An Optimal Way to Prevent Corrosion of Equipment at TPP
Karlygash Idrissova1, Aitbala Tumanova2, Gulzira Koldassova3
1Karlygash Idrissova, Almaty University of Power Engineering & Telecommunications, Almaty Kazakhstan.
2Aitbala Tumanova, Almaty University of Power Engineering & Telecommunications, Almaty Kazakhstan.
3Gulzira Koldassova, Almaty University of Power Engineering & Telecommunications, Almaty Kazakhstan.
Manuscript received on 25 May 2019 | Revised Manuscript received on 03 June 2019 | Manuscript Published on 22 June 2019 | PP: 326-330 | Volume-8 Issue-3S, February 2019 | Retrieval Number: C10660283S19/19©BEIESP
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Abstract: In order to apply polyphosphates as the inhibitors on the running pulp line, it is necessary to clean beforehand the inner surface of pipes from the essential part of corrosion products or apply high concentrations (more than 100 mg/l) of the inhibitor, which is unacceptable for economic and social aspects. In real pipelines having been operating for at least 10 years with a significant amount of corrosion products on the internal surface of the pipeline, introduction of polyphosphate inhibitor has no significant impact on the reduction of absolute corrosiveness of water [1]. The fight against internal corrosion of pipelines of the hydraulic ash removal system gives the maximum effect when carried out in a timely manner, immediately after the putting the pipeline into operation. Slowing corrosion by stabilizing water treatment or installation of inhibitors would be effective if the protective film is formed on the surface of the tubes rapidly and has good adhesion to the metal surface. Great influence on the adhesion has the state of the inner surface of the metal. Presence of significant amounts of corrosion products greatly reduces the efficiency of anti-corrosion treatment of water, and requires high doses of inhibitors, yet, the degree of protection is still much lower than with the new pipes.
Keywords: Thermal Power Plants, Corrosion Inhibitors, The Corrosion Rate, Depth Indicator of the Corrosion Rate.
Scope of the Article: Thermal Engineering