Turbine steam, chemistry, and corrosion. Final report

Technical Report · Mon Aug 01 04:00:00 EDT 1994

OSTI ID:10189393

Jonas, O ^[1]; Rieger, N F ^[2]

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1. Jonas, Inc., Wilmington, DE (United States)
2. Stress Technology, Inc., Rochester, NY (United States)

This report contains a state-of-art review of knowledge concerning the chemistry and corrosive effects of turbine steam containing impurities. The information presented is based on experience from industrial practice, from a comprehensive review of the various subject literatures involved, and from discussions with specialists from many industrialized countries. The objective here is to identify the extent of knowledge now available with regard to turbine steam chemistry and corrosion. This work represents the initial phase of a new EPRI Research and Development Project on Turbine Steam Chemistry and Corrosion, which has been initiated in conjunction with an international collaborative research program. The purpose of this project is to gain additional knowledge of the deposition behavior of common steam impurities under turbine operating conditions. This report and the follow-on project work is intended to advance the state of knowledge of the phenomena involved in the steam turbine corrosion, erosion, scale and deposit formation, and moisture nucleation, and to achieve a quantitative understanding of the phenomena involved, so that predictive theories of deposit formation and erosion may be developed. Impurity concentration mechanisms are discussed in Chapter 2. Distribution and effects of oxygen in turbine steam are discussed in Chapter 3. Liquid-vapor chemical transport due to vaporous carry-over is discussed in Chapter 4. Steam flow and moisture nucleation in turbine stages is reviewed in Chapter 5 from the subject literature. Effects of steam chemistry on droplet nucleation is discussed in Chapter 6 with respect to the influence of impurities on droplet formation. Conclusions and Recommendations are presented in Chapter 7, based on overall consideration of the above topics.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (United States); Stress Technology, Inc., Rochester, NY (United States); Jonas, Inc., Wilmington, DE (United States)
• Sponsoring Organization: Electric Power Research Inst., Palo Alto, CA (United States)
• OSTI ID: 10189393
• Report Number(s): EPRI-TR--103738; ON: UN95001370
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104
22 GENERAL STUDIES OF NUCLEAR REACTORS
220200
AVAILABILITY
COMPONENTS
COMPONENTS AND ACCESSORIES
CONCENTRATION RATIO
CORROSION
CORROSION PRODUCTS
CORROSIVE EFFECTS
EVAPORATION
EXPERIMENTAL DATA
GAS FLOW
IMPURITIES
MAINTENANCE
MASS TRANSFER
OPTIMIZATION
OXIDES
STEAM TURBINES
THERMAL POWER PLANTS
VAPOR CONDENSATION
WATER CHEMISTRY