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Prediction of absorption enthalpy from solubility data for the MDEA-H2O-CO2 system

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3 Author(s)
Chen, Jian ; Department of Chemical Engineering, Tsinghua University, Beijing 100084, China ; Liu, Yi ; Liu, Jinchen

A thermodynamic model about the absorption of CO2 by a solution of methyl diethanol amine (MDEA) and water was established with the electrolytic-NRTL (non-random two-liquid) equation for the calculation of activity coefficients of components in the solution. The gas absorption solubility data was used to obtain the parameters in the electrolytic-NRTL equation by regression and to directly predict the absorption enthalpy.

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Tsinghua Science and Technology  (Volume:7 ,  Issue: 1 )