The Application of UNIFAC Group-Contribution Model in Vapor-Liquid Equilibrium of Heavy Oil

2006 ◽  
Vol 24 (5) ◽  
pp. 423-430
Author(s):  
Gao Daiwei ◽  
Gao Jinsen ◽  
Xu Chunming
Keyword(s):  
Heavy Oil ◽  
Group Contribution ◽  
Liquid Equilibrium ◽  
Vapor Liquid Equilibrium ◽  
Group Contribution Model ◽  
Unifac Group Contribution Model ◽  
Vapor Liquid

Vapor–liquid equilibrium data and critical points for the system H2S+COS. Extension of the PSRK group contribution equation of state

2000 ◽  
Vol 170 (2) ◽  
pp. 193-202 ◽  
Author(s):  
Patricia Guilbot ◽  
Pascal Théveneau ◽  
Abdelatif Baba-Ahmed ◽  
Sven Horstmann ◽  
Kai Fischer ◽  
...  
Keyword(s):  
Equation Of State ◽  
Critical Points ◽  
Group Contribution ◽  
Liquid Equilibrium ◽  
Vapor Liquid Equilibrium ◽  
Equilibrium Data ◽  
Vapor Liquid

scholarly journals Improvement of predictive tools for vapor-liquid equilibrium based on group contribution methods applied to lipid technology

2018 ◽  
Vol 470 ◽  
pp. 249-258 ◽  
Author(s):  
Daniela S. Damaceno ◽  
Olivia A. Perederic ◽  
Roberta Ceriani ◽  
Georgios M. Kontogeorgis ◽  
Rafiqul Gani
Keyword(s):  
Group Contribution ◽  
Liquid Equilibrium ◽  
Vapor Liquid Equilibrium ◽  
Predictive Tools ◽  
Group Contribution Methods ◽  
Vapor Liquid

Prediction of vapor–liquid equilibrium for systems containing hydrofluoroethers using ASOG group contribution method

2001 ◽  
Vol 183-184 ◽  
pp. 173-182 ◽  
Author(s):  
K. Tochigi ◽  
K. Yoshida ◽  
K. Kurihara ◽  
K. Ochi ◽  
J. Murata ◽  
...  
Keyword(s):  
Group Contribution ◽  
Group Contribution Method ◽  
Liquid Equilibrium ◽  
Vapor Liquid Equilibrium ◽  
Vapor Liquid

scholarly journals Modeling of CO2 vapor-liquid equilibrium in Colombian heavy oil using SARA analysis

DYNA ◽  
2015 ◽  
Vol 82 (191) ◽  
pp. 103-108
Author(s):  
Oscar Ramirez ◽  
Carolina Betancur Gómez ◽  
Bibian Hoyos ◽  
Carlos Naranjo
Keyword(s):  
Heavy Oil ◽  
Computational Cost ◽  
Calculated Data ◽  
Complete Characterization ◽  
Critical Properties ◽  
Liquid Equilibrium ◽  
Vapor Liquid Equilibrium ◽  
Cubic Equation ◽  
Vapor Liquid

The solubility of CO2 in Colombian heavy oil was calculated using the Peng-Robinson cubic equation of state and the Lee-Kesler correlations. The crude was represented as a mixture of pseudo-components and for each one of them, the thermodynamic and critical properties were estimated. The results obtained in representing the oil with four, five and six pseudo-components show that all these representations produce similar results and therefore the use of four pseudo-components is sufficient and has a lower computational cost. Excellent results were obtained by comparing the experimental and calculated data. For this system, it is enough to have a complete characterization of the SARA analysis and to use four pseudo-components to adequately model the vapor-liquid equilibrium of CO2 -heavy oil.

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