Paper presented at the 8th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Mauritius, 11-13 July, 2011.
In this study, the one-dimensional rate based model is
developed for predicting the performance of the CO2 absorber
column using aqueous monoethanolamine (MEA) solution. To
determine the concentration of each species and temperature
distribution along the column height, mass and heat balance
equations of vapor and liquid phase are coupled with chemical
reactions in MEA-CO2-H2O system. The two-film model is
applied to estimate the mass transfer in the vapour and liquid
film. To calculate the enhancement factor, three types of
reaction rate coefficient of the CO2/aqueous MEA reaction are
considered. The mathematical and reaction kinetics models
used in this study are validated in the comparison of simulation
results with experimental data given in the literature. The
simulation results are in good agreement with the data in the
literature. In addition, three types of reaction rate coefficient
suggested by Hikita et al., Versteeg et al. and Aboudheir et al.
are considered. The performance of CO2 absorber column with
respect to the reaction rate coefficients is compared with
experimental data.
