In situ FT-IR spectroscopic investigations of species from biomass fuels in a laboratory-scale combustor: the release of nitrogenous species

A. Weissinger, T. Fleckl, I. Obernberger

    Research output: Contribution to journalArticleAcademicpeer-review

    24 Citations (Scopus)

    Abstract

    In situ FT-IR absorption spectroscopy was used with a laboratory-scale reactor and thermogravimetric analysis to describe the release of nitrogen-containing compounds from a fixed bed of fibreboard residues. Such in situ detection of NH3 requires knowledge of the absorption coefficients at high temperatures. These coefficients were obtained from calibrations using a laboratory-scale reactor at temperatures up to 800 degreesC, as well as from calculations using a database. On the basis of laboratory experiments, the rates of release of N species, of the major C species (CO, CO2, and CH4), and of H2O have been derived. It is concluded that the release of nitrogen from the fuel can be modelled if such parameters as the superficial velocity and the flow rate of oxygen are known. This method allows profiles of the nitrogenous species to be generated and used as input data for CFD calculations based on thermodynamic combustion models for a fixed bed on a grate.
    Original languageEnglish
    Pages (from-to)403-417
    Number of pages15
    JournalCombustion and Flame
    Volume137
    DOIs
    Publication statusPublished - 2004

    Fingerprint Dive into the research topics of 'In situ FT-IR spectroscopic investigations of species from biomass fuels in a laboratory-scale combustor: the release of nitrogenous species'. Together they form a unique fingerprint.

  • Cite this