Flue gas conditioning for improved particle collection in electrostatic precipitators

Technical Report · Tue Jan 14 04:00:00 EST 1992

DOI:https://doi.org/10.2172/5794372· OSTI ID:5794372

Durham, M D

Electrostatic precipitators (ESP) serve as the primary air pollution control device for the majority of coal-fired utility boilers in the Eastern and Midwestern regions of the United States. Since most of these ESPs are collecting flyash generated from medium- and high-sulfur coal, they are not experiencing operational limitations which are common when treating high-resistivity particles and are performing at an efficiency that is as high as could be expected. However, there are indications that the collection efficiency could be improved with flue gas conditioning. Conditioning is commonly used for solving operational problems associated with high-resistivity dusts. The purpose of conditioning for low- and moderate-resistivity applications is to increase the adhesive characteristics of the dust. Flue gas conditioning that increases particle adhesion has the potential to improve collection efficiency because a large percentage of particulate emissions from a well-performing ESP is due to reentrainment. Improved ESP performance should result if particle reentrainment could be reduced by making the particles more adhesive. This could produce a significant reduction in emissions from and ESP from the Following mechanisms: reduced erosion-type reentrainment; reduced rapping emissions; reduced hopper reentrainment; increased agglomeration of fine particles.

• Research Organization: ADA Technologies, Inc., Englewood, CO (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-91PC90364
• OSTI ID: 5794372
• Report Number(s): DOE/PC/90364-T1; ON: DE92008188
• 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
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ADHESION
DOCUMENT TYPES
EFFICIENCY
ELECTROSTATIC PRECIPITATORS
EQUIPMENT
FLUE GAS
GASEOUS WASTES
HOT GAS CLEANUP
PARTICLES
PARTICULATES
POLLUTION CONTROL EQUIPMENT
PROGRESS REPORT
PURIFICATION
REMOVAL
WASTES