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. 03, 2005
Filed:
Jun. 23, 2000
Melvin J. Albrecht, Columbiana County, Knox Township, OH (US);
Mark S. Bock, Wadsworth, OH (US);
Kevin J. Rogers, Wadsworth, OH (US);
Ted V. Mull, Jr., Ypsilanti, MI (US);
Melvin J. Albrecht, Columbiana County, Knox Township, OH (US);
Mark S. Bock, Wadsworth, OH (US);
Kevin J. Rogers, Wadsworth, OH (US);
Ted V. Mull, Jr., Ypsilanti, MI (US);
The Babcock & Wilcox Company, New Orleans, LA (US);
Abstract
An integrated air foil and ammonia injection grid provides a plurality of air foils across a flue conveying flue gas. Each air foil has a leading curved edge and a tapered, pointed, trailing end. At least one injection pipe is positioned inside each air foil, and has at least one nozzle for injecting ammonia into the flue gas flowing across the air foils. Preferably, plural injection tubes are provided and positioned one behind the other in each air foil, and each injection tube in a given air foil has a length different than a length of the other injection tubes in the same air foil. A longest injection tube in a given air foil is located furthest downstream and proximate the tapered trailing edge and a shortest injection tube in the same air foil is located furthest upstream, remaining injection tubes in the same air foil being progressively shorter the further upstream any injection tube is located. Apertures may be provided on opposed lateral sides of the air foils for introducing a gas flow into the flue gas passing across the air foils. Ammonia flow to each injection pipe may be individually controlled.