The experimental synthetic-based method is a straightforward procedure to obtain a complete resolution of the phase behaviour of VLE of binary mixtures; however, it has limited applicability for multicomponent mixtures/multiphase phenomena. The analytical method is an alternative that offers a reasonable solution for complex configurations, however, the investment of time and resources is high. A straightforward alternative presented in this work consists on the application of the synthetic method allied to a theoretical procedure in order to obtain the composition of the existent phases in equilibrium in complex system’s configurations. The case study is a CO2 + methanol + glycerol mixture that at concrete conditions of global composition, pressure and temperature leads to VLLLE. The composition of each phase in equilibrium was determined using the Peng-Robinson EOS with Mathias-Klotz-Prausnitz mixing rule allied to a combination algorithm to find and check the suitable arrangement of derived compositions that respect the thermodynamic criteria of equilibria, balance of masses and order of densities. A single solution was obtained and discussed along the manuscript.
|Title of host publication||Proceedings of the 12th International Symposium on Supercritical Fluids, ISSF 2018|
|Publisher||International Society for Advancement of Supercritical Fluids (ISASF)|
|Publication status||Published - 2018|
|Event||12th International Symposium on Supercritical Fluids, ISSF 2018 - Antibes Juan-les-Pins, France|
Duration: 22 Apr 2018 → 25 Apr 2018
|Conference||12th International Symposium on Supercritical Fluids, ISSF 2018|
|Period||22/04/18 → 25/04/18|
Carrera, G. V. D. S. M., & Nunes da Ponte, M. L. M. (2018). CO2 + Methanol + Glycerol: Determination of the Compositions in VLLLE From a Synthetic Method-Based Experiment/Theoretical Procedure. In Proceedings of the 12th International Symposium on Supercritical Fluids, ISSF 2018 [OT02] International Society for Advancement of Supercritical Fluids (ISASF).