Removal of mercury from a combustion gas stream and apparatus

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

1995-06-29

1997-03-04

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

266148, 422171, 423107, 423210, B01D 5000, B01D 5364, C22B 4300

Patent

active

056074964

ABSTRACT:
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.

REFERENCES:
patent: 5409522 (1995-04-01), Durham et al.

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