Alkali metal vapor removal from pressurized fluidized-bed combustor flue gas. Annual report, October 1982-September 1983

Technical Report · Fri Jun 01 04:00:00 EDT 1984

OSTI ID:6677948

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

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 capability for both activated bauxite and Emathlite. Emathlite was found to capture NaCl vapor essentially by chemical reactions with the vapor to form water-insoluble compounds, probably sodium aluminosilicates, whereas activated bauxite captures the vapor mainly by physical adsorption as sodium sulfate. The test unit was modified and tested to improve the control of NaCl vaporization in the unit required for the source of alkali vapor in the simulated flue gas. Experimental results are also presented on (1) water leachability of both metallic and nonmetallic ions present in activated bauxite when it is cyclically heat-treated in a simulated PFBC flue gas environment and then leached with distilled water, and (2) the effect of heat-treatment of Emathlite in the simulated PFBC flue gas on the changes of its physical and chemical properties.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6677948
• Report Number(s): ANL/FE-84-9; ON: DE84014834
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas &amp; Particulate Emissions
42 ENGINEERING
424000* -- Engineering-- Pollution Control Equipment-- (1980-1989)
ADSORPTION
ALKALI METALS
CLEANING
COMBUSTORS
ELEMENTS
FLUE GAS
FLUIDIZED-BED COMBUSTORS
FLUIDS
GASEOUS WASTES
GASES
METALS
REMOVAL
SORPTION
VAPORS
WASTES