关键词: 丙酮连氮, 汽液平衡, NRTL方程, 测定与关联

Abstract: Vapor-liquid equilibrium (VLE) data for acetone-azine binary system and parts of acetone water azine ternary system were determined in an Othmer equilibrium at atmospheric pressure (101.3 kPa). The experimental data was verified by Herington method and were consistent with thermodynamics. The data of acetone-azine binary system were correlated with the NRTL，Wilson and UNIQUAC models by using chemical engineering analogue software. Respectively，all the models were correlated well with the VLE data. NRTL model produced best data，with the average deviations of temperature of 0.0639 K and vapor-phase mole fraction of methanol of 0.0048. The NRTL model was used to correlate the VLE data of the ternary system，and the interaction parameters of acetone-azine，water- azine，and acetone-water were obtained. In order to verify the reliability of the VLE data of the ternary system and these interacting binary parameters，the vapor compositions were calculated and compared with the corresponding experimental VLE data of acetone-azine binary system. The agreement between the calculated and experimental data was satisfactory. The experimental and correlative data could provide a basis for distillation separation of acetone-water-azine’s VLE system．

Key words: azine, vapor-liquid equilibrium, NRTL equation, measurement and correlation