Comparative study on different coals from the Lorraine basin(France)by sorption isotherms,thermogravimetric analysis and breakthrough curves for CO2-ECBM recovery
Franck Amoih1
Gisèle Finqueneisel2
Thierry Zimny2
Sandrine Bourrelly3
Odile Barres1
Dragan Grgic1
1.Laboratoire GeoRessources,CNRS,Université de Lorraine,54500 Vandoeuvre-lès-Nancy,France2.Laboratoire de Chimie et de Physique-Approche Multi-échelles des Milieux Complexes(LCP-A2MC-EA 4632),Université de Lorraine,57500 Saint-Avold,France3.Laboratoire MADIREL,CNRS-UMR7246,Université Aix-Marseille,Centre de St Jérôme,13397 Marseille Cedex 20,France
摘要：The enhanced coalbed methane recovery using CO2 injection(CO2-ECBM)is widely proposed as a way of achieving the energy transition and reducing atmospheric CO2 in areas such as the Lorrain basin in France,where heavy industry is respon-sible for huge CO2 emissions and coal mines have been closed for more than a decade.This paper deals with the feasibility of extracting methane from the Lorraine basin using CO2-ECBM by comparing data from sorption isotherms,thermogravi-metric analyses and breakthrough curves for two coal samples.One is bituminous(Box 18),from Folschviller(France)and is compared with another sub-bituminous(TH01)from La Houve(France),which is used as a reference because it was identified as a good candidate for CO2-ECBM in a previous research program.The quantities of adsorbed gases(CO2/CH4)obtained by sorption isotherms,thermogravimetry and CO2 breakthrough curves showed that Box 18 adsorbs more CO2 and CH4 than TH01 due to its higher porosity and good affinity for gases(CO2/CH4).Tóth model fits the experimental CH4 and CO2 adsorption isotherms better,reflecting the fact that the adsorption surface of the coals studied is heterogeneous.Adsorp-tion enthalpies obtained by calorimetry indicated physisorption for gas-coal interactions,with higher values for CO2 than for CH4.Thermogravimetric analyses and breakthrough curves carried out at up to 50％relative humidity showed that the adsorption capacity of CO2 decreases with increasing temperature and the presence of water,respectively.The compilation of these experimental data explained the adsorption process of the studied coals and revealed their advantages for CO2-ECBM.
机标关键词：differentco2-ecbmrecoveryanalysisstudyfrombasinbreakthrough
论文发表日期：2024-08-28
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：19( 85-103 )
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