The vapor–liquid equilibrium for two mixtures containing methane, carbon dioxide, and hydrogen sulfide was determined experimentally by a static-analytic method. Thirty-one data points were acquired for a range of temperatures from 243 to 333 K at pressures up to 11 MPa. The measured data were correlated with the Peng–Robinson equation of state (EoS) and different mixing rules, which led to the conclusion that a cubic EoS could simultaneously predict the existence of a three-phase region and two critical points on the constant-composition, two-phase boundary curve.

中文翻译：

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具有两种不同全局组成的CH ₄ + CO ₂ + H ₂ S三元体系的汽液平衡：实验和建模

通过静态分析方法，通过实验确定了含有甲烷，二氧化碳和硫化氢的两种混合物的气液平衡。在高达11 MPa的压力下，从243到333 K的温度范围内采集了31个数据点。实测数据与Peng-Robinson状态方程（EoS）和不同的混合规则相关，从而得出结论，三次EoS可以同时预测恒组成上三相区域和两个临界点的存在。 ，两相边界曲线。