Vapor-liquid equilibria of LNG and gas condensate mixtures by the Nasrifar-Moshfeghian equation of state

Kh Nasrifar; M. Moshfeghian

doi:10.1016/S0378-3812(02)00028-6

Vapor-liquid equilibria of LNG and gas condensate mixtures by the Nasrifar-Moshfeghian equation of state

Kh Nasrifar, M. Moshfeghian^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Citations (SciVal)

Abstract

The Nasrifar-Moshfeghian (NM) equation of state (EOS) is used to predict vapor-liquid equilibria (VLE) of multi-component mixtures. The systems under study consist of liquefied natural gases (LNG), gas condensates, an asymmetric system, slightly polar systems and gas/water systems. van der Waals mixing rules are used and no pure component parameter is adjusted; however, the predictions compare well with experimental data, in particular, the solubility of CO₂, H₂S, CO and some hydrocarbon gases in water are calculated quite accurately. The average absolute error was found to be 7% for calculating gas solubility in water. For some systems, the volumetric properties were also predicted. The saturated liquid density of LNG systems is predicted with an average absolute error less than 0.6%.

Original language	English
Pages (from-to)	203-216
Number of pages	14
Journal	Fluid Phase Equilibria
Volume	200
Issue number	1
DOIs	https://doi.org/10.1016/S0378-3812(02)00028-6
Publication status	Published - Jul 15 2002
Externally published	Yes

Keywords

Equation of state
Gas solubility
Liquid density
Mixture

ASJC Scopus subject areas

Chemical Engineering(all)
Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1016/S0378-3812(02)00028-6

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abstract = "The Nasrifar-Moshfeghian (NM) equation of state (EOS) is used to predict vapor-liquid equilibria (VLE) of multi-component mixtures. The systems under study consist of liquefied natural gases (LNG), gas condensates, an asymmetric system, slightly polar systems and gas/water systems. van der Waals mixing rules are used and no pure component parameter is adjusted; however, the predictions compare well with experimental data, in particular, the solubility of CO2, H2S, CO and some hydrocarbon gases in water are calculated quite accurately. The average absolute error was found to be 7% for calculating gas solubility in water. For some systems, the volumetric properties were also predicted. The saturated liquid density of LNG systems is predicted with an average absolute error less than 0.6%.",

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AU - Nasrifar, Kh

AU - Moshfeghian, M.

PY - 2002/7/15

Y1 - 2002/7/15

N2 - The Nasrifar-Moshfeghian (NM) equation of state (EOS) is used to predict vapor-liquid equilibria (VLE) of multi-component mixtures. The systems under study consist of liquefied natural gases (LNG), gas condensates, an asymmetric system, slightly polar systems and gas/water systems. van der Waals mixing rules are used and no pure component parameter is adjusted; however, the predictions compare well with experimental data, in particular, the solubility of CO2, H2S, CO and some hydrocarbon gases in water are calculated quite accurately. The average absolute error was found to be 7% for calculating gas solubility in water. For some systems, the volumetric properties were also predicted. The saturated liquid density of LNG systems is predicted with an average absolute error less than 0.6%.

AB - The Nasrifar-Moshfeghian (NM) equation of state (EOS) is used to predict vapor-liquid equilibria (VLE) of multi-component mixtures. The systems under study consist of liquefied natural gases (LNG), gas condensates, an asymmetric system, slightly polar systems and gas/water systems. van der Waals mixing rules are used and no pure component parameter is adjusted; however, the predictions compare well with experimental data, in particular, the solubility of CO2, H2S, CO and some hydrocarbon gases in water are calculated quite accurately. The average absolute error was found to be 7% for calculating gas solubility in water. For some systems, the volumetric properties were also predicted. The saturated liquid density of LNG systems is predicted with an average absolute error less than 0.6%.

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KW - Liquid density

KW - Mixture

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Vapor-liquid equilibria of LNG and gas condensate mixtures by the Nasrifar-Moshfeghian equation of state

Abstract

Keywords

ASJC Scopus subject areas

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