Reducing NO{sub x} while maintaining boiler performance at TVA`s Johnsonville Steam Plant using constrained sequential 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 NO{sub x} 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 the ULTRAMAX Method, which utilizes a new technology, co-developed by EPRI and Ultramax Corp., called sequential process optimization. This technology makes possible immediate reductions in NO{sub x} while constraining other emission and thermal performance parameters to avoid adverse effects. 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 optimization project took place from September through November 1994. The results were significant reductions of NO{sub x} from the previous baseline conditions at full load, with little more than two weeks of effort. In addition, heat rate and LOI reductions were achieved for some units.
- Research Organization:
- Electric Power Research Inst. (EPRI), Palo Alto, CA (United States)
- OSTI ID:
- 269436
- Report Number(s):
- EPRI-TR-105978-V2; CONF-9505150-Vol.2; TRN: 96:003478-0001
- Resource Relation:
- Conference: EPRI/EPA joint symposium on stationary combustion NO/sub x/ control, Kansas City, MO (United States), 16-19 May 1995; Other Information: PBD: Jan 1996; Related Information: Is Part Of Proceedings: EPRI/EPA 1995 joint symposium on stationary combustion NO{sub x} control: Volume 2, Wednesday, May 17, 1995, Sessions 4 and 5; PB: 229 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Simultaneous reduction of NOx and heat rate at TVA`s Johnsonville Steam Plant using sequential process optimization
Reducing NO{sub x} while maintaining boiler performance using constrained sequential optimization