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关于固体物质在超临界流体 ( SF)中溶解度计算方程的改进 ,是在以相平衡为基础的两参数模型方程基础上提出了一个四参数的改进式 ,其中 ,两个普遍化参数用于修正模型简化及估算误差产生的偏差 ;用P- R方程计算逸度系数时将相互作用能参数 Kij修正为 sin ( Kij) ,可使计算搜索快捷准确。利用文献中 2 0组二元物系试验数据对改进模型进行了验算 ,结果表明关联精度明显优于原来的方程
An improvement on the equation for calculating the solubility of solid matter in a supercritical fluid (SF) is to propose a four-parameter improvement based on a two-parameter model equation based on phase equilibrium, in which two generalized parameters are used to correct Model simplification and estimation error. When the fugacity coefficient is calculated by P-R equation, the interaction parameter Kij is modified to sin (Kij), which makes the calculation search fast and accurate. The improved model was checked by using 20 binary data sets in the literature, and the results show that the correlation accuracy is obviously better than the original equation