【作者】 周颖； 田爱伟； 高光华； 于养信；

【Author】 Zhou Ying, Tian Aiwei, Gao Guanghua, Yu yangxin (Department of Chemical Engineering, Tsinghua University, Beijing 100084, China)

【机构】 清华大学化学工程系；

【摘要】 本文应用改进的Peng-Robinson二参数立方型状态方程,采用等温等压下的闪蒸计算方法,分别计算了不同组成的 CH4-CO2-H2S和CH4-CO2-H2O两个三元体系的天然气油藏流体的高压相行为,并与部分实验数据进行了比较,验证了计算结果的可靠性。天然气油藏流体相行为的计算结果表明,采用物理方法去除天然气的杂质H2S、CO2和水是可行的,这对于天然气的清洁生产和能源品质的提高具有重要意义。更多还原

【Abstract】 The improved two-parameter cubic Peng-Robinson equation was adopted in this paper. With the flash calculation under defined temperature and pressure, the high pressure phase behaviors of the reservoir fluids of natural gas for the different compositions of CH4-CO2-H2S and CH4-CO2-H2O ternary systems were calculated. The good agreement between calculated results and experimental data verified the reliability of the calculation method. With the calculated results of the phase behaviors of the natural gas, it is demonstrated that it is possible to get rid of the impurities from natural gas by a physical way. Such method is beneficial to facilitating the "clean" production of natural gas and promoting the quality of energy source.更多还原