Method and apparatus of measuring unburned carbon in fly ash

Title: Method and apparatus of measuring unburned carbon in fly ash

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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:

Brown, Robert C. ^[1]

(Ames, IA)

Issue Date:: 1991-12-03

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/

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                    Brown, Robert C. Method and apparatus of measuring unburned carbon in fly ash.  United States: N. p., 1991. 
        Web.

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                    Brown, Robert C. Method and apparatus of measuring unburned carbon in fly ash.  United States.

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                    Brown, Robert C. Tue .  
        "Method and apparatus of measuring unburned carbon in fly ash".  United States.  https://www.osti.gov/servlets/purl/868078.

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@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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