Integrated mathematical modeling for prediction of rich CO2 absorption in structured packed column at elevated pressure conditions.

Modeling and simulation on lean carbon dioxide (CO 2 ) absorption has been widely studied for low pressure conditions. However, modeling on rich CO 2 absorption in packed column requires consideration on significant decrease of total gas flow rate along the column. In this work, the absorption of CO 2 in countercurrent structured packed column at 50% concentration level in inlet gas was modeled to predict the mass transfer of CO 2 from gas phase into liquid phase. The integrated mathematical model, which is a combination of hydraulic and mass transfer correlation from SRP II model as well as mass conservation equation, was developed to elucidate the CO 2 capture profile along the absorption column for pressure conditions of 0.1, 1, 3 and 5 MPa. Based on the validation with experimental data, the mathematical model developed in this study had satisfactorily represented the mass transfer behavior of high CO 2 concentration gas removal along the absorption column at elevated pressure conditions. [ABSTRACT FROM AUTHOR]