A kinetic and process modeling study of CO 2 capture with MEA-promoted potassium carbonate solutions

H Thee; YA Suryaputradinata; KA Mumford; KH Smith; GD Silva; SE Kentish; GW Stevens

Journal article

A kinetic and process modeling study of CO 2 capture with MEA-promoted potassium carbonate solutions

H Thee, YA Suryaputradinata, KA Mumford, KH Smith, GD Silva, SE Kentish, GW Stevens

Chemical Engineering Journal | Published : 2012

DOI: 10.1016/j.cej.2012.08.092

Abstract

Aqueous solutions of carbonate salts such as potassium carbonate (K 2CO 3) have gained widespread acceptance as viable solvents for pre and post combustion capture of carbon dioxide (CO 2). However, due to poor reaction kinetics a rate promoter is considered essential to improve the rate of CO 2 absorption and hydration to bicarbonate. Using a well characterized wetted-wall column, we have evaluated the reaction kinetics of CO 2 absorption into a K 2CO 3 solution promoted with monoethanolamine (MEA) under conditions resembling those found at industrial CO 2 capture plants. Results presented here show that at 63°C the addition of MEA in small quantities, 1.1M (5wt.%) and 2.2M (10wt.%), accele..

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University of Melbourne Researchers

Kathryn Mumford Author

Kathryn Smith Author

Sandra Kentish Author

Geoff Stevens Author

Grants

Funding Acknowledgements

The authors acknowledge the financial support provided by the Australian Government through its Cooperative Research Centre program for this CO2CRC research project. Infrastructure support from the Particulate Fluids Processing Centre (PFPC), a special research centre of the Australian Research Council is also gratefully acknowledged.