Multiphase behavior in ternary fluid mixtures

a case study of the isopropanol-water-CO2 system at elevated pressures

J. R. Diandreth, Michael Paulaitis

Research output: Contribution to journalArticle

Abstract

Phase behavior involving three and four fluid phases is predicted for ternary mixtures of isopropanol, water and CO2 at temperatures and pressures near the critical point of CO2. These predictions are based on the Peng-Robinson equation of state and selected experimental measurements of phase compositions for the L1L2G, L1L2L3 and L1L2L3G equilibria for the ternary mixture. The calculated results show that this equation of state can describe several unique features of the phase diagram. These features include tricritical points, secondary critical endpoints, and a four-phase L1L2L3G equilibrium. Although quantitative agreement with measured phase compositions was not obtained, the Peng-Robinson equation did predict all the regions of multiple equilibrium phases that were observed in the experiments including those regions not used to obtain the equation-of-state parameters.

Original languageEnglish (US)
Pages (from-to)1061-1069
Number of pages9
JournalChemical Engineering Science
Volume44
Issue number5
DOIs
StatePublished - 1989
Externally publishedYes

Fingerprint

2-Propanol
Equations of state
Phase composition
Phase equilibria
Fluids
Water
Phase behavior
Phase diagrams
Experiments
Temperature

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Multiphase behavior in ternary fluid mixtures : a case study of the isopropanol-water-CO2 system at elevated pressures. / Diandreth, J. R.; Paulaitis, Michael.

In: Chemical Engineering Science, Vol. 44, No. 5, 1989, p. 1061-1069.

Research output: Contribution to journalArticle

@article{9733e6846454460fb683cf2281c35b36,
title = "Multiphase behavior in ternary fluid mixtures: a case study of the isopropanol-water-CO2 system at elevated pressures",
abstract = "Phase behavior involving three and four fluid phases is predicted for ternary mixtures of isopropanol, water and CO2 at temperatures and pressures near the critical point of CO2. These predictions are based on the Peng-Robinson equation of state and selected experimental measurements of phase compositions for the L1L2G, L1L2L3 and L1L2L3G equilibria for the ternary mixture. The calculated results show that this equation of state can describe several unique features of the phase diagram. These features include tricritical points, secondary critical endpoints, and a four-phase L1L2L3G equilibrium. Although quantitative agreement with measured phase compositions was not obtained, the Peng-Robinson equation did predict all the regions of multiple equilibrium phases that were observed in the experiments including those regions not used to obtain the equation-of-state parameters.",
author = "Diandreth, {J. R.} and Michael Paulaitis",
year = "1989",
doi = "10.1016/0009-2509(89)87005-8",
language = "English (US)",
volume = "44",
pages = "1061--1069",
journal = "Chemical Engineering Science",
issn = "0009-2509",
publisher = "Elsevier BV",
number = "5",

}

TY - JOUR

T1 - Multiphase behavior in ternary fluid mixtures

T2 - a case study of the isopropanol-water-CO2 system at elevated pressures

AU - Diandreth, J. R.

AU - Paulaitis, Michael

PY - 1989

Y1 - 1989

N2 - Phase behavior involving three and four fluid phases is predicted for ternary mixtures of isopropanol, water and CO2 at temperatures and pressures near the critical point of CO2. These predictions are based on the Peng-Robinson equation of state and selected experimental measurements of phase compositions for the L1L2G, L1L2L3 and L1L2L3G equilibria for the ternary mixture. The calculated results show that this equation of state can describe several unique features of the phase diagram. These features include tricritical points, secondary critical endpoints, and a four-phase L1L2L3G equilibrium. Although quantitative agreement with measured phase compositions was not obtained, the Peng-Robinson equation did predict all the regions of multiple equilibrium phases that were observed in the experiments including those regions not used to obtain the equation-of-state parameters.

AB - Phase behavior involving three and four fluid phases is predicted for ternary mixtures of isopropanol, water and CO2 at temperatures and pressures near the critical point of CO2. These predictions are based on the Peng-Robinson equation of state and selected experimental measurements of phase compositions for the L1L2G, L1L2L3 and L1L2L3G equilibria for the ternary mixture. The calculated results show that this equation of state can describe several unique features of the phase diagram. These features include tricritical points, secondary critical endpoints, and a four-phase L1L2L3G equilibrium. Although quantitative agreement with measured phase compositions was not obtained, the Peng-Robinson equation did predict all the regions of multiple equilibrium phases that were observed in the experiments including those regions not used to obtain the equation-of-state parameters.

UR - http://www.scopus.com/inward/record.url?scp=0024872161&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024872161&partnerID=8YFLogxK

U2 - 10.1016/0009-2509(89)87005-8

DO - 10.1016/0009-2509(89)87005-8

M3 - Article

VL - 44

SP - 1061

EP - 1069

JO - Chemical Engineering Science

JF - Chemical Engineering Science

SN - 0009-2509

IS - 5

ER -