Evaluation of some regenerable sulfur dioxide absorbents for flue gas desulfurization
Measurements were made of the vapour pressure of SO/sub 2/ above aqueous solutions of citric acid, glycollic acid, 1-methyl-2-pyrrolidone and ethylenediamine, as well as above pure tri-n-butyl phosphate, 1-methyl-2-pyrrolidone, and water to evaluate their possible application as absorbents for regenerable flue gas desulphurization systems. The results were used to estimate the steam rate and principal costs of processes using 11 of the absorbents. For SO/sub 2/ absorption followed by indirect steam stripping, a 9.75% ethylenediamine solution had the lowest steam rate. The next lowest were for pure 1-methyl-2-pyrrolidone and citric acid solution. However, the cost of losses of ethylenediamine vapour in the stack were excessive, indicating that a high boiling point amine would be preferable.
- OSTI ID:
- 5202719
- Journal Information:
- J. Air Pollut. Control Assoc.; (United States), Vol. 33:11
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ADSORBENTS
PERFORMANCE TESTING
FLUE GAS
DESULFURIZATION
CITRIC ACID
COST
EVALUATION
GLYCOLIC ACID
ORGANIC COMPOUNDS
PYRROLIDONES
REGENERATION
SULFUR DIOXIDE
VAPOR PRESSURE
AMIDES
AZOLES
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
GASEOUS WASTES
HETEROCYCLIC COMPOUNDS
HYDROXY ACIDS
LACTAMS
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PYRROLES
SULFUR COMPOUNDS
SULFUR OXIDES
TESTING
THERMODYNAMIC PROPERTIES
WASTES
010800* - Coal
Lignite
& Peat- Waste Management