Flow-accelerated corrosion of pressure vessels in fossil plants

Dooley, R.B.; Chexal, V.K.

doi:10.1016/s0308-0161(99)00087-3

Cited by 112 publications

(63 citation statements)

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“…The main difference is the hydrodynamic effect of fluid at the oxide/solution interface. The process can be categorised into two major stages (Dooley & Chexal, 2000): (a) electrochemical activities (corrosion) at the metal-oxide interface (i.e. the formation of soluble ferrous ions at the oxide/water interface); and (b) mass transfer of the dissolved ferrous ions in the bulk fluid.…”

Section: 1mentioning

confidence: 99%

“…However, the solubility of corrosion products varies depending on other factors and ultimately influences the FAC rate. (Dooley & Chexal, 2000). In this scenario, the corrosion rate is reduced and, thus, there is a reduction in FAC.…”

mentioning

confidence: 97%

“…Sourced from: (Dooley & Chexal, 2000) Figure 2-2: Schematic diagram of FAC mechanism on carbon steel…”

mentioning

confidence: 99%

“…Fluid flow is generally responsible for an accelerated mass transfer process and damage of the protective oxide film on the steel surface (Zhang & Cheng, 2010a). The basic corrosion reactions are (Sastri, 1998) FAC is a major challenge facing the nuclear industry (Yuan, Pandey, & Bickel, 2008), with its operating temperature range of > 140℃: greater than for industrial and fossil plants (Dooley & Chexal, 2000). The solubility of magnetite (Fe 3 O 4 ) is reported to be proportional to the FAC rate in nuclear power plants (NPP), which is dependent on temperature and pH (Jonas, 1985).…”

mentioning

confidence: 99%

“…Sourced from: (Dooley & Chexal, 2000) Figure 2-4: Oxide formed in an oxidised feedwater Since corrosion is involved in FAC, factors affecting corrosion should be considered (Fontana, 1986) when studying FAC processes. Dooley and Chexal (2000) highlighted three major factors that influence the FAC rate:…”

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Flow-Assisted Corrosion in Coal Seam Gas Infrastructure

Eyu¹

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“…Sourced from: (Dooley & Chexal, 2000) Figure 2-2: Schematic diagram of FAC mechanism on carbon steel…”

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confidence: 99%

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confidence: 99%

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Flow-Assisted Corrosion in Coal Seam Gas Infrastructure

Eyu¹

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Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions

Vidojkovic,

Mijajlovic,

Lindeboom

et al. 2023

Energy Science & Engineering

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Film forming amines (FFA) are corrosion inhibitors added to power plant water. The major concern associated with their application is the thermal stability in the high temperature power plant water medium, along with the risk of decomposition into low molecular weight organic acids that can cause corrosive damages in the water/steam cycle. However, there is still a lack of sufficient data on the thermal stability of FFA corrosion inhibitors. This paper presents a comprehensive critical review and state‐of‐the‐art assessment of the results obtained from studying the thermolysis of FFA corrosion inhibitors in power plant water/steam cycle conditions, highlighting the relevance for practical application and research needs. Temperature, exposure time, initial concentration, and alkalizing agents were identified as key factors influencing the thermal stability of FFA in high temperature power plant water. Organic acids are found in concentrations harmless to metal tubes. Advanced scientific background information and additional research are required on this topic.

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Pitting corrosion on 316L pipes in terephthalic acid (TA) dryer

Gong

Cao

Meng

et al. 2009

Materials & Corrosion

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Grade 316L is a type of austenitic stainless steel with ultra-low carbon content and it exhibits superior corrosion resistance. However, pitting is always observed in 316L steel when it is exposed to media containing halide ions. In the present study, we found that in the presence of acetate acid (HAc) containing chloride or bromide ions, pitting occurred on the surface of the rotary steam pipes with the matrix material of 316L steel in terephthalic acid (TA) dryer. In order to identify the causes of the failure, metallographic structures and chemical compositions of the matrix material were inspected by an optical microscope (OM) and a photoelectric direct reading spectrometer. Beside these, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) as well as ion chromatography (IC) were used to analyze the micromorphologies of the corrosion pits and the chemical compositions of the corrosion deposits within them. Analysis of the results revealed the sources of halide ions and the factors accelerating the corrosion rate. Beside these, detailed mechanisms of pitting were discussed and six out of all the seven theoretical morphologies of pitting features were obtained in practice.

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Flow-accelerated corrosion of pressure vessels in fossil plants

Cited by 112 publications

References 0 publications

Flow-Assisted Corrosion in Coal Seam Gas Infrastructure

Flow-Assisted Corrosion in Coal Seam Gas Infrastructure

Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions

Pitting corrosion on 316L pipes in terephthalic acid (TA) dryer

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