Journal article
Monoethanolamine reclamation using electrodialysis
J Lim, A Aguiar, CA Scholes, LF Dumée, GW Stevens, SE Kentish
Industrial and Engineering Chemistry Research | Published : 2014
DOI: 10.1021/ie503506b
Abstract
Monoethanolamine (MEA) is the benchmark solvent for the capture of carbon dioxide from both natural gas and flue gas streams. Despite its effectiveness in absorbing CO2, this solvent can react with impurities in the gas stream to form heat stable salts and other degradation products. These impurities can cause problems such as an increase in solvent viscosity and corrosion of the operating units. Thus, a number of approaches have been considered to mitigate the occurrence of these problems. In this paper, the use of electrodialysis as an online MEA reclamation process in a postcombustion CO2 capture facility is investigated. The study shows that high heat stable salts removal can be achieved..
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Funding Acknowledgements
The authors acknowledge the financial support provided by the Australian Government through its Cooperative Research Centre program for this CO2CRC research project. The authors also acknowledge financial assistance provided through Australian National Low Emissions Coal Research Development (ANLEC R&D). ANLEC R&D is supported by Australian Coal Association Low Emission Technology Limited and the Australian Government through the Clean Energy Initiative. The authors also acknowledge useful discussions with Dr. George Chen during the drafting of the manuscript.