Measurements and NRTL modeling of liquid-liquid equilibrium of dimethyl ether/bitumen

Experimental Measurement and Thermodynamic Modeling of Vapor–Liquid Equilibrium Data of C1/Bitumen, CO2/Bitumen, C1/CO2/Bitumen, C1/Diluent/Bitumen, and C1/CO2/Diluent/Bitumen Systems

“…The first pseudocomponent (PC1) is the saturates-rich component, and the second pseudo-component (PC2) is asphaltene-rich and has self-association with other PC2 and cross-association with PC1. 28−30 This bitumen characterization approach was considered in the previously reported works, 13,22,29 and the results were promising. The properties of the studied systems are listed in Table 1.…”

“…Thermodynamic modeling of phase equilibria in solvent/bitumen systems is based on equality of fugacity or activity of components in both phases. In VLE calculations of bitumen/solvent systems, a common assumption is that the vapor phase contains no bitumen, , which is valid according to the gas chromatography (GC) analysis of the vapor phase.…”

Liquid–Liquid Equilibrium Studies of Multicomponent Diluent/Bitumen System with Application to Solvent-Aided In Situ Bitumen Recovery

“…Injecting solvents along with steam during in situ recovery can cause the formation of vapor–liquid equilibrium (VLE) conditions as well as the condensation of solvent at reservoir temperatures, leading to the formation of liquid–liquid equilibrium (LLE). However, research on the complex LLE behavior of solvent/bitumen mixtures is limited. ,,− Yamchi et al ,, investigated the solvent/bitumen system and conducted LLE studies to determine the phase behavior of the mixture at different equilibrium conditions (temperatures of 22–100 °C and pressures up to a maximum of around 4 MPa). Khan , studied the solvent/bitumen system by conducting an LLE study at ambient temperature and pressures up to 13.5 MPa to gain insights into the behavior of this complex mixture.…”

Measurements and Correlations of Thermophysical Properties for Multicomponent Solvent/Live Bitumen Mixtures

“…They investigated the phase behavior and measured the thermophysical properties such as density, viscosity, and K -value of the EA/live bitumen system at temperatures and pressures up to 190 °C (463.15 K) and 4 MPa. Dimethyl ether (DME) also showed great potential as a prospective solvent for bitumen recovery in recent research. , Along the same line of research, Haddadnia et al studied the thermophysical properties, including the solubility, density, and viscosity of the DME/bitumen system at a temperature and pressure up to 150 °C (423.15 K) and 6 MPa, respectively. In another study, Sadeghi Yamchi et al performed the liquid–liquid study of the DME/bitumen system and reported the density, viscosity, and DME composition of the light phase of the mixture.…”

“…Dimethyl ether (DME) also showed great potential as a prospective solvent for bitumen recovery in recent research. , Along the same line of research, Haddadnia et al studied the thermophysical properties, including the solubility, density, and viscosity of the DME/bitumen system at a temperature and pressure up to 150 °C (423.15 K) and 6 MPa, respectively. In another study, Sadeghi Yamchi et al performed the liquid–liquid study of the DME/bitumen system and reported the density, viscosity, and DME composition of the light phase of the mixture. Bin Dahbag et al also reported measurements of ammonia solubility in Athabasca bitumen and ammonia-saturated oil density at different temperatures and pressures, with application to solvent-aided bitumen recovery from oil sands.…”