Results of high efficiency SO{sub 2} removal testing at PSI Energy`s Gibson Station
Technical Report
·
OSTI ID:121471
- Radian Corp., Louisville, KY (United States)
- PSI Energy, Owensville, IN (United States); and others
The U.S. Department of Energy`s Pittsburgh Energy Technology Center (PETC) is evaluating the high-efficiency SO{sub 2} removal capabilities of existing electric utility flue gas desulfurization (FGD) systems. Full-scale tests have been conducted at six existing wet scrubbers, involving chemical additives, physical modifications, and/or other changes to increase the SO{sub 2} removal of 95 to 98 percent. The Electric Power Research Institute (EPRI) is through calibration and use of the FGDPRISM process simulation This paper presents the results of tests conducted at PSI Energy`s Gibson Station Unit 5. This 650-MW unit fires 2.4 to 3.5% sulfur coal. The FGD system employs the Kellogg/Weir horizontal cross-flow absorber design and uses limestone reagent with dolomitic lime for magnesium enhancement. It operates in an inhibited-oxidation mode via sulfur addition. Both sodium formate and DRA addition were evaluated as performance upgrade options at this site. the effects of increasing the slurry pH (reagent ratio) and the liquid-to-gas ratio were also evaluated. Actual full-scale SO{sub 2} removal performance and additive consumption results are presented. These results were used to calibrate EPRI`s FGDPRISM simulation model which was then used to project the performance and costs of the various upgrade options. An economic analysis was performed to determine the cost effectiveness of the options as well as to determine the potential net annual value to PSI Energy. Results indicate that the economics of increasing SO{sub 2} removal efficiency are very attractive relative to the current market value of SO{sub 2} allowances.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 121471
- Report Number(s):
- EPRI-TR--105258-Vol.1; CONF-950332--Vol.1
- Country of Publication:
- United States
- Language:
- English
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