Omid Sabbagh - Department of Chemical Engineering Ferdowsi, University of Mashhad, Mashhad, Iran
Maysam Vahidi Ferdowsi - Department of Chemical Engineering, Ferdowsi University of Mashhad, Iran
Mohammad Ali Fanaei - Department of Chemical Engineering, Ferdowsi University of Mashhad, Iran

In this study, the solubility of acid gases of hydrogen sulfide and carbon dioxide in MDEA and MDEA/PZ aqueous solutions was evaluated by different thermodynamic packages. Comparison of modeling results with a series of laboratory and industrial data released from ۱۹۹۷ to ۲۰۱۰ indicates the high accuracy of ACID GAS thermodynamic package (Aspen HYSYS ۸.۳) to prediction of acid gases solubility in the mentioned solutions compared to the ELECNRTL thermodynamic package (Aspen plus V۸.۲), especially in the range of acid gases operational concentration in the gas refineries.

MDEA, Pz, Thermodynamic package, Acid gas solubility, Acid gas, ELECNRTL