Li B., Zhang N., Smith R., 2014, Rate-Based Modelling of CO2 Capture Process by Reactive Absorption with MEA, Chemical Engineering Transactions, 39, 13-18.
A rate-based model of CO2 capture process by MEA is built within Aspen Plus V8.0 software in this study. The model is built on the basis of an example model coming along with Aspen Plus V8.0 , thermodynamic model of ENRTL-RK is adopted and both absorption and desorption columns are modelled by rate-based model. Important improvements have been achieved for its accuracy. To be specific, the washing section of the absorption column is strictly modelled and the error on mass balance of MEA is greatly reduced. In addition, the model is validated using the recently published pilot-scale experiment results of the absorption of CO2 by MEA and structured packing Sulzer of mellapak is employed for both absorption and desorption columns in the process. It predicts the experimental profiles of the temperature and the concentration of CO2 in the liquid phase with an accuracy of ±4%, and obviously much better than recently reported model of ±8 %.
