Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture
Reexamination Certificate
2007-10-30
2007-10-30
Vanoy, Timothy C. (Department: 1754)
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
C423S215500
Reexamination Certificate
active
10910035
ABSTRACT:
In a method of removing metals such as mercury from flue gas produced by combustion devices, water or water including a calcium-containing component or water including Cl−anion formers or water including both a calcium-containing component and Cl−anion formers is 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 from about 250° F. to about 350° F. to retain the mercury within the aqueous phase. After the water evaporates, the oxidized mercury is retained on the dry flyash particles present in the flue gas. These flyash particles bound with the oxidized mercury are removed from the flue gas by a particulate removal device, such as an electrostatic precipitator, baghouse filter or cyclone.
REFERENCES:
patent: 4273747 (1981-06-01), Rasmussen
patent: 6136281 (2000-10-01), Meischen et al.
patent: 6375909 (2002-04-01), Dangtran et al.
patent: 6447740 (2002-09-01), Caldwell et al.
patent: 6726888 (2004-04-01), Lanier et al.
patent: 6942840 (2005-09-01), Broderick
patent: 2002/0114749 (2002-08-01), Cole
patent: 2003/0147793 (2003-08-01), Breen et al.
patent: 2003/0161771 (2003-08-01), Oehr
patent: 2003/0185718 (2003-10-01), Sellakumar
patent: 2004/0134396 (2004-07-01), Lanier et al.
patent: 2006/0011115 (2006-01-01), Breen et al.
patent: 0 860 197 (1998-08-01), None
patent: 10180038 (1998-07-01), 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. Fujiwara, Environmental Science and Technology, 2001.
“Chemical Reactions of Mercury in Compustion Flue Gases,” Hall, et al. Water, Air and Soil Pollution, vol. 56, 1991, pp. 3-14.
Breen Bernard P.
Niksa Stephen
Schrecengost Robert A.
Breen Energy Solutions
Buchanan & Ingersoll & Rooney PC
Vanoy Timothy C.
LandOfFree
Dry adsorption of oxidized mercury in flue gas does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dry adsorption of oxidized mercury in flue gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dry adsorption of oxidized mercury in flue gas will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3902464