Corrosion in CO2 transport pipeline: Formation of corrosive phases in dense phase CO2
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- Kjemisk institutt [1539]
Abstract
Carbon capture and storage is suggested as one of the solutions to reduce CO2 emissions. Material choice is an important part for the total cost of the transport system for CO2. The present work comprises investigations of corrosive situations which could occur during transport of CO2 for injection to reservoirs. As CO2 with various combinations and concentrations of impurities were tested in a systematic manner, it was clear that combinations from established CO2 transport recommendations resulted in formation of a separate aqueous phase that contained high concentrations of sulfuric and nitric acid. However, many new impurity combinations were basically inert and could be considered safe to transport in carbon steel pipelines. Altogether, the present work has identified many important aspects of corrosion and chemical reactions for CO2 transport. This results in a better understanding of the processes that leads to corrosion and is needed for the making of a CO2 specification which ensure the integrity of pipelines or ships.List of papers
Paper 1 (Chapter 3): B. H. Morland and A. Dugstad, “Corrosion of carbon steel in water equilibrated with liquid and supercritical CO2”. CORROSION/2016, paper no. 7740 (Houston, TX: NACE International, 2016). The article is not available in DUO due to publisher restrictions. (The published version is available at store.nace.org) |
Paper 2 (Chapter 4): B. H. Morland, A. Dugstad, and G. Svenningsen, “Corrosion of carbon steel in dense phase CO2 with water above and below the solubility limit”. Energy Procedia, vol. 114, Supplement C (2017) pp. 6752-6765. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.egypro.2017.03.1807 |
Paper 3 (Chapter 5): B. H. Morland, M. Tjelta, A. Dugstad, and G. Svenningsen, “Corrosion in CO2 systems with impurities creating strong acids”. Accepted for publication in CORROSION journal (accepted 17th August 2019). The article is not available in DUO due to publisher restrictions. The published version is available at: https://doi.org/10.5006/3110 |
Paper 4 (Chapter 6): B. H. Morland, A. Tadesse, G. Svenningsen, R. D. Springer, and A. Anderko, “Nitric and sulfuric acid solubility in dense phase CO2”. Accepted for publication in Industrial & Engineering Chemistry Research (accepted 19th November 2019). The article is not available in DUO due to publisher restrictions. The published version is available at: https://doi.org/10.1021/acs.iecr.9b04957 |
Paper 5 (Chapter 7): B. H. Morland, T. Nordby, M. Tjelta, and G. Svenningsen, “Effect of SO2, O2, NO2, and H2O concentrations on chemical reactions and corrosion of carbon steel in dense phase CO2”. Paper accepted for publication in CORROSION journal (accepted 17th August 2019). The article is not available in DUO due to publisher restrictions. The published version is available at: https://doi.org/10.5006/3111 |
Paper 6 (Chapter 8): B. H. Morland, M. Tjelta, T. Nordby, and G. Svenningsen, “Acid reactions in hub systems consisting of separate non-reactive CO2 transport lines”. Journal of Greenhouse Gas Control, vol. 87 (2019), pp. 246-255. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.ijggc.2019.05.017 |