| 학회 | 한국화학공학회 |
| 학술대회 | 2014년 가을 (10/22 ~ 10/24, 대전 DCC) |
| 권호 | 20권 2호, p.1792 |
| 발표분야 | 열역학 |
| 제목 | Experimental Verification of the CH 4 -Flue Gas Replacement in the Structure H Hydrate System |
| 초록 | The CH 4 -flue gas replacement in naturally occurring gas hydrates has attracted great attention for the CO 2 sequestration and CH 4 recovery. In spite of the predominance of structure I (sI) and structure II (sII) hydrate reservoirs in nature, it was also reported that struecture H (sH) hydrates naturally occur. For the application of CH 4 -flue gas replacement in the sH hydrate reservoirs, the replacement mechanism is significantly important. In this study, stability condition shifts of initial and replaced hydrates were verified that flue gas was successfully replaced with the CH 4 in the sH hydrates. The structural transition of the replaced hydrate was investigated via NMR, Raman spectroscopy, X-ray diffractometry (XRD) and high pressure micro differential scanning calorimetry (HP μ-DSC). To examine the thermal properties, dissociation enthalpies of the initial CH 4 + 2,2-dimethylbutane hydrates and replaced hydrates were measured using a HP μ-DSC. In addition, the heat flow changes during the replacement process were monitored to observe the heat generated or absorbed due to dissociation, formation, and swapping. This study reveals the stability conditions, structural transition, and thermal properties of the CH 4 -flue gas replacement in the sH hydrate reservoirs. |
| 저자 | 이요한 1 , 김소영 1 , 김은애 1 , 이재형 2 , 서용원 1 |
| 소속 | 1 울산과학기술대, 2 한국지질자원(연) |
| 키워드 | Gas hydrates ; Flue gas ; Replacement ; Structure H |
| VOD | VOD 보기 |
| 원문파일 | 초록 보기 |
