مسعود مفرحی

The purpose of this work is to investigate the ability of perturbed-chain statistical associating fluid theory (PC-SAFT) in correlating the vapor pressure and saturated liquid density of pure diethanolamine (DEA) and also correlating vapor-liquid equilibria(VLE) of the DEA water and DEA water CO2 systems. Results showed that PC-SAFT could accurately describe the properties of the pure diethanolamine. Then VLE of the aqueous diethanolamine solutions were calculated by temperature-independent binary interaction parameters. After tuning binary interaction parameter between DEA and water, solubility of CO2 in the aqueous dithanolamine solution were correlated and compared to the experimental data. The results indicated that PC-SAFT could successfully described the equilibrium properties of the aqueous diethanolamine solution and solubility of CO2 in aqueous DEA solutions.