Transport properties of binary liquid mixtures - Candidate solvents for optimized flue gas cleaning processes

Abstract

Thermal conductivities and viscosities of three pure chemicals, monoethanolamine (MEA), tetraethylene glycol dimethyl ether (TEGDME) and polyethylene glycol 200 (PEG 200) and two binary mixtures (MEA++TEGDME and MEA+ PEG 200) were measured at six temperatures: 298.15, 303.15, 308.15, 313.15, 318.15 and 323.15 K and atmospheric pressure. Measurement of the thermal conductivities was based on a transient hot wire measurement setup, while the viscosities were measured with a digital Stabinger SVM 3000/G2 viscometer. From these data, deviations in the thermal conductivity and viscosity were calculated and fitted to the Redlich-Kister equation. Thermal conductivities of mixtures were correlated using the Filippov, Jamieson, Baroncini and Rowley models, while the viscosity data were correlated with the Eyring-UNIQUAC, Eyring-NRTL and McAlister models.