Abstract
This study evaluated the effects of two solid acid catalysts (γ-Al2O3 and HZSM-5), and two tertiary amines (methyldiethanolamine and 4-(diethylamine)-2-butanol mixed with monoethanolamine on the CO2 capture process performance in terms of heat duty, cyclic capacity and absorber efficiency using a bench scale amine-based post-combustion CO2 capture pilot plant with different amounts of each solid acid catalyst in the desorber. Comparisons were made between 5M MEA, 5M MEA/2M MDEA, and 5M MEA/1.25M DEAB with and without catalyst in the desorber. It was found that 5M MEA/1.25M DEAB with HZSM-5 gave the highest cyclic capacity, absorption efficiency and lowest heat duty.
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