Capture of toxic metals by vaious sorbents during fluidized bed coal combustion

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This study investigated the potential of employing suitable sorbents to capture trace metallic substances during fluidized bed coal combustion. The objectives of the study were to demonstrate the capture process, identify effective sorbents, and characterize the capture efficiency. Experiments were carried out in a 25.4 mm (1 ``) quartz fluidized bed coal combustor enclosed in an electric furnace. In an experiment, a coal sample from the DOE Coal Sample Bank or the Illinois Basin Coal Sample Bank was burned in the bed with a sorbent under various combustion conditions and the amount of metal capture by the sorbent was determined. ... continued below

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7 p.

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Ho, T.C.; Ghebremeskel, A. & Hopper, J.R. December 31, 1995.

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Description

This study investigated the potential of employing suitable sorbents to capture trace metallic substances during fluidized bed coal combustion. The objectives of the study were to demonstrate the capture process, identify effective sorbents, and characterize the capture efficiency. Experiments were carried out in a 25.4 mm (1 ``) quartz fluidized bed coal combustor enclosed in an electric furnace. In an experiment, a coal sample from the DOE Coal Sample Bank or the Illinois Basin Coal Sample Bank was burned in the bed with a sorbent under various combustion conditions and the amount of metal capture by the sorbent was determined. The metals involved in the study were arsenic, cadmium, lead, mercury and selenium, and the sorbents tested included bauxite, zeolite and lime. The combustion conditions examined included bed temperature, particle size, fluidization velocity (percent excess air), and sorbent bed height. In addition to the experimental investigations, potential metal-sorbent reactions were also identified through performing chemical equilibrium analyses based on the minimization of system free energy.

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7 p.

Notes

OSTI as DE97000633

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  • Annual meeting of the American Institute of Chemical Engineers, Miami Beach, FL (United States), 12-17 Nov 1995

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  • Other: DE97000633
  • Report No.: CONF-951180--4
  • Grant Number: FG22-94PC94221
  • Office of Scientific & Technical Information Report Number: 434415
  • Archival Resource Key: ark:/67531/metadc684878

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 31, 1995

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  • July 25, 2015, 2:20 a.m.

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  • Nov. 10, 2015, 7:13 p.m.

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Ho, T.C.; Ghebremeskel, A. & Hopper, J.R. Capture of toxic metals by vaious sorbents during fluidized bed coal combustion, article, December 31, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc684878/: accessed January 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.