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Faisabilité du stockage du CO2 en gisement houiller et étude de l’adsorption du CO2 sur le charbon

Abstract : Since 2006, the VELCO2 project initiated by INERIS studied the geological storage of CO2 in unminable coal seams. Two coal basins have been identified for a possible storage in France: Lorraine basin and Arc basin in Provence. Coal samples originated from these basins were selected to perform CO2 and CH4 sorption experiments with a suspension magnetic balance at INERIS. Several conclusions may be made: (i) CO2 is twice more adsorbed than CH4, (ii) the moisture of coal is a parameter that negatively influences the adsorption capacity of gases, (iii) the sorption capacity of CO2 on coal decreases with increasing temperature, but the sorption kinetics is accelerated. Experiments have shown that the interaction between coal and CO2 is essentially a physical sorption and that the diffusion coefficient of CO2 is about 10−12 m2 s−1. From laboratory results, CO2 capacity storage has been evaluated for the two areas studied. These estimations are promising and show that the storage of CO2 emitted by nearby energy facilities would be feasible for one to several decades. The feasibility was also studied from the economic point of view. All elements investigated show the interest of studying further this way of storing CO2 - provided we success in enhancing the diffusivity of CO2 within coal. High sorption potential of CO2 also suggests that it will be possible to recover methane that is initially adsorbed in coal (Enhanced Coal Bed Methane ECBM).
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Submitted on : Thursday, September 6, 2018 - 1:04:59 PM
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  • HAL Id : ineris-01869259, version 1



Zbigniew Pokryszka, Delphine Charriere, Jean-Marc Brignon. Faisabilité du stockage du CO2 en gisement houiller et étude de l’adsorption du CO2 sur le charbon. Rapport Scientifique INERIS, 2009, 2008-2009, pp.104-106. ⟨ineris-01869259⟩



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