Alkali-metal-vapor removal from pressurized fluidized-bed combustor flue gas. Annual report, October 1980-September 1981

Technical Report · Fri Jan 01 00:00:00 EST 1982

OSTI ID:5599666

Johnson, I; Lee, S H.D.

This work supports the program to develop methods for the cleanup of high-temperature, high-pressure combustion gases from pressurized fluidized-bed coal combustors so that the cleaned gases can be used to power downstream gas turbines. Data are presented in this report on the use of activated bauxite in a granular bed filter for the removal of gaseous NaCl from hot (800/sup 0/C), pressurized (less than or equal to 8 atm), wet simulated PFBC flue gas. Also, the sorption mechanisms are discussed. Greater than 99.9% NaCl vapor capture was achieved. Also reported are (1) the effects of several operating variables on the rate of leaching of NaCl that had been adsorbed on activated bauxite and (2) the volatility of alkali metal compounds present as impurities in activated bauxite. Finally, the preliminary estimate of the cost of using activated bauxite as a filter medium for the control of alkali vapors from PFBC flue gas was updated; a conceptual design of a fixed granular-bed filter was presented; and the energy needs and their costs for operating the filter in (a) the once-through and (b) the sorbent-regeneration modes were compared.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 5599666
• Report Number(s): ANL/FE-81-59; ON: DE82008088
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
42 ENGINEERING
ALKALI METALS
REMOVAL
BAUXITE
CHEMICAL REACTIONS
HEAT TREATMENTS
PURIFICATION
FLUE GAS
HOT GAS CLEANUP
GRANULAR BED FILTERS
DESIGN
PERFORMANCE
COST
SODIUM CHLORIDES
COAL
CORROSION
FLUIDIZED-BED COMBUSTION
GAS TURBINES
MEDIUM PRESSURE
MICROSTRUCTURE
POROSITY
REGENERATION
SORPTIVE PROPERTIES
VAPORS
ALKALI METAL COMPOUNDS
ALUMINIUM ORES
CARBONACEOUS MATERIALS
CHLORIDES
CHLORINE COMPOUNDS
COMBUSTION
CRYSTAL STRUCTURE
ELEMENTS
ENERGY SOURCES
FILTERS
FLUIDS
FOSSIL FUELS
FUELS
GASEOUS WASTES
GASES
HALIDES
HALOGEN COMPOUNDS
MACHINERY
MATERIALS
MECHANICAL FILTERS
METALS
ORES
OXIDATION
SODIUM COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
WASTES
010800* - Coal
Lignite
& Peat- Waste Management
014000 - Coal
Lignite
& Peat- Combustion
200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
421000 - Engineering- Combustion Systems