Some Comparisons of Simultaneous Stack Gas Particulate Determinations Using the ASME and EPA Methods

Abstract

Simultaneous determinations of particulate concentrations were made by the ASME and EPA methods on flue gas from a test furnace burning about 75 lb/hr of low-sulfur North Dakota lignite. Comparisons were made at dust concentration levels of about 0.5 and 0.01 grain per standard cu ft. At the higher dust concentration the two methods checked within about 5 percent and the impinger residues were not significant. At the low dust concentration the EPA complete train generally gave values from 50 to 200 percent greater than the ASME method and the impinger residues constituted a substantial part of the total weight. Attempts were made to identify the various residues from the EPA impinger train.