0540 溶解および残留ガストラップに基づいたCO_2地下貯留に関する研究(S52-2 温室効果ガス排出抑制技術(2),S52 温室効果ガス排出抑制技術)

概要

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A CO_2 geological storage technology based on residual gas trapping and solubility trapping is proposed. First, we experimentally evaluated the residual CO_2 saturation for typical conditions of aquifers at the depth from 700m to 1,000m. The residual gas saturation is in the range from 25 to 30% in spite of the variation of CO_2 density, viscosity, and interfacial tension. At least 40% of CO_2 would be stored by residual gas trapping and solubility trapping as compared with the physical trapping by caprock. Finally, the storage potential of Japan by the proposed scheme is evaluated to be 101.8Gt-CO_2 that corresponds to Japanese CO_2 emission of 76 years.
一般社団法人日本機械学会の論文
2007-09-07