E3S Web Conf.
Volume 303, 2021The 10th Anniversary Russian-Chinese Symposium “Clean Coal Technologies: Mining, Processing, Safety, and Ecology” 2021
|Number of page(s)||7|
|Published online||17 September 2021|
Emission of gases from coal at low-temperature oxidation depending on the oxygen sorption rate
1 T.F. Gorbachev Kuzbass State Technical University, 650000, Russian Federation
2 Institute for Arid Ecology and Environment, Center for Underground Coal Fire, Xinjiang University Add.: No.666 Shengli Road, Urumqi city 830091, Xinjiang region, China
Coal oxidation by air oxygen can cause a process of spontaneous combustion with intense emission of carbon oxide and danger to initiate explosion of combustible gases. To detect the process of coal spontaneous combustion in mines, they use a gas analysis method providing control of concentrations of carbon oxide, hydrogen and hydrocarbons in the atmosphere. The conducted researches showed that at low-temperature oxidation of coal the intense emission of these gases without temperature increase is possible. Concentration of carbon oxide significantly increases with the growth of coal oxygen sorption rate. Ethylene and carbon dioxide show similar regularities. Acetylene is not found as a result of low-temperature oxidation of coal, and emission of hydrogen, methane, ethane, propane and propylene does not depend on the coal oxygen sorption rate.
© The Authors, published by EDP Sciences, 2021
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