The densities and viscosities of partially carbonated monoethanolamine
(MEA), diethanolamine (DEA),
and N-methyldiethanolamine (MDEA) solutions were measured at
298 K. With increasing carbon dioxide
loadings, significant increases in both density and viscosity were
observed. These results were combined
with literature data to produce correlations for alkanolamine solution
density and viscosity as a function
of amine concentration, carbon dioxide loading, and temperature.
The resulting single-amine correlations
were used to predict the densities and viscosities of DEA + MDEA and
MEA + MDEA blends. Predictions
are compared with data measured for these blends.
New data are reported on the heat capacity of CO 2 -loaded, aqueous solutions of monoethanolamine (MEA), diethanolamine (DEA), N-methyldiethanolamine (MDEA), and aqueous MDEA-based blends with MEA and DEA.
A procedure using only fundamental physico‐chemical data is developed for the design and analysis of packed columns used for solvent recovery in gas purification processes involving chemical reaction. The results of 173 experiments on the mass transfer performance of a pilot‐scale regenerator stripping CO2 from loaded monoethanolamine solutions are reported and compared with model predictions. Anomolous responses of the overall mass transfer coefficient to changes in process conditions are observed and explained by the process model which is found to predict correctly both the magnitude of the coefficient and its response.
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