A simplified local composition mixing rule on the basis of the UNIFAC equation

Junhang Dong; Zhaohui Wang; Nanping Xu; Yanru Wang; Jun Shi

A simplified local composition mixing rule on the basis of the UNIFAC equation

Junhang Dong, Zhaohui Wang, Nanping Xu, Yanru Wang, Jun Shi

College of Chemical Engineering

Nanjing Tech University

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

Abstract

In this work,a simplified UNIFAC-based local compositi on mixing rule containing one or two adjustable parameters was proposed for the PRSV equation of state.The energy parameters λ_ji in the local composition expression were estimated by UNIFAC group contribution method and the local mole fraction was directly introduced into the EOS parameters a_m and b_m of mixture. High pressure vapor-liquid equilibria for 8 strongly non-ideal systems including polar-polar and nohpolar-polar binary systems were, arbitrarily selected for testing calculations. The results calculated by the proposed mixing rule are much better than those obtained by the conventional and HV mixing rules.

Original language	English
Pages (from-to)	X6-98
Journal	Petrochemical Technology
Volume	25
Issue number	2
State	Published - 1996

Keywords

Correlation
Equation of state
High pressure phase equilibrium
Mixing rule
UNIFAC

Cite this

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keywords = "Correlation, Equation of state, High pressure phase equilibrium, Mixing rule, UNIFAC",

author = "Junhang Dong and Zhaohui Wang and Nanping Xu and Yanru Wang and Jun Shi",

year = "1996",

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journal = "Petrochemical Technology",

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T1 - A simplified local composition mixing rule on the basis of the UNIFAC equation

AU - Dong, Junhang

AU - Wang, Zhaohui

AU - Xu, Nanping

AU - Wang, Yanru

AU - Shi, Jun

PY - 1996

Y1 - 1996

N2 - In this work,a simplified UNIFAC-based local compositi on mixing rule containing one or two adjustable parameters was proposed for the PRSV equation of state.The energy parameters λji in the local composition expression were estimated by UNIFAC group contribution method and the local mole fraction was directly introduced into the EOS parameters am and bm of mixture. High pressure vapor-liquid equilibria for 8 strongly non-ideal systems including polar-polar and nohpolar-polar binary systems were, arbitrarily selected for testing calculations. The results calculated by the proposed mixing rule are much better than those obtained by the conventional and HV mixing rules.

AB - In this work,a simplified UNIFAC-based local compositi on mixing rule containing one or two adjustable parameters was proposed for the PRSV equation of state.The energy parameters λji in the local composition expression were estimated by UNIFAC group contribution method and the local mole fraction was directly introduced into the EOS parameters am and bm of mixture. High pressure vapor-liquid equilibria for 8 strongly non-ideal systems including polar-polar and nohpolar-polar binary systems were, arbitrarily selected for testing calculations. The results calculated by the proposed mixing rule are much better than those obtained by the conventional and HV mixing rules.

KW - Correlation

KW - Equation of state

KW - High pressure phase equilibrium

KW - Mixing rule

KW - UNIFAC

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M3 - 文章

AN - SCOPUS:5944234857

SN - 1000-8144

VL - 25

SP - X6-98

JO - Petrochemical Technology

JF - Petrochemical Technology

IS - 2

ER -

A simplified local composition mixing rule on the basis of the UNIFAC equation

Abstract

Keywords

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