Combustion is a significant source of fine particulate matter emissions, and heavy oil combustion is suspected of producing particulate emissions with potentially significant toxicity.
This paper is concerned with the characterization of particulate emissions from a practical heavy fuel oils boiler,The purpose of the study was to identify possible mechanisms that might relate both the combustion process and the fuel burned to the size segregated characterization of the fine particles formed, and consequently to their propensity to cause pulmonary injury.
The data presented, therefore, help suggest specific fundamental issues which define directions for future research in this area. In this initial study, samples of particulate matter were taken from the stack of a commercial 732kW (2.5 x 10° Btu/hr) rated fire tube boiler burning four different heavy fuel oils, including two grades and three sulfur contents. Submicron and superrnicron particle size distributions (PSDs) were measured using an in-stack cascade impactor, a scanning mobility particle sizer (SMPS), and an insitu light scattering system.