Adaptive Process Controller Shaves NO sub(x) and Cuts Heat Rate

Installation of an adaptive process controller for NO sub(x) reduction and enhancement of the heat rate on Unit 1 of Allegheny Energy Supply's Albright generating station is described. The system was designed to minimize NO sub(x) emissions subject to all stack emission requirements, including...

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Published inPower engineering (Barrington, Ill.) Vol. 105; no. 9; p. 70
Main Authors Payson, Edward P, Burge, Robert L, Kowalcheck, John L, Schrecengost, Robert A
Format Magazine Article
LanguageEnglish
Published 01.09.2001
Subjects
Air pollution control
Carbon monoxide
Digital libraries
Gas emissions
Learning systems
Mathematical models
Nitrogen oxides
Optimization
Process control
Thermal effects
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Summary:Installation of an adaptive process controller for NO sub(x) reduction and enhancement of the heat rate on Unit 1 of Allegheny Energy Supply's Albright generating station is described. The system was designed to minimize NO sub(x) emissions subject to all stack emission requirements, including opacity and carbon monoxide limits, while providing an optimal heating rate. Findings from analysis of the implemented system indicated that the adaptive process controller reduced emissions of NO sub(x) by some 15%. In addition, the system provided a 2% improvement in CEM heat rate while maintaining CO emissions to below 250 ppm. Factors that led to implementation of the adaptive process controller at the facility in question are discussed. The three-stage methodology used for NO sub(x) emission optimization at the site is examined.
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ISSN:0032-5961