نتایج جستجو برای: spontaneous combustion of coal

تعداد نتایج: 21182611  

Journal: :Journal of the Southern African Institute of Mining and Metallurgy 2017

Farahnaz Eghbali Mohammad Reza Ehsani,

Tabas mines in Iran have coal sources which are suitable for use in metallurgy industries as coking coal. But the high sulfur content of this coal imposes severe limitations on its utilization as the sulfur oxide gases evolved from the combustion of high sulfur coals result in acid rains and corrosion of equipments. In this work, attempts have been made to reduce sulfur from high sulfur coa...

Journal: :Environmental Health Perspectives 1979
B D Goldstein

Combustion products derived from the burning of coal are definitely capable of producing adverse human health effects. No single component of the combustion product mixture is solely responsible. Rather, effects are due to a group of compounds, both gases and aerosols, in the effluents of stationary source combustion processes. Although incompletely defined, the individual components of the gas...

2016
James C. Hower Evan J. Granite David B. Mayfield Ari S. Lewis Robert B. Finkelman Mostafa Fayek

Coal and coal combustion byproducts can have significant concentrations of lanthanides (rare earth elements). Rare earths are vital in the production of modern electronics and optics, among other uses. Enrichment in coals may have been a function of a number of processes, with contributions from volcanic ash falls being among the most significant mechanisms. In this paper, we discuss some of th...

Journal: :AIP Advances 2022

For major coal mine spontaneous combustion caused by disasters every year, various scholars have studied and analyzed the conditions of predicted temperature. Coal is an inevitable disaster, but studying surface covering to damp can greatly reduce occurrence combustion. We oxygen absorption in pores tendency its own water content for coal. The model experiment was carried out, correlation betwe...

2006
B. K. SAWHNEY

The electrical conductivity of seeded (with potassium) combustion products of six varieties of Indian coal with enriched air have been analytically evaluated to investigate the feasibility of using them as working fuels for coal-tired MHD generators. The analysis takes into account the effect of sulphur and ash on the conductivity of combustion products.

2004
A. Askarova E. Karpenko V. Messerle A. Ustimenko

Traditional technologies of solid fuels incineration account for higher level of pollutant in comparison with incineration of liquid and gas fuels. However the fraction of heat and electric power generated at coal fired thermal power plants will increase and by 2020 will have exceeded 50%. Plasma activation promotes more effective and environmental friendly power coals incineration [1]. Effecti...

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