A study on the Emission Characteristics of FPM and CPM in Power Plants

As people have become more aware of fine particulate matter (PM2.5) recently, there have been growing concerns over the harmful impact of PM2.5 on human health. Since stationary sources are a major source of PM2.5 emission, measures to manage and reduce PM2.5 emission from the stationary sources need to be taken. PM2.5 primary emissions from stationary sources contain a filterable and condensable portion. Filterable PM are particles directly emitted from a stack in a solid or liquid form at stack conditions and captured in the filter of a sampling train. Condensable PM is a material that stays as gas within the stack but is condensed, diluted and/or cooled into solid or liquid particles in the ambient air immediately after discharge from the stack. In this study, the emission characteristics of filterable and condensable PM from power plants are investigated. The average filterable PM2.5 concentration from two coal-fired power plants ranged from 1.85 to 2.02 mg/m3 and that from an LNG power plant was 0.02 mg/m3. The average condensable PM2.5 concentrations from the coal-fired power plants and the LNG plant were 9.08-12.20 mg/m3 and 1.02 mg/m3, respectively.