JPH0435534B2 - - Google Patents
Info
- Publication number
- JPH0435534B2 JPH0435534B2 JP59267233A JP26723384A JPH0435534B2 JP H0435534 B2 JPH0435534 B2 JP H0435534B2 JP 59267233 A JP59267233 A JP 59267233A JP 26723384 A JP26723384 A JP 26723384A JP H0435534 B2 JPH0435534 B2 JP H0435534B2
- Authority
- JP
- Japan
- Prior art keywords
- sodium
- liquid metal
- filler
- impurities
- passage
- 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 - Lifetime
Links
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 30
- 238000007670 refining Methods 0.000 claims description 17
- 239000012535 impurity Substances 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 description 46
- 239000011734 sodium Substances 0.000 description 46
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 44
- 239000000945 filler Substances 0.000 description 14
- 238000005192 partition Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 150000003385 sodium Chemical class 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 239000003518 caustics Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 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
- Manufacture And Refinement Of Metals (AREA)
Description
【発明の詳細な説明】
(イ) 発明の目的
［産業上の利用分野］
この発明は液体金属ナトリウム等の液体金属を
精製するための液体金属精製装置に関するもので
ある。[Detailed Description of the Invention] (a) Object of the Invention [Field of Industrial Application] The present invention relates to a liquid metal refining device for refining liquid metal such as liquid metal sodium.
ナトリウムループ及び高速増殖炉のナトリウム
は腐蝕物や空気等の混入によつて汚染される可能
性がある。このナトリウムの純度が悪くなると材
料の腐蝕を促進し、また不純物の沈澱によつて熱
伝達性及び流動性を悪くするなどの原因となるの
で、ナトリウム等の液体金属の精製装置が必要で
ある。 Sodium in sodium loops and fast breeder reactors can be contaminated by corrosive substances, air, etc. If the purity of this sodium deteriorates, it will accelerate the corrosion of the material, and the precipitation of impurities will cause poor heat transfer and fluidity, so an apparatus for purifying liquid metals such as sodium is required.
［従来の技術］
液体金属ナトリウム等の液体金属の精製装置と
しては、従来から一般にコールドトラツプが使用
されている。このコールドトラツプの原理は、液
体金属を冷却することにより、液体金属中に溶解
した不純物を、溶解度の差を利用して、金属等の
表面に析出させて除去するものである。[Prior Art] Cold traps have been commonly used as purifiers for liquid metals such as liquid metal sodium. The principle of this cold trap is that by cooling the liquid metal, impurities dissolved in the liquid metal are deposited on the surface of the metal and removed using the difference in solubility.
例えば、タンク型高速増殖炉においては、１次
ナトリウムの循環ラインを原子炉容器内に納めた
構造とすることが望まれている。そのため、従来
の液体金属精製装置１０１は第２図に示すよう
に、原子炉容器の上部よりスラブ１０２から懸垂
してナトリウム１０３中に浸漬させている。 For example, in a tank-type fast breeder reactor, it is desired that the primary sodium circulation line be housed within the reactor vessel. Therefore, as shown in FIG. 2, a conventional liquid metal refining apparatus 101 is suspended from a slab 102 from the upper part of the reactor vessel and immersed in sodium 103.
液体金属精製装置１０１は胴１０４内に電磁ポ
ンプ１０５及び充填材１０６を内蔵しており、精
製すべきナトリウムは胴１０４の入口１１６から
電磁ポンプ１０５に駆動されて熱交換器１０７に
入つて精製ずみの低温ナトリウムと熱交換したの
ち、通路１０８から通路１１１に入る。通路１１
１において冷却コイル１１２によつて冷却されて
不純物を析出し、充填材１０６を通過して通路１
１３に入る。充填材１０６を通過する際に、ナト
リウム中の不純物は、充填材１０６に付着して捕
捉され、ナトリウムは精製される。充填材１０６
から通路１１３に出たナトリウムは、一旦上昇し
たのち、通路１１４を下降し、熱交換器１０７で
高温のナトリウムと熱交換したのち、電磁流量計
１１５で流量を測定され、胴１０４の出口１１０
からナトリウム１０３内に戻る。尚、１１７は筒
状の断熱層であり、循環ライン一式１０９を胴１
０４外のナトリウム温度より低く保つている。 The liquid metal refining device 101 has an electromagnetic pump 105 and a filler 106 built into the shell 104, and the sodium to be purified is driven by the electromagnetic pump 105 from the inlet 116 of the shell 104, enters the heat exchanger 107, and is purified. After exchanging heat with low-temperature sodium, it enters passage 111 from passage 108. Passage 11
1, it is cooled by a cooling coil 112 to precipitate impurities, passes through a filler 106, and enters a passage 1.
Enter 13. When passing through the filler 106, impurities in the sodium adhere to and are captured by the filler 106, and the sodium is purified. Filler 106
Sodium that has flown out of the passageway 113 rises once, then descends through the passageway 114, exchanges heat with high-temperature sodium in the heat exchanger 107, and then measures its flow rate with an electromagnetic flowmeter 115.
Return to sodium 103. In addition, 117 is a cylindrical heat insulating layer, and the circulation line set 109 is connected to the body 1.
04 Keep the sodium temperature lower than outside.
［発明が解決しようとする問題点］
このように構成された従来の液体金属精製装置
においては、ナトリウムを循環するための電磁ポ
ンプ１０５は胴１０４内に内蔵されて、高温、高
放射能の場所に設置されることとなり、運転条件
が非常に厳しく、メンテナンスも困難であつた。
また電磁ポンプ１０５等の機器が胴１０４内で占
めるスペースが大きいため、不純物を捕獲するた
めの充填材１０６の容積が小さくならざるを得
ず、このため、短時間で充填材１０６が不純物で
閉塞してしまい、充填材を頻繁に交換する必要が
あり、これらの問題を解決するための対策技術の
開発が望まれていた。[Problems to be Solved by the Invention] In the conventional liquid metal refining apparatus configured as described above, the electromagnetic pump 105 for circulating sodium is built in the body 104, and the electromagnetic pump 105 is built in the body 104 and is used in places with high temperature and high radioactivity. It was decided to be installed in the country, and the operating conditions were extremely severe, making maintenance difficult.
Furthermore, since equipment such as the electromagnetic pump 105 occupies a large space within the body 104, the volume of the filling material 106 for capturing impurities must be small, and as a result, the filling material 106 becomes clogged with impurities in a short period of time. Therefore, it is necessary to frequently replace the filling material, and it has been desired to develop countermeasure technology to solve these problems.
この発明は上記の如き事情に鑑みてなされたも
のであつて、メンテナンスが容易で、充填材の交
換回数も少なくてすむ、液体金属精製装置を提供
することを目的とするものである。 The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a liquid metal refining apparatus that is easy to maintain and requires fewer replacements of fillers.
(ロ) 発明の構成
［問題点を解決するための手段］
この目的に対応して、この発明のタンク組込形
液体金属精製装置は、断熱層を設けた壁体で囲ま
れた空間内に液体金属流路を設け、液体金属流路
の上流側部分に冷却装置を設け下流側部分に不純
物捕捉材を備え、かつ液体金属流路の液体金属の
壁外からの入口を壁外への出口よりも上方に設け
てあることを特徴としている。(b) Structure of the invention [Means for solving the problem] In response to this objective, the tank-incorporated liquid metal refining apparatus of the present invention is provided with A liquid metal channel is provided, a cooling device is provided in the upstream part of the liquid metal channel, an impurity trapping material is provided in the downstream part, and the inlet of the liquid metal channel from outside the wall is connected to the outlet to the outside of the wall. It is characterized by being located above the
以下、この発明の詳細を一実施例に示す図面に
ついて説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, details of the present invention will be explained with reference to the drawings showing one embodiment.
第１図において、１は液体金属精製装置であ
る。液体金属精製装置１は筒状の外胴２と、外胴
２の内側にある内胴３とを有していて、ナトリウ
ム４内に浸漬される。外胴２はフランジ１０によ
り原子炉容器のスラブ５から懸垂支持されてい
る。外胴２のナトリウム４に浸漬される部分の内
面には断熱層６が設けられている。ナトリウム４
の液面７の近傍において、外胴２にナトリウム入
口８が穿設され、また、外胴２の下端部にはナト
リウム出口１１が穿設されている。 In FIG. 1, 1 is a liquid metal refining device. The liquid metal refining device 1 has a cylindrical outer shell 2 and an inner shell 3 located inside the outer shell 2, and is immersed in sodium 4. The outer shell 2 is suspended from a slab 5 of the reactor vessel by a flange 10. A heat insulating layer 6 is provided on the inner surface of the portion of the outer shell 2 that is immersed in the sodium 4. sodium 4
A sodium inlet 8 is bored in the outer shell 2 near the liquid level 7, and a sodium outlet 11 is bored in the lower end of the outer shell 2.
内胴３はフランジ１２によつて外胴２に懸垂支
持されて外胴２内に位置する。内胴３と外胴２と
の間の環状空隙はナトリウムの通路１３を構成す
る。この通路１３のナトリウム入口８との接続部
付近には冷却コイル１４が配設されている。冷却
コイル１４には冷却媒体としての加圧窒素等を流
す。 The inner shell 3 is suspended from the outer shell 2 by a flange 12 and is located within the outer shell 2. The annular gap between the inner shell 3 and the outer shell 2 constitutes a passageway 13 for sodium. A cooling coil 14 is disposed near the connection portion of the passage 13 with the sodium inlet 8. Pressurized nitrogen or the like is passed through the cooling coil 14 as a cooling medium.
内胴３の近傍の内側には内筒１５が設けられ、
かつ内筒１５の上下に仕切板１６，１７が設けら
れ、これらの内胴３、内筒１５、仕切板１６，１
７によつて環状空隙１８が形成さる。また、内筒
１５と仕切板１６によつて筒状の空隙２１が形成
される。空隙２１はナトリウムの通路２２を構成
し、環状空隙１８に対応する部分の内胴３に多数
の流通孔２３が形成され、また内筒１５にも多数
の流通孔２４が形成され、従つて、通路１３と通
路２２とは環状空隙１８を介して連通している。
環状空隙１８には充填材２５が充填されている。
充填材２５はステンレス鋼のワイヤー状のもの或
いは網状のもので構成される。通常、充填材２５
の充填密度は0.2〜0.3ｇ／cm3である。また、不純
物捕捉材として充填材の替わりにバツフルを設け
た構造とすることも可能である。 An inner cylinder 15 is provided inside near the inner cylinder 3,
In addition, partition plates 16 and 17 are provided above and below the inner cylinder 15, and these inner cylinder 3, inner cylinder 15, and partition plates 16 and 1
7 forms an annular cavity 18. Further, a cylindrical gap 21 is formed by the inner cylinder 15 and the partition plate 16. The void 21 constitutes a passage 22 for sodium, and a large number of communication holes 23 are formed in the inner barrel 3 in a portion corresponding to the annular void 18, and a large number of communication holes 24 are also formed in the inner barrel 15, and therefore, The passage 13 and the passage 22 communicate with each other via an annular gap 18.
The annular gap 18 is filled with a filler 25 .
The filler 25 is made of stainless steel wire or mesh. Usually, filler 25
The packing density of is 0.2-0.3 g/ cm3 . Moreover, it is also possible to have a structure in which a buffle is provided instead of a filler as an impurity trapping material.
通路２２の下端部は流量調節弁２６を介してナ
トリウム出口１１と連通している。流量調節弁２
６のステム２７は、仕切板１６、フランジ１２を
貫通して上方に延出し、原子炉容器の外部から弁
体２８を操作し得る。ナトリウム出口１１には電
磁流量計３１が配設されている。 The lower end of the passage 22 communicates with the sodium outlet 11 via a flow control valve 26. Flow control valve 2
The stem 27 of No. 6 extends upwardly through the partition plate 16 and the flange 12, and can operate the valve body 28 from outside the reactor vessel. An electromagnetic flowmeter 31 is disposed at the sodium outlet 11.
［作用］
このように構成された液体金属精製装置におい
て、液体金属を精製する場合には、不純物を含む
ナトリウム４はナトリウム入口８から通路１３に
入り、冷却コイル１４で冷却されて不純物を析出
する。このナトリウムは同時に、冷却コイル１４
による冷却によつて比重が大きくなり、自然対流
により通路１３内を下降し、流通孔２３から充填
材２５に入る。ナトリウム中の析出した不純物は
充填材２５の金属表面に付着して捕捉され、ナト
リウムは精製される。[Function] In the liquid metal refining apparatus configured as described above, when refining a liquid metal, the sodium 4 containing impurities enters the passage 13 from the sodium inlet 8, is cooled by the cooling coil 14, and precipitates impurities. . This sodium is simultaneously added to the cooling coil 14
As a result of cooling, the specific gravity increases, and it descends in the passage 13 due to natural convection and enters the filling material 25 through the circulation hole 23. The precipitated impurities in the sodium adhere to the metal surface of the filler 25 and are captured, and the sodium is purified.
充填材２５により不純物が捕捉され、精製され
たナトリウムは、流通孔２４から通路２２に入
り、次いで、ナトリウム液面７から最も遠い下方
に位置するナトリウム出口１１から流出する。ナ
トリウム流量は、電磁流量計３１により測定し、
流量調節弁２６を上方から操作して調節を行な
う。不純物の捕獲が進み、充填材２５の圧力損失
が増大して、所定のナトリウム流量が得られなく
なつた場合には、フランジ１２を外し、内胴３ご
と充填材２５を引き抜いて交換する。 Impurities are captured by the filler 25, and purified sodium enters the passage 22 through the flow hole 24, and then flows out from the sodium outlet 11 located below, farthest from the sodium liquid level 7. The sodium flow rate is measured by an electromagnetic flowmeter 31,
Adjustment is performed by operating the flow rate control valve 26 from above. When the trapping of impurities progresses and the pressure loss of the filler 25 increases and a predetermined sodium flow rate cannot be obtained, the flange 12 is removed and the filler 25 is pulled out together with the inner shell 3 and replaced.
(ハ) 発明の効果
このように構成された液体金属精製装置におい
ては、ナトリウムの駆動に電磁ポンプ等の循環ポ
ンプを使用せず、もつぱら外胴の上部と下部にナ
トリウム入口及び出口を設け、不純物の析出に必
要なナトリウムの冷却を、同時にナトリウムの駆
動源としても利用し、ナトリウムに温度差による
密度差を生じさせ、自然対流によつてナトリウム
を駆動する。したがつて、電磁ポンプを必要とせ
ず、液体金属精製装置の構造が単純となり、装置
の信頼性が増し、かつメンテナンスも容易とな
り、しかもコスト的にも有利である。(c) Effects of the invention In the liquid metal refining apparatus configured as described above, a circulation pump such as an electromagnetic pump is not used to drive the sodium, and the sodium inlet and outlet are provided exclusively at the upper and lower parts of the outer shell. The cooling of the sodium necessary for the precipitation of impurities is also used as a driving source for the sodium, creating a density difference in the sodium due to the temperature difference, and driving the sodium through natural convection. Therefore, an electromagnetic pump is not required, the structure of the liquid metal refining apparatus is simple, the reliability of the apparatus is increased, maintenance is easy, and it is advantageous in terms of cost.
さらに、胴内に電磁ポンプ等を設置するための
スペースを必要としない結果、充填材の容積を大
きくとることができるので、不純物の捕捉可能な
量が大きくなり、充填材の交換回数を少なくする
ことができる。 Furthermore, since no space is required to install an electromagnetic pump or the like inside the cylinder, the volume of the filling material can be increased, increasing the amount of impurities that can be captured and reducing the number of times the filling material needs to be replaced. be able to.
第１図はこの発明の一実施例に係る液体金属精
製装置を示す縦断面説明図、及び第２図は従来の
液体金属精製装置の一例を示す縦断面説明図であ
る。
１……液体金属精製装置、２……外胴、３……
内胴、４……ナトリウム、５……スラブ、６……
断熱層、８……ナトリウム入口、１１……ナトリ
ウム出口、１４……冷却コイル、２６……流量調
節弁、３１……電磁流量計、１０８，１１１，１
１３，１１４……通路。
FIG. 1 is an explanatory vertical cross-sectional view showing a liquid metal refining apparatus according to an embodiment of the present invention, and FIG. 2 is an explanatory vertical cross-sectional view showing an example of a conventional liquid metal refining apparatus. 1...Liquid metal refining device, 2...Outer shell, 3...
Inner shell, 4...sodium, 5...slab, 6...
Heat insulation layer, 8... Sodium inlet, 11... Sodium outlet, 14... Cooling coil, 26... Flow rate control valve, 31... Electromagnetic flow meter, 108, 111, 1
13,114...Aisle.
Claims (1)
金属流路を設け、前記液体金属流路の上流側部分
に冷却装置を設け下流側部分に不純物捕捉材を備
え、かつ前記液体金属流路の液体金属の壁外から
の入口を壁外への出口よりも上方に設けてあるこ
とを特徴とするタンク組込形液体金属精製装置。1 A liquid metal channel is provided in a space surrounded by a wall provided with a heat insulating layer, a cooling device is provided in an upstream portion of the liquid metal channel, an impurity trapping material is provided in a downstream portion, and the liquid metal A tank-incorporated liquid metal refining device characterized in that the inlet of the liquid metal in the channel from outside the wall is provided above the outlet to the outside of the wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59267233A JPS61147822A (en) | 1984-12-18 | 1984-12-18 | Liquid metal refining apparatus incorporated with tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59267233A JPS61147822A (en) | 1984-12-18 | 1984-12-18 | Liquid metal refining apparatus incorporated with tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61147822A JPS61147822A (en) | 1986-07-05 |
| JPH0435534B2 true JPH0435534B2 (en) | 1992-06-11 |
Family
ID=17441984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59267233A Granted JPS61147822A (en) | 1984-12-18 | 1984-12-18 | Liquid metal refining apparatus incorporated with tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61147822A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63204258A (en) * | 1987-02-20 | 1988-08-23 | Fuji Photo Film Co Ltd | Method for processing silver halide color photographic sensitive material |
| CN102350080B (en) * | 2011-06-30 | 2013-07-31 | 西安交通大学 | Experimental loop purification cold trap of liquid metal sodium |
-
1984
- 1984-12-18 JP JP59267233A patent/JPS61147822A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61147822A (en) | 1986-07-05 |
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