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REDUCTION OF COAL-BASED METAL EMISSIONS BY FURNACE SORBENT INJECTION
Citation:
Gullett, B. AND K. Raghunathan. REDUCTION OF COAL-BASED METAL EMISSIONS BY FURNACE SORBENT INJECTION. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-94/568.
Description:
The paper gives results of research of the ability of sorbent injection technology to reduce the potential for trace metal emissions from coal combustion. ilot-scale tests of high-temperature furnace sorbent injection were accompanied by stack sampling for coal-based, metallic air toxics. ested sorbents were hydrated lime, limestone, kaolinite, and bauxite injected at 1000, 1100, and 1300 C, and through the burner at several feed rates. ontinuous gas monitoring and solids sampling by particle size determined changes in metal concentrations from baseline measurements. he impact of sorbent injection on trace metal emissions is a function of metal type, sorbent type, and injection mode. eductions in submicrometer concentrations of antimony, arsenic, mercury, and selenium were observed when hydrated lime and limestone were injected. he total amount of captured arsenic, cadmium, and lead increased when using, variously, hydrated lime, limestone, and kaolinite.