Control of mercury and other elemental metal emissions from combustion devices by oxidation
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United States of America Patent
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Sep 14, 2004
Grant Date -
Aug 7, 2003
app pub date -
Feb 7, 2002
filing date -
Feb 7, 2002
priority date (Note) -
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Abstract
In a method of removing metals such as mercury from flue gas produced by combustion devices, ammonia and optionally carbon monoxide are injected into the flue gas in a manner so that there are sufficient amounts of these materials in the flue gas when the flue gas is at a temperature of from 900.degree. F. to 1350.degree. F. to oxidize the metals within the flue gas. The oxidized metals are then attracted to particulates present in the flue gas. These particulates bound with oxidized metals are removed from the flue gas by a particulate removal device such as an electrostatic precipitator or baghouse.
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