Trace metal capture by various sorbents during fluidized bed coal combustion

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Experiments were conducted in a 1-in. quartz fluidized bed combustor enclosed in an electric furnace. Coal samples were burned in the bed with a sorbent under specific combustion conditions and the amount of metal capture by the sorbent determined. Three different cao samples from the Illinois Basin Coal Sample Bank were tested. Metals involved were Cd, Pb, and Cr; the sorbents included bauxite, zeolite, and lime. Potential metal-sorbent reactions were identified. Results indicated that metal capture by sorbent can be as high as 96%, depending on the metal species and sorbent. All 3 sorbents were capable of capturing Pb, zeolite ... continued below

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17 p.

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Ho, T.C.; Ghebremeskel, A. & Hopper, J.R. June 1, 1996.

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Description

Experiments were conducted in a 1-in. quartz fluidized bed combustor enclosed in an electric furnace. Coal samples were burned in the bed with a sorbent under specific combustion conditions and the amount of metal capture by the sorbent determined. Three different cao samples from the Illinois Basin Coal Sample Bank were tested. Metals involved were Cd, Pb, and Cr; the sorbents included bauxite, zeolite, and lime. Potential metal-sorbent reactions were identified. Results indicated that metal capture by sorbent can be as high as 96%, depending on the metal species and sorbent. All 3 sorbents were capable of capturing Pb, zeolite and lime were able to capture Cr, and bauxite was the only sorbent capable of capturing Cd. Thermodynamic equilibrium calculations suggested the formation of metal-sorbent compounds such as Pb{sub 2}SiO{sub 4}, CdAl{sub 2}O{sub 4}, and CdSiO{sub 3} solids under the combustion conditions.

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17 p.

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OSTI as DE96009436

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  • 26. international symposium on combustion, Naples (Italy), 28 Jul - 2 Aug 1996

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  • Other: DE96009436
  • Report No.: CONF-960772--6
  • Grant Number: FG22-94PC94221
  • Office of Scientific & Technical Information Report Number: 240355
  • Archival Resource Key: ark:/67531/metadc671234

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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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  • June 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Dec. 4, 2015, 1:48 p.m.

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Ho, T.C.; Ghebremeskel, A. & Hopper, J.R. Trace metal capture by various sorbents during fluidized bed coal combustion, article, June 1, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc671234/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.