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

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.
Authors:
;
Publication Date:
OSTI Identifier:
5599666
Report Number(s):
ANL/FE-81-59
ON: DE82008088
DOE Contract Number:
W-31-109-ENG-38
Resource Type:
Technical Report
Research Org:
Argonne National Lab., IL (USA)
Country of Publication:
United States
Language:
English
Subject:
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