JPS63130789A - Improved electrolytic cell - Google Patents

Improved electrolytic cell

Info

Publication number
JPS63130789A
JPS63130789A JP61276794A JP27679486A JPS63130789A JP S63130789 A JPS63130789 A JP S63130789A JP 61276794 A JP61276794 A JP 61276794A JP 27679486 A JP27679486 A JP 27679486A JP S63130789 A JPS63130789 A JP S63130789A
Authority
JP
Japan
Prior art keywords
partition plate
gas
anode
electrolytic cell
cathode
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
Application number
JP61276794A
Other languages
Japanese (ja)
Other versions
JPH0757914B2 (en
Inventor
Tokuyuki Iwanaga
岩永 徳幸
Hiroyuki Momotake
宏之 百武
Akimasa Tasaka
明政 田坂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP61276794A priority Critical patent/JPH0757914B2/en
Publication of JPS63130789A publication Critical patent/JPS63130789A/en
Publication of JPH0757914B2 publication Critical patent/JPH0757914B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

PURPOSE:To prevent the bipolarization of a partition plate by coating at least one side of the plate provided in an electrolytic cell with a fluororesin. CONSTITUTION:In the electrolytic cell 1 for molten salt electrolysis, etc., the partition plate 10 is provided for isolating the gas generated from an anode 5 from the gas generated from a cathode 6. The one side of the partition plate 10 opposed to the anode 5 or the side opposed to the cathode 6 or both sides are coated with the film 11 of a fluororesin such as polytetrafluoroethylene. As a result, the bipolarization of the partition plate 10 can be prevented, and the mixing of H2 into the gaseous NF3, F2, etc., generate from the anode 5 can be prevented. Furthermore, the problems such as explosions can be eliminated and the corrosion of the partition plate 10 can be prevented.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、溶融塩電解法による三弗化窒素ガス(NFs
)や弗素ガス(F2)の製造の際に使用される電解槽の
改良に関する。
Detailed Description of the Invention (Industrial Field of Application) The present invention is directed to the production of nitrogen trifluoride gas (NFs) by molten salt electrolysis.
) and fluorine gas (F2).

(従来の技術) 酸性フッ化アンモニウムまたはフッ化アンモニウムと弗
化水素を原料とするN)l、F・IP系や、これに更に
酸性フッ化カリウムまたはフッ化カリウムを原料として
加えたにF−NHaF−HF系溶融塩電解法によるNF
3ガスの製造、並びに酸性フッ化カリウムまたは弗化カ
リウムと弗化水素を原料とするKF・肝系溶融塩電解法
によるF2ガスの製造を行なう場合、電解槽には陽極か
ら発生するガスと陰極から発生するガスを隔離するため
の隔板が設けられている。
(Prior art) N)l, F-IP system using acidic ammonium fluoride or ammonium fluoride and hydrogen fluoride as raw materials, and N-F-IP system in which acidic potassium fluoride or potassium fluoride is further added as a raw material. NF by NHaF-HF molten salt electrolysis method
When producing F2 gas by the KF/liver-based molten salt electrolysis method using acidic potassium fluoride or potassium fluoride and hydrogen fluoride as raw materials, the electrolytic cell contains the gas generated from the anode and the cathode. A diaphragm is provided to isolate gases generated from the

上記電解槽においては、陽極からはNF3ガスまたはF
2ガスが、陰極からは水素ガス(F2)が発生する。こ
の二種類のガス、即ち、NF3ガスまたはF2ガスとF
2ガスは、混合すると爆発の危険性が極めて大きいので
、発生した二種類のガスの電解槽内での混合を防ぐ目的
で、陽極と陰極を隔離するための隔板が設けられている
。さらに、この隔板には電解浴に腐蝕されにくい鉄、銅
、ニッケルなどの金属板が通常使用されている。
In the above electrolytic cell, NF3 gas or F
Hydrogen gas (F2) is generated from the cathode. These two types of gas, namely NF3 gas or F2 gas and F2 gas,
Since there is an extremely high risk of explosion when the two gases are mixed, a partition plate is provided to separate the anode and cathode in order to prevent the two gases from mixing in the electrolytic cell. Furthermore, a metal plate made of iron, copper, nickel, or the like, which is not easily corroded by an electrolytic bath, is usually used for this partition plate.

しかし、この様に電解槽には隔板を設けているにもかか
わらず、この電解槽を用いてNF3ガスやF2ガスの製
造を行なう場合、陽極から発生するNF、ガスまたはF
2ガス中に少なからずF2ガスが混在してきて、爆発限
界内のガスが生成する場合がある。これは、溶融塩電解
時に隔板の複極化現象が起こり、複極化した隔板の陽極
と相対する面からH2ガスが発生し、この■2ガスがN
F3ガスまたはFzガスと混合し、爆発限界内の混合ガ
スを生成するからである。
However, even though the electrolytic cell is equipped with a diaphragm in this way, when producing NF3 gas or F2 gas using this electrolytic cell, NF, gas, or F2 gas generated from the anode is
A considerable amount of F2 gas may be mixed in with the two gases, and gas within the explosive limit may be generated. This is because bipolarization of the diaphragm occurs during molten salt electrolysis, H2 gas is generated from the surface of the bipolar diaphragm facing the anode, and this 2 gas is
This is because it mixes with F3 gas or Fz gas to produce a mixed gas within the explosive limit.

そこで、このような爆発限界内の混合ガスの生成を防止
するため、従来は陽極発生ガス中にN2等の不活性ガス
を混入させ、陽極発生ガス中に混入するH2ガスの濃度
を低下させることで爆発の危険を回避する方法が取られ
て来た。
Therefore, in order to prevent the generation of such a mixed gas within the explosive limit, conventional methods have been to mix an inert gas such as N2 into the anode generated gas to reduce the concentration of H2 gas mixed into the anode generated gas. Measures have been taken to avoid the risk of explosion.

(発明が解決しようとする問題点) しかし、この方法は隔板の複極化を防止するという方法
ではないので、NF3ガスまたはF2ガス中に水素ガス
が混入したままであり、根本的な問題解決にはならず、
電解条件によっては依然爆発の危険性は残っている。更
に、隔板は、前記の通りその材質が鉄、銅、ニッケルな
どの金属板であるので、電解浴に腐蝕されにくいとはい
え、若干の腐蝕は免れ難いという問題もある。
(Problem to be solved by the invention) However, since this method does not prevent bipolarization of the diaphragm, hydrogen gas remains mixed in the NF3 gas or F2 gas, which is a fundamental problem. It's not a solution,
Depending on the electrolysis conditions, there is still a risk of explosion. Furthermore, as mentioned above, the material of the partition plate is a metal plate made of iron, copper, nickel, etc., so although it is not easily corroded by the electrolytic bath, there is a problem that some corrosion is inevitable.

(問題点を解決するための手段) 本発明者等は、根本的な解決手段である隔板の複極化防
止について種々検討を重ねた結果、隔板の少なくとも片
面をフッ素系樹脂で被覆すれば隔板の複極化を防止する
ことが可能で、しかも隔板も腐蝕されないことを見出し
、本発明を完成させるに至ったのである。
(Means for solving the problem) As a result of various studies on preventing bipolarization of the partition plate, which is a fundamental solution, the inventors of the present invention discovered that at least one side of the partition plate should be coated with a fluororesin. They discovered that it is possible to prevent bipolarization of the diaphragm and that the diaphragm is not corroded, leading to the completion of the present invention.

すなわち、本発明は、陽極から発生するガスと陰極から
発生するガスを隔離するための隔板の少なくとも片面が
フッ素系樹脂被膜で覆われてなることを特徴とする改良
された電解槽であって、特には隔板の両面がフッ素系樹
脂被膜で覆われている。
That is, the present invention is an improved electrolytic cell characterized in that at least one side of a partition plate for separating gas generated from the anode and gas generated from the cathode is covered with a fluororesin coating. In particular, both sides of the partition plate are covered with a fluororesin coating.

本発明を図面に基いて更に詳細に説明する。The present invention will be explained in more detail based on the drawings.

陽極から発生するガスと陰極から発生するガスを隔離す
るための隔板の形状には色々なものがある。例えば、隔
板が平板状である場合、隔板が陽極または陰極を取り巻
く形状である場合などがあり、特殊な例としては、蓋板
の中央部が下方にU字形に折曲っていてこの折曲り部が
隔板の役割を果す形状のものもある。
There are various shapes of the partition plate for separating the gas generated from the anode and the gas generated from the cathode. For example, the diaphragm may be flat, or the diaphragm may be shaped to surround an anode or a cathode. In special cases, the center of the lid plate may be bent downward into a U-shape. Some have a shape in which the bent portion acts as a partition.

第1図、第3図、第5図は隔板が平板状である場合の、
第7図は隔板が陽極を取り巻く形状である場合の、第9
図は隔板が陰極を取り巻く形状である場合の、第11図
は隔板が陽極を取り巻く形状でありかつ電解槽本体が陰
極である場合の、第13図は蓋板の中央部がU字形に折
曲っていて該折曲り部が隔板の役割を果たす形状の場合
の、夫々の電解槽の縦断面図であり、第2図は第1図の
、第4図は第3図の、第6図は第5図の、第8図は第7
図の、第10図は第9図の、第12図は第11図の第1
4図は第13図のA−Aゝ矢視図を示す。
Figures 1, 3, and 5 show the case where the diaphragm is in the form of a flat plate.
Figure 7 shows the ninth case where the diaphragm is shaped to surround the anode.
Figure 11 shows the case where the partition plate is shaped to surround the cathode, Figure 11 shows the case where the partition plate is shaped to surround the anode and the electrolytic cell body is the cathode, and Figure 13 shows the case where the center part of the lid plate is U-shaped. FIG. 2 is a vertical cross-sectional view of each electrolytic cell in the case where the bent portion is bent to act as a partition plate, and FIG. 2 is the same as that in FIG. 1, FIG. 4 is the same as that in FIG. Figure 6 is Figure 5, Figure 8 is Figure 7.
Figure 10 is Figure 9, Figure 12 is Figure 11, Figure 1.
FIG. 4 shows a view taken along the line A-A in FIG. 13.

第1図及び第2図はフッ素系樹脂被膜11が隔板10の
陽極5に相対する面を覆っている図、第3図及び第4図
は逆に隔板10の陰極6に相対する面を覆っている図、
第5図及び第6図は隔板10の両面を覆っている図であ
り、何れも本発明の目的を達することが出来る。
1 and 2 are views in which the fluororesin coating 11 covers the surface of the diaphragm 10 facing the anode 5, and FIGS. 3 and 4 conversely show the surface of the diaphragm 10 facing the cathode 6. A diagram covering the
5 and 6 are views covering both sides of the diaphragm 10, and both can achieve the object of the present invention.

第7図及び第8図は隔板10が陽極5を取り巻く形で設
けられていてフッ素系樹脂被膜11が該隔板10の外側
面を覆っている図であり、第9回及び第10図は隔板1
0が陰極6を取り巻く形で設けられていてフッ素系樹脂
被1ullが該隔板10の外側面を覆っている図であり
、また第11図及び第12図は隔板10が陽極5を取り
巻く形で設けられていてフッ素系樹脂被膜11が該隔板
10の外側面を覆いかつ電解槽本体1が陰極6である場
合の図であるが、何れの場合も第1回〜第6図に示すと
同様な考え方で、隔板10の内側面または両面を覆うこ
とでも本発明の目的を達することが出来る。
7 and 8 are views in which the partition plate 10 is provided surrounding the anode 5 and the fluororesin coating 11 covers the outer surface of the partition plate 10; is partition plate 1
0 surrounds the cathode 6 and a fluororesin coating covers the outer surface of the partition plate 10, and FIGS. 11 and 12 show that the partition plate 10 surrounds the anode 5. This figure shows a case in which the fluororesin coating 11 covers the outer surface of the partition plate 10 and the electrolytic cell body 1 is the cathode 6. The object of the present invention can also be achieved by covering the inner surface or both sides of the partition plate 10 based on the same idea as shown.

尚、隔板10の両面をフッ素系樹脂被膜11で覆う場合
は隔板の腐蝕を完全に防止出来るので特に好ましい。
It is particularly preferable to cover both sides of the partition plate 10 with the fluororesin coating 11 because corrosion of the partition plate can be completely prevented.

また、電解槽の蓋板3の中央部が下方にU字形に折曲っ
ていて該折曲り部が隔板の役割を果たす形状の場合は、
第13図及び第14図に示すように該折曲り部の外側面
(電極と相対する面)をフッ素系樹脂で被覆すれば良い
。第13図及び第14図は該折曲り部の陽極5に対する
面のみを被覆しているが、これも第1図〜第6図の場合
と同様に、陰極6に対する面または両面を被覆すること
も可能なことは勿論である。本発明の電解槽は、上記説
明の通り、隔板10の少なくともその片面がフッ素系樹
脂被膜11で覆われているものである。
In addition, if the center part of the lid plate 3 of the electrolytic cell is bent downward into a U-shape and the bent part plays the role of a partition plate,
As shown in FIGS. 13 and 14, the outer surface of the bent portion (the surface facing the electrode) may be coated with a fluororesin. In FIGS. 13 and 14, only the surface of the bent portion facing the anode 5 is coated, but as in the case of FIGS. 1 to 6, the surface facing the cathode 6 or both surfaces may be coated. Of course, this is also possible. As explained above, in the electrolytic cell of the present invention, at least one side of the partition plate 10 is covered with a fluororesin coating 11.

この種の電解槽の中には、第1図〜第14図に示す様に
、電解槽の底板部には底板の上にフッ素系樹脂板が設け
てあって、底板の腐蝕を防止する様になっているものも
ある。また、陽極5又は陰極6に接続されている接続棒
7a、7bは、蓋板3とは絶縁材8a、8bで絶縁され
ていて、更に接続棒7a。
In this type of electrolytic cell, as shown in Figures 1 to 14, a fluororesin plate is provided on the bottom plate of the electrolytic cell to prevent corrosion of the bottom plate. There are some that are. Furthermore, the connecting rods 7a, 7b connected to the anode 5 or the cathode 6 are insulated from the cover plate 3 by insulating materials 8a, 8b, and the connecting rods 7a.

7bは、例えば、接続棒固定用袋ナラ) 9a、 9b
で蓋板3に間接的に固定されている。
7b is, for example, a connecting rod fixing nut) 9a, 9b
It is indirectly fixed to the cover plate 3.

本発明の隔板の被覆に用いるフッ素系樹脂は、例えば、
ポリテトラフルオロエチレン、ポリクロロトリフルオロ
エチレン、ポリビニリデンフルオライド、ポリビニルフ
ルオライド、テトラフルオロエチレン−ヘキサフルオロ
プロピレン共重合体、テトラフルオロエチレン−エチレ
ン共重合体、テトラフルオロエチレン−パーフルオロア
ルキルビニルエーテル共重合体、クロロトリフルオロエ
チレン−エチレン共重合体等通常公知のものが何れも好
適に使用可能である。
The fluororesin used for coating the partition plate of the present invention is, for example,
Polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinylidene fluoride, polyvinyl fluoride, tetrafluoroethylene-hexafluoropropylene copolymer, tetrafluoroethylene-ethylene copolymer, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer Any of the commonly known polymers such as chlorotrifluoroethylene-ethylene copolymer and chlorotrifluoroethylene-ethylene copolymer can be suitably used.

(作用及び発明の効果) 以上、詳細に説明したように、本発明の電解槽は、隔板
の少なくともその片面がフッ素系樹脂被膜で覆われてい
るので、従来問題であった隔板の複極化を完全に防止す
ることが出来、これによって溶融塩電解の際の陽極から
発生するNF3ガスやF2ガス中にH2の混入を完全に
防止することが可能となった。勿論これによって爆発の
問題も完全に解消できるので、溶融塩溶解によるNFI
やF2の工業的製造が可能となり、その経済的効果は極
めて大である。また、隔板の両面をフッ素系樹脂被膜で
覆うことで隔板の腐蝕も完全に防止出来る点も大いに評
価される。
(Function and Effects of the Invention) As explained above in detail, in the electrolytic cell of the present invention, at least one side of the partition plate is covered with a fluororesin coating, so Polarization can be completely prevented, and as a result, it has become possible to completely prevent H2 from being mixed into the NF3 gas and F2 gas generated from the anode during molten salt electrolysis. Of course, this completely eliminates the problem of explosions, so NFI caused by molten salt dissolution
It has become possible to industrially manufacture F2 and F2, and the economic effect is extremely large. Also, the fact that corrosion of the partition plate can be completely prevented by covering both sides of the partition plate with a fluororesin coating is highly praised.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図、第3図、第5図は隔板が平板上である場合の、
第7図は隔板が陽極を取り巻く形状である場合の、第9
図は隔板が陰極を取り巻く形状である場合の、第11図
は隔板が陽極を取り巻く形状でありかつ電解槽本体が陰
極である場合の、第13図は蓋板の中央部が下方にU字
形に折曲っていて該折曲り部が隔板の役割を果たす形状
の場合の、夫々の電解槽の縦断面図であり、第2図は第
1図の、第4図は第3図の、第6図は第5図の、第8図
は第7図の、第10図は第9図の、第12図は第11図
の、第14図は第13図の、A −A”矢視図を示す。 図において、 1−m−電解槽本体、2−m−フッ素系樹脂板、3−−
一 蓋板、    4−−一電解浴、5−m−陽極、 
   6−−−陰極、?a、7b−−− 接続棒、8a
、8b−−一絶縁材、9a、9b−−一 接続棒固定用
袋ナツト、10−m−隔板、  11−一−フッ素系樹
脂被膜、12−−一陽極発生ガス出口管、 13−m−陰極発生ガス出口管、 14−−−バッキング、15−−−ボルトナツト、を示
す。
Figures 1, 3, and 5 show the case where the diaphragm is on a flat plate.
Figure 7 shows the ninth case where the diaphragm is shaped to surround the anode.
Figure 11 shows the case where the partition plate is shaped to surround the cathode, Figure 11 shows the case where the partition plate is shaped to surround the anode and the electrolytic cell body is the cathode, and Figure 13 shows the case where the center part of the lid plate is downward. FIG. 2 is a longitudinal cross-sectional view of each electrolytic cell in a U-shaped case where the bent portion serves as a partition plate, and FIG. 2 is the same as FIG. 1, and FIG. 4 is the same as FIG. , Fig. 6 is Fig. 5, Fig. 8 is Fig. 7, Fig. 10 is Fig. 9, Fig. 12 is Fig. 11, Fig. 14 is Fig. 13, A-A. "The arrow view is shown. In the figure, 1-m-electrolytic cell main body, 2-m-fluorine resin plate, 3--
1-cover plate, 4--electrolytic bath, 5-m-anode,
6---Cathode, ? a, 7b--- Connection rod, 8a
, 8b--1 insulation material, 9a, 9b--1 connection rod fixing cap nut, 10-m-diaphragm, 11-1-fluorine resin coating, 12--1 anode generated gas outlet pipe, 13-m -Cathode generated gas outlet pipe, 14--backing, 15--bolt nuts are shown.

Claims (1)

【特許請求の範囲】 1)陽極から発生するガスと陰極から発生するガスを隔
離するための隔板の少なくともその片面がフッ素系樹脂
被膜で覆われてなることを特徴とする改良された電解槽
。 2)隔板の両面がフッ素系樹脂被膜で覆われてなる特許
請求の範囲第1項記載の改良された電解槽。
[Claims] 1) An improved electrolytic cell characterized in that at least one side of a partition plate for separating gas generated from the anode and gas generated from the cathode is covered with a fluororesin coating. . 2) The improved electrolytic cell according to claim 1, wherein both sides of the partition plate are covered with a fluororesin coating.
JP61276794A 1986-11-21 1986-11-21 Improved electrolyzer Expired - Lifetime JPH0757914B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61276794A JPH0757914B2 (en) 1986-11-21 1986-11-21 Improved electrolyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61276794A JPH0757914B2 (en) 1986-11-21 1986-11-21 Improved electrolyzer

Publications (2)

Publication Number Publication Date
JPS63130789A true JPS63130789A (en) 1988-06-02
JPH0757914B2 JPH0757914B2 (en) 1995-06-21

Family

ID=17574467

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61276794A Expired - Lifetime JPH0757914B2 (en) 1986-11-21 1986-11-21 Improved electrolyzer

Country Status (1)

Country Link
JP (1) JPH0757914B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001077412A1 (en) 2000-04-07 2001-10-18 Toyo Tanso Co., Ltd. Apparatus for generating fluorine gas

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5436152A (en) * 1977-08-26 1979-03-16 Nec Corp Clock synchronization circuit between central processors
JPS58100688A (en) * 1981-12-11 1983-06-15 Asahi Glass Co Ltd Electrolytic cell for generating fluorine
JPS60155502A (en) * 1983-12-22 1985-08-15 アライド・コーポレーシヨン Fluorine electrolytic manufacture and novel electrolytic cell

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5436152A (en) * 1977-08-26 1979-03-16 Nec Corp Clock synchronization circuit between central processors
JPS58100688A (en) * 1981-12-11 1983-06-15 Asahi Glass Co Ltd Electrolytic cell for generating fluorine
JPS60155502A (en) * 1983-12-22 1985-08-15 アライド・コーポレーシヨン Fluorine electrolytic manufacture and novel electrolytic cell

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001077412A1 (en) 2000-04-07 2001-10-18 Toyo Tanso Co., Ltd. Apparatus for generating fluorine gas
US6818105B2 (en) 2000-04-07 2004-11-16 Toyo Tanso Co., Ltd. Apparatus for generating fluorine gas

Also Published As

Publication number Publication date
JPH0757914B2 (en) 1995-06-21

Similar Documents

Publication Publication Date Title
US4086155A (en) Electrolyzer with released gas
US5085752A (en) Electrolytic cell
JPS5831090A (en) Electrochemical electrolytic cell and method of carrying out electrochemical reaction
GB1354314A (en) Electrolytic cell
GB1405609A (en) Electrolytic diaphragm cells
JPS63130789A (en) Improved electrolytic cell
GB678807A (en) Process for the production of titanium metal
US3146179A (en) Process for the electrolytic production of fluorine and apparatus therefor
JPS63130790A (en) Improved electrolytic cell
GB861978A (en) Improvements in or relating to a process for the electrolytic production of fluorineand apparatus therefor
US3884781A (en) Processes for the electrolysis of alkali halides employing dismantleable bipolar electrodes
FI56557C (en) DIAFRAGMACELL MED ETT FLERTAL AVDELNINGAR FOER FRAMSTAELLNING AV KLOR OCH ALKALIMETALLHYDROXID
JPH01152288A (en) Electrolytic cell and production thereof
US2534638A (en) Electrolytic production of fluorine
US4028208A (en) Electrolyte cell with vertical electrodes
US4424106A (en) Electrolytic filter press cell for producing a mixture of hydrogen and oxygen
US4051008A (en) Flanged connection means for anode posts in electrolytic diaphragm cells
US2624703A (en) Electrolytic fluorine cell
JP2006336035A (en) Electrolysis tank and method for producing nitrogen trifluoride by using the same
JPH0688267A (en) Electrolytic bath
KR102615096B1 (en) Electrolyzer for producing nitrogen trifluoride gas and its partition wall
US4045322A (en) Connection means for anode posts in diaphragm cells
GB1235907A (en) Improvements in electrodes for electrolytic reduction cells
JPH03140488A (en) Electrolyzer
US3925886A (en) Novel cathode fingers

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term