Abstract
We present data on the effect the pH value of liquid film has on the rate of erosion-corrosion processes in the metal of thermal and nuclear power station elements operating with two-phase flows. We also suggest a calculation diagram and an engineering procedure for determining the pH value of liquid phase in the wet-steam paths of power units depending on the concentration of corrective additions, steam wetness ratio, and temperature.
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References
H. G. Heitmann and W. Kasner, “Erosion-Corrosion in Water/Steam Cycles — Causes and Corrective Measures,” VGB. Kraftwerkstechnik 62(3), 211–219 (1982).
T. Kh. Margulova and O. I. Martynova, Water Chemistries of Thermal and Nuclear Power Stations (Vysshaya Shkola, Moscow, 1987) [in Russian].
O. A. Povarov, G. V. Tomarov, E. V. Velichko, et al., Erosion-Corrosion Wear of the Metal of Elements Used in Turbine Units of Thermal and Nuclear Power Stations: A Review (TsNIITEItyazhmash, Moscow, 1991) [in Russian].
O. A. Povarov, G. V. Tomarov, and V. F. Chertushkin, “The Flow of Liquid Films at Increased Values of Density and Velocity of Wet Steam,” Izv. Ross. Akad. Nauk, Energetika, No. 3, 166–173 (2002).
O. I. Martynova, O. A. Povarov, G. V. Tomarov, and A. F. Gontarenko, “Inhibiting Erosion-Corrosion of the Metals of Turbine Units in One- and Two-Phase Flows,” Tyazh. Mashinostr., No. 8, 18–21 (1990).
E. A. M. Wetton and G. G. Lewis, “High Temperature pH Calculations for Solutions of Volatile Amines,” in Water Chemistry for Nuclear Reactor Systems (BNES, London, 1986), pp. 355–361.
M. A. Styrikovich, O. I. Martynova, and Z. L. Miropol’skii, Steam Generation Processes at Power Stations (Energiya, Moscow, 1969) [in Russian].
P. A. Akol’zin, Corrosion and Protection of the Metal of Thermal Power Equipment (Energoizdat, Moscow, 1982) [in Russian].
RD (Guiding Document) 153-34.1-37.531-00 of November 1, 2000: Standard Operational Regulations for the Water Chemistry of High-Pressure Drum Boilers.
G. V. Tomarov, A. A. Shipkov, V. N. Semenov, and M. V. Kasimovskii, “Ways of Making Operational Methods for Monitoring the State of the Main Metal of Equipment and Pipelines at Nuclear Power Stations More Efficient,” Tyazh. Mashinostr., No. 1, 12–15 (2007).
M. J. Helm, Power Plant Degradation: A Modular Secondary Plant and Integrated Flow Accelerated Corrosion Model, Thesis of Dr. (Massachusetts Inst. of Technology, 2001).
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Original Russian Text © G.V. Tomarov, A.A. Shipkov, 2010, published in Teploenergetika.
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Tomarov, G.V., Shipkov, A.A. The diagram of pH values in the liquid and steam phases during a change in the aggregate state of H2O in the process circuit of nuclear and thermal power stations. Therm. Eng. 57, 579–587 (2010). https://doi.org/10.1134/S0040601510070086
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DOI: https://doi.org/10.1134/S0040601510070086