CO2乳状液置换开采天然气水合物实验模拟研究
文献类型：学位论文
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| 作者 | 周锡堂 |
| 学位类别 | 博士 |
| 答辩日期 | 2008-01-10 |
| 授予单位 | 中国科学院广州能源研究所 |
| 授予地点 | 广州能源研究所 |
| 导师 | 樊栓狮 |
| 关键词 | 置换 甲烷 甲烷水合物 水包二氧化碳型乳状液 |
| 其他题名 | Experimental Study of Methane Replacement from Its Hydrate with Carbon Dioxide-in-Water Emulsion |
| 中文摘要 | Natural gas hydrates is a clean energy sources with tremendous reserves, and CO2 is a greenhouse gas to be restricted. That to replace CH4 from its hydrate with CO2 is a new method that combibes energy exploitation with greenhouse gas sequestration. The intention to use CO2 emulsion is to enhance the replacement by use of the properties of the emulsion, and to promote its practical application. The relations between the emulsification process and results and the operation parameters such as content of TMN-6, mass ratio of CO2 and water, pressure and stirring rate were investigated. A nonionic surfactant Tergitol TMN-6 was used as emulgator and emulsion preparation was performed in an emulsifier of 350ml. It is indicated by experiment that at 30MPa and below 298K, a CO2-in-water emulsion can be formed and can exist for about 10 h stably. The kinetic property of replacement of CH4 from its hydrate with a series of CO2 emulsions were investigated.The CH4 hydrate used to be replaced was formed by refrigeration in the wetted quartz sand that in a cell with a capacity of 257ml. Under the promotion of SDS CH4 hydrate can be formed within 24h with the hydration number of about 6.5. Based on the analysis of phase graphs the reasonable scopes of hydration pressure and temperature were determined. It was shown by experiments that at 281.2 0.2 K and 5MPa, CH4 were replaced from its hydrate with the above emulsion and the replacement ratio was about 1.5 times of that replaced with pure liquid CO2 , which indicated that the result was more excellent to replace with CO2 emulsion than with liquid CO2. At the same time, it was investigated that to replace CH4 in its hydrate with CO2 at other pressure and temperature and with liquid and gaseous CO2. It was reasonable to replace CH4 from its hydrate with high-internal CO2 emulsion under some condition, in which CO2 hydrate can but CH4 hydrate can not exist stably. |
| 语种 | 中文 |
| 公开日期 | 2011-07-10 ; 2011-07-15 |
| 页码 | 119 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/4055]  |
| 专题 | 中国科学院广州能源研究所 |
| 推荐引用方式 GB/T 7714 | 周锡堂. CO2乳状液置换开采天然气水合物实验模拟研究, Experimental Study of Methane Replacement from Its Hydrate with Carbon Dioxide-in-Water Emulsion[D]. 广州能源研究所. 中国科学院广州能源研究所. 2008. |
入库方式： OAI收割
来源：广州能源研究所
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