JPS6252031B2 - - Google Patents
Info
- Publication number
- JPS6252031B2 JPS6252031B2 JP56023058A JP2305881A JPS6252031B2 JP S6252031 B2 JPS6252031 B2 JP S6252031B2 JP 56023058 A JP56023058 A JP 56023058A JP 2305881 A JP2305881 A JP 2305881A JP S6252031 B2 JPS6252031 B2 JP S6252031B2
- Authority
- JP
- Japan
- Prior art keywords
- sodium
- cover gas
- gas
- liquid level
- purification device
- 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
- 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 claims description 48
- 229910052708 sodium Inorganic materials 0.000 claims description 48
- 239000011734 sodium Substances 0.000 claims description 48
- 239000007788 liquid Substances 0.000 claims description 33
- 238000000746 purification Methods 0.000 claims description 19
- 238000005260 corrosion Methods 0.000 claims description 13
- 230000007797 corrosion Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 description 62
- 229910001338 liquidmetal Inorganic materials 0.000 description 21
- 239000012535 impurity Substances 0.000 description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000000717 retained effect 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
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
【発明の詳細な説明】
本発明はナトリウム自由液面を有するナトリウ
ム取扱い機器の、液面変動領域における構造材の
防食方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for preventing corrosion of structural members in a region where the liquid level fluctuates in sodium handling equipment having a free sodium liquid level.
ナトリウム自由液面を有する取扱い機器として
は、例えばナトリウム加熱蒸気発生器（以下SG
と称する）があるが、このSGにおける自由液面
は、SGの負荷変動即ちナトリウムの流量変化、
又ナトリウム漏洩を検知すべくカバーガスをたえ
ず抜いている（水素モニタリングするため）こと
から、その影響を受け、上下に変動する。 An example of handling equipment with a sodium free liquid level is a sodium heated steam generator (hereinafter referred to as SG).
), but the free liquid level in this SG is determined by changes in the load of the SG, that is, changes in the flow rate of sodium,
Also, since the cover gas is constantly removed to detect sodium leakage (to monitor hydrogen), it is affected by this and fluctuates up and down.
前記ナトリウムの自由液面が上昇した場合には
一般にアルゴンガス等のカバーガスを送入し、ガ
ス圧力で自由液面を下げ、逆に自由液面が下降し
た場合にはガス圧を抜いて自由液面を上げる操作
がなされる。 When the free liquid level of sodium rises, a cover gas such as argon gas is generally introduced to lower the free liquid level with gas pressure, and conversely, when the free liquid level falls, the gas pressure is released and the free liquid level is lowered. An operation is performed to raise the liquid level.
ところでこのような機器の運転経験によると、
この自由液面変動領域の構造部材に腐食が起こる
可能性のあることが判明した。その理由はナトリ
ウムの自由液面を下げたときに部材表面に付着し
たナトリウムが、自由液面を下げるために送入し
たカバーガス中の不純物、特にアルゴンガスの場
合には酸素、水素、水分によつて汚れることに起
因するものと推定される。つまりカバーガス中の
これらの不純物がナトリウムと反応し、液面上に
浮いていて液面近傍の腐食を促進するものと考え
られる。 By the way, according to my experience operating such equipment,
It has been found that there is a possibility that corrosion may occur in the structural members in this region of free liquid level fluctuation. The reason for this is that when the free liquid level of sodium is lowered, the sodium adhering to the surface of the component is exposed to impurities in the cover gas introduced to lower the free liquid level, especially oxygen, hydrogen, and moisture in the case of argon gas. It is presumed that this is caused by the product becoming dirty. In other words, it is thought that these impurities in the cover gas react with sodium, float on the liquid surface, and promote corrosion near the liquid surface.
第１図はナトリウム加熱蒸気発生器の例をとつ
て負荷変動による液面変動を制御するためのガス
送入系を示すもので、この図では排気系は省略さ
れている。この第１図においてナトリウムの自由
液面３はナトリウム入口管４より入るナトリウム
流量の変化、ならびにサンプリングノズル１０よ
りも水素モニタリングのためのガス抜きによる圧
力変化のために変化する。 FIG. 1 shows a gas supply system for controlling liquid level fluctuations due to load fluctuations, taking the example of a sodium-heated steam generator, and the exhaust system is omitted in this diagram. In this FIG. 1, the free sodium level 3 changes due to changes in the sodium flow rate entering through the sodium inlet tube 4, as well as pressure changes due to degassing from the sampling nozzle 10 for hydrogen monitoring.
ナトリウムの自由液面３が上昇した場合、サー
ジタンク７内のカバーガスを弁９を介して送入す
る。送入時の圧力は圧力計８で読み取る。サージ
タンク７にはカバーガスボンベ６からカバーガス
が供給される。カバーガスがSG１内に送入さ
れ、カバーガス圧力が上昇すれば自由液面３が低
下する。自由液面３の低下はSG１内に取り付け
られた液位計１１で検知され、一定の液面となつ
たところで弁９が自動的に閉じられ、ガス送入が
停止される。 If the free sodium level 3 rises, cover gas in the surge tank 7 is introduced via the valve 9. The pressure at the time of feeding is read with a pressure gauge 8. Cover gas is supplied to the surge tank 7 from a cover gas cylinder 6. When cover gas is introduced into SG1 and the cover gas pressure increases, free liquid level 3 decreases. A drop in the free liquid level 3 is detected by a liquid level gauge 11 installed in the SG 1, and when the liquid level reaches a certain level, the valve 9 is automatically closed and gas supply is stopped.
カバーガス中の不純物は、前記従来の系統であ
ると、すべてSG１内に入ることになり、これが
SG１内のナトリウム、伝熱管２に付着したナト
リウムと反応して純度を低下させ、構造材の腐食
を増長させるものと推察される。 In the conventional system described above, all impurities in the cover gas would enter SG1, and this
It is presumed that the sodium in the SG 1 reacts with the sodium adhering to the heat exchanger tubes 2, reducing the purity and increasing corrosion of the structural materials.
本発明の目的はカバーガス中の不純物、すなわ
ち腐食有害成分による構造材の腐食を防止しうる
ナトリウム取扱い機器における構造材の防食方法
を提供するにある。 An object of the present invention is to provide a method for preventing corrosion of structural materials in sodium handling equipment, which can prevent corrosion of structural materials caused by impurities in cover gas, that is, corrosive harmful components.
本発明の特徴はカバーガス供給ボンベからナト
リウム取扱い機器に送られるカバーガスを、前記
カバーガス供給ボンベとナトリウム取扱い機器と
を接続するガス送入系に設けられたカバーガス精
製装置内に挿入し、該カバーガス精製装置内の液
体金属と前記カバーガスとを反応させてカバーガ
ス中の腐食有害成分を除去したのち、前記ナトリ
ウム取扱い機器内に送給するところにあり、この
構成により、カバーガス中の腐食有害成分による
機器の構造材の腐食を防止できるものである。 A feature of the present invention is that the cover gas sent from the cover gas supply cylinder to the sodium handling equipment is inserted into a cover gas purification device provided in a gas supply system that connects the cover gas supply cylinder and the sodium handling equipment, The liquid metal in the cover gas purification device is caused to react with the cover gas to remove harmful corrosive components in the cover gas, and then fed into the sodium handling equipment. It is possible to prevent corrosion of the structural materials of equipment due to corrosive harmful components.
以下本発明を図面に基づいて説明する。 The present invention will be explained below based on the drawings.
第２図はナトリウム加熱蒸気発生器の例をとつ
て本発明方法の実施態様を示すもので、SG１と
カバーガス供給ボンベ６とを接続するガス送入系
に、カバーガス精製装置１２が設けられている。 FIG. 2 shows an embodiment of the method of the present invention using an example of a sodium heated steam generator, in which a cover gas purification device 12 is provided in the gas supply system connecting the SG 1 and the cover gas supply cylinder 6. ing.
前記SG１には伝熱管２、ナトリウム入口管
４、ナトリウム出口管５、サンプリングノズル１
０、液位計１１がそれぞれ設けられている。 The SG1 includes a heat transfer tube 2, a sodium inlet tube 4, a sodium outlet tube 5, and a sampling nozzle 1.
0 and a liquid level gauge 11 are provided respectively.
前記伝熱管２には熱交換される水が流され、ま
たナトリウム入口管４からSG１内にナトリウム
が供給され、前記伝熱管２内の水はナトリウムと
熱交換され、蒸気となつて取り出され、また熱交
換後のナトリウムはナトリウム出口管５から流出
し、再び加熱されてナトリウム入口４に戻され
る。 Water to be heat exchanged flows through the heat exchanger tube 2, and sodium is supplied into the SG1 from the sodium inlet pipe 4, and the water in the heat exchanger tube 2 is heat exchanged with the sodium and taken out as steam, Moreover, the sodium after heat exchange flows out from the sodium outlet pipe 5, is heated again, and is returned to the sodium inlet 4.
SG１内のナトリウムの自由液面３は液位計１
１で検知され、またサンプリングノズル１０から
水素モニタリングのため、SG１内のガスが抜き
取られる。 The free liquid level 3 of sodium in SG1 is the level gauge 1
1, and the gas in the SG 1 is extracted from the sampling nozzle 10 for hydrogen monitoring.
前記カバーガス精製装置１２は第１図に示され
るサージタンク７の位置に組み込まれており、液
体金属入口管１３、液体金属出口管１４とを有
し、前記液体金属入口管１３からナトリウム等の
液体金属１５が充填され、自由液面１６を有し、
かつカバーガス領域１７を有する。またカバーガ
ス精製装置１２には、液体金属１５を充填してい
るため、液体金属１５の温度を上げるための予熱
ヒータ（図示省略）が取り付けられている。前記
液体金属入口管１３と液体金属出口管１４は二次
冷却系の液体金属ループ（図示省略）に接続さ
れ、カバーガス精製装置１２内には精製された液
体金属が供給され、かつ例えばコールドトラツプ
などの液体金属精製装置（図示せず）により前記
液体金属１５が精製される。 The cover gas purification device 12 is installed at the position of the surge tank 7 shown in FIG. 1, and has a liquid metal inlet pipe 13 and a liquid metal outlet pipe 14. filled with liquid metal 15 and having a free liquid level 16;
and has a cover gas region 17. Further, since the cover gas purification device 12 is filled with the liquid metal 15, a preheater (not shown) for raising the temperature of the liquid metal 15 is attached. The liquid metal inlet pipe 13 and the liquid metal outlet pipe 14 are connected to a liquid metal loop (not shown) of a secondary cooling system, and purified liquid metal is supplied into the cover gas purification device 12, and for example, a cold truck The liquid metal 15 is purified by a liquid metal purification device (not shown) such as a liquid metal purification device (not shown).
前記液体金属１５にはナトリウム、カリウム、
これらの合金等が用いられる。 The liquid metal 15 includes sodium, potassium,
These alloys are used.
カバーガス精製装置１２内のカバーガス領域１
７の体積はSG１内のナトリウム液面を正常な位
置まで下げるために必要な１回分の量だけ入る体
積であれば十分である。ガス精製装置１２内カバ
ーガスを一旦滞留させた方がカバーガス中の不純
物除去にはより効果的であるので、少なくとも１
回分の送入量が入る体積以上を有することが望ま
しい。 Cover gas area 1 in cover gas purification device 12
The volume of 7 is sufficient as long as it can contain the amount required for one dose to lower the sodium liquid level in SG1 to a normal level. It is more effective to remove impurities in the cover gas if the cover gas is temporarily retained in the gas purification device 12, so at least once
It is desirable to have a volume that can accommodate the batch feed amount or more.
前記ガス送入系にはカバーガス精製装置１２と
SG１間に圧力計８、弁９が設けられている。 The gas supply system includes a cover gas purification device 12 and
A pressure gauge 8 and a valve 9 are provided between the SGs 1 and 1.
本発明はSG１内に送入するカバーガスを、SG
１に入る前段に設けられた前記カバーガス精製装
置１２で精製し、不純物を除去してからSG１内
に送入することを特徴としている。 In the present invention, the cover gas introduced into SG1 is
The cover gas is purified by the cover gas purification device 12 provided before entering the SG 1 to remove impurities, and then fed into the SG 1.
すなわち第２図において前記カバーガスボンベ
６からカバーガス精製装置１２にアルゴンガス等
のカバーガスが挿入され、カバーガス中の不純物
は液体金属１５と反応し、液体金属１５中に除去
される。 That is, in FIG. 2, a cover gas such as argon gas is inserted from the cover gas cylinder 6 into the cover gas purification device 12, and impurities in the cover gas react with the liquid metal 15 and are removed into the liquid metal 15.
カバーガス中の不純物と反応し、汚れた液体金
属１５は液体金属出口管１４より液体金属精製装
置に流れ、そこで精製される。 The contaminated liquid metal 15 that reacts with impurities in the cover gas flows through the liquid metal outlet pipe 14 to the liquid metal purification device, where it is purified.
不純物が除去され、精製されたカバーガスは圧
力計８でガス圧が計測され、弁９を経てSG１内
に送入され、従つて構造材の腐食が防止される。 The gas pressure of the purified cover gas from which impurities have been removed is measured by a pressure gauge 8, and the gas pressure is sent into the SG 1 through a valve 9, thereby preventing corrosion of structural materials.
そしてSG１内のナトリウムの自由液面３が設
定位置まで下降したときは、弁９が自動的に閉じ
られ、カバーガスの送入が停止される。 When the free liquid level 3 of sodium in the SG 1 falls to the set position, the valve 9 is automatically closed and the supply of cover gas is stopped.
なお従来はSG１内に冷たいカバーガスを送入
しており、SG１の効率に悪影響を与えていた
が、本発明によればカバーガス精製装置１２内で
カバーガスが加熱され、SG１内に送入される結
果、SG１内の効率向上を図ることができる。 Conventionally, cold cover gas was fed into SG1, which had a negative effect on the efficiency of SG1, but according to the present invention, the cover gas is heated in the cover gas purification device 12 and then fed into SG1. As a result, efficiency within SG1 can be improved.
尚、カバーガスは、精製装置１２内のナトリウ
ム中を通しても良い。 Note that the cover gas may be passed through the sodium inside the purification device 12.
本発明は以上説明した構成のものであつて、本
発明によればSGの特に自由液面域におけるカバ
ーガス中の不純物による構造材の局部腐食を防止
しうる効果を有する。 The present invention has the configuration described above, and has the effect of preventing local corrosion of the structural material due to impurities in the cover gas of the SG, particularly in the free liquid level region.
第１図は従来のSG内自由液面の変動制御系統
を示す系統図、第２図は本発明方法の一実施例を
示す系統図である。
１……SG（ナトリウム加熱蒸気発生器）、２…
…伝熱管、３……SG内のナトリウムの自由液
面、６……カバーガス供給ボンベ、１２……カバ
ーガス精製装置、１５……カバーガス精製装置内
の液体金属、１６……液体金属の自由液面、１７
……カバーガス領域。
FIG. 1 is a system diagram showing a conventional SG internal free liquid level fluctuation control system, and FIG. 2 is a system diagram showing an embodiment of the method of the present invention. 1...SG (sodium heating steam generator), 2...
...Heat transfer tube, 3...Free liquid level of sodium in SG, 6...Cover gas supply cylinder, 12...Cover gas purification device, 15...Liquid metal in cover gas purification device, 16...Liquid metal Free liquid level, 17
...Cover gas area.
Claims (1)
カバーガスを充満させてなるナトリウム取扱い機
器において、前記カバーガスを、液体ナトリウム
と反応させて、該ガス中の腐食有害成分を除去
し、その後前記機器の空間に供給するようにした
ナトリウム取扱い機器の防食方法。 ２ カバーガスを、ナトリウムの自由液面と接触
させて反応させる第１項記載のナトリウム取扱い
機器の防食方法。 ３ カバーガスを、液体ナトリウム中を通過させ
ることにより反応させる第１項記載のナトリウム
取扱い機器の防食方法。 ４ カバーガス中の腐食有害成分を含むナトリウ
ムを、ナトリウム精製装置により精製する第１項
記載のナトリウム取扱い機器の防食方法。[Claims] 1. In a sodium handling equipment in which a space above the free liquid surface of liquid sodium is filled with an inert cover gas, the cover gas is reacted with the liquid sodium to eliminate corrosive harmful components in the gas. A corrosion protection method for equipment handling sodium, which removes sodium and then supplies it to the space of the equipment. 2. The method for preventing corrosion of sodium handling equipment according to item 1, wherein the cover gas is brought into contact with the free liquid surface of sodium to react. 3. The method for preventing corrosion of sodium handling equipment according to item 1, wherein the cover gas is caused to react by passing through liquid sodium. 4. The method for preventing corrosion of sodium handling equipment according to item 1, wherein sodium containing corrosive harmful components in the cover gas is purified using a sodium purification device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56023058A JPS57137481A (en) | 1981-02-20 | 1981-02-20 | Preventing method for corrosion of apparatus handling sodium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56023058A JPS57137481A (en) | 1981-02-20 | 1981-02-20 | Preventing method for corrosion of apparatus handling sodium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57137481A JPS57137481A (en) | 1982-08-25 |
| JPS6252031B2 true JPS6252031B2 (en) | 1987-11-02 |
Family
ID=12099828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56023058A Granted JPS57137481A (en) | 1981-02-20 | 1981-02-20 | Preventing method for corrosion of apparatus handling sodium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57137481A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100220276B1 (en) * | 1993-11-30 | 1999-10-01 | 전주범 | Ceramic ball for washing in laundry |
-
1981
- 1981-02-20 JP JP56023058A patent/JPS57137481A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57137481A (en) | 1982-08-25 |
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