Removal of mercury from a combustion gas stream

Details Removal of mercury from a combustion gas stream Removal of mercury from a combustion gas stream

B - Operations, Transporting

01

D

B01D 53/64 (2006.01) F23J 15/02 (2006.01)

Patent

CA 2179000

Vapors of elemental mercury and mercury compounds contained in a hot combustion gas stream are removed therefrom by oxidizing the elemental mercury, to form a mercury compound, and adsorbing the mercury compounds on adsorbent particles such as activated alumina. Oxidation is catalytically promoted. After adsorbing a substantial quantity of mercury compounds, the spent adsorbent particles can be regenerated and re-used by heating the particles to decompose and drive off the mercury compounds. In another embodiment, oxidation of the elemental mercury is catalytically promoted at a catalyzing station, and the mercury compounds are removed from the gas stream by scrubbing.

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