CAJ | 학술논문

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2．5 M Pa ，温度为273．15 K 、274．15 K 、275．15 K、276．15 K、277．15 K、278．15 K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。
CO2치환CH4수합물시일충개발CH4적신방법，해방법기가이개발CH4，우가이영구저존CO2。통과자행우화설계적실험장치，연구료석영사개질체계중온도화압력대치환효솔적영향。실험결과표명，재치환압력위2．5 M Pa ，온도위273．15 K 、274．15 K 、275．15 K、276．15 K、277．15 K、278．15 K시，치환솔분별위1．75％、6．99％、13．43％、5．53％、22．64％、44．90％；재온도위275．15K，치환압력위2．0MPa、2．5MPa、3．0MPa、3．5MPa시，치환효솔분별위37．11％、13．43％、3．44％、4．58％。가견，온도화압력도시추동CO2치환CH4수합물반응적영향인소。
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 .