Abstract
The increased requirements to the quality of the water heat conductor for working superhigh (SHP) and supercritical (SCP) pressure power plants and promising units, including combined-cycle gas turbine (CCGT) units and power plants with ultrasupercritical parameters (USCPs), can largely be satisfied through specific electric conductivity and pH measurements for cooled heat conductor samples combined with calculations of ionic equilibria and indirect measurements of several specified and diagnostic parameters. The possibility of calculating the ammonia and chloride concentrations and the total concentration of hardness and sodium cations in the feed water of drum-type boilers and the phosphate and salt contents in boiler water was demonstrated. An equation for evaluating the content of potentially acid substances in the feed water of monotube boilers was suggested. The potential of the developed procedure for evaluating the state of waterchemistry conditions (WCCs) in power plants with CCGT units was shown.
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References
STO 70238424.27.100.013-2009. Water Preparation Units and Water–Chemical Regime of Heat Electric Stations. Condition of Creating. Norms and Requirements. Standard of Organization (InVEL, Moscow, 2009) [in Russian].
Rules of Technical Exploitation of Electrical Stations and Nets of Russian Federation (SPO ORGRES, Moscow, 2003) [in Russian].
B. M. Larin, E. N. Bushuev, E. V. Kozyulina, A. B. Larin, and S. V. Kiet, RF Patent 2348031 (Otkrytiya, Izobreteniya, Moscow, 2009), No. 9.
S. V. Kiet, V. N. Voronov, and E. N. Bushuev, “Using an APK-051 analyzer in a chemical engineering monitoring system,” Therm. Eng. 56 (7), 617–620 (2009).
B. M. Larin, E. N. Bushuev, A. B. Larin, and N. A. Eremina, RF Patent 2389014 (Otkrytiya, Izobreteniya, Moscow, 2010), No. 13.
B. M. Larin, A. B. Larin, E. V. Kozyulina, and A. V. Kolegov, “The calculation of quality indices of the water heat carrier and estimation of the condition of water chemistry of drum boilers,” Therm. Eng. 59 (7), 497–501 (2012).
B. M. Larin, E. N. Bushuev, M. K. L. Batti, and A. B. Larin, RF Patent 2329500 (Otkrytiya, Izobreteniya, Leningrad, 2008), No. 20.
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Original Russian Text © A.B. Larin, B.M. Larin, 2016, published in Teploenergetika.
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Larin, A.B., Larin, B.M. Improvement of chemical monitoring of water-chemistry conditions at thermal power stations based on electric conductivity and pH measurements. Therm. Eng. 63, 374–378 (2016). https://doi.org/10.1134/S0040601516030058
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DOI: https://doi.org/10.1134/S0040601516030058