【摘要】 自行设计了高压汽液平衡数据的测定装置,实现汽液两相在线气相色谱分析。在压力0.305～2.036MPa、温度303.15,333.15,363.15K的条件下,测定了乙烯-甲苯二组分物系的汽液平衡数据。汽液平衡数据满足热力学一致性检验。由实验数据对乙烯-甲苯二组分物系的汽相采用Peng-Robinson方程、液相采用NRTL方程进行关联,得到NRTL方程的二元交互作用参数。乙烯-甲苯二组分物系的汽液平衡数据的计算值与实验值的平均偏差为3.14%,最大偏差为10.68%。更多还原

【Abstract】 Isothermal vapor-liquid equilibrium(VLE) data of ethylene-toluene binary system under high-pressure were measured by a self-made apparatus.The vapor and liquid samples could be analyzed online by means of gas chromatography.The VLE data of the binary system were determined under 0.305-2.036 MPa at 303.15,333.15 and 363.15 K.The VLE data can meet demand of thermodynamic consistency test. Correlation of experimental data was carried out by means of Peng-Robinson(PR) equation for gas phase and NRTL equation for liquid phase.The average deviation between experimental data and correlated results is 3.14% and the maximum deviation is 10.68%.The VLE data of ethylene-toluene binary system can be calculated by PR-NRTL equation.更多还原