Modeling vapor liquid equilibrium of binary and ternary systems of CO2 + hydrocarbons at high-pressure conditions
D. C. Silva, R. Guirardello, A. C. D. Freitas
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In this work, binary and ternary systems composed by hydrocarbons and CO2 in liquid-vapor equilibrium conditions (LV) were thermodynamically modeled using Peng-Robinson (PR) and Patel-Teja (PT) equations of state (EoS) in combination with van der Waals mixing rule with two adjustable parameters (vdW...
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In this work, binary and ternary systems composed by hydrocarbons and CO2 in liquid-vapor equilibrium conditions (LV) were thermodynamically modeled using Peng-Robinson (PR) and Patel-Teja (PT) equations of state (EoS) in combination with van der Waals mixing rule with two adjustable parameters (vdW -2, kij and lij). The model was formulated as a minimization of the Mean Absolute Deviation (%AAD) between the predicted and experimental values for liquid and vapor phases using the simplex algorithm, through the software Phase- Equilibrium 2000 (PE-2000). Low deviations, %AAD = 2.33% for PR EoS and %AAD = 3.06% for PT EoS were observed for binary systems in the evaluation of 160 experimental points (EP). Ternary systems were modeled with low deviations too, %AAD = 1.12% for EoS PR and %AAD = 1.18% for EoS PT were observed in the evaluation of 69 EP. Both tested EoS proved to be useful to represent LV equilibrium in this kind of system
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Modeling vapor liquid equilibrium of binary and ternary systems of CO2 + hydrocarbons at high-pressure conditions
D. C. Silva, R. Guirardello, A. C. D. Freitas
Modeling vapor liquid equilibrium of binary and ternary systems of CO2 + hydrocarbons at high-pressure conditions
D. C. Silva, R. Guirardello, A. C. D. Freitas
Fontes
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Chemical engineering transactions Vol. 57 (2017), p. 1477-1482 |