ABSTRACT

Isothermal gas-liquid equilibrium (GLE) data have been measured for the system SO2 + N2 + ethylene glycol (EG) + water at 298.15 K and 123.15 kPa and SO2 partial pressures in the range of (0 to 120) Pa. Measurements were carried out by a saturation method using a glass absorption apparatus, which was controlled at constant temperature by a thermostatic circulation bath with a Beckmann thermometer. The GLE data were obtained with relative uncertainties within ( 3.5 % for SO2 concentration in the gas phase and ( 0.6 % for SO2 concentration in the liquid phase. The measurement showed that the addition of water to EG enhanced the solubility of SO2 compared with pure EG and that the 80 % volume fraction of EG in ethylene glycol + water solution is a more reasonable composition used as the desulfurization solution. The results of this work can be used to provide important GLE data for the design and operation of the absorption and desorption process in flue gas desulfurization (FGD) with potential industrial application of EG aqueous solutions.

Compounds

#	Formula	Name
1	O2S	sulfur dioxide
2	N2	nitrogen
3	C2H6O2	1,2-ethanediol
4	H2O	water

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	3	Surface tension liquid-gas, N/m ; Liquid	Temperature, K; Liquid		Liquid Gas	DROPV::UFactor:4	4
POMD	3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid		Liquid Gas	CAPTUB::UFactor:8	4
POMD	3 4	Surface tension liquid-gas, N/m ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid		Liquid Gas	DROPV:UFactor:4	52
POMD	3 4	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid		Liquid Gas	CAPTUB:UFactor:8	52
POMD	1 2 4	Mass concentration, kg/m3 - 1 ; Liquid	Mole fraction - 1; Gas	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Gas	Chromatography	10
POMD	3 1 2	Mass concentration, kg/m3 - 1 ; Liquid	Mole fraction - 1; Gas	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Gas	Chromatography	17

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Gas-Liquid Equilibrium Data for a Mixture Gas of Sulfur Dioxide + Nitrogen with Ethylene Glycol Aqueous Solutions at 298.15 K and 123.15 kPa

Zhang, J.[Jianbin], Zhang, P.[Pengyan], Han, F.[Fang], Chen, G.[Guohua], Deng, R.[Ronghua], Wei, X.-H.[Xiong-Hui]

ABSTRACT