期刊
ENERGIES
卷 11, 期 10, 页码 -出版社
MDPI
DOI: 10.3390/en11102735
关键词
coal; methane; carbon dioxide; sorption; swelling
资金
- National Science Centre in Poland [2017/01/X/ST10/00926]
- National Science Centre
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 dm(3)/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 parts per thousand, for the sample in both the vacuum and the non-adsorbing gas atmosphere.
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