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Generalized method for calculation and prediction of vapour-liquid equilibria at high pressures

Journal Article:

Abstract

Following the approaches of K.C. Chao and J.D. Seader (see Gas Abstr. 18,24 (1962) Jan.) and B.I. Lee, J.H. Erbar, and W.C. Edmister (see Gas Abst. 29, 73-0331), the Czechoslovak Academy of Sciences developed a generalized method for prediction of vapor-liquid equilibria in hydrocarbon mixtures containing some nonhydrocarbon gases at high pressures. The method proposed is based on three equations: (1) a generalized equation of state for vapor-phase calculations; (2) a generalized expression for the pure-liquid fugacity coefficient; and (3) an activity coefficient expression based on a surface modification of the regular solution model. The equations used contain only one partially generalized binary parameter, which was evaluated from experimental K-value data. Researchers tested the proposed method by computing K-values and pressures in binary and multicomponent systems consisting of 13 hydrocarbons and 3 nonhydrocarbon gases. The results show that the method is applicable over a wide range of conditions with a degree of accuracy comparable with that of more complicated methods.
Publication Date:
Feb 01, 1978
Product Type:
Journal Article
Reference Number:
EDB-81-001840
Resource Relation:
Journal Name: Fluid Phase Equilibria; (Netherlands)
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; EQUILIBRIUM; GASES; BINARY MIXTURES; MIXTURES; HYDROCARBONS; CALCULATION METHODS; ACCURACY; CZECHOSLOVAKIA; FORECASTING; DEVELOPING COUNTRIES; DISPERSIONS; EASTERN EUROPE; EUROPE; FLUIDS; ORGANIC COMPOUNDS; 400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)
OSTI ID:
6927841
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: FPEQD
Submitting Site:
GSA
Size:
Pages: 173-184
Announcement Date:
Dec 01, 1980

Journal Article:

Citation Formats

Drahos, J, Wichterle, I, and Hala, E. Generalized method for calculation and prediction of vapour-liquid equilibria at high pressures. Netherlands: N. p., 1978. Web.
Drahos, J, Wichterle, I, & Hala, E. Generalized method for calculation and prediction of vapour-liquid equilibria at high pressures. Netherlands.
Drahos, J, Wichterle, I, and Hala, E. 1978. "Generalized method for calculation and prediction of vapour-liquid equilibria at high pressures." Netherlands.
@misc{etde_6927841,
title = {Generalized method for calculation and prediction of vapour-liquid equilibria at high pressures}
author = {Drahos, J, Wichterle, I, and Hala, E}
abstractNote = {Following the approaches of K.C. Chao and J.D. Seader (see Gas Abstr. 18,24 (1962) Jan.) and B.I. Lee, J.H. Erbar, and W.C. Edmister (see Gas Abst. 29, 73-0331), the Czechoslovak Academy of Sciences developed a generalized method for prediction of vapor-liquid equilibria in hydrocarbon mixtures containing some nonhydrocarbon gases at high pressures. The method proposed is based on three equations: (1) a generalized equation of state for vapor-phase calculations; (2) a generalized expression for the pure-liquid fugacity coefficient; and (3) an activity coefficient expression based on a surface modification of the regular solution model. The equations used contain only one partially generalized binary parameter, which was evaluated from experimental K-value data. Researchers tested the proposed method by computing K-values and pressures in binary and multicomponent systems consisting of 13 hydrocarbons and 3 nonhydrocarbon gases. The results show that the method is applicable over a wide range of conditions with a degree of accuracy comparable with that of more complicated methods.}
journal = {Fluid Phase Equilibria; (Netherlands)}
journal type = {AC}
place = {Netherlands}
year = {1978}
month = {Feb}
}