ABSTRACT

The separation of low temperature coal tar can be carried out using extraction technology, especially for the collection of phenols. Liquid-liquid equilibria data for the ternary mixture of 1- heptane + phenols + ethylene glycol were obtained at 323.15 K and 343.15 K under atmospheric pressure, where phenols refer to phenol, o-cresol, m-cresol and p-cresol. The tie lines were displayed in ternary phase diagrams. The distribution coefficient and selectivity were calculated according to the measured tie-line data. The calculation results revealed that the selectivity was large enough for the extraction application. The root-mean-square deviation (RMSD) value of the NRTL model was a little lower than that of UNIQUAC, demonstrating NRTL can better fit the experimental data.

Compounds

#	Formula	Name
1	C7H16	heptane
2	C6H6O	phenol
3	C7H8O	2-methylphenol
4	C7H8O	3-methylphenol
5	C7H8O	4-methylphenol
6	C2H6O2	1,2-ethanediol

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	6 2 1	Mass fraction - 1 ; Liquid mixture 1 Mass fraction - 1 ; Liquid mixture 2 Mass fraction - 2 ; Liquid mixture 2	Temperature, K; Liquid mixture 2 Mass fraction - 2; Liquid mixture 1	Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Chromatography Chromatography Chromatography	17
POMD	3 6 1	Mass fraction - 1 ; Liquid mixture 1 Mass fraction - 1 ; Liquid mixture 2 Mass fraction - 3 ; Liquid mixture 2	Temperature, K; Liquid mixture 2 Mass fraction - 3; Liquid mixture 1	Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Chromatography Chromatography Chromatography	17
POMD	6 4 1	Mass fraction - 1 ; Liquid mixture 1 Mass fraction - 1 ; Liquid mixture 2 Mass fraction - 4 ; Liquid mixture 2	Temperature, K; Liquid mixture 2 Mass fraction - 4; Liquid mixture 1	Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Chromatography Chromatography Chromatography	17
POMD	5 6 1	Mass fraction - 1 ; Liquid mixture 1 Mass fraction - 1 ; Liquid mixture 2 Mass fraction - 5 ; Liquid mixture 2	Temperature, K; Liquid mixture 2 Mass fraction - 5; Liquid mixture 1	Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Chromatography Chromatography Chromatography	16

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Liquid-liquid equilibria for the extraction of phenols from alkane using ethylene glycol

Dai, F.[Fangfang], Xin, K.[Kun], Song, Y.[Yuhe], Shi, M.[Midong], Zhang, H.[Haipeng], Li, Q.[Qingsong]

ABSTRACT