JPH04315097A - Recovery device for sodium vapour in inert gas - Google Patents
Recovery device for sodium vapour in inert gasInfo
- Publication number
- JPH04315097A JPH04315097A JP3108916A JP10891691A JPH04315097A JP H04315097 A JPH04315097 A JP H04315097A JP 3108916 A JP3108916 A JP 3108916A JP 10891691 A JP10891691 A JP 10891691A JP H04315097 A JPH04315097 A JP H04315097A
- Authority
- JP
- Japan
- Prior art keywords
- inert gas
- sodium
- mist
- outlet
- heat 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.)
- Granted
Links
- 239000011261 inert gas Substances 0.000 title claims abstract description 73
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 73
- 239000011734 sodium Substances 0.000 title claims abstract description 73
- 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 title claims abstract description 72
- 238000011084 recovery Methods 0.000 title abstract description 14
- 239000003595 mist Substances 0.000 claims abstract description 52
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 239000002923 metal particle Substances 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 150000003385 sodium Chemical class 0.000 description 1
- 239000002915 spent fuel radioactive waste 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
-
- 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)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、高速増殖炉の高温カバ
ーガス等の不活性ガス（通常Ａｒガス）中に蒸発したナ
トリウム蒸気を回収する装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for recovering sodium vapor evaporated into an inert gas (usually Ar gas) such as a high-temperature cover gas of a fast breeder reactor.
【０００２】0002
【従来の技術】従来、高速増殖炉の高温カバーガスであ
る不活性ガス（通常Ａｒガス）中に蒸発したナトリウム
蒸気を回収する装置としては、図３に示すように円筒容
器１の中に金網２を充填し、円筒容器１の外周に上側に
入口３、下側に出口４を有する冷却通路５を形成し、底
部に不活性ガス入口６を設け、上端部側壁に不活性ガス
出口７を設けたものがあり、このナトリウム蒸気の回収
装置は、入口３から空気又は窒素ガスを流入し、冷却通
路５を通して出口から流出することを継続して円筒容器
１の外周を冷却し、この冷却により不活性ガス入口７か
ら流入したナトリウム蒸気を含む不活性ガスを冷却して
ナトリウム蒸気をミスト化し、金網２に衝突捕捉させ、
不活性ガスを不活性ガス出口７から流出させるものであ
る。[Prior Art] Conventionally, as a device for recovering sodium vapor evaporated into an inert gas (usually Ar gas) which is a high-temperature cover gas of a fast breeder reactor, as shown in FIG. A cooling passage 5 having an inlet 3 on the upper side and an outlet 4 on the lower side is formed on the outer periphery of the cylindrical container 1, an inert gas inlet 6 is provided at the bottom, and an inert gas outlet 7 is provided on the side wall of the upper end. This sodium vapor recovery device cools the outer periphery of the cylindrical container 1 by continuously introducing air or nitrogen gas from the inlet 3 and flowing out from the outlet through the cooling passage 5. The inert gas containing sodium vapor flowing in from the inert gas inlet 7 is cooled to turn the sodium vapor into a mist, which is collided with and captured by the wire mesh 2.
The inert gas is caused to flow out from the inert gas outlet 7.
【０００３】また図４に示すように円筒容器１０内の上
部と下部にコーンメッシュ１１，１２を設け、その間に
金属粒子１３を充填し、上端中央に不活性ガス入口１４
、下端中央に不活性ガス出口１５を設け、円筒容器１０
の胴部を管壁１０ａとなしたものもあり、このナトリウ
ム蒸気の回収装置は、管壁１０ａに空気又は窒素ガスを
流通させて円筒容器１０の胴部を冷却し、この冷却によ
り不活性ガス入口１４から流入し金属粒子１３間に浸透
したナトリウム蒸気を含む不活性ガスを冷却して、ナト
リウム蒸気をミスト化して金属粒子１３に付着させ、不
活性ガスを不活性ガス出口１５から流出させるものであ
る。Further, as shown in FIG. 4, cone meshes 11 and 12 are provided at the upper and lower parts of the cylindrical container 10, metal particles 13 are filled between them, and an inert gas inlet 14 is provided at the center of the upper end.
, an inert gas outlet 15 is provided at the center of the lower end, and the cylindrical container 10
In some sodium vapor recovery devices, the body of the cylindrical container 10 is cooled by circulating air or nitrogen gas through the tube wall 10a, and by this cooling, inert gas is removed. The inert gas containing sodium vapor that flows in from the inlet 14 and permeates between the metal particles 13 is cooled, the sodium vapor is turned into a mist and attached to the metal particles 13, and the inert gas is caused to flow out from the inert gas outlet 15. It is.
【０００４】ところで、上記のナトリウム蒸気を回収す
る装置は、処理可能なガス流量が、最大１Ｎｍ３ ／ｍ
ｉｎ 程度である。従って、実証炉に採用予定の、使用
済燃料に付着したナトリウムを高温不活性ガスにより蒸
発除去する乾式洗浄法のように大量（１０〜１５Ｎｍ３
／ｍｉｎ ）の高温不活性ガス中に蒸発したナトリウ
ム蒸気を回収する必要があるものには、冷却効率（伝熱
面積）が小さいので、ナトリウム蒸気を効率的に冷却で
きず、ナトリウム蒸気を回収できない。これを解決しよ
うとすると、円筒容器の径、高さを大きくしなければな
らなくなる。By the way, the above-mentioned sodium vapor recovery device has a processable gas flow rate of 1Nm3/m at maximum.
It is about in. Therefore, a large amount (10 to 15 Nm
/min) In cases where it is necessary to recover sodium vapor evaporated into high-temperature inert gas, the cooling efficiency (heat transfer area) is small, so the sodium vapor cannot be efficiently cooled and the sodium vapor cannot be recovered. . To solve this problem, it becomes necessary to increase the diameter and height of the cylindrical container.
【０００５】[0005]
【発明が解決しようとする課題】そこで本発明は、機器
の物量をさほど大きくすることなく、ナトリウム蒸気を
含む大量の不活性ガスを連続的に処理できるようにした
不活性ガス中のナトリウム蒸気の回収装置を提供しよう
とするものである。[Problems to be Solved by the Invention] Therefore, the present invention aims to reduce the amount of sodium vapor contained in an inert gas so that a large amount of inert gas containing sodium vapor can be continuously processed without increasing the amount of equipment. The aim is to provide a collection device.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
の本発明の不活性ガス中のナトリウム蒸気の回収装置は
、不活性ガスを冷却する多管式熱交換器と、該多管式熱
交換器の不活性ガス出口に接続され内部に不活性ガスを
透過する焼結金属等の有底パイプのミストフィルタが配
され、底部にナトリウム排出口が設けられ、上部側壁に
不活性ガス排出口が設けられているミストトラップとよ
りなるものである。[Means for Solving the Problems] To solve the above-mentioned problems, an apparatus for recovering sodium vapor in an inert gas according to the present invention includes a shell-and-tube heat exchanger for cooling the inert gas, and a shell-and-tube heat exchanger for cooling the inert gas. A mist filter is connected to the inert gas outlet of the exchanger and is made of a bottomed pipe made of sintered metal that allows inert gas to pass through, with a sodium outlet at the bottom and an inert gas outlet on the upper side wall. The mist trap is equipped with a mist trap.
【０００７】[0007]
【作用】上記構成のナトリウム蒸気の回収装置によれば
、温度制御の容易な多管式熱交換器でナトリウム蒸気を
含んだ高温の不活性ガスを効率的に冷却してナトリウム
蒸気をミスト化し、このミスト化したナトリウムを含む
不活性ガスをミストトラップ内に流入し、焼結金属等の
有底パイプのミストフィルタによりナトリウムミストを
捕捉して底に流下させ、ナトリウムミストの除かれた不
活性ガスは不活性ガス排出口から排出される。ミストフ
ィルタの底に流下したナトリウムミストは、ミストトラ
ップの底に滴下し、ナトリウム排出口より排出される。[Operation] According to the sodium vapor recovery device having the above configuration, the high temperature inert gas containing sodium vapor is efficiently cooled using a multi-tubular heat exchanger whose temperature is easily controlled, and the sodium vapor is turned into a mist. This mist-containing inert gas containing sodium flows into the mist trap, and a mist filter made of a bottomed pipe such as sintered metal captures the sodium mist and causes it to flow down to the bottom, and the inert gas from which the sodium mist is removed is is exhausted from the inert gas outlet. The sodium mist that has fallen to the bottom of the mist filter drips onto the bottom of the mist trap and is discharged from the sodium outlet.
【０００８】[0008]
【実施例】本発明による不活性ガス中のナトリウム蒸気
の回収装置の一実施例を図によって説明すると、図１に
おいて２０は不活性ガスを冷却する多管式熱交換器であ
り、２１は冷媒入口、２２は冷媒出口、２３はナトリウ
ム蒸気を含む不活性ガス入口、２４は不活性ガス出口、
２５はナトリウム排出口である。この多管式熱交換器２
０の不活性ガス出口２４には不活性ガス中のナトリウム
ミストを捕捉するミストトラップ２６が接続されている
。このミストトラップ２６は内部中央に図２に示すよう
に不活性ガスを透過しナトリウムミストを捕捉する焼結
金属、例えばステンレス粉等の焼結体よりなる有底パイ
プ２７を等間隔に配列したミストフィルタ２８が設けら
れ、このミストフィルタ２８はカートリッジ方式で、容
器２９の内部に吊垂支持され、上端開口３１から密閉蓋
３２をあけて出し入れできるようになっている。上端開
口３１の周壁には多管式熱交換器２０の不活性ガス出口
２４と連結された不活性ガス流入口３７が設けられ、容
器２９の上部側壁に不活性ガス排出口３３が設けられ、
容器２９の底にはナトリウム排出口３４が設けられてい
る。容器２９の外表面には電気ヒータ３５が設けられ、
保温材３６で被われている。[Embodiment] An embodiment of the sodium vapor recovery device in an inert gas according to the present invention will be explained with reference to the drawings. In Fig. 1, 20 is a shell-and-tube heat exchanger for cooling the inert gas, and 21 is a refrigerant. 22 is a refrigerant outlet, 23 is an inert gas inlet containing sodium vapor, 24 is an inert gas outlet,
25 is a sodium outlet. This multi-tubular heat exchanger 2
A mist trap 26 that captures sodium mist in the inert gas is connected to the inert gas outlet 24 of No. 0. As shown in FIG. 2, this mist trap 26 has bottomed pipes 27 made of a sintered body of sintered metal, such as stainless steel powder, arranged at equal intervals to transmit inert gas and capture sodium mist. A filter 28 is provided, and this mist filter 28 is of a cartridge type and is suspended inside the container 29 and can be taken in and out by opening the airtight lid 32 from the upper end opening 31. An inert gas inlet 37 connected to the inert gas outlet 24 of the multi-tubular heat exchanger 20 is provided on the peripheral wall of the upper end opening 31, and an inert gas outlet 33 is provided on the upper side wall of the container 29.
A sodium outlet 34 is provided at the bottom of the container 29. An electric heater 35 is provided on the outer surface of the container 29,
It is covered with a heat insulating material 36.
【０００９】このように構成された実施例のナトリウム
蒸気の回収装置を、使用済燃料に付着したナトリウムを
高温不活性ガス（Ａｒガス）により蒸発除去する乾式洗
浄法において大量の高温不活性ガス中に蒸発したナトリ
ウム蒸気の回収に使用した場合の作用について説明する
。図１に示される多管式熱交換器２０の冷媒入口２１か
ら熱媒体（窒素ガスの場合もある）を流入し、伝熱管内
を流通させ、冷媒出口２２から流出することを連続させ
る。この状態でナトリウム蒸気を含む高温不活性ガスを
図示せぬ送風機の駆動により不活性ガス入口２３から流
入し、胴内の伝熱管外を流通させて、不活性ガスを冷却
し、ナトリウム蒸気をミスト化する。ミスト化したナト
リウムを含む不活性ガスは不活性ガス出口２４から出て
、この不活性ガス出口２４に連結された不活性ガス流入
口３２から図２に示すミストトラップ２６内に流入し、
ステンレス粉等の焼結体よりなる有底パイプ２７を配列
したミストフィルタ２８によりナトリウムミストが捕捉
されて有底パイプ２７の底に流下し、ナトリウムミスト
の除かれた不活性ガスが不活性ガス排出口３３から排出
される。ミストフィルタ２８の有底パイプ２７の底に流
下したナトリウムミストは貯えられる。この時ナトリウ
ムが固化しないようにミストトラップ２６の容器２９が
外表面の電気ヒータ３５により加熱されて温度制御され
るので、有底パイプ２７の底のナトリウムは徐々に浸透
透過して、ミストトラップ２６の底に滴下して貯留され
、その後適宜ナトリウム排出口３４が開けられて、図示
せぬナトリウムドレンタンクに排出される。[0009] The sodium vapor recovery device of the embodiment constructed as described above is used in a dry cleaning method in which sodium adhering to spent fuel is evaporated and removed using high-temperature inert gas (Ar gas). The effect when used to recover sodium vapor evaporated is explained below. A heat medium (in some cases nitrogen gas) flows in from the refrigerant inlet 21 of the shell-and-tube heat exchanger 20 shown in FIG. 1, flows through the heat transfer tubes, and continuously flows out from the refrigerant outlet 22. In this state, high-temperature inert gas containing sodium vapor is driven by a blower (not shown) to flow in from the inert gas inlet 23 and circulate outside the heat transfer tube inside the shell, cooling the inert gas and turning the sodium vapor into a mist. become The mist-containing inert gas containing sodium exits from the inert gas outlet 24 and flows into the mist trap 26 shown in FIG. 2 from the inert gas inlet 32 connected to the inert gas outlet 24.
Sodium mist is captured by a mist filter 28 in which bottomed pipes 27 made of sintered material such as stainless steel powder are arranged and flows down to the bottom of the bottomed pipes 27, and the inert gas from which the sodium mist has been removed is used as an inert gas exhaust. It is discharged from the outlet 33. The sodium mist that has flowed down to the bottom of the bottomed pipe 27 of the mist filter 28 is stored. At this time, the container 29 of the mist trap 26 is heated and temperature-controlled by the electric heater 35 on the outer surface so that the sodium does not solidify, so the sodium at the bottom of the bottomed pipe 27 gradually permeates through the mist trap 26. After that, the sodium discharge port 34 is opened as appropriate, and the sodium is discharged to a sodium drain tank (not shown).
【００１０】尚、前記多管式熱交換器２０内でミスト化
したナトリウムが胴内面に付着して底に流下したものは
一時的に貯えられた後、ナトリウム排出口２５を開けて
図示せぬナトリウムドレンタンクに排出する。[0010] The sodium mist in the multi-tubular heat exchanger 20 that adheres to the inner surface of the shell and flows down to the bottom is temporarily stored, and then the sodium discharge port 25 is opened and the mist is removed (not shown). Drain into sodium drain tank.
【発明の効果】以上の通り本発明の不活性ガス中のナト
リウム蒸気の回収装置によれば、温度制御の容易な多管
式熱交換器でナトリウム蒸気を含んだ高温の不活性ガス
を効率的に冷却してナトリウム蒸気をミスト化でき、し
かも大量の不活性ガスを処理することができ、またミス
ト化したナトリウムを含む不活性ガスをミストトラップ
内に流入し、焼結金属等の有底パイプのミストフィルタ
によりナトリウムミストを捕捉して底に流下し、ナトリ
ウムミストの除かれた不活性ガスをミストフィルタを透
過して不活性ガス排出口から連続的に排出でき、ミスト
フィルタの底に流下したナトリウムミストは徐々に浸透
してミストトラップの底に滴下し、ナトリウム排出口よ
り排出できるので、不活性ガス中のナトリウム蒸気を連
続的に回収でき、かつ回収効率を高くできる。また、本
発明のナトリウム蒸気の回収装置は、多管式熱交換器と
ミストトラップとよりなり、機器が２基であるが、従来
のように大型化しなければ不活性ガスを処理できないナ
トリウム蒸気の回収装置に比べ機器物量が小さくて済む
。[Effects of the Invention] As described above, according to the apparatus for recovering sodium vapor in inert gas of the present invention, high temperature inert gas containing sodium vapor can be efficiently recovered using a multi-tube heat exchanger whose temperature can be easily controlled. The sodium vapor can be cooled to a mist, and large amounts of inert gas can be processed.In addition, the mist-containing inert gas containing sodium can be flowed into the mist trap, and the inert gas containing sodium vapor can be cooled to form a mist. The mist filter captures the sodium mist and flows down to the bottom, and the inert gas from which the sodium mist has been removed can pass through the mist filter and be continuously discharged from the inert gas outlet, allowing it to flow down to the bottom of the mist filter. Since the sodium mist gradually permeates and drips to the bottom of the mist trap and can be discharged from the sodium outlet, the sodium vapor in the inert gas can be continuously recovered and the recovery efficiency can be increased. In addition, the sodium vapor recovery device of the present invention consists of a multi-tubular heat exchanger and a mist trap, and requires two devices. The amount of equipment required is smaller than that of a recovery device.
【図面の簡単な説明】[Brief explanation of drawings]
【図１】本発明の不活性ガス中のナトリウム蒸気の回収
装置の概略図である。FIG. 1 is a schematic diagram of an apparatus for recovering sodium vapor in an inert gas according to the present invention.
【図２】図１のナトリウム蒸気の回収装置におけるミス
トトラップの拡大断面図である。FIG. 2 is an enlarged sectional view of a mist trap in the sodium vapor recovery device of FIG. 1.
【図３】従来の不活性ガス中のナトリウム蒸気の回収装
置の一例を示す断面図である。FIG. 3 is a sectional view showing an example of a conventional recovery device for sodium vapor in inert gas.
【図４】従来の不活性ガス中のナトリウム蒸気の回収装
置の他の例を示す断面図である。FIG. 4 is a sectional view showing another example of a conventional recovery device for sodium vapor in inert gas.
２０ 多管式熱交換器 ２４ 不活性ガス出口 ２６ ミストトラップ ２７ 焼結金属等の有底パイプ ２８ ミストフィルタ ３３ 不活性ガス排出口 ３４ ナトリウム排出口 20 Multi-tube heat exchanger 24 Inert gas outlet 26 Mist trap 27 Bottomed pipe made of sintered metal, etc. 28 Mist filter 33 Inert gas exhaust port 34 Sodium outlet
Claims (1)
と、該多管式熱交換器の不活性ガス出口に接続され、内
部に不活性ガスを透過する焼結金属等の有底パイプのミ
ストフィルタが配され、底部にナトリウム排出口が設け
られ、上部側壁に不活性ガス排出口が設けられているミ
ストトラップとよりなる不活性ガス中のナトリウム蒸気
の回収装置。Claim 1: A shell-and-tube heat exchanger that cools an inert gas; and a bottomed heat exchanger made of sintered metal or the like that is connected to the inert gas outlet of the shell-and-tube heat exchanger and that allows the inert gas to pass through. A device for recovering sodium vapor in an inert gas consisting of a mist trap equipped with a pipe mist filter, a sodium outlet at the bottom, and an inert gas outlet at the upper side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03108916A JP3103390B2 (en) | 1991-04-12 | 1991-04-12 | Sodium vapor recovery device in inert gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03108916A JP3103390B2 (en) | 1991-04-12 | 1991-04-12 | Sodium vapor recovery device in inert gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04315097A true JPH04315097A (en) | 1992-11-06 |
| JP3103390B2 JP3103390B2 (en) | 2000-10-30 |
Family
ID=14496900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03108916A Expired - Fee Related JP3103390B2 (en) | 1991-04-12 | 1991-04-12 | Sodium vapor recovery device in inert gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3103390B2 (en) |
-
1991
- 1991-04-12 JP JP03108916A patent/JP3103390B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3103390B2 (en) | 2000-10-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |