TY - JOUR
T1 - Application of predictive equations of state in calculating natural gas phase envelopes and critical points
AU - Farshchi Tabrizi, F.
AU - Nasrifar, Kh
PY - 2010/3
Y1 - 2010/3
N2 - The phase equilibria and critical points of natural gas mixtures are calculated from two predictive equations of state. One of the predictive equations of state is introduced in this work. This model takes the advantages of a pressure-volume-temperature relationship that accurately describes the supercritical fugacity of methane and a group contribution method that suitably estimates the binary interaction parameters per pair of natural gas constituents. As a result, this model accurately predicts the vapor-liquid equilibria of natural gas mixtures. It also satisfactorily predicts the critical points of natural gas mixtures. Comparisons with experimental data and the other predictive method are presented.
AB - The phase equilibria and critical points of natural gas mixtures are calculated from two predictive equations of state. One of the predictive equations of state is introduced in this work. This model takes the advantages of a pressure-volume-temperature relationship that accurately describes the supercritical fugacity of methane and a group contribution method that suitably estimates the binary interaction parameters per pair of natural gas constituents. As a result, this model accurately predicts the vapor-liquid equilibria of natural gas mixtures. It also satisfactorily predicts the critical points of natural gas mixtures. Comparisons with experimental data and the other predictive method are presented.
KW - Binary interaction parameter
KW - Critical point
KW - Equation of state
KW - Natural gas
KW - VLE
UR - http://www.scopus.com/inward/record.url?scp=77950337588&partnerID=8YFLogxK
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U2 - 10.1016/j.jngse.2009.12.005
DO - 10.1016/j.jngse.2009.12.005
M3 - Article
AN - SCOPUS:77950337588
SN - 1875-5100
VL - 2
SP - 21
EP - 28
JO - Journal of Natural Gas Science and Engineering
JF - Journal of Natural Gas Science and Engineering
IS - 1
ER -