Corrosion behavior of highly alloyed steels in artificial saline aquifer fluids containing carbon dioxide
- C02-corrosion on piping steels might cause problems during injection of flue gases for their storage in deep geological aquifer fluids. Therefore, the selection of appropriate piping steels is a key factor to increase safety and reliability of the Carbon Capture and Storage (CCS) technology, and to keep the process cost-efficient. Within the project COORAL (German acronym for “C02 purity for capture and storage”) corrosion studies on injection piping steels exposed to C02 and artificial brine with high Chloride concentration have been carried out. Corrosion of the injection pipe in C02-rich aquifer fluid may occur within the aquifer brine or when at injection interruptions the aquifer fluid may flow back into the injection pipe. Because of high salinity of aquifer brine and C02-corrosion an appropriate material ranking of injection piping steels should be made. Corrosion resistance of steels 1.4034, 1.4021, 1.4542, 1.4162 and 1.4562 was investigated in a corrosive environment usingC02-corrosion on piping steels might cause problems during injection of flue gases for their storage in deep geological aquifer fluids. Therefore, the selection of appropriate piping steels is a key factor to increase safety and reliability of the Carbon Capture and Storage (CCS) technology, and to keep the process cost-efficient. Within the project COORAL (German acronym for “C02 purity for capture and storage”) corrosion studies on injection piping steels exposed to C02 and artificial brine with high Chloride concentration have been carried out. Corrosion of the injection pipe in C02-rich aquifer fluid may occur within the aquifer brine or when at injection interruptions the aquifer fluid may flow back into the injection pipe. Because of high salinity of aquifer brine and C02-corrosion an appropriate material ranking of injection piping steels should be made. Corrosion resistance of steels 1.4034, 1.4021, 1.4542, 1.4162 and 1.4562 was investigated in a corrosive environment using electrochemical and metallographic techniques. Electrochemical experiments in order to investigate the surface corrosion kinetics and polarization measurements in order to investigate localized corrosion phenomena have been carried out. Critical pitting potentials and repassivation potentials were determined by polarization curves of investigated materials and compared with measured corrosion potentials. Measured values were used in order to determine the suitability and performance of tested steels in C02-injection conditions.…
Autor*innen: | Ralph BäßlerORCiD, Oleksandra Yevtushenko, I. Carillo Salgado |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Graue Literatur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Latincorr 2014 - IX Latin American congress of corrosion (Proceedings) |
Jahr der Erstveröffentlichung: | 2014 |
Herausgeber (Institution): | NACE International |
Erste Seite: | Paper 2445981, 1 |
Letzte Seite: | 5 |
Freie Schlagwörter: | Carbon dioxide; Highly alloyed steels; Pitting corrosion |
Veranstaltung: | Latincorr 2014 - IX Latin American congress of corrosion |
Veranstaltungsort: | Medellín, Colombia |
Beginndatum der Veranstaltung: | 28.10.2014 |
Enddatum der Veranstaltung: | 31.10.2014 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 12.03.2015 |