JPH11236689A - Water treating apparatus for power generating plant and water treatment - Google Patents

Water treating apparatus for power generating plant and water treatment

Info

Publication number
JPH11236689A
JPH11236689A JP4370298A JP4370298A JPH11236689A JP H11236689 A JPH11236689 A JP H11236689A JP 4370298 A JP4370298 A JP 4370298A JP 4370298 A JP4370298 A JP 4370298A JP H11236689 A JPH11236689 A JP H11236689A
Authority
JP
Japan
Prior art keywords
feed water
water heater
oxygen
drain
pressure feed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4370298A
Other languages
Japanese (ja)
Inventor
Toshio Kanbara
Nobuo Shimono
展雄 下野
登志夫 神原
Original Assignee
Babcock Hitachi Kk
バブコック日立株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Babcock Hitachi Kk, バブコック日立株式会社 filed Critical Babcock Hitachi Kk
Priority to JP4370298A priority Critical patent/JPH11236689A/en
Publication of JPH11236689A publication Critical patent/JPH11236689A/en
Application status is Pending legal-status Critical

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors
    • Y02E30/40Other aspects relating to nuclear fission

Abstract

PROBLEM TO BE SOLVED: To prevent corrosion by injecting oxygen to a low pressure and high pressure feed water heater drain line to increase the oxygen concentration in equipments and pipe lines. SOLUTION: In a plant applying an oxygen treating method as the corrosion countermeasure, an oxygen injection pipe line 26 for injecting oxygen to the low pressure feed water heater 8 and the high pressure feed water heater 13, which are installed in a water feed line, is provided and oxygen is injected to the drain line of each feed water heater. Alternatively, steam from a bleeding pipe line 19 is supplied to the inside of the low pressure feed water heater 8 and the high pressure feed water heater 13, which are installed in the water feed line, and the steam is heat-exchanged with a feed water in a water feed pipe line arranged in each feed water heater, the drain of steam is introduced into drain lines 16, 17 and oxygen is injected to a part of a liquid phase in the inside of each feed water heater separated into a gas phase and the liquid phase.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、低圧給水加熱器及び高圧給水加熱器を有する発電プラントの水処理に係わり、特に発電プラント系統機器及び配管等の防食を行う発電プラントの水処理装置及び水処理方法に関する。 The present invention relates to relates to a water treatment of the power plant having a low-pressure feed water heater and a high pressure feedwater heater, in particular water treatment device and water of the power plant system equipment and power plant for performing the corrosion of piping It relates to a process for the treatment.

【0002】 [0002]

【従来の技術】低圧給水加熱器及び高圧給水加熱器を有する火力発電プラント、加圧水型原子力発電プラント及びその他の発電プラントにおいては、給水系統内の酸素を脱気して、その濃度を10ppb以下にして、適量のアルカリ薬品(NH 4 OH、N 24 )を添加する水処理を実施して、給水系統の機器及び配管等の内部の腐食を防止している。 BACKGROUND OF THE INVENTION thermal power plant having a low-pressure feed water heater and a high pressure feed water heater, a pressurized water nuclear power plant and other power plant, and degassed oxygen in water in the system, and its concentration below 10ppb Te, an appropriate amount of alkali chemicals (NH 4 OH, N 2 H 4) was performed with water treatment for adding, to prevent the internal corrosion of the equipment and piping of the water system.

【0003】しかしながら、これらの発電プラントは長年の使用により構成材料である鉄鋼材及び銅合金から溶出した腐食生成物がボイラ14、蒸気発生器21、タービン1及び高圧給水加熱器13等に付着、析出して各機器のオーバーヒート、熱交換率の低下及びタービン出力の低下等の種々の原因となるので定期的に腐食生成物を除去している。 However, these power plant corrosion products eluted from ferrous material and a copper alloy is the material with the use of many years boiler 14, the steam generator 21, attached to the turbine 1 and the high-pressure feed water heater 13 or the like, It precipitated overheating of the devices, since the variety of causes such as reduced lowering of the heat exchange efficiency and turbine output is removed periodically corrosion products.

【0004】一方、沸騰水型原子力発電プラントの運転経験から給水系統の給水中の酸素濃度はむしろ多い方が腐食が少ないことが分かった。 [0004] On the other hand, the concentration of oxygen in the water supply of the water supply system from the operating experience of the boiling water nuclear power plant Those who rather often it was found that the corrosion is small. また、米国特許第566 In addition, US Pat. No. 566
5725号明細書によれば、沸騰水型原子力発電プラントの場合、酸素濃度を50〜30000ppb範囲で、 According to 5725 Pat, if the boiling water nuclear power plant, the oxygen concentration in 50~30000ppb range,
特に100〜300ppbの酸素量を含ませると、従来の酸素濃度10ppb以下の場合より腐食量は1/10 In particular the inclusion of the amount of oxygen 100~300Ppb, the amount of corrosion than for the less conventional oxygen concentration 10 ppb 1/10
以下になると報告されている。 It has been reported that less than or equal to.

【0005】また、特開昭58−207378号公報によれば、沸騰水型原子力発電プラントでは、復水昇圧ポンプ7及び脱気器貯水槽10と脱気器貯水槽の下流に酸素を注入すれば、給水系統の機器や配管の防食が達成できると報告されている。 Further, according to JP-A-58-207378, the boiling water nuclear power plant, by implanting oxygen downstream of the condensate booster pump 7 and deaerator water tank 10 and the deaerator water tank if, water supply systems of equipment and piping of corrosion protection has been reported that can be achieved.

【0006】火力プラントの再開動作においては、酸素処理法には、完全な中性水を添加する中性水処理と、系統材料の炭素鋼の腐食抑制とともに復水器や低圧給水加熱器に使用されている銅合金を含めた腐食抑制の観点から、給水のpHを8.0〜9.0に高め、同時に酸素を注入する複合水処理と、が有る。 [0006] In resuming the operation of the thermal power plant, the oxygen treatment, the neutral water treatment for adding a complete neutral water, using the condenser and the low-pressure feed water heater along with the corrosion-inhibiting carbon steel system material from the viewpoint of corrosion inhibition, including copper alloy that is, increase the pH of the water to 8.0-9.0, and complex water treatment which simultaneously injecting oxygen there.

【0007】酸素処理法の中の中性水処理については、 [0007] For the neutral water treatment in the oxygen treatment method,
原子力発電プラント(BWR)に対し採用されており、 Has been adopted for the nuclear power plant (BWR),
日本国内でも多数の実績を有している。 Even in Japan has a number of achievements. 酸素処理法の貫流ボイラへの適用は、ドイツ、ソ連、韓国等において既に実施されており、ボイラの差圧上昇防止にも良好な結果が得られている。 Application to once-through boiler in the oxyfuel process methods, Germany, Soviet Union, have already been implemented in South Korea, etc., good results have been obtained even in the differential pressure rise prevention of the boiler. また、国内でも確認試験を行い良好な結果が得られたため、現在適用を拡げているところである。 In addition, because the good results confirm test in the country has been obtained, it is where you are expanding the currently applied.

【0008】しかし、プラント起動時及び通常運転時、 [0008] However, the plant start-up and during normal operation,
低圧給水加熱器8及び高圧給水加熱器13では、不溶存ガスによる伝熱阻害が発生するのを防止するために、常時空気抜き弁を開して、前記不溶存ガスをベントしている(抜いている)。 In low-pressure feed water heater 8 and the high-pressure feed water heater 13, in order to prevent the heat transfer inhibition occurs due to non-dissolved gas, and always purge valve opens, and vent the non-dissolved gas (remove and yl).

【0009】この時、凝縮ドレンと蒸気中の気液分配の関係から、ドレン中には殆ど酸素が入らないため、ドレン系統の酸素濃度が下がり、ドレン系統内の機器の腐食に対して十分な効果を発揮するまでに至らなかった。 [0009] At this time, from the relationship of gas-liquid distribution of the condensate drain and steam, because during drain hardly enter oxygen lowers the oxygen concentration in the drain system, sufficient for corrosion of the equipment in the drain line It did not result in up to be effective.

【0010】図4に、酸素の気液分配平衡定数を示す(「日立評論」、阿部外、昭和38年3月、に記載されている)。 [0010] Figure 4 shows an oxygen gas-liquid distribution equilibrium constant ( "Hitachi Review", are described Abe outer, 1963 March, in). これによると、例えば、250°の蒸気温度では分配平衡定数(蒸気中のO2/水分中のO2)は1. According to this, for example, at a steam temperature of 250 ° distribution equilibrium constant (O2 in O2 / water vapor) is 1.
0E+03であるが、熱交換した後の温度が略80°に低下したときには、その分配平衡定数が1.0E+05 Is a 0E + 03, when the temperature after the heat exchanger has dropped to approximately 80 °, the distribution equilibrium constant is 1.0E + 05
と大きくなる。 To be larger. このことは水になれば水分中のO2が少なくなることを表す。 This indicates that less is O2 in the water if the water. 即ち、図1に示す給水加熱器8, That is, feed water heater 8 shown in FIG. 1,
13からのドレン管16,17の水分には、抽気配管中の蒸気に比べて、酸素濃度が低下することを意味している。 The water drain pipe 16, 17 from 13, as compared with the vapor in the extraction pipe, the oxygen concentration is meant to decrease.

【0011】 [0011]

【発明が解決しようとする課題】従来技術は、低圧給水加熱器及び高圧給水加熱器起動後、給水加熱器の内部でのドレン系統の給水の酸素濃度が低下し、腐食が発生することに対して配慮されておらず、機器、配管の防食に対して問題があった。 THE INVENTION Problems to be Solved The prior art, after starting low-pressure feed water heater and a high pressure feedwater heater, the oxygen concentration of the feed water of the drain lines in the interior of the feed water heater is reduced, relative to the corrosion occurs not been consideration Te, there has been a problem instruments, for the anti-corrosion of the pipe.

【0012】本発明の目的は、低圧給水加熱器ドレン系統及び高圧給水加熱器ドレン系統へ酸素を注入することで、機器配管の酸素濃度を高め腐食を防止するものである。 An object of the present invention is to inject the oxygen into the low-pressure feed water heater drain system and the high-pressure feed water heater drain system, thereby preventing the increase corrosion oxygen concentration equipment piping.

【0013】 [0013]

【課題を解決するための手段】前記課題を解決するために、本発明は主として次のような構成を採用する。 In order to solve the above problems SUMMARY OF THE INVENTION The present invention mainly adopts the following configuration.

【0014】プラントの防食対策として酸素処理法を採用しているプラントにおいて、給水系統に設置されている低圧給水加熱器および高圧給水加熱器へ酸素を注入する酸素注入配管を設け、各給水加熱器のドレン系統に酸素を注入する発電プラントの水処理装置。 [0014] In plants employing oxygen treatment as corrosion protection of the plant, the oxygen injection pipe for injecting the oxygen provided to the low-pressure feed water heater and high-pressure feed water heater installed in the water system, the feed water heater water treatment apparatus of the power plant to inject oxygen into the drain system of.

【0015】また、プラントの防食対策として酸素処理法を採用しているプラントにおいて、給水系統に設置されている低圧給水加熱器および高圧給水加熱器の内部に抽気配管からの蒸気を供給し、前記蒸気を各給水加熱器内に配設された給水配管内の給水と熱交換し、前記蒸気のドレンをドレン系統に導き、気相と水相に分離された各給水加熱器内部の水相の部分に酸素を注入する発電プラントの水処理方法。 Further, in plants employing oxygen treatment as corrosion protection of the plant, supplying the vapor from the inside to the extraction pipe of the low-pressure feed water heater and high-pressure feed water heater installed in the water system, the the vapor feed water heat exchanger in the water supply pipe disposed in the feed water heater, direct the drain of the steam in the drain system, each feed water heater inside the aqueous phase separated in the gas phase and the aqueous phase water treatment method of a power plant for injecting oxygen into portions.

【0016】 [0016]

【発明の実施の形態】本発明の一実施形態を図1の火力プラント系統図において説明する。 One embodiment of the embodiment of the present invention will be described in the thermal power plant system diagram of FIG. 図1において、1はタービン、2は復水器、3は復水ホットウエル、4は復水配管、5は復水ポンプ、6は復水脱塩装置、7は復水昇圧ポンプ、8は低圧給水加熱器、9は脱気器脱気室、 In Figure 1, 1 is the turbine, 2 condenser, the condensate hot well 3, the condensate pipe, 5 is a condensate pump 4, 6 is a condensate demineralizer, 7 condensate booster pump, the 8 low-pressure feed water heater, 9 deaerator degassing chamber,
10は脱気器貯水槽、11は給水配管、12は給水ポンプ、13は高圧給水加熱器、14はボイラ、15は蒸気配管、16は低圧給水加熱器ドレン管、17は高圧給水加熱器ドレン管、18はドレンポンプ、19は抽気配管、20は酸素注入装置、26は低圧給水加熱器ドレン管酸素注入装置、をそれぞれ表す。 10 deaerator water tank, 11 is a water supply pipe, 12 water supply pump, 13 a high-pressure feed water heater 14 is a boiler 15 the steam pipe, 16 is a low-pressure feed water heater drain pipe, 17 a high-pressure feed water heater drain tube, 18 a drain pump, 19 bleed pipe, 20 oxygen injection device, 26 denotes a low-pressure feed water heater drain pipe oxygen injection device, respectively.

【0017】図1の工程について説明すると、給水は復水器2、復水ホットウエル3、復水配管4、復水ポンプ5、復水脱塩装置6、復水昇圧ポンプ7、低圧給水加熱器8、脱気器脱気室9、脱気器貯水槽10、給水配管1 [0017] Referring to the process of FIG. 1, the water supply is a condenser 2, a condensate hot well 3, condensate piping 4, a condensate pump 5, condensate demineralizer 6, condensate booster pump 7, a low-pressure feed water heater vessel 8, deaerator deaerating chamber 9, the deaerator water tank 10, the water supply pipe 1
1、給水ポンプ12、高圧給水加熱器13、ボイラ14 1, the water supply pump 12, high-pressure feed water heater 13, boiler 14
に入り、ここで蒸気に変換された後、蒸気配管15を通りタービン1に流入して仕事をして再び復水器2に戻る。 Cored, wherein after being converted to steam, returns to the condenser 2 by the work flow of the steam pipe 15 as the turbine 1.

【0018】図2は加圧水型原子力発電プラント系統図である。 [0018] FIG. 2 is a pressurized water reactor nuclear power plant system diagram. 図2において、1〜13及び15〜20は図1 2, 1-13 and 15-20 Figure 1
と同様であり、21は蒸気発生器、22は原子炉、23 It is similar to, 21 steam generator, 22 is a reactor, 23
は一次冷却材配管、24は一次冷却材ポンプ、25は加圧器25、をそれぞれ表す。 Respectively represent the primary coolant piping, 24 is a primary coolant pump, 25 pressurizer 25.

【0019】図2の工程について説明すると、図1と同じ工程を通り、高圧給水加熱器13を経た給水は蒸気発生器21に入り、ここで原子炉22で加熱された後、蒸気配管15を通りタービン1に流入して仕事をして再び復水器2に戻る。 The process of FIG. 2 will Explaining, through the same steps as FIG. 1, water which has flowed through the high-pressure feed water heater 13 enters the steam generator 21, after being heated where the reactor 22, the steam pipe 15 Back again to the condenser 2 by the work flow as the turbine 1.

【0020】図1及び図2において、起動時、通常運転時とも、低圧給水加熱器ドレン管16及び高圧給水加熱器ドレン管17へ酸素注入装置26a及び26bを設けて、酸素ガスまたは過酸化水素を注入することによってドレン系統の機器や配管の腐食をすることができる。 [0020] In FIGS. 1 and 2, startup, both during normal operation, is provided an oxygen injection device 26a and 26b to the low-pressure feed water heater drain pipe 16 and the high-pressure feed water heater drain pipe 17, oxygen gas or hydrogen peroxide it can be the corrosion of equipment and piping of the drain system by injecting.

【0021】図3に、低圧給水加熱器8と高圧給水加熱器13の具体的構造を示し、加熱器8,13内に給水配管11が配置されている。 [0021] Figure 3 shows a specific structure of low-pressure feed water heater 8 and the high-pressure feed water heater 13, water supply pipe 11 is disposed in the heater 8,13. タービンで使用された蒸気が抽気配管19に供給され、供給された蒸気が給水配管内の水と熱交換されて、水となってドレン配管に導かれる。 The steam used in the turbine is supplied to the bleed pipe 19, the supplied steam is water and heat exchange in the water supply pipe is led a water to a drain pipe. 加熱器8,13の内部は抽気配管からの蒸気が気相と液相に分かれる。 Internal heater 8 and 13 are steam extracted from the extraction piping divided into gas and liquid phases. 酸素注入配管26a,26bは加熱器8,13に接続され、特に、加熱器内部の液相に酸素が注入されるようになっていて、ドレンに酸素が効率的に注入されることとなる。 Oxygen injection pipe 26a, 26b is connected to the heater 8 and 13, in particular, have become oxygen is injected into the heater inside the liquid phase, so that the oxygen into the drain is efficiently injected.

【0022】本発明の実施形態によれば、低圧給水加熱器及び高圧給水加熱器を有する発電プラント(火力、加圧水型原子力及び高速増殖炉プラント)の低圧給水加熱器ドレン管及び高圧給水加熱器ドレン管の防食が達成できると共に、系統水中のFe濃度が大幅減少できるので、腐食生成物除去のための酸洗間隔の延長、排水処理費の削減、復水脱塩樹脂再生及び補修費の削減、起動時ドレンの金属成分濃度の早期安定、等の効果がある。 According to an embodiment of the present invention, a power plant (thermal, pressurized water nuclear and fast breeder reactor plant) low-pressure feed water heater drain pipe and the high-pressure feed water heater drain of having a low-pressure feed water heater and a high pressure feedwater heater with corrosion protection can be achieved of the tube, the Fe concentration of the system water can be greatly reduced, extension of pickling intervals for corrosion product removal, reduction of waste water treatment costs, reduction of condensate demineralizer resin regeneration and repair costs, early stability of the metal component concentration of the startup drain, the effect and the like.

【0023】 [0023]

【発明の効果】従来の技術は、低圧給水加熱器起動後、 [Effect of the Invention] The prior art after starting low-pressure feed water heater,
給水加熱器内で給水の酸素濃度が低下し、腐食が発生することに対して配慮されておらず、機器、配管の防食に対して問題があった。 Oxygen concentration in the feed water within the feed water heater is lowered, not taken into consideration with respect to the corrosion occurs, the device has a problem with respect to corrosion of the pipe.

【0024】本発明は、低圧および高圧給水加熱器ドレン系統へ酸素を注入することで、機器配管の酸素濃度を高め腐食を防止する効果を奏するものである。 The present invention is to inject the oxygen into the low and high pressure feed water heater drain system, in which the effect of preventing the increase corrosion oxygen concentration equipment piping.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の実施形態に係る、火力プラントの給水加熱器のドレン系統への酸素注入を示す図である。 [1] according to an embodiment of the present invention, showing the oxygen injection into the drain line feed heater of a thermal power plant.

【図2】本発明の実施形態に係る、加圧水型原子力発電プラントの給水加熱器のドレン系統への酸素注入を示す図である。 [2] according to an embodiment of the present invention, showing the oxygen injection into the drain line feed heater of a pressurized water nuclear power plant.

【図3】給水加熱器への酸素注入を示す具体的構造を示す図である。 3 is a diagram showing a specific structure showing oxygen injection into the feed water heater.

【図4】酸素の気液分配平衡定数と温度の関係を示す図である。 4 is a diagram showing the relationship between oxygen gas-liquid distribution equilibrium constant and temperature.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 タービン 2 復水器 3 復水ホットウエル 4 復水配管 5 復水ポンプ 6 復水脱塩装置 7 復水昇圧ポンプ 8 低圧給水加熱器 8C 低圧給水加熱器空気抜き弁 9 脱気器脱気室 10 脱気器貯水槽 11 給水配管 12 給水ポンプ 13 高圧給水加熱器 14 ボイラ 15 蒸気配管 16 低圧給水加熱器ドレン管 17 高圧給水加熱器ドレン管 18 ドレンポンプ 19 抽気配管 20 酸素注入装置 21 蒸気発生器 22 原子炉 23 一次冷却材配管 24 一次冷却材ポンプ 25 加圧器 26 低圧給水加熱器ドレン管酸素注入装置 1 turbine 2 condenser 3 condensate hot well 4 condensate pipe 5 condensate pump 6 condensate demineralizer 7 condensate booster pump 8 low-pressure feed water heater 8C low-pressure feed water heater purge valve 9 deaerator deaerating chamber 10 deaerator water tank 11 water supply pipe 12 feed water pump 13 high-pressure feed water heater 14 the boiler 15 the steam pipe 16 low-pressure feed water heater drain pipe 17 high-pressure feed water heater drain pipe 18 drain pump 19 bleed pipe 20 oxygen injection device 21 steam generator 22 reactor 23 primary coolant pipe 24 primary coolant pump 25 pressurizer 26 low-pressure feed water heater drain pipe oxygen implanter

Claims (2)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 プラントの防食対策として酸素処理法を採用しているプラントにおいて、 給水系統に設置されている低圧給水加熱器および高圧給水加熱器へ酸素を注入する酸素注入配管を設け、 各給水加熱器のドレン系統に酸素を注入することを特徴とする発電プラントの水処理装置。 1. A plant employing oxygen treatment as corrosion protection of the plant, the oxygen injection pipe for injecting the oxygen provided to the low-pressure feed water heater and high-pressure feed water heater installed in the water system, the water supply water treatment apparatus of the power plant, which comprises implanting oxygen into the drain line of the heater.
  2. 【請求項2】 プラントの防食対策として酸素処理法を採用しているプラントにおいて、 給水系統に設置されている低圧給水加熱器および高圧給水加熱器の内部に抽気配管からの蒸気を供給し、前記蒸気を各給水加熱器内に配設された給水配管内の給水と熱交換し、前記蒸気のドレンをドレン系統に導き、 気相と液相に分離された各給水加熱器内部の液相の部分に酸素を注入することを特徴とする発電プラントの水処理方法。 2. A plant employing oxygen treatment as corrosion protection of the plant, supplying the vapor from the inside to the extraction pipe of the low-pressure feed water heater and high-pressure feed water heater installed in the water system, the the vapor feed water heat exchanger in the water supply pipe disposed in the feed water heater, the drain of the steam leads to the drain system, the gas phase and the feed water heater is separated into the liquid phase inside the liquid phase water treatment method of the power plant, which comprises implanting oxygen into portions.
JP4370298A 1998-02-25 1998-02-25 Water treating apparatus for power generating plant and water treatment Pending JPH11236689A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4370298A JPH11236689A (en) 1998-02-25 1998-02-25 Water treating apparatus for power generating plant and water treatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4370298A JPH11236689A (en) 1998-02-25 1998-02-25 Water treating apparatus for power generating plant and water treatment

Publications (1)

Publication Number Publication Date
JPH11236689A true JPH11236689A (en) 1999-08-31

Family

ID=12671160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4370298A Pending JPH11236689A (en) 1998-02-25 1998-02-25 Water treating apparatus for power generating plant and water treatment

Country Status (1)

Country Link
JP (1) JPH11236689A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007512437A (en) * 2003-11-20 2007-05-17 ナルコ カンパニーNalco Company Method of inhibiting corrosion in hot water systems
CN101886804A (en) * 2010-05-26 2010-11-17 中国电力工程顾问集团华北电力设计院工程有限公司 All-backheating drainage system of heat supply network heater for supercritical concurrent boiler thermal power plant
CN102070214A (en) * 2010-11-29 2011-05-25 西安热工研究院有限公司 Oxygenation treatment method for water vapor system of thermal power plant
JP2014071076A (en) * 2012-10-01 2014-04-21 Japan Atom Power Co Ltd:The Piping wastage suppression system of secondary cooling system of pwr power generation station and method of the same
US8859038B2 (en) 2010-09-15 2014-10-14 Kabushiki Kaisha Toshiba Method for monitoring corrosion protection in power plant
US9583668B2 (en) 2000-11-29 2017-02-28 The Australian National University Semiconductor device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9583668B2 (en) 2000-11-29 2017-02-28 The Australian National University Semiconductor device
JP2007512437A (en) * 2003-11-20 2007-05-17 ナルコ カンパニーNalco Company Method of inhibiting corrosion in hot water systems
CN101886804A (en) * 2010-05-26 2010-11-17 中国电力工程顾问集团华北电力设计院工程有限公司 All-backheating drainage system of heat supply network heater for supercritical concurrent boiler thermal power plant
US8859038B2 (en) 2010-09-15 2014-10-14 Kabushiki Kaisha Toshiba Method for monitoring corrosion protection in power plant
CN102070214A (en) * 2010-11-29 2011-05-25 西安热工研究院有限公司 Oxygenation treatment method for water vapor system of thermal power plant
WO2012071923A1 (en) * 2010-11-29 2012-06-07 西安热工研究院有限公司 Method for processing water and steam system oxygenation in thermal power plant
JP2014071076A (en) * 2012-10-01 2014-04-21 Japan Atom Power Co Ltd:The Piping wastage suppression system of secondary cooling system of pwr power generation station and method of the same

Similar Documents

Publication Publication Date Title
RU2140589C1 (en) Process and facility for improving performance characteristics of steam and its mixing up in nuclear power system
EP1404489B1 (en) Improved scale conditioning method
EP0845438A1 (en) Oxygen scavenger and boiler water treatment chemical
FR2509714A1 (en) Method and apparatus for reducing alkaline calamine in water distillation equipment
US5754613A (en) Power plant
EP0155568A2 (en) Process for the cleaning flow-restricted areas of the secondary side of a steam generator
US5816048A (en) Method for utilizing acidic geothermal fluid for generating power in a rankine cycle power plant
Green et al. Materials performance in nuclear pressurized water reactor steam generators
CN1075874C (en) Thermal energy generator
US3663725A (en) Corrosion inhibition
KR20010023223A (en) Steam generator, especially waste heat recovery steam generator and method for operating said generator
CA1188594A (en) Method of scavenging dissolved oxygen in steam generating equipment using ammonia or amine neutralized erythorbic acid
US5601657A (en) Two-step chemical cleaning process
US5669220A (en) Method and device for operating the water/steam cycle of a thermal power station
EP0150981B1 (en) Method of vacuum degassing and refilling a reactor coolant system
EP0158566B1 (en) Process for eliminating deposits in a steam generator of a nuclear pressurized water reactor
Cheng Intergranular stress-assisted corrosion cracking of austenitic alloys in water-cooled nuclear reactors
US4057034A (en) Process fluid cooling system
CA1277877C (en) Device for degassing the condensate in the cycle of an electricity generating plant
US4732004A (en) Process for purifying and deaerating the condensate/feed water in the circulation system of a power-generating plant
US6588379B2 (en) Multi-stream energy source steam generator system
Kilian et al. Corrosion behaviour of reactor coolant system materials in nuclear power plants
JPS55106501A (en) Heat recovering method and apparatus for distillation
JPS5876115A (en) Method and apparatus for purifying liquid
US9165689B2 (en) Plant operation method and plant operation system

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040325

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050927

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20060207