| 초록 |
The swapping phenomenon is one of the methane production methods that can produce methane and can sequestrate carbon dioxide at the same time by exchanging carbon dioxide molecules with methane molecules in the hydrate structure. When we inject N2/CO2 mixed gas in methane hydrate deposits, the methane swapping ratio shows higher value than when we inject only CO2 gas. Phase equilibria of ternary mixed hydrate system consisting of CH4/N2/CO2 is necessary to apply the swapping phenomenon to real gas hydrate deposits. Therfore, in this study, phase equilibrium data of CH4/N2/CO2 mixed hydrates are measured depending on various CH4 : N2 : CO2 ratio. The fractional experimental pressure differences (ΔP/P) are also calculated and the values range from – 0.02 to – 0.10 in case of ternary mixed hydrates with calculated data by using CSMGem. These results can be utilized to forecast the behavior of CH4/N2/CO2 ternary mixed hydrates after applying the swapping phenomena in the methane hydrate deposits. |
