首页> 外文学位 >Equation of state composition dependence: I. Implications from experimental binary PVTx data. II. Application of hybrid composition dependence for representing vapor-liquid equilibria of nonideal mixtures.
【24h】

Equation of state composition dependence: I. Implications from experimental binary PVTx data. II. Application of hybrid composition dependence for representing vapor-liquid equilibria of nonideal mixtures.

机译:状态组成相关性方程:I.来自实验二进制PVTx数据的影响。二。应用杂化成分依赖性表示非理想混合物的气液平衡。

获取原文
获取原文并翻译 | 示例

摘要

This work addresses the equation of state composition dependence. The effects of various plausible approximations which can be introduced into the statistical mechanical expressions for fluid mixture thermodynamic properties are investigated. The resultant composition dependence is compared with that observed for experimental data. A modified mean density approximation (MMDA) is suggested for further investigation.; Hybrid Mixing Rules (HMR) based on the composition dependence of the virial equation combined with the van der Waals one fluid theory of mixing have been developed. The virial equation is truncated to third order composition dependence and for the remaining terms of the equation of state, classical mixing rules or conformal solution mixing rules are used. Two different types of equations of state are tested with the new mixing rules. Vapor-liquid equilibrium calculations for a number of binaries and ternaries show good agreement with experimental data. The new mixing rules referred to as the Hybrid Mixing Rules (HMR), give better results than the conformal solution mixing rules for most of the systems studied irrespective of the type of equation of state (BWR or cubic type) used. Thus the HMR model can be used to improve any corresponding states or cubic type equations of state for mixtures.; The new mixing rules require two binary interaction parameters for all types of systems, which are determined by regressing binary vapor-liquid equilibrium (VLE) data. VLE predictions for multicomponent systems are made with the interaction parameters obtained from the binary data. Calculations without the use of any binary interaction parameters are made for both binary and ternary VLE data which show reasonable predictions for nonpolar systems.
机译:这项工作解决了状态组成依存关系方程。研究了可以引入流体混合物热力学性质的统计力学表达式的各种可能近似的影响。将所得的成分依赖性与对实验数据观察到的依赖性进行比较。建议使用改进的平均密度近似值(MMDA)进行进一步研究。基于病毒方程的成分依赖性,结合范德华力,建立了一种混合理论的混合混合规则(HMR)。病毒方程式被截断为三阶成分依存关系,对于状态方程式的其余项,使用经典混合规则或共形溶液混合规则。使用新的混合规则测试了两种不同类型的状态方程。许多二元和三元的汽液平衡计算结果与实验数据吻合良好。对于所研究的大多数系统,无论使用何种状态方程(BWR或立方型),新的混合规则(称为混合混合规则(HMR))都比保形溶液混合规则提供更好的结果。因此,HMR模型可用于改善混合物的任何相应状态或立方型状态方程。新的混合规则要求所有类型的系统都有两个二元相互作用参数,这些参数是通过回归二元气液平衡(VLE)数据确定的。利用从二进制数据获得的交互参数,可以对多组分系统进行VLE预测。对于二进制和三元VLE数据都进行了不使用任何二进制交互参数的计算,这些数据显示了对非极性系统的合理预测。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号