Heterogeneity properties of methane hydrate formation in a pilot-scale hydrate simulator
文献类型：期刊论文
| 作者 | Wan, Qing-Cui3,4; Si, Hu3,4; Li, Gang2 ; Feng, Jing-Chun1; Li, Bo3,4
|
| 刊名 | APPLIED ENERGY
 |
| 出版日期 | 2020-03-01 |
| 卷号 | 261页码:13 |
| 关键词 | Gas hydrate Hydrate formation Numerical simulation Kinetic model Heterogeneous |
| ISSN号 | 0306-2619 |
| DOI | 10.1016/j.apenergy.2019.114325 |
| 通讯作者 | Si, Hu(sihu@cqu.edu.cn) |
| 英文摘要 | The accumulation and distribution features of gas hydrates are the significant issues affecting the hydrate resource assessment, the hydrate dissociation behaviors, and the risk evaluation of hydrate exploitation. This work aims to investigate the methane hydrate formation process by numerical simulation based on the experimental data in a pilot-scale hydrate simulator. Methane hydrate is formed by multi-step water injection method. Simulation results of the evolutions of the temperature, the system pressure, the mass of formed hydrate, and the remaining mass of methane gas are in good agreement with those of the experiment. The spatial distributions of the gas, water, and hydrate are all found to be very heterogeneous in the vessel during the whole simulation period. The free methane gas tends to accumulate in the pores near the upper boundary because of buoyancy and diffusion effects, while the liquid water shows an opposite trend under the gravity and capillary effects. Finally, the formed hydrates are found to be mainly accumulated in the upper area of the reactor due to the more favorable gas-water contact conditions, and the hydrate saturation decreases from the roof to the bottom layer by layer. In addition, the inhomogeneity of methane hydrate is more pronounced along the vertical direction than the horizontal one during the formation process. Generally, the heterogeneous formation of gas hydrate is dominated by the migration processes of gas and water in porous media. Moreover, the selected kinetic model is also important for the description of the heterogeneous hydrate formation behavior. |
| WOS关键词 | INDUCED GAS-PRODUCTION ; POROUS-MEDIA ; NUMERICAL-ANALYSIS ; DEPRESSURIZATION ; DISSOCIATION ; DEPOSITS ; WELL ; CONDUCTIVITY ; PERMEABILITY ; SEDIMENT |
| 资助项目 | National Natural Science Foundation of China (NSFC)[51874054] ; National Natural Science Foundation of China (NSFC)[51876017] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000515117500018 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Natural Science Foundation of China (NSFC) |
| 源URL | [http://ir.giec.ac.cn/handle/344007/27028]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Si, Hu |
| 作者单位 | 1.Guangdong Univ Technol, Inst Environm & Ecol Engn, Guangzhou 510006, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 3.Chongqing Univ, Sch Resources & Safety Engn, Chongqing 400044, Peoples R China 4.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wan, Qing-Cui,Si, Hu,Li, Gang,et al. Heterogeneity properties of methane hydrate formation in a pilot-scale hydrate simulator[J]. APPLIED ENERGY,2020,261:13. |
| APA | Wan, Qing-Cui,Si, Hu,Li, Gang,Feng, Jing-Chun,&Li, Bo.(2020).Heterogeneity properties of methane hydrate formation in a pilot-scale hydrate simulator.APPLIED ENERGY,261,13. |
| MLA | Wan, Qing-Cui,et al."Heterogeneity properties of methane hydrate formation in a pilot-scale hydrate simulator".APPLIED ENERGY 261(2020):13. |
入库方式： OAI收割
来源：广州能源研究所
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