JPH04315094A - Condensate purification system for nuclear power plant - Google Patents
Condensate purification system for nuclear power plantInfo
- Publication number
- JPH04315094A JPH04315094A JP3080352A JP8035291A JPH04315094A JP H04315094 A JPH04315094 A JP H04315094A JP 3080352 A JP3080352 A JP 3080352A JP 8035291 A JP8035291 A JP 8035291A JP H04315094 A JPH04315094 A JP H04315094A
- Authority
- JP
- Japan
- Prior art keywords
- condensate
- regeneration
- water
- exchange resin
- ion exchanger
- 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
Links
- 238000000746 purification Methods 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 230000008929 regeneration Effects 0.000 claims abstract description 24
- 238000011069 regeneration method Methods 0.000 claims abstract description 24
- 238000005115 demineralization Methods 0.000 claims abstract description 12
- 230000002328 demineralizing effect Effects 0.000 claims abstract description 12
- 230000001172 regenerating effect Effects 0.000 claims abstract description 6
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 22
- 238000010612 desalination reaction Methods 0.000 claims description 22
- 239000012535 impurity Substances 0.000 claims description 5
- 239000003957 anion exchange resin Substances 0.000 claims description 4
- 239000003729 cation exchange resin Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 abstract description 11
- 239000001301 oxygen Substances 0.000 abstract description 11
- 238000001914 filtration Methods 0.000 abstract description 7
- 239000011347 resin Substances 0.000 abstract description 7
- 229920005989 resin Polymers 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract 2
- 238000006731 degradation reaction Methods 0.000 abstract 2
- 239000003456 ion exchange resin Substances 0.000 description 19
- 229920003303 ion-exchange polymer Polymers 0.000 description 19
- 230000006866 deterioration Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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
- Y02E30/30—Nuclear fission reactors
Landscapes
- Treatment Of Water By Ion Exchange (AREA)
Abstract
Description
【０００１】［発明の目的］[Object of the invention]
【０００２】0002
【産業上の利用分野】本発明は復水脱塩装置の復水脱塩
塔内の粒状イオン交換樹脂を再生できるように構成した
原子力発電プラントの復水浄化系統に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condensate purification system for a nuclear power plant configured to regenerate granular ion exchange resin in a condensate demineralization tower of a condensate demineralizer.
【０００３】0003
【従来の技術】沸騰水型原子力発電プラントでは原子炉
内を常に、清浄な状態にしなければならないので、復水
器から原子炉内に流入する復水を復水脱塩塔によって浄
化処理して高度に浄化した後、原子炉への冷却水として
利用している。[Prior Art] In a boiling water nuclear power plant, the inside of the reactor must always be kept clean, so condensate flowing into the reactor from the condenser is purified by a condensate desalination tower. After being highly purified, it is used as cooling water for nuclear reactors.
【０００４】従来例を図３により説明する。原子炉圧力
容器１内で発生した蒸気は主蒸気管２を流れてタービン
３に送られ、このタービン３によって発電機４を駆動し
発電をなすように構成されている。このタービン３を駆
動した蒸気は復水器５で凝縮され復水となり、低圧復水
ポンプ６によって昇圧され、空気抽出器７、グランド蒸
気復水器８を流れて復水浄化系統に設けられている復水
ろ過装置９および復水脱塩装置１０により不純物を除去
する。上記復水ろ過装置９および復水脱塩装置１０で浄
化された復水は高圧復水ポンプ１１でさらに昇圧され、
低圧給水加熱器１２に送られて加熱される。そして、給
水ポンプ１３でさらに昇圧され、高圧給水加熱器１４を
流れて原子炉圧力容器１内に給水される。A conventional example will be explained with reference to FIG. Steam generated within the reactor pressure vessel 1 flows through a main steam pipe 2 and is sent to a turbine 3, which drives a generator 4 to generate electricity. The steam that drove the turbine 3 is condensed into condensate in a condenser 5, and the pressure is increased by a low-pressure condensate pump 6. The steam flows through an air extractor 7 and a grand steam condenser 8, and is then installed in a condensate purification system. Impurities are removed by a condensate filtration device 9 and a condensate desalination device 10. The condensate purified by the condensate filtration device 9 and the condensate desalination device 10 is further pressurized by the high-pressure condensate pump 11,
The water is sent to the low pressure feed water heater 12 and heated. The water is then further pressurized by the feedwater pump 13, flows through the high-pressure feedwater heater 14, and is supplied into the reactor pressure vessel 1.
【０００５】上記復水脱塩装置１０の復水脱塩塔は、粒
状のイオン交換樹脂を有し、主として復水中の溶解性不
純物を除去するように構成されている。復水脱塩塔の能
力が低下した場合には系統から切り離し、待機状態にあ
るものを系統に併入して連続的に復水の浄化を行う。そ
の切り離された復水脱塩塔内に充填されたイオン交換樹
脂は再生装置１５によって再生される。従来、再生装置
１５でイオン交換樹脂を再生またはプラント立ち上げま
では復水脱塩装置１０でイオン交換樹脂を保管する用水
を復水貯蔵タンク１６から復水補給水ポンプ１７を通し
て供給される構成になっている。The condensate demineralization tower of the condensate demineralization apparatus 10 has a granular ion exchange resin and is configured to mainly remove soluble impurities from condensate. When the capacity of a condensate desalination tower decreases, it is disconnected from the system, and a standby tower is added to the system to continuously purify condensate. The ion exchange resin filled in the separated condensate demineralization tower is regenerated by the regenerator 15. Conventionally, water for storing the ion exchange resin in the condensate desalination device 10 is supplied from the condensate storage tank 16 through the condensate makeup water pump 17 until the ion exchange resin is regenerated by the regenerator 15 or the plant is started up. It has become.
【０００６】[0006]
【発明が解決しようとする課題】従来の系統ではイオン
交換樹脂の再生や、保管を行う用水は復水貯蔵タンク１
６から復水補給水ポンプ１７を通して供給されている。
しかしながら、この復水貯蔵タンク１６は大気と連通し
ているため、用水の溶存酸素濃度が高く、この用水によ
り再生、保管されることがイオン交換樹脂の酸化劣化の
主要な原因となっている。また、イオン交換樹脂が酸化
劣化すると、樹脂母体から全有機炭素（ＴＯＣ）が発生
する。このＴＯＣは復水脱塩装置１０の出口の水質を悪
化させる原因となるなどの課題がある。[Problem to be solved by the invention] In the conventional system, water for regenerating and storing ion exchange resin is stored in the condensate storage tank 1.
6 through a make-up condensate water pump 17. However, since the condensate storage tank 16 communicates with the atmosphere, the dissolved oxygen concentration of the service water is high, and the regeneration and storage of the service water is a major cause of oxidative deterioration of the ion exchange resin. Further, when the ion exchange resin deteriorates by oxidation, total organic carbon (TOC) is generated from the resin matrix. This TOC poses problems such as causing deterioration of the water quality at the outlet of the condensate desalination device 10.
【０００７】本発明は上記課題を解決するためになされ
たもので、イオン交換樹脂の酸化劣化を防ぐために酸素
濃度の低い用水を、復水脱塩装置および再生装置に供給
することができる原子力発電プラントの復水浄化系統を
提供することにある。
［発明の構成］The present invention has been made to solve the above problems, and is a nuclear power generation system that can supply water with a low oxygen concentration to a condensate desalination device and a regeneration device in order to prevent oxidative deterioration of ion exchange resin. The purpose is to provide a condensate purification system for the plant. [Structure of the invention]
【０００８】[0008]
【課題を解決するための手段】本発明は復水中に含まれ
る溶解性不純物を除去する復水脱塩装置の復水脱塩塔と
、この復水脱塩塔内に充填された陽イオン交換樹脂と陰
イオン交換樹脂を再生する再生装置とを備えた原子力発
電プラントの復水浄化系統において、前記復水脱塩装置
に前記復水脱塩塔内の陽イオン交換樹脂と陰イオン交換
樹脂を再生、保管するための水を供給する再生用水タン
クを設けてなることを特徴とする。[Means for Solving the Problems] The present invention provides a condensate demineralizer for a condensate demineralizer that removes soluble impurities contained in condensate, and a cation exchanger filled in the condensate demineralizer. In a condensate purification system of a nuclear power plant equipped with a regenerator for regenerating resin and anion exchange resin, the cation exchange resin and anion exchange resin in the condensate desalination tower are used in the condensate desalination device. It is characterized by being equipped with a regeneration water tank that supplies water for regeneration and storage.
【０００９】[0009]
【作用】復水脱塩装置の下流から復水を復水脱塩装置再
生用タンクに溜めておく。復水脱塩装置は原子力圧力容
器１で発生した蒸気を復水器で凝縮した復水を浄化する
。この復水は復水器で脱気されているため、酸素濃度が
低い。イオン交換樹脂を再生、保管をするための用水と
してこの復水器で脱気された復水を使用することにより
、イオン交換樹脂の酸化劣化を防ぐことができる。[Operation] Condensate from downstream of the condensate desalination device is stored in the condensate desalination device regeneration tank. The condensate desalination device purifies condensate obtained by condensing steam generated in the nuclear pressure vessel 1 in a condenser. This condensate is degassed in the condenser, so its oxygen concentration is low. By using the condensate degassed in this condenser as water for regenerating and storing the ion exchange resin, oxidative deterioration of the ion exchange resin can be prevented.
【００１０】0010
【実施例】本発明に係る原子力発電プラントの復水浄化
系統の一実施例を図１を参照して説明する。図１におい
て、原子炉圧力容器１０１ 内で発生した蒸気は主蒸気
管１０２を流れてタービン１０３ に送られ、このター
ビン１０３ によって発電機１０４ を駆動し発電をな
すように構成されている。このタービン１０３ を駆動
した蒸気は復水器１０５ で凝縮されて復水となり、低
圧復水ポンプ１０６ によって昇圧され、空気抽出器１
０７ 、グランド蒸気凝縮器１０８ を流れて復水浄化
系統に設けられている復水ろ過装置１０９ および復水
脱塩装置１１０ により不純物を除去する。上記復水ろ
過装置１０９ および復水脱塩装置１１０ で浄化され
た復水は、高圧復水ポンプ１１１ でさらに昇圧され、
低圧給水加熱器１１２ に送られて加熱される。そして
、給水ポンプ１１３でさらに昇圧され、高圧給水加熱器
１１４ を介して原子炉圧力容器１０１ 内に給水され
る。[Embodiment] An embodiment of a condensate purification system for a nuclear power plant according to the present invention will be described with reference to FIG. In FIG. 1, steam generated in a reactor pressure vessel 101 flows through a main steam pipe 102 and is sent to a turbine 103, which drives a generator 104 to generate electricity. The steam that drove the turbine 103 is condensed into condensate in the condenser 105, and the pressure is increased by the low pressure condensate pump 106, and the air extractor 1
07, the water flows through the grand steam condenser 108, and impurities are removed by the condensate filtration device 109 and condensate desalination device 110 provided in the condensate purification system. The condensate purified by the condensate filtration device 109 and the condensate desalination device 110 is further pressurized by the high pressure condensate pump 111.
The water is sent to the low pressure feed water heater 112 and heated. Then, the pressure of the water is further increased by the feedwater pump 113, and the water is fed into the reactor pressure vessel 101 via the high-pressure feedwater heater 114.
【００１１】復水ろ過装置１０９ 、復水脱塩装置１１
０ により浄化された復水を復水脱塩装置１１０ に再
生用水移送ポンプ１１９ を介して設けた再生用水タン
ク１１８ に溜める。
この再生用水タンク１１８ 内の復水は用水として再生
装置１１５ でイオン交換樹脂を再生または、プラント
立ち上げまで復水脱塩装置１１０ でイオン交換樹脂を
保管する際、再生用水移送ポンプ１１９ を通して、復
水脱塩装置１１０ 、再生装置１１５ へ供給される。[0011] Condensate filtration device 109, condensate desalination device 11
The condensate purified by 0 is stored in a regeneration water tank 118 provided in a condensate desalination device 110 via a regeneration water transfer pump 119 . The condensate in the regeneration water tank 118 is used as service water to regenerate the ion exchange resin in the regenerator 115 or to store the ion exchange resin in the condensate desalination device 110 until the plant is started up. The water is supplied to a water desalination device 110 and a regeneration device 115.
【００１２】しかして、上記実施例では再生用水タンク
１１８ を設けたことによって脱気した酸素濃度の低い
用水を復水脱塩装置１１０ および再生装置１１５ へ
供給でき、イオン交換樹脂の酸化劣化を防ぐことができ
る。[0012] In the embodiment described above, by providing the regeneration water tank 118, deaerated water with a low oxygen concentration can be supplied to the condensate desalination device 110 and the regeneration device 115, thereby preventing oxidative deterioration of the ion exchange resin. be able to.
【００１３】用水中の溶存酸素の濃度差によるイオン交
換樹脂からの全有機炭素（ＴＯＣ）溶出挙動（溶存酸素
による影響）を図２に示す。なお、図２中、たて軸は全
有機炭素を、よこ軸は通水時間をとっている。図２に示
したように●印で付した脱気水（低溶存酸素）を使用す
ることによりイオン交換樹脂からのＴＯＣ溶出量を○印
で付した高溶存酸素水の１／２程度に抑制することが可
能となる。FIG. 2 shows the elution behavior of total organic carbon (TOC) from the ion exchange resin due to the difference in the concentration of dissolved oxygen in the water (influence of dissolved oxygen). In FIG. 2, the vertical axis represents total organic carbon, and the horizontal axis represents water flow time. As shown in Figure 2, by using degassed water (low dissolved oxygen) marked with ●, the amount of TOC eluted from the ion exchange resin is suppressed to about half of the high dissolved oxygen water marked with ○. It becomes possible to do so.
【００１４】[0014]
【発明の効果】本発明によれば、脱気した酸素濃度の低
い用水を使いイオン交換樹脂の再生、保管をすることに
より、イオン交換樹脂の劣化を抑制し寿命を長くでき、
原子炉圧力容器へＴＯＣ（全有機炭素）が流入するのを
抑制でき、原子炉圧力容器内の機器健全性を向上させる
事ができる。[Effects of the Invention] According to the present invention, by regenerating and storing ion exchange resin using degassed water with a low oxygen concentration, deterioration of ion exchange resin can be suppressed and its life can be extended.
It is possible to suppress the inflow of TOC (total organic carbon) into the reactor pressure vessel, and it is possible to improve the integrity of equipment in the reactor pressure vessel.
【図１】本発明の一実施例を含む原子力発電プラントを
示す系統図。FIG. 1 is a system diagram showing a nuclear power plant including an embodiment of the present invention.
【図２】図１の系統における溶存酸素濃度によるイオン
交換樹脂からの全有機炭素（ＴＯＣ）溶出挙動を示す特
性図。FIG. 2 is a characteristic diagram showing the elution behavior of total organic carbon (TOC) from an ion exchange resin depending on the dissolved oxygen concentration in the system of FIG.
【図３】従来の復水脱塩装置を含む原子力発電プラント
を示す系統図。FIG. 3 is a system diagram showing a nuclear power plant including a conventional condensate desalination device.
１０１ …原子炉圧力容器、１０２ …主蒸気管、１０
３ …タービン、１０４ …発電機、１０５ …復水器
、１０６ …低圧復水ポンプ、１０７ …空気抽出器、
１０８ …グランド蒸気凝縮器、１０９ …復水ろ過装
置、１１０ …復水脱塩装置、１１１ …高圧復水ポン
プ、１１２…低圧給水加熱器、１１３ …給水ポンプ、
１１４ …高圧給水加熱器、１１５ …再生装置、１１
６ …復水貯蔵タンク、１１７ …復水補給水ポンプ、
１１８ …再生用水タンク、１１９ …再生用移送ポン
プ。101...Reactor pressure vessel, 102...Main steam pipe, 10
3...turbine, 104...generator, 105...condenser, 106...low pressure condensate pump, 107...air extractor,
108... Gland steam condenser, 109... Condensate filtration device, 110... Condensate desalination device, 111... High pressure condensate pump, 112... Low pressure feed water heater, 113... Feed water pump,
114... High pressure feed water heater, 115... Regeneration device, 11
6...Condensate storage tank, 117...Condensate make-up water pump,
118...Regeneration water tank, 119...Regeneration transfer pump.
Claims (1)
する復水脱塩装置の復水脱塩塔と、この復水塩塔内の陽
イオン交換樹脂と陰イオン交換樹脂を再生する再生装置
とを備えた原子力発電プラントの復水浄化系統において
、前記復水脱塩装置に前記復水脱塩塔内に充填された陽
イオン交換樹脂と陰イオン交換樹脂を再生、保管するた
めの水を供給する再生用水タンクを設けてなることを特
徴とする原子力発電プラントの復水浄化系統。Claim 1: A condensate demineralization tower of a condensate desalination apparatus that removes soluble impurities contained in condensate water, and a regeneration device that regenerates the cation exchange resin and anion exchange resin in the condensate salt tower. In the condensate purification system of a nuclear power plant, the condensate demineralizer is supplied with water for regenerating and storing the cation exchange resin and anion exchange resin filled in the condensate demineralizer. A condensate purification system for a nuclear power plant, characterized by being equipped with a tank for supplying recycled water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3080352A JPH04315094A (en) | 1991-04-15 | 1991-04-15 | Condensate purification system for nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3080352A JPH04315094A (en) | 1991-04-15 | 1991-04-15 | Condensate purification system for nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04315094A true JPH04315094A (en) | 1992-11-06 |
Family
ID=13715862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3080352A Pending JPH04315094A (en) | 1991-04-15 | 1991-04-15 | Condensate purification system for nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04315094A (en) |
-
1991
- 1991-04-15 JP JP3080352A patent/JPH04315094A/en active Pending
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