状态方程法求算气体的剩余焓与剩余熵  

The Calculation of Residual Enthalpy and Residual Entropy for Gaseous Mixtures

作　　者：于志家[1] 李香琴[1] 兰忠[1] 王维[1] 刘定胜[1] 

机构地区：[1]大连理工大学化工与环境生命学部,辽宁大连116024

出　　处：《化工时刊》2016年第4期12-14,共3页Chemical Industry Times

基　　金：大连理工大学课程建设基金

摘　　要：流体剩余焓与剩余熵计算是化工过程设计中十分重要的计算,但现有教科书中缺少P-R方程与S-R-K方程剩余焓与剩余熵的计算方法与计算公式;化工生产中,绝大多数物流都是多组分混合物,而关于维里方程法气体混合物的剩余焓与剩余熵计算也缺少详细的论述。借助于通用立方形方程剩余焓与剩余熵计算式,推导出P-R方程和S-R-K方程的剩余焓与剩余熵的计算公式;采用Prausnitz混合规则,推导出维里方程求算混合气体的剩余焓与剩余熵的计算式与方法,使流体热力学性质计算方法更加完善。The calculations of thermodynamic properties of fluids are important calculations in Chemical Engineering Thermodynamics. However,in textbooks,there is no description on the calculation of residual enthalpy and residual entropy with P-R equation and S-R-K equation,and also for gaseousmixtures with virial equation. In this paper,we derive residual enthalpy and residual entropy calculation formula suitable for P-R equation and SRK equation based on the generalized cubic equation of state. With Microsoft Excel spread sheet,thermodynamic properties of a binary gaseous mixture of hydrogen sulfide and ethane are calculated. Furthermore,the calculation method of residual enthalpy and residual entropy withvirial equation is developed for gaseous mixtures.

关 键 词：剩余焓 剩余熵 S-R-K方程 P-R方程 维里方程 

分 类 号：TQ013.1[化学工程]