Co-firing black liquor and biomass in a laboratory single droplet reactor - effects on emissions and combustion characteristics

Nikolai De Martini, Esperanza Monedero, Patrik Yrjas, Mikko Hupa

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    1 Citeringar (Scopus)

    Sammanfattning

    Mills having recovery boilers with excess capacity can potentially mix other biofuels into the black liquor to produce more electricity from biomass. This work is a laboratory study of the effect on combustion of mixing other biofuels with black liquor. The four fuels mixed with softwood black liquor were bark, wood chips, peat, and bio-sludge (which some mills already burn with black liquor). Droplets of the mixed fuels were burned at 1100 degrees C and 3% O-2 in a single particle reactor. Video and on-line gas analyzers for CO, CO2 and NO were used to measure swelling, combustion times, carbon evolution (CO+CO2), and NO formation tendency. We found changes in swelling, char burning, and NO formation, but the results indicate that mixing biofuels with black liquor may be a reasonable method of producing additional electricity.
    OriginalspråkOdefinierat/okänt
    Sidor (från-till)30–34
    Antal sidor6
    TidskriftTappi Journal
    Volym9
    Utgåva9
    StatusPublicerad - 2010
    MoE-publikationstypA1 Tidskriftsartikel-refererad

    Nyckelord

    • black liquor
    • Biofuels

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