Determination of kinetics of CO2 absorption in unloaded and loaded DEEA+MAPA blend

Abstract

Alkanolamine blends are of high interest as solvents to enhance the CO2 capture technology in comparison to the traditional 5 M MEA. In the present work, the mass transfer and kinetics coefficients of the unloaded and loaded blend 3 M DEEA+ 2 M MAPA are measured from 30 to 70 °C in a Double Stirred Cell (DSC) under pseudo-first order conditions. Needed physical properties, as density, viscosity and Henry's Law constants of N2O are measured from 25 to 80 °C. Results are extracted using the zwitterion mechanism and two-film theory.