Superheater tube corrosion in recovery boilers

Martti Mäkipää, E. Kauppinen, T. Lind, J. Pyykönen, Jorma Jokiniemi, Paterson McKeough, Maria Oksa, Th Malkow, R. Fordham, D. Baxter, L. Koivisto, K. Saviharju, E. Vakkilainen

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

    Abstract

    Deposit formation and corrosion of recovery boiler superheater tubes are known to be interrelated with boiler chemistry and the design, as well as the operation conditions in an extremely complex way. After a short review of typical superheater corrosion conditions in the past, a brief summary is given about the work on particulate formation and agglomeration in the flue gas path. Deposit formation mechanisms, deposition fluxes, transformation processes, deposit heat conductivity and heat transfer, as well as transport of deleterious species in the deposits is illuminated by model calculations. Corrosion processes and materials performance is discussed with reference to the results of materials exposures in industrial recovery boilers, and in laboratory corrosion tests. As a conclusion, current needs and likely future trends in the materials technology of superheaters of modern recovery boilers typically operating firing high solids liquors and with low sulphur emissions are summarised.
    Original languageEnglish
    Title of host publication10th International Symposium on Corrosion in the Pulp and Paper Industry, ISCPPI. Vol. 1
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Pages157-180
    ISBN (Electronic)951-38-5724-7
    ISBN (Print)951-38-5720-4
    Publication statusPublished - 2001
    MoE publication typeA4 Article in a conference publication
    Event10th International Symposium On corrosion in the Pulp and Paper Industry, ISCPPI - Helsinki, Finland
    Duration: 21 Aug 200124 Aug 2001

    Publication series

    SeriesVTT Symposium
    Number214
    ISSN0357-9387

    Conference

    Conference10th International Symposium On corrosion in the Pulp and Paper Industry, ISCPPI
    Abbreviated title10th ISCPPI
    CountryFinland
    CityHelsinki
    Period21/08/0124/08/01

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    Cite this

    Mäkipää, M., Kauppinen, E., Lind, T., Pyykönen, J., Jokiniemi, J., McKeough, P., Oksa, M., Malkow, T., Fordham, R., Baxter, D., Koivisto, L., Saviharju, K., & Vakkilainen, E. (2001). Superheater tube corrosion in recovery boilers. In 10th International Symposium on Corrosion in the Pulp and Paper Industry, ISCPPI. Vol. 1 (pp. 157-180). VTT Technical Research Centre of Finland. VTT Symposium, No. 214