JPS6230397B2 - - Google Patents
Info
- Publication number
- JPS6230397B2 JPS6230397B2 JP54093270A JP9327079A JPS6230397B2 JP S6230397 B2 JPS6230397 B2 JP S6230397B2 JP 54093270 A JP54093270 A JP 54093270A JP 9327079 A JP9327079 A JP 9327079A JP S6230397 B2 JPS6230397 B2 JP S6230397B2
- Authority
- JP
- Japan
- Prior art keywords
- boric acid
- concentration
- tank
- pure water
- pump
- 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.)
- Expired
Links
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 91
- 239000004327 boric acid Substances 0.000 claims description 88
- 239000000498 cooling water Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000011347 resin Substances 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 19
- 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 14
- 239000003456 ion exchange resin Substances 0.000 claims description 12
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 12
- 229920006395 saturated elastomer Polymers 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 description 7
- 230000001172 regenerating effect Effects 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009257 reactivity Effects 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)
Description
【発明の詳細な説明】
本発明は原子炉冷却水または減速材中に溶解し
たホウ酸濃度の制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for controlling the concentration of boric acid dissolved in nuclear reactor cooling water or moderator.
加圧水型原子炉、重水減速型原子炉ではそれぞ
れ冷却水、減速材中に溶解したホウ酸濃度を変化
させることにより原子炉の反応度を制御してい
る。従来、原子炉冷却水または減速材中のホウ酸
濃度制御装置として特公昭51―14675号公報記載
の如き装置が知られている。この従来装置はイオ
ン交換樹脂が充填されたイオン交換器およびこの
イオン交換器に通される冷却水または減速材（以
下これを冷却水等という）の温度を昇降するため
の熱交換器を具え、これにより冷却水等の温度に
対応するイオン交換樹脂の吸着容量の変化を利用
して冷却水等のホウ酸濃度を制御するものであ
る。 In pressurized water reactors and heavy water-moderated reactors, the reactivity of the reactor is controlled by changing the concentration of boric acid dissolved in the cooling water and moderator, respectively. Conventionally, a device as described in Japanese Patent Publication No. 51-14675 has been known as a boric acid concentration control device in reactor cooling water or moderator. This conventional device includes an ion exchanger filled with ion exchange resin and a heat exchanger for raising and lowering the temperature of cooling water or moderator (hereinafter referred to as cooling water, etc.) passed through the ion exchanger, This allows the concentration of boric acid in the cooling water to be controlled by utilizing changes in the adsorption capacity of the ion exchange resin that correspond to the temperature of the cooling water.
第１図はホウ酸除去用樹脂の吸着特性を示すも
のであり、この図を参照して上記の従来装置を用
いてホウ酸濃度を変化させる場合を説明すると次
の通りである。すなわち、(1)冷却水等のホウ酸濃
度が1000ppmの状態ではイオン交換樹脂は入口
濃度1000ppm、温度は70℃、イオン交換樹脂１
当りのホウ酸吸着量は約29ｇで飽和され、出口
濃度も1000ppmとなつている。(2)冷却水等のホ
ウ酸濃度を下げる場合は入口温度を５℃にすると
樹脂の吸着容量が大きくなり、冷却水等のホウ酸
が除去される。冷却水等の量に対する樹脂量を適
当に選んであればイオン交換樹脂１当りの吸着
量が33ｇ、入口濃度500ppm、温度５℃で飽和
し、出口濃度も500ppmとなつて平衡に達する。
(3)冷却水等のホウ酸濃度を上げる場合には入口温
度を70℃に上げることにより(2)および(1)の逆の現
象が起り、1000ppmまで上げることができる。
(4)途中の濃度にする場合は入口温度を適当な値に
すれば任意に調節できる。以上のように、この従
来装置ではイオン交換樹脂を常に入口ホウ酸濃度
と温度に対応したホウ酸の飽和状態にして使用す
るものである。以上のようにこの従来装置では熱
交換器を必須の構成要件とし、これにより運転温
度を広範囲に調節する必要があり、しかも樹脂を
常に飽和状態で使用しているためホウ酸濃度の調
節が速やかに行えず、しかも樹脂１当りの有効
吸着量が４ｇ／と少く、いまだ充分に効率がよ
いものとはいえないものであつた。 FIG. 1 shows the adsorption characteristics of the resin for removing boric acid, and the case where the concentration of boric acid is changed using the above-mentioned conventional apparatus will be explained with reference to this figure as follows. In other words, (1) When the boric acid concentration in cooling water, etc. is 1000 ppm, the ion exchange resin has an inlet concentration of 1000 ppm, a temperature of 70°C, and an ion exchange resin of 1
The amount of boric acid adsorbed per unit is saturated at about 29g, and the outlet concentration is also 1000ppm. (2) When lowering the concentration of boric acid in cooling water, etc., setting the inlet temperature to 5°C will increase the adsorption capacity of the resin and remove boric acid from cooling water, etc. If the amount of resin is appropriately selected relative to the amount of cooling water, etc., the amount of adsorption per ion exchange resin will be 33 g, the inlet concentration will be 500 ppm, the temperature will be saturated at 5° C., and the outlet concentration will also be 500 ppm, reaching equilibrium.
(3) When increasing the concentration of boric acid in cooling water, etc., by increasing the inlet temperature to 70°C, the opposite phenomenon of (2) and (1) occurs, and the concentration can be increased to 1000 ppm.
(4) If you want the concentration to be somewhere in the middle, you can adjust it as you like by setting the inlet temperature to an appropriate value. As described above, in this conventional apparatus, the ion exchange resin is always used in a saturated state with boric acid corresponding to the inlet boric acid concentration and temperature. As mentioned above, this conventional equipment requires a heat exchanger as an essential component, which makes it necessary to adjust the operating temperature over a wide range.Moreover, since the resin is always used in a saturated state, the boric acid concentration can be adjusted quickly. Moreover, the effective amount of adsorption per resin was as small as 4 g/resin, and it could not be said to be sufficiently efficient.
しかして本発明は、未飽和のイオン交換樹脂に
よるホウ酸の吸着除去、温純水によるイオン交換
樹脂の再生、再生液の蒸発および凝縮による温純
水および高濃度ホウ酸の再生、高濃度ホウ酸の注
入の組合せにより簡単に冷却水等のホウ酸濃度を
効率よく制御し得る装置を提供するものである。 Therefore, the present invention is capable of adsorbing and removing boric acid using an unsaturated ion exchange resin, regenerating the ion exchange resin using warm pure water, regenerating warm pure water and high-concentration boric acid by evaporating and condensing the regenerating liquid, and injecting high-concentration boric acid. The object of the present invention is to provide a device that can easily and efficiently control the concentration of boric acid in cooling water, etc. by combining the following methods.
以下に、本発明をその一例を示す添付図面を参
照して説明する。 In the following, the present invention will be explained with reference to the accompanying drawings showing an example thereof.
第２図に示されるように、本発明装置は基本的
に、ホウ酸濃度調節用ポンプ１、イオン交換樹脂
が充填され少くとも一方の樹脂が未飽和の状態に
ある２基のホウ酸除去塔２、高濃度ホウ酸槽３、
ホウ酸供給ポンプ４、純水槽５、純水槽ポンプ
６、ホウ酸濃縮槽７、ホウ酸濃縮槽ポンプ８、蒸
発器９および凝縮器１０で構成される。 As shown in FIG. 2, the apparatus of the present invention basically includes a pump 1 for adjusting boric acid concentration, and two boric acid removal towers filled with ion exchange resin, at least one of which is unsaturated. 2. High concentration boric acid tank 3.
It is composed of a boric acid supply pump 4, a pure water tank 5, a pure water tank pump 6, a boric acid concentration tank 7, a boric acid concentration tank pump 8, an evaporator 9, and a condenser 10.
このような装置において、冷却水等のホウ酸濃
度を変更する必要のない場合は、第２図の太線で
示されるように原子炉（図示せず）から冷却水等
を系内に供給する供給管１１、その途中に設けら
れたホウ酸濃度調節用ポンプ１および戻り管１２
を経て冷却水等をそのまま原子炉へ循環する。こ
の場合、ホウ酸濃度調節用ポンプ１の入口におけ
る冷却水等の温度は50℃程度以下に適宜の手段に
より保持するようにする。 In such equipment, if there is no need to change the concentration of boric acid in the cooling water, etc., supply cooling water, etc. from the reactor (not shown) into the system as shown by the thick line in Figure 2. Pipe 11, boric acid concentration adjustment pump 1 and return pipe 12 provided in the middle thereof
After that, cooling water, etc. is circulated directly to the reactor. In this case, the temperature of the cooling water or the like at the inlet of the boric acid concentration adjusting pump 1 is maintained at about 50° C. or lower by appropriate means.
冷却水等のホウ酸濃度を増大したい場合には第
３図の太線で示されるように、ホウ酸濃度調節用
ポンプ１により供給管１１および戻り管１２を経
て原子炉へ循環される冷却水等に、高濃度ホウ酸
槽３からホウ酸供給ポンプ４によつて戻り管１２
の途中から高濃度ホウ酸を供給する。高濃度ホウ
酸槽３には通常５％程度のホウ酸液が貯えられて
いる。 When it is desired to increase the concentration of boric acid in cooling water, etc., as shown by the thick line in FIG. Then, a return pipe 12 is supplied from the high concentration boric acid tank 3 by the boric acid supply pump 4.
Highly concentrated boric acid is supplied from the middle of the process. The high concentration boric acid tank 3 normally stores about 5% boric acid solution.
また、冷却水等のホウ酸濃度を下げる場合は、
第４図の太線で示されるように冷却水等を未飽和
の状態にあるホウ酸除去塔２へ供給し、そこで塔
内のイオン交換樹脂により冷却水等中のホウ酸を
吸着除去する。この際第１図からわかるように、
例えば入口濃度1000ppm、温度50℃の冷却水等
が塔内に通水された場合、未飽和の状態から樹脂
１当り32ｇまでホウ酸が樹脂に吸着されること
になる。ホウ酸が吸着されてホウ酸濃度が低下し
た冷却水等は戻り管１２を経て原子炉へ循環され
る。 In addition, when lowering the concentration of boric acid in cooling water, etc.,
As shown by the thick line in FIG. 4, cooling water and the like are supplied to the unsaturated boric acid removal tower 2, where boric acid in the cooling water and the like is adsorbed and removed by the ion exchange resin in the tower. At this time, as can be seen from Figure 1,
For example, when cooling water with an inlet concentration of 1000 ppm and a temperature of 50° C. is passed through the tower, up to 32 g of boric acid per resin will be adsorbed from an unsaturated state to the resin. The cooling water, etc., in which boric acid has been adsorbed and the boric acid concentration has decreased, is circulated to the nuclear reactor via the return pipe 12.
本発明装置は２基のホウ酸除去塔を有し、その
うち少くとも一方は塔内の樹脂が未飽和の状態に
あるようにし、ホウ酸除去はこの未飽和の塔にて
行われる。一方のホウ酸除去塔が飽和した場合に
は第５図の太線で示されるように、純水槽５に貯
えられた70℃程度の温純水を純水槽ポンプ６によ
り飽和したホウ酸除去塔２へ送給する。これによ
り塔内の樹脂に吸着されたホウ酸は温度上昇およ
び入口濃度低下により樹脂から脱着され、塔下部
から流出しホウ酸濃縮槽７に入る。ホウ酸濃縮槽
７内の液はホウ酸濃縮槽ポンプ８により蒸発器９
に送られ、そこで一部は蒸発し、他は濃縮されて
ホウ酸濃縮槽７へ戻される。蒸発した水は凝縮器
１０へ送られ、そこで70℃まで冷却されて温純水
となり、純水槽５に戻される。この操作を連続的
に行うことにより、ホウ酸除去塔内の樹脂は入口
濃度0ppm、温度70℃の飽和吸着量、すなわち第
１図でわかるようにほとんど樹脂１当り０ｇま
で脱着される。また、ホウ酸濃縮槽７内の液が規
定濃度の５％程度まで濃縮された場合にはホウ酸
濃縮槽ポンプ８により蒸発器ではなく高濃度ホウ
酸槽３に戻される。 The apparatus of the present invention has two boric acid removal columns, at least one of which keeps the resin in the column unsaturated, and boric acid removal is carried out in this unsaturated column. When one of the boric acid removal towers is saturated, as shown by the bold line in Figure 5, the pure water at a temperature of about 70°C stored in the pure water tank 5 is sent to the saturated boric acid removal tower 2 by the pure water tank pump 6. supply. As a result, the boric acid adsorbed on the resin in the column is desorbed from the resin due to the rise in temperature and the decrease in concentration at the inlet, and flows out from the lower part of the column and enters the boric acid concentrating tank 7. The liquid in the boric acid concentration tank 7 is transferred to an evaporator 9 by a boric acid concentration tank pump 8.
Some of it is evaporated there, and the other part is concentrated and returned to the boric acid concentration tank 7. The evaporated water is sent to the condenser 10, where it is cooled to 70°C to become warm pure water and returned to the pure water tank 5. By continuously performing this operation, the resin in the boric acid removal tower is desorbed to the saturated adsorption amount at an inlet concentration of 0 ppm and a temperature of 70°C, that is, as can be seen in FIG. 1, almost 0 g per resin. Further, when the liquid in the boric acid concentration tank 7 is concentrated to about 5% of the specified concentration, it is returned to the high concentration boric acid tank 3 instead of the evaporator by the boric acid concentration tank pump 8.
このように本発明は、未飽和のイオン交換樹脂
によるホウ酸の吸着除去、温純水によるイオン交
換樹脂の再生、再生液の蒸発および凝縮による温
純水および高濃度ホウ酸の再生、高濃度ホウ酸の
注入の組合せにより冷却水等のホウ酸濃度を制御
するものである。従つて、従来装置の如く熱交換
器の使用は不要となり、第１図からわかるように
イオン交換樹脂１当りの有効吸着量が従来装置
に比べてはるかに大きくとれる。すなわち樹脂量
が少くてすむ。また本発明では樹脂は未飽和状態
で使用されるため、反応時間が短かく、ホウ酸濃
度調節が短時間にしかも効率よく行える。 As described above, the present invention is capable of adsorbing and removing boric acid using an unsaturated ion exchange resin, regenerating the ion exchange resin using warm pure water, regenerating warm pure water and high-concentration boric acid by evaporating and condensing the regenerating liquid, and injecting high-concentration boric acid. This combination controls the concentration of boric acid in cooling water, etc. Therefore, there is no need to use a heat exchanger as in the conventional apparatus, and as can be seen from FIG. 1, the effective adsorption amount per ion exchange resin can be much larger than in the conventional apparatus. In other words, the amount of resin can be reduced. Further, in the present invention, since the resin is used in an unsaturated state, the reaction time is short, and the boric acid concentration can be adjusted in a short time and efficiently.
第１図は温度と樹脂１当りのホウ酸吸着量と
の関係図である。第２図〜第５図は本発明により
冷却水等のホウ酸濃度を制御する場合のフローシ
ートである。
１…ホウ酸濃度調節用ポンプ、２…ホウ酸除去
塔、３…高濃度ホウ酸槽、４…ホウ酸供給ポン
プ、５…純水槽、６…純水槽ポンプ、７…ホウ酸
濃縮槽、８…ホウ酸濃縮槽ポンプ、９…蒸発器、
１０…凝縮器、１１…供給管、１２…戻り管。
FIG. 1 is a diagram showing the relationship between temperature and the amount of boric acid adsorbed per resin. FIGS. 2 to 5 are flow sheets for controlling the concentration of boric acid in cooling water, etc. according to the present invention. 1... Boric acid concentration adjustment pump, 2... Boric acid removal tower, 3... High concentration boric acid tank, 4... Boric acid supply pump, 5... Pure water tank, 6... Pure water tank pump, 7... Boric acid concentration tank, 8 ...boric acid concentration tank pump, 9...evaporator,
10... Condenser, 11... Supply pipe, 12... Return pipe.
Claims (1)
充填され少くとも一方の樹脂が未飽和の状態にあ
る２基のホウ酸除去塔、ホウ酸供給ポンプを有す
る高濃度ホウ酸槽、純水槽ポンプを有する純水
槽、ホウ酸濃縮槽ポンプを有するホウ酸濃縮槽、
蒸発器および凝縮器を具え、原子炉からの原子炉
冷却水または減速材を、所望のホウ酸濃度に応じ
て前記ホウ酸濃度調節用ポンプにより前記未飽和
のホウ酸除去塔に通してホウ酸を除去した後、も
しくは前記ホウ酸除去塔に通さずに、前記高濃度
ホウ酸槽内のホウ酸溶液を加えた後原子炉へ循環
してホウ酸濃度を制御し、前記ホウ酸除去塔の樹
脂が飽和した際には前記純水槽から温純水を該塔
内に通水して樹脂に吸着されたホウ酸を脱着して
前記ホウ酸濃縮槽に貯溜し、このホウ酸溶液を前
記蒸発器に供給し、濃縮液は前記ホウ酸濃縮槽に
戻し、蒸気は前記凝縮器により液化して前記純水
槽に戻し、前記ホウ酸濃縮槽のホウ酸濃度が所定
値に達した場合にはこれを前記高濃度ホウ酸槽へ
戻すようになつている原子炉冷却水または減速材
中のホウ酸濃度の制御装置。1 A boric acid concentration adjustment pump, two boric acid removal towers filled with ion exchange resin and at least one of the resins is unsaturated, a high concentration boric acid tank with a boric acid supply pump, and a pure water tank pump. A pure water tank with a boric acid concentrator tank, a boric acid concentrator tank with a pump,
It is equipped with an evaporator and a condenser, and the reactor cooling water or moderator from the nuclear reactor is passed through the unsaturated boric acid removal column by the boric acid concentration adjusting pump according to the desired boric acid concentration to remove boric acid. After removing the boric acid, or without passing it through the boric acid removal tower, the boric acid solution in the high concentration boric acid tank is added and then circulated to the reactor to control the boric acid concentration, and the boric acid concentration in the boric acid removal tower is When the resin is saturated, hot pure water is passed through the column from the pure water tank to desorb the boric acid adsorbed on the resin and stored in the boric acid concentration tank, and this boric acid solution is sent to the evaporator. The concentrated liquid is returned to the boric acid concentration tank, the vapor is liquefied by the condenser and returned to the pure water tank, and when the boric acid concentration in the boric acid concentration tank reaches a predetermined value, it is returned to the boric acid concentration tank. A control device for the concentration of boric acid in the reactor cooling water or moderator that is returned to the high concentration boric acid tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9327079A JPS5618792A (en) | 1979-07-24 | 1979-07-24 | Control device for boric acid concentration in coolant or moderator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9327079A JPS5618792A (en) | 1979-07-24 | 1979-07-24 | Control device for boric acid concentration in coolant or moderator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5618792A JPS5618792A (en) | 1981-02-21 |
| JPS6230397B2 true JPS6230397B2 (en) | 1987-07-02 |
Family
ID=14077762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9327079A Granted JPS5618792A (en) | 1979-07-24 | 1979-07-24 | Control device for boric acid concentration in coolant or moderator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5618792A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10252921B1 (en) * | 2016-06-09 | 2019-04-09 | Paul Charles Wegner | Process and apparatus for enhancing boron removal from water |
-
1979
- 1979-07-24 JP JP9327079A patent/JPS5618792A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5618792A (en) | 1981-02-21 |
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