Abstract: The Peng-Robinson equation of state was used for predicting vapor-liquid equilibria for three binary groups-methane-hydrocarbons, carbondi-oxide-hydrocarbons, and hydrogen-hydrocarbons. The correlated interaction parameters were recommended for binary systems containing methane and carbon dioxide. Application of the conformal solution mixing rules and a proposed correction of the temperature dependent factor a to highly asymmetric hydrogen-containing binary system, led to a more accurate description of vapor-liquid equilibria than the original work of Peng-Robinson.

摘要： Peng-Robinson状态方程式用于推算三组二元系统的汽-液平衡:甲烷、二氧化碳及氢与烃类.对含甲烷及二氧化碳的二元系统.推荐了经过关联的相互作用参数.将保形溶液(Conformal Solu-tion)混合规则及本文提出的对温度有关的系数α的修正式应用于高度非对称的含氢二元系统,较Peng-Robinson的原始工作更为精确地表述了汽-液平衡.