Use of the NRTL equation for simultaneous correlation of vapour-liquid equilibria and excess enthalpy |
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| Authors: | K. A. G. Schmidt Y. Maham A. E. Mather |
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| Affiliation: | (1) Department of Physics and Technology, University of Bergen, Allegatén 55, 5007 Bergen, Norway;(2) Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 2G6, Canada |
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| Abstract: | The NRTL model has been used to correlate the data for the aqueous alkanolamine systems of (MEA+H2O), (DEA+H2O) and (MDEA+H2O). The model was successfully applied to correlate simultaneously the excess enthalpy, vapour-liquid equilibria, and low temperature activity coefficients. A large database of data was collected for the investigation and it covers a wide range of composition, temperature and pressures. It was found that the form of the binary interaction parameters used by Posey (1996) with a variable non-randomness parameter gave the best results. |
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| Keywords: | diethanolamine excess properties infinite dilution methyldiethanolamine modelling monoethanolamine NRTL VLE |
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