Progress of Elemental Mercury Control from Coal-fired Flue Gas

Mercury emission from coal-fired process in China has attracted international concerns.Elemental mercury is the major form in mercury emitted from coal-fired flue gas.The effective mercury controlling way is to convert elemental mercury to oxidized mercury,which is easily to be removed then.Main oxidation mechanism and control technologies recently developed were summarized,various control characteristics were compared and analyzed,and trend was also initiatively predicted.Existing flue gas purification devices were proposed to be used fully for removal of elemental mercury from coal-fired flue gas economically and effectively.