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- W804667888 abstract "In gas sweetening, acid gases such as CO 2 and/or H 2S are usually removed by chemical absorption through aqueous amine solutions such as N-Methylidethanolamine (MDEA) solution. Reliable prediction of equilibrium properties (vapor- liquid equilibrium and species distribution) is needed for a rigorous design of such absorption processes. Information on energy requirements can also be obtained from a reliable vaporliquid equilibrium thermodynamic model. The currently used methods for correlating/predicting the simultaneous solubility of H 2S and CO 2 in aqueous MDEA solutions require accurate experimental solubility data of single and mixed gases, which, in general, confine their applicability in the experimental region. The purpose of this study is to develop a new theoretical thermodynamic model based on incorporating thermodynamic relationships that correlates the equilibrium and solubility constants to the Gibbs free energy of reaction, leading to an enhanced predictive capability of the model. In this work the Pitzer model is used to account for activity and specific ion interactive forces. This will allow to take into account the effect of the presence of all cations and anions such as thermally stable salts, dissolved organic species and amine degradation products that are usually encountered in absorption units. The suggested model can be a very powerful tool that could be of significant importance in the design of amine absorption processes as well as in simulations of the operating variables for optimization of gas sweetening systems." @default.
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- W804667888 date "2014-01-01" @default.
- W804667888 modified "2023-09-23" @default.
- W804667888 title "A NEW THEORETICAL THERMODYNAMIC MODEL FOR THE SOLUBILITY OF ACID GASES IN AQUEOUS SOLUTION OF N-METHYLIDETHANOLAMINE" @default.
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