| 초록 |
Natural gas hydrates have attracted the attention of many researchers in energy and environmental fields as well as petroleum industry because of recovering a huge amount of CH4 stored in the deep gas hydrate deposits. In particular, the swapping mechanism, the replacement of CH4 hydrate with the sequestration of flue gas N2+CO2, has investigated into the actual application in recent years. However, the phase equilibrium data of ternary CH4-N2-CO2 mixed hydrate is essential to the swapping mechanism, but not yet available. In the present study, the feed gas molar ratio of N2 to CO2 of 8:2 will be fixed according to conventional flue gas type of power plant. This hydrate system cannot form structure II at all composition, because the binary mixed N2-CO2 hydrate was known to form structure I at compositions above 0.2 mole fraction of CO2. Gas chromatography would be introduced to hydrate phase compositions of the ternary mixed hydrates measured at the corresponding vapor phase compositions. |
