Solubility of Carbon Dioxide in Secondary Butyl Alcohol at High Pressures: Experimental and Modeling with CPA.
Mixtures of carbon dioxide and secondary butyl alcohol at high pressures are interesting for a range of industrial applications. Therefore, it is important to have trustworthy experimental data on the high-pressure phase behavior of this mixture over a wide range of temperatures. In addition, an accurate thermodynamic model is necessary for the optimal design and operation of processes. In this study, bubble points of binary mixtures of CO2+ secondary butyl alcohol were measured using a synthetic method. Measurements covered a CO2molar concentration range of (0.10-0.57) % and temperatures from (293 to 370) K, with pressures reaching up to 11 MPa. The experimental data were modelled by the cubic plus association (CPA) equation of state (EoS), as well as the more simple Soave-Redlich-Kwong (SRK) EoS. Predictive and correlative modes were considered for both models. In the predictive mode, the CPA performs better than the SRK because it also considers associations.
School of Chemical and Petroleum Engineering, Shiraz University, Mollasadra Ave., 71345 Shiraz, Iran.
Sona
S
Raeissi
School of Chemical and Petroleum Engineering, Shiraz University, Mollasadra Ave., 71345 Shiraz, Iran.
Reza
R
Haghbakhsh
Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands.
Louw J
LJ
Florusse
Chemical Engineering Department, The Petroleum Institute, P.O. Box 2533, Abu Dhabi, United Arab Emirates ; Department of Chemical Engineering and Chemistry, Separation Technology Group, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands.
Cor J
CJ
Peters
2-Butanol; 2-Butyl alcohol; CO2; Cubic plus association; Phase behavior; Vapor–liquid equilibria