Vapor-liquid equilibria in the methane-diethylene glycol-water system at 298.15 and 323.15 K

Abstract

The water contents of compressed methane gas In equilibrium with water and diethylene glycol-water solutions of 0.156, 0.472, and 0.662 mole fraction water were measured at 298.15 and 323.15 K and pressures of 3, 5, and 8 MPa. The solubilities of methane In the diethylene glycol, water, and diethylene glycol-water solutions were also measured under the same conditions of the water content measurement. The methane solubility data were analyzed with the Krlchevsky-Kasarnovsky equation to obtain the Henry constant of methane In the diethylene glycol-water solutions.Gas dehydration plays an important part in gas purification processes. Diethylene glycol and triethylene glycol are effective gas dehydrating agents. A knowledge of the vapor-liquid equilibria in the gas-glycol-water system is helpful in designing an effective dehydration system. Takahashi et al. (1) have reported the vapor-liquid equilibrium data in the carbon dioxide-diethylene glycol-water and carbon dioxide-triethylene glycol-water systems. In this study, we measured the vapor-liquid equilibria in the methane-diethylene glycol-water system at 298.15 and 323.15 K and pressures of 3, 5, and 8 MPa.

Quantitative Raman spectroscopic investigation of geo-fluids high-pressure phase equilibria: Part II. Accurate determination of CH4 solubility in water from 273 to 603 K and from 5 to 140 MPa and refining the parameters of the thermodynamic model

“…Frolich et al [11] conducted the first study of the solubility of methane in water under certain high pressure conditions (2-14.2 MPa). Since then, many studies, e.g., Michels et al [12]; Culberson et al [13]; Culberson and Mcketta [14]; Duffy et al [15]; O'Sullivan and Smith [16]; Amirijafari and Campbell [8]; Sultanov et al [17]; Price [20]; Cramer [25]; Yokoyama et al [26]; Wang et al [27]; Gao et al [28]; Lekvam and Bishnoi [29]; Song et al [30]; Dhima et al [31]; Yang et al [32]; Chapoy et al [33,37]; Kiepe et al [34]; Kim et al [35]; Wang et al [36]; Qin et al [38]; Campos et al [9], have been performed at intermediate and high-pressures. But most of them are concentrated in the temperature and pressure ranges of 293-444 K and 0.1-70 MPa.…”

Methane and Water Phase Equilibria in the Presence of Single and Mixed Electrolyte Solutions Using the Cubic-Plus-Association Equation of State

“…Experimental data at 283.1 K from Kosyakov et al, 1982 (■ ■), Althaus, 1999 (■) and Chapoy et al (2003) (■). Experimental data at 298.1 K from Rigby and Prausnitz, 1968 (◆), Yokoyama et al, 1988 (◆ ◆) and Chapoy et al, 2003 (◆). Experimental data at 313.13 K from Yarym-Agaev et al, 1985 (▲ ▲) and Chapoy et al, 2003 (▲).…”

Development and testing of a new apparatus for the measurement of high-pressure low-temperature phase equilibria

“…Fig. 5 presents the results relative to the solubility of methane in water at 298 K, with a comparison to several literature sources [21][22][23][24][25][26][27][28][29][30][31]. Data sets which deviate significantly from the generality of the other literature sources were left out of the representation [32,33].…”

“…Results obtained for the liquid phase in the analytical study of the system methane + water at 298 K, and comparison with literature[21][22][23][24][25][26][27][28][29][30][31].…”