摘要
提出了用惰性气流带出气相色谱法测定二元物系共沸数据的新方法。该方法只需测定恒温下平衡气相的组成y,即可求得总压力p。并由所提出的拟合p-y关系的方法确定共沸数据。验证、测定了4种具有最高共沸点和最低共沸点在不同温度下的共沸数据。测定结果与文献值比较相符合。同时对文献中一系列有关相平衡数据的计算结果进一步表明,该方法是可靠的。
A new method of determining azotropes in binary systems with inert gas stripping and gas chromatographic measuring is presented. It only needs measuring the vapor phase compsitions, and the total pressure can then be calculated. The principle of determination was discussed and a couple of quaternion polynomials were fitted to the data of the total pressures and the vapor phase compositions ,which can determine azotropic data. Azeotropic data for four binary systems at different temperatures have been obtained by this method. The experimental results are in agreement with the data listed in the literature. The calculated results for a series of systems found in literature indicate that this method is accurate and reliable.
出处
《天津大学学报》
EI
CAS
CSCD
1990年第4期85-92,共8页
Journal of Tianjin University(Science and Technology)
关键词
二元物
测定
沸点
共沸
气-液平衡
azeotropic data, vapor-liquid phase equilibrium, nonideal solutions
