Development of Particle Size Test Methods for Sampling High Temperature and HighMoisture Source Effluents

摘要

Source sampling equipment was developed to determine the particle sizedistribution of effluents that are high in temperature or high in moisture. Modifications of cascade impactor particle sizing methods were developed for sampling. Large drops and/or particles are collected in adaptations of the currently used right angle precollector. For wet stream sampling, the remaining droplets are evaporated to dryness by passing through a heated inlet tube to the impactor. For high temperature sampling, the stack gases are collected by passing through an air-cooled tube, to a temperature at which standard impactor hardware can be used. Results of demonstration tests are also reported. The wet source tested was a stack downstream of a scrubber used to control emissions from a medical waste incinerator, and the high temperature source tested was the exhaust of a flare burning landfill gas.