The older field testing program by NETL included references to BHE Dave Johnston and Coal Creek where ACI was compared to CaBr2 Using CaBr2 injection to achieve 85% total Hg removal at the “representative” PRB-fired unit equipped with an SCR, results in 20-year levelized costs of 0.13 mills/kWh and $2,800/lb Hg removed. This analysis shows that Hg control via CaBr2 coal treatment is not a capital-intensive process and high levels of FGD Hg capture can be achieved at relatively low injection rates, particularly at units equipped with an SCR for Nox control. Click Here For Complete Article Text
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