Suitability of alloyed steels in highly acidic geothermal environments
- This study aims to evaluate which of the materials currently available on the market could overcome the Problem of corrosion and withstand highly aggressive conditions in the exploitation of geothermal resources in volcanic environments. Our investigations were triggered by the conditions on Lahendong geothermal field (North Sulawesi, Indonesia): well LHD-23 presents one of the greatest challenges due to its capacity of producing > 20 MWe of energy from a single well and in the same time having very low pH (2-3) and relatively high Chloride (1,500 mg/L) and sulphate (1,600 mg/L) concentration. Three different Steel grades (low-alloyed Steel UNS G41300, stainless Steel UNS S31603 and high-alloyed stainless Steel UNS N08031) were selected, and their corrosion behavior was evaluated by means of short-term electrochemical methods (potentiodynamic polarization) and long-term exposure tests (up to 6 months). The research was carried out in the laboratory under stagnant conditions in theThis study aims to evaluate which of the materials currently available on the market could overcome the Problem of corrosion and withstand highly aggressive conditions in the exploitation of geothermal resources in volcanic environments. Our investigations were triggered by the conditions on Lahendong geothermal field (North Sulawesi, Indonesia): well LHD-23 presents one of the greatest challenges due to its capacity of producing > 20 MWe of energy from a single well and in the same time having very low pH (2-3) and relatively high Chloride (1,500 mg/L) and sulphate (1,600 mg/L) concentration. Three different Steel grades (low-alloyed Steel UNS G41300, stainless Steel UNS S31603 and high-alloyed stainless Steel UNS N08031) were selected, and their corrosion behavior was evaluated by means of short-term electrochemical methods (potentiodynamic polarization) and long-term exposure tests (up to 6 months). The research was carried out in the laboratory under stagnant conditions in the artificial LHD-23 geothermal brine (1,500 mg/L Chlorides, 1,600 mg/L sulphates, pH 2) at 100 °C (100 kPa) and 175 °C (900 kPa), simulating the conditions present at the site.…
MetadatenAutor*innen: | A. Keserovic, Ralph BäßlerORCiD, Y. Kamah |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
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Veröffentlichungsform: | Graue Literatur |
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Sprache: | Englisch |
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Titel des übergeordneten Werkes (Englisch): | Corrosion 2014 |
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Jahr der Erstveröffentlichung: | 2014 |
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Herausgeber (Institution): | NACE International |
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Erste Seite: | Paper 4031, 1 |
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Letzte Seite: | 14 |
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Freie Schlagwörter: | Carbon steel; Corrosion; Electrochemistry; Geothermal; Stainless steel |
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Veranstaltung: | Corrosion 2014 |
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Veranstaltungsort: | San Antonio, TX, USA |
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Beginndatum der Veranstaltung: | 09.03.2014 |
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Enddatum der Veranstaltung: | 13.03.2014 |
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Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
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Datum der Freischaltung: | 20.02.2016 |
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Referierte Publikation: | Ja |
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Datum der Eintragung als referierte Publikation: | 14.04.2014 |
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