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:
Feb. 19, 2008
Filed:
Feb. 06, 2006
Christopher R. Symrniotis, St. Charles, IL (US);
William H. Sun, Lisle, IL (US);
Christopher R. Symrniotis, St. Charles, IL (US);
William H. Sun, Lisle, IL (US);
Fuel Tech, Inc., Batavia, IL (US);
Abstract
NOand SOemissions from combustion of a sulfur containing carbonaceous fuel are reduced simultaneously. The combustion gases comprising NOand SOare mixed with a NOcontrol agent into the combustion gases at a point upstream of a selective catalytic reduction catalyst for reduction of NO. Following an SCR catalyst or other equipment that can oxidize SOto SOand prior to contact with an air heater for heating incoming combustion air, magnesium hydroxide is introduced in amounts and with droplet sizes and concentrations effective to form nano-sized particles in the effluent and reduce SOcaused by the oxidation of SOin the catalyst. Computational fluid dynamics is employed to determine flow rates and select reagent introduction rates, reagent introduction location(s), reagent concentration, reagent droplet size and/or reagent momentum.