Abstract: On the basis of the special conditions of dilute system at vapor liquid equilibria, an equation was proposed to relate the solubility of sparingly soluble gas in non-volatile solvent to temperature and pressure, by using the regular-solution theory and the Virial expansion for the Redlich-Kwong equa tion of state. The equation was used to correlate high-pressure gas solubility in non-volatile solvent at various temperatures. Compared with the Krichevsky-Ilinskaya equation, this method gave better results and simpler calculation procedure.

摘要： 根据汽液平衡的基本性质和气体在液体中溶解时的特殊情况,采用RK方程的维里展开式和正规溶液理论,推得了气体溶解度与温度、压力的函数关系式,并用它对不同温度下加压气体的溶解度进行了关联和外推计算.