Advertisement

Power Technology and Engineering

, Volume 53, Issue 1, pp 78–83 | Cite as

Causes of Erosion-Induced Damage to Elements of Low-Pressure Evaporator Circuits of the Heat-Recovery Boilers of Combined-Cycle Power Plants

  • I. I. Belyakov
  • V. I. Breus
  • M. S. Popov
Article
  • 15 Downloads

An analysis of the causes of erosion-induced wear of the metal in pipe bends of evaporator heating pipe surfaces is performed based on experience gained from the operation of the heat-recovery boilers of combined-cycle (steam-gas) power plants. Damage to the evaporator tubes of a low-pressure boiling circuit is caused by the destruction of the protective oxide film due to intensive turbulization of the near-wall layer of water (which is at saturation temperature) travelling through the bend, inducing cavitation due to the formation of steam bubbles and their condensation. The protective oxide film formed in the hydrate water chemistry regime possesses the greatest stability.

Keywords

combined-cycle power plant (CCPP) steam-gas power plants erosion-induced damage of bends cavitation wear of the metal in pipes flow regimes of a two-phase mixture influence of water-chemical regime 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    V. I. Nikitin, I. I. Belyakov, and V. I. Breus, “Damage to the steam-generating pipes of the low-pressure circuit of the heat-recovery drum boiler of combined-cycle power plant PGU-450 of the Northwest thermal electric power plant,” Teploénergetika, No. 2 (2009).Google Scholar
  2. 2.
    I. I. Belyakov, V. I. Breus, A. B. Barannikov, and M. S. Popov, “Causes of erosion-induced wear of the metal of the inner surface of the pipes of heat exchangers,” Énergetik, No. 8 (2016).Google Scholar
  3. 3.
    J. Malloy, M. Taylor, A. Fabricius, M. Graham, and D. Moelling, “Contributions of flow-accelerated corrosion and liquid droplet impingement to pipe thinning in HRSG evaporator tubes,” PPChem, No. 4 (2013).Google Scholar
  4. 4.
    I. I. Belyakov and V. N. Breus, “Analysis of the causes of corrosion-erosion induced wear of the metal of the inner surface of the inlet segments of heat exchangers,” Élektr. Stantsii, No. 11 (2005).Google Scholar
  5. 5.
    RF Pat. No. 113569, N. N. Trifonov, I. I. Belyakov, S. S. Ivashchenko, S. B. Esin, E. K. Nikolaenkova, and I. V. Kovynev, “Patent for useful model of a high-pressure preheater,” Claim date November 12, 2010.Google Scholar
  6. 6.
    D. Buttrworth and J. Robertson, “Hydrodynamics and heat exchange in boiling in horizontal pipes,” in: Heat Transfer in Two-Phase Flow [Russian translation], Énergiya, Moscow (1980).Google Scholar
  7. 7.
    L. Yu. Krasyakova, “Certain characteristics of the travel of a two-phase mixture in a horizontal pipe,” Zh. Tekh. Fiz., 12(4) (1972).Google Scholar
  8. 8.
    L. Yu. Krasyakova and I. I. Belyakov, “Deposits of iron oxides in the NRCh of boilers at the critical pressure with a residual fuel oil boiler,” Teploénergetika, No. 1 (1970).Google Scholar
  9. 9.
    K. D. Brumel and A. S. Buchanan, “Pressung drop testing once through boilers,” Trans. FSMEA96, No. 1 (1974). 10. M. Ye. Shitsman, Neutral-Oxygen Water Chemistry Regime in Supercritical-Pressure Power Generating Units [in Russian], Énergoatomizdat, Moscow (1983).Google Scholar
  10. 10.
    I. I. Belyakov, “The problem of reliability of steam-generating heating surfaces of boilers. From experience at developing the power-generating units of high-pressure preheaters at electric power plants in Russia,” Énergetik, No. 10 (2014).Google Scholar
  11. 11.
    I. I. Belyakov, “On the use of an oxygen-based water chemistry regime in high-pressure drum boilers,” Énergosber. Vodopodg., No. 3 (2000).Google Scholar
  12. 12.
    A. F. Bogachev, Yu. A. Radin, and P. A. Berezinets, Aspects of the Use and Damage to Heat-Recovery Boilers of Binary Combined-Cycle Power Plants [in Russian], Énergoatomizdat, Moscow (2008).Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • I. I. Belyakov
    • 1
  • V. I. Breus
    • 1
  • M. S. Popov
    • 1
  1. 1.JSC Polzunov Scientific and Development Association for Research and Design of Power EquipmentSt. PetersburgRussia

Personalised recommendations