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Mercury released from wet flue gas desulfurization (WFGD) devices can be inhibited by additives that can transfer mercury to its solid phase. However, the use of additives increases the mercury content in desulfurization gypsum, and the mercury is released again during the calcination process. In this study, NaHS, 2,4,6-trimercaptotiazine, trisodium salt nonahydrate (Na3(C3N3S3)·9H2O, or TMT) and...
Mercury in oxy-coal combustion flue gas may cause liquid metal embrittlement and material failure to aluminum (Al) heat exchangers, which needs to be removed with high efficiency before CO2 compression. Oxidized Hg (Hg2+) is soluble thus can be co-removed with SO2 in WFGD (Wet Flue Gas Desulfurization). However, the dissolved Hg2+ in slurry may also transform to the insoluble elemental mercury (Hg...
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