Joint US/USSR test program for reducing fly ash resistivity

Journal Article · Fri Jun 01 04:00:00 EDT 1979 · J. Air Pollut. Control Assoc.; (United States)

DOI:https://doi.org/10.1080/00022470.1979.10470840· OSTI ID:5845582

Kropp, L I; N, Shmigol I; Chekanov, G S; Oglesby, S Jr; Bickelhaupt, R E

An electrostatic precipitator preceded by a wet scrubber was tested at the Reftinskaya Power Station. The unit collects a high resistivity fly ash from the combustion of low sulfur Ekibastuz coal. The operating parameters of the precipitator were measured as well as the mass emissions and the in-situ electrical resistivity of the fly ash. Density, particle size distribution, electrical resistivity, and chemical composition were determined for collected samples of the fly ash. The fly ash was also characterized by x-ray diffraction and scanning electron microscopy. When a centrifugal wet wall scrubber was installed ahead of the electrostatic precipitator, the temperature of the flue gas entering the precipitator was decreased and the moisture content increased. The electrical resistivity of the fly ash ws attenuated a decade, but not enough to overcome the adverse effects of back corona in the precipitator. Lowering the flue gas temperature to about 85/sup 0/C by the addition of a venturi scrubber ahead of the centrifugal scrubber reduced the electrical resistivity of the fly ash another decade and allowed the operation of the precipitator without back corona.

• Research Organization: Nauchno-Issledovatel skiy Inst. po Promyshiennoy, Moscow, USSR
• OSTI ID: 5845582
• Journal Information: J. Air Pollut. Control Assoc.; (United States), Journal Name: J. Air Pollut. Control Assoc.; (United States) Vol. 29:6; ISSN JPCAA
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200200 -- Fossil-Fueled Power Plants-- Waste Management
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOL WASTES
CARBONACEOUS MATERIALS
CENTRIFUGATION
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL
COHERENT SCATTERING
COMBUSTION
DATA
DATA COMPILATION
DATA FORMS
DENSITY
DIFFRACTION
DISTRIBUTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
ELECTROSTATIC PRECIPITATORS
ENERGY SOURCES
EQUIPMENT
EUROPE
FLY ASH
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
GRAPHS
INFORMATION
MICROSCOPY
NUMERICAL DATA
OXIDATION
PARTICLE SIZE
PERFORMANCE TESTING
PHYSICAL PROPERTIES
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
SCANNING ELECTRON MICROSCOPY
SCATTERING
SCRUBBERS
SEPARATION PROCESSES
SIZE
TEMPERATURE DEPENDENCE
TESTING
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
USSR
WASTES
X-RAY DIFFRACTION