Illinois Power`s operator advisory system to reduce heat rate and control NOx based on sequential optimization
- Illinois Power Co., Hennepin, IL (United States). Hennepin Power Station
- Illinois Power Co., Decatur, IL (United States)
- Electric Power Research Inst., Irving, TX (United States)
- Ultramax Corp., Cincinnati, OH (United States)
Illinois Power Company (IP) has three boilers that were affected by Phase1 of the Clean Air Act Amendments of 1990. As part of its compliance strategy, IP chose to install low-NOx burners on only two of those boilers. The strategy employed for the third boiler, Hennepin Power Station Unit 2, was to reduce NOx emissions to a minimum level via tuning. Overcompliance by the other two boilers would contribute to the total system reduction through bubbling of the three boilers. This strategy would result in the saving of $9.4 million in capital modifications. For the strategy to be successful, IP had to develop new operational settings for the boiler at maximum and minimum loads that did not substantially contribute to the system NOx inventory. In addition, it was important that the boiler be operated without a reduction in efficiency under these new settings. IP, working with the Electric Power Research Institute (EPRI), determined that these objectives were consistent with sequential process optimization (SPO), a new technology co-developed by EPRI and Ultramax{reg_sign} Corporation. This paper describes the application of SPO to Hennepin Unit 2, a tangential, twin-furnace, controlled-circulation, coal-fired boiler rated at 235 MW. The optimization project took place in the spring of 1995. An initial reduction of NOx emissions at full load exceeding 20% from previously untuned baseline conditions was achieved with less than two weeks of effort. Boiler efficiency was improved at the same time, as was LOI, in obtaining a lowest-cost balance for operating the boiler.
- OSTI ID:
- 376204
- Report Number(s):
- CONF-960426-; TRN: IM9642%%292
- Resource Relation:
- Conference: 58. annual meeting of the American power conference, Chicago, IL (United States), 9-11 Apr 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the American Power Conference. Volume 58-I; McBride, A.E. [ed.]; PB: 767 p.
- Country of Publication:
- United States
- Language:
- English
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