Record Display for the EPA National Library Catalog


Main Title Collection of Fly Ash with High Electrical Resistivity in a Pilot Plant Electrostatic Precipitator Preceded by the EPA/SoRI Precharger.
Author Sparks, L. E. ; Ramsey, G. H. ; Daniel, B. E. ;
CORP Author Industrial Environmental Research Lab., Research Triangle Park, NC.
Year Published 1979
Stock Number PB80-181993
Additional Subjects Air pollution control equipment ; Electrostatic precipitators ; Particles ; Fly ash ; Combustion products ; Electrical resistivity ; Industrial wastes ; Capitalized costs ; Cost analysis ; Field tests ; Performance evaluation ; Pilot plants ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB80-181993 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 5p
The paper describes experiments designed to demonstrate the effectiveness of a precharger--part of a novel electrostatic precipitator (ESP)--and to provide information needed to design a required downstream collector. The paper presents the first published data demonstrating the effect of the precharger on particle collection in an ESP. Graded penetration curves indicate that rapping reentrainment may be a problem. The penetration of large particles is higher than expected and is probably due to reentrainment. An optimized downstream collector should minimize the rapping reentrainment problem. The paper concludes that the precharger more than doubles the specific collector area of the ESP. Initial capital cost estimates indicate that the precharger will cost about a third to half the cost of one conventional electrical section. A conventional electrical section might increase the SCA of a small ESP, such as used for high sulfur coal, by as much as 33% and the SCA of a large ESP, such as used for low sulfur coal, by no more than 17%. Thus the cost effectiveness of the precharger appears to be excellent. Pilot and prototype scale field tests are planned to confirm the initial results.