Thermodynamic modeling of hydrogen sulfide absorption by aqueous N-methyldiethanolamine using the Extended UNIQUAC model

Negar Sadegh; Erling Halfdan Stenby; Kaj Thomsen

doi:10.1016/j.fluid.2015.01.024

Thermodynamic modeling of hydrogen sulfide absorption by aqueous N-methyldiethanolamine using the Extended UNIQUAC model

Negar Sadegh, Erling Halfdan Stenby, Kaj Thomsen

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Aqueous MDEA is the most commonly used solvent for H2S removal from natural gas. A reliable thermodynamic model is required for the proper design of natural gas sweetening processes. In this study, a rigorous thermodynamic model is developed to represent properties of the H2S-MDEA-H2O ternary system. The Extended UNIQUAC model is used to represent the system behavior. The model is created based on models for the constituent binary subsystems. The developed model provides accurate representation of VLE and heat of absorption for the studied system and subsystem in the temperature range of 0-180°C, H2S partial pressure of 0.0033-8329.71kPa, MDEA mass% of 0-50 and loading range of 0-2.17.

Original language	English
Journal	Fluid Phase Equilibria
Volume	392
Pages (from-to)	24-32
Number of pages	9
ISSN	0378-3812
DOIs	https://doi.org/10.1016/j.fluid.2015.01.024
Publication status	Published - 2015

Keywords

Extended UNIQUAC
H2S
MDEA
Modeling
Natural gas
Thermodynamic

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@article{82a908292fec443da98e4cb1653acf9b,

title = "Thermodynamic modeling of hydrogen sulfide absorption by aqueous N-methyldiethanolamine using the Extended UNIQUAC model",

abstract = "Aqueous MDEA is the most commonly used solvent for H2S removal from natural gas. A reliable thermodynamic model is required for the proper design of natural gas sweetening processes. In this study, a rigorous thermodynamic model is developed to represent properties of the H2S-MDEA-H2O ternary system. The Extended UNIQUAC model is used to represent the system behavior. The model is created based on models for the constituent binary subsystems. The developed model provides accurate representation of VLE and heat of absorption for the studied system and subsystem in the temperature range of 0-180°C, H2S partial pressure of 0.0033-8329.71kPa, MDEA mass\% of 0-50 and loading range of 0-2.17.",

keywords = "Extended UNIQUAC, H2S, MDEA, Modeling, Natural gas, Thermodynamic",

author = "Negar Sadegh and Stenby, \{Erling Halfdan\} and Kaj Thomsen",

year = "2015",

doi = "10.1016/j.fluid.2015.01.024",

language = "English",

volume = "392",

pages = "24--32",

journal = "Fluid Phase Equilibria",

issn = "0378-3812",

publisher = "Elsevier",

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T1 - Thermodynamic modeling of hydrogen sulfide absorption by aqueous N-methyldiethanolamine using the Extended UNIQUAC model

AU - Sadegh, Negar

AU - Stenby, Erling Halfdan

AU - Thomsen, Kaj

PY - 2015

Y1 - 2015

N2 - Aqueous MDEA is the most commonly used solvent for H2S removal from natural gas. A reliable thermodynamic model is required for the proper design of natural gas sweetening processes. In this study, a rigorous thermodynamic model is developed to represent properties of the H2S-MDEA-H2O ternary system. The Extended UNIQUAC model is used to represent the system behavior. The model is created based on models for the constituent binary subsystems. The developed model provides accurate representation of VLE and heat of absorption for the studied system and subsystem in the temperature range of 0-180°C, H2S partial pressure of 0.0033-8329.71kPa, MDEA mass% of 0-50 and loading range of 0-2.17.

AB - Aqueous MDEA is the most commonly used solvent for H2S removal from natural gas. A reliable thermodynamic model is required for the proper design of natural gas sweetening processes. In this study, a rigorous thermodynamic model is developed to represent properties of the H2S-MDEA-H2O ternary system. The Extended UNIQUAC model is used to represent the system behavior. The model is created based on models for the constituent binary subsystems. The developed model provides accurate representation of VLE and heat of absorption for the studied system and subsystem in the temperature range of 0-180°C, H2S partial pressure of 0.0033-8329.71kPa, MDEA mass% of 0-50 and loading range of 0-2.17.

KW - Extended UNIQUAC

KW - H2S

KW - MDEA

KW - Modeling

KW - Natural gas

KW - Thermodynamic

U2 - 10.1016/j.fluid.2015.01.024

DO - 10.1016/j.fluid.2015.01.024

M3 - Journal article

SN - 0378-3812

VL - 392

SP - 24

EP - 32

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

ER -

Thermodynamic modeling of hydrogen sulfide absorption by aqueous N-methyldiethanolamine using the Extended UNIQUAC model

Abstract

Keywords

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