Title
Understanding and modelling the effect of dissolved metals on solvent degradation in post combustion CO2 capture based on pilot plant experience
Author
Dhingra, S.
Khakharia, P.
Rieder, A.
Cousins, A.
Reynolds, A.
Knudsen, J.
Andersen, J.
Irons, R.
Mertens, J.
Zahra, M.A.
van Os, P.
Goetheer, E.L.V.
Publication year
2017
Abstract
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.
Subject
Solid & Fluid Mechanics
SPE - Sustainable Process and Energy Systems
TS - Technical Sciences
Environment
Auto-catalytic
Iron
Oxidative degradation
Pilot campaigns
Post-combustion carbon capture
Ammonia
Carbon capture
Catalysis
Combustion
Degradation
Ethanolamines
Kinetic parameters
Kinetic theory
Metals
Pilot plants
Solvents
Kinetic modeling
To reference this document use:
http://resolver.tudelft.nl/uuid:22499363-7ba9-4b15-8d4d-c731a563e95a
TNO identifier
782375
Publisher
MDPI AG
ISSN
1996-1073
Source
Energies, 10 (5)
Article number
629
Document type
article