CO_2 capture into aqueous solutions of the mixed solvent Cesar 1

摘要

In this work, experimental data and a simplified vapor-liquid equilibrium (VLE) model for the absorption of CO_2 into aqueous solutions of the mixed solvent Cesar 1 are reported. The effect of the base amine/promoter ratio and the total concentration level of amine were studied. The highest possible ratio of base amine/promoter which does not form solid precipitates during the absorption of CO_2 at 40 °C and high loadings (40 w% amine), was identified. Considering the maximum loading found in the screening tests for Cesar 1 and for 30 w% MEA systems, the Cesar 1 system has about 128 % higher specific cyclic capacity if operating between 40 and 80°C, and almost twice the CO_2 partial pressure at 120°C compared to MEA.