TY - JOUR
T1 - High-pressure vapor-liquid equilibria in the nitrogen-n-nonane system
AU - Silva-Oliver, Guadalupe
AU - Eliosa-Jiménez, Gaudencio
AU - García-Sánchez, Fernando
AU - Avendaño-Gómez, Juan Ramón
N1 - Funding Information:
This work was supported by the Molecular Engineering Program of the Mexican Petroleum Institute under projects D.00182 and I.00348. G. Silva-Oliver gratefully acknowledges the National Council for Science and Technology of Mexico (CONACyT) for their pecuniary support through a Ph.D. fellowship (117349).
PY - 2007/8
Y1 - 2007/8
N2 - New experimental vapor-liquid equilibrium data of the N2-n-nonane system were measured over a wide temperature range from 344.3 to 543.4 K and pressures up to 50 MPa. A static-analytical apparatus with visual sapphire windows and pneumatic capillary samplers was used in the experimental measurements. Equilibrium phase compositions and vapor-liquid equilibrium ratios are reported. The new results were compared with those reported by other authors. The comparison showed that the pressure-liquid phase composition data reported in this work are in good agreement with those determined by others. The experimental data were modeled with the PR and PC-SAFT equations of state by using one-fluid mixing rules and a single temperature-independent interaction parameter. Results of the modeling showed that the PC-SAFT equation was superior to the PR equation in correlating the experimental data of the N2-n-nonane system.
AB - New experimental vapor-liquid equilibrium data of the N2-n-nonane system were measured over a wide temperature range from 344.3 to 543.4 K and pressures up to 50 MPa. A static-analytical apparatus with visual sapphire windows and pneumatic capillary samplers was used in the experimental measurements. Equilibrium phase compositions and vapor-liquid equilibrium ratios are reported. The new results were compared with those reported by other authors. The comparison showed that the pressure-liquid phase composition data reported in this work are in good agreement with those determined by others. The experimental data were modeled with the PR and PC-SAFT equations of state by using one-fluid mixing rules and a single temperature-independent interaction parameter. Results of the modeling showed that the PC-SAFT equation was superior to the PR equation in correlating the experimental data of the N2-n-nonane system.
KW - Critical point
KW - Enhanced oil recovery
KW - Equation of state
KW - Phase envelope
KW - Stability analysis
KW - Vapor-liquid equilibria
UR - http://www.scopus.com/inward/record.url?scp=34249071064&partnerID=8YFLogxK
U2 - 10.1016/j.supflu.2007.01.006
DO - 10.1016/j.supflu.2007.01.006
M3 - Artículo
SN - 0896-8446
VL - 42
SP - 36
EP - 47
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
IS - 1
ER -