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在汽-液相平衡的研究中,汽相组成的测定往往费时很多且不易测准,因此,由实验测定沸点、压力和液相组成,然后用热力学的方法确定汽相组成,是一项很有意义的课题。对于由等温下的压力-液相组成直接推算汽相组成的方法已有很多文献报道,而对更为常用的由等压下的沸点-液相组成数据直接推算汽相组成的研究却较少。文献[1]曾提出了一种由双组分的等压汽-液相共存方程,通过数值积分推算汽相组成的直接积分法,然而,在实际的化工设计中更为需要的是多组分汽(?)液相平衡数据。由于多组分体系的汽相组成的测定比双组分体系更为困难,开展由沸点-液相组成数据推算多组分体系的汽相组
In the vapor-liquid equilibrium study, the determination of the vapor phase composition is often time-consuming and difficult to measure, so determining the boiling point, pressure and liquid composition experimentally and then determining the vapor phase composition using thermodynamic methods is a very Meaningful topic. There are many reports on the direct calculation of the vapor phase composition from the isothermal pressure-liquid phase composition. However, there is little research on the more common vapor-phase composition deduced directly from the boiling point-liquid phase composition data under isobaric pressure . Literature [1] proposed a two-component isobaric vapor-liquid coexistence equation to calculate the direct integral method of vapor phase composition by numerical integration. However, it is more necessary in the actual chemical design to have multiple groups Sub-steam (?) Liquid-phase balance data. Since the vapor phase composition of multi-component system is more difficult to determine than the two-component system, the vapor phase group of multi-component system is deduced from the boiling point-liquid phase composition data