Flow Dependence of Carbon Dioxide Corrosion Rates and the Interference of Trace Dissolved Oxygen

D John; B Kinsella; S Bailey; Roland De Marco

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Flow Dependence of Carbon Dioxide Corrosion Rates and the Interference of Trace Dissolved Oxygen

Conference paper

Peer reviewed

Flow Dependence of Carbon Dioxide Corrosion Rates and the Interference of Trace Dissolved Oxygen

D John, B Kinsella, S Bailey and Roland De Marco

Proceedings of the 2007 National Association of Corrosion Engineers Corrosion Conference, pp.1-13

National Association of Corrosion Engineers (NACE) Corrosion Conference, 2007 (Nashville, United States, 11-Mar-2007–15-Mar-2007)

N A C E International

2007

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Abstract

Physical Chemistry (incl. Structural)

carbon dioxide corrosion

dissolved oxygen

flow dependence

jet impingement

The rate of carbon dioxide corrosion is conventionally recognized to be independent of the flow velocity at ambient temperatures. However in the presence of trace levels of dissolved oxygen (greater than 15 ppb) it has been found that the rate of carbon dioxide corrosion can exhibit a strong flow dependence. Corrosion rates determined using the jet impingement technique illustrate a three fold increase in the corrosion rate in the presence of trace levels of dissolved oxygen (greater than15 ppb) at a Reynolds number of 61000. It is theorized that trace levels of dissolved oxygen affect the rate of hydration of carbon dioxide and may develop a surface which can facilitate the hydrogen evolution reaction. The practical implication of this interference can not be underestimated and is likely to be strongly associated with severe pitting and flow induced localized corrosion. Trace levels of dissolved oxygen are inevitably present in oil and gas process streams and most conventional laboratory testing of carbon dioxide corrosion.

Details

Title: Flow Dependence of Carbon Dioxide Corrosion Rates and the Interference of Trace Dissolved Oxygen
Authors: D John (Author) - Curtin University of Technology
B Kinsella (Author) - Curtin University of Technology
S Bailey (Author) - Curtin University of Technology
Roland De Marco (Author) - Curtin University of Technology
Publication details: Proceedings of the 2007 National Association of Corrosion Engineers Corrosion Conference, pp.1-13
Conference details: National Association of Corrosion Engineers (NACE) Corrosion Conference, 2007 (Nashville, United States, 11-Mar-2007–15-Mar-2007)
Publisher: N A C E International
Date published: 2007
Organisation Unit: University of the Sunshine Coast, Queensland; Office of the Deputy Vice-Chancellor (Research and Innovation)
Language: English
Record Identifier: 99449556902621
Output Type: Conference paper

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