화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2008년 봄 (04/23 ~ 04/25, 제주ICC)
권호 14권 1호, p.906
발표분야 에너지/환경
제목 Swapping Phenomena on Various Structures of Natural Gas Hydrate Layer for Methane Gas Recovery
초록 Natural gas hydrates, which has been expected as future energy sources and considered as an important component of the global caron cycle, exist in the deep sea ocean and the permafrost region. According to the estimates of many researchers, the amount of natural gas accumulated on earth in hydrate phase are at least twice as much as the energy contained in the total fossil fuel forms. Therefore, many researchers attempt to recover the natural gas from the natural gas hydrate layer in the deep sea ocean. In this study, we attempt to investigate the swapping phenomena occuring in deep sea ocean between guest molecules such as CO2, N2 and natural gas in various structures of natural gas hydrate. In sI type of methane hydrate, we can get 64% of CH4 recovery rate from the sI methane hydrate by using CO2 molecule. However, in the case of swapping phenomena on sII, sH types of natural gas hydrate, we observed the higher recovery rate of CH4 and structure transition to sI type. To identify the swapping phenomena on various structures of hydrate, we used the spectroscopic identification such as NMR and Raman spectroscopy.
저자 차민준1, 신규철1, 박영준1, 박근필2, 허대기2, 이재형2, 김세준2, 이 흔1
소속 1KAIST, 2한국지질자원(연)
키워드 methane hydrate; swapping; phase transition
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