Technical Bulletin No. 0064: Comparison of Source Particulate Emission Measurement Methods at Lime Kilns and Smelt Dissolving Tank Vent Stacks (AQTB)

The attached technical bulletin was prepared by Mr. Andrew J. Kutyna, Research Engineer at the National Council's Southern Regional Center, and is based on field investigations conducted by him and Rodney Schmall, Research Engineer, West Coast Regional Center. The studies described were initiated in response to member mill representatives' requests for information on suitable procedures for measuring source particulate matter emissions in the pulp and paper industry. The field investigations described in this technical bulletin were confined to the measurement of particulate matter emissions from kraft process sources known to be low in SO2, e.g., the lime kiln and smelt dissolving tank vent stacks. The source particulate sampling and analysis procedures chosen for comparison on these sources, which normally contain varying amounts of entrained water, were (a) the EPA particulate sampling method which calls for heating of the gas stream and evaporation of any moisture present before the sample is filtered to capture particulate matter, and (b) a simplified procedure which relies on impingers for the capture of particulate emissions. The investigation demonstrated that the simplified impinge-based procedure is in fact a suitable alternate for the filtration section of the EPA sampling train, which is one of the few methods available for measuring particulate matter which exists as particulate matter at stack conditions at these two sources.