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局部组成型M-H(81)状态方程 被引量:1

Local Composition Version of M-H (81) Equation of State
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摘要 为了改进M-H(81)状态方程在含极性和超临界组分体系汽液平衡计算中的应用,作者将局部组成概念和M-H(81)状态方程相结合,导出了局部组成型的M-H(81)状态方程[DDLC M-H(81)];并对45组低压和高压二元汽液平衡数据进行了关联计算.结果表明:对低压极性体系,汽相组成的绝对偏差和常用的活度系数模型相当,而压力的绝对偏差则略好于上述模型.对于高压体系(包括含超临界组分体系),新模型与单流体模型相比,无论是汽相组成还是泡点压,其计算精度都有明显的改进. A density dependent local composition version of M-H(81) equation of state(DDLC M-H(81)) tor mixtures has been developed to improve the application of M-H(81) equation of state to VLE calculation for systems containing polar and supercritical components. It was tested with 45 sets of low-pressure and high-pressure binary VLE data. When applied to low-pressure polar systems, the new model had the same accuracy for the vapor composition and better result for the bubble point pressure as compared with the common activity-coefficient models. When applied to high-pressure systems (including those containing supercritical components) the model showed significant improvement in data correlations as compared with the conventional quadratic mixing rule.
机构地区 浙江大学化工系
出处 《化工学报》 EI CAS CSCD 北大核心 1991年第5期576-586,共11页 CIESC Journal
基金 国家自然科学基金
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参考文献2

  • 1郭天民.局部组成型的立方转子链状态方程[J]化工学报,1985(01). 被引量:1
  • 2侯虞钧,张彬,唐宏青.马丁-侯状态方程向液相发展[J]化工学报,1981(01). 被引量:1

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