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用PR状态方程和WS混合规则预测均相共沸 被引量：1

PREDICTION OF THE HOMOGENEOUS AZEOTROPES USING THE PR EQUATION OF STATE AND WS MIXING RULE
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摘要 本文提供了一种二元均相共沸混合物的预测方法。本方法通过UNIFAC基团贡献方法获得WS混合规则所需的二元相互作用系数,然后通过PR状态方程进行相平衡计算以求得平衡压力,再用牛顿迭代法求得使压力对浓度的一阶导数为零的根,从而获得共沸组分,并判断共沸混合物的类型。实例计算显示,预测结果与实验数据具有良好的一致性。 A method was presented to predict the binary homogeneous azeotropes. In this method, the UNIFAC model was used to calculate the binary interaction parameters of the WS mixing rule, and then the PR equation of state was used to obtain the pressure of the mixture. Newton＇s method was used to compute the root which makes the first derivative of the pressure with respect to the composition equal to zero. The root is the azeotropic composition for the azeotropic mixture. The type of the azeotropes can also be determined. This method was verified by the experimental data, and good agreement was obtained.
作者 董学强 公茂琼 张宇 刘军胜 吴剑峰
机构地区 中国科学院理化技术研究所低温工程学重点实验室 中国科学院研究生院 国家节能中心
出处 《工程热物理学报》 EI CAS CSCD 北大核心 2010年第9期1461-1464,共4页 Journal of Engineering Thermophysics
基金 国家自然科学基金资助项目(No.50890183)
关键词 均相共沸物 PR状态方程 WS混合规则 牛顿迭代法 homogeneous azeotropes PR equation of state WS mixing rule Newton＇s method
分类号 TK123 [动力工程及工程热物理—工程热物理]
  • 相关文献

参考文献15

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二级参考文献10

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共引文献2

同被引文献10

  • 1G Morrison,M O McLinden.Azeotropy in Refrigerant Mixtures[J].Int J Refrig,1993,16(2):129-138.
  • 2S Artemenko,V Mazur.Azeotropy in the Natviral and Synthetic Refrigerant Mixtures[J].Int J Refrig,2007. 30(5):831 839.
  • 3N Aslam,A K Sunol.Computing All the Azeotropes in Refrigerant Mixtures Through Equations of State[J]. Fluid Phase Equilibria.2004,224(1):97-109.
  • 4DONG Xueqiang,GONG Maoqiong,ZHANG Yu,et al. Prediction of Homogeneous Azeotropes by Wilson Equation for Binary HFCs and HCs Refrigerant Mixtures[.)]. Fluid Phase Equilibria,2008,269(1/2):6-11.
  • 5DONG Xueqiang,GONG Maoqiong,ZHANG Yu,et al. Prediction of Homogeneous Azeotropes by the UNIFAC Method for Binary Refrigerant Mixtures[J].J Chem Eng Data,2010,55(1):52 57.
  • 6HOU Shuxin,DUAN Yuanyuan,WANG Xiaodong. Vapor-Liquid Equilibria Predictions for New Refrigerant Mixtures Based on Group Contribution Theory[J].Ind Eng Chem Res,2007.46(26):9274-9284.
  • 7CHEN Jianxin,HU Peng,CHEN Zeshao.Study on the Interaction Coefficients in PR Equation With VDW Mixing Rules for HFC and HC Binary Mixtures[J].Int J Thermophys,2008,29(6):1945-1953.
  • 8E W Lemmon,M O McLinden,M L Huber.Thermodynamic Properties of Refrigerants and Refrigerant Mixtures Database,REFPROP V.8.0[DB/CD].Gaithersburg, MD,USA:NIST,2007.
  • 9董学强,公茂琼,张宇,吴剑峰.二元HFCs和HCs均相共沸物的预测方法研究[J].工程热物理学报,2009,30(4):562-564. 被引量：3
  • 10侯树鑫,段远源,王晓东.新型混合工质共沸点的判定与预测[J].工程热物理学报,2009,30(5):737-740. 被引量：1

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工程热物理学报
2010年 第9期

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