WO2012014894A1 - プラントの腐食抑制方法及びプラント - Google Patents
プラントの腐食抑制方法及びプラント Download PDFInfo
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- WO2012014894A1 WO2012014894A1 PCT/JP2011/066969 JP2011066969W WO2012014894A1 WO 2012014894 A1 WO2012014894 A1 WO 2012014894A1 JP 2011066969 W JP2011066969 W JP 2011066969W WO 2012014894 A1 WO2012014894 A1 WO 2012014894A1
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- plant
- corrosion
- protective substance
- structural material
- treated water
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/08—Regulation of any parameters in the plant
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
- C23C18/1208—Oxides, e.g. ceramics
- C23C18/1216—Metal oxides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1229—Composition of the substrate
- C23C18/1241—Metallic substrates
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
- C23F11/185—Refractory metal-containing compounds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K21/00—Steam engine plants not otherwise provided for
- F01K21/06—Treating live steam, other than thermodynamically, e.g. for fighting deposits in engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
- F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/28—Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core
- G21C19/30—Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core with continuous purification of circulating fluent material, e.g. by extraction of fission products deterioration or corrosion products, impurities, e.g. by cold traps
- G21C19/307—Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core with continuous purification of circulating fluent material, e.g. by extraction of fission products deterioration or corrosion products, impurities, e.g. by cold traps specially adapted for liquids
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Definitions
- the present invention relates to a method for inhibiting corrosion of piping and equipment constituting a plant, and the plant.
- Thermal power plants and nuclear power plants have a system that drives a turbine with steam generated by a steam generator and returns condensate to the steam generator. Since piping and equipment of these systems may be damaged by corrosion during operation, measures have been taken to reduce corrosion.
- measures such as supply water management and water treatment chemical management are taken as measures to prevent impurities from entering the system.
- measures are taken in order to suppress corrosion of equipment and pipes constituting the system.
- measures are taken for deoxidizing and reducing atmosphere by pH control using a pH adjusting agent or injection of hydrazine.
- installation and proper operation of a desalinator that removes introduced impurities outside the system installation of a clean-up system, a steam generator blowdown recovery system, and installation of a deaerator to reduce dissolved oxygen, etc.
- Various measures have been taken.
- the deaerator is installed to deaerate the circulating water of the system and reduce oxygen transfer to the steam generator.
- the deaerator functions to suppress an increase in the corrosion potential of the structural material due to oxygen contribution. When the oxygen concentration increases, intergranular corrosion cracking, stress corrosion cracking, and the like due to potential increase occur.
- elution of metal ions from pipes is a typical phenomenon that occurs in high-temperature water.
- the elution of metal ions has various effects such as operational problems due to corrosion of structural materials, piping and other members, and an increase in maintenance frequency.
- the eluted metal ions are deposited and deposited as oxides on the surface of the piping in the system and at a high temperature site such as a steam generator, and a phenomenon of corrosion cracking due to an increase in potential occurs. Further, since heat transfer is reduced due to the attached oxide, periodic removal by chemical cleaning is required.
- pH control is performed by injecting chemicals such as ammonia and hydrazine for deaeration to reduce iron elution from the system and prevent iron from flowing into the steam generator. Have taken.
- JP 2010-96534 A Japanese Patent No. 3492144
- the conventional corrosion control means requires various devices such as a deaerator and a chemical injection / control device in order to suppress corrosion, and it is necessary to perform chemical concentration control and strict water quality management.
- various devices such as a deaerator and a chemical injection / control device in order to suppress corrosion, and it is necessary to perform chemical concentration control and strict water quality management.
- the equipment is enlarged and the operation control is complicated, there is a problem that the equipment cost and the operation cost of the plant become high.
- the present invention has been made in consideration of such circumstances. By attaching a protective substance to a structural material of a system having a gas generator and a turbine, the plant cost and operation cost can be kept low.
- An object of the present invention is to provide a corrosion control method and a plant.
- a method for inhibiting corrosion of a plant provides the non-degassing process in a plant in which non-degassed treated water circulates in a system having a steam generator, a turbine, a condenser, and a heater.
- a protective substance is attached to the structural material of the system that comes into contact with the air-treated water.
- the facility cost and operation cost of the plant can be kept low.
- the secondary system includes a nuclear reactor 1, a steam generator 2, a high pressure turbine 3, a moisture separation heater 4, a low pressure turbine 5, a condenser 6, a low pressure heater 7, and a high pressure heater 8. , A high-temperature desalter (purification facility) 9 and a high-temperature filter (purification facility) 10.
- the condenser 6 includes those provided with a low-temperature purification facility (demineralizer + filter) on the downstream side thereof.
- Non-degassed treated water circulates in the secondary system.
- Non-degassed treated water is circulating water that is not subjected to degassing treatment by a deaerator and injection of a drug for degassing such as hydrazine by a drug injection device.
- the piping constituting the system and the surface of the steam generator 2, the low pressure heater 7, the high pressure heater 8, and the like, that is, the surface of the structural material in contact with the non-degassed treated water are protected.
- the substance is deposited by known means.
- the material of the structural material is composed of one or more of steel, non-ferrous steel, non-ferrous metal, or weld metal depending on the type of device or the location in the device.
- protective substances oxidation of metal elements selected from Ti, Y, La, Zr, Fe, Ni, Pd, U, W, Cr, Zn, Co, Mn, Cu, Ag, Al, Mg, Pb Substances, hydroxides, carbonic acid compounds, acetic acid compounds and oxalic acid compounds are used.
- metal elements selected from Ti, Y, La, Zr, Fe, Ni, Pd, U, W, Cr, Zn, Co, Mn, Cu, Ag, Al, Mg, Pb
- hydroxides, carbonic acid compounds, acetic acid compounds and oxalic acid compounds are used.
- the protective substance formed in piping and various apparatuses may be one type, you may combine multiple types.
- a titanium-based protective substance for example, titanium oxide (TiO 2 ) 18 is provided on the surface of the steam generator 17, and an yttrium-based protective property is provided on the surface of the pipe 13.
- a lanthanum-based protective substance 16 for example, lantana (La 2 O 3 )
- La 2 O 3 lantana
- Y 2 O 3 yttria
- FIG. 2 is a conceptual diagram of the protective substance 12 attached to the structural material 11.
- the protective substance 12 may be attached by using various known means such as spraying, applying by application, or attaching a liquid containing the protective substance to piping or equipment. Can do. Adhesion is appropriately performed before plant operation or during periodic inspection according to the degree of deterioration of the coating.
- the deaerator installed in the conventional secondary system is installed to reduce the oxygen transfer to the steam generator by degassing the circulating water of the system, and contributes to oxygen. It plays the function of suppressing the rise in the corrosion potential of structural materials.
- the present inventors pay attention to this point, and have newly found out that by adopting the above-described configuration, the secondary system deaerator that has been conventionally required can be omitted.
- the protective substance attached to the piping and the secondary system equipment becomes a barrier for oxygen diffusion in the system water, and the amount of oxygen reaching the surface of the structural material is reduced, thereby increasing the corrosion potential due to oxygen contribution. Since it becomes possible to maintain the surface of the structural material at a low potential, non-deaerated treated water can be used as the circulating water of the system.
- FIG. 3 is a diagram showing a corrosion amount ratio of the structural material 11 to which the protective material 12 of the present embodiment is attached to the structural material (peeling material) to which the protective material is not attached.
- any protective substance in this example, TiO 2 , Y 2 O 3 , La 2 O 3
- any protective substance in this example, TiO 2 , Y 2 O 3 , La 2 O 3
- a significant decrease in the amount of corrosion was confirmed.
- FIG. 4 is a diagram showing a corrosion amount ratio between a peeling material and high-temperature water (neutral, acidic, alkaline) having different water qualities and the structural material 11 to which the protective substance 12 of the present embodiment is attached.
- FIG. 5 is a diagram showing a corrosion amount ratio between the stripping material and the structural material of the present embodiment when the temperature of the system water is changed.
- the normal stripping material undergoes corrosion due to oxidation, but the structural material to which the protective substance of the present embodiment is attached has a corrosion suppressing effect by suppressing oxygen diffusion.
- the weight ratio of corrosion to the peeled material hardly changes.However, as the temperature increases, the oxidation reaction proceeds and the amount of corrosion increases. It shows that it becomes.
- the protective substance of the present embodiment has a remarkable corrosion inhibition effect at the plant operating temperature.
- FIG. 6 is a diagram showing the adhesion amount ratio between the stripping material and the structural material to which the protective substance of the present embodiment is adhered when particulate clad or ions are present in the system water.
- the zeta potential of the particles contributes to the adhesion.
- a normal metal oxide has a positive value when acidic, an isoelectric point (0) near neutrality, and a negative value when alkaline.
- the test is carried out under alkaline water condition, and the clad has a negative potential.
- the protective substance also has a negative potential in the alkaline region, and electrostatic repulsion with the clad acts.
- the corrosion potential on the surface of the structural material becomes an oxygen diffusion barrier due to the adhesion of a protective substance, the corrosion potential also works stably.
- the influence of the oxygen concentration on the material surface becomes significant in the adhesion or precipitation of ions. That is, it contributes to both precipitation due to the reaction between ions and oxygen and fluctuation of the corrosion potential.
- the adhesion or precipitation of ions is reduced by the effect of suppressing oxygen migration to the surface of the structural material.
- the roughness of the surface of the structural material contributes to clad adhesion. Since the adhesion of the protective substance fills the processing trace, the surface becomes smooth and the adhesion of the clad can be suppressed.
- FIG. 7 shows the corrosion amount ratio between the stripping material and the structural material 11 to which the protective substance 12 of this embodiment is adhered when degassed water and non-degassed water having a temperature of about 185 ° C. are used as system water.
- the structural material 11 to which the protective substance 12 of the present embodiment is attached does not have a significant corrosion inhibiting action with degassed treated water having a low dissolved oxygen concentration.
- the structural material 11 to which the protective substance 12 is attached has a remarkable corrosion inhibitory effect on non-degassed treated water having a high dissolved oxygen concentration.
- the protective substance of the present embodiment has a remarkable corrosion inhibitory effect at the operating temperature of the plant with respect to the system using non-deaerated treated water. Moreover, it turns out that the protective substance of this embodiment has a remarkable corrosion inhibitory effect, whatever the quality of system water, and also a clad and ion are contained in system water.
- non-deaerated treated water can be used as system water. Can be omitted.
- the corrosion inhibiting method and plant according to the present embodiment can reduce the size of the plant and reduce the equipment cost, and it is also necessary to control the deaerator, control dissolved oxygen during operation, and control various chemical concentrations. As a result, the operating cost can be greatly reduced.
- the protective material has been described.
- other metal elements listed above have similar effects.
- the protective substance has the same effect even when the metal element hydroxide, carbonate compound, acetic acid compound or oxalic acid compound is used.
- the present invention is not limited to this, and is applied to other plants, for example, the secondary system of a fast reactor, the primary system of a thermal power plant. Is possible.
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Abstract
Description
本実施形態の腐食抑制方法を加圧水型原子力プラントの二次系統に適用した例を、図1乃至図7を用いて説明する。
また、付着はプラント稼働前、又は被膜の劣化度に応じて定期検査時に適宜行われる。
上述したように、従来の二次系統に設置された脱気器は、系統の循環水を脱気処理することにより、蒸気発生器への酸素移行を低減するために設置されており、酸素寄与による構造材腐食電位の上昇を抑える機能を果たしている。
図3は保護性物質が付着されていない構造材(むく材)に対する本実施形態の保護性物質12を付着した構造材11の腐食量比を示す図である。
図4は、水質の異なる高温水(中性、酸性、アルカリ性)を用いた場合のむく材と本実施形態の保護性物質12を付着した構造材11との腐食量比を示す図である。
図5は、系統水の温度を変化させた場合のむく材と本実施形態の構造材との腐食量比を示す図である。
図6は、系統水中に粒子状のクラッド又はイオンが存在する場合のむく材と本実施形態の保護性物質を付着した構造材との付着量比を示す図である。
図7は系統水として温度が約185℃の脱気処理水と非脱気処理水を用いた場合のむく材と本実施形態の保護性物質12を付着した構造材11の腐食量比を示す図である。
上記効果確認試験1乃至5が示すように、非脱気処理水を用いる系統に対し、本実施形態の保護性物質は、プラントの稼働温度において顕著な腐食抑制効果を有する。また、系統水がどのような水質であっても、さらに、系統水中にクラッドやイオンが含まれても、本実施形態の保護性物質は、顕著な腐食抑制効果を有することがわかる。
Claims (6)
- 蒸気発生器、タービン、復水器及び加熱器を有する系統を非脱気処理水が循環するプラントにおける、前記非脱気処理水が接する前記系統の構造材に保護性物質を付着させたことを特徴とするプラント腐食抑制方法。
- 前記系統は、加圧水型原子力プラントの二次系統であり、
前記非脱気処理水は、脱気器による脱気処理及び薬剤注入機器による薬剤注入が行われない循環水であることを特徴とする請求項1記載のプラント腐食抑制方法。 - 前記構造材は、鉄鋼、非鉄鋼材、非鉄金属又は溶接金属であることを特徴とする請求項1記載のプラント腐食抑制方法。
- 前記保護性物質は、Ti、Y、La、Zr、Fe、Ni、Pd、U、W、Cr、Zn、Co、Mn、Cu、Ag、Al、Mg、Pbから選択された金属元素の酸化物、水酸化物、炭酸化合物、酢酸化合物又はシュウ酸化合物であることを特徴とする請求項1記載のプラント腐食抑制方法。
- 前記保護性物質は、TiO2、Y2O3又はLa2O3であることを特徴とする請求項4記載のプラント腐食抑制方法。
- 蒸気発生器、タービン、復水器及び加熱器を有する系統であって、非脱気処理水が循環する系統を備え、
前記非脱気処理水が接する前記系統の構造材に保護性物質を付着させたことを特徴とするプラント。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11812483.3A EP2600352B1 (en) | 2010-07-27 | 2011-07-26 | Method for suppressing corrosion of plant, and plant |
AU2011283740A AU2011283740B2 (en) | 2010-07-27 | 2011-07-26 | Method for suppressing corrosion of plant, and plant |
KR1020137002031A KR20130060259A (ko) | 2010-07-27 | 2011-07-26 | 플랜트의 부식 억제 방법 및 플랜트 |
CA2808017A CA2808017C (en) | 2010-07-27 | 2011-07-26 | A plant and a method for suppressing corrosion in the plant |
US13/812,368 US10006127B2 (en) | 2010-07-27 | 2011-07-26 | Method for suppressing corrosion in plant and plant |
MX2013000865A MX2013000865A (es) | 2010-07-27 | 2011-07-26 | Metodo para suprimir la corrosion en una planta de proceso , y planta de proceso. |
CN201180036521.7A CN103026420B (zh) | 2010-07-27 | 2011-07-26 | 用于抑制设备中腐蚀的方法和设备 |
RU2013108435/06A RU2535423C2 (ru) | 2010-07-27 | 2011-07-26 | Способ подавления коррозии в установке и установка, в которой использован указанный способ |
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JP2010168289A JP4810617B1 (ja) | 2010-07-27 | 2010-07-27 | プラントの腐食抑制方法及びプラント |
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Cited By (2)
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CN104137186A (zh) * | 2012-02-15 | 2014-11-05 | 韩国水力原子力株式会社 | 减少污垢的蒸汽发生器以及减少污垢的蒸汽发生器的管板制作方法 |
JP2018512319A (ja) * | 2015-03-16 | 2018-05-17 | ヴァレオ・シャルター・ウント・ゼンゾーレン・ゲーエムベーハー | 自律運転モード中に自動車両用の通信装置を操作するための方法、通信装置、並びに自動車両 |
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US8933375B2 (en) | 2012-06-27 | 2015-01-13 | Asm Ip Holding B.V. | Susceptor heater and method of heating a substrate |
JP6005548B2 (ja) * | 2013-02-26 | 2016-10-12 | 日立Geニュークリア・エナジー株式会社 | 沸騰水型原子力プラントの貴金属注入方法 |
US20140140465A1 (en) | 2012-11-19 | 2014-05-22 | Hitachi-Ge Nuclear Energy Ltd. | Platinum Oxide Colloidal Solution, Manufacturing Method Therefor, Manufacture Apparatus Thereof, and Method of Injection Noble Metal of Boiling Water Nuclear Power Plant |
JP6579894B2 (ja) * | 2015-10-01 | 2019-09-25 | 三菱日立パワーシステムズ株式会社 | 一酸化窒素分解装置、発電システム |
KR102460522B1 (ko) * | 2020-08-20 | 2022-10-31 | 한국과학기술원 | 고체산화물 연료전지 Hot-BOP에 적용되는 복합 코팅층 |
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EP2600352A1 (en) | 2013-06-05 |
JP2012026967A (ja) | 2012-02-09 |
AU2011283740A1 (en) | 2013-02-28 |
US20130182814A1 (en) | 2013-07-18 |
RU2535423C2 (ru) | 2014-12-10 |
CA2808017C (en) | 2016-03-22 |
KR20130060259A (ko) | 2013-06-07 |
US10006127B2 (en) | 2018-06-26 |
EP2600352A4 (en) | 2015-07-01 |
RU2013108435A (ru) | 2014-09-10 |
CN103026420A (zh) | 2013-04-03 |
MX2013000865A (es) | 2013-06-05 |
CA2808017A1 (en) | 2012-02-02 |
JP4810617B1 (ja) | 2011-11-09 |
AU2011283740B2 (en) | 2014-05-22 |
CN103026420B (zh) | 2015-11-25 |
EP2600352B1 (en) | 2019-08-21 |
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