Measured gas and particle temperatures in VTT's entrained flow reactor

Sønnik Clausen, L.H. Sørensen

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    Abstract

    Particle and gas temperature measurements were carried out in experiments on VTTs entrained flow reactor with 5% and 10% oxygen using Fourier transform infrared emission spectroscopy (FTIR). Particle temperature measurements were performed on polish coal, bark, wood, straw particles, and bark and wood particles treated with additive. A two-color technique with subtraction of the background light was used to estimate particle temperatures during experiments.

    A transmission-emission technique was used to measure the gas temperature in the reactor tube. Gas temperature measurements were in good agreement with thermocouple readings. Gas lines and bands from CO, CO2 and H2O can be observed in the spectra. CO was only observed at the first measuring port (100 ms) with the strongest CO-signal seen during experiments with straw particles. Variations in gas concentration (CO2 and H2O) and the signal from solid particles reflects variations in particle feeding rates during the experiments.
    Original languageEnglish
    Place of PublicationRoskilde
    PublisherRisø National Laboratory
    Number of pages16
    ISBN (Print)87-550-3460-8
    Publication statusPublished - 2006
    SeriesDenmark. Forskningscenter Risoe. Risoe-R
    Number1524(EN)
    ISSN0106-2840

    Keywords

    • Risø-R-1524
    • Risø-R-1524(EN)

    Cite this

    Clausen, S., & Sørensen, L. H. (2006). Measured gas and particle temperatures in VTT's entrained flow reactor. Risø National Laboratory. Denmark. Forskningscenter Risoe. Risoe-R, No. 1524(EN)