Prediction of Carbon Dioxide solubility in aqueous Methyldiethanolamine (MDEA) solution – A Kent-Eisenberg approach

In this project, the main objective is to develop a model based on the Kent-Eisenberg model to be used with MATLAB software. In this process, the acid component, which is CO2 gas will be reacted with the alkanolamine solution, aqueous MDEA.
The model is used to predict the loading of CO2 in aqueous solutions of MDEA under certain sets of parameters such as various temperature (400C – 1200C) and CO2 partial pressure (0.001 – 1000 kPa). Prediction was also made on the loading in solutions of MDEA based on 35 wt% and also 50 wt%. Prediction also were tested with different sets of MDEA concentration. Besides that, the prediction was compared with the results from the earlier literatures.
In the nutshell, it was found that the model was able to give a relatively good CO2 loading amount, over wide area of operating conditions as specified with better accuracy than the studied model, Xu et al (1998).