Regenerative method removal of sulfur dioxide from stack gases
Sulfur dioxide is removed from stack gases by absorption in an aqueous medium, the preferred embodiment containing a chemical oxidant which generates hydrogen peroxide on a demand that equals the rate sulfur dioxide is absorbed into the medium whereby the absorbed sulfur dioxide is converted to sulfate form. The converted sulfur dioxide is removed in the form of an alkaline earth metal sulfate precipitate and spent oxidant is regenerated for reuse. In the other illustrated embodiments, the aqueous medium is maintained acidic from the start-up of the system. Barium perodixe is the preferred oxidant and acts both as oxidant and precipitant. Alternately, the oxidant and precipitant may be separate compounds.
- Assignee:
- Georgia Tech. Research Institute
- Patent Number(s):
- US 4031195
- OSTI ID:
- 5752931
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cyclic process for the removal of sulfur dioxide and the recovery of sulfur from gases
Treatment of sulfur oxides with aqueous glyoxylic acid solutions
Related Subjects
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
AIR POLLUTION CONTROL
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DESULFURIZATION
ELEMENTS
EQUIPMENT
FLUE GAS
FOSSIL-FUEL POWER PLANTS
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
MANAGEMENT
METALS
OXIDES
OXYGEN COMPOUNDS
PEROXIDES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
STACK DISPOSAL
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES