New association schemes for mono-ethylene glycol: Cubic-Plus-Association parameterization and uncertainty analysis

Abstract

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Ternary Vapor–Liquid Equilibrium Measurements and Modeling of Ethylene Glycol (1) + Water (2) + Methane (3) Systems at 6 and 12.5 MPa

“…Phase equilibrium data is essential for the design of novel subsea natural gas dehydration installations. For this purpose, sixteen new data points have been measured for the ternary system: ethylene glycol (1) + water (2) + methane (3). Three independent variables were considered in this study:…”

“…Additionally, its lower viscosity aids direct injection applications, especially at lower temperatures. 3 Very few glycol-related data sets are found in the open literature. Natural gas related binary data for MEG consists mainly of gas solubility measurements [4][5][6][7][8][9][10][11] in mixtures with methane, ethane, nitrogen and carbon dioxide.…”

Multicomponent Vapor–Liquid Equilibrium Measurement and Modeling of Ethylene Glycol, Water, and Natural Gas Mixtures at 6 and 12.5 MPa

“…More recently, the 4F association scheme, which consists of two binary (which can accept or donate an electron) and two negative association sites, has been proposed for MEG. 37 In the literature, natural gas components from this study are typically modeled as nonassociating compounds. For the components in this study, CO2 is the only exception as it is often modelled as a cross-associating (solvating) compound.…”

“…For 5 of the natural gas components, no literature parameters could not be found. In order to regress new parameter sets, we incorporated the bootstrap method and uncertainty analysis 37,45. Pure component vapor pressure and saturated liquid density correlations from the DIPPR Database49…”

High-pressure experimental vapour-liquid-liquid equilibrium measurements and modelling for natural gas processing: Equipment validation, and the system CH4+nC6H14+H2O

“…New BIPs were required for C1+nC6 (both models) and nC6+H2O (sPC-SAFT only). The same uncertainty analysis procedures have been implemented as in our previous work on parameterization [5,46]. Parameter confidence intervals were determined using the bootstrap method [47] with 256 repetitions.…”