Vapor + Liquid Equilibria for the Ternary System Methane + Ethane + Carbon Dioxide at 230 K and Its Constituent Binaries at Temperatures from 207 to 270 K

Abstract

Vapor-liquid equilibrium data for the binary system methane + carbon dioxide were measured at 230, 250, and 270 K. The ethane + carbon dioxide system was studied at 207, 210, 213, 230, 250, and 270 K, and the methane + ethane system was studied at 210, 230, 250, and 270 K. Ternary vapor-liquid equilibria for the methane + ethane + carbon dioxide system were measured at 230 K over the pressure range from 1.15 to 6.59 MPa. The Peng-Robinson equation of state was used to model the systems, and binary interaction coefficients are reported.

Experimental determination of the critical line for (carbon dioxide + ethane) and calculation of various thermodynamic properties for (carbon dioxide +n-alkane) using the PSRK model

“…The H E behaviour represents the temperature dependence of (1) Ohgaki and Katayama, (7) and Khazanova et al; (8) •, •, experimental v.l.e. data of Wei et al (14) at T = 230 K, Brown et al (15) at T = (250 and 270) K; Clark and Stead (16) at T = 260 K, Ohgaki and Katayama (7) at T = (283.15, 288.15, 291.15, and 298.15) K, and Fredenslund and Mollerup (17) at T = 293.15 K; , experimental azeotropic data of Kuenen, (2) Khazanova et al, (8) Wei et al, (14) Clark and Stead, (16) Fredenslund and Mollerup, (17) Davalos et al, (18) Khazanova and Lesnevskaya, (19) and Rowlinson and Sutton; (20) -, PSRK.…”

An advanced Gibbs-Duhem integration method: Theory and applications

“…8, it is seen that the vapor and liquid densities at coexistence are also in good agreement with experimental values. Unfortunately, the saturation pressures at T = 230 K and T = 270 K 84 and by Wei et al, 81 gray circles; our simulation results obtained with LB combining rules, ᭡; our simulation results computed with LB combining rules for interactions between like molecules and LHMcC combining rules for interactions between unlike molecules. ͑a͒ pxy data.…”

Integrated solvent and process design using a SAFT-VR thermodynamic description: High-pressure separation of carbon dioxide and methane

“…Properties of the relevant single component and binary mixture uids have been intensively studied, both from experimental (Fredenslund & Mollerup, 1974;Hamam & Lu, 1974;Davalos, Anderson, Phelps & Kidnay, 1976;Brown, Kidnay & Sloan, 1988;Nagahama, Konishi, Hoshino & Hirata, 1974;Ohgaki & Katayama, 1977;Wei, Brown, Kidnay & Sloan, 1995;Somait & Kidnay, 1978;Kaminishi & Toriumi, 1968;Xu, Dong, Wang & Shi, 1992b;Bian, 1992;Xu, Dong, Wang & Shi, 1992a;Bian, Wang & Shi, 1993;Koonce & Kobayashi, 1964;Reamer, Olds, Sage & Lacey, 1942;Lavender, Sage & Lacey, 1940;Bett, Juren & Reynolds, 1968;Lin, Sebastian, Simnick & Chao, 1979;Reamer & Sage, 1963;Iwai, Hosotani, Morotomi, Koga & Arai, 1994;Inomata, Tuchiya, Arai & Saito, 1986;Jennings & Schucker, 1996;Chou, Forbert & Prausnitz, 1990;Nagarajan & Robinson, 1986;Sebastian, Simnick, Lin & Chao, 1980) and theoretical perspectives (McCabe, Galindo, GilVillegas & Jackson, 1998a;McCabe, Gil-Villegas & Jackson, 1998;Nguyen-Huynh, Tran, Tamouza, Passarello, Tobaly et al, 2008), but experimental data for ternary mixtures (Dunyushkin, Skripka & Nenartovich, 1977) are scarce for the systems of interest here. Thus, we rst present the SAFT-VR molecular models developed for this work; we obtain transferable binary interaction parameters where necessary and compare the result of the SAFT-VR calculations for the phase equilibria of pure components and binary mixtures to experimental data.…”

“…For CO 2 + CH 4 mixtures, we use 317 experimental data points over 24 temperatures (Fredenslund & Mollerup, 1974;Hamam & Lu, 1974;Davalos, Anderson, Phelps & Kidnay, 1976;Brown, Kidnay & Sloan, 1988;Nagahama, Konishi, Hoshino & Hirata, 1974;Ohgaki & Katayama, 1977;Wei, Brown, Kidnay & Sloan, 1995;Somait & Kidnay, 1978;Kaminishi & Toriumi, 1968;Xu, Dong, Wang & Shi, 1992b;Bian, 1992;Xu, Dong, Wang & Shi, 1992a;Bian, Wang & Shi, 1993). For CO 2 + C 10 and CH 4 + C 10 , we selected experimental data for pressures below 10 MPa and temperatures below 477 K. This corresponds to the operating range of the separation process that is being considered in our work.…”