JPH0221925A - Method for concentrating boron isotope by moving bed - Google Patents
Method for concentrating boron isotope by moving bedInfo
- Publication number
- JPH0221925A JPH0221925A JP17361688A JP17361688A JPH0221925A JP H0221925 A JPH0221925 A JP H0221925A JP 17361688 A JP17361688 A JP 17361688A JP 17361688 A JP17361688 A JP 17361688A JP H0221925 A JPH0221925 A JP H0221925A
- Authority
- JP
- Japan
- Prior art keywords
- boric acid
- exchange resin
- tower
- ion exchange
- isotope
- 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
- 238000000034 method Methods 0.000 title claims abstract description 20
- 229910052796 boron Inorganic materials 0.000 title claims description 13
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 title claims description 12
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000004327 boric acid Substances 0.000 claims abstract description 41
- 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 abstract description 30
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 30
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 abstract description 8
- 229920005989 resin Polymers 0.000 abstract description 8
- 238000001179 sorption measurement Methods 0.000 abstract description 5
- 239000002002 slurry Substances 0.000 abstract description 2
- 239000003957 anion exchange resin Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000005619 boric acid group Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Treatment Of Water By Ion Exchange (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野］
本発明は原子力発電に於いて中性子吸収剤として有用な
ホウ素の同位体１［ＩＢを濃縮する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for concentrating boron isotope 1 [IB] useful as a neutron absorber in nuclear power generation.
［従来の技術］
天然ホウ素には中性子吸収能を有する質量数１０のホウ
素の同位体”Ｂが約２０％含まれている関係で、天然ホ
ウ素を含むホウ酸は中性子吸収剤として原子炉の核分裂
反応制御用（加圧木型原子炉）に、あるいは非常停止用
（沸騰水型原子炉）に利用されている。しかし、ホウ酸
を高濃度で用いると、腐食の問題が起こるので、ホウ酸
を比較的低濃度で使用して、所期の減速効果を得るため
には、ホウ酸に含まれるＩＯＨの存在割合を増大させる
ことが好ましい。[Prior art] Since natural boron contains about 20% of the boron isotope "B" with a mass number of 10, which has neutron absorption ability, boric acid containing natural boron is used as a neutron absorber for nuclear fission in nuclear reactors. It is used for reaction control (pressurized wooden reactors) or for emergency shutdown (boiling water reactors).However, when boric acid is used in high concentrations, corrosion problems occur, so boric acid In order to obtain the desired deceleration effect using a relatively low concentration of IOH, it is preferable to increase the proportion of IOH contained in boric acid.
”Ｂの濃縮方法としては、１０Ｂ化合物と１１Ｂ化合物
の蒸気圧差を利用した精留法が工業的に実施されている
ほか、塩基性陰イオン交換樹脂を固定層に使用して、”
Ｂを濃縮することが「日本原子力学会誌」第１９巻、第
９号、第５４〜６０頁、同じく第１１号、第６４−６９
頁に報告されている。``As a method for concentrating B, in addition to the rectification method that utilizes the vapor pressure difference between 10B and 11B compounds, which is carried out industrially, a basic anion exchange resin is used as a fixed bed.''
Concentrating B is described in "Journal of the Atomic Energy Society of Japan" Vol. 19, No. 9, pp. 54-60, also No. 11, No. 64-69.
It is reported on page.
［発明が解決しようとする課題］
しかし、精留法はホウ素のフッ素化合物を作ったり、耐
食性材料を使用したりするため、精留装置の設備費及び
ランニングコスＩ〜か高くつく不利がある。また、塩基
性陰イオン交換樹脂を使用する方法でも、これを固定層
で用いる場合は、”Ｂの濃縮とイオン交換樹脂の再生を
個別に行い、かつ所定の濃度を得るために多数の固定層
を必要とするため、効率良く１０Ｂの濃縮ができず、工
業的実施には向いていない。[Problems to be Solved by the Invention] However, since the rectification method involves making a fluorine compound of boron and using corrosion-resistant materials, it has the disadvantage that the equipment cost and running cost of the rectification apparatus are high. In addition, even in the method of using basic anion exchange resin, if this is used in a fixed bed, "concentration of B and regeneration of the ion exchange resin are carried out separately, and in order to obtain a predetermined concentration, a large number of fixed beds are used." Since this method requires 10B, it is not possible to efficiently concentrate 10B, and it is not suitable for industrial implementation.
こうした現状に鑑みて、本発明はＩＩＢに関して優先的
に”Ｂを吸着する陰イオン交換樹脂を移動層で利用する
ことにより、１０Ｂの濃縮とイオン交換樹脂の再生を同
一移動層内で連続的に行い、ホウ酸中に存在するＩＯＨ
の割合を効率良く増大させる方法を提供する。In view of these current circumstances, the present invention preferentially uses an anion exchange resin that adsorbs B in the mobile bed to continuously concentrate 10B and regenerate the ion exchange resin in the same mobile bed. IOH present in boric acid
To provide a method for efficiently increasing the ratio of
［課題を解決するための手段］
本発明のホウ素同位体”Ｂの濃縮方法は、同位置１１．
Ｂに優先して同位体１０Ｂを吸着するイオン交換樹脂を
使用してホウ酸に含まれる同位体”Ｂを濃縮する方法に
於いて、
（ａ）交換塔の塔頂に再生済の前記イオン交換樹脂を供
給して塔内にイオン交換樹脂の下向き移動層を形成させ
、
（ｂ）ホウ酸水溶液からなる原料流を、前記交換塔のほ
ぼ中間部位（交換層内）に供給して塔内を」二昇させ、
イオン交換樹脂の下向き移動層と向流的に接触させるこ
とにより、”Ｂをイオン交換樹脂に優先的に吸着させ、
（Ｃ）交換塔の頂部近傍から、１０Ｂ７１１Ｂの比が原
料流のそれより減少したホウ酸水溶液を塔外に取り出し
、
（ｄ）交換塔の底部近傍に純水を供給して塔内を上昇さ
せ、１０Ｂを優先的に吸着して塔内を流下するイオン交
換樹脂と向流的に接触させることにより、”Ｂを水に溶
出させながらイオン交換樹脂を再生し、
（ｅ）再生されたイオン交換樹脂を交換塔底部一
から取り出してこれを交換塔の塔頂に供給し、（ｆ）”
Ｂ ／１１Ｂの比が原料流のそれより増大したホウ酸
水溶液を、上記した原料流の供給部位より下位で、かつ
純水の供給部位より上位の位置から塔外に取り出す、
ことを特徴とする。そして、本発明の方法では、前記の
工程（ｃ）で交換塔から取り出されるホウ酸水溶液の一
部を加熱濃縮し、濃縮されたホウ酸水溶液を原料流供給
部位より上位の位置から交換塔に戻し、加熱濃縮時に得
られる水蒸気を凝縮後、前記の工程（ｄ）で使用する純
水の少なくとも一部として使用することができる。[Means for Solving the Problems] The method for concentrating boron isotope "B" of the present invention is based on the same position 11.
In a method for concentrating isotope "B" contained in boric acid using an ion exchange resin that preferentially adsorbs isotope 10B over B, (a) the regenerated ion exchange resin is placed at the top of an exchange column. A downwardly moving bed of ion exchange resin is formed in the column by supplying a resin, and (b) a raw material stream consisting of an aqueous boric acid solution is supplied to an approximately intermediate portion (inside the exchange layer) of the exchange column to move the inside of the column. ”2-raise;
By contacting the downwardly moving bed of the ion exchange resin in a countercurrent manner, B is preferentially adsorbed onto the ion exchange resin, and (C) from near the top of the exchange column, the ratio of 10B711B decreases relative to that of the feed stream. (d) Supply pure water near the bottom of the exchange tower to raise the inside of the tower, preferentially adsorb 10B, and create a countercurrent flow with the ion exchange resin flowing down inside the tower. (e) taking out the regenerated ion exchange resin from the bottom of the exchange column and supplying it to the top of the exchange column; (f)”
A boric acid aqueous solution whose ratio of B/11B is higher than that of the raw material stream is taken out of the column from a position below the above-mentioned raw material stream supply section and above the pure water supply section. . In the method of the present invention, a part of the boric acid aqueous solution taken out from the exchange tower in step (c) is heated and concentrated, and the concentrated boric acid aqueous solution is transferred to the exchange tower from a position higher than the raw material stream supply section. After returning and condensing the water vapor obtained during heating and concentration, it can be used as at least a part of the pure water used in the step (d).
本発明方法に使用されるイオン交換樹脂は、１１Ｂに関
して”Ｂを優先的に吸着するものであって、これには遊
離塩基型弱塩基性陰イオン交換樹脂が適しており、その
具体例としては、「ダイアイオンＷＡ−２１Ｊを挙げる
ことができる。The ion exchange resin used in the method of the present invention preferentially adsorbs ``B'' with respect to 11B, and a free base type weakly basic anion exchange resin is suitable for this purpose. , ``Diaion WA-21J can be mentioned.
本発明の原料流としては典型的には天然ホウ酸の水溶液
が使用されるが、本発明の方法又はこれ以外の方法によ
って１０Ｂの存在割合が増大させたホウ酸水溶液もＥｌ
独で、あるいは天然ホウ酸の水溶液と混合して、本発明
の原料流に使用することが可能である。Ｊｊｌ料流のホ
ウ酸濃度は任意に選ぶことかできるが、高濃度になると
、処理温度で結晶を析出させることとなり、低濃度にな
ると、収率の低下を来すので、−・静的には２．（１〜
４．０重量％の範囲とすることを可とする。Although an aqueous solution of natural boric acid is typically used as the raw material stream of the present invention, an aqueous boric acid solution in which the abundance of 10B is increased by the method of the present invention or other methods can also be used as an El.
It can be used alone or mixed with an aqueous solution of natural boric acid in the feed stream of the invention. The concentration of boric acid in the Jjl feed stream can be selected arbitrarily, but if the concentration is high, crystals will precipitate at the processing temperature, and if the concentration is low, the yield will decrease, so - static is 2. (1~
It is allowed to be within the range of 4.0% by weight.
［作 用］
次に本発明方法の一実施例をフローシートで示す添付同
曲にそって、本発明の構成とその作用をｉＱ明する。１
は弱塩１１（竹陰イオン交換樹脂の移動層か形成される
交換塔を示し、２はイオン交換樹脂のホッパーを示す。[Function] Next, the structure of the present invention and its function will be explained along with the attached song showing an embodiment of the method of the present invention in the form of a flow sheet. 1
11 indicates an exchange column in which a moving bed of weak salt 11 (bamboo anion exchange resin) is formed, and 2 indicates a hopper of ion exchange resin.
ホッパー２に−・旦蓄えｒ）れた再生済のイオン交換樹
脂は、一定の流量で連続的にホッパーから排出されて交
換塔１の塔頂に供給され、交換塔内で下向きの移動層を
形成する。一方、交換塔下部からは、純水供給ライン５
から純水が供給され、交換塔内に液体の上昇流を形成す
る。交換塔を流下したイオン交換樹脂は、エゼクタ゛７
により純水とのスラリー状態でホッパー２に戻される。The regenerated ion exchange resin previously stored in the hopper 2 is continuously discharged from the hopper at a constant flow rate and supplied to the top of the exchange column 1, where it moves downward as a moving bed. Form. On the other hand, from the lower part of the exchange tower, a pure water supply line 5
Pure water is supplied from the exchange column to form an upward flow of liquid in the exchange column. The ion exchange resin flowing down the exchange tower is transferred to ejector 7.
It is returned to the hopper 2 in a slurry state with pure water.
イオン交換の移送に使用された純水は、ホッパー２でイ
オン交換樹脂と分離され、再度エゼクタ７に送られ、イ
オン交換樹脂の移送に使用される。The pure water used for the ion exchange transfer is separated from the ion exchange resin in the hopper 2, sent to the ejector 7 again, and used for the transfer of the ion exchange resin.
交換塔１はホウ酸吸着部Ｆ、同位体交換部（１、樹脂再
生部Ｈから構成される。ホウ酸吸着部Ｆでは、同位体交
換部Ｇから」二昇して来る液に濃縮されたホウ酸を合流
させて上昇させることにより、ホッパー２から供給され
る再生済のイオン交換樹脂にホウ酸を飽和させる。また
、樹脂再生部Ｈでは、純水供給ライン５から供給される
純水によりイオン交換樹脂の再生を行わせる。The exchange column 1 is composed of a boric acid adsorption section F, an isotope exchange section (1), and a resin regeneration section H. In the boric acid adsorption section F, the liquid that comes up from the isotope exchange section G is concentrated to 2. By combining the boric acid and raising it, the recycled ion exchange resin supplied from the hopper 2 is saturated with boric acid.In addition, in the resin regeneration section H, the purified water supplied from the pure water supply line 5 The ion exchange resin is regenerated.
この結果、同位体交換部Ｇではホウ酸溶液とホウ酸で飽
和したイオン交換樹脂が対向流を形成することになり、
弱塩基性陰イオン交換樹脂がホウ素同位体１１Ｂに優先
して同位体１０Ｂを吸着することから、同位体交換部Ｇ
ではホウ酸中のホウ素同位体１０Ｉ３の同位体１１Ｂに
対する比率が」一部はど小さく、下部はど大きくなる。As a result, in the isotope exchange section G, the boric acid solution and the ion exchange resin saturated with boric acid form counterflows.
Since the weakly basic anion exchange resin adsorbs isotope 10B preferentially to boron isotope 11B, isotope exchange part G
Then, the ratio of boron isotope 10I3 to isotope 11B in boric acid is small in some parts and large in the lower part.
このような状態で同位体交換部Ｇのホウ素同位体１０■
３の同位体’＝Ｂに対する比率が、原料液のそれと同し
部分に原料液を供給することにより、同位体交換部（刺
の上部からは同位体１０Ｂの比率の下がった液を、また
下部からは同位体１０１３の比率の上がった液を抜き出
すことができる。In this state, boron isotope 10 in isotope exchange part G
By supplying the raw material liquid to the part where the ratio of isotope 3 to isotope '=B is the same as that of the raw material liquid, the isotope exchange part (from the upper part of the spine, the liquid with the lower ratio of isotope 10B is supplied, and from the lower part From this, a liquid with an increased ratio of isotope 1013 can be extracted.
ホウ酸吸着部Ｆ上部からは、ホウ酸を樹脂に吸着させる
ことにより濃度の下がったホウ酸溶液が取り出される。From the upper part of the boric acid adsorption section F, a boric acid solution whose concentration has been reduced by adsorbing boric acid to the resin is taken out.
ｒｒから取り出された低濃度のホウ酸は、蒸発器９によ
り濃縮された後、冷却器１０により冷却され、ホウ酸槽
１１に溜められる。二の濃縮ホウ酸は重連のようにホウ
酸吸着部Ｆに循環される。また、蒸発器９で蒸発した蒸
父は、凝縮器■３で凝縮され、純水貯槽１４に溜められ
、樹脂再生部Ｈへの純水、あるいはエゼクタ７の駆動水
の一部として使用される。The low concentration boric acid taken out from the rr is concentrated by an evaporator 9, then cooled by a cooler 10, and stored in a boric acid tank 11. The second concentrated boric acid is circulated to the boric acid adsorption section F like a recirculation system. In addition, the steam father evaporated in the evaporator 9 is condensed in the condenser 3, stored in the pure water storage tank 14, and used as pure water to the resin regeneration section H or as part of the driving water for the ejector 7. .
［発明の効果］
本発明の方法では、”Ｂに優先して１０Ｂを吸着する陰
イオン交換樹脂にて、単一の竪型交換塔内に移動層を形
成せしめ、しかもその移動層で０Ｂの濃縮とイオン交換
樹脂の再生を同時に行うことができるので、ホウ酸水溶
液中の１０１３を連続的に、且つ効率良く濃縮すること
ができる。[Effects of the Invention] In the method of the present invention, a moving bed is formed in a single vertical exchange tower using an anion exchange resin that adsorbs 10B preferentially to B, and the moving bed absorbs 0B. Since concentration and regeneration of the ion exchange resin can be performed simultaneously, 1013 in the boric acid aqueous solution can be concentrated continuously and efficiently.
第１図は本発明の一態様を示すフローシー１へである。
１：交換塔 ２：ホッパ−３：原料流供給ライン４：液
排出ライン ５：純水供給ライン ６：生成流（１ＩＩ
Ｂ ７１１１ Ｂ大）排出ライン ７：エシエクタ８
：再生済樹脂移送ライン ９：蒸発器 １０：冷却器
１１ニホウ酸槽 １ｚニホウ酸戻しライン１３：凝縮器
１４：純水槽 １５：純水戻しライン１６：水蒸気移
送ライン １７：凝縮純水移送ライン１８：純水戻しラ
イン １９ニホウ酸戻しポンプ２０：純水供給ポンプ
２１：劣化ホウ酸（１°Ｂ ／” Ｂ小）排出ラインFIG. 1 is a flow sheet 1 showing one embodiment of the present invention. 1: Exchange column 2: Hopper 3: Raw material stream supply line 4: Liquid discharge line 5: Pure water supply line 6: Product stream (1II
B 7111 B large) Discharge line 7: Ejector 8
: Recycled resin transfer line 9: Evaporator 10: Cooler
11 Diboric acid tank 1z Diboric acid return line 13: Condenser 14: Pure water tank 15: Pure water return line 16: Steam transfer line 17: Condensed pure water transfer line 18: Pure water return line 19 Diboric acid return pump 20: Pure water supply pump
21: Degraded boric acid (1°B/”B small) discharge line
Claims (1)
Ｂを吸着するイオン交換樹脂を使用してホウ酸に含まれ
る同位体＾１＾０Ｂを同位体＾１＾１Ｂに対して濃縮す
る方法に於いて、 （ａ）交換塔の塔頂に新鮮な又は再生済の前記イオン交
換樹脂を供給して塔内にイオン交換樹脂の下向き移動層
を形成させ、 （ｂ）ホウ酸水溶液を前記塔内を上昇させてイオン交換
樹脂の下向き移動層と向流的に接触させることにより、
＾１＾０Ｂをイオン交換樹脂に優先的に吸着させ、 （ｃ）交換塔の頂部近傍から、＾１＾０Ｂ／＾１＾１Ｂ
の比が原料流のそれより減少したホウ酸水溶液を塔外に
取り出し、 （ｄ）交換塔の底部近傍に純水を供給して塔内を上昇さ
せ、＾１＾０Ｂを優先的に吸着して塔内を流下するイオ
ン交換樹脂と向流的に接触させることにより、＾１＾０
Ｂを水に溶出させながらイオン交換樹脂を再生し、 （ｅ）再生されたイオン交換樹脂を交換塔底部から取り
出してこれを交換塔の塔頂に供給し、 （ｆ）＾１＾０Ｂ／＾１＾１Ｂの比が原料流のそれより
増大したホウ酸水溶液を、上記した原料流の供給部位よ
り下位で、かつ純水の供給部位より上位の位置から塔外
に取り出す、 ことを特徴とする同位体＾１＾０Ｂの濃縮方法。 ２、前記の工程（ｃ）で交換塔から取り出されるホウ酸
水溶液の一部を加熱濃縮し、濃縮されたホウ酸水溶液を
原料流供給部位より上位の位置から交換塔に戻し、加熱
濃縮時に得られる水蒸気を凝縮後、前記の工程（ｄ）で
使用する純水の少なくとも一部として使用する請求項１
記載の方法。[Claims] 1. Boron isotope ^1^0 in preference to boron isotope ^1^1B
In the method of concentrating the isotope ^1^0B contained in boric acid to the isotope ^1^1B using an ion exchange resin that adsorbs B, (a) fresh Alternatively, the recycled ion exchange resin is supplied to form a downwardly moving layer of the ion exchange resin in the column, and (b) the boric acid aqueous solution is raised in the column to flow countercurrently to the downwardly moving layer of the ion exchange resin. By bringing it into contact with
^1^0B is preferentially adsorbed on the ion exchange resin, and (c) ^1^0B/^1^1B is absorbed from near the top of the exchange tower.
The aqueous boric acid solution whose ratio of By contacting the ion exchange resin flowing down the column in a countercurrent manner, ^1^0
Regenerate the ion exchange resin while dissolving B into water, (e) take out the regenerated ion exchange resin from the bottom of the exchange tower and supply it to the top of the exchange tower, (f) ^1^0B/^ A boric acid aqueous solution having a ratio of 1^1B greater than that of the raw material stream is taken out of the column from a position lower than the above-mentioned raw material stream supply part and higher than the pure water supply part. Method for enriching isotope ^1^0B. 2. A part of the boric acid aqueous solution taken out from the exchange tower in step (c) above is heated and concentrated, and the concentrated boric acid aqueous solution is returned to the exchange tower from a position above the raw material stream supply part, and the obtained boric acid solution is heated and concentrated. Claim 1, wherein the water vapor is condensed and used as at least a part of the pure water used in the step (d).
Method described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17361688A JPH0221925A (en) | 1988-07-11 | 1988-07-11 | Method for concentrating boron isotope by moving bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17361688A JPH0221925A (en) | 1988-07-11 | 1988-07-11 | Method for concentrating boron isotope by moving bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0221925A true JPH0221925A (en) | 1990-01-24 |
Family
ID=15963914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17361688A Pending JPH0221925A (en) | 1988-07-11 | 1988-07-11 | Method for concentrating boron isotope by moving bed |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0221925A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0593213A1 (en) * | 1992-10-13 | 1994-04-20 | Westinghouse Electric Corporation | An improved instrumentation and control scheme for implementing a boron isotopic enrichment process |
| US7976708B2 (en) | 2008-05-12 | 2011-07-12 | Secretary, Department of Atormic Energy | Innovative cut-and-feed operation for enhancing the performance of ion-exchange chromatographic separation |
| CN102145256A (en) * | 2010-02-10 | 2011-08-10 | 中国核动力研究设计院 | Method for separating boron isotopes by simulated moving bed chromatography |
| CN104226112A (en) * | 2014-09-26 | 2014-12-24 | 中国科学院青海盐湖研究所 | Boron isotope separation method |
| CN107096383A (en) * | 2017-05-04 | 2017-08-29 | 天津大学 | The purposes of metal-organic framework materials Separation of boron isotopes |
| WO2025178094A1 (en) * | 2024-02-22 | 2025-08-28 | 良夫 今堀 | Composition and method for concentrating boron isotope water-soluble system |
-
1988
- 1988-07-11 JP JP17361688A patent/JPH0221925A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0593213A1 (en) * | 1992-10-13 | 1994-04-20 | Westinghouse Electric Corporation | An improved instrumentation and control scheme for implementing a boron isotopic enrichment process |
| US7976708B2 (en) | 2008-05-12 | 2011-07-12 | Secretary, Department of Atormic Energy | Innovative cut-and-feed operation for enhancing the performance of ion-exchange chromatographic separation |
| CN102145256A (en) * | 2010-02-10 | 2011-08-10 | 中国核动力研究设计院 | Method for separating boron isotopes by simulated moving bed chromatography |
| CN104226112A (en) * | 2014-09-26 | 2014-12-24 | 中国科学院青海盐湖研究所 | Boron isotope separation method |
| CN107096383A (en) * | 2017-05-04 | 2017-08-29 | 天津大学 | The purposes of metal-organic framework materials Separation of boron isotopes |
| WO2025178094A1 (en) * | 2024-02-22 | 2025-08-28 | 良夫 今堀 | Composition and method for concentrating boron isotope water-soluble system |
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