Effect of Acid Catalysts on CO2 Absorption Process by Mixed Amines. (July 2017)

• Record Type: Journal Article
• Authors: Srisang, Wayuta; Osei, Priscilla Anima; Decardi-Nelson, Benjamin; Tontiwachwuthikul, Ananda Akachuku Paitoon; Idem, Raphael
• Is Part Of: Energy procedia. Volume 114(2017)
• Page Start: 1514
• Page End: 1522
• Publication Date: 2017-07
• Subjects: Amine absorption -- heat duty -- MEA -- MDEA -- DEAB -- Acid catalysts; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2017.03.1277
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: This study evaluated the effects of two solid acid catalysts (γ-Al2 O3 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 5 M MEA, 5 M MEA/2 M MDEA, and 5 M MEA/1.25 M DEAB with and without catalyst in the desorber. It was found that 5 M MEA/1.25 M DEAB with HZSM-5 gave the highest cyclic capacity, absorption efficiency and lowest heat duty.