Record Display for the EPA National Library Catalog

RECORD NUMBER: 22 OF 45

OLS Field Name OLS Field Data
Main Title Electric-Field-Enhanced Fabric Filtration of Electrically Charged Flyash.
Author Donovan, R. P. ; Hovis, L. S. ; Ramsey, G. H. ; Ensor, D. S. ;
CORP Author Research Triangle Inst., Research Triangle Park, NC.;Industrial Environmental Research Lab., Research Triangle Park, NC.
Year Published 1982
Report Number EPA-R-808936; EPA-600/J-82-417;
Stock Number PB84-138676
Additional Subjects Air pollution control ; Flyash ; Electric fields ; Air filters ; Performance evaluation ; Electrolysis ; Mass ; Reprints ; Fabric filters ; Baghouses
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB84-138676 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 18p
Abstract
The paper summarizes measurements in which both external electric field (applied by electrodes at the fabric surface) and flyash electrical charge (controlled by an upstream corona precharger) are independent variables in a factorial performance experiment carried out in a laboratory pulse-jet baghouse. The observations suggest that the mechanism by which the external field enhances the performance of the fabric filter is increasing the permeability of the collected flyash layer, while the precharger enhancement mechanism is primarily that of a prefilter. Since the magnitude of the electrical charge/mass of the test flyash does not affect the magnitude of the enhancement induced by the external electric field, the enhancement mechanism by which the external field increases the dust cake permeability is concluded not to be a coulomb capture force.