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Anti-corrosion management method for power generation equipment

A technology for power generation equipment and management methods, which is applied in nuclear power generation, combustion equipment, combustion methods, etc., and can solve problems such as no record of film anti-corrosion management, difficulties in anti-corrosion management, and difficulty in controlling the use of pH regulators.

Inactive Publication Date: 2015-08-05
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of such a pH adjuster is difficult to control, and there is a problem that corrosion prevention management becomes difficult.
[0005] In addition, Patent Documents 3 to 5 disclose methods for preventing corrosion of boiler equipment by controlling the amount of dissolved oxygen in the boiler, but regarding Fe 2 o 3 Anti-corrosion management of film is not recorded

Method used

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  • Anti-corrosion management method for power generation equipment
  • Anti-corrosion management method for power generation equipment
  • Anti-corrosion management method for power generation equipment

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no. 1 Embodiment approach ）

[0025] figure 1 It is a system diagram of a pressurized water nuclear reactor (hereinafter abbreviated as "PWR") according to the present embodiment. Such as figure 1 As shown, in the PWR 10 of this embodiment, a high-pressure turbine 12 , a wet storage water separation reheater 13 , a low-pressure turbine 14 , and a condenser 15 are sequentially connected to a steam generator (boiler) 11 . In addition, a low-pressure feedwater heater 16 and a high-pressure feedwater heater 17 are connected to the condenser 15 , and the high-pressure feedwater heater 17 is connected to the steam generator 11 . In addition, a deaerator 18 is provided between the low-pressure feedwater heater 16 and the high-pressure feedwater heater 17 .

[0026] PWR 10 may operate, for example, as follows. That is, the high-pressure turbine 12 is driven by steam generated in the steam generator 11 . Next, the water vapor driven by the high-pressure turbine 12 is cooled, and part of it is liquefied to becom...

no. 2 Embodiment approach

[0046] Figure 4 It is a system diagram of a boiling water nuclear reactor (hereinafter abbreviated as BWR) according to this embodiment. Such as figure 1 As shown, the BWR 20 of the present embodiment is sequentially connected to a nuclear reactor 21 with a high-pressure turbine 22 , a wet storage water separation reheater 23 , a low-pressure turbine 24 , and a condenser 25 . In addition, a low-pressure feedwater heater 26 and a high-pressure feedwater heater 27 are connected to the condenser 25 , and the high-pressure feedwater heater 27 is connected to the nuclear reactor 21 . In addition, a furnace water purification system 28 is installed on the nuclear reactor 21 .

[0047] BWR 20 may, for example, operate as follows. That is, the high-pressure turbine 22 is driven by water vapor generated in the nuclear reactor 21 . Next, the water vapor driven by the high-pressure turbine 22 is cooled and partly liquefied to become water. Therefore, the above-mentioned water vapor ...

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Abstract

Provided is a method for monitoring corrosion in a power plant, including: forming a film with a composition of M1FeO3 (M1 is a trivalent or tetravalent metal) or M2Fe2O4 (M2 is a divalent metal) on the inner wall surface of an apparatus of the power plant; and maintaining the film stably by controlling the amount of introduction of oxygen into the apparatus commensurate with a temperature in the apparatus.

Description

technical field [0001] The invention relates to an anti-corrosion management method for power generation equipment. Background technique [0002] Corrosion is a long-term phenomenon that the structural material of the machine, that is, metal, becomes ions and dissolves into the environment. It is an important factor that determines the life of the machine. In addition, if corrosion progresses, unexpected damage may occur due to breakage of the equipment, and it is necessary to take countermeasures against corrosion from the viewpoint of safety. Therefore, many devices used in outdoor environments and high-temperature environments, especially power generation equipment, need to take countermeasures against corrosion. Since corrosion is a phenomenon that occurs on the surface of a material, it greatly depends on the surface state of the material. [0003] The surface of metal structural materials of machines used in high temperature is usually covered by Fe 2 o 3 Wait for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/10
CPCG21C17/0225C23C8/18C23F11/185C23C8/02C23C8/14Y02E30/30C23F11/00F23M5/00
Inventor 柴崎理冈村雅人根岸孝次山本诚二宫崎豊明
Owner KK TOSHIBA