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Global stability analysis and phase equilibrium calculations at high pressures using the enhanced simulated annealing algorithm
Alternative TitleChem. Eng. Sci.
Zhu, YS; Wen, H; Xu, ZH
2000-09-01
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume55Issue:17Pages:3451-3459
AbstractAn enhanced simulated annealing algorithm (SAA) is presented to verify the phase stability analysis and obtain the true solution of the phase equilibrium problem of multi-component systems at high pressures. Using the enhanced SAA, the global stability analysis is checked on the basis of the minimization results of the tangent plane distance functions (TPDF) for the systems where the nonideal phases are described by PR or SRM equations of state. The consequent phase equilibrium calculation is accomplished by the Newton-Raphson method based upon the stability analysis results. The calculation results for three systems including ternary, quaternary, and five-component mixtures that exhibit multiple immiscibility gaps with different charges at elevated pressures state that the combined algorithm can effectively locate the global minima of these systems involving symmetric models, then the final stability analysis implemented is used to ensure the global minimization. In comparison with MULPRG and HOMPEQ developed by Michelsen and Sun and Seider (1995: Fluid phase Equilibrium, 103, 213-249) respectively, the enhanced SAA is slightly slower and provides comparable reliability, but it is self-starting. (C) 2000 Elsevier Science Ltd. All rights reserved.; An enhanced simulated annealing algorithm (SAA) is presented to verify the phase stability analysis and obtain the true solution of the phase equilibrium problem of multi-component systems at high pressures. Using the enhanced SAA, the global stability analysis is checked on the basis of the minimization results of the tangent plane distance functions (TPDF) for the systems where the nonideal phases are described by PR or SRM equations of state. The consequent phase equilibrium calculation is accomplished by the Newton-Raphson method based upon the stability analysis results. The calculation results for three systems including ternary, quaternary, and five-component mixtures that exhibit multiple immiscibility gaps with different charges at elevated pressures state that the combined algorithm can effectively locate the global minima of these systems involving symmetric models, then the final stability analysis implemented is used to ensure the global minimization. In comparison with MULPRG and HOMPEQ developed by Michelsen and Sun and Seider (1995: Fluid phase Equilibrium, 103, 213-249) respectively, the enhanced SAA is slightly slower and provides comparable reliability, but it is self-starting. (C) 2000 Elsevier Science Ltd. All rights reserved.
KeywordGibbs Free Energy Phase Equilibria Global Optimization Saa Tpdf Stability Analysis
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordLIQUID-LIQUID EQUILIBRIUM ; THERMODYNAMIC ENERGY ANALYSIS ; CRITICAL-POINT CALCULATIONS ; ISOTHERMAL FLASH PROBLEM ; REDLICH-KWONG EQUATION ; GIBBS FREE-ENERGY ; CHEMICAL-EQUILIBRIUM ; MULTICOMPONENT MIXTURES ; MULTIPHASE EQUILIBRIA ; RELIABLE PREDICTION
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000087351200011
Citation statistics
Cited Times:42[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5953
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Chem Met, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zhu, YS,Wen, H,Xu, ZH. Global stability analysis and phase equilibrium calculations at high pressures using the enhanced simulated annealing algorithm[J]. CHEMICAL ENGINEERING SCIENCE,2000,55(17):3451-3459.
APA Zhu, YS,Wen, H,&Xu, ZH.(2000).Global stability analysis and phase equilibrium calculations at high pressures using the enhanced simulated annealing algorithm.CHEMICAL ENGINEERING SCIENCE,55(17),3451-3459.
MLA Zhu, YS,et al."Global stability analysis and phase equilibrium calculations at high pressures using the enhanced simulated annealing algorithm".CHEMICAL ENGINEERING SCIENCE 55.17(2000):3451-3459.
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