Flue gas desulfurization process
The method is described for reducing sulfur dioxide content of a flue gas resulting from combustion of a sulfur-containing fuel, which method comprises: (a) spraying into the flue gas, at a point where its temperature is between about 120/sup 0/ and about 230/sup 0/ C., an aqueous solution of a calcium salt of a low molecular weight carboxylic acid, the acid being selected from formic and acetic; (b) providing a contact time between the flue gas and droplets resulting from the spraying of at least about 1 second; (c) subsequently separating from the flue gas solids resulting from drying of the droplets and solids resulting from combustion of the fuel; (d) discharging from the separating a flue gas of substantially diminished sulfur dioxide content; and (e) regulating the rate of the spraying relative to the rate of the flue gas such that the temperature of the flue gas at the point of the separating is at least about 10/sup 0/ C. above its saturation temperature.
- Assignee:
- Conoco, Inc., Wilmington, DE
- Patent Number(s):
- US 4600569
- OSTI ID:
- 5509995
- Resource Relation:
- Patent File Date: Filed date 22 Mar 1985
- Country of Publication:
- United States
- Language:
- English
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Flue gas desulfurization process
Flue gas desulfurization process
Related Subjects
FLUE GAS
DESULFURIZATION
SULFUR DIOXIDE
AIR POLLUTION ABATEMENT
ACETIC ACID
AQUEOUS SOLUTIONS
CARBOXYLIC ACIDS
COMBUSTION PRODUCTS
DROPLETS
FLOW RATE
FORMIC ACID
FUELS
HIGH TEMPERATURE
MEDIUM TEMPERATURE
SOLIDS
SPRAYS
SULFUR CONTENT
TIME DEPENDENCE
CHALCOGENIDES
CHEMICAL REACTIONS
DISPERSIONS
GASEOUS WASTES
MIXTURES
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POLLUTION ABATEMENT
SOLUTIONS
SULFUR COMPOUNDS
SULFUR OXIDES
WASTES
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)