摘要
CO2置换CH4水合物是一种开发CH4的新方法,该方法既可以开发CH4,又可以永久储存CO2。通过自行优化设计的实验装置,研究了石英砂介质体系中温度和压力对置换效率的影响。实验结果表明,在置换压力为2.5MPa,温度为273.15K、274.15K、275.15K、276.15K、277.15K、278.15K时,置换率分别为1.75%、6.99%、13.43%、5.53%、22.64%、44.90%;在温度为275.15K,置换压力为2.0MPa、2.5MPa、3.0MPa、3.5MPa时,置换效率分别为37.11%、13.43%、3.44%、4.58%。可见,温度和压力都是推动CO2置换CH4水合物反应的影响因素。
Replacement of methane hydrate by CO2 is a new approach for the development of CH4 ,and the method can develop CH4 and store CO2 permanently .By optimizing design of ex-periment device ,the influences on displacement efficiency of temperature and pressure in the sys-tem of quartz sand media are studied .The experiment results show that the replacement rates are 1 .75% ,6 .99% ,13 .43% ,5 .53% ,22 .64% ,44 .90% respectively ,the corresponding replace-ment temperature are 273 .15 K ,274 .15 K ,275 .15 K ,276 .15 K ,277 .15 K ,278 .15 K ,and the CO2 charge pressure is constant at 2 .5 M Pa .On the other hand ,the replacement efficiency are 37 .11% ,13 .43% ,3 .44% ,4 .58% respectively ,corresponding to the CO2 charge pressure at 2 .0 M Pa ,2 .5 M Pa ,3 .0 M Pa ,3 .5 M Pa and the replacement temperature being constant at 275 .15 K .Therefore ,temperature and pressure are driving force factors of CO 2 replacement of CH4 hydrate reaction .
出处
《石油与天然气化工》
CAS
CSCD
2014年第1期33-38,共6页
Chemical engineering of oil & gas
基金
上海市教育委员会科研创新项目"分子动力学法预测新一代制冷替代工质"(11YZ119)
上海市重点学科项目"低温与制冷技术"(S30503)
关键词
CH4
水合物
置换率
CO2
methane,hydrate,replacementratio,carbondioxide
