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

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.


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 


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© 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

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