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Proceedings Paper

In-situ measurement of residual carbon content in flyash
Author(s): Anthony S. Bonanno; Kim S. Knight; Karen Kinsella; Michael A. Serio; Peter R. Solomon
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Paper Abstract

An on-line carbon-in-ash monitor based on in-situ infrared emission spectrometry is described. Laboratory measurements of the infrared spectral emissivity of flyash are presented in order to demonstrate that emissivity can be correlated to the residual carbon content in the range of interest for pulverized coal-fired power plants. Data collected during a field test at a pilot-scale combustor are presented in order to demonstrate that the emissivity measurements could be made in situ on a realistic facility, and that the spectral emissivity could be correlated to the residual carbon content. Since this measurement can be made in-situ in a few seconds using an FT-IR spectrometer, an infrared emissivity based carbon-in-ash monitor will be capable of providing data on a time scale appropriate for implementation in combustion control strategies while avoiding the disadvantages associated with extractive ash sampling.

Paper Details

Date Published: 19 January 1995
PDF: 8 pages
Proc. SPIE 2367, Optical Sensors for Environmental and Chemical Process Monitoring, (19 January 1995); doi: 10.1117/12.199667
Show Author Affiliations
Anthony S. Bonanno, Advanced Fuel Research, Inc. (United States)
Kim S. Knight, Advanced Fuel Research, Inc. (United States)
Karen Kinsella, Advanced Fuel Research, Inc. (United States)
Michael A. Serio, Advanced Fuel Research, Inc. (United States)
Peter R. Solomon, Advanced Fuel Research, Inc. (United States)


Published in SPIE Proceedings Vol. 2367:
Optical Sensors for Environmental and Chemical Process Monitoring
Ishwar D. Aggarwal; Stuart Farquharson; Eric Koglin, Editor(s)

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