Comparison of Coal Ash Particle Size Distributions from Berner and Dekati Low Pressure Impactors

Autor:	Wayne Seames, Chunmei Wang, Jason Hrdlicka, Gregory Fix, Mandar Gadgil
Rok vydání:	2007
Předmět:	business.industry Chemistry Mineralogy Coal combustion products Particulates Pollution Fly ash Particle-size distribution Measuring instrument Combustor Environmental Chemistry General Materials Science Coal Particle size business
Zdroj:	Aerosol Science and Technology. 41:1049-1062
ISSN:	1521-7388 0278-6826
DOI:	10.1080/02786820701697788
Popis:	This article presents the differential mass size distributions of coal combustion particulate matter (PM) determined with the Berner low-pressure impactor (BLPI, Hauke Model 25-4/0.015) and a newer generation of low pressure impactor, the Dekati low-pressure impactor (DLPI, Dekati Ltd Model 6281). The collection characteristics of the BLPI and DLPI are compared and cutoff diameters are calculated. Samples were collected in the post-combustion zone of a 19 kW vertical downflow combustor from two coal types. Both BLPI and DLPI represent a tri-modal distribution and give statistically similar characterizations of the coal ash particle size distribution. Distributions generated from DLPI data have higher fractions of submicron particles compared to those generated from BLPI data. The DLPI's two additional stages may provide greater resolution in the submicron region than the BLPI.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6b08bd9086972a19f55062c02b1ef8d2 https://doi.org/10.1080/02786820701697788 Zobrazit plný text záznamu