【摘要】 假定缔合组份只发生二聚作用,校正了二聚体形成的影响;考虑了汽相和液相的非理想性,应用 Virial 状态方程计算汽相各组份的逸度系数,并由 NRTL 方程计算液相各组份的活度系数。较严格地推导出缔合体系的汽-液相平衡模型。应用该模型处理二元缔合体系的平衡数据可通过热力学一致性校验。该模型用于由二元平衡数据推算三元平衡关系具有较好的拟合精度;用于模拟计算精馏过程与实验结果基本相符。更多还原

【Abstract】 Assuming there was only dimerization among the associating components,theinfluence of the formation of dimer was calibrated.Considering the nonideality ofboth vapor and liquid phases,the fugacity coefficients of each component in vaporphase were calculated from the Virial equation of state,whereas the activity coef-ficients ot each component in liquid phase were calculatcd from NRTL equation.From these,a rigorous model of vapor-liquid phase equilibrium for associated sys-tems was deduced.Applying this model to binary associated systems,the phaseequilibrium data obtained was found to be conformable to the thermodynamic con-sistency criterion;and a better fitness in accuracy was obtained in predicting tern-ary equilibrium from binary equilibrium data.Also,the experimental data of rect-ification were consistent with the simulation.更多还原