Fly-ash resistivity prediction improvement with emphasis on sulfur trioxide. Final report, July 1983-July 1984

Technical Report · Sat Mar 01 04:00:00 EST 1986

OSTI ID:5709100

Bickelhaupt, R E

The report gives results of research to improve and extend the capabilities of a technique for predicting fly-ash resistivity from the ultimate coal analysis and the coal ash composition. Emphasis was on determining the quantitative effect of adsorbed sulfuric acid vapor on resistivity. Ten fly-ash samples were used in order to have a reasonable spectrum of ash composition. Resistivity was determined as a function of temperature in air environments containing 5 and 10% water. Isothermal resistivity was measured for each ash at three temperature levels using three concentrations of sulfur trioxide (SO/sub 3/). With respect to resistivity predictions for conditions not including SO/sub 3/, the present data did not suggest modifying Model I of the resistivity prediction. However, the much larger and improved data base recently acquired with respect to environments containing SO/sub 3/ has required a new approach for predicting the effect. The report presents these data and illustrates Model II of the resistivity prediction.

• Research Organization: Southern Research Inst., Birmingham, AL (USA)
• OSTI ID: 5709100
• Report Number(s): PB-86-178126/XAB; SORI-EAS-85-841
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
AEROSOL WASTES
ASHES
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
COMBUSTION PRODUCTS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY SOURCES
FLY ASH
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MATERIALS
MATHEMATICAL MODELS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWER PLANTS
RESIDUES
SULFUR COMPOUNDS
SULFUR OXIDES
SULFUR TRIOXIDE
SULFURIC ACID
THERMAL POWER PLANTS
WASTES