Analysis of the Regeneration of Monoethanolamine Aqueous Solutions by Microwave Irradiation

Francis Bougie, Xianfeng Fan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Even if numerous studies were published over the last decades about the CO2 capture process by aqueous amine solutions, only one paper was found so far in the literature concerning the use of microwave (MW) to regenerate the spent solutions. The present work was then performed to investigate the regeneration efficiency of MEA aqueous solutions by MW while testing various amine concentrations including the well-known 30 wt%. Stripped CO2 quantities were compared to the MW energy absorbed by the solution to find the optimal regeneration conditions. The heating rate of solutions by MW was found to be influenced by their heat capacity and viscosity, two parameters with opposing effects giving rise to a maximal heating rate around 50-60 wt% MEA. By performing absorption and regeneration cycles, the cyclic CO2 capacity of each solution was found and compared to the amount of MW energy absorbed by the solution during the stripping step. The lowest energy per mole of stripped CO2 ratio was found for the 50 wt% MEA solution which is 30 % lower than the value found for the benchmark 30 wt% MEA.
Original languageEnglish
Title of host publicationProceedings of the 9th International Conference on Applied Energy
PublisherElsevier
Pages3661-3666
Volume142
DOIs
Publication statusPublished - 31 Jan 2018
Event9th International Conference on Applied Energy -
Duration: 21 Aug 2017 → …

Publication series

NameEnergy Procedia
PublisherElsevier
Volume142
ISSN (Electronic)1876-6102

Conference

Conference9th International Conference on Applied Energy
Period21/08/17 → …

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