| 초록 |
Phase equilibrium calculation of electrolyte-mixed solvent systems is important in separation processes including absorption. In this study, a thermodynamic model was applied for representing vapor-liquid equilibrium in CO2-alkanolamine-water system. As the alkanolamine, MEA (monoethanolamine), the most conventional absorbent in gas processing industries, was selected. Activity coefficients are represented with the Electrolyte Non-Random Two Liquid (NRTL) equation proposed by Chen and coworkers. This model treats long-range ion-ion interactions and local interactions between all liquid phase specise. Both water and MEA were treated as solvents. The experimental partial pressure data and calculated by Electrolyte-NRLT parameters from literatures were compared. |
