The effect of CO2-loaded amine solvents on the corrosion of a carbon steel stripper
File(s)
Accepted version
Author(s)
Campbell, KLS
Zhao, Y
Hall, JJ
Williams, DR
Type
Journal Article
Abstract
The corrosive behaviour of loaded amine solvents was evaluated under stripper operating conditions, for post-combustion carbon capture, to determine the feasibility of using carbon steel in plant construction. In addition to monoethanolamine, three alternative amine solvents: methyldiethanolamine (MDEA), 2-amino-2-methyl-1-propanol (AMP), 1-(2-aminoethyl)piperazine (AEPZ), and the common additive K2CO3 were studied when in contact with carbon steel (C1018) over a 28-day period. Corrosive behaviour was evaluated using carbon steel coupons: gravimetric method for weight change, surface imaging (SEM) and analytical techniques (EDX and XRD), and Fe ion concentration in solution (ICP–OES). The results demonstrated that MDEA and AMP as well as K2CO3 develop a significant siderite (FeCO3) layer on the carbon steel surface. The presence of this layer is attributed to the preferred reaction pathway with CO2 for tertiary and sterically hindered amines. The FeCO3 layer formed in the case of MDEA provides superior protection from continued corrosion of the carbon steel. By contrast, MEA and AEPZ show significant corrosion to the carbon steel surface. In conclusion, MDEA, AMP, and K2CO3 can preferentially produce sufficient surface FeCO3 layers to reduce corrosion levels in carbon steels for use under stripper conditions in post-combustion carbon capture plants.
Date Issued
2016-04-01
Date Acceptance
2016-02-08
Citation
International Journal of Greenhouse Gas Control, 2016, 47 (1), pp.376-385
ISSN
1750-5836
Publisher
Elsevier
Start Page
376
End Page
385
Journal / Book Title
International Journal of Greenhouse Gas Control
Volume
47
Issue
1
Copyright Statement
© 2016 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Department of Energy & Climate Change
The Royal Society
Identifier
https://www.sciencedirect.com/science/article/pii/S1750583616300585
Grant Number
CENRE_P46465
DH150014
Subjects
Science & Technology
Technology
Green & Sustainable Science & Technology
Energy & Fuels
Engineering, Environmental
Science & Technology - Other Topics
Engineering
Post-combustion carbon capture
Amine
Corrosion
Carbon steel
UNDERSTANDING CORROSION
CAPTURE TECHNOLOGY
MILD-STEEL
BEHAVIOR
MEA
PLANTS
04 Earth Sciences
05 Environmental Sciences
09 Engineering
Energy
Publication Status
Published
Date Publish Online
2016-02-26