employee
Irkutsk State Technical University (Department of Industrial Ecology and Life Safety, 1st category training master)
employee
Irkutsk, Irkutsk region, Russian Federation
The problem of endogenous fires in coal mining caused by spontaneous combustion of coal and accompanied by uncontrolled emission of smoke, aerosol particles of black carbon (soot) is considered. Endogenous fires create environmental risks for the population, contribute to the accumulation of carbon in the Earth's atmosphere and provide climate change over large areas due to the aerosol effect. The results of experimental studies on the assessment of the smoke-forming capacity of coals, the mass of black carbon (soot), its fractional composition are presented. It has been established that the smoke-forming capacity and, accordingly, the aerosol content depend on the nature of coal, its fractional composition, and the combustion process itself. The mass of combustion products depends on the nature of coal, the maximum of sulfur oxides is released in the processes of smoldering of coal from the Cheremkhovskoye deposit, and nitrogen and carbon oxides – brown coals from the Azeysky and Borodinsky open-pit mines. The maximum amount of aerosol particles – black carbon – is formed in the processes of smoldering of coal. Consequently, from the point of view of environmental risks for the population, endogenous fires in coal deposits pose the greatest danger. The experimental data obtained by the authors of this publication on the assessment of the smoke-forming mass of different coals, the mass of black carbon (soot) formed in the combustion and smoldering mode, fractional composition, can be used in predictive assessments of the environmental consequences of spontaneous combustion of coals occurring at enterprises, as well as climate change problems.
coal mining, hard and brown coals, endogenous fires, fine suspended particles, aerosols, smoke-forming capacity, black carbon, soot, environmental risks
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