Advances in Ammonia Removal from Hot Coal Gas

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Description

Nitrogen occurs in coal in the form of tightly bound organic ring compounds, typically at levels of 1 to 2 wt%. During coal gasification, this fuel bound nitrogen is released principally as ammonia (NH{sub 3}). When hot coal gas is used to generate electricity in integrated gasification combined cycle (IGCC) power plants, NH{sub 3} is converted to nitrogen oxides (NO{sub x}) which are difficult to remove and are highly undesirable as atmospheric pollutants. Similarly, while the efficiency of integrated gasification molten carbonate fuel cell (IGFC) power plants is not affected by NH{sub 3}, NO{sub x} is generated during combustion of ... continued below

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8 p.

Creation Information

Jothimurugesan, K. & Gangwal, S. K. December 31, 1996.

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  • Jothimurugesan, K. Dept. of Chemical Engineering, Hamption Univ., VA (United States)
  • Gangwal, S. K. Research Triangle Inst., Research Triangle Park, NC (United States)

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Description

Nitrogen occurs in coal in the form of tightly bound organic ring compounds, typically at levels of 1 to 2 wt%. During coal gasification, this fuel bound nitrogen is released principally as ammonia (NH{sub 3}). When hot coal gas is used to generate electricity in integrated gasification combined cycle (IGCC) power plants, NH{sub 3} is converted to nitrogen oxides (NO{sub x}) which are difficult to remove and are highly undesirable as atmospheric pollutants. Similarly, while the efficiency of integrated gasification molten carbonate fuel cell (IGFC) power plants is not affected by NH{sub 3}, NO{sub x} is generated during combustion of the anode exhaust gas. Thus NH{sub 3} must be removed from hot coal gas before it can be burned in a turbine or fuel cell. The objective of this study is to develop a successful combination of an NH{sub 3} decomposition catalyst with a zinc-based mixed-metal oxide sorbent so that the sorbent-catalyst activity remains stable for NH{sub 3} decomposition in addition to H{sub 2}S removal under cycle sulfidation-regeneration conditions in the temperature range of 500 to 750{degrees}C.

Physical Description

8 p.

Notes

OSTI as DE97051048

Medium: P; Size: 8 p.

Source

  • Advanced coal-fired power systems review meeting, Morgantown, WV (United States), 16-18 Jul 1996

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Identifier

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  • Other: DE97051048
  • Report No.: DOE/MT/93005--97/C0751
  • Report No.: CONF-960757--41
  • Grant Number: FG22-93MT93005
  • DOI: 10.2172/427483 | External Link
  • Office of Scientific & Technical Information Report Number: 427483
  • Archival Resource Key: ark:/67531/metadc686119

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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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Creation Date

  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

Description Last Updated

  • April 13, 2017, 2:01 p.m.

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Jothimurugesan, K. & Gangwal, S. K. Advances in Ammonia Removal from Hot Coal Gas, report, December 31, 1996; Morgantown, West Virginia. (digital.library.unt.edu/ark:/67531/metadc686119/: accessed December 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.