The solubility of propane in TEG was measured via bubble point experiments using the Cailletet equipment. The results indicated that within some ranges of the P-T -x space, this system shows an inverse temperature effect, i.e., an increase of propane solubility with increasing temperatures, contrary to most gas solubilty measurements. Thermodynamic modeling of the phase behavior of propane + TEG system was undertaken using the Peng-Robinson EoS and various mixing rules. The UNIQUAC G^E model was used together with the WS and HV mixing rules. The results indicated that the G^E mixing rules provides satisfactory results for this system, with the WS mixing rule demonstrating the best results (AARD% of 5.06% in bubble point pressure calculations). The modeling results also indicated that the temperature-dependency of the binary interaction coefficient, $k_{ij}$, in the vdW mixing rules is very important for accurate results.

丙烷在TEG中的溶解度是使用Cailletet设备通过泡点实验测量的。结果表明，与大多数气体溶解度测量相反，该系统在PT -x空间的某些范围内显示出反温度效应，即丙烷溶解度随温度升高而增加。使用Peng-Robinson EoS和各种混合规则对丙烷+ TEG系统的相行为进行热力学建模。UNIQUAC G ^E模型与WS和HV混合规则一起使用。该结果表明，G ^ ^Ë混合规则为该系统提供了令人满意的结果，而WS混合规则证明了最佳结果（气泡点压力计算中的AARD％为5.06％）。建模结果还表明，二元相互作用系数与温度有关，${ķ}_{\mathrm{一世}Ĵ}$，在vdW中，混合规则对于获得准确的结果非常重要。