Capturing Characteristic of Gaseous Mercury in Desulfurization Solutions Simulating the Limestone-Gypsum Process
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概要
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Combustion flue gases have particulate and gaseous mercury. Particulate mercury is captured in an electrostatic precipitator (EP) as fly ash but gaseous mercury passes through an EP and flows into a wet-flue gas desulfurization (wet-FGD) unit in combustion plants. Besides, gaseous mercury takes elemental and oxidized forms (Hg<SUP>0</SUP> and He2+) in combustion flue gases, these chemical forms have great influence on the behavior of gaseous mercury in a wet-FGD unit.<BR>The behavior of Hg<SUP>0</SUP> and Hg<SUP>2+</SUP> in water and calcium compound slurries simulating limestone-gypsum process, which is one of wet-FGD systems, has been studied. It was clarified that almost of Hg<SUP>0</SUP> passed through the solutions, on the other hand Hg<SUP>2+</SUP> was captured in it and some captured He was converted into Hg<SUP>0</SUP>, which was released from the solutions. The conversion ratio of Hg<SUP>2+</SUP> into Hg<SUP>0</SUP> was influenced by gas and solution conditions.
- 一般社団法人 日本エネルギー学会の論文
一般社団法人 日本エネルギー学会 | 論文
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