Size distribution of fine particulate emissions from a coal-fired power plant

Schmidt, E.; Gieseke, J.A.; Allen, J.M.

doi:10.1016/0004-6981(76)90115-3

Cited by 32 publications

(16 citation statements)

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“…The peak reported by McCain disappears when size distribution is plotted on a mass basis. Sharper submicron peaks were observed when measurements were made by an EAA (Schmidt et al, 1976;Ensor et al, 1979;Flagan and Taylor, 1980;Markowski et a]., 1980). These data retained the peaks when plotted on a mass basis.…”

Section: Submicron Ash Fractionmentioning

confidence: 60%

“…(1975), was found to predict an order of magnitude larger number of particles with a smaller mean diameter (Figure 4). Flagan (1979) later included accelerated coagulation due to interparticle dispersion and nonhomogeneous 0 Schmidt et al (1976) 0 Theoretical size distribution (Flagan and Friedlander, 1978) A Flagan and Taylor (1981 ) 31 0.1 1.0 Particle Diameter D pm mixing, which reduced the discrepancy but still predicted larger than observed fine particle densities. Additional recent data (Ensor et al, 1979(Ensor et al, , 1981a) also showed similar discrepancies between theory and experimental observations.…”

Section: Vuporizution-condensutionmentioning

confidence: 99%

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Coal Combustion Aerosol Formation Mechanisms: A Review

Damle

Ensor

Ranade

1982

Aerosol Science and Technology

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The composition and size distribution of particles data regarding fly ash size distribution and elemental emitted by coal combustion sources depend upon concentrations in various size fractions were analyzed. various mechanisms leading to their formation. A These data were qualitatively compared with theoretical review of current ideas about possible mechanisms for model predictions to indicate the relative contributions formation of combustion aerosols is presented. Available of various mechanisms in the formation of aerosols.

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Section: Submicron Ash Fractionmentioning

confidence: 60%

Section: Vuporizution-condensutionmentioning

confidence: 99%

Coal Combustion Aerosol Formation Mechanisms: A Review

Damle

Ensor

Ranade

1982

Aerosol Science and Technology

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“…The correlation between NO x and submicron particle formation is not as well established for these conditions, since conversion of fuel nitrogen to NO x is controlled by staging the air, and NO x formation does not necessarily correlate with temperature. [183][184][185] Metals may partition into three major emission streams: the stack, the bottom ash, and the fly ash collected during gas cleaning. An example of this type of data, summarized in Table 3, shows the points in the power plant process where As, Cr, Hg, and Se are removed and the fraction of that element in the raw coal that is emitted from the stack.…”

Section: Coal-fired Steam Generation Boilersmentioning

confidence: 99%

Combustion Aerosols: Factors Governing Their Size and Composition and Implications to Human Health

Lighty

Veranth

Sarofim

2000

Journal of the Air & Waste Management Association

1,007

600

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Particulate matter (PM) emissions from stationary combustion sources burning coal, fuel oil, biomass, and waste, and PM from internal combustion (IC) engines burning gasoline and diesel, are a significant source of primary particles smaller than 2.5 µm (PM 2.5 ) in urban areas. Combustion-generated particles are generally smaller than geologically produced dust and have unique chemical composition and morphology. The fundamental processes affecting formation of combustion PM and the emission characteristics of important applications are reviewed. Particles containing transition metals, ultrafine particles, and soot are emphasized because these types of particles have been studied extensively, and their emissions are controlled by the fuel composition and the oxidant-temperature-mixing history from the flame to the stack. There is a need for better integration of the combustion, air pollution control, atmospheric chemistry, and inhalation health research communities. Epidemiology has demonstrated that susceptible individuals are being harmed by ambient PM. Particle surface area, number of ultrafine particles, bioavailable transition metals, polycyclic aromatic hydrocarbons (PAH), and other particle-bound organic compounds are suspected to be more important than particle mass in determining the effects of air pollution. Time-and size-resolved PM measurements are needed for testing mechanistic toxicological hypotheses, for characterizing the relationship between combustion operating conditions and transient emissions, and for source apportionment studies to develop air quality plans. Citations are provided to more specialized reviews, and the concluding comments make suggestions for further research.

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“…Nettleton, 1979). Schmidt et al (1976) report an insignificant effect of NO, control by staged combustion on the total particulate mass emissions. McElroy and Carr (1981), in studying submicrometer aerosol emissions from coal-fired utility plants, found a decrease in these emissions when NO, emissions were low.…”

Section: Introductionmentioning

confidence: 99%

Effect of Coal Type and Residence Time on the Submicron Aerosol Distribution from Pulverized Coal Combustion

Linak

Peterson

1984

Aerosol Science and Technology

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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 sue distributions were measured at various positions within the convection section, and temperature and gas compositions were measured throughout. The evolution of the submicron particle size distribution within the convection 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, staged combustion of the lignites caused a definite increase in the submicron aerosol volume. Vapor enhancement due to a localized reducing atmosphere, yhich would effect coals of higher ash volatility, is thought to explain this behavior.

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Size distribution of fine particulate emissions from a coal-fired power plant

Cited by 32 publications

References 1 publication

Coal Combustion Aerosol Formation Mechanisms: A Review

Coal Combustion Aerosol Formation Mechanisms: A Review

Combustion Aerosols: Factors Governing Their Size and Composition and Implications to Human Health

Effect of Coal Type and Residence Time on the Submicron Aerosol Distribution from Pulverized Coal Combustion

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