Improvement of the PR-CPA equation of state for modelling of acid gases solubilities in aqueous alkanolamine solutions

Tianyuan Wang; Elise El Ahmar; Christophe Coquelet; Georgios M. Kontogeorgis

doi:10.1016/j.fluid.2018.04.019

Improvement of the PR-CPA equation of state for modelling of acid gases solubilities in aqueous alkanolamine solutions

Tianyuan Wang, Elise El Ahmar, Christophe Coquelet^*, Georgios M. Kontogeorgis

^*Corresponding author for this work

Université PSL

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

Chemical absorption with alkanolamines processes are commonly applied for natural gas purification. The knowledge of CO₂, H₂S, hydrocarbons and mercaptans solubilities in aqueous alkanolamine solutions is important in acid gas removal process simulation and design. In previous works, alkanes, aromatics and mercaptans solubilities in different aqueous alkanolamine solutions have been successfully represented by using the PR-CPA EoS. In this work, the PR-CPA EoS with a pseudo-chemical reaction approach is developed and applied to describe the solubility of acid gases in aqueous alkanolamines solutions. The results are in good agreement with a wide range of experimental data. Other relevant properties such as water content, electrolytes speciation and enthalpy of absorption are accurately predictd by PR-CPA EoS.

Original language	English
Journal	Fluid Phase Equilibria
Volume	471
Pages (from-to)	74-87
ISSN	0378-3812
DOIs	https://doi.org/10.1016/j.fluid.2018.04.019
Publication status	Published - 2018

Bibliographical note

Please note:
Corrigendum to “Improvement of the PR-CPA equation of state for modelling of acid gases solubilities in aqueous alkanolamine solutions” [Fluid Phase Equilibria, vol. 471, 2018, 74–87] https://doi.org/10.1016/j.fluid.2018.12.010

Keywords

CPA
Acid gases
Solubility
Alkanolamine
Natural gas

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title = "Improvement of the PR-CPA equation of state for modelling of acid gases solubilities in aqueous alkanolamine solutions",

abstract = "Chemical absorption with alkanolamines processes are commonly applied for natural gas purification. The knowledge of CO2, H2S, hydrocarbons and mercaptans solubilities in aqueous alkanolamine solutions is important in acid gas removal process simulation and design. In previous works, alkanes, aromatics and mercaptans solubilities in different aqueous alkanolamine solutions have been successfully represented by using the PR-CPA EoS. In this work, the PR-CPA EoS with a pseudo-chemical reaction approach is developed and applied to describe the solubility of acid gases in aqueous alkanolamines solutions. The results are in good agreement with a wide range of experimental data. Other relevant properties such as water content, electrolytes speciation and enthalpy of absorption are accurately predictd by PR-CPA EoS.",

keywords = "CPA, Acid gases, Solubility, Alkanolamine, Natural gas",

author = "Tianyuan Wang and {El Ahmar}, Elise and Christophe Coquelet and Kontogeorgis, {Georgios M.}",

note = "Please note: Corrigendum to “Improvement of the PR-CPA equation of state for modelling of acid gases solubilities in aqueous alkanolamine solutions” [Fluid Phase Equilibria, vol. 471, 2018, 74–87] https://doi.org/10.1016/j.fluid.2018.12.010",

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language = "English",

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journal = "Fluid Phase Equilibria",

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T1 - Improvement of the PR-CPA equation of state for modelling of acid gases solubilities in aqueous alkanolamine solutions

AU - Wang, Tianyuan

AU - El Ahmar, Elise

AU - Coquelet, Christophe

AU - Kontogeorgis, Georgios M.

N1 - Please note: Corrigendum to “Improvement of the PR-CPA equation of state for modelling of acid gases solubilities in aqueous alkanolamine solutions” [Fluid Phase Equilibria, vol. 471, 2018, 74–87] https://doi.org/10.1016/j.fluid.2018.12.010

PY - 2018

Y1 - 2018

N2 - Chemical absorption with alkanolamines processes are commonly applied for natural gas purification. The knowledge of CO2, H2S, hydrocarbons and mercaptans solubilities in aqueous alkanolamine solutions is important in acid gas removal process simulation and design. In previous works, alkanes, aromatics and mercaptans solubilities in different aqueous alkanolamine solutions have been successfully represented by using the PR-CPA EoS. In this work, the PR-CPA EoS with a pseudo-chemical reaction approach is developed and applied to describe the solubility of acid gases in aqueous alkanolamines solutions. The results are in good agreement with a wide range of experimental data. Other relevant properties such as water content, electrolytes speciation and enthalpy of absorption are accurately predictd by PR-CPA EoS.

AB - Chemical absorption with alkanolamines processes are commonly applied for natural gas purification. The knowledge of CO2, H2S, hydrocarbons and mercaptans solubilities in aqueous alkanolamine solutions is important in acid gas removal process simulation and design. In previous works, alkanes, aromatics and mercaptans solubilities in different aqueous alkanolamine solutions have been successfully represented by using the PR-CPA EoS. In this work, the PR-CPA EoS with a pseudo-chemical reaction approach is developed and applied to describe the solubility of acid gases in aqueous alkanolamines solutions. The results are in good agreement with a wide range of experimental data. Other relevant properties such as water content, electrolytes speciation and enthalpy of absorption are accurately predictd by PR-CPA EoS.

KW - CPA

KW - Acid gases

KW - Solubility

KW - Alkanolamine

KW - Natural gas

U2 - 10.1016/j.fluid.2018.04.019

DO - 10.1016/j.fluid.2018.04.019

M3 - Journal article

VL - 471

SP - 74

EP - 87

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

SN - 0378-3812

ER -

Improvement of the PR-CPA equation of state for modelling of acid gases solubilities in aqueous alkanolamine solutions

Abstract

Bibliographical note

Keywords

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