Modelling co-combustion of wood and coal in circulating fluidised beds

Juan Adanez, Luis F. de Diego, Pilar Gayan, Francisco Garcia-Labiano, Andreas Cabanillas, Alberto Bahillo, Martti Aho, Kati Veijonen

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

    Abstract

    In this work carbon combustion efficiencies in circulating fluidised bed combustors (CFBC) when cofiring biomass and coal mixtures were studied. Experimental results were obtained from the combustion of two kinds of coals with forest residue (pine bark) in two pilot plants (0.1 and 0.3 MW). The effect of operating conditions such as percentage of biomass in feed, temperature, excess air, air velocity, coal particle size distribution and percentage of secondary air on carbon combustion efficiency was analysed. A mathematical model to predict the behaviour of the co-combustion of coal and biomass in a CFBC has been developed. The developed model can predict the different gas concentrations along the riser (O2, CO, CH4, etc.) and the carbon combustion efficiency. The experimental results of carbon combustion efficiencies and gas emissions were compares with those predicted by the model and a good correlation was found for all the conditions tested.
    Original languageEnglish
    Title of host publicationChemical industry and environment IV
    Subtitle of host publication4th European Meeting
    PublisherUniversidad de Las Palmas de Gran Canaria
    ISBN (Print)978-84-89528-60-4
    Publication statusPublished - 2003
    MoE publication typeA4 Article in a conference publication
    Event4th European Meeting on Chemical Industry and Environment, EMChIE 2003 - Las Palmas de Gran Canaria, Spain
    Duration: 12 Feb 200314 Feb 2003

    Conference

    Conference4th European Meeting on Chemical Industry and Environment, EMChIE 2003
    CountrySpain
    CityLas Palmas de Gran Canaria
    Period12/02/0314/02/03

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