Characteristics of fly ash from laboratory combustion of pulverized coal

Conference · Tue Sep 01 04:00:00 EDT 1981

OSTI ID:5379801

Parsons, G; Sherman, P; Greif, R; Robben, F

Submicron particles generated from pulverized coal combustion show an enrichment of certain trace elements that may be a health hazard when ingested into the lung. Sieved pulverized coal was entrained in an air/methane/oxygen mixture and burned in an enclosed bunsen type burner fitted with a chimney. Cold secondary air was injected at the chimney exit. The fly ash samples were separated into two size categories (diameter < 2.5 ..mu.. and 2.5 ..mu.. < diameter < 15 ..mu..) and analyzed by x-ray fluorescence. Results show enrichment of several volatile elements in the small size fraction compared to the large size fraction. There is also indication of depletion of some refractory elements. The results support suggestions of several earlier observations which were made on full scale modern boilers.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5379801
• Report Number(s): LBL-13022; CONF-820403-1; ON: DE82001343
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
&amp; Peat-- Properties &amp; Composition
010800 -- Coal
Lignite
&amp; Peat-- Waste Management
016000* -- Coal
Lignite
&amp; Peat-- Health &amp; Safety
AEROSOL WASTES
ALKALI METALS
ALKALINE EARTH METALS
ALUMINIUM
ANTIMONY
ARSENIC
ASHES
CALCIUM
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMIUM
COAL
COMBUSTION
ELEMENTS
ENERGY SOURCES
ENRICHMENT
FLY ASH
FOSSIL FUELS
FRACTIONATION
FUELS
HAZARDS
HEALTH HAZARDS
IRON
MANGANESE
MATERIALS
METALS
NICKEL
NONDESTRUCTIVE ANALYSIS
NONMETALS
OXIDATION
PARTICLE SIZE
POTASSIUM
RESIDUES
RUBIDIUM
SELENIUM
SEMIMETALS
SEPARATION PROCESSES
SIZE
SULFUR
THERMOCHEMICAL PROCESSES
TITANIUM
TRACE AMOUNTS
TRANSITION ELEMENTS
VANADIUM
VOLATILITY
WASTES
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS
ZINC