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:
Nov. 04, 2014
Filed:
Feb. 09, 2012
Applicants:
Henry A. Pfeffer, Mercerville, NJ (US);
David E. Smith, Plainsboro, NJ (US);
Inventors:
Henry A. Pfeffer, Mercerville, NJ (US);
David E. Smith, Plainsboro, NJ (US);
Assignee:
Peroxychem LLC, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 47/00 (2006.01); B01D 53/56 (2006.01); B01D 53/34 (2006.01); C01D 15/00 (2006.01); B01D 53/86 (2006.01); B01D 53/75 (2006.01); B01D 53/60 (2006.01); B01D 53/58 (2006.01);
U.S. Cl.
CPC ...
B01D 53/60 (2013.01); B01D 2251/106 (2013.01); B01D 2251/2062 (2013.01); B01D 53/869 (2013.01); B01D 53/58 (2013.01); B01D 2251/404 (2013.01); B01D 53/56 (2013.01); B01D 53/75 (2013.01); B01D 2251/206 (2013.01); B01D 2251/606 (2013.01); B01D 2251/2067 (2013.01); B01D 2251/304 (2013.01); Y02C 20/10 (2013.01); B01D 53/8625 (2013.01);
Abstract
Combustion flue gas containing NOand SOis treated to remove NOin a multistep system in which NOis reduced in the flue gas stream via selective catalytic reduction or selective non-catalytic reduction with ammonia or an ammonia-forming compound, followed treatment with hydrogen peroxide to remove residual ammonia and, optionally, treatment with an alkali reagent to reduce residual NOin the flue gas stream. The NO-depleted flue gas stream may also be subjected to a desulfurization treatment for removal of SO.