Method and apparatus of measuring unburned carbon in fly ash
Abstract
A method and apparatus are shown to measure unburned carbon particles in the exhaust of a combustor. Photoacoustic absorption spectrometry is employed to measure the presence of the unburned carbon. Especially helpful in these measurements is a vertically elongated photoacoustic cell in which high flow velocities are maintained to prevent particles from settling. These measurements are useful in determining the efficiency of coal-fired combustors.
- Inventors:
-
- Ames, IA
- Issue Date:
- Research Org.:
- Ames Lab., Ames, IA (United States); Iowa State University, Ames, IA (US)
- OSTI Identifier:
- 868078
- Patent Number(s):
- 5069551
- Application Number:
- 07/440,686
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- W-7405-ENG-82
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; apparatus; measuring; unburned; carbon; fly; ash; shown; measure; particles; exhaust; combustor; photoacoustic; absorption; spectrometry; employed; presence; especially; helpful; measurements; vertically; elongated; cell; flow; velocities; maintained; prevent; settling; useful; determining; efficiency; coal-fired; combustors; flow velocities; fly ash; carbon particles; unburned carbon; prevent particles; fired combustors; prevent particle; absorption spectrometry; /356/
Citation Formats
Brown, Robert C. Method and apparatus of measuring unburned carbon in fly ash. United States: N. p., 1991.
Web.
Brown, Robert C. Method and apparatus of measuring unburned carbon in fly ash. United States.
Brown, Robert C. Tue .
"Method and apparatus of measuring unburned carbon in fly ash". United States. https://www.osti.gov/servlets/purl/868078.
@article{osti_868078,
title = {Method and apparatus of measuring unburned carbon in fly ash},
author = {Brown, Robert C},
abstractNote = {A method and apparatus are shown to measure unburned carbon particles in the exhaust of a combustor. Photoacoustic absorption spectrometry is employed to measure the presence of the unburned carbon. Especially helpful in these measurements is a vertically elongated photoacoustic cell in which high flow velocities are maintained to prevent particles from settling. These measurements are useful in determining the efficiency of coal-fired combustors.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {12}
}
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