Measurement and Correlation of the Solubility of Carbon Dioxide in the Mixtures of Aqueous Monoethanolamine Solution and Benzoic Acid
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- 作者：Hyun Seung Lee ; Myoung Do Seo ; Jeong Won Kang ; Dae Ryook Yang
- 刊名：Journal of Chemical & Engineering Data
- 出版年：2012
- 出版时间：December 13, 2012
- 年：2012
- 卷：57
- 期：12
- 页码：3744-3750
- 全文大小：398K
- 年卷期：v.57,no.12(December 13, 2012)
- ISSN：1520-5134
文摘
The solubility of CO2 in the mixture of aqueous monoethanolamine (MEA) with benzoic acid was measured and correlated using a reaction-phase equilibrium model. The solubility of CO2 in 15 wt % aqueous MEA solution was measured at a temperature of 313.2 K and pressures up to 200 kPa. Also, the solubility of CO2 in the mixtures with various weight ratios of benzoic acid, MEA, and water were measured at a temperature of 313.2 K and pressures ranging from (1 to 250) kPa. The weight ratios (acid/MEA/water) were 1:15:85, 2:15:85, 10:15:85, 15:15:85, 1:14:85, 2:13:85, and 5:10:85. Reaction equilibrium constants of the Kent鈥揈isenberg model were used for the CO2鈥揗EA鈥搘ater mixture, and new equilibrium constants involving benzoic acid were estimated using experimental data. The concentration of species in the liquid phase was estimated as a function of CO2 loading, and the effect of adding benzoic acid can be predicted within reasonable accuracy using the proposed model.