Development of Disposable Sorbents for Chloride Removal from High-Temperature Coal-Derived Gases

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The integrated coal-gasification combined-cycle approach is an efficient process for producing electric power from coal by gasification, followed by high-temperature removal of gaseous impurities, then electricity generation by gas turbines. Alternatively, molten carbonate fuel cells (MCFC) may be used instead of gas turbine generators. The coal gas must be treated to remove impurities such as hydrogen chloride (HCl), a reactive, corrosive, and toxic gas, which is produced during gasification from chloride species in the coal. HCl vapor must be removed to meet environmental regulations, to protect power generation equipments such as fuel cells or gas turbines, and to minimize deterioration ... continued below

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11 p.

Creation Information

Krishnan, G.N.; Canizales, A.; Gupta, R. & Ayala, R. December 31, 1996.

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  • Krishnan, G.N.
  • Canizales, A. SRI International, Menlo Park, CA (United States)
  • Gupta, R. Research Triangle Inst., Research Triangle Park, NC (United States)
  • Ayala, R. General Electric Co., Schenectady, NY (United States). Corporate Research and Development Center

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Description

The integrated coal-gasification combined-cycle approach is an efficient process for producing electric power from coal by gasification, followed by high-temperature removal of gaseous impurities, then electricity generation by gas turbines. Alternatively, molten carbonate fuel cells (MCFC) may be used instead of gas turbine generators. The coal gas must be treated to remove impurities such as hydrogen chloride (HCl), a reactive, corrosive, and toxic gas, which is produced during gasification from chloride species in the coal. HCl vapor must be removed to meet environmental regulations, to protect power generation equipments such as fuel cells or gas turbines, and to minimize deterioration of hot coal gas desulfurization sorbents. The objectives of this study are to: (1) investigate methods to fabricate reactive sorbent pellets or granules that are capable of reducing HCl vapor in high-temperature coal gas streams to less than 1 ppm in the temperature range 400{degrees}C to 650{degrees}C and the pressure range 1 to 20 atm; (2) testing their suitability in bench-scale fixed- or fluidized-bed reactors; (3) testing a superior sorbent in a circulating fluidized- bed reactor using a gas stream from an operating coal gasifier; and (4) updating the economics of high temperature HCl removal.

Physical Description

11 p.

Notes

OSTI as DE97051045

Medium: P; Size: 11 p.

Source

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

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  • Other: DE97051045
  • Report No.: DOE/MC/30005--97/C0748
  • Report No.: CONF-960757--38
  • Grant Number: AC21-93MC30005
  • DOI: 10.2172/421952 | External Link
  • Office of Scientific & Technical Information Report Number: 421952
  • Archival Resource Key: ark:/67531/metadc688278

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  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • April 6, 2017, 7:17 p.m.

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Krishnan, G.N.; Canizales, A.; Gupta, R. & Ayala, R. Development of Disposable Sorbents for Chloride Removal from High-Temperature Coal-Derived Gases, report, December 31, 1996; Morgantown, West Virginia. (digital.library.unt.edu/ark:/67531/metadc688278/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.