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- W2915139919 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 » 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.« less" @default.
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- W2915139919 date "1983-03-01" @default.
- W2915139919 modified "2023-09-23" @default.
- W2915139919 title "Alkali-metal-vapor removal from pressurized fluidized-bed-combustor flue gas. Annual report, October 1981-September 1982" @default.
- W2915139919 hasPublicationYear "1983" @default.
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