Metallic species derived from fluidized bed coal combustion. [59 references]

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Samples of fly ash generated by the combustion of Montana Rosebud coal in an experimental 18 inch fluidized bed combustor were collected. The use of a heated cascade impactor permitted collection of size fractionated material that avoided condensation of volatile gases on the particles. Elemental concentration trends were determined as a function of size and temperature and the results compared to published reports for conventional power plants. The behavior of trace metals appears to be substantially different in the two systems due to lower operating temperatures and the addition of limestone to the fluidized bed. Corrosion of the impactor plates ... continued below

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Pages: 110

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Natusch, D.F.S. & Taylor, D.R. January 1, 1980.

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Description

Samples of fly ash generated by the combustion of Montana Rosebud coal in an experimental 18 inch fluidized bed combustor were collected. The use of a heated cascade impactor permitted collection of size fractionated material that avoided condensation of volatile gases on the particles. Elemental concentration trends were determined as a function of size and temperature and the results compared to published reports for conventional power plants. The behavior of trace metals appears to be substantially different in the two systems due to lower operating temperatures and the addition of limestone to the fluidized bed. Corrosion of the impactor plates was observed at the highest temperature and lowest limestone feed rate sampled during the study. Data from the elemental concentration and leaching studies suggest that corrosion is most likely due to reactions involving sodium sulfate. However, it is concluded that corrosion is less of a potential problem in fluidized-bed systems than in conventional coal-fired systems.

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Pages: 110

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NTIS, PC A06/MF A01.

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  • Report No.: DOE/MC/08196-T1
  • Grant Number: AS21-77MC08196
  • DOI: 10.2172/6651008 | External Link
  • Office of Scientific & Technical Information Report Number: 6651008
  • Archival Resource Key: ark:/67531/metadc1186545

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • January 1, 1980

Added to The UNT Digital Library

  • July 3, 2018, 8:14 a.m.

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  • Sept. 28, 2018, 6:11 p.m.

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Natusch, D.F.S. & Taylor, D.R. Metallic species derived from fluidized bed coal combustion. [59 references], report, January 1, 1980; United States. (https://digital.library.unt.edu/ark:/67531/metadc1186545/: accessed March 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.