Alkali-metal-vapor removal from pressurized fluidized-bed-combustor flue gas. Annual report, October 1981-September 1982

Lee, S H.D.; Myles, K M; Jonke, A A

Title: Alkali-metal-vapor removal from pressurized fluidized-bed-combustor flue gas. Annual report, October 1981-September 1982

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Abstract

This work supports the program to develop sorbents for the cleanup of gases from pressurized fluidized-bed coal combustion (PFBC) so that the cleaned hot gases can be used to power downstream gas turbines without causing corrosion. A simulated PFBC flue gas containing NaCl vapor was used to characterize activated bauxite and diatomaceous earth at a bed temperature of 905/sup 0/C and a system pressure of 10 atm absolute. The NaCl vapor was found to be captured by activated bauxite essentially as sodium sulfate, with a small fraction captured as sodium chloride. In contrast, diatomaceous earth captured NaCl vapor by a combined result of (1) a chemical reaction that converts the vapor into condensed sodium sulfate and (2) chemical reactions that transform the captured sodium into water-insoluble silicate compounds. In NaCl-vapor sorption efficiency studies, a 12.7-cm-long activated bauxite bed was tested for 12 h in a gas stream containing 4 to 8 ppmV NaCl-vapor concentration, and >99.8% NaCl-vapor sorption efficiency was achieved. This efficiency compared with 99.1 and 95.3% obtained by a diatomaceous earth bed of the same length tested for 8 h in gas streams containing 28 and 2 ppmV NaCl-vapor concentration, respectively. The addition of HCl to the simulatedmore »« less

Authors:: Lee, S H.D.; Myles, K M; Jonke, A A

Publication Date:: Tue Mar 01 00:00:00 EST 1983

Research Org.:: Argonne National Lab., IL (USA)

OSTI Identifier:: 6456356

Report Number(s):: ANL/FE-82-24
ON: DE83010689

DOE Contract Number:: W-31-109-ENG-38

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 20 FOSSIL-FUELED POWER PLANTS; ALKALI METALS; ADSORPTION; COMBINED-CYCLE POWER PLANTS; FLUIDIZED-BED COMBUSTORS; FLUE GAS; HOT GAS CLEANUP; EFFICIENCY; ADSORBENTS; BAUXITE; COAL; EXPERIMENTAL DATA; ALUMINIUM ORES; CARBONACEOUS MATERIALS; COMBUSTORS; DATA; ELEMENTS; ENERGY SOURCES; FOSSIL FUELS; FUELS; GASEOUS WASTES; INFORMATION; MATERIALS; METALS; NUMERICAL DATA; ORES; POWER PLANTS; PURIFICATION; SORPTION; THERMAL POWER PLANTS; WASTES; 200202* - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions; 200104 - Fossil-Fueled Power Plants- Components

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                    Lee, S H.D., Myles, K M, and Jonke, A A. Alkali-metal-vapor removal from pressurized fluidized-bed-combustor flue gas. Annual report, October 1981-September 1982.  United States: N. p., 1983. 
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                    Lee, S H.D., Myles, K M, & Jonke, A A. Alkali-metal-vapor removal from pressurized fluidized-bed-combustor flue gas. Annual report, October 1981-September 1982.  United States.

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                    Lee, S H.D., Myles, K M, and Jonke, A A. 1983.  
        "Alkali-metal-vapor removal from pressurized fluidized-bed-combustor flue gas. Annual report, October 1981-September 1982".  United States.

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@article{osti_6456356,

  title        = {Alkali-metal-vapor removal from pressurized fluidized-bed-combustor flue gas. Annual report, October 1981-September 1982},

  author       = {Lee, S H.D. and Myles, K M and Jonke, A A},

  abstractNote = {This work supports the program to develop sorbents for the cleanup of gases from pressurized fluidized-bed coal combustion (PFBC) so that the cleaned hot gases can be used to power downstream gas turbines without causing corrosion. A simulated PFBC flue gas containing NaCl vapor was used to characterize activated bauxite and diatomaceous earth at a bed temperature of 905/sup 0/C and a system pressure of 10 atm absolute. The NaCl vapor was found to be captured by activated bauxite essentially as sodium sulfate, with a small fraction captured as sodium chloride. In contrast, diatomaceous earth captured NaCl vapor by a combined result of (1) a chemical reaction that converts the vapor into condensed sodium sulfate and (2) chemical reactions that transform the captured sodium into water-insoluble silicate compounds. In NaCl-vapor sorption efficiency studies, a 12.7-cm-long activated bauxite bed was tested for 12 h in a gas stream containing 4 to 8 ppmV NaCl-vapor concentration, and >99.8% NaCl-vapor sorption efficiency was achieved. This efficiency compared with 99.1 and 95.3% obtained by a diatomaceous earth bed of the same length tested for 8 h in gas streams containing 28 and 2 ppmV NaCl-vapor concentration, respectively. The addition of HCl to the simulated flue gas had an insignificant effect on the NaCl-vapor sorption behavior and efficiency of activated bauxite. Experimental results are also presented on (1) the water leachability of the sodium captured on activated bauxite, (2) the partial conversion to sodium sulfate of the NaCl sample used as the vapor source for the sorption tests, and (3) the changes in the chemical and physical properties of both sorbents as a result of exposure to the simulated flue gas.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/6456356},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Mar 01 00:00:00 EST 1983},

  month        = {Tue Mar 01 00:00:00 EST 1983}

}

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Under the auspices of US Department of Energy, this work supports the program to develop sorbents for the cleanup of gases from pressurized fluidized-bed coal combustion (PFBC) so that these cleaned hot gases can be used to power downstream gas turbines without causing corrosion. A laboratory-scale pressurized test unit was used to continue the alkali-vapor characterization of activated bauxite and Emathlite at a bed temperature of 850/sup 0/C and a system pressure of 10 atm absolute in a simulated PFBC flue gas stream containing <10 ppMV NaCl vapor. Under the test conditions, preliminary results show a comparable NaCl-vapor capture capabilitymore »« less
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This work supports the program to develop methods for achieving sufficient cleanup of combustion gases from pressurized fluidized-bed coal combustors (PFBC) so that the cleaned gases can be used to power downstream gas turbines without causing corrosion. A simulated PFBC flue gas was used to characterize the NaCl-vapor sorption behavior of activated bauxite at a bed temperature of 905/sup 0/C and a system pressure of 10 atm absolute. Although the addition of HCl to simulated PFBC flue gas tends to promote the capture of NaCl vapor by activated bauxite as NaCl rather than Na/sub 2/SO/sub 4/, overall, its effect onmore »« less
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