Investigation of Fly Ash and Activated Carbon Obtained from Pulverized Coal Boilers

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One of the techniques for Hg capture in coal-fired boilers involves injection of activated carbon (AC) into the boiler downstream of the air preheater. Hg is adsorbed onto the AC particles and fly ash, which are then both removed in an electrostatic precipitator or baghouse. This project addressed the issues of Hg on activated carbon and on fly ash from a materials re-use point of view. It also addressed the possible connection between SCR reactors, fly ash properties and Hg capture. The project has determined the feasibility of separating AC from fly ash in a fluidized bed and of regenerating ... continued below

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Levy, Edward K.; Kiely, Christopher & Yao, Zheng August 31, 2006.

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One of the techniques for Hg capture in coal-fired boilers involves injection of activated carbon (AC) into the boiler downstream of the air preheater. Hg is adsorbed onto the AC particles and fly ash, which are then both removed in an electrostatic precipitator or baghouse. This project addressed the issues of Hg on activated carbon and on fly ash from a materials re-use point of view. It also addressed the possible connection between SCR reactors, fly ash properties and Hg capture. The project has determined the feasibility of separating AC from fly ash in a fluidized bed and of regenerating the separated AC by heating the AC to elevated temperatures in a fluidized bed. The temperatures needed to drive off the Hg from the ash in a fluidized bed have also been determined. Finally, samples of fly ash from power plants with SCR reactors for NO{sub x} control have been analyzed in an effort to determine the effects of SCR on the ash.

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  • Report No.: None
  • Grant Number: FG26-03NT41796
  • DOI: 10.2172/907888 | External Link
  • Office of Scientific & Technical Information Report Number: 907888
  • Archival Resource Key: ark:/67531/metadc881472

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  • August 31, 2006

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 29, 2016, 4:25 p.m.

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Levy, Edward K.; Kiely, Christopher & Yao, Zheng. Investigation of Fly Ash and Activated Carbon Obtained from Pulverized Coal Boilers, report, August 31, 2006; United States. (digital.library.unt.edu/ark:/67531/metadc881472/: accessed September 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.