TY - JOUR
T1 - High-pressure vapor-liquid equilibria in the nitrogen-n-pentane system
AU - Silva-Oliver, Guadalupe
AU - Eliosa-Jiménez, Gaudencio
AU - García-Sánchez, Fernando
AU - Avendaño-Gómez, Juan R.
N1 - Funding Information:
This work was supported by the Molecular Engineering Program of the Mexican Petroleum Institute under research projects D.00182 and D.00332. The authors thank Prof. Dominique Richon from École des Mines de Paris for the design and construction of the static-analytic apparatus. G. Silva-Oliver gratefully acknowledges the National Council for Science and Technology of Mexico (CONACyT) for their pecuniary support through a PhD fellowship (117349).
PY - 2006/12/20
Y1 - 2006/12/20
N2 - New experimental vapor-liquid equilibrium data of the N2-n-pentane system were measured over a wide temperature range from 344.3 to 447.9 K and pressures up to 35 MPa. A static-analytic 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-composition data reported in this work are in good agreement with those determined by others but they are closer to the mixture critical point at each temperature level. 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 fit the data satisfactorily even at the highest temperatures of study.
AB - New experimental vapor-liquid equilibrium data of the N2-n-pentane system were measured over a wide temperature range from 344.3 to 447.9 K and pressures up to 35 MPa. A static-analytic 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-composition data reported in this work are in good agreement with those determined by others but they are closer to the mixture critical point at each temperature level. 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 fit the data satisfactorily even at the highest temperatures of study.
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=34249035985&partnerID=8YFLogxK
U2 - 10.1016/j.fluid.2006.09.018
DO - 10.1016/j.fluid.2006.09.018
M3 - Artículo
SN - 0378-3812
VL - 250
SP - 37
EP - 48
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
IS - 1-2
ER -