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:
May. 21, 2013
Filed:
Jan. 26, 2011
Stephen P. Goff, Allentown, PA (US);
Mark L. White, Tannersville, PA (US);
Stephen G. Deduck, Scotch Plains, NJ (US);
John D. Clark, Goshen, NY (US);
Christopher A. Bradley, Elizabethtown, PA (US);
Robert L. Barker, Hochessin, DE (US);
Zenon Semanyshyn, East Hanover, NJ (US);
Stephen P. Goff, Allentown, PA (US);
Mark L. White, Tannersville, PA (US);
Stephen G. Deduck, Scotch Plains, NJ (US);
John D. Clark, Goshen, NY (US);
Christopher A. Bradley, Elizabethtown, PA (US);
Robert L. Barker, Hochessin, DE (US);
Zenon Semanyshyn, East Hanover, NJ (US);
Covanta Energy Corporation, Fairfield, NJ (US);
Abstract
Through the addition of tertiary air and a reduction of secondary air, NOx emissions from a waste-to-energy (WTE) boiler may be reduced. The tertiary air is added to the WTE at a distance from the secondary air, in a boiler region of relatively lower temperatures. A secondary NOx reduction system, such as a selective non-catalytic reduction (SNCR) system using ammonia or urea, may also be added to the boiler with tertiary air to achieve desirable high levels of NOx reductions. The SNCR additives are introduced to the WTE boiler proximate to the tertiary air.