You are here:
EMISSION TEST REPORT, OMSS FIELD TEST ON CARBON INJECTION FOR MERCURY CONTROL
Citation:
Nebel, K. L., D. M. White, C. R. Parrish, T. G. Zirkle, M. A. Palazzolo, AND M. W. Hartman. EMISSION TEST REPORT, OMSS FIELD TEST ON CARBON INJECTION FOR MERCURY CONTROL. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-92/192 (NTIS PB93-105518), 1992.
Impact/Purpose:
information
Description:
The report discusses results of a parametric evaluation of powdered activated carbon for control of mercury (Hg) emission from a municipal waste cornbustor (MWC) equipped with a lime spray dryer absorber/fabric filter (SD/FF). The primary test objectives were to evaluate the effect of carbon type, feed rate. and feed location on Hg emissions and control efficiency. Secondary process parameters studied included the impact of ammonia injection for nitrogen oxides control, SD outlet temperature, and SD/FF acid gas control efficiency on Hg removal. The time stability of Hg collected with ash was also studied. Conducted at the Ogden Martin Systems of Stanislaus, Inc. MWC, near Modesto, CA, testing covered 16 system operating conditions, including normal unit operation (no carbon injection) and operation without ammonia injection. Test results showed that the two primary variables affecting both Hg emission and control efficiency were carbon feed rate and uncontrolled Hg levels. The results also indicated that Hg emissions were reduced by over 80% at high carbon addition rates. At low carbon feed rates, both the average Hg emissions rate and the variability in Hg levels during individual tests were significantly higher. The secondary parameters did not affect Hg control over the range of values tested.