Modeling of corrosion of steel tubing in CO sub(2) storage

In this work, a mechanistic model was developed to predict the corrosion rate of steel tubing under carbon storage conditions. The model integrates a number of sub-models that quantify contributions of interrelated steps to the corrosion process. The water chemistry sub-model determines the solution...

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Bibliographic Details
Published in:Greenhouse gases: science and technology 2016-12, Vol.6 (6), p.797-811
Main Authors: Li, Qiang, Cheng, YFrank
Format: Article
Language:English
Online Access:Get full text
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Summary:In this work, a mechanistic model was developed to predict the corrosion rate of steel tubing under carbon storage conditions. The model integrates a number of sub-models that quantify contributions of interrelated steps to the corrosion process. The water chemistry sub-model determines the solution pH and the concentrations of species. The electrochemical corrosion sub-model assesses both charge-transfer and mass-transfer steps and their effects on corrosion. The scale formation and its role in corrosion are considered. The finite difference method is used to solve numerical equations, and a MetLab program was written for computation of the corrosion rate. The modeling results are validated by both laboratory testing and literature data. The parametric effects, including temperature, CO sub(2) partial pressure, solution salinity, pH, time, etc., on corrosion are predicted. The limitations of the model are also discussed. copyright 2016 Society of Chemical Industry and John Wiley & Sons, Ltd
ISSN:2152-3878
2152-3878
DOI:10.1002/ghg.1605