JPS595014B2 - Preparation method of boric acid anion exchange resin - Google Patents
Preparation method of boric acid anion exchange resinInfo
- Publication number
- JPS595014B2 JPS595014B2 JP51012212A JP1221276A JPS595014B2 JP S595014 B2 JPS595014 B2 JP S595014B2 JP 51012212 A JP51012212 A JP 51012212A JP 1221276 A JP1221276 A JP 1221276A JP S595014 B2 JPS595014 B2 JP S595014B2
- Authority
- JP
- Japan
- Prior art keywords
- exchange resin
- boric acid
- ion exchange
- preparation
- anion exchange
- 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 group OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 title claims description 35
- 239000003957 anion exchange resin Substances 0.000 title claims description 9
- 238000002360 preparation method Methods 0.000 title description 17
- 239000004327 boric acid Substances 0.000 claims description 31
- 239000000243 solution Substances 0.000 claims description 22
- 239000012535 impurity Substances 0.000 claims description 8
- 239000012458 free base Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000012670 alkaline solution Substances 0.000 claims description 6
- 230000001172 regenerating effect Effects 0.000 claims description 6
- 125000005619 boric acid group Chemical group 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 150000001450 anions Chemical class 0.000 claims description 2
- 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 description 35
- 239000003456 ion exchange resin Substances 0.000 description 35
- 229920003303 ion-exchange polymer Polymers 0.000 description 35
- 238000005342 ion exchange Methods 0.000 description 11
- 238000007796 conventional method Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- -1 chlorine ions Chemical class 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 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】
本発明は硼酸形陰イオン交換樹脂の調製法、特に加圧水
型原子炉１次冷却材系の硼酸濃度調節用硼酸形陰イオン
交換樹脂の調製法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for preparing a boric acid anion exchange resin, and particularly to a method for preparing a boric acid anion exchange resin for adjusting boric acid concentration in a pressurized water nuclear reactor primary coolant system.
加圧水型原子炉の中性子吸収材として１次冷却材系に使
用される硼酸の濃度調節用として、硼酸形陰イオン交換
樹脂（以下イオン交換樹脂と称す）が使用される。A boric acid type anion exchange resin (hereinafter referred to as ion exchange resin) is used to adjust the concentration of boric acid used in the primary coolant system as a neutron absorbing material in a pressurized water nuclear reactor.
ところでこのイオン交換樹脂の調製法として従来一般に
用いられている方法は、第１図の調製系統図の如く先づ
被再生イオン交換樹脂を充填したイオン交換塔Ａにアル
カリ溶液タンクＢから再生用アルカリ液を流して、遊離
塩基形としてイオン交換樹脂の再生を行い、次に脱塩水
タンクＣからイオン交換塔Ａに脱塩水を流して再生され
たイオン交換樹脂中の残存再生用アルカリ分を洗浄した
のち、最後に硼酸溶液タンクＤから硼酸溶液をイオン交
換樹脂に流して、遊離塩基形を硼酸形に変換して調製す
る方法である。By the way, the method generally used in the past for preparing this ion exchange resin is as shown in the preparation system diagram in Figure 1. First, an alkali for regeneration is poured from an alkali solution tank B into an ion exchange tower A filled with an ion exchange resin to be regenerated. The ion exchange resin was regenerated as a free base form by flowing the solution, and then the desalted water was flowed from the desalted water tank C to the ion exchange tower A to wash away the remaining regenerating alkaline content in the regenerated ion exchange resin. Then, finally, the boric acid solution is poured from the boric acid solution tank D into an ion exchange resin to convert the free base form into the boric acid form.
なおＥは流出硼酸溶液の貯溜タンクである。Note that E is a storage tank for the effluent boric acid solution.
しかしこの方法では上記の如く脱塩水による残存アルカ
リ分の洗浄除去を必要とするため、処理の面倒なアルカ
ル性廃水を生じまたイオン交換樹脂中に残る不純物によ
りイオン交換基の利用率が充分でないなどの欠点がある
。However, as mentioned above, this method requires washing and removing residual alkaline content with demineralized water, resulting in alkaline wastewater that is difficult to treat, and impurities remaining in the ion exchange resin may result in insufficient utilization of ion exchange groups. There are drawbacks.
本発明は従来方法のようにアルカリ性の廃水の発生がな
いばかりか、イオン交換基の利用率が高く、しかも調製
作業の簡単なイオン交換樹脂の調製法の提供を目的とす
るもので、次に図面を用いて本発明の詳細な説明する。The present invention aims to provide a method for preparing an ion exchange resin that not only does not generate alkaline wastewater unlike conventional methods, but also has a high utilization rate of ion exchange groups and is easy to prepare. The present invention will be explained in detail using the drawings.
第２図は本発明の調製用系統図で、図におてＡは被調製
イオン交換樹脂が充填される調製用のイオン交換樹脂塔
、Ｂは再生用アルカリ溶液タンク、Ｄは硼酸溶液タンク
、Ｆは硼酸溶液純化用イオン交換樹脂塔で、硼酸形イオ
ン交換樹脂が充填されており、これによって純化された
硼酸溶液、即ち硼酸以外の不純物例えば硼酸の吸着量を
減少させる塩素イオン、炭酸イオンなどの不純物陰イオ
ン成分を除去した硼酸溶液を作る（以下これを純化され
た硼酸溶液と称す。FIG. 2 is a preparation system diagram of the present invention, in which A is a preparation ion exchange resin column filled with the ion exchange resin to be prepared, B is an alkaline solution tank for regeneration, D is a boric acid solution tank, F is an ion exchange resin tower for purifying boric acid solution, which is filled with boric acid type ion exchange resin, and the purified boric acid solution is purified by this, that is, impurities other than boric acid such as chlorine ions and carbonate ions that reduce the adsorption amount of boric acid. A boric acid solution is prepared from which impurity anion components have been removed (hereinafter this will be referred to as a purified boric acid solution).
）Ｅは前記・ｒオン交換樹脂塔Ａから流れ出る硼酸溶液
を貯溜しておく流出液貯蔵タンクであって、以上で本発
明の調製系統を構成し、次の手順により調製を行う。) E is an effluent storage tank for storing the boric acid solution flowing out from the .r-on exchange resin column A. The above constitutes the preparation system of the present invention, and the preparation is carried out according to the following procedure.
なおコックなどは一切省略している。Note that the cook and other parts are completely omitted.
再生すべきイオン交換樹脂をイオン交換樹脂塔Ａに充填
する。Ion exchange resin column A is filled with the ion exchange resin to be regenerated.
そして再生用アルカリ溶液をタンクＢからイオン交換樹
脂塔Ａ中に流して、イオン交換樹脂を遊離塩基形として
再生を行うｏしかるのち純化用イオン交換樹脂塔Ｆによ
って純化された、タンクＤからの硼酸溶液を調製用のイ
オン交換樹脂塔Ａ内に流して、イオン交換樹脂中に残存
する再生用アルカリ溶液分の洗浄除去と、イオン交換樹
脂を遊離塩基形から硼酸形に変換する作用を行わせ、イ
オン交換樹脂塔Ａへ流入する硼酸溶液の濃度と、イオン
交換樹脂塔Ａから流出して貯溜タンクＥに入る流出硼酸
溶液の濃度とが等しくなったとき、硼酸溶液の流入を停
止して調製を完了する。The alkaline solution for regeneration is then flowed from tank B into ion exchange resin tower A to regenerate the ion exchange resin in the form of a free base.The boric acid from tank D is then purified in ion exchange resin tower F for purification. Flowing the solution into the ion exchange resin column A for preparation, washing away the regenerating alkaline solution remaining in the ion exchange resin and converting the ion exchange resin from the free base form to the boric acid form, When the concentration of the boric acid solution flowing into the ion exchange resin column A becomes equal to the concentration of the boric acid solution flowing out from the ion exchange resin column A and entering the storage tank E, the inflow of the boric acid solution is stopped and preparation is started. Complete.
本発明の特徴は前記した従来の一般的調製法と対比して
判る如く、脱塩水によ゛つてイオン交換樹脂の洗浄を行
うことなく、再生により遊離塩基形となったイオン交換
樹脂を硼酸形とするために用いられる純化された硼酸溶
液により、イオン交換樹脂中に残存する再生用アルカリ
溶液分の洗浄除去に併用する点にある。As can be seen in comparison with the conventional general preparation method described above, the feature of the present invention is that the ion exchange resin, which has been regenerated into a free base form, is converted into boric acid form without washing the ion exchange resin with demineralized water. The purified boric acid solution used for this purpose is also used for cleaning and removing the regenerating alkali solution remaining in the ion exchange resin.
このようにすればアルカリ性廃水の発生を阻止して廃水
処理上の面倒を解決することができ、これと同時に調製
作業を簡単化することができる。In this way, it is possible to prevent the generation of alkaline wastewater and solve the trouble of wastewater treatment, and at the same time, it is possible to simplify the preparation work.
また本発明では純化された硼酸溶液を洗浄と硼酸形への
変換に共用するので調製後イオン交換樹脂に残存する不
純物は純化されない硼酸溶液を用いる従来に比べてそれ
だけ少なくなり、更に脱塩水中の不純物分だけ少なくな
る。In addition, in the present invention, since purified boric acid solution is used for cleaning and conversion to boric acid form, the impurities remaining in the ion exchange resin after preparation are reduced compared to the conventional method that uses unpurified boric acid solution. The amount of impurities will be reduced.
このためイオン交換樹脂のイオン交換基が硼酸以外のも
の、即ち不純物を捕捉している割合が少なくなる。Therefore, the proportion of the ion exchange groups of the ion exchange resin that captures substances other than boric acid, that is, impurities, decreases.
従ってその分だけイオン交換基の利用率の向上を図るこ
とができると同時に、使用イオン交換樹脂容量を減少さ
せることができるため、使用できなくなったイオン交換
樹脂廃棄量を減少させることができる犬なる効果を得る
ことができる。Therefore, it is possible to improve the utilization rate of ion exchange groups by that much, and at the same time, it is possible to reduce the capacity of ion exchange resin used, which makes it possible to reduce the amount of ion exchange resin that can no longer be used and discarded. effect can be obtained.
次に本発明の詳細な説明する。Next, the present invention will be explained in detail.
第３図は第２図の系統による硼酸形イオン交換樹脂の調
製時、流出液貯溜タンクＥに入る流出液のｐＨ１電導度
、ナトリウムイオン濃度ならびに硼酸濃度の変化を追跡
した結果である。FIG. 3 shows the results of tracking changes in the pH 1 conductivity, sodium ion concentration, and boric acid concentration of the effluent entering the effluent storage tank E during the preparation of boric acid type ion exchange resin using the system shown in FIG.
図に見られるように硼酸溶液通液開始直後の流出液の硼
酸濃度は零で、通液量の増加と共に高くなり、最終的に
は流入濃度と一致する。As seen in the figure, the concentration of boric acid in the effluent immediately after the start of the boric acid solution flow is zero, increases as the flow rate increases, and eventually matches the inflow concentration.
流出液のｐＨはアルカリ溶液が残存している間は高いが
、通液量がイオン交換樹脂量の１０倍以上になると７以
下となり、最終的には硼酸のｐＨである５前後に落付く
。The pH of the effluent is high while the alkaline solution remains, but when the amount of liquid passed becomes 10 times or more the amount of ion exchange resin, it becomes less than 7, and eventually settles to around 5, which is the pH of boric acid.
流出液の電導塵も同様な傾向を辿る。Conductive dust in the effluent follows a similar trend.
またす） ＩＪウムイオンは通液量がイオン交換樹脂量
の２０倍以上になると検出されなくなり、はゾ洗浄され
た状態となる。Also, IJium ions are no longer detected when the amount of flowing liquid is 20 times or more the amount of ion exchange resin, and the IJium ions are in a washed state.
次に第１表の結果は本発明調製法と従来の一般的調製法
とのイオン交換基利用率を比較調査したものであって、
本発明によるイオン交換基利用率は９７％であるが従来
方法によるものは９０係程度である。Next, the results in Table 1 are a comparative investigation of the ion exchange group utilization rate between the preparation method of the present invention and the conventional general preparation method.
The ion exchange group utilization rate according to the present invention is 97%, while that according to the conventional method is about 90%.
これは前記したようにイオン交換基が硼酸以外のもの、
即ち不純物を捕捉している割合が、本発明による場合３
係以下、従来方法が１０係程度であることを示すもので
ある。As mentioned above, this means that the ion exchange group is other than boric acid,
In other words, the proportion of impurities captured is 3 in the case of the present invention.
The figures below show that the conventional method has a coefficient of about 10.
これから本発明によるイオン交換基の利用率は従来方法
に比べて７係以上高いため、使用イオン交換樹脂容量を
７係以上減少させることができ、使用後の樹脂廃棄物の
減容化が可能となることがわかる。Since the utilization rate of ion exchange groups according to the present invention is more than 7 times higher than that of conventional methods, the capacity of the ion exchange resin used can be reduced by more than 7 times, making it possible to reduce the volume of resin waste after use. I know what will happen.
以上の説明から明らかなように、本発明はイオン交換樹
脂塔内の再生用アルカリ溶液を脱塩水により予め洗浄除
去することなく、硼酸形イオン交換樹脂の調製を行うよ
うにしたもので、従来のようにアルカリ性の洗浄廃水を
全く出さず、しかも調製作業が簡単となるばかりか、イ
オン交換基の利用率を向上して使用樹脂容量を減少させ
、使用後の樹脂廃棄物の減容化を図りうるなどの大きな
利点が得られるもので、実用上の効果は極めて太きい。As is clear from the above description, the present invention allows boric acid type ion exchange resin to be prepared without washing and removing the regenerating alkaline solution in the ion exchange resin column with demineralized water in advance, which is different from the conventional method. Not only does it not produce any alkaline cleaning waste water and simplify the preparation process, it also improves the utilization rate of ion exchange groups, reduces the volume of resin used, and reduces the volume of resin waste after use. It has great advantages such as water retention, and its practical effects are extremely large.
第１図は従来方法の調製系統図、第２図は本発明の調製
系統図、第３図は実施例の曲線図である。FIG. 1 is a preparation system diagram of a conventional method, FIG. 2 is a preparation system diagram of the present invention, and FIG. 3 is a curve diagram of an example.
Claims (1)
記陰イオン交換樹脂を遊離塩基形として再生したのち、
この再生陰イオン交換樹脂に不純物陰イオン成分を除去
した硼酸溶液を流して、再生陰イオン交換樹脂中に残存
する再生用アルカリ溶液を洗浄除去すると共に、遊離塩
基形を硼酸形に変換して調整することを特徴とする硼酸
形陰イオン交換樹脂の調整法。1 After regenerating the anion exchange resin as a free base form by flowing an alkaline solution through the anion exchange resin to be adjusted,
A boric acid solution from which impurity anion components have been removed is flowed through the regenerated anion exchange resin to wash away the regenerating alkali solution remaining in the regenerated anion exchange resin, and to convert the free base form into the boric acid form for adjustment. A method for preparing a boric acid anion exchange resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51012212A JPS595014B2 (en) | 1976-02-09 | 1976-02-09 | Preparation method of boric acid anion exchange resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51012212A JPS595014B2 (en) | 1976-02-09 | 1976-02-09 | Preparation method of boric acid anion exchange resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5295587A JPS5295587A (en) | 1977-08-11 |
| JPS595014B2 true JPS595014B2 (en) | 1984-02-02 |
Family
ID=11799068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51012212A Expired JPS595014B2 (en) | 1976-02-09 | 1976-02-09 | Preparation method of boric acid anion exchange resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS595014B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11656733B2 (en) | 2018-01-12 | 2023-05-23 | Mitutoyo Corporation | Position specifying method and program |
-
1976
- 1976-02-09 JP JP51012212A patent/JPS595014B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11656733B2 (en) | 2018-01-12 | 2023-05-23 | Mitutoyo Corporation | Position specifying method and program |
| US12210722B2 (en) | 2018-01-12 | 2025-01-28 | Mitutoyo Corporation | Position specifying method and program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5295587A (en) | 1977-08-11 |
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