HETEROGENEOUS REBURNING BY MIXED FUELS

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Recent studies of heterogeneous reburning, i.e., reburning involving a coal-derived char, have elucidated its variables, kinetics and mechanisms that are valuable to the development of a highly efficient reburning process. Young lignite chars contain catalysts that not only reduce NO, but they also reduce HCN that is an important intermediate that recycles to NO in the burnout zone. Gaseous CO scavenges the surface oxides that are formed during NO reduction, regenerating the active sites on the char surface. Based on this mechanistic information, cost-effective mixed fuels containing these multiple features has been designed and tested in a simulated reburning apparatus. ... continued below

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35 pages

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Chen, Wei-Yin & Gathitu, Benson B. January 14, 2005.

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Description

Recent studies of heterogeneous reburning, i.e., reburning involving a coal-derived char, have elucidated its variables, kinetics and mechanisms that are valuable to the development of a highly efficient reburning process. Young lignite chars contain catalysts that not only reduce NO, but they also reduce HCN that is an important intermediate that recycles to NO in the burnout zone. Gaseous CO scavenges the surface oxides that are formed during NO reduction, regenerating the active sites on the char surface. Based on this mechanistic information, cost-effective mixed fuels containing these multiple features has been designed and tested in a simulated reburning apparatus. Remarkably high reduction of NO and HCN has been observed and it is anticipated that mixed fuel will remove 85% of NO in a three-stage reburning process.

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35 pages

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OSTI as DE00839991

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  • Other Information: PBD: 14 Jan 2005

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  • Report No.: NONE
  • Grant Number: FG26-02NT41552
  • DOI: 10.2172/839991 | External Link
  • Office of Scientific & Technical Information Report Number: 839991
  • Archival Resource Key: ark:/67531/metadc785593

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  • January 14, 2005

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • Jan. 4, 2017, 2 p.m.

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Chen, Wei-Yin & Gathitu, Benson B. HETEROGENEOUS REBURNING BY MIXED FUELS, report, January 14, 2005; United States. (digital.library.unt.edu/ark:/67531/metadc785593/: accessed August 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.