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:
Jul. 22, 2014
Filed:
Oct. 21, 2010
Christopher A. Gates, Orlando, FL (US);
Uygar O. Selman, Oviedo, FL (US);
Teri J. Robertson, Satellite Beach, FL (US);
Christopher L. Moering, Oviedo, FL (US);
David D. Elwood, Oviedo, FL (US);
Christopher A. Gates, Orlando, FL (US);
Uygar O. Selman, Oviedo, FL (US);
Teri J. Robertson, Satellite Beach, FL (US);
Christopher L. Moering, Oviedo, FL (US);
David D. Elwood, Oviedo, FL (US);
Siemens Energy, Inc., Orlando, FL (US);
Abstract
A system and method of treating an exhaust flow including nitrogen oxides (NOx) in a turbine engine power generation plant is provided. The turbine engine has a selective catalytic reduction system having a catalyst. During steady state operation of the engine, a reducing agent, such as ammonia, is supplied to an injector in an amount based on a measured molar flow of NOx in the exhaust flow. During a disturbance in the operation of the turbine engine, a reducing agent is supplied to the injector in an amount based on a predicted molar flow of NOx in the exhaust flow. In addition, the system can include a biasing feature in which additional reducing agent is supplied to the exhaust flow beyond the predicted molar flow of NOx. The system and method can mitigate NOx during transient engine operation, an operational mode in which emissions are difficult to predict and control.