Measurement of alkali-vapor emission from pressurized fluidized-bed combustion of Illinois coals

Measurement of alkali-vapor emission from pressurized fluidized-bed combustion of Illinois coals [electronic resource]

Show other versions (1)

Two Illinois Herrin No. 6 coals and one Illinois Springfield No. 5 coal were separately combusted in a laboratory-scale (15-cm dia) pressurized fluidized-bed combustor (PFBC) combined with an alkali sorber. These coals were combusted in a fluidized bed of Tymochtee dolomite at temperatures ranging f...

Full description

Saved in:
Bibliographic Details
Online Access: Online Access
Corporate Author: Argonne National Laboratory (Researcher)
Format: Government Document Electronic eBook
Language:English
Published: Washington, D.C. : Oak Ridge, Tenn. : United States. Department of Energy ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, 1993.
Subjects:
Alkali Metal Compounds.
Vapors.
Bauxite.
Sorptive Properties.
Coal.
Adsorption.
Emission.
Gas Turbines.
Illinois.
Numerical Data.
Pressurization.
Sodium Chlorides.
Specifications.
Aluminium Ores.
Carbonaceous Materials.
Chemical Reactions.
Chlorides.
Chlorine Compounds.
Combustion.
Data.
Energy Sources.
Equipment.
Fluids.
Fossil Fuels.
Fuels.
Gases.
Halides.
Halogen Compounds.
Information.
Machinery.
Materials.
North America.
Fluidized-Bed Combustion.
Oxidation.
Sodium Compounds.
Sorption.
Surface Properties.
Thermochemical Processes.
Developed Countries.
Turbines.
Turbomachinery.
Ores.
Usa.
Coal, Lignite, And Peat.
Description
Summary:Two Illinois Herrin No. 6 coals and one Illinois Springfield No. 5 coal were separately combusted in a laboratory-scale (15-cm dia) pressurized fluidized-bed combustor (PFBC) combined with an alkali sorber. These coals were combusted in a fluidized bed of Tymochtee dolomite at temperatures ranging from 910 to 950[degree]C and a system pressure of 9.2 atm absolute. Alkali-vapor emission (Na and K) in the PFBC flue gas was determined by the analytical activated-bauxite sorber bed technique developed at Argonne National Laboratory. The test results showed that sodium is the major alkali-vapor species present in the PFBC flue gas, and that the level of sodium-vapor emission increases linearly with both Na and Cl contents in the coals. This suggests that the sodium-vapor emission results from direct vaporization of NaCl present in the coals. The measured alkali-vapor concentration (Na + K), 67 to 190 ppbW, is more than 2.5 times greater than the allowable alkali limit of 24 ppb for an industrial gas turbine. Combusting these coals in a PFBC for power generation may require developing a method to control alkali vapors.
Item Description:Published through SciTech Connect.
01/01/1993.
"anl/cmt/cp-76154"
" conf-930521--6"
"DE93010660"
12. international conference on fluidized-bed combustion, San Diego, CA (United States), 8-13 May 1993.
Lee, S.H.D.; Banerjee, D.D.; Swift, W.M.; Teats, F.G.
Physical Description:Pages: (11 p) : digital, PDF file.

Similar Items