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

摘要

Alkanolamine blends are of high interest as solvents to enhance the CO2 capture technology in comparison to the traditional 5M 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.