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:
Jan. 30, 2007
Filed:
Jul. 06, 2004
Vladimir M. Zamansky, Oceanside, CA (US);
Vitali Victor Lissianski, San Juan Capistrano, CA (US);
Boris Nickolaevich Eiteneer, Aliso Viejo, CA (US);
Vladimir M. Zamansky, Oceanside, CA (US);
Vitali Victor Lissianski, San Juan Capistrano, CA (US);
Boris Nickolaevich Eiteneer, Aliso Viejo, CA (US);
General Electric Company, Schenectady, NY (US);
Abstract
Methods and systems for reducing nitrogen oxides in combustion flue gas is provided. The method includes combusting a fuel in a main combustion zone such that a flow of combustion flue gas is generated wherein the combustion flue gas includes at least one nitrogen oxide species, establishing a fuel-rich zone, forming a plurality of reduced N-containing species in the fuel rich zone, injecting over-fire air into the combustion flue gas downstream of fuel rich zone, and controlling process parameters to provide conditions for the reduced N-containing species to react with the nitrogen oxides in the OFA zone to produce elemental nitrogen such that a concentration of nitrogen oxides is reduced.