Automated on-line determination of PPB levels of sodium and potassium in low-Btu coal gas and fluidized bed combustor exhaust by atomic emission spectrometry

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The Morgantown Energy Technology Center (METC), US Department of Energy, is involved in the development of processes and equipment for production of low-Btu gas from coal and for fluidized bed combustion of coal. The ultimate objective is large scale production of electricity using high temperature gas turbines. Such turbines, however, are susceptible to accelerated corrosion and self-destruction when relatively low concentrations of sodium and potassium are present in the driving gas streams. Knowledge and control of the concentrations of those elements, at part per billion levels, are critical to the success of both the gas cleanup procedures that are being ... continued below

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Pages: 18

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Haas, W.J. Jr.; Eckels, D.E.; Kniseley, R.N. & Fassel, V.A. January 1, 1981.

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Description

The Morgantown Energy Technology Center (METC), US Department of Energy, is involved in the development of processes and equipment for production of low-Btu gas from coal and for fluidized bed combustion of coal. The ultimate objective is large scale production of electricity using high temperature gas turbines. Such turbines, however, are susceptible to accelerated corrosion and self-destruction when relatively low concentrations of sodium and potassium are present in the driving gas streams. Knowledge and control of the concentrations of those elements, at part per billion levels, are critical to the success of both the gas cleanup procedures that are being investigated and the overall energy conversion processes. This presentation describes instrumentation and procedures developed at the Ames Laboratory for application to the problems outlined above and results that have been obtained so far at METC. The first Ames instruments, which feature an automated, dual channel flame atomic emission spectrometer, perform the sodium and potassium determinations simultaneously, repetitively, and automatically every two to three minutes by atomizing and exciting a fraction of the subject gas sample stream in either an oxyhydrogen flame or a nitrous oxide-acetylene flame. The analytical results are printed and can be transmitted simultaneously to a process control center.

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Pages: 18

Notes

NTIS, PC A02/MF A01.

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  • Symposium on instrumentation and control for fossil energy processes, San Francisco, CA, USA, 8 Jun 1981

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  • Other: DE81025527
  • Report No.: IS-M-330
  • Report No.: CONF-810607-12
  • Grant Number: W-7405-ENG-82
  • Office of Scientific & Technical Information Report Number: 6333158
  • Archival Resource Key: ark:/67531/metadc1204957

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 1981

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  • July 5, 2018, 11:11 p.m.

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  • Sept. 5, 2018, 11:47 a.m.

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Haas, W.J. Jr.; Eckels, D.E.; Kniseley, R.N. & Fassel, V.A. Automated on-line determination of PPB levels of sodium and potassium in low-Btu coal gas and fluidized bed combustor exhaust by atomic emission spectrometry, article, January 1, 1981; United States. (digital.library.unt.edu/ark:/67531/metadc1204957/: accessed December 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.