Control of mercury and other elemental metal emissions using...

Details Control of mercury and other elemental metal emissions using... Control of mercury and other elemental metal emissions using...

2004-07-16

2009-10-06

Lorengo, Jerry (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

C423S210000, C423S215500, C423S213200, C110S345000

Reexamination Certificate

active

07597864

ABSTRACT:
Ammonia and optionally carbon monoxide are injected into the flue gas containing metals such as mercury 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° F. to 1,450° F. to oxidize the metals within the flue gas. The oxidized metals are then attracted to particulates present in the flue gas. Oxidation is facilitated by a reaction zone stabilizer through which the flue gas flows. The stabilizer provides a stable continuous ignition front. These particulates bound with oxidized metals are removed from the flue gas by a particulate removal device such as an electrostatic precipitator or baghouse. After the ammonia is injected, the flue gas can be rapidly cooled to a temperature below 500° F. to minimize decomposition of oxidized metals in the flue gas.

REFERENCES:
patent: 5374410 (1994-12-01), Grasselli et al.
patent: 5443805 (1995-08-01), Beer et al.
patent: 5670122 (1997-09-01), Zamansky et al.
patent: 6136281 (2000-10-01), Meischen et al.
patent: 6146605 (2000-11-01), Spokoyny
patent: 6258336 (2001-07-01), Breen et al.
patent: 6357367 (2002-03-01), Breen et al.
patent: 6375909 (2002-04-01), Dangtran et al.
patent: 6913737 (2005-07-01), Honjo et al.
patent: 2003/0147793 (2003-08-01), Breen et al.
patent: 0 860 197 (1998-08-01), None
patent: WO 93/23147 (1993-11-01), None
“Kinetic Modeling of Homogeneous Mercury Oxidation: The Importance of NO and H2O in Predicting Oxidation in Coal-Derived Systems,”.
S. Niksa, Joseph J. Helble and N. Fugiwara, Environmental Science and Technology, 2001.
“Chemical Reactions of Mercury in Combustion Flue Gases,” Hall, et al. Water, Air and Soil Pollution, vol. 56, 1991, pp. 3-14.

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