Modeling of H2S solubility in aqueous MDEA solution using electrolyte SRK plus association equation of state

H2S solubility in MDEA aqueous solution at different solution compositions, temperatures, pressures, and acid gas loadings was correlated using electrolyte SRK-cubic plus association equation of state. A total of 302 experimental data were used in this work. At first pure components parameters were obtained from literatures. Then binary interaction parameters were calculated through binary subsystems investigation. Finally, ternary system modeled using a reactive bubble point pressure calculation method. Considering number of binary interaction parameters that should be optimized, three scenarios were proposed. All of the scenarios present good results with acceptable absolute average deviation percentage (AAD%) but the third one shows better outputs. The AAD% in this scenario is 17.02.