||Fine Particle Emissions from Residual Fuel Oil Combustion: Characterization and Mechanisms of Formation.
Linak, W. P. ;
Miller, C. A. ;
Wendt, J. O. ;
||Environmental Protection Agency, Research Triangle Park, NC. National Risk Management Research Lab.
||4 Aug 2000
Fuel oil ;
Particle size ;
Component reports ;
Pm(Particulate matter) ;
Psd(Particulate size distribution)
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
The characteristics of particulate matter (PM) emitted from residual fuel oil combustion in two types of combustion equipment were compared. A small commercial 732 kW rated fire-tube boiler yielded a weakly bimodal particulate size distribution (PSD) with over 99% of the mass contained in a broad coarse mode and only a small fraction of the mass in an accumulation mode consistent with ash vaporization. Bulk samples collected and classified by a cyclone indicate that 30% to 40% of the total particulate emissions were less than 2.5mum aerodynamic diameter (PM2.5). The coarse mode PM was rich in char, indicating relatively poor carbon burnout, although calculated combustion efficiencies exceeded 99%. This characteristic behavior is typical of small fire-tube boilers. Larger, utility-scale units firing residual oil were simulated using an 82 kW rated laboratory-scale refractory-lined combustor. Particulate matter emissions from this unit were in good agreement with published data including published emission factors. These data indicated that the refractory-lined combustor produced less total but more fine particulate emissions, as evident from a single unimodal PSD centered at.