Electrostatic precipitation of condensed acid mist
Southern Research Institute is developing a compact, wet electrostatic precipitator (WESP) to control acid mist missions from high-sulfur coal combustion. The WESP is being developed as a retrofit technology for existing coal-fired power plants, particularly those equipped with wet flue gas desulfurization (FGD) scrubbers. Acid mist emissions can be a significant problem at these facilities because the sulfuric acid vapor in the flue gas is converted to a very fine mist that is not collected in the scrubber system. Conventional mist eliminators are not adequate in this application due to the very fine size of the mist droplets. The potential for corrosion also makes it difficult to use a fabric filter or a conventional, dry ESP in this application. Therefore, this research project has been structured around the development of a compact WESP that could be retrofit on top of an existing scrubber or within an existing flue gas duct. This paper describes the development and testing of a prototype WESP for the utility acid mist application. Testing was conducted with combustion of sulfur-doped gas to simulate the acid mist alone, and with a combination of coal and sulfur-doped gas to simulate the mixture of acid mist and fly ash downstream from a scrubber. The performance of the WESP test unit was modeled using two different cylindrical-geometry computer models: a current-seeking'' model and a current-specific'' model. 8 refs., 15 figs., 7 tabs.
- Research Organization:
- Southern Research Inst., Birmingham, AL (USA)
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- AC22-88PC88867
- OSTI ID:
- 7262106
- Report Number(s):
- DOE/PC/88867-T5; SRI-ENV-89-1054-6657-16; ON: DE90006171
- Country of Publication:
- United States
- Language:
- English
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Electrostatic precipitation of condensed acid mist
Electrostatic precipitation of condensed acid mist
Related Subjects
01 COAL, LIGNITE, AND PEAT
ELECTROSTATIC PRECIPITATORS
PERFORMANCE
SULFURIC ACID
EMISSION
AEROSOLS
FLUE GAS
FOSSIL-FUEL POWER PLANTS
POLLUTION CONTROL
PROGRESS REPORT
RETROFITTING
VAPORS
COLLOIDS
CONTROL
DISPERSIONS
DOCUMENT TYPES
EQUIPMENT
FLUIDS
GASEOUS WASTES
GASES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
SOLS
THERMAL POWER PLANTS
WASTES
200202* - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
010800 - Coal
Lignite
& Peat- Waste Management