Ammonia chemistry in a flameless jet

M Zieba, Anders Brink, A Schuster, Mikko Hupa, G Scheffknecht

    Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

    30 Sitaatiot (Scopus)


    In this paper, the nitrogen chemistry in an ammonia (NH(3)) doped flameless jet is investigated using a kinetic reactor network model. The reactor network model is used to explain the main differences in ammonia chemistry for methane (CH(4)) containing fuels and methane-free fuels. The chemical pathways of nitrogen oxides (NO(x)) formation and destruction are identified using rate-of-production analysis. The results show that in the case of natural gas, ammonia reacts relatively late at fuel lean condition leading to high NOx emissions. In the pre-ignition zone, the ammonia chemistry is blocked due to the absence of free radicals which are consumed by methane-methyl radical (CH(3)) conversion. In the case of methane-free gas, the ammonia reacted very rapidly and complete decomposition was reached in the fuel rich region of the jet. In this case the necessary radicals for the ammonia conversion are generated from hydrogen (H(2)) oxidation.
    AlkuperäiskieliEi tiedossa
    JulkaisuCombustion and Flame
    DOI - pysyväislinkit
    TilaJulkaistu - 2009
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu


    • Ammonia conversion
    • Flameless combustion
    • Fuel-NO(x)