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, M. E.
N1 - Funding Information:
Acknowledgement-Financial support from the Exxon Research and Engineering Co. is gratefully acknowledged.
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
AN - SCOPUS:0024872161
SN - 0009-2509
VL - 44
SP - 1061
EP - 1069
JO - Chemical Engineering Science
JF - Chemical Engineering Science
IS - 5
ER -