Phase behavior of sour natural gas systems using classical and statistical thermodynamic equations of states

Wael A. Fouad; Abdallah S. Berrouk

doi:10.1016/j.fluid.2013.07.029

Phase behavior of sour natural gas systems using classical and statistical thermodynamic equations of states

Wael A. Fouad^*
, Abdallah S. Berrouk

^*Corresponding author for this work

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

17 Scopus citations

Abstract

Vapor-liquid equilibrium (VLE) of natural gas systems containing light hydrocarbons, water, carbon dioxide (CO₂), hydrogen sulfide (H₂S), nitrogen (N₂), monoethylene glycol (MEG), triethylene glycol (TEG), benzene (C₆H₆), toluene (C₇H₈), methanol (CH₃OH) and ethanol (C₂H₅OH) are predicted in this work. A performance comparison between Peng-Robinson equation of state (PR EoS) and the perturbed chain form of the statistical associating fluid theory (PC-SAFT EoS) is made based on their predictability power in modeling such systems at different conditions. Data on saturated liquid densities and vapor pressures are used to optimize pure component PC-SAFT parameters for MEG and TEG. Experimental VLE data is used to fit both temperature dependent and independent binary interaction parameters (k_ij) in the PC-SAFT framework. Peng-Robinson EoS shows better results in predicting phase behavior of dry natural gas systems. However, PC-SAFT EoS exhibits superiority for systems containing water and/or methanol.

Original language	English
Pages (from-to)	136-145
Number of pages	10
Journal	Fluid Phase Equilibria
Volume	356
DOIs	https://doi.org/10.1016/j.fluid.2013.07.029
State	Published - 25 Oct 2013
Externally published	Yes

Bibliographical note

Funding Information:
The first author acknowledges Abu Dhabi National Oil Company (ADNOC) financial support through his PhD scholarship.

Keywords

Glycol
Natural gas
PC-SAFT EoS
Peng-Robinson EoS
VLE

ASJC Scopus subject areas

General Chemical Engineering
General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/j.fluid.2013.07.029

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@article{e6763166978946529a898440ef5f0420,

title = "Phase behavior of sour natural gas systems using classical and statistical thermodynamic equations of states",

abstract = "Vapor-liquid equilibrium (VLE) of natural gas systems containing light hydrocarbons, water, carbon dioxide (CO2), hydrogen sulfide (H2S), nitrogen (N2), monoethylene glycol (MEG), triethylene glycol (TEG), benzene (C6H6), toluene (C7H8), methanol (CH3OH) and ethanol (C2H5OH) are predicted in this work. A performance comparison between Peng-Robinson equation of state (PR EoS) and the perturbed chain form of the statistical associating fluid theory (PC-SAFT EoS) is made based on their predictability power in modeling such systems at different conditions. Data on saturated liquid densities and vapor pressures are used to optimize pure component PC-SAFT parameters for MEG and TEG. Experimental VLE data is used to fit both temperature dependent and independent binary interaction parameters (kij) in the PC-SAFT framework. Peng-Robinson EoS shows better results in predicting phase behavior of dry natural gas systems. However, PC-SAFT EoS exhibits superiority for systems containing water and/or methanol.",

keywords = "Glycol, Natural gas, PC-SAFT EoS, Peng-Robinson EoS, VLE",

author = "Fouad, \{Wael A.\} and Berrouk, \{Abdallah S.\}",

note = "Funding Information: The first author acknowledges Abu Dhabi National Oil Company (ADNOC) financial support through his PhD scholarship.",

year = "2013",

month = oct,

day = "25",

doi = "10.1016/j.fluid.2013.07.029",

language = "English",

volume = "356",

pages = "136--145",

journal = "Fluid Phase Equilibria",

issn = "0378-3812",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Phase behavior of sour natural gas systems using classical and statistical thermodynamic equations of states

AU - Fouad, Wael A.

AU - Berrouk, Abdallah S.

N1 - Funding Information: The first author acknowledges Abu Dhabi National Oil Company (ADNOC) financial support through his PhD scholarship.

PY - 2013/10/25

Y1 - 2013/10/25

N2 - Vapor-liquid equilibrium (VLE) of natural gas systems containing light hydrocarbons, water, carbon dioxide (CO2), hydrogen sulfide (H2S), nitrogen (N2), monoethylene glycol (MEG), triethylene glycol (TEG), benzene (C6H6), toluene (C7H8), methanol (CH3OH) and ethanol (C2H5OH) are predicted in this work. A performance comparison between Peng-Robinson equation of state (PR EoS) and the perturbed chain form of the statistical associating fluid theory (PC-SAFT EoS) is made based on their predictability power in modeling such systems at different conditions. Data on saturated liquid densities and vapor pressures are used to optimize pure component PC-SAFT parameters for MEG and TEG. Experimental VLE data is used to fit both temperature dependent and independent binary interaction parameters (kij) in the PC-SAFT framework. Peng-Robinson EoS shows better results in predicting phase behavior of dry natural gas systems. However, PC-SAFT EoS exhibits superiority for systems containing water and/or methanol.

AB - Vapor-liquid equilibrium (VLE) of natural gas systems containing light hydrocarbons, water, carbon dioxide (CO2), hydrogen sulfide (H2S), nitrogen (N2), monoethylene glycol (MEG), triethylene glycol (TEG), benzene (C6H6), toluene (C7H8), methanol (CH3OH) and ethanol (C2H5OH) are predicted in this work. A performance comparison between Peng-Robinson equation of state (PR EoS) and the perturbed chain form of the statistical associating fluid theory (PC-SAFT EoS) is made based on their predictability power in modeling such systems at different conditions. Data on saturated liquid densities and vapor pressures are used to optimize pure component PC-SAFT parameters for MEG and TEG. Experimental VLE data is used to fit both temperature dependent and independent binary interaction parameters (kij) in the PC-SAFT framework. Peng-Robinson EoS shows better results in predicting phase behavior of dry natural gas systems. However, PC-SAFT EoS exhibits superiority for systems containing water and/or methanol.

KW - Glycol

KW - Natural gas

KW - PC-SAFT EoS

KW - Peng-Robinson EoS

KW - VLE

UR - https://www.scopus.com/pages/publications/84881523775

U2 - 10.1016/j.fluid.2013.07.029

DO - 10.1016/j.fluid.2013.07.029

M3 - Article

AN - SCOPUS:84881523775

SN - 0378-3812

VL - 356

SP - 136

EP - 145

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

ER -

Phase behavior of sour natural gas systems using classical and statistical thermodynamic equations of states

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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