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Method and system for SCR optimization

United States Patent

7,500,437
March 10, 2009
View the Complete Patent at the US Patent & Trademark Office
Methods and systems are provided for controlling SCR performance in a boiler. The boiler includes one or more generally cross sectional areas. Each cross sectional area can be characterized by one or more profiles of one or more conditions affecting SCR performance and be associated with one or more adjustable desired profiles of the one or more conditions during the operation of the boiler. The performance of the boiler can be characterized by boiler performance parameters. A system in accordance with one or more embodiments of the invention can include a controller input for receiving a performance goal for the boiler corresponding to at least one of the boiler performance parameters and for receiving data values corresponding to boiler control variables and to the boiler performance parameters. The boiler control variables include one or more current profiles of the one or more conditions. The system also includes a system model that relates one or more profiles of the one or more conditions in the boiler to the boiler performance parameters. The system also includes an indirect controller that determines one or more desired profiles of the one or more conditions to satisfy the performance goal for the boiler. The indirect controller uses the system model, the received data values and the received performance goal to determine the one or more desired profiles of the one or more conditions. The system model also includes a controller output that outputs the one or more desired profiles of the one or more conditions.
Lefebvre; Wesley Curt (Boston, MA), Kohn; Daniel W. (Cambridge, MA)
NeuCo, Inc. (Boston, MA)
11/ 012,630
20060042525
December 15, 2004
GOVERNMENT RIGHTS This invention was made with Government support under Contract Number DE-FC26-04NT41768 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.