: Угольная пыль, пожаровзрывоопасные свойства, экспериментальная установка, Coal dust, fire/explosion hazard characteristics, experimental plant
Abstract
The experimental procedure is presented for range test of critical flame spread in the conditions of uniform distribution of particles in dust cloud under varied temperature of the ignition initiation source. Fire and explosion hazard of coal dust is estimated by the method of successive approximations. The feasibility of studying the cold flame effect in inflammation of coal dust suspension in air and its transition to the hot mode burning when dust concentration grows is demonstrated, which is of importance for the theory of safety technology.
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