Modeling the phase equilibria of the HIx mixture using the SAFT-VRE equation of state: Binary systems

P. Paricaud; L. Tazi; J. M. Borgard

doi:10.1016/j.ijhydene.2009.11.025

Modeling the phase equilibria of the HIx mixture using the SAFT-VRE equation of state: Binary systems

P. Paricaud
, L. Tazi
, J. M. Borgard

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

Abstract

The design and optimization of the separation units of the sulfur-iodine (SI) cycle process for hydrogen production requires a comprehensive analysis of the phase behavior of complex electrolyte solutions. Here, we apply the SAFT-VRE equation of state for electrolyte solutions to represent the phase equilibria of the HIx mixture (HI + H₂O + I₂) encountered in the reactive distillation column of the SI process. The phase equilibria of the binary mixtures (I₂ + H₂O, HI + I₂ and H₂O + HI) are accurately represented with the SAFT-VRE model. One key advantage of the SAFT-VRE model is the possibility to predict phase equilibria at high pressures and the densities of the coexistent phases, as well as the mean activity and osmotic coefficients of HI.

Original language	English
Pages (from-to)	978-991
Number of pages	14
Journal	International Journal of Hydrogen Energy
Volume	35
Issue number	3
DOIs	https://doi.org/10.1016/j.ijhydene.2009.11.025
Publication status	Published - 1 Feb 2010
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Electrolyte solutions
Hydrogen iodide
Hydrogen production
Iodine
SAFT equation of state
Thermochemical cycle

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10.1016/j.ijhydene.2009.11.025

Cite this

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title = "Modeling the phase equilibria of the HIx mixture using the SAFT-VRE equation of state: Binary systems",

abstract = "The design and optimization of the separation units of the sulfur-iodine (SI) cycle process for hydrogen production requires a comprehensive analysis of the phase behavior of complex electrolyte solutions. Here, we apply the SAFT-VRE equation of state for electrolyte solutions to represent the phase equilibria of the HIx mixture (HI + H2O + I2) encountered in the reactive distillation column of the SI process. The phase equilibria of the binary mixtures (I2 + H2O, HI + I2 and H2O + HI) are accurately represented with the SAFT-VRE model. One key advantage of the SAFT-VRE model is the possibility to predict phase equilibria at high pressures and the densities of the coexistent phases, as well as the mean activity and osmotic coefficients of HI.",

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TY - JOUR

T1 - Modeling the phase equilibria of the HIx mixture using the SAFT-VRE equation of state

T2 - Binary systems

AU - Paricaud, P.

AU - Tazi, L.

AU - Borgard, J. M.

PY - 2010/2/1

Y1 - 2010/2/1

N2 - The design and optimization of the separation units of the sulfur-iodine (SI) cycle process for hydrogen production requires a comprehensive analysis of the phase behavior of complex electrolyte solutions. Here, we apply the SAFT-VRE equation of state for electrolyte solutions to represent the phase equilibria of the HIx mixture (HI + H2O + I2) encountered in the reactive distillation column of the SI process. The phase equilibria of the binary mixtures (I2 + H2O, HI + I2 and H2O + HI) are accurately represented with the SAFT-VRE model. One key advantage of the SAFT-VRE model is the possibility to predict phase equilibria at high pressures and the densities of the coexistent phases, as well as the mean activity and osmotic coefficients of HI.

AB - The design and optimization of the separation units of the sulfur-iodine (SI) cycle process for hydrogen production requires a comprehensive analysis of the phase behavior of complex electrolyte solutions. Here, we apply the SAFT-VRE equation of state for electrolyte solutions to represent the phase equilibria of the HIx mixture (HI + H2O + I2) encountered in the reactive distillation column of the SI process. The phase equilibria of the binary mixtures (I2 + H2O, HI + I2 and H2O + HI) are accurately represented with the SAFT-VRE model. One key advantage of the SAFT-VRE model is the possibility to predict phase equilibria at high pressures and the densities of the coexistent phases, as well as the mean activity and osmotic coefficients of HI.

KW - Electrolyte solutions

KW - Hydrogen iodide

KW - Hydrogen production

KW - Iodine

KW - SAFT equation of state

KW - Thermochemical cycle

UR - https://www.scopus.com/pages/publications/74849120781

U2 - 10.1016/j.ijhydene.2009.11.025

DO - 10.1016/j.ijhydene.2009.11.025

M3 - Article

AN - SCOPUS:74849120781

SN - 0360-3199

VL - 35

SP - 978

EP - 991

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 3

ER -

Modeling the phase equilibria of the HIx mixture using the SAFT-VRE equation of state: Binary systems

Abstract

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Keywords

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