| 학회 | 한국화학공학회 |
| 학술대회 | 2016년 봄 (04/27 ~ 04/29, 부산 BEXCO) |
| 권호 | 22권 1호, p.538 |
| 발표분야 | 에너지 |
| 제목 | Experimental Verification of Structural Transition and Dissociation Enthalpy Change during CH 4 Recovery Induced by CO 2 Injection into CH 4 + C 3 H 8 hydrate |
| 초록 | The CH 4 -CO 2 replacement occurring in natural gas hydrates has attracted significant attention due to its double function for CH 4 recovery and CO 2 sequestration. In this study, CO 2 was injected into the CH 4 + C 3 H 8 hydrate to identify the influence of the replacement on the hydrate structure and dissociation enthalpy (ΔH d ). The shift of the three-phase (H-L W -V) equilibrium line after CO 2 injection indicated that a significant portion of CH 4 and C 3 H 8 in the initial hydrate was replaced with CO 2 . The extent of the replacement was measured using a gas chromatograph, and was gradually increased as the driving force (ΔP CO2 ) increased. The NMR confirmed that the CH 4 + C 3 H 8 hydrate is structure II and no structural transition was observed after the replacement. The influence of the replacement on ΔH d was examined using a high-pressure micro-differential scanning calorimeter (HP μ-DSC). During the replacement, there was no significant heat flow associated with the hydrate dissociation or formation. This study revealed that the CH 4 recovery induced by CO 2 injection into CH 4 + C 3 H 8 hydrate could be achieved in a sII isostructural system without significant hydrate cage destruction. |
| 저자 | 이요한 , 최원중 , 서용원 |
| 소속 | UNIST |
| 키워드 | 에너지 공정 |
| VOD | VOD 보기 |
| 원문파일 | 초록 보기 |
