JPH01255682A - Method for detecting breakage of ion exchange membrane - Google Patents
Method for detecting breakage of ion exchange membraneInfo
- Publication number
- JPH01255682A JPH01255682A JP8390488A JP8390488A JPH01255682A JP H01255682 A JPH01255682 A JP H01255682A JP 8390488 A JP8390488 A JP 8390488A JP 8390488 A JP8390488 A JP 8390488A JP H01255682 A JPH01255682 A JP H01255682A
- Authority
- JP
- Japan
- Prior art keywords
- exchange membrane
- ion exchange
- pressure
- chamber
- electrolytic cell
- 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
- 239000003014 ion exchange membrane Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims description 11
- 230000006378 damage Effects 0.000 claims description 18
- 238000005868 electrolysis reaction Methods 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005341 cation exchange Methods 0.000 claims description 3
- 150000004820 halides Chemical class 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 9
- 230000005856 abnormality Effects 0.000 abstract description 5
- 238000009530 blood pressure measurement Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000006837 decompression Effects 0.000 abstract 2
- 239000000243 solution Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000003513 alkali Substances 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 206010011224 Cough Diseases 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- ABDBNWQRPYOPDF-UHFFFAOYSA-N carbonofluoridic acid Chemical compound OC(F)=O ABDBNWQRPYOPDF-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 description 1
- -1 halide ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、イオン交換膜電解槽に装着された・イオン交
換膜の破損検出方法に関する０、更に詳しくは、イオン
交換膜電解槽の組立時または操業時におけるイオン交換
膜のピンホール等異常の発生を、電解槽に装着したまま
簡便、且つ、安全に検出するイオン交換膜の破損検出方
法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for detecting damage to an ion exchange membrane installed in an ion exchange membrane electrolytic cell, and more specifically, to a method for detecting damage to an ion exchange membrane installed in an ion exchange membrane electrolytic cell. Alternatively, the present invention relates to a method for detecting damage to an ion exchange membrane that easily and safely detects the occurrence of abnormalities such as pinholes in the ion exchange membrane during operation while the membrane is attached to an electrolytic cell.
〔従来の技術］
従来からハロゲン化アルカリ水溶液の電解法としては、
水銀法電解で得られる水酸化アルカリ溶液の純度が極め
て良好なことから、水銀法電解が主流であつたが、近年
起こった環境上の問題から、水銀法電解は隔膜電解法ま
たはイオン交換膜電解法に変更され始めた。中でも高純
度の水酸化アルカリ溶液が得られるという観点から、イ
オン交換膜電解法が主流となりつつあり、更にエネルギ
ー節減可能ということから、隔膜電解法からもイオン交
換膜電解法に転換されている。[Conventional technology] Conventionally, electrolysis methods for aqueous halogenated alkali solutions include:
Mercury electrolysis has been the mainstream because the purity of the alkaline hydroxide solution obtained by mercury electrolysis is extremely good, but due to environmental problems that have arisen in recent years, mercury electrolysis has been replaced by diaphragm electrolysis or ion exchange membrane electrolysis. The law began to change. Among them, the ion-exchange membrane electrolysis method is becoming mainstream from the viewpoint of obtaining a high-purity alkaline hydroxide solution, and the diaphragm electrolysis method is also being replaced by the ion-exchange membrane electrolysis method because it can save energy.
ところでイオン交換膜電解法に用いられるイオン交換膜
電解槽には、隔膜として耐薬品性、機械的強度に優れた
パーフルオロエチレンをベースとした、パーフルオロカ
ルボン酸型及びパーフルオロスルホン酸型の陽イオン交
換膜が使用される。By the way, the ion exchange membrane electrolyzer used in the ion exchange membrane electrolysis method uses perfluorocarboxylic acid type and perfluorosulfonic acid type cations based on perfluoroethylene, which has excellent chemical resistance and mechanical strength, as a diaphragm. An ion exchange membrane is used.
イオン交換膜を電解槽に組み込む際、咳膜に物理的ダメ
ージを与えないよう細心の注意が払われるが、過度の荷
重がかかったり、折れ曲がったり電極端部の切断部と接
触することによって、亀裂やピンホール等が発生する場
合がある。When installing an ion exchange membrane into an electrolytic cell, great care is taken to avoid physical damage to the cough membrane, but cracks may occur due to excessive load, bending, or contact with the cut end of the electrode. or pinholes may occur.
イオン交換膜が破損している状態で電解槽の操業、特に
食塩電解を行うと、陰陽両極室間に液漏れを生じて製品
の純度を損なうとともに、電流効率の低下を引き起こす
。If an electrolytic cell, especially salt electrolysis, is operated with a damaged ion exchange membrane, liquid leakage will occur between the negative and positive electrode chambers, impairing the purity of the product and causing a decrease in current efficiency.
また長時間の操業により、膜の抵抗が次第に太き（なり
電解摺電圧が上昇し、更には陽極側の塩素ガスと、陰極
側の水素ガスが混合して爆鳴気を形成し、何らかの着火
源により重大事故を招く等積々の弊害をもたらしている
。In addition, due to long-term operation, the resistance of the membrane gradually increases (as a result, the electrolytic sliding voltage increases, and furthermore, the chlorine gas on the anode side and the hydrogen gas on the cathode side mix to form explosive gas, causing some kind of deposition. The source of the fire has caused a lot of harm, including serious accidents.
このような問題に対し特開昭６１−１１０７８９号公報
にみられるように、陰極室または陽極室のいずれか一方
の極室に気体を供給し、他方の極室における気体の圧力
変化を測定するイオン交換膜の破ｔｊ１検知方法が開示
されている。To solve this problem, as shown in Japanese Patent Application Laid-Open No. 61-110789, gas is supplied to either the cathode chamber or the anode chamber, and the pressure change of the gas in the other electrode chamber is measured. A method for detecting tj1 rupture of an ion exchange membrane is disclosed.
［発明が解決しようとする課題〕
しかしながら、上記破損検知方法は極室に気体を供給し
て圧力を上昇させる方法のため、誤って圧力を高くし過
ぎるとイオン交換膜を破損する恐れがあるという問題が
ある。[Problem to be solved by the invention] However, since the above-mentioned method of detecting damage is a method of increasing the pressure by supplying gas to the electrode chamber, there is a risk of damaging the ion exchange membrane if the pressure is made too high by mistake. There's a problem.
本発明の課題は、イオン交換膜のピンホール等異常の発
生を簡便、且つ、安全に検出する、イオン交換膜の破損
検出方法を提供することにある。An object of the present invention is to provide a method for detecting damage to an ion exchange membrane that easily and safely detects the occurrence of abnormalities such as pinholes in the ion exchange membrane.
（課題を解決するための手段及び作用〕本発明者らは、
上記問題点を解決するため鋭意検討した結果、電解槽に
イオン交換膜を装着した状態で、いずれか一方の極室を
減圧装置を用いて大気圧より低い圧力に減圧し、他方の
極室の圧力を測定することにより本発明の課題が達成さ
れることを見出し、本発明を完成させるに至った。(Means and effects for solving the problem) The present inventors
As a result of intensive studies to solve the above problems, we found that with an ion exchange membrane attached to the electrolytic cell, one of the electrode chambers was depressurized to a pressure lower than atmospheric pressure using a pressure reducing device, and the other electrode chamber was depressurized to a pressure lower than atmospheric pressure. The present inventors have discovered that the objects of the present invention can be achieved by measuring pressure, and have completed the present invention.
即ち、本発明は陰陽両電極間に陽イオン交換膜を配し、
ハロゲン化アルカリ水溶液の電気分解からハロゲンガス
、水酸化アルカリ及び水素ガスを生成するイオン交換膜
電解槽において、陰極室もしくは陽極室のいずれか一方
の極室を減圧状態に保ち、同時に他方の極室の圧力変化
を測定することを特徴とするイオン交換膜の破損検出方
法である。That is, the present invention arranges a cation exchange membrane between both negative and negative electrodes,
In an ion exchange membrane electrolyzer that generates halogen gas, alkali hydroxide, and hydrogen gas from the electrolysis of an aqueous alkali halide solution, either the cathode chamber or the anode chamber is kept in a reduced pressure state, and at the same time the other electrode chamber is kept in a reduced pressure state. This is a method for detecting damage to an ion exchange membrane, which is characterized by measuring pressure changes in the ion exchange membrane.
本発明で極室を減圧状態に保つために真空ポンプまたは
エジェクター等、大気圧より低い圧力に操作可能な減圧
装置を用いる。In the present invention, in order to maintain the electrode chamber in a reduced pressure state, a pressure reducing device such as a vacuum pump or an ejector that can be operated to a pressure lower than atmospheric pressure is used.
本発明は、イオン交換膜電解槽の組立時の破損のみなら
ず、操業中の運転条件変化による、電解槽内の圧力変動
がもたらす膜の破損等に対し、電解槽停止後に用いるこ
とができる。The present invention can be used not only for damage during assembly of an ion exchange membrane electrolytic cell, but also for membrane damage caused by pressure fluctuations within the electrolytic cell due to changes in operating conditions during operation, after the electrolytic cell is stopped.
以下本発明を図面に基づき、更に具体的に説明する。The present invention will be explained in more detail below based on the drawings.
第１図は陽極室と陰極室とをイオン交換膜を介して相対
させた、電解槽の基本構造（ユニットセル）を示す概念
図である。FIG. 1 is a conceptual diagram showing the basic structure (unit cell) of an electrolytic cell in which an anode chamber and a cathode chamber are opposed to each other via an ion exchange membrane.
電解槽１は、イオン交換膜２によって、陽極室３と陰極
室４に区画されている。陽極室３内部には陽極５を配し
、開口ノズル７からハロゲン化アルカリ水溶液が供給さ
れ、電気を流すことによりアルカリ金属イオンは、膜を
透過して陰極へ移動し、ハロゲン化物イオンは陽極酸化
反応により、ハロゲンガスと未反応ハロゲン化アルカリ
水溶液となって、開口ノズル９で気液分離される。−１
陰極室４内部には陰極６を配し、開口ノズル８か・ら、
水または水酸化アルカリ溶液が供給され、陰極反応によ
り水素ガスと水酸化アルカリ溶液となって、開口ノズル
１０で気液分離される。The electrolytic cell 1 is divided into an anode chamber 3 and a cathode chamber 4 by an ion exchange membrane 2. An anode 5 is disposed inside the anode chamber 3, and an alkali halide aqueous solution is supplied from an opening nozzle 7. By passing electricity, alkali metal ions pass through the membrane and move to the cathode, and the halide ions are anodized. As a result of the reaction, the halogen gas and unreacted aqueous halogenated alkali solution are formed, and the aqueous solution is separated into gas and liquid through the opening nozzle 9. -1
A cathode 6 is arranged inside the cathode chamber 4, and from an opening nozzle 8,
Water or an alkaline hydroxide solution is supplied and becomes hydrogen gas and an alkaline hydroxide solution through a cathode reaction, which are separated into gas and liquid by the opening nozzle 10 .
本発明は上記した電解槽を完全に液抜きした中空の状態
とし、いずれか一方の極室を減圧装置を用いて減圧状態
とし、好ましくは約１分間放置後、他方の極室の圧力降
下の有無を確認する。In the present invention, the electrolytic cell described above is completely drained and is in a hollow state, one of the electrode chambers is reduced in pressure using a pressure reducing device, and after being left for about 1 minute, the pressure drop in the other electrode chamber is reduced. Check whether it is present.
圧力降下の確認方法としては、減圧装置を開口ノズル７
．８．９．１０のいずれかに装着し、該装置装着ノズル
の対極室のいずれか一方を圧力測定用ノズルとし、マノ
メーター等の圧力測定機器を装着すると共に、その他の
開口ノズルはゴム栓等で密閉する０次いで減圧装置を作
動して極室内を減圧するが、減圧しすぎると膜破損の原
因となるため、真空度は１０〜５００■Ｈ２０が好まし
く、更に好ましくは５０〜１００閤Ｈ８０である。真空
度が小さすぎる場合は効果が減少する。To check the pressure drop, connect the pressure reducing device to opening nozzle 7.
．． 8.9.10, one of the counter electrode chambers of the nozzle installed in the device is used as a pressure measurement nozzle, and a pressure measurement device such as a manometer is attached, and the other opening nozzles are equipped with rubber plugs, etc. The pressure inside the electrode chamber is reduced by operating a pressure reducing device, but too much pressure may cause membrane damage, so the degree of vacuum is preferably 10 to 500 cm H20, more preferably 50 to 100 cm H80. . If the degree of vacuum is too low, the effectiveness will be reduced.
上記測定に於いてイオン交換膜にピンホール等の破損が
ある場合には、該破損部より圧力が漏洩し、測定側の圧
力が低下する。またイオン交換膜に異常が無い場合には
、圧力変化は見られない。In the above measurement, if the ion exchange membrane has damage such as a pinhole, pressure leaks from the damage and the pressure on the measurement side decreases. Further, if there is no abnormality in the ion exchange membrane, no pressure change will be observed.
次に本発明を食塩電解実用槽で説明する。第２図は該電
解槽を上部からみた概略図である。第３図は第２図のＡ
−Ａ線側部縦断面図を示す。Next, the present invention will be explained using a practical salt electrolysis tank. FIG. 2 is a schematic diagram of the electrolytic cell viewed from above. Figure 3 is A of Figure 2.
-A side longitudinal cross-sectional view is shown.
この型式の電解槽のイオン交換膜２は、成型加工して袋
状で用いられ、その内部に陽極５が装着されている。そ
してイオン交換膜２の両側に陽極室３、陰極室４がそれ
ぞれ位置するように複数個のユニットセルが配置されて
いる。イオン交換膜２は上方が開口しているので、シー
リングプラグ１１で押さえつけてあり、マニホールド１
２によってそれぞれのユニットセルへ、供給塩水を供給
すると共に、生成する塩素ガス、及び未反応塩水を集約
する構造になっている。The ion exchange membrane 2 of this type of electrolytic cell is molded and used in the form of a bag, and the anode 5 is mounted inside the bag. A plurality of unit cells are arranged such that an anode chamber 3 and a cathode chamber 4 are located on both sides of the ion exchange membrane 2, respectively. Since the ion exchange membrane 2 is open at the top, it is pressed down with a sealing plug 11 and the manifold 1
2 supplies supply brine to each unit cell, and has a structure in which generated chlorine gas and unreacted brine are collected.
該電解槽について、本発明の破損検出方法を適用する場
合は、マニホールド１２を取りはずし、陰極液供給開口
ノズル８に減圧装置を装着し、陽極液供給開口ノズル９
の一方にマノメーターを据え付けた後、その他の開口ノ
ズルは全てゴム栓、またはテープ等で密閉し、減圧装置
で圧力を真空度１０〜５００ＩＩＩＩＩＨ！Ｏに保ちな
がら、順次マノメーターをシーリングプラグ１１に位置
する陽極液供給開口ノズル９に差し込んでいき、陽極室
５の圧力が陰極室４の方へリークしているかどうか検出
する。When applying the damage detection method of the present invention to the electrolytic cell, the manifold 12 is removed, a pressure reducing device is attached to the catholyte supply opening nozzle 8, and the anolyte supply opening nozzle 9 is installed.
After installing the manometer on one side, seal all other open nozzles with rubber plugs or tape, and reduce the pressure to a vacuum level of 10 to 500IIIH using a pressure reducing device. While maintaining the pressure at 0, a manometer is sequentially inserted into the anolyte supply opening nozzle 9 located in the sealing plug 11 to detect whether the pressure in the anode chamber 5 is leaking toward the cathode chamber 4.
上記の様にしてイオン交換膜の破損検出を行えば、個々
のイオン交換膜の破損調査が可能であり仮にピンホール
等の破損が発見された場合、そのユニットセルに装着さ
れたイオン交換膜のみ取替えを実施すれば良く、電解槽
を解体する手間を省くことができる。By detecting damage to ion exchange membranes as described above, it is possible to investigate damage to individual ion exchange membranes, and if damage such as pinholes is discovered, only the ion exchange membrane attached to that unit cell can be investigated. All you have to do is replace it, and the trouble of disassembling the electrolytic cell can be saved.
本発明のイオン交換膜電解槽は、陽イオン交換膜を有す
る電解槽の総称であり、アスベスト隔膜電解槽を改造し
たイオン交換膜電解槽（以下ＤＩ槽と称す）及びフィル
タープレス電解槽等にも適用できる。The ion exchange membrane electrolytic cell of the present invention is a general term for electrolytic cells having a cation exchange membrane, and can also be used as an ion exchange membrane electrolytic cell (hereinafter referred to as DI cell) which is a modified asbestos diaphragm electrolytic cell, a filter press electrolytic cell, etc. Applicable.
以下本発明を実施例により説明する。 The present invention will be explained below with reference to Examples.
実施例−１
ＤＩ槽にイオン交換膜を組み込んだ後、陽極液供給開口
ノズルのひとつにマノメーターを据え付け、さらに陰極
液供給開口ノズルに減圧ポンプを設置し、その他の開口
ノズルは全てゴム栓を打って密閉状態とした。Example 1 After installing an ion exchange membrane in the DI tank, a manometer was installed on one of the anolyte supply opening nozzles, a vacuum pump was installed on the catholyte supply opening nozzle, and all other opening nozzles were fitted with rubber plugs. It was sealed tightly.
減圧ポンプで真空度１００ｍｍＨｚＯにて陰極室内を減
圧状態とし、２３枚のイオン交換膜について順次リーク
テストをした結果、１枚のイオン交換膜に付随するユニ
ットセルの圧力が低下した。The inside of the cathode chamber was depressurized at a vacuum level of 100 mmHzO using a vacuum pump, and a leak test was conducted on 23 ion exchange membranes in sequence. As a result, the pressure in the unit cell attached to one ion exchange membrane decreased.
このイオン交換膜のみ取り外して調査したところ、イオ
ン交換膜の下部左端にピンホールが確認された。When only this ion exchange membrane was removed and investigated, a pinhole was confirmed at the lower left end of the ion exchange membrane.
実施例−２
ＤＩ槽運転中、水酸化ナトリウム水溶液中の塩分濃度が
４２８ｐｐｍとなり、また電摺電圧も３．６２Ｖと上昇
したため、直ちに電解槽の運転を停止し、完全に液抜き
を行った後、実施例−１と同様の操作を実施した。その
結果、２個のユニットセルの圧力低下が認められたため
、その部位のイオン交換膜を取り替えた後、再度電解槽
の運転を開始した。再運転後の水酸化ナトリウム水溶液
中の塩分濃度は３２ｐｐｍ 、電摺電圧は３．４６Ｖと
、良好な状態１になった。Example 2 During operation of the DI tank, the salt concentration in the sodium hydroxide aqueous solution reached 428 ppm, and the electric voltage increased to 3.62V, so the operation of the electrolytic tank was immediately stopped and the liquid was completely drained. , the same operation as in Example-1 was carried out. As a result, a pressure drop in two unit cells was observed, so after replacing the ion exchange membrane at that location, operation of the electrolytic cell was restarted. After restarting the operation, the salt concentration in the sodium hydroxide aqueous solution was 32 ppm, and the electric voltage was 3.46 V, which was a good condition 1.
本発明の方法によれば、電解槽を解体することなく、イ
オン交換膜電解槽の組立時または操業時におけるイオン
交換膜のピンホール等の異常を簡便に、且つ、安全に検
出できるという効果があり、産業上に貢献すること大で
ある。According to the method of the present invention, it is possible to easily and safely detect abnormalities such as pinholes in the ion exchange membrane during assembly or operation of the ion exchange membrane electrolytic cell without disassembling the electrolytic cell. Therefore, it will greatly contribute to industry.
第１図は電解槽の基本構造を示す概念口、第２図はＤＩ
槽を上部から見た概略図、第３図は第２図のＡ−Ａ線側
部縦断面図である。
図中、１は電解槽、２はイオン交換膜、３は陽極室、４
は陰極室、５は陽極、６は陰極、７は陽極液入口開口ノ
ズル、８は陰極液入口開口ノズル、９は陽極液気液分離
開口ノズル、１０は陰極液気液分離開口ノズル、１１は
シーリングプラグ、１２はマニホールドである。
特許出願人 三井東圧化学株式会社
第１図
第２図Figure 1 is a conceptual diagram showing the basic structure of an electrolytic cell, Figure 2 is a DI
A schematic view of the tank viewed from above, and FIG. 3 is a side longitudinal sectional view taken along the line A--A in FIG. 2. In the figure, 1 is an electrolytic cell, 2 is an ion exchange membrane, 3 is an anode chamber, and 4
is a cathode chamber, 5 is an anode, 6 is a cathode, 7 is an anolyte inlet opening nozzle, 8 is a catholyte inlet opening nozzle, 9 is an anolyte liquid gas-liquid separation opening nozzle, 10 is a cathode liquid vapor-liquid separation opening nozzle, 11 is The sealing plug 12 is a manifold. Patent applicant Mitsui Toatsu Chemical Co., Ltd. Figure 1 Figure 2
Claims (1)
アルカリ水溶液の電気分解からハロゲンガス、水酸化ア
ルカリ及び水素ガスを生成するイオン交換膜電解槽にお
いて、陰極室もしくは陽極室のいずれか一方の極室を減
圧状態に保ち、同時に他方の極室の圧力変化を測定する
ことを特徴とするイオン交換膜の破損検出方法。1 In an ion exchange membrane electrolytic cell in which a cation exchange membrane is arranged between both negative and positive electrodes and halogen gas, alkali hydroxide, and hydrogen gas are generated from electrolysis of an aqueous halide solution, either the cathode chamber or the anode chamber A method for detecting damage to an ion exchange membrane, characterized by maintaining one electrode chamber in a reduced pressure state and simultaneously measuring pressure changes in the other electrode chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8390488A JPH01255682A (en) | 1988-04-05 | 1988-04-05 | Method for detecting breakage of ion exchange membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8390488A JPH01255682A (en) | 1988-04-05 | 1988-04-05 | Method for detecting breakage of ion exchange membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01255682A true JPH01255682A (en) | 1989-10-12 |
Family
ID=13815611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8390488A Pending JPH01255682A (en) | 1988-04-05 | 1988-04-05 | Method for detecting breakage of ion exchange membrane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01255682A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6027630A (en) * | 1997-04-04 | 2000-02-22 | University Of Southern California | Method for electrochemical fabrication |
| US9614266B2 (en) | 2001-12-03 | 2017-04-04 | Microfabrica Inc. | Miniature RF and microwave components and methods for fabricating such components |
| US9620834B2 (en) | 2001-12-03 | 2017-04-11 | Microfabrica Inc. | Method for fabricating miniature structures or devices such as RF and microwave components |
| US10297421B1 (en) | 2003-05-07 | 2019-05-21 | Microfabrica Inc. | Plasma etching of dielectric sacrificial material from reentrant multi-layer metal structures |
| JP2023089662A (en) * | 2021-12-16 | 2023-06-28 | トヨタ自動車株式会社 | Leakage detection method of water electrolysis apparatus, hydrogen production method, leakage detection program of water electrolysis apparatus, and water electrolysis apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5125482A (en) * | 1974-08-28 | 1976-03-02 | Hitachi Ltd | |
| JPS5376997A (en) * | 1976-12-20 | 1978-07-07 | Kanegafuchi Chem Ind Co Ltd | Sodium chlorde electrolyzing method using three chamber type ion exhange membrane cell |
| JPS608309A (en) * | 1983-06-29 | 1985-01-17 | Toyo Soda Mfg Co Ltd | Nitrogen-containing fluorocarbon polymer and its production |
| JPS61110789A (en) * | 1984-11-05 | 1986-05-29 | Tokuyama Soda Co Ltd | Method for detecting damage of ion exchange membrane |
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1988
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5125482A (en) * | 1974-08-28 | 1976-03-02 | Hitachi Ltd | |
| JPS5376997A (en) * | 1976-12-20 | 1978-07-07 | Kanegafuchi Chem Ind Co Ltd | Sodium chlorde electrolyzing method using three chamber type ion exhange membrane cell |
| JPS608309A (en) * | 1983-06-29 | 1985-01-17 | Toyo Soda Mfg Co Ltd | Nitrogen-containing fluorocarbon polymer and its production |
| JPS61110789A (en) * | 1984-11-05 | 1986-05-29 | Tokuyama Soda Co Ltd | Method for detecting damage of ion exchange membrane |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8603316B2 (en) | 1997-04-04 | 2013-12-10 | University Of Southern California | Method for electrochemical fabrication |
| US6475369B1 (en) | 1997-04-04 | 2002-11-05 | University Of Southern California | Method for electrochemical fabrication |
| US6572742B1 (en) | 1997-04-04 | 2003-06-03 | University Of Southern California | Apparatus for electrochemical fabrication using a conformable mask |
| US7351321B2 (en) | 1997-04-04 | 2008-04-01 | Microfabrica, Inc. | Method for electrochemical fabrication |
| US7998331B2 (en) | 1997-04-04 | 2011-08-16 | University Of Southern California | Method for electrochemical fabrication |
| US8551315B2 (en) | 1997-04-04 | 2013-10-08 | University Of Southern California | Method for electromechanical fabrication |
| US6027630A (en) * | 1997-04-04 | 2000-02-22 | University Of Southern California | Method for electrochemical fabrication |
| US9752247B2 (en) | 1997-04-04 | 2017-09-05 | University Of Southern California | Multi-layer encapsulated structures |
| US9614266B2 (en) | 2001-12-03 | 2017-04-04 | Microfabrica Inc. | Miniature RF and microwave components and methods for fabricating such components |
| US9620834B2 (en) | 2001-12-03 | 2017-04-11 | Microfabrica Inc. | Method for fabricating miniature structures or devices such as RF and microwave components |
| US11145947B2 (en) | 2001-12-03 | 2021-10-12 | Microfabrica Inc. | Miniature RF and microwave components and methods for fabricating such components |
| US10297421B1 (en) | 2003-05-07 | 2019-05-21 | Microfabrica Inc. | Plasma etching of dielectric sacrificial material from reentrant multi-layer metal structures |
| JP2023089662A (en) * | 2021-12-16 | 2023-06-28 | トヨタ自動車株式会社 | Leakage detection method of water electrolysis apparatus, hydrogen production method, leakage detection program of water electrolysis apparatus, and water electrolysis apparatus |
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