Journal article
Thermodynamic modeling of CO2 absorption in aqueous N-Methyldiethanolamine using Extended UNIQUAC model
Department of Chemical and Biochemical Engineering, Technical University of Denmark1
Center for Energy Resources Engineering, Centers, Technical University of Denmark2
CERE – Center for Energy Ressources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark3
Department of Chemistry, Technical University of Denmark4
A Thermodynamic model that can predict the behavior of the gas sweetening process over the applicable conditions is of vital importance in industry. In this work, Extended UNIQUAC model parameters optimized for the CO2-MDEA-H2O system are presented. Different types of experimental data consisting of pure MDEA vapor pressure, vapor-liquid equilibrium (VLE) (total pressure and CO2 partial pressure), freezing point depression (SLE), excess enthalpy, heat capacity and heat of absorption were used to adjust model parameters.
The model was then used to predict the NMR spectroscopic data. The developed model accurately represents thermodynamic and thermal properties of the studied systems. The model parameters are valid in the temperature range from -15 to 200 °C, MDEA mass% of 5-75 and CO2 partial pressure of 0-6161.5 kPa.
| Language: | English |
|---|---|
| Year: | 2015 |
| Pages: | 295-306 |
| ISSN: | 18737153 and 00162361 |
| Types: | Journal article |
| DOI: | 10.1016/j.fuel.2014.12.002 |
| ORCIDs: | Sadegh, Negar , Stenby, Erling Halfdan and Thomsen, Kaj |
