Electrostatic precipitation of condensed acid mist

Technical Report · Mon Jan 01 04:00:00 EST 1990

DOI:https://doi.org/10.2172/6924046· OSTI ID:6924046

This project addresses the acid mist that is formed by condensation of sulfuric acid vapor in flue gas from coal-fired utility boilers. An acid mist can be formed whenever the flue gas temperature approaches the prevailing acid dew point. This commonly occurs when the gas is subjected to rapid adiabatic cooling in a wet scrubber system for flue gas desulfurization. Acid mists can also sometimes result from unexpected temperature excursions caused by air inleakage, load cycling, and start-up operations. A wet electrostatic precipitator (WESP) is the best control option for acid mist. The mist would blind a fabric filter and attack glass fiber fabrics. A wet ESP is required because the acid would quickly corrode the plates in a conventional dry ESP. The wet ESP also offers the advantages of no rapping reentrainment and no sensitivity to fly ash resistivity. Therefore, this program has been structured around the use of a compact, wet ESP to control acid mist emissions. 7 refs.

• Research Organization: Southern Research Inst., Birmingham, AL (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC22-88PC88867
• OSTI ID: 6924046
• Report Number(s): DOE/PC/88867-T7; SRI-ENV--90-345-6657-21; ON: DE90010969
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800 -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
AIR POLLUTION CONTROL
CONTROL
DOCUMENT TYPES
DROPLETS
ELECTROSTATIC PRECIPITATORS
EQUIPMENT
FLUE GAS
FOSSIL-FUEL POWER PLANTS
GASEOUS WASTES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
PARTICLES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
PROGRESS REPORT
SULFURIC ACID
THERMAL POWER PLANTS
WASTES