Diatomaceous earth and activated bauxite used as granular sorbents for the removal of sodium chloride vapor from hot flue gas

Technical Report · Tue Jan 01 00:00:00 EST 1980

DOI:https://doi.org/10.2172/5657303· OSTI ID:5657303

Lee, S. H.D.; Swift, W. M.; Johnson, I.

Diatomaceous earth and activated bauxite were tested as granular sorbents for use as filter media in granular-bed filters for the removal of gaseous alkali metal compounds from the hot (800/sup 0/C) flue gas of PFBC. Tests were performed at atmospheric pressure, using NaCl vapor transported in relatively dry simulated flue gas of PFBC. Either a fixed-bed combustor or a high-temperature sorption test rig was used. The effects of sorbent bed temperature, superficial gas velocity, gas hourly space velocity, and NaCl-vapor concentration in flue gas on the sorption behavior of these two sorbents and their ultimate sorption capacities were determined. Both diatomaceous earth and activated bauxite were found to be very effective in removing NaCl vapor from flue gas. Preliminary cost evaluations showed that they are economically attractive as granular sorbents for cleaning alkali vapor from simulated flue gas.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 5657303
• Report Number(s): ANL/CEN/FE-79-18
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
42 ENGINEERING
ALKALI METAL COMPOUNDS
REMOVAL
BAUXITE
DIATOMACEOUS EARTH
SORPTIVE PROPERTIES
HOT GAS CLEANUP
GRANULAR BED FILTERS
COAL
FLUE GAS
FLUIDIZED-BED COMBUSTION
MEDIUM PRESSURE
ALUMINIUM ORES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COMBUSTION
ENERGY SOURCES
FILTERS
FOSSIL FUELS
FUELS
GASEOUS WASTES
MECHANICAL FILTERS
MINERALS
ORES
OXIDATION
PURIFICATION
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
WASTES
010800* - Coal
Lignite
& Peat- Waste Management
421000 - Engineering- Combustion Systems
014000 - Coal
Lignite
& Peat- Combustion