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The refined e-NRTL model applied to CO2–H2O–alkanolamine systems by Erik T. Hessen; Tore Haug-Warberg; Hallvard F. Svendsen is a Engineering article available to read on EtoBox.

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The electrolyte NRTL (e-NRTL) model by Chen (1982) and Chen and Evans (1986) is perhaps the most commonly used activity coefficient based thermodynamic model for industrial systems. It has been shown by Bollas et al. (2008) that the original e-NRTL model is inconsistent for systems with multiple cations and/or anions, in the same work the model equations for the so-called refined e-NRTL model were given. In this work the refined e-NRTL model is applied to CO 2 -H 2 O-alkanolamine systems. The interaction parameters of the refined e-NRTL model are regressed to partial pressure of CO 2 , binary vapour-liquid-equilibrium, freezing point depression data and excess enthalpy data. The model is in the end used to predict partial pressures and speciation for the CO 2 -H 2 O-MEA and CO 2 -H 2 O-MDEA systems.

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Author

Erik T. Hessen; Tore Haug-Warberg; Hallvard F. Svendsen

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0009-2509)

Published

2010

Language

EN

Field

Engineering (Physical Sciences)