Experimental studies of phase equilibria in mixtures relevant for the description of natural gases

Extended corresponding states model for fluids and fluid mixtures

“…7 we present results for the azeotropic system (CO 2 + C 2 H 6 ) [105]. With regards to the data of Raabe et al [88] for the systems (CH 4 + C 2 H 6 ) and (N 2 +C 2 H 6 ) we obtained an AAD of 1.1% in saturated-liquid densities and 5% in saturated-vapour densities.…”

Use of ab initio interaction energies for the prediction of phase equilibria in the system nitrogen–ethane

“…Predictions of the high-pressure VLE and VLLE have been made using the Soave-Redlich-Kwong equation of state (SRK-EOS) with ab initio-NRTL and ab initio-UNIQUAC in the PSRK-mixing rule. 7 The deviations of the calculated pressures from measurements [8][9][10][11][12][13][14][15][16][17] Dp…”

Nucleation in Liquid Ethane with Small Additions of Methane

“…In the calculations employing the formulas of homogeneous nucleation theory (2–8) use was made of data on the thermophysical parameters of pure ethane, methane and ethane–methane solutions. − The nucleation process proceeds in a superheated liquid at a temperature T > T s ( x , p ) and a pressure p < p s ( x , T ). Therefore, strictly speaking, all of the thermophysical parameters of the liquid that appear in calculation formulas refer to the metastable state ( T , p , x ).…”

“…The surface tension of ethane and ethane–methane solutions was measured in our laboratory. , The pressures of saturated vapors and the orthobaric densities of pure ethane and methane have been taken from the monographs, , the coefficient of viscosity from ref . The parameters of phase equilibria for ethane–methane solutions were calculated from data of refs and − . The diffusion coefficient D 2 was evaluated by the Stokes–Einstein formula.…”