SAFETY
Original Paper
UDC 622.807 ©A.A. Rybichev, 2023
ISSN 0041-5790 (Print) • ISSN 2412-8333 (Online) • Ugol’ – Russian Coal Journal, 2023, № 2, pp. 41-44
DOI: http://dx.doi.org/10.18796/0041-5790-2023-2-41-44
Title
ON THE QUESTION OF EVALUATION OF THE INFLUENCE OF HEAVY HYDROCARBONS ON THE EXPLOSIBILITY OF DUST-METHANE-AIR MIXTURES
Authors
Rybichev A.A.1
1National University of Science and Technology “MISIS” (NUST “MISIS”), Moscow, 119049, Russian Federation
Authors Information
Rybichev A.A., Postgraduatestudent, e-mail: rybichev@yandex.ru
Abstract
Tabular data on the main properties of saturated and unsaturated hydrocarbons, toxic combustible gases, which are the main explosive components of the mine atmosphere, are given. According to literary sources, it has been established that with a decrease in particle size, the lower concentration limit of explosibility of coal dust can decrease by up to 5.8 times. The explosive properties of ternary mixtures (coal dust + methane + air) are considered. It is shown that when the content of methane in the atmosphere is 2%, the lower explosive limit of coal dust can be reduced by 4 times. The potential fire and explosion hazard of coal seam gases is due to the presence of methane and its homologues (heavy hydrocarbons) in them, which, compared with methane, are more fire and explosion hazardous, since they have lower ignition temperatures and a lower concentration explosive limit.
Key words
Methane, Heavy hydrocarbons, Dust-methane-air mixture, Gas and dust explosion, Explosive limit.
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For citation
Rybichev A.A.On the question of evaluation of the influence of heavy hydrocarbons on the explosibility of dust-methane-air mixtures. Ugol’, 2023, (2), pp. 41-44. (In Russ.). DOI: 10.18796/0041-5790-2023-2-41-44.
Paper info
ReceivedNovember 30, 2022
Reviewed December 15, 2022
Accepted January 26, 2023
