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The vitrinite components from coal of different metamorphic stages are studied by thermogravimetric analysis in an oxidative medium and by Raman spectroscopy. For vitrinites of greater metamorphic development, the oxidative temperatures rise, while the maximum rate of decomposition is shifted to...
Ozone is employed to accelerate oxidation and hence shorten experiments regarding the susceptibility of coal to oxidation and self-ignition. To avoid profound oxidative destruction of the coal sample, experiments are conducted at 25°C and low ozone concentrations (~10 mg/L). The influence of the...
The measurement error in direct determination of the gas content within a coal bed is considered. The best known methods of direct determination are based on sorption theory and fail to take into account that most methane within the bed is in solid solution. Accordingly, a different method is...
Coke dust from coke plants is investigated. Its granulometric composition is analyzed, as well as the content of mineral components in particles of different size. The initial coke dust is enriched by oil agglomeration. The utility of the resulting coke–oil concentrate in coking is considered.
Sorbents are produced from Barandatsk lignite by single-stage chemical activation using a mixture of ZnCl3 and FeCl3 and from Egozovo–Krasnoyarsk coal by two-stage chemical activation (activation by KOH followed by modification with FeCl3). On activation by ZnCl3 and FeCl3, the pore structure...
The physicochemical characteristics of the carbon material produced by methane conversion in UHF discharge plasma are determined. The material is characterized by high carbon content (99.4 wt %); the calorific value is 32.7 MJ/kg; and the packing density is 25.5 kg/m3. According to X-ray phase...
The combustion of gaseous fuel in burners in the presence of electromagnetic fields is considered. Activation of the gas fluxes by the field improves the combustion efficiency and decreases atmospheric emissions of toxic oxides. On activation, methane is converted to hydrogen, ethane, and...
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