Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air

Satu Tuurna, Pekka Pohjanne, S. Filander, A. Silvonen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    Heavy fuel oils used in diesel engines contain residues of e.g. vanadium, sodium, calcium, sulfur, nickel and aluminum. Their amount varies depending on the source of the crude oil, refining methods as well as mixing ratio and handling process. During combustion these residues become concentrated in the ash. The sodium and vanadium levels are of major concern since they cause high temperature corrosion at temperatures over 500°C. During combustion, these elements oxidize and contribute to formation of semi-liquid and low melting salts causing increased fouling and corrosion of components. Higher efficiency and therefore higher operation temperature, and also lower quality fuels for economic reasons are future targets, and these create additional material challenges under already demanding conditions. The corrosion resistance of various currently used and new alternative materials under simulated medium speed diesel engine exhaust system environments was experimentally clarified. The selected materials were exposed at 650 and 750°C under moist synthetic air with Na 2CO 3-V 2O 5-CaSO 4 deposit up to 1000 h. The specimens were analyzed by means of cross-section microscopy
    Original languageEnglish
    Title of host publicationCorrosion conference and expo 2012
    Pages3993-4001
    Volume5
    Publication statusPublished - 2012
    MoE publication typeA4 Article in a conference publication
    EventCorrosion conference and expo 2012: NACE International corrosion 2012 conference and expo - Salt Lake City, United States
    Duration: 11 Mar 201215 Mar 2012

    Publication series

    SeriesNACE - International Corrosion Conference Series
    ISSN0361-4409

    Conference

    ConferenceCorrosion conference and expo 2012
    Abbreviated titleCORROSION2012
    CountryUnited States
    CitySalt Lake City
    Period11/03/1215/03/12

    Fingerprint

    Exhaust systems (engine)
    Deposits
    Ashes
    Vanadium
    Diesel engines
    Air
    Sodium
    Corrosion
    High temperature operations
    Residual fuels
    Fuel oils
    Fouling
    Refining
    Corrosion resistance
    Calcium
    Microscopic examination
    Melting
    Sulfur
    Crude oil
    Nickel

    Keywords

    • Calcium
    • corrosion
    • deposit
    • diesel engine
    • high alloyed steel
    • Ni-based alloy
    • sodium
    • stainless steel
    • valve material
    • vanadium

    Cite this

    Tuurna, S., Pohjanne, P., Filander, S., & Silvonen, A. (2012). Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air. In Corrosion conference and expo 2012 (Vol. 5, pp. 3993-4001). NACE - International Corrosion Conference Series
    Tuurna, Satu ; Pohjanne, Pekka ; Filander, S. ; Silvonen, A. / Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air. Corrosion conference and expo 2012. Vol. 5 2012. pp. 3993-4001 (NACE - International Corrosion Conference Series).
    @inproceedings{70e98b782c2e47f587d57d9af6d32606,
    title = "Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air",
    abstract = "Heavy fuel oils used in diesel engines contain residues of e.g. vanadium, sodium, calcium, sulfur, nickel and aluminum. Their amount varies depending on the source of the crude oil, refining methods as well as mixing ratio and handling process. During combustion these residues become concentrated in the ash. The sodium and vanadium levels are of major concern since they cause high temperature corrosion at temperatures over 500°C. During combustion, these elements oxidize and contribute to formation of semi-liquid and low melting salts causing increased fouling and corrosion of components. Higher efficiency and therefore higher operation temperature, and also lower quality fuels for economic reasons are future targets, and these create additional material challenges under already demanding conditions. The corrosion resistance of various currently used and new alternative materials under simulated medium speed diesel engine exhaust system environments was experimentally clarified. The selected materials were exposed at 650 and 750°C under moist synthetic air with Na 2CO 3-V 2O 5-CaSO 4 deposit up to 1000 h. The specimens were analyzed by means of cross-section microscopy",
    keywords = "Calcium, corrosion, deposit, diesel engine, high alloyed steel, Ni-based alloy, sodium, stainless steel, valve material, vanadium",
    author = "Satu Tuurna and Pekka Pohjanne and S. Filander and A. Silvonen",
    year = "2012",
    language = "English",
    isbn = "978-1-6227-6078-7",
    volume = "5",
    series = "NACE - International Corrosion Conference Series",
    publisher = "National Association of Corrosion Engineers",
    pages = "3993--4001",
    booktitle = "Corrosion conference and expo 2012",

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    Tuurna, S, Pohjanne, P, Filander, S & Silvonen, A 2012, Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air. in Corrosion conference and expo 2012. vol. 5, NACE - International Corrosion Conference Series, pp. 3993-4001, Corrosion conference and expo 2012, Salt Lake City, United States, 11/03/12.

    Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air. / Tuurna, Satu; Pohjanne, Pekka; Filander, S.; Silvonen, A.

    Corrosion conference and expo 2012. Vol. 5 2012. p. 3993-4001 (NACE - International Corrosion Conference Series).

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    TY - GEN

    T1 - Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air

    AU - Tuurna, Satu

    AU - Pohjanne, Pekka

    AU - Filander, S.

    AU - Silvonen, A.

    PY - 2012

    Y1 - 2012

    N2 - Heavy fuel oils used in diesel engines contain residues of e.g. vanadium, sodium, calcium, sulfur, nickel and aluminum. Their amount varies depending on the source of the crude oil, refining methods as well as mixing ratio and handling process. During combustion these residues become concentrated in the ash. The sodium and vanadium levels are of major concern since they cause high temperature corrosion at temperatures over 500°C. During combustion, these elements oxidize and contribute to formation of semi-liquid and low melting salts causing increased fouling and corrosion of components. Higher efficiency and therefore higher operation temperature, and also lower quality fuels for economic reasons are future targets, and these create additional material challenges under already demanding conditions. The corrosion resistance of various currently used and new alternative materials under simulated medium speed diesel engine exhaust system environments was experimentally clarified. The selected materials were exposed at 650 and 750°C under moist synthetic air with Na 2CO 3-V 2O 5-CaSO 4 deposit up to 1000 h. The specimens were analyzed by means of cross-section microscopy

    AB - Heavy fuel oils used in diesel engines contain residues of e.g. vanadium, sodium, calcium, sulfur, nickel and aluminum. Their amount varies depending on the source of the crude oil, refining methods as well as mixing ratio and handling process. During combustion these residues become concentrated in the ash. The sodium and vanadium levels are of major concern since they cause high temperature corrosion at temperatures over 500°C. During combustion, these elements oxidize and contribute to formation of semi-liquid and low melting salts causing increased fouling and corrosion of components. Higher efficiency and therefore higher operation temperature, and also lower quality fuels for economic reasons are future targets, and these create additional material challenges under already demanding conditions. The corrosion resistance of various currently used and new alternative materials under simulated medium speed diesel engine exhaust system environments was experimentally clarified. The selected materials were exposed at 650 and 750°C under moist synthetic air with Na 2CO 3-V 2O 5-CaSO 4 deposit up to 1000 h. The specimens were analyzed by means of cross-section microscopy

    KW - Calcium

    KW - corrosion

    KW - deposit

    KW - diesel engine

    KW - high alloyed steel

    KW - Ni-based alloy

    KW - sodium

    KW - stainless steel

    KW - valve material

    KW - vanadium

    M3 - Conference article in proceedings

    SN - 978-1-6227-6078-7

    VL - 5

    T3 - NACE - International Corrosion Conference Series

    SP - 3993

    EP - 4001

    BT - Corrosion conference and expo 2012

    ER -

    Tuurna S, Pohjanne P, Filander S, Silvonen A. Materials performance with Na 2CO 3-V 2O 5-CaSO 4 deposit under moist synthetic air. In Corrosion conference and expo 2012. Vol. 5. 2012. p. 3993-4001. (NACE - International Corrosion Conference Series).