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. 05, 2014
Filed:
Jul. 10, 2013
Ajit B. Dandekar, Falls Church, VA (US);
Richard F. Socha, Yardley, PA;
Richard L. Eckes, Madison, NJ (US);
S. Beau Waldrup, Lumberton, TX (US);
Jason M. Mcmullan, Bethlehem, PA (US);
Ajit B. Dandekar, Falls Church, VA (US);
Richard F. Socha, Yardley, PA;
Richard L. Eckes, Madison, NJ (US);
S. Beau Waldrup, Lumberton, TX (US);
Jason M. McMullan, Bethlehem, PA (US);
ExxonMobil Research and Engineering, Annandale, NJ (US);
Abstract
Methods and systems are provided for selective catalytic reduction of NOx with a low molecular low molecular weight aldehyde, e.g., acetaldehyde, as a reductant using a catalyst system including two catalysts. An exhaust stream containing an amount of NO from a combustion operation is provided. A portion of the exhaust stream is introduced to a first catalyst to convert the NO to NO. The exhaust stream from the first catalyst with NOand a reductant stream containing a low molecular weight aldehyde, e.g., acetaldehyde, are introduced to the second catalyst to convert the NOto N. The first catalyst can be bulk CoO, Ru or Pt loaded on alumina; the second catalyst can be various zeolites, or zeolites loaded with potassium.