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Energies 2018, 11(10), 2735;

The Influence of Temperature on the Expansion of a Hard Coal-Gas System

Faculty of Energy and Fuels, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland
Author to whom correspondence should be addressed.
Received: 14 September 2018 / Revised: 3 October 2018 / Accepted: 10 October 2018 / Published: 12 October 2018
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This paper presents experimental results of the sorption-dilatometric kinetics of methane and carbon dioxide on a sample of hard coal from one of the coal mines in the Upper Silesian Coal Basin. The experiment included isothermal and non-isothermal-isobaric stages. For the isothermal stage, it was found that, up to a certain point (about 8 dm3/kg), the sample’s expansion was linearly related to the amount of gas absorbed. Studies on dilatometric kinetics under constant pressure, with a reduction in temperature, indicate that a dominant share of the heat-expanding properties of carbonaceous material influences changes in the size of the sample in the coal-gas system. It was also found that the sample expansion, due to temperature change, was 2.25‰, for the sample in both the vacuum and the non-adsorbing gas atmosphere. View Full-Text
Keywords: coal; methane; carbon dioxide; sorption; swelling coal; methane; carbon dioxide; sorption; swelling

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Baran, P.; Czerw, K.; Samojeden, B.; Czuma, N.; Zarębska, K. The Influence of Temperature on the Expansion of a Hard Coal-Gas System. Energies 2018, 11, 2735.

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