Correlation and prediction of the solubility of carbon dioxide in aqueous alkanolamine and mixed alkanolamine solutions

Sang Hyun Park; Ki Bong Lee; Jae Chun Hyun; Sung Hyun Kim

doi:10.1021/ie010252o

Correlation and prediction of the solubility of carbon dioxide in aqueous alkanolamine and mixed alkanolamine solutions

Sang Hyun Park, Ki Bong Lee, Jae Chun Hyun, Sung Hyun Kim

Research output: Contribution to journal › Article › peer-review

138 Citations (Scopus)

Abstract

The solubility of carbon dioxide in aqueous solutions of monoethanolamine (MEA), diethanolamine (DEA), 2-amino-2-methyl-1-propanol (AMP), MEA + AMP, and DEA + AMP was measured at 40, 60, and 80°C. Equilibrium partial pressures of CO₂ ranged from approximately 0.1 to 50 psia. The modified Kent-Eisenberg model was used to determine the deprotonation constant and carbamate stability constant for MEA, DEA, and AMP solutions at different temperatures. The solubility of CO₂ in aqueous mixtures of AMP with MEA or DEA has been predicted using the modified Kent-Eisenberg model and reaction equilibrium constants, which were determined from each amine. The predicted values were in good agreement with the experimental data over a wide range of equilibrium CO₂ partial pressure, temperature, and solution concentration. The concentration of the liquid-phase species was calculated as a function of CO₂ loading, and some qualitative trends were obtained.

Original language	English
Pages (from-to)	1658-1665
Number of pages	8
Journal	Industrial and Engineering Chemistry Research
Volume	41
Issue number	6
DOIs	https://doi.org/10.1021/ie010252o
Publication status	Published - 2002 Mar 20

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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10.1021/ie010252o

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title = "Correlation and prediction of the solubility of carbon dioxide in aqueous alkanolamine and mixed alkanolamine solutions",

abstract = "The solubility of carbon dioxide in aqueous solutions of monoethanolamine (MEA), diethanolamine (DEA), 2-amino-2-methyl-1-propanol (AMP), MEA + AMP, and DEA + AMP was measured at 40, 60, and 80°C. Equilibrium partial pressures of CO2 ranged from approximately 0.1 to 50 psia. The modified Kent-Eisenberg model was used to determine the deprotonation constant and carbamate stability constant for MEA, DEA, and AMP solutions at different temperatures. The solubility of CO2 in aqueous mixtures of AMP with MEA or DEA has been predicted using the modified Kent-Eisenberg model and reaction equilibrium constants, which were determined from each amine. The predicted values were in good agreement with the experimental data over a wide range of equilibrium CO2 partial pressure, temperature, and solution concentration. The concentration of the liquid-phase species was calculated as a function of CO2 loading, and some qualitative trends were obtained.",

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T1 - Correlation and prediction of the solubility of carbon dioxide in aqueous alkanolamine and mixed alkanolamine solutions

AU - Park, Sang Hyun

AU - Lee, Ki Bong

AU - Hyun, Jae Chun

AU - Kim, Sung Hyun

PY - 2002/3/20

Y1 - 2002/3/20

N2 - The solubility of carbon dioxide in aqueous solutions of monoethanolamine (MEA), diethanolamine (DEA), 2-amino-2-methyl-1-propanol (AMP), MEA + AMP, and DEA + AMP was measured at 40, 60, and 80°C. Equilibrium partial pressures of CO2 ranged from approximately 0.1 to 50 psia. The modified Kent-Eisenberg model was used to determine the deprotonation constant and carbamate stability constant for MEA, DEA, and AMP solutions at different temperatures. The solubility of CO2 in aqueous mixtures of AMP with MEA or DEA has been predicted using the modified Kent-Eisenberg model and reaction equilibrium constants, which were determined from each amine. The predicted values were in good agreement with the experimental data over a wide range of equilibrium CO2 partial pressure, temperature, and solution concentration. The concentration of the liquid-phase species was calculated as a function of CO2 loading, and some qualitative trends were obtained.

AB - The solubility of carbon dioxide in aqueous solutions of monoethanolamine (MEA), diethanolamine (DEA), 2-amino-2-methyl-1-propanol (AMP), MEA + AMP, and DEA + AMP was measured at 40, 60, and 80°C. Equilibrium partial pressures of CO2 ranged from approximately 0.1 to 50 psia. The modified Kent-Eisenberg model was used to determine the deprotonation constant and carbamate stability constant for MEA, DEA, and AMP solutions at different temperatures. The solubility of CO2 in aqueous mixtures of AMP with MEA or DEA has been predicted using the modified Kent-Eisenberg model and reaction equilibrium constants, which were determined from each amine. The predicted values were in good agreement with the experimental data over a wide range of equilibrium CO2 partial pressure, temperature, and solution concentration. The concentration of the liquid-phase species was calculated as a function of CO2 loading, and some qualitative trends were obtained.

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JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 6

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Correlation and prediction of the solubility of carbon dioxide in aqueous alkanolamine and mixed alkanolamine solutions

Abstract

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