Capture of CO2 from high humidity flue gas by vacuum swing adsorption with zeolite 13X

Abstract

Capture of CO2 from flue gas streams using adsorption processes must deal with the prospect of high humidity streams containing bulk CO 2 as well as other impurities such as SO x , NO x , etc. Most studies to date have ignored this aspect of CO 2 capture. In this study, we have experimentally examined the capture of CO2 from a 12% synthetic flue gas stream at a relative humidity of 95% at 30∈°C. A 13X adsorbent was used and the migration of the water and its subsequent impact on capture performance was evaluated. Binary breakthrough of CO2/water vapor was performed and indicated a significant effect of water on CO2 adsorption capacity, as expected. Cyclic experiments indicate that the water ..