Vapor-liquid equilibrium data were obtained for CO2-n-heptane, CO2-n-decane, CO2-trans-decalin, CO2-tetralin, CO2-quinoline, benzene-tetralin and benzene-quinoline systems in the temperature range from 340 to 710 K at several pressures up to 25 MPa. A flow-type apparatus was developed and used for vapor-liquid equilibrium measurements in order to reduce the residence time of heat sensitive substances at high temperatures. The operation of the present apparatus was easy and improved by employing an overflow type self-control system equipped with a back pressure regulator. The reliability of this experimental apparatus and procedure was proven since the vapor-liquid equilibrium data for the CO2-n-heptane system were in good agreement with literature data and the vapor and liquid phase compositions were independent of the sample flow rate within the range of flow rate employed. Measured data were correlated using equations of state and mixing rules based on the corresponding state principle.
ASJC Scopus subject areas
- Chemical Engineering(all)
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry