Biomass Gasification Diagnostics with Flame Spectroscopy in an Oxy-fired Pressurized Gasification Facility

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Title Biomass Gasification Diagnostics with Flame Spectroscopy in an Oxy-fired Pressurized Gasification Facility
Creator Parameswaran, T.
Contributor Champagne, S., Hughes, R.
Date 2017-12-11
Description Paper from the AFRC 2017 conference titled Biomass Gasification Diagnostics with Flame Spectroscopy in an Oxy-fired Pressurized Gasification Facility
Abstract This paper reports and discusses the diagnostic information retrieved from flame spectra acquired in a pilot scale entrained flow gasification facility with biomass as fuel. Typically the operation of a high pressure oxygen fired gasification reactor is monitored by wall mounted thermocouples and on-line gas analyzers. In the current work which was done in the CanmetENERGY gasification facility, using burners designed by Air Liquide, a cooled and purged fibre optic probe coupled to a spectrometer was added to the monitoring system. The flame emission spectroscopy (FES) probe was inserted into an access port of the gasifier reactor to collect the flame radiation. Biomass flames are known to display spectral peaks arising from the alkali metals potassium and sodium. Often either or both of these emissions also display self- absorption. In the measurements reported here, in addition to the above alkali elements, spectral peaks which may be assigned to other metals were also observed. Emission peaks of heavy metals and trace elements, in the spectra of solid fuels, stack gases and ash samples are familiar in laser induced breakdown spectroscopy where the elements are excited to very high temperatures exceeding 10 000°C. However reports on such spontaneous emissions in high pressure biomass gasification flames are not apparent in literature. The acquired biomass flame spectra were analyzed to yield temperatures representing the reaction chamber region enclosing the central axis of the probe. This paper discusses the significance of the observed spectral emissions and spectrally derived temperatures representing the reaction chamber region, in monitoring the performance of the gasification process. The results reported assess the effectiveness of a flame spectroscopy probe as a value added tool for monitoring biomass gasification in an oxy-fired pressurized gasification facility.
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Metadata Cataloger Catrina Wilson
ARK ark:/87278/s6jx2qww
Setname uu_afrc
Date Created 2018-12-10
Date Modified 2018-12-10
ID 1388794
Reference URL https://collections.lib.utah.edu/ark:/87278/s6jx2qww