VLE data and modelling of aqueous N,N-diethylethanolamine (DEEA) solutions
Monteiro, Juliana Garcia Moretz-Sohn; Pinto, Diego Di Domenico; Zaidy, Syed Amjad Hussain; Hartono, Ardi; Svendsen, Hallvard Fjøsne
Original version
International Journal of Greenhouse Gas Control 2013, 19(Nov):432-440 10.1016/j.ijggc.2013.10.001Abstract
This work focuses on N,N-diethylethanolamine (DEEA), a tertiary amine relevant in the phase-change solvents context. Vapour liquid equilibrium data for CO2 loaded aqueous solutions of DEEA are presented. These, along with data for pure DEEA and the binary system H2O-DEEA available in literature, are represented by a model correlating the activity coefficients with the electrolyte non-random two-liquid (eNRTL) model. The model is shown to represent the experimental data well. The equilibrium model allows for simulating the regeneration of the solvent, thereby providing a measurement for the energy demand of the process. Experimental heat of absorption data presented by Kim (2009) are used to validate the predictions of the model.