Application of synthetic molecular sieve zeolites and silica gel towards the separation of sulfur dioxide from combustion gases
Thesis/Dissertation
·
OSTI ID:5542323
Sulfur dioxide loadings were greatest for the type 13X molecular sieve followed by AW500 molecular sieve. The effect of gas throughput was minimal which suggests that mass transfer was adsorbent side controlling. As gas temperature increased, sulfur dioxide adsorption decreased linearly for 100 percent sulfur dioxide concentration and non-linearly for low concentrations (0.003 percent). The effect of water vapor on sulfur dioxide adsorption capacity was determined by monitoring the effluent gas composition for specified sulfur dioxide-water vapor mixtures. Breakthrough time for sulfur dioxide was found to be an inverse function of the inlet water vapor concentration. For a typical combustion gas stream (8 percent water vapor) the breakthrough time is roughly 10 percent of the water vapor free value. Based on the results obtained, a shallow bed (0.15 m, 0.5 ft) of either type 13X or AW500 molecular sieve removed 5 to 3 times that of activated charcoal for a gas temperature of 57.2/sup 0/C (135/sup 0/F) and low gas pressure drop 4.6 cm H/sub 2/O (1.85 in. H/sub 2/O). Adsorption degradation studies were performed to determine the loss in sulfur dioxide adsorption capacity after adsorbent regeneration.
- OSTI ID:
- 5542323
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
ACTIVATED CARBON
ADSORBENTS
ADSORPTION
CAPACITY
CARBON
CHALCOGENIDES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DESULFURIZATION
EFFICIENCY
ELEMENTS
FLUE GAS
FLUIDS
GASEOUS WASTES
GASES
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MEDIUM TEMPERATURE
MINERALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
REMOVAL
SILICA GEL
SORPTION
SORPTIVE PROPERTIES
SULFUR
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
VAPORS
WASTES
WATER VAPOR
ZEOLITES
010800* -- Coal
Lignite
& Peat-- Waste Management
ACTIVATED CARBON
ADSORBENTS
ADSORPTION
CAPACITY
CARBON
CHALCOGENIDES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DESULFURIZATION
EFFICIENCY
ELEMENTS
FLUE GAS
FLUIDS
GASEOUS WASTES
GASES
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MEDIUM TEMPERATURE
MINERALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
REMOVAL
SILICA GEL
SORPTION
SORPTIVE PROPERTIES
SULFUR
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
VAPORS
WASTES
WATER VAPOR
ZEOLITES