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Author
Linak, W. P. | Peterson, T. W.
Title
Effect of Coal Type and Residence Time on the Submicron Aerosol Distribution From Pulverized Coal Combustion.
Coporate
Arizona Univ., Tuscon
Report
WSS/CI 83-15,
Book or Conf
Combustion Institute/Western States Section. Spring Meeting, 1983. April 11-12, 1983, 25 p., 1983
Keywords
aerosols
Abstract
Three types of pulverized coal were burned in a laboratory furnace under various combustion configurations. Pulverized samples of Utah bituminous, Beulah (North Dakota) lignite and Texas lignite coals were burned at a rate of 2.5 kg/hr in a laboratory furnace. Aerosol size distrubitions were measured at various positions within the convenction section, and temperature and gas compositions were measured throughout. The evolution of the submicron particle size distrubiton within the convenction section for the three coals was similar, although the location of the initial particle mode at the convection section inlet varied with coal type. While staged combustion of Utah bituminous coal had a variable effect on the volume of submicron aerosol produced, stged combustion of the lignites caused a definite increase in the submicron aerosol volume. Vapor enhancement due to a localized reducing atmosphere, which would effect coals of higher ash volatility, is thought to explain this behavior.