【摘要】 采用带有可视石英玻璃窗的高压汽液相平衡装置,测定了压力0.5~2.5 MPa、温度265.15~333.15 K条件下CO2-异丙醚体系的二元汽液相平衡数据,并通过了热力学一致性检验。用Peng-Robinson(PR)状态方程对CO2-异丙醚体系的汽液相平衡数据进行关联,得到该方程的二元交互作用参数。结果表明,体系的汽液相平衡数据计算值与实验值偏差较小,可采用PR方程对CO2-异丙醚二组分物系的汽液相平衡数据进行预测。更多还原

【Abstract】 An experimental device incorporating vision windows,for measuring vapor-liquid equilibrium(VLE) data at high-pressures is described.Online-sampling of the vapor and liquid phases can be carried out by gas chromatography.The vapor-liquid equilibrium(VLE) data for the binary system carbon dioxide-diisopropyl ether have been measured at 265.15-333.15 K and 0.5-2.5 MPa.The experimental data set passed the thermodynamic consistency test.An isothermal correlation of the experimental data has been carried out based on the Peng-Robinson(PR) equation and the correlated results accord with the experimental data.The results show that the VLE data for the binary system carbon dioxide-diisopropyl ether can be calculated by the PR equation.更多还原