Simultaneous reduction of NOx and heat rate at TVA`s Johnsonville Steam Plant using sequential process optimization
- United Energy Services Corp., New Johnsonville, TN (United States)
- Tennessee Valley Authority, Chattanooga, TN (United States)
- PowerMAX Service of Ultramax Corp., Cincinnati, OH (United States)
The Tennessee Valley Authority (TVA) utilizes boiler tuning as an integral part of their compliance strategy to meet the requirements of the Clean Air Act Amendments of 1990. A desirable tuning solution should not only be effective for minimizing NOx emissions but also should offer opportunities for improved thermal performance leading to cost savings and a rapid return on investment. Guided by these objectives, TVA applied a new technology known as sequential process optimization which makes possible immediate reductions in NOx while constraining other emission and thermal performance parameters to avoid adverse effects. This technology, called the ULTRAMAX Method, was co-developed by EPRI and Ultramax Corp. The ULTRAMAX Method consists of a methodology and the supporting computer software that builds on existing boiler system knowledge and guides the operator through a sequence of control parameter adjustments to achieve ever-improving levels of performance. It is utilized during normal operations and can be tailored to boiler systems of virtually any design. The software can be integrated with a data acquisition system to provide an operator advisory capability. This paper describes an application of sequential process optimization technology to six mid-sized, older-vintage coal-fired boilers. The initial optimization project took place from September through November 1994 but the use of the technology is ongoing by TVA staff. The results were significant reductions of NOx from the previous baseline conditions at full load, with only a few weeks of effort. In addition, significant heat rate and LOI reductions were achieved at the same time.
- OSTI ID:
- 211737
- Report Number(s):
- CONF-951010-; ISBN 0-7918-1486-6; TRN: IM9617%%53
- Resource Relation:
- Conference: International joint power generation conference and exposition, Minneapolis, MN (United States), 8-12 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the 1995 international joint power generation conference -- Volume 1: Environmental control/fuels and combustion technologies. EC-Volume 3; FACT-Volume 20; Frazier, W.F.; Smouse, S.M. [eds.]; PB: 521 p.
- Country of Publication:
- United States
- Language:
- English
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