甲缩醛-甲醇-甲醛-水四元系的汽液平衡研究

Study on Vapor Liquid Equilibria of the Methylal-Methanol-Formaldehyde-Water System

用新型泵式沸点仪测定了常压下甲缩醛－甲醇－甲醛－水四元系在不同液相组成时的沸点，采用“甲醛虚拟饱和蒸汽压”的处理方法，用Ｗｉｌｓｏｎ方程对所测数据进行了关联，建立了该系统汽液平衡的热力学模型。

The boiling points of the methylal-methanol-formaldehyde-water system were determined at the atmospheric pressure with a new motive cottrell pump-ebulliometer.These data had been treated with formaldehybe hypothetical saturation-vapor pressure (FHSVP) and the Wilson equation,setting up the thermodynamic model of this system on the vapor equilibria (VLE).The equilibrium composition of the vapor phase had been calculated.