Mineral characterization of fluidized-bed combustion aerosol ash--Montana Rosebud sub-bituminous coal

Technical Report · Sat Apr 01 00:00:00 EST 1978

OSTI ID:5035843

Mazza, M H; Green, D A; Paris, M W; Newton, G J

Bulk and aerosol flyash samples from the MERC 18'' atmospheric fluidized bed combustor have been characterized by three analytical techniques: X-ray fluorescence spectrometry (XRF) for elemental analysis, x-ray powder diffraction (XRD) for mineral identification and scanning electron microscopy/x-ray emission (SEM) for regional and surface analysis. The combustion tests were carried out on Montana Rosebud sub-bituminous coal with limestone added as a sulfur sorbent. Bulk samples were removed from the bed and particle collecting devices. Aerosol sampling from the effluent stream was conducted by the Lovelace Inhalation Toxicology Research Institute. The results of these analyses indicate that (1) the fluidized-bed flyash is not composed of spherical, homogeneous particles, but irregularly shaped particles; (2) particle size distributions of the aerosols may exhibit multimodal behavior; (3) excess calcium from the bed may react with the aluminosilicate flyash to form crystalline calcium aluminosilicates; and (4) calcium sulfate predominates in the small particles.

• Research Organization: Department of Energy, Morgantown, W.Va. (USA). Morgantown Energy Research Center
• OSTI ID: 5035843
• Report Number(s): MERC/TPR-78/1
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
FLUIDIZED-BED COMBUSTION
FLY ASH
ELECTRON MICROSCOPY
SAMPLING
X-RAY DIFFRACTION
X-RAY FLUORESCENCE ANALYSIS
MINERALS
CHEMICAL REACTIONS
AEROSOLS
CALCIUM SULFATES
CASCADE IMPACTORS
ELECTROSTATIC PRECIPITATORS
FILTERS
ILLITE
KAOLINITE
LIMESTONE
PARTICLE SIZE
PYRITE
QUARTZ
AEROSOL WASTES
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CALCIUM COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL ANALYSIS
CLAYS
COHERENT SCATTERING
COLLOIDS
COMBUSTION
DIFFRACTION
DISPERSIONS
ENERGY SOURCES
EQUIPMENT
FOSSIL FUELS
FUELS
IRON COMPOUNDS
IRON SULFIDES
MICROSCOPY
NONDESTRUCTIVE ANALYSIS
ORES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
PYRITES
RESERVOIR ROCK
ROCKS
SCATTERING
SEDIMENTARY ROCKS
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SIZE
SOLS
SULFATES
SULFIDES
SULFUR COMPOUNDS
SULFUR ORES
TRANSITION ELEMENT COMPOUNDS
WASTES
X-RAY EMISSION ANALYSIS
010600* - Coal
Lignite
& Peat- Properties & Composition