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Energies 2017, 10(5), 629; doi:10.3390/en10050629

Understanding and Modelling the Effect of Dissolved Metals on Solvent Degradation in Post Combustion CO2 Capture Based on Pilot Plant Experience

Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek (TNO), Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
Energie Baden-Württemberg AG (EnBW), Schlemenwasentrasse 15, 70567 Stuttgart, Germany
Commonwealth Scientific and Industrial Research Organisation (CSIRO), 10 Murray Dwyer Circuit, Mayfield West, NSW 2304, Australia
Carbon Technology Research Center, School of Applied and Biomedical Sciences, Faculty of Science and Technology, Federation University, Switchback Rd, Churchill, VIC 3842, Australia
Aker Solutions AS, Snarøyveien 20, 1360 Fornebu, Norway
DONG Energy A/S, Esbjergværket, Amerikavej 7, DK-6700 Esbjerg, Denmark
Uniper, Technology Centre, Ratcliffe on Soar, Nottingham NG11 0EE, UK
Engie, Research and Technologies, Simon Bolivardlaan 34, 1000 Brussels, Belgium
Department of Chemical and Environmental Engineering, Masdar Institute of Science and Technology, 54224 Abu Dhabi, UAE
Author to whom correspondence should be addressed.
Academic Editor: Fernando Rubiera González
Received: 16 February 2017 / Revised: 24 April 2017 / Accepted: 26 April 2017 / Published: 4 May 2017
(This article belongs to the Special Issue CO2 Capture)
View Full-Text   |   Download PDF [3662 KB, uploaded 4 May 2017]   |  


Oxidative degradation is a serious concern for upscaling of amine-based carbon capture technology. Different kinetic models have been proposed based on laboratory experiments, however the kinetic parameters included are limited to those relevant for a lab-scale system and not a capture plant. Besides, most of the models fail to recognize the catalytic effect of metals. The objective of this work is to develop a representative kinetic model based on an apparent auto-catalytic reaction mechanism between solvent degradation, corrosion and ammonia emissions. Measurements from four different pilot plants: (i) EnBW’s plant at Heilbronn, Germany (ii) TNO’s plant at Maasvlakte, The Netherlands; (iii) CSIRO’s plants at Loy Yang and Tarong, Australia and (iv) DONG Energy’s plant at Esbjerg, Denmark are utilized to propose a degradation kinetic model for 30 wt % ethanolamine (MEA) as the capture solvent. The kinetic parameters of the model were regressed based on the pilot plant campaign at EnBW. The kinetic model was validated by comparing it with the measurements at the remaining pilot campaigns. The model predicted the trends of ammonia emissions and metal concentration within the same order of magnitude. This study provides a methodology to establish a quantitative approach for predicting the onset of unacceptable degradation levels which can be further used to devise counter-measure strategies such as reclaiming and metal removal. View Full-Text
Keywords: post combustion carbon capture; oxidative degradation; auto-catalytic; iron; kinetic model; pilot campaigns post combustion carbon capture; oxidative degradation; auto-catalytic; iron; kinetic model; pilot campaigns

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Dhingra, S.; Khakharia, P.; Rieder, A.; Cousins, A.; Reynolds, A.; Knudsen, J.; Andersen, J.; Irons, R.; Mertens, J.; Abu Zahra, M.; Van Os, P.; Goetheer, E. Understanding and Modelling the Effect of Dissolved Metals on Solvent Degradation in Post Combustion CO2 Capture Based on Pilot Plant Experience. Energies 2017, 10, 629.

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