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:
Jun. 17, 1980
Filed:
Mar. 03, 1976
Applicant:
Inventors:
John K Arand, Rancho Palos Verdes, CA (US);
Lawrence J Muzio, Laguna Niguel, CA (US);
John G Sotter, Mission Viejo, CA (US);
Assignee:
Electric Power Research Institute, Inc., Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
423235 ;
Abstract
Method for reducing NO.sub.x in combustion effluents comprising introducing urea at elevated temperatures in the presence of oxygen, either as a solid or solution in amounts sufficient to reduce the NO.sub.x concentration. Conveniently, the urea may be introduced as a solid powder or as a solution in a hydroxylic solvent, at temperatures in excess of 1300.degree. F. and in the presence of at least 0.1 volume percent oxygen. This invention was made under contract with or supported by the Electric Power Research Institute.