Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture
Reexamination Certificate
2007-01-30
2008-10-14
Vanoy, Timothy C (Department: 1793)
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
C423S215500, C423S220000, C423S235000, C423S244070, C423S244080, C110S203000, C110S215000, C110S216000, C110S341000, C110S342000, C110S345000, C431S002000
Reexamination Certificate
active
07435400
ABSTRACT:
A method for increasing the nitrogen oxide emissions by either removing or modifying fuel rich nitrogen oxide (NOx) reduction processes thereby improving combustion efficiencies especially with low volatile low sulfur coals, and remove unburned carbon, reduce sulfur dioxide and reducing carbon dioxide emissions, while using post-primary combustion urea or ammonia injection with or without a reburn fuel NOxreducing process to restore NOxto regulated emission levels. Furthermore, adding lime or limestone to the urea or ammonia solution to further reduce SO2and to increase the concentration of the carbon free fly ash to cementitious concentrations. Furthermore, by proper number and disposition of the injectors in the post combustion zone and by further water diluting the mixture, this NOxreduction process is effective at substantially higher gas temperatures than conventional Selective Non-Catalytic NOxReduction and with no ammonia slip. This method significantly increases the profitability of power plants.
REFERENCES:
patent: 6048510 (2000-04-01), Zauderer
patent: 6453830 (2002-09-01), Zauderer
patent: 6722295 (2004-04-01), Zauderer
patent: 2002/0061271 (2002-05-01), Zauderer
patent: 2005/0000220 (2005-01-01), Zauderer
EPA Air Pollution Control Manual, 6thEdition, Ch. 1, Fig. 1.3, pp. 1-7 (EPA/452/B-02-001), Jan. 2002.
“NOx Control Program Addresses CAIR”, in “Clean Coal Today”, DOE/FE-0486, Issue No. 63, Summer 2005, pp. 1 and 5.
EPA Web Site: http://cfpub.epa.gov/gdm/index.cfm?fuseaction=emissions.wizard, downloaded Jan. 26, 2007.
EPA Web Site: http://www.epa.gov/airmarkets/emissions/prelimarp/index.html, downloaded Jan. 26, 2007.
Selective Catalytic Reduction (SCR) Technology for the Control of Nitrogen Oxide Emissions from Coal Fired Boilers—DOE Topical Report No. 23, May 2005, p. 18.
“Terra, Urea & Urea Solution, Storage, Handling and Dilution”, Copyright 2004-2005, revised Dec. 2006, Terra Industries Inc. p. 1-10.
Greenblum & Bernstein P.L.C.
Vanoy Timothy C
LandOfFree
Optimizing post-combustion nitrogen oxide and sulfur dioxide... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optimizing post-combustion nitrogen oxide and sulfur dioxide..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optimizing post-combustion nitrogen oxide and sulfur dioxide... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4010808