| Project/Area Number |
24760159
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thermal engineering
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
UEMURA Suguru 東京工業大学, 理工学研究科, 助教 (70515163)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 物質輸送 / CO2地中隔離 / ナノスケール / 多孔質内二相流 / X線CT / 微粒化 |
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| Research Abstract |
CO2 geological sequestration is one of the most feasible methods for substantial reduction of CO2 emissions into the atmosphere. Under conditions of temperature and pressure in aquifer, CO2 becomes supercritical state and upward migration of CO2 is caused by the buoyancy force. In order to reduce the leakage risk, injecting nano-scale CO2 droplets into the aquifer is proposed in this study. Nano-scale supercritical CO2 droplets were generated with surfactant and investigated their time evolution of its diameter and the distribution experimentally. At high CO2 density and low temperature condition, stable supercritical CO2 droplets were observed. Supercritical CO2 droplets that were injected into the porous media were observed by using X-ray CT. The CO2 droplets grew at pore-scale, however, were stably trapped in each pore by capillary force.
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