Patent ID: 7500437
Filing Date: 2009-03-10
Classification: F23G,F23J,F23N

Abstract:
1. A system for controlling performance of a selective catalytic reduction (SCR) system for reducing NOx levels in flue gas associated with a fossil fuel boiler having one or more generally cross-sectional areas, each cross-sectional area being characterized by a profile of a condition affecting SCR performance at said cross-sectional area, the system comprising: one or more devices associated with said one or more cross-sectional areas for adjusting the profile characterizing a cross-sectional area, said one or more devices operating in accordance with adjustable operating parameters; one or more sensors associated with said one or more cross-sectional areas for detecting conditions at said one or more cross-sectional areas; and a computer programmed to operate as an indirect controller for determining operating settings for the one or more devices, said indirect controller including: