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:
Aug. 17, 2010
Filed:
Jul. 18, 2008
William Downs, Alliance, OH (US);
Seyed B. Ghorishi, Uniontown, OH (US);
Ralph T. Bailey, Uniontown, OH (US);
Kevin J. Rogers, Wadsworth, OH (US);
William Downs, Alliance, OH (US);
Seyed B. Ghorishi, Uniontown, OH (US);
Ralph T. Bailey, Uniontown, OH (US);
Kevin J. Rogers, Wadsworth, OH (US);
Babcock & Wilcox Power Generation Group, Inc., Barberton, OH (US);
Abstract
An apparatus for low-temperature NO-reduction is disclosed, which is useful in boiler installations used at electric-generating plants. The apparatus employs one or a plurality of moving-bed reactors wherein a moving bed of common base-metal catalyst is used for selective catalytic reduction of NOpresent in flue gas. The moving bed permits continuous introduction of fresh or regenerated catalyst, thus obviating the conventional problems of sulfur-poisoning and consequent reduction in catalytic activity with such catalysts. Due to the lower activation energies of such catalysts, an SCR utilizing the moving-bed reactors disclosed herein can be located downstream of the air heater, further improving electric-generating efficiency. Methods for low-temperature NOreduction are also disclosed.