Materials Problems and Solutions in Biomass Fired Plants

Ole Hede Larsen (Invited author), Melanie Montgomery (Invited author)

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

    Abstract

    Due to Denmark’s pledge to reduce carbon dioxide emissions, biomass is utilised increasingly as a fuel for generating energy. Extensive research and demonstration projects especially in the area of material performance for biomass fired boilers have been undertaken to make biomass a viable fuel resource. When straw is combusted, potassium chloride and potassium sulphate are present in ash products, which condense on superheater components. This gives rise to specific chlorine corrosion problems not previously encountered in coal-fired power plants. The type of corrosion attack can be directly ascribed to the composition of the deposit and the metal surface temperature. In woodchip boilers, a similar corrosion rate and corrosion mechanism has on some occasions been observed. Co-firing of straw (10 and 20% energy basis) with coal has shown corrosion rates lower than those in straw-fired plants. With both 10 and 20% straw, no chlorine corrosion was seen. This paper will describe the results from in situ investigations undertaken in Denmark on high temperature corrosion in biomass fired plants. Results from 100% straw-firing, woodchip and co-firing of straw with fossil fuels are summarised and compared.
    Original languageEnglish
    Title of host publicationMaterials of Advanced Power Engineering
    Publication date2006
    Pages245-260
    Publication statusPublished - 2006
    Event8th Conference on "Alloy Development for Critical Components of Environmentally Friendly Steam Power Plant” & on "High Temperature Plant lifetime Extension": Materials for Advanced Power Engineering - Liege, Belgium
    Duration: 1 Jan 2006 → …

    Conference

    Conference8th Conference on "Alloy Development for Critical Components of Environmentally Friendly Steam Power Plant” & on "High Temperature Plant lifetime Extension"
    CountryBelgium
    CityLiege
    Period01/01/2006 → …

    Cite this

    Larsen, O. H., & Montgomery, M. (2006). Materials Problems and Solutions in Biomass Fired Plants. In Materials of Advanced Power Engineering (pp. 245-260)