Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Development and evaluation of improved fine particulate filter systems /
Author Dennis, Richard, ; Dirgo, J. A. ; Grant, M. A.
Other Authors
Author Title of a Work
Dirgo, John A.
Grant, M. A.
CORP Author GCA Corp., Bedford, MA. GCA Technology Div.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher GPO,
Year Published 1985
Report Number EPA/600/7-85/010; GCA-TR-84-17-G; EPA-68-02-3151
Stock Number PB85-177244
Subjects Filters and filtration. ; Fabric filters. ; Fly ash.
Additional Subjects Air pollution control equipment ; Fine ; Mathematical models ; Performance evaluation ; Particles ; Physical properties ; Chemical properties ; Fly ash ; Design criteria ; Assessments ; Industrial wastes ; Combustion products ; Pulse jet fabric filters ; Fabric filters
Library Call Number Additional Info Location Last
NTIS  PB85-177244 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 171 pages : illustrations
The report describes efforts to relate coal and fly ash properties to the fabric filter specific resistance coefficient, K sub 2, and to extend the GCA/EPA fabric filter model to include pulse-jet filter theory. Fly ashes from coal produced in various parts of the U.S., including low sulfur western coals, were examined for physical and chemical properties that might correlate with the magnitude of the K sub 2 parameter. Variation in K sub 2 between fly ashes has been noted, but its specific causes have not been delineated. Results of this work showed a strong correlation between fly ash size, coal ash content, and K sub 2. Electrical charge and method of coal firing exhibited weak correlations. However, coal sulfur content, fusion properties, and chemical structures showed no clear-cut correlations. The relevant literature on pulse-jet filter theory was assessed to develop guidelines for developing a predictive model. The effects of jet size, air volume, and pulse intensity were related to pressure loss. Energy transfer from the jet pulse to the fabric was explored. Finally, predictive equations were developed for estimating total pressure loss over a range of collector design and operating parameters.
Caption title. "March 1985." "EPA-600/7-85/010." "Final report July 1980-August 1984." "GCA-TR-84-17-G." Microfiche.