JPH085779A - Degradation prevention device for ion exchanger resin for condensate purification system - Google Patents
Degradation prevention device for ion exchanger resin for condensate purification systemInfo
- Publication number
- JPH085779A JPH085779A JP6141830A JP14183094A JPH085779A JP H085779 A JPH085779 A JP H085779A JP 6141830 A JP6141830 A JP 6141830A JP 14183094 A JP14183094 A JP 14183094A JP H085779 A JPH085779 A JP H085779A
- Authority
- JP
- Japan
- Prior art keywords
- hydrogen peroxide
- condensate
- purification system
- ion exchange
- condensate purification
- 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.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、沸騰水型原子炉（以下
ＢＷＲと記す）原子力発電所において一次系冷却水を浄
化するためのイオン交換樹脂の劣化防止および長寿命化
を図るように構成した復水浄化系のイオン交換樹脂劣化
防止装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is constructed so as to prevent deterioration of ion exchange resin for purifying primary system cooling water and extend its life in a boiling water nuclear reactor (hereinafter referred to as BWR) nuclear power plant. The present invention relates to an ion exchange resin deterioration prevention device for a condensate purification system.
【０００２】[0002]
【従来の技術】ＢＷＲ原子力発電所においては原子炉の
炉心部で核加熱により発生した蒸気を主蒸気ラインを通
してタービン系へ送り、タービンを回転させ発電を行
う。タービンで仕事をした蒸気は復水器で復水となり、
この復水を復水ラインを通してイオン交換樹脂を用いた
復水浄化系で浄化し、浄化した純水を冷却材として給水
ラインを経て再び原子炉に導く循環システムを採ってい
る。2. Description of the Related Art In a BWR nuclear power plant, steam generated by nuclear heating in the core of a nuclear reactor is sent to a turbine system through a main steam line to rotate a turbine to generate electric power. The steam that worked in the turbine becomes condensed water in the condenser,
This condensate is purified through a condensate line by a condensate purification system using an ion exchange resin, and the purified pure water is used as a coolant to introduce the circulation system to the reactor again via the water supply line.
【０００３】原子炉の炉心部では冷却材である水は放射
線分解により酸素，水素，過酸化水素等を発生させる。
これらの放射線分解生成物は蒸気と随伴しタービン系に
導かれる。通常の運転ではガス状の酸素，水素はタービ
ン系に移行し易いが、過酸化水素は移行率が低く、ター
ビン系から復水浄化系に導かれる復水には過酸化水素が
ほとんど検出されない。In the core of a nuclear reactor, water as a coolant generates oxygen, hydrogen, hydrogen peroxide, etc. by radiolysis.
These radiolysis products are introduced into the turbine system together with steam. In normal operation, gaseous oxygen and hydrogen easily migrate to the turbine system, but hydrogen peroxide has a low migration rate, and hydrogen peroxide is hardly detected in the condensate introduced from the turbine system to the condensate purification system.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、原子炉
の停止時等において原子炉内の炉水を直接復水器に導い
て処理する場合には、高濃度の過酸化水素を含む水が復
水器を経てイオン交換樹脂を用いている復水浄化系に導
かれる。However, when the reactor water in the reactor is directly guided to the condenser for treatment when the reactor is shut down, the water containing a high concentration of hydrogen peroxide is condensed. It is led to a condensate purification system that uses an ion exchange resin through the vessel.
【０００５】この水はタービンからの蒸気ではなく、原
子炉内の炉水を直接導くため、原子炉の停止時において
は炉水温度が運転時より低くなっている。通常は下式に
より過酸化水素の熱分解が促進されるが、停止時はこの
熱分解がなく、特に高濃度の過酸化水素が存在する。 ２Ｈ2 Ｏ2 −−−−−→２Ｈ2 Ｏ＋Ｏ2 Since this water directly guides the reactor water in the reactor, not the steam from the turbine, the reactor water temperature is lower than that during operation when the reactor is stopped. Normally, the thermal decomposition of hydrogen peroxide is promoted by the following formula, but this thermal decomposition does not occur when the hydrogen peroxide is stopped, and particularly high concentration of hydrogen peroxide exists. 2H 2 O 2 −−−−− → 2H 2 O + O 2
【０００６】過酸化水素のイオン交換樹脂の劣化に及ぼ
す影響を図７により説明する。図７は過酸化水素を含有
する水と、過酸化水素を含まない水とをイオン交換樹脂
の押しつぶし強度を浸漬時間との関係で対比して示して
いる。図７から明らかなように過酸化水素を含む溶液中
にイオン交換樹脂を浸漬した場合は浸漬時間の増加によ
りイオン交換樹脂の押しつぶし強度が低下することが分
かる。The effect of hydrogen peroxide on the deterioration of the ion exchange resin will be described with reference to FIG. FIG. 7 shows the water containing hydrogen peroxide and the water not containing hydrogen peroxide in comparison with the crushing strength of the ion exchange resin in relation to the immersion time. As is clear from FIG. 7, when the ion exchange resin is dipped in the solution containing hydrogen peroxide, the crushing strength of the ion exchange resin decreases due to the increase in the immersion time.
【０００７】従来のＢＷＲの一次系水の循環システムに
は過酸化水素を分解または処理する装置が設置されてな
いため、高濃度の過酸化水素が復水浄化系に流入する恐
れがある。Since a device for decomposing or treating hydrogen peroxide is not installed in the conventional BWR primary water circulation system, a high concentration of hydrogen peroxide may flow into the condensate purification system.
【０００８】このように原子炉停止時等の炉水を直接復
水器に流入させる場合には高濃度の過酸化水素が復水浄
化系のイオン交換樹脂に導かれイオン交換樹脂を劣化さ
せるという課題がある。In this way, when the reactor water is directly flown into the condenser when the reactor is shut down, a high concentration of hydrogen peroxide is introduced into the ion exchange resin of the condensate purification system to deteriorate the ion exchange resin. There are challenges.
【０００９】本発明は上記課題を解決するためになされ
たもので、過酸化水素を含む溶液を直接、復水浄化系の
イオン交換樹脂に導くことがない復水浄化系のイオン交
換樹脂劣化防止装置を提供することにある。The present invention has been made in order to solve the above problems, and prevents deterioration of the ion exchange resin of the condensate purification system which does not directly lead the solution containing hydrogen peroxide to the ion exchange resin of the condensate purification system. To provide a device.
【００１０】[0010]
【課題を解決するための手段】本発明は沸騰水型原子炉
からタービンへ送られた蒸気を復水する復水器と、この
復水器から流出する復水をイオン交換樹脂で浄化する復
水浄化系とを接続する復水ラインに過酸化水素検出器を
バイパスして設けてなることを特徴とする。The present invention is directed to a condenser for condensing steam sent from a boiling water reactor to a turbine, and a condenser for purifying condensate flowing out of the condenser with an ion exchange resin. The hydrogen peroxide detector is bypassed in the condensate line connecting with the water purification system.
【００１１】[0011]
【作用】請求項１においては復水浄化系に流入する溶液
中の過酸化水素の濃度を過酸化水素検出器で計測し、過
酸化水素が検出された場合には復水浄化系への溶液の流
入を制限することができる。According to the present invention, the concentration of hydrogen peroxide in the solution flowing into the condensate purification system is measured by a hydrogen peroxide detector, and when hydrogen peroxide is detected, the solution to the condensate purification system is measured. The inflow of can be restricted.
【００１２】請求項２においては過酸化水素検出器から
の計測信号により過酸化水素が検出された場合はその溶
液を復水浄化系に導くのではなくバイパス系から廃棄物
処理系に導くことができる。In the second aspect, when hydrogen peroxide is detected by the measurement signal from the hydrogen peroxide detector, the solution may be introduced from the bypass system to the waste treatment system instead of being introduced to the condensate purification system. it can.
【００１３】請求項３においては過酸化水素検出器の計
測信号により過酸化水素が検出された場合には復水脱塩
器への流入水を過酸化水素分解装置に導くことができ
る。In the third aspect, when hydrogen peroxide is detected by the measurement signal of the hydrogen peroxide detector, the inflow water to the condensate demineralizer can be guided to the hydrogen peroxide decomposition device.
【００１４】請求項４においては過酸化水素分解装置に
白金，パラジウム，金，銀などの貴金属のコロイドや酸
化マンガンなどの金属酸化物を触媒として使用すること
により過酸化水素の分解が促進される。In the present invention, the decomposition of hydrogen peroxide is promoted by using a colloid of a noble metal such as platinum, palladium, gold or silver or a metal oxide such as manganese oxide as a catalyst in the hydrogen peroxide decomposition apparatus. .
【００１５】請求項５においては過酸化水素分解装置に
より過酸化水素を分解した際に生成する酸素を除去でき
る。請求項６においては酸素を真空脱気法または窒素等
の酸素を含まないガスによる暴気法により酸素を除去で
きる。In the fifth aspect, the oxygen generated when the hydrogen peroxide is decomposed can be removed by the hydrogen peroxide decomposition device. In the sixth aspect, oxygen can be removed by a vacuum degassing method or an aeration method using a gas containing no oxygen such as nitrogen.
【００１６】請求項７においては過酸化水素分解装置の
分解の高効率を確保するため、過酸化水素検出器での過
酸化水素の濃度を監視しながら過酸化水素分解装置へ流
入する炉水量を調整することができる。In order to secure high efficiency of decomposition of the hydrogen peroxide decomposer, the amount of reactor water flowing into the hydrogen peroxide decomposer is monitored while monitoring the concentration of hydrogen peroxide in the hydrogen peroxide detector. Can be adjusted.
【００１７】請求項８においては酸素除去装置の効率を
確保するために酸素除去装置の出口側に溶存酸素計を設
置して溶液酸素濃度が十分に低下されていることを確認
できるとともに、その酸素計の出力信号により酸素除去
装置への流入水の供給量を調整し、酸素除去の高効率を
保持できる。In the eighth aspect, in order to ensure the efficiency of the oxygen removing device, it is possible to confirm that the dissolved oxygen concentration is sufficiently reduced by installing a dissolved oxygen meter at the outlet side of the oxygen removing device, It is possible to adjust the supply amount of inflow water to the oxygen removing device by the output signal of the meter and maintain high efficiency of oxygen removing.
【００１８】過酸化水素の計測には比色法，化学発光
法，電気化学測定法等を用い、復水浄化系へ流入する過
酸化水素濃度を監視する。過酸化水素が検出された場合
には廃棄物処理系へ溶液が流れるように自動または手動
により流路が変更されるか、または、過酸化水素分解除
去装置に溶液が導かれて過酸化水素が除去され、その溶
液が復水浄化系に導かれるので、復水浄化系のイオン交
換樹脂の過酸化水素による劣化を防止することができ
る。A colorimetric method, a chemiluminescence method, an electrochemical measuring method or the like is used for measuring hydrogen peroxide, and the concentration of hydrogen peroxide flowing into the condensate purification system is monitored. When hydrogen peroxide is detected, the flow path is changed automatically or manually so that the solution flows to the waste treatment system, or the solution is guided to a hydrogen peroxide decomposition and removal device to remove hydrogen peroxide. Since it is removed and the solution is guided to the condensate purification system, it is possible to prevent the ion exchange resin of the condensate purification system from being deteriorated by hydrogen peroxide.
【００１９】[0019]
【実施例】図１を参照しながら本発明に係る復水浄化系
のイオン交換樹脂劣化防止装置の第１の実施例を説明す
る。図１はＢＷＲ型プラントの原子炉１，主蒸気ライン
２，復水器３，復水ライン25，復水浄化系４，給水ライ
ン５および廃棄物処理系（図示せず）に接続するバイパ
スラインの配管接続関係を概略的に示している。EXAMPLE A first example of the ion exchange resin deterioration preventing device of the condensate purification system according to the present invention will be described with reference to FIG. FIG. 1 is a bypass line connecting to a reactor of a BWR type plant 1, a main steam line 2, a condenser 3, a condensate line 25, a condensate purification system 4, a water supply line 5 and a waste treatment system (not shown). 2 schematically shows the pipe connection relationship of.
【００２０】ここで、第１の実施例ではとくに復水浄化
系４の上流側の復水ライン25に過酸化水素検出器６をバ
イパスして設置している。また、過酸化水素検出器６と
復水浄化系４の間の復水ライン25には復水浄化系バイパ
スバルブ７を有するバイパスライン26を接続している。
このバイパスライン26は廃棄物処理系（図示せず）に導
かれている。復水浄化系４にはイオン交換樹脂が充填さ
れた復水浄化装置が設置されている。In the first embodiment, the hydrogen peroxide detector 6 is installed in the condensate line 25 on the upstream side of the condensate purification system 4 so as to bypass it. A bypass line 26 having a condensate purification system bypass valve 7 is connected to the condensate line 25 between the hydrogen peroxide detector 6 and the condensate purification system 4.
This bypass line 26 is led to a waste treatment system (not shown). The condensate purification system 4 is provided with a condensate purification device filled with an ion exchange resin.
【００２１】過酸化水素検出器６で過酸化水素が検出さ
れた場合にはこのバイパスバルブ７が開となって廃棄物
処理系へ流れ、過酸化水素を含む溶液が復水浄化系４に
流れ込まないため、復水浄化系４への溶液の流入を制限
できる。When hydrogen peroxide is detected by the hydrogen peroxide detector 6, the bypass valve 7 is opened and flows into the waste treatment system, and the solution containing hydrogen peroxide flows into the condensate purification system 4. Therefore, the flow of the solution into the condensate purification system 4 can be restricted.
【００２２】この実施例ではバイパスバルブ７を開とし
て溶液の復水浄化系４への流入を防止する手段を示して
いるが原子炉１の停止時等には復水器３へ流入する元バ
ルブを閉として復水器３への流入水の源を絶つというシ
ーケンスを組んでもよい。In this embodiment, means for preventing the solution from flowing into the condensate purification system 4 by opening the bypass valve 7 is shown, but the main valve that flows into the condenser 3 when the reactor 1 is stopped, etc. It is also possible to form a sequence in which is closed and the source of the water flowing into the condenser 3 is cut off.
【００２３】つぎに図２を参照しながら本発明の第２の
実施例を説明する。図２は図１と同様にＢＷＲ型プラン
トの主設備の概略を示したもので、図１と同一部分には
同一符号を付して重複する部分の説明は省略する。復水
浄化系４の上流側復水ライン25に過酸化水素分解装置８
と過酸化水素検出器６をそれぞれバイパスして設置して
いる。Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 2 shows an outline of main equipment of the BWR type plant as in FIG. 1, and the same parts as those in FIG. In the condensate line 25 upstream of the condensate purification system 4, a hydrogen peroxide decomposition device 8
And the hydrogen peroxide detector 6 are installed bypassing each.
【００２４】過酸化水素検出器６で過酸化水素が検出さ
れた場合には復水器３から過酸化水素分解装置８に溶液
が送られ、過酸化水素が処理される。過酸化水素分解装
置８により過酸化水素が分解して除去された溶液は復水
浄化系４へ導かれ浄化処理される。When hydrogen peroxide is detected by the hydrogen peroxide detector 6, the solution is sent from the condenser 3 to the hydrogen peroxide decomposing device 8 to treat the hydrogen peroxide. The solution in which the hydrogen peroxide is decomposed and removed by the hydrogen peroxide decomposer 8 is guided to the condensate purification system 4 and purified.
【００２５】図２では過酸化水素除去装置８を過酸化水
素検出器６の上流に設けたが、過酸化水素検出器６の下
流に設け過酸化水素分解装置８の出口に確認用の過酸化
水素検出器をさらに設置してもよい。Although the hydrogen peroxide removing device 8 is provided upstream of the hydrogen peroxide detector 6 in FIG. 2, it is provided downstream of the hydrogen peroxide detector 6 and is provided at the outlet of the hydrogen peroxide decomposing device 8 for confirmation. A hydrogen detector may be further installed.
【００２６】つぎに本発明の第３の実施例を説明する。
過酸化水素は熱分解するのでヒーターを組み込んで高温
に保持する過酸化水素分解除去装置も適用できるが、過
酸化水素の分解効率の上昇および加熱装置の不要を考慮
すると、二酸化マンガン（Ｍn Ｏ2 ）に代表される過酸
化水素分解触媒を用いることもできる。過酸化水素はＭ
n Ｏ2 との接触により下式のように酸素と水分子に分解
する。 ２Ｈ2 Ｏ2 −−−−−→２Ｈ2 Ｏ＋Ｏ2 Next, a third embodiment of the present invention will be described.
Since hydrogen peroxide decomposes thermally, a hydrogen peroxide decomposition removal device that incorporates a heater and holds it at a high temperature can also be applied, but considering the increase in hydrogen peroxide decomposition efficiency and the need for a heating device, manganese dioxide (MnO 2 It is also possible to use a hydrogen peroxide decomposition catalyst represented by (1). Hydrogen peroxide is M
Upon contact with n O 2 , it decomposes into oxygen and water molecules as shown in the formula below. 2H 2 O 2 −−−−− → 2H 2 O + O 2
【００２７】過酸化水素除去装置８にＭn Ｏ2 などの金
属酸化物を充填したカラムを用いる。このカラムに溶液
を通過させることにより過酸化水素を分解し、過酸化水
素を含まない溶液を復水浄化系へ移送することができ
る。また、金属酸化物の代りに白金，パラジウム，金，
銀などの貴金属のコロイドを触媒として使用することが
できる。A column filled with a metal oxide such as M n O 2 is used as the hydrogen peroxide removing device 8. By passing the solution through this column, the hydrogen peroxide can be decomposed and the solution containing no hydrogen peroxide can be transferred to the condensate purification system. Instead of metal oxide, platinum, palladium, gold,
Colloids of noble metals such as silver can be used as catalysts.
【００２８】つぎに図３により本発明の第４の実施例を
説明する。第４の実施例では過酸化水素分解装置８で過
酸化水素を分解した時に生成する酸素を除去する酸素除
去装置９を過酸化水素分解装置８の下流側に接続し、前
記酸素除去装置９の下流側を復水ライン25に設置したこ
とにある。Next, a fourth embodiment of the present invention will be described with reference to FIG. In the fourth embodiment, an oxygen removing device 9 for removing oxygen generated when hydrogen peroxide is decomposed by the hydrogen peroxide decomposing device 8 is connected to the downstream side of the hydrogen peroxide decomposing device 8 and the oxygen removing device 9 The downstream side is installed in the condensate line 25.
【００２９】また、酸素除去装置９の下流側の復水ライ
ン25には過酸化水素検出器６がバイパス接続されてい
る。過酸化水素分解装置８で分解して生成した酸素は過
酸化水素ほどでないにせよイオン交換樹脂の劣化を促進
する作用がある。そこで、過酸化水素除去装置８と復水
浄化系４の間に溶液中の酸素を除去する酸素除去装置９
を設置したことにより復水浄化系４内のイオン交換樹脂
に悪影響を及ぼす因子を極力除去することができる。Further, the hydrogen peroxide detector 6 is bypass-connected to the condensate line 25 on the downstream side of the oxygen removing device 9. The oxygen generated by decomposing in the hydrogen peroxide decomposing device 8 has the function of promoting the deterioration of the ion exchange resin, though not so much as hydrogen peroxide. Therefore, an oxygen removing device 9 for removing oxygen in the solution is provided between the hydrogen peroxide removing device 8 and the condensate purification system 4.
By installing, it is possible to remove as much as possible the factors that adversely affect the ion exchange resin in the condensate purification system 4.
【００３０】つぎに図４により本発明の第５の実施例を
説明する。この第５の実施例は第４の実施例の酸素除去
手段に酸素を含まない脱気ガス，例えば窒素ガス等によ
り過酸化水素を分解した溶液をパージし、溶存酸素濃度
を低減させるものである。Next, a fifth embodiment of the present invention will be described with reference to FIG. In the fifth embodiment, the oxygen removing means of the fourth embodiment is purged with a solution obtained by decomposing hydrogen peroxide with a degassing gas containing no oxygen, such as nitrogen gas, to reduce the dissolved oxygen concentration. .
【００３１】すなわち、過酸化水素分解装置からのライ
ン12を通して過酸化水素を分解した溶液をスパイラル状
配管24に導き、このスパイラル状配管24内で脱酸素ガス
注入ライン10から注入した窒素ガスと充分に混合させて
溶存酸素を追い出す。That is, the solution obtained by decomposing hydrogen peroxide is introduced into the spiral pipe 24 through the line 12 from the hydrogen peroxide decomposer, and the nitrogen gas injected from the deoxygenation gas injection line 10 is sufficiently supplied in the spiral pipe 24. Dissolve oxygen by mixing with.
【００３２】そして、スパイラル状配管24の上部に接続
した気液分離槽11で脱酸素した溶液と酸素を含むガスを
分離し、復水浄化系へのライン13を通して溶液を復水浄
化系４へ導くものである。この実施例では溶存酸素の除
去方法にガスのパージ法を用いたが、真空脱気法等を用
いてもよい。なお、図４中符号14は気水分離槽11の上部
に接続したベントである。Then, the deoxygenated solution and the gas containing oxygen are separated in the gas-liquid separation tank 11 connected to the upper part of the spiral pipe 24, and the solution is passed through the line 13 to the condensate purification system to the condensate purification system 4. It is a guide. In this embodiment, the gas purging method was used as the method for removing dissolved oxygen, but a vacuum degassing method or the like may be used. Reference numeral 14 in FIG. 4 is a vent connected to the upper part of the steam separation tank 11.
【００３３】つぎに図５により本発明の第６の実施例を
説明する。この第６の実施例は第２の実施例で示した過
酸化水素分解装置８の出口側に過酸化水素濃度測定器15
を設置し、過酸化水素分解装置８の過酸化水素の分解効
率を監視しながら運転する例である。Next, a sixth embodiment of the present invention will be described with reference to FIG. In the sixth embodiment, a hydrogen peroxide concentration measuring device 15 is provided on the outlet side of the hydrogen peroxide decomposing device 8 shown in the second embodiment.
Is installed and the hydrogen peroxide decomposition apparatus 8 is operated while monitoring the decomposition efficiency of hydrogen peroxide.
【００３４】過酸化水素の分解反応は過酸化水素を含む
溶液の触媒に接している時間、すなわち流量に逆比例す
る。過酸化水素の分解効率が低い場合には分解装置の入
口の流量バルブ16の開度を調節することにより流量を変
化させ、高分解効率を維持するものである。なお、図５
中、符号17は過酸化水素濃度信号ライン、18はバルブ開
度調整器である。The decomposition reaction of hydrogen peroxide is inversely proportional to the time during which the solution containing hydrogen peroxide is in contact with the catalyst, that is, the flow rate. When the decomposition efficiency of hydrogen peroxide is low, the flow rate is changed by adjusting the opening degree of the flow valve 16 at the entrance of the decomposition apparatus to maintain high decomposition efficiency. Note that FIG.
Reference numeral 17 is a hydrogen peroxide concentration signal line, and 18 is a valve opening adjuster.
【００３５】つぎに図６により本発明の第７の実施例を
説明する。この第７の実施例は第４および第５の実施例
の酸素除去装置８の出口側に溶存酸素計19を設置し、酸
素の除去効率を監視しながら運転するものである。Next, a seventh embodiment of the present invention will be described with reference to FIG. In the seventh embodiment, a dissolved oxygen meter 19 is installed on the outlet side of the oxygen removing devices 8 of the fourth and fifth embodiments and is operated while monitoring the oxygen removal efficiency.
【００３６】すなわち、図６において、脱酸素ガス注入
ライン11に脱酸素ガス流量調整バルブ20を接続するとと
もに過酸化水素分解装置からのライン12に脱酸素する溶
液の流量調整バルブ21を接続する。また、復水浄化系へ
のライン13に溶存酸素計19が接続し、この溶存酸素計19
と前記各バルブ20，21との間に流量調整バルブ開度調整
器23を有する酸素濃度信号ライン22が接続している。That is, in FIG. 6, a deoxygenating gas flow rate adjusting valve 20 is connected to the deoxygenating gas injection line 11, and a deoxygenating solution flow rate adjusting valve 21 is connected to the line 12 from the hydrogen peroxide decomposition apparatus. Also, a dissolved oxygen meter 19 is connected to the line 13 to the condensate purification system, and the dissolved oxygen meter 19 is connected.
An oxygen concentration signal line 22 having a flow rate adjusting valve opening degree adjuster 23 is connected between the valve and each of the valves 20 and 21.
【００３７】しかして、上記溶存酸素計19の出力信号に
より、酸素除去装置に流入する過酸化水素を処理した溶
液の流量を調整したり、脱気効率に影響するバージガス
の流量を調整し、溶存酸素の除去を行うことができる。Therefore, the output signal of the dissolved oxygen meter 19 is used to adjust the flow rate of the hydrogen peroxide-treated solution flowing into the oxygen removing device or the flow rate of the barge gas which affects the degassing efficiency. Oxygen can be removed.
【００３８】[0038]
【発明の効果】本発明によれば復水浄化系のイオン交換
樹脂を充填した復水脱塩装置内への流入水（溶液）中に
過酸化水素が含まれることがなく、よって、イオン交換
樹脂の劣化を防止することができ、長寿命化を図ること
ができる。EFFECTS OF THE INVENTION According to the present invention, hydrogen peroxide is not contained in the inflow water (solution) into the condensate desalination apparatus filled with the ion exchange resin of the condensate purification system, and therefore the ion exchange is performed. The deterioration of the resin can be prevented, and the life can be extended.
【図１】本発明に係る復水浄化系のイオン交換樹脂劣化
防止装置の第１の実施例を示す系統図。FIG. 1 is a system diagram showing a first embodiment of an ion exchange resin deterioration prevention device for a condensate purification system according to the present invention.
【図２】本発明に係る復水浄化系のイオン交換樹脂劣化
防止装置の第２の実施例を示す系統図。FIG. 2 is a system diagram showing a second embodiment of the ion exchange resin deterioration prevention device of the condensate purification system according to the present invention.
【図３】本発明に係る復水浄化系のイオン交換樹脂劣化
防止装置の第４の実施例の要部を示す系統図。FIG. 3 is a system diagram showing a main part of a fourth embodiment of an ion exchange resin deterioration prevention device for a condensate purification system according to the present invention.
【図４】本発明に係る復水浄化系のイオン交換樹脂劣化
防止装置の第５の実施例の要部を示す系統図。FIG. 4 is a system diagram showing essential parts of a fifth embodiment of an ion exchange resin deterioration preventing device for a condensate purification system according to the present invention.
【図５】本発明に係る復水浄化系のイオン交換樹脂劣化
防止装置の第６の実施例の要部を示す系統図。FIG. 5 is a system diagram showing a main part of a sixth embodiment of an ion exchange resin deterioration prevention device for a condensate purification system according to the present invention.
【図６】本発明に係る復水浄化系のイオン交換樹脂劣化
防止装置の第７の実施例の要部を示す系統図。FIG. 6 is a system diagram showing a main part of a seventh embodiment of an ion exchange resin deterioration prevention device for a condensate purification system according to the present invention.
【図７】従来例を説明するための過酸化水素含有水によ
るイオン交換樹脂の押しつぶし強度の低下挙動を示す特
性図。FIG. 7 is a characteristic diagram showing a reduction behavior of crush strength of an ion exchange resin by hydrogen peroxide-containing water for explaining a conventional example.
１…ＢＷＲ型プラントの原子炉、２…主蒸気ライン、３
…復水器、４…復水浄化系、５…給水ライン、６…過酸
化水素検出器、７…復水浄化系バイパスバルブ、８…過
酸化水素分解装置、９…酸素除去装置、10…脱酸素ガス
注入ライン、11…気液分離槽、12…過酸化水素分解装置
からのライン、13…復水浄化系へのライン、14…ベン
ト、15…過酸化水素濃度測定器、16…流量調整バルブ、
17…過酸化水素濃度信号ライン、18…バルブ開度調整
器、19…溶存酸素計、20…脱酸素ガス流量調整バルブ、
21…脱酸素する溶液の流量調整バルブ、22…酸素濃度信
号ライン、23…流量調整バルブ開度調整器、24…スパイ
ラル状配管、25…復水ライン、26…バイパスライン。1 ... BWR type plant reactor, 2 ... main steam line, 3
... condenser, 4 ... condensate purification system, 5 ... water supply line, 6 ... hydrogen peroxide detector, 7 ... condensate purification system bypass valve, 8 ... hydrogen peroxide decomposition device, 9 ... oxygen removal device, 10 ... Deoxygenation gas injection line, 11 ... Gas-liquid separation tank, 12 ... Line from hydrogen peroxide decomposition device, 13 ... Line to condensate purification system, 14 ... Vent, 15 ... Hydrogen peroxide concentration measuring device, 16 ... Flow rate Regulating valve,
17 ... Hydrogen peroxide concentration signal line, 18 ... Valve opening regulator, 19 ... Dissolved oxygen meter, 20 ... Deoxygenated gas flow rate control valve,
21 ... a flow rate adjusting valve for a solution to be deoxidized, 22 ... an oxygen concentration signal line, 23 ... a flow rate adjusting valve opening degree adjuster, 24 ... a spiral pipe, 25 ... a condensate line, 26 ... a bypass line.
Claims (8)
蒸気を復水する復水器と、この復水器から流出する復水
をイオン交換樹脂で浄化する復水浄化系とを接続する復
水ラインに過酸化水素検出器をバイパスして設けてなる
ことを特徴とする復水浄化系のイオン交換樹脂劣化防止
装置。1. A condenser for condensing steam sent from a boiling water reactor to a turbine and a condensate purification system for purifying condensate flowing out of this condenser with an ion exchange resin. An apparatus for preventing deterioration of ion exchange resin in a condensate purification system, characterized in that a hydrogen peroxide detector is bypassed in the condensate line.
との間の復水ラインから分岐してバイパスバルブを有す
るバイパス系を設けたことを特徴とする請求項１記載の
復水浄化系のイオン交換樹脂劣化防止装置。2. The condensate purification system according to claim 1, further comprising a bypass system having a bypass valve branched from a condensate line between the hydrogen peroxide detector and the condensate purification system. System ion exchange resin deterioration prevention device.
過酸化水素検出器とをそれぞれバイパスして設けてなる
ことを特徴とする請求項１記載の復水浄化系のイオン交
換樹脂劣化防止装置。3. The prevention of deterioration of the ion-exchange resin of the condensate purification system according to claim 1, wherein the condensate line is provided with a hydrogen peroxide decomposing device and a hydrogen peroxide detector by-passing each. apparatus.
ド，金属酸化物から選ばれた過酸化水素分解触媒が充填
されてなることを特徴とする請求項１記載の復水浄化系
のイオン交換樹脂劣化防止装置。4. The ion exchange of the condensate purification system according to claim 1, wherein the hydrogen peroxide decomposition apparatus is filled with a hydrogen peroxide decomposition catalyst selected from metal colloids and metal oxides. Resin deterioration prevention device.
素を分解した際に生成する酸素を除去する酸素除去装置
を前記過酸化水素分解装置の下流側に設け、前記酸素除
去装置の下流側を前記復水ラインに接続してなることを
特徴とする請求項４記載の復水浄化系のイオン交換樹脂
劣化防止装置。5. An oxygen removing device that removes oxygen generated when hydrogen peroxide is decomposed by the hydrogen peroxide decomposing device is provided on the downstream side of the hydrogen peroxide decomposing device, and the downstream side of the oxygen removing device is provided on the downstream side. The ion exchange resin deterioration preventing device for a condensate purification system according to claim 4, wherein the device is connected to the condensate line.
窒素ガス等の酸素を含まないガスによる暴気法により酸
素を除去する装置からなることを特徴とする請求項５記
載の復水浄化系のイオン交換樹脂劣化防止装置。6. The condensate purification system according to claim 5, wherein the oxygen removing device comprises a device that removes oxygen by a vacuum deaeration method or an aeration method using a gas containing no oxygen such as nitrogen gas. System ion exchange resin deterioration prevention device.
調整バルブを設け、出口側に過酸化水素濃度測定器を設
け、この過酸化水素濃度測定器と前記流量調整バルブと
の間にバルブ開度調整器を有する過酸化水素信号ライン
を設けてなることを特徴とする請求項３および４記載の
復水浄化系のイオン交換樹脂劣化防止装置。7. A flow rate adjusting valve is provided on the inlet side of the hydrogen peroxide decomposing device, and a hydrogen peroxide concentration measuring instrument is provided on the outlet side, and a valve is provided between the hydrogen peroxide concentration measuring instrument and the flow rate regulating valve. 5. The ion exchange resin deterioration prevention device for a condensate purification system according to claim 3, wherein a hydrogen peroxide signal line having an opening degree adjuster is provided.
を設置し、前記過酸化水素分解装置からの出口配管に脱
酸素する溶液の流量調整バルブを設け、この流量調整バ
ルブと前記溶存酸素計との間に流量調整バルブ開度調整
器を有する酸素濃度信号ラインを設けたことを特徴とす
る請求項５記載の復水浄化系のイオン交換樹脂劣化防止
装置。8. A dissolved oxygen system is installed on the outlet side of the oxygen removing device, and a flow rate adjusting valve for deoxidizing a solution is provided in an outlet pipe from the hydrogen peroxide decomposing device. The flow rate adjusting valve and the dissolved oxygen are provided. 6. An ion exchange resin deterioration prevention device for a condensate purification system according to claim 5, wherein an oxygen concentration signal line having a flow rate adjusting valve opening adjuster is provided between the device and the meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14183094A JP3302832B2 (en) | 1994-06-23 | 1994-06-23 | Condensate purification system ion exchange resin deterioration prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14183094A JP3302832B2 (en) | 1994-06-23 | 1994-06-23 | Condensate purification system ion exchange resin deterioration prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH085779A true JPH085779A (en) | 1996-01-12 |
| JP3302832B2 JP3302832B2 (en) | 2002-07-15 |
Family
ID=15301128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14183094A Expired - Fee Related JP3302832B2 (en) | 1994-06-23 | 1994-06-23 | Condensate purification system ion exchange resin deterioration prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3302832B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010517745A (en) * | 2007-02-05 | 2010-05-27 | エドワーズ リミテッド | Method for treating liquid waste |
-
1994
- 1994-06-23 JP JP14183094A patent/JP3302832B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010517745A (en) * | 2007-02-05 | 2010-05-27 | エドワーズ リミテッド | Method for treating liquid waste |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3302832B2 (en) | 2002-07-15 |
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