Assessment of sulphur and H2S corrosion by use of simultaneous ER, galvanic and optical measurements

Tor Hemmingsen, Lisbeth Rischel Hilbert, Lars Vendelbo Nielsen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    Sulphur and H2S corrosion on carbon steel is relevant in a range of industrial applications, including oil and gas production, district heating systems, and geothermal energy production. Bacterial activity may participate in the sulphur cycle and contribute to H2S production. As a part of the project "Corrosion monitoring in district heating systems" performed in collaboration between institutions and district heating companies in all Nordic countries and sponsored by the Nordic Industrial Fond, detailed studies of sulphur chemistry and consequent corrosion behaviour have been initiated. The formation and development of sulphur/sulphide films have been continuously monitored by cameras, and a data program made for sequential picture analyses have been used to quantify the film formation. Galvanic current measurements between carbon steel electrodes placed in a dual cell arrangement in which the pH and H2S levels were controlled individually have been used in an attempt to rank the corrosivity of different sulphur environments. The carbon steel electrodes were manufactured as electrical resistance sensors (ER sensors). Simultaneous measurements of the galvanic current, corrosion rate determined by the ER sensors, and optical studies of the film formation with the camera technique are presented and discussed.
    Original languageEnglish
    Title of host publicationEurocorr 2003
    Publication date2003
    Publication statusPublished - 2003
    EventEUROCORR 2003 - Budapest, Hungary
    Duration: 28 Sep 20032 Oct 2003

    Conference

    ConferenceEUROCORR 2003
    Country/TerritoryHungary
    CityBudapest
    Period28/09/200302/10/2003

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