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Title: 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:
 [1]
  1. (Ames, IA)
Issue Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA; 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) AMES
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}
}

Patent:

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