PρT measurements of Glycols (Mono-, Di- and Triethylene glycol) up to 423.15 K and 140.0 MPa and their aqueous solutions at atmospheric pressure

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Abstract

The density of three glycols, namely Monoethylene glycol (MEG), Diethylene glycol (DEG), and Triethylene glycol (TEG) was measured in the temperature range from 298.15 K to 423.15 K and pressures up to 140.0 MPa using a vibrating tube density meter Anton Paar DMA-HPM, coupled with a high-pressure mPDS 5 unit. The modified Tait-Tammann equation was used to correlate the experimental density, which gave an absolute average relative deviation (AARD) of less than 0.2%. Derived properties such as isobaric thermal expansion and isothermal compressibility coefficients were estimated and discussed. Furthermore, the density of the binary systems composed by the aforementioned glycols (1) + water (2) was also measured in the (273.15, 373.15) K temperature range at atmospheric pressure. The Cubic-Plus-Association (CPA) and the simplified version of the Perturbed-Chain Statistical Associating Fluid Theory (PC-SAFT) equations of state were used to correlate the newly measured data, with deviations less than 3.7% for pure component and 12.0% for the binary systems.
Original languageEnglish
Article number113980
JournalFluid Phase Equilibria
Volume577
Number of pages15
ISSN0378-3812
DOIs
Publication statusPublished - 2024
Event16th International Conference On Properties And Phase Equilibria For Product And Process Design (PPEPPD-2023) - Tarragona, Spain
Duration: 21 May 202325 May 2023

Conference

Conference16th International Conference On Properties And Phase Equilibria For Product And Process Design (PPEPPD-2023)
Country/TerritorySpain
CityTarragona
Period21/05/202325/05/2023

Keywords

  • PC-SAFT
  • Cubic-plus-association
  • Density
  • Experimental measurements
  • Glycol

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