The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2011
Filed:
Jan. 16, 2008
Larry William Swanson, Laguna Hills, CA (US);
Wei Zhou, Foothill Ranch, CA (US);
David Kelly Moyeda, Laguna Hills, CA (US);
Roy Payne, Mission Viejo, CA (US);
Larry William Swanson, Laguna Hills, CA (US);
Wei Zhou, Foothill Ranch, CA (US);
David Kelly Moyeda, Laguna Hills, CA (US);
Roy Payne, Mission Viejo, CA (US);
General Electric Company, Schenectady, NY (US);
Abstract
A method of decreasing a concentration of nitrogen oxides in a combustion gas flowing through a vessel including: generating a flue gas in a combustion zone of the vessel, the flue gas containing nitrogen oxides and carbon monoxide; providing overfire air into a burnout zone of the vessel from a first injector of overfire air to oxidize at least some of the carbon monoxide in the flue gas; injecting a selective reducing agent concurrent with overfire air at a level in the burnout zone downstream of the first injector of overfire air and downstream of the oxidization of the carbon monoxide, and reacting the selective reducing agent with the flue gas to reduce the nitrogen oxides.