Coalbed methane (CBM) production combined with carbon dioxide (CO2) injection is currently an issue of intense investigation worldwide. On the European level, the feasibility of CO2 storage in coal seams is currently being investigated in the RECOPOL project, which involves laboratory tests, numerical modeling, and a pilot injection into a Carboniferous coal seam in Silesia/Poland. Apart from the thermodynamic processes in a coal seam, one aspect of major importance for CO2 storage and CO2-enhanced CBM recovery is the rate of CO2 adsorption and CH4 desorption. To address this issue, adsorption kinetic experiments with both CO2 and CH4 were performed on six different grain size fractions (>0.063 mm to ∼3 mm) of a coal sample from the Upper Silesian Coal Basin in Poland. Experiments were run on dry and moist coals at two different temperatures (45 and 32°C). The purposes of this study were: (1) to define a simple empirical model describing the adsorption rates of the two gases, (2) to attempt an extrapolation of the data from the laboratory to the reservoir scale, (3) to relate sorption isotherms to different coal properties of different particle sizes, and (4) to contribute to a better understanding of the combined C02-storage and CBM-production technologies.
|Title of host publication||Greenhouse Gas Control Technologies 7|
|Subtitle of host publication||Proceedings of the 7th International Conference on Greenhouse Gas Control Technologies 5– September 2004, Vancouver, Canada|
|Number of pages||4|
|Publication status||Published - 2005|
ASJC Scopus subject areas