Mineral matter and trace-element vaporization in a laboratory-pulverized coal combustion system

Montana lignite was burned at temperatures of 2050 K and 2450 K to determine the composition and sizes of the flyash produced. The flyash revealed a bimodal size distribution with an enriched submicron fraction from the volatile trace species. As combustion temperature rose, the amount of submicron...

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Veröffentlicht in:	Environ. Sci. Technol.; (United States) 1982-11, Vol.16 (11), p.776-781
Hauptverfasser:	Quann, Richard J, Neville, Matthew, Janghorbani, Morteza, Mims, Charles A, Sarofim, Adel F
Format:	Artikel
Sprache:	eng
Schlagworte:	01 COAL, LIGNITE, AND PEAT 010800 - Coal, Lignite, & Peat- Waste Management 014000 - Coal, Lignite, & Peat- Combustion AEROSOL WASTES ASHES BROWN COAL CARBONACEOUS MATERIALS CHEMICAL COMPOSITION CHEMICAL REACTIONS COAL COMBUSTION CORRELATIONS DISTRIBUTION ELEMENTS ENERGY SOURCES ENRICHMENT EVAPORATION FLY ASH FOSSIL FUELS FUELS LIGNITE MATERIALS MATTER MINERALS OXIDATION PARTICLE SIZE PHASE TRANSFORMATIONS RESIDUES SIZE TEMPERATURE EFFECTS THERMOCHEMICAL PROCESSES TRACE AMOUNTS VOLATILE MATTER VOLATILITY WASTES
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Beschreibung
Zusammenfassung:	Montana lignite was burned at temperatures of 2050 K and 2450 K to determine the composition and sizes of the flyash produced. The flyash revealed a bimodal size distribution with an enriched submicron fraction from the volatile trace species. As combustion temperature rose, the amount of submicron aerosol also increased. Enrichment in more volatile species of flyash was found to be a process of vaporization and recondensation of minerals.
ISSN:	0013-936X 1520-5851
DOI:	10.1021/es00105a009