Trace element emissions. Semi-annual report, October 1994--February 1995

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Many trace elements can exist in raw coal gas either in the form of metallic vapors or gaseous compounds which, besides their action on potentially ``very clean`` advanced power generating systems such as fuel cells and gas turbines, can also be detrimental to plant and animal life when released into the atmosphere. Therefore, volatile trace contaminants from coal which can also be toxic must be removed before they become detrimental to both power plant performance/endurance and the environment. Five trace elements were selected in this project based on: abundance in solid coal, volatility during gasification, effects on downstream systems and ... continued below

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85 p.

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Pigeaud, A.; Maru, H.; Wilemski, G. & Helble, J. February 1, 1995.

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Description

Many trace elements can exist in raw coal gas either in the form of metallic vapors or gaseous compounds which, besides their action on potentially ``very clean`` advanced power generating systems such as fuel cells and gas turbines, can also be detrimental to plant and animal life when released into the atmosphere. Therefore, volatile trace contaminants from coal which can also be toxic must be removed before they become detrimental to both power plant performance/endurance and the environment. Five trace elements were selected in this project based on: abundance in solid coal, volatility during gasification, effects on downstream systems and toxicity to plant and animal life. An understanding was sought in this investigation of the interactions of these five trace elements (and their high temperature species) with the different components in integrated cleanup and power generating systems, as well as the ultimate effects with respect to atmospheric emissions. Utilizing thermodynamic calculations and various experimental techniques, it was determined that a number of trace contaminants that exist in coal may be substantially removed by flyash, and after that by different sorbent systems. High temperature cleanup of contaminants by sorbents such as zinc titanate, primarily to remove sulfur, can also absorb some metallic contaminants such as cadmium and antimony. Further polishing will be required, however, to eliminate trace contaminant species incorporating the elements arsenic, selemium, lead, and mercury.

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85 p.

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OSTI as DE95000090

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  • Other Information: PBD: Feb 1995

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  • Other: DE95000090
  • Report No.: DOE/MC/29261--4020
  • Grant Number: AC21-92MC29261
  • DOI: 10.2172/49121 | External Link
  • Office of Scientific & Technical Information Report Number: 49121
  • Archival Resource Key: ark:/67531/metadc679937

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  • February 1, 1995

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • Dec. 4, 2015, 1:48 p.m.

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Pigeaud, A.; Maru, H.; Wilemski, G. & Helble, J. Trace element emissions. Semi-annual report, October 1994--February 1995, report, February 1, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc679937/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.