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RECORD NUMBER: 4 OF 7

OLS Field Name OLS Field Data
Main Title Evaluation of Pilot ESP Performance with Elevated Loadings from Sorbent Injection Processes.
Author Sedman, C. B. ; Valentine, R. E. ; Plaks, N. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher 4 Sep 91
Year Published 1991
Report Number EPA/600/D-91/244;
Stock Number PB92-113117
Additional Subjects Electrostatic precipitators ; Air pollution control equipment ; Sorbent injection processes ; Performance evaluation ; Sorbents ; Sulfur dioxide ; Particle sizes ; Fly ash ; Process charting ; Silicates ; ADVACATE process
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB92-113117 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 02/24/1992
Collation 18p
Abstract
The paper gives results of an evaluation of pilot electrostatic precipitator (ESP) performance with elevated loadings from the advanced silicate (ADVACATE) sorbent injection process. Measurements were made of a calcium silicate sorbent injected into a duct upstream of an ESP. The concentration of ADVACATE sorbent submicron particles (=/< 1 micrometer) and projected ESP emissions tended to peak and began to decrease when the overall particulate matter addition rate to the gas stream approached and then exceeded 12 g/Nm3. The submicron fly ash, subjected to the same duct injection, increased linearly with increased injection rates from 3 to 24 g/Nm3. A possible explanation is in-duct agglomeration of fines by the coarse particles, similar to observations reported on cyclone performance evaluations. The duct, flue gas, and sorbent characteristics that affect agglomeration tendencies probably play a major role in the observations presented. Most of the ADVACATE material settled out of the gas stream. Measurements of the gas-suspended residual particulate matter were used to model expected ESP performance. The encouraging results of the modeling suggest that collection of reacted ADVACATE sorbent in a ESP is manageable.