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Removal of alkali vapors by a fixed granular-bed sorber using activated bauxite as a sorbent

Conference ·
OSTI ID:6141917
; ;
Studies have been conducted to develop a fixed granular-bed sorber for the removal of alkali vapors in a pressurized fluidized-bed combustion (PFBC) combined-cycle system. A laboratory-scale pressurized alkali vapor sorption test unit was used to characterize activated bauxite, the most effective sorbent identified earlier, for its alkali vapor sorption capability in a gas stream with temperature (less than or equal to 900/sup 0/C), pressure (10 atm absolute), and composition closely simulating the actual PFBC flue gas. A scale-up of laboratory tests is being conducted in a 15.2-cm-dia (6-in.-dia) PFBC system to demonstrate the granular-bed sorber concept. The NaCl-vapor sorption chemistry of activated bauxite is described. The extent of alkali-vapor evolution from the activated bauxite bed itself is discussed, along with an evaluation of the significance of its alkali vapor contribution to a downstream gas turbine. Details of the design of a high-temperature/high-pressure alkali sorber system for the demonstration of the sorber are presented. 15 references, 6 figures, 3 tables.
Research Organization:
Argonne National Lab., IL (USA)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
6141917
Report Number(s):
CONF-850351-3; ON: DE85006202
Country of Publication:
United States
Language:
English

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ADSORBENTS
ALKALI METAL COMPOUNDS
ALUMINIUM ORES
BAUXITE
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COAL
COMBUSTION
COMBUSTION PRODUCTS
DATA
ENERGY SOURCES
EXPERIMENTAL DATA
FILTERS
FLUIDIZED-BED COMBUSTION
FLUIDS
FOSSIL FUELS
FUELS
GAS TURBINES
GASES
GRANULAR BED FILTERS
HALIDES
HALOGEN COMPOUNDS
HOT GAS CLEANUP
INFORMATION
MACHINERY
MATERIALS
MECHANICAL FILTERS
MEDIUM PRESSURE
NUMERICAL DATA
ORES
OXIDATION
PARTICLES
PARTICULATES
PERFORMANCE
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
PURIFICATION
REGENERATION
REMOVAL
SODIUM CHLORIDES
SODIUM COMPOUNDS
TEST FACILITIES
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
VAPORS