F203 CO_2地下貯留のための岩石および鉱物のCO_2収着特性に関する研究(OS11 温暖化対策とCO_2削減技術),動力エネルギーシステム部門20周年,次の20年への新展開)

概要

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CO_2 sorption experiments for Berea sandstone, Kimachi sandstone, shale, serpentine, granite, quartz, and albite were conducted using the gravimetric method under air dry conditions at 50℃ and 100℃, and pressures up to 20 MPa. In higher pressures (>10 MPa), Berea sandstone has shown a significantly higher sorption capacity compared to the other samples at both 50℃ and 100℃. It is also shown that the major component minerals for the rocks tested in this study (quartz and albite) have a CO_2 sorption behavior. Comparison of model prediction which assumes that the CO_2 storage capacity of the rock mass is equal to the amount of CO_2 used to fill the pore volume in the rock, suggests that the CO_2 sorption is an additional CO_2 storage mechanism in storing CO_2 process. The present results indicate that the CO_2 sorption characteristics may provide a significant and meaningful effect on the assessment of CO_2 storage potential in geological storage.
一般社団法人日本機械学会の論文
2010-06-20