Distribution of MEG and methanol in well-defined hydrocarbon and water systems: Experimental measurement and modeling using the CPA EoS

Liquid–Liquid Equilibria of Binary, Ternary, and Quaternary Systems Involving Monoethylene Glycol, Water, Toluene, p-Xylene, Hexane, and Octane

“…Some data are from literature. 18,21,25,26 In general terms the data, from literature and those from the present and previous studies carried out in our group, 25 are very consistent: ethylbenzene from Riaz et al 26 and p-xylene (the present study) show very close solubility as they are isomers. On the other hand, the solubility of the aromatics in the polar phase reasonably increases from ethylbenzene to benzene through toluene, this trend of course expected due to the increase of the polarity of the aromatic compound (or in other words, due to the decrease of the hydrophobicity of the hydrocarbons).…”

Modeling the liquid–liquid equilibrium of petroleum fluid and polar compounds containing systems with the PC-SAFT equation of state

“…The compositions of these fluids are listed in Table 3, and in this work the composition of hydrocarbons up to nine carbon numbers are kept during the characterization procedure, so the related information will not be duplicated in the characterization results hereafter. The data are taken from Riaz et al [17,18,19,20] and Frost et al [21,22], and more details can be found in those works. All the measurements are done at the atmospheric pressure condition.…”

“…It is tried to use more pseudo-components, e.g. twelve as done in the works of Riaz [17][18][19][20] and Frost [21], to investigate the possibility of improving the modeling performance. As presented in Figure 10, the number of pseudo-components has negligible impact on the modeling results, which is consistent with the conclusion from the previous work [4].…”

Liquid–Liquid Equilibria of Binary and Ternary Systems Methanol/Water + n-Hexane, + n-Octane, + n-Dodecane, and + n-Hexadecane in the Temperature Range between T = 283.15 K and T = 333.15 K

“…1,2 The determination of methanol flow rate to be injected requires, in addition to a reliable hydrate model, quality data of the vapor−liquid−liquid equilibrium of hydrocarbon− water−methanol mixtures in order to estimate the methanol "lost" in the hydrocarbon phase. 3 The present study is part of a series of work to address the problems of gas hydrates. 4,5 One binary system (methanol + n-dodecane) and four ternary systems (methanol/water + n-hexane, or + n-octane, or + n-dodecane, or + n-hexadecane) under atmospheric pressure and at three temperatures (between 283.15 and 333.15 K) were studied.…”