JPH0244764B2 - DENKIKAGAKUTEKISANSOBUNRISOCHINOSADOHOHO - Google Patents
DENKIKAGAKUTEKISANSOBUNRISOCHINOSADOHOHOInfo
- Publication number
- JPH0244764B2 JPH0244764B2 JP18800183A JP18800183A JPH0244764B2 JP H0244764 B2 JPH0244764 B2 JP H0244764B2 JP 18800183 A JP18800183 A JP 18800183A JP 18800183 A JP18800183 A JP 18800183A JP H0244764 B2 JPH0244764 B2 JP H0244764B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- cathode
- anode
- chamber
- oxygen
- 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
Landscapes
- Oxygen, Ozone, And Oxides In General (AREA)
Description
【発明の詳細な説明】
本発明は、イオン交換樹脂膜を電解質とする電
気化学的酸素分離装置の作動方法に関するもので
あり、その目的とするところは、電気化学的酸素
分離装置に用いられる水の有効利用を図るととも
に、陰極の安定作動を図らんとするにある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of operating an electrochemical oxygen separator using an ion exchange resin membrane as an electrolyte, and its purpose is to reduce the amount of water used in the electrochemical oxygen separator. The aim is to make effective use of the cathode and ensure stable operation of the cathode.
空気などの酸素を含む混合ガスから酸素を分離
するための電気化学的酸素分離装置は、例えば特
公昭43−25001号あるいは特公昭55−25343号に記
載されていて公知である。 An electrochemical oxygen separation device for separating oxygen from a mixed gas containing oxygen such as air is known and is described in, for example, Japanese Patent Publication No. 43-25001 or Japanese Patent Publication No. 55-25343.
すなわち、電気化学的酸素分離装置は、酸素の
電解還元に有効なガス拡散電極からなる陰極と酸
素発生電極からなる陽極と電解液もしくは固体電
解質とから構成される。電解液としては水酸化ア
ルカリ水溶液あるいは酸性水溶液が用いられ、固
体電解質としては、イオン交換樹脂膜、ヘテロポ
リ酸、セリウム酸、ストロンチウムなどが用いら
れ得る。 That is, an electrochemical oxygen separation device is composed of a cathode consisting of a gas diffusion electrode effective for electrolytic reduction of oxygen, an anode consisting of an oxygen generating electrode, and an electrolytic solution or solid electrolyte. As the electrolyte, an alkali hydroxide aqueous solution or an acidic aqueous solution can be used, and as the solid electrolyte, an ion exchange resin membrane, a heteropolyacid, ceric acid, strontium, etc. can be used.
本発明はイオン交換樹脂膜、殊に水素イオン伝
導性のカチオン交換樹脂膜を電解質とする電気化
学的酸素分離装置に関するものである。 The present invention relates to an electrochemical oxygen separation device using an ion exchange resin membrane, particularly a hydrogen ion conductive cation exchange resin membrane, as an electrolyte.
カチオン交換樹脂膜を電解質とする電気化学的
酸素分離装置においては、陰極と陽極とはそれぞ
れカチオン交換膜に一体に接合され、陽極側から
水が供給され、カチオン交換膜が水に浸潤され
て、水素イオン伝導性をもつようになつている。
このタイプの電気化学的酸素分離装置において
は、陰極に酸素を含む混合ガスを供給しながら、
陰・陽両極間に直流電流を通電すると、次の反応
が起る。 In an electrochemical oxygen separation device using a cation exchange resin membrane as an electrolyte, the cathode and anode are each integrally joined to the cation exchange membrane, water is supplied from the anode side, and the cation exchange membrane is soaked with water. It has become conductive to hydrogen ions.
In this type of electrochemical oxygen separation device, while supplying a mixed gas containing oxygen to the cathode,
When direct current is passed between the negative and positive poles, the following reaction occurs.
陰極：O2＋4H+＋4e-→2H2O
陽極：2H2O→4H+＋O2＋4e-
全反応は陰極側から陽極側へ酸素が、陽極側か
ら陰極へ水が移行するという反応になる。Cathode: O 2 +4H + +4e - →2H 2 O Anode: 2H 2 O→4H + +O 2 +4e -The total reaction is that oxygen moves from the cathode side to the anode side, and water moves from the anode side to the cathode side.
カチオン交換膜を電解質とする電気化学的酸素
分離装置においては、一般に陰極の背面に陰極ガ
ス室が、陽極の背面に陽極水室が付設されてい
る。したがつて酸素分離反応が進むと、陽極水室
の水が不足し、陰極ガス室に水が溜まる。このよ
うな事態になると、カチオン交換膜の陽極に近い
部分での水素イオンの伝導性が低下するととも
に、陰極への酸素の拡散が妨害されるので、電気
化学的酸素分離装置が首尾よく機能しなくなる。 In an electrochemical oxygen separation device using a cation exchange membrane as an electrolyte, a cathode gas chamber is generally attached to the back of the cathode, and an anode water chamber is attached to the back of the anode. Therefore, as the oxygen separation reaction progresses, water in the anode water chamber becomes insufficient and water accumulates in the cathode gas chamber. When this happens, the hydrogen ion conductivity of the cation exchange membrane near the anode is reduced and oxygen diffusion to the cathode is impeded, making it difficult for the electrochemical oxygen separation device to function successfully. It disappears.
本発明は、かかる問題を解決せんとするもので
あり、電気化学的酸素分離装置の作動によつて陰
極ガス室に溜まる水を再び陽極水室に戻すように
するものである。すなわち、かかる方法を採用す
ると、本来、陽極側から陰極側に移行するだけで
あつて消耗するわけではない水の有効利用を図る
ことができるし、陰極での酸素の拡散の妨害を回
避することが可能となる。 The present invention aims to solve this problem by returning the water accumulated in the cathode gas chamber to the anode water chamber through the operation of the electrochemical oxygen separation device. In other words, by adopting such a method, it is possible to effectively utilize water that originally only migrates from the anode side to the cathode side and is not consumed, and to avoid interference with oxygen diffusion at the cathode. becomes possible.
陰極ガス室に溜まる水は、直接陽極水室へ戻し
てもよいし、水タンクを別途に用意し、この水タ
ンクに一旦戻し、この水タンクから水を陽極水室
に供給するようにしてもよい。なお、陰極ガス室
の一部もしくは、陰極で脱酸素された残余ガスの
出口部分に水の貯溜室を設けておき、この水の貯
溜室に水が溜まつたとしても、この水が直接陰極
に接触しないようにすれば、陰極ガス室の水を陽
極水室もしくは水タンクに戻すという操作を間歇
的にすればよいので、一層効果的である。 The water accumulated in the cathode gas chamber may be returned directly to the anode water chamber, or a separate water tank may be prepared, the water may be returned to this water tank, and the water may be supplied from this water tank to the anode water chamber. good. In addition, a water storage chamber is provided in a part of the cathode gas chamber or at the outlet of the residual gas deoxidized at the cathode, so that even if water accumulates in this water storage chamber, this water will directly flow to the cathode. This is even more effective if the water in the cathode gas chamber is returned to the anode water chamber or water tank only intermittently.
以下、本発明の一実施例について詳述する。 An embodiment of the present invention will be described in detail below.
実施例：
第１図は、電気化学的酸素分離装置の断面構造
を示す。電気化学的酸素分離装置本体１は、パー
フロロカーボンにスルフオン酸基を導入したイオ
ン交換樹脂膜２、白金ブラツク粉末とスチレン−
ジビニルベンゼンにスルフオン酸基を導入してな
るイオン交換樹脂粉末と結着剤としてのポリテト
ラフルオロエチレンとの混合物層からなるガス拡
散電極としての陰極３、酸化イリジウムとポリテ
トラフルオロエチレンとの混合物層からなる酸素
発生電極としての陽極４、白メツキしたエキスパ
ンドチタンからなる陰極集電体５、白金メツキし
たエキスパンドチタンからなる陽極集電体６、陰
極集電体５の間〓に形成される陰極ガス室７、陽
極集電体６の間〓に形成される陽極水室８、チタ
ン板からなる陰極端子板９、チタン板からなる陽
極端子板１０、セルフレーム１１、酸素を含む混
合ガス入口１２および酸素導出口１３から形成さ
れる。陰極３および陽極４は、イオン交換樹脂膜
２に一体に接合されている。Example: FIG. 1 shows a cross-sectional structure of an electrochemical oxygen separation device. The electrochemical oxygen separator body 1 consists of an ion exchange resin membrane 2 in which sulfonic acid groups are introduced into perfluorocarbon, platinum black powder, and styrene.
A cathode 3 as a gas diffusion electrode consisting of a mixture layer of ion exchange resin powder obtained by introducing sulfonic acid groups into divinylbenzene and polytetrafluoroethylene as a binder, and a mixture layer of iridium oxide and polytetrafluoroethylene. An anode 4 as an oxygen generating electrode consisting of a cathode current collector 5 made of white-plated expanded titanium, an anode current collector 6 made of platinized expanded titanium, and a cathode gas formed between the cathode current collector 5. An anode water chamber 8 formed between the chamber 7 and the anode current collector 6, a cathode terminal plate 9 made of a titanium plate, an anode terminal plate 10 made of a titanium plate, a cell frame 11, a mixed gas inlet 12 containing oxygen, and It is formed from the oxygen outlet 13. The cathode 3 and the anode 4 are integrally joined to the ion exchange resin membrane 2.
水タンク１４から水を陽極水室８に供給し、酸
素を含む混合ガスを酸素を含む混合ガス入口１２
から供給し、陰極端子板９と陽極端子板１０との
間に直流電流を通電すると、陰極３で脱酸素反応
が起り、脱酸素された残余ガスは貯水室１５を経
て、残余ガス導出口１６から導出されると同時に
陰極３で生成する水および水素イオンの陽極４側
から陰極３側への移動に随体して移行する水が貯
水室１５に溜められる。一方、陽極４では酸素発
生反応が起り、酸素は気泡状になつて陽極水室８
内の水をくぐり抜けて、酸素導出口１３から導出
される。 Water is supplied from the water tank 14 to the anode water chamber 8, and a mixed gas containing oxygen is supplied to the mixed gas inlet 12 containing oxygen.
When a direct current is supplied between the cathode terminal plate 9 and the anode terminal plate 10, a deoxidation reaction occurs at the cathode 3, and the deoxygenated residual gas passes through the water storage chamber 15 and flows through the residual gas outlet 16. The water generated at the cathode 3 and the water that migrates as the hydrogen ions move from the anode 4 side to the cathode 3 side are stored in the water storage chamber 15. On the other hand, an oxygen generation reaction occurs at the anode 4, and the oxygen becomes bubbles and becomes the anode water chamber 8.
The oxygen passes through the water inside and is led out from the oxygen outlet 13.
貯水室１５に溜められた水は、ポンプ１７によ
つて水タンク１４に戻され、再び利用される。 The water stored in the water storage chamber 15 is returned to the water tank 14 by the pump 17 and used again.
かかる方法を採用すると、本来、消耗するわけ
ではない水の有効利用を図ることが可能となる。
さらにまた、貯水室１５が用意されなければ、陰
極ガス室７内に水が溜まり酸素の陰極３への拡散
を妨害するのに対し、上述の構成の採用によつ
て、陰極ガス室７内での水の滞溜が回避される。 By adopting such a method, it becomes possible to effectively utilize water, which is not normally consumed.
Furthermore, if the water storage chamber 15 is not provided, water would accumulate in the cathode gas chamber 7 and obstruct the diffusion of oxygen to the cathode 3. stagnation of water is avoided.
以上、詳述せる如く、本発明は、特にイオン交
換樹脂膜を電解質とする電気化学的酸素分離装置
を効果的に作動し得る方法を提供するもので、そ
の工業的価値、極めて大である。 As detailed above, the present invention particularly provides a method for effectively operating an electrochemical oxygen separation device using an ion exchange resin membrane as an electrolyte, and has extremely great industrial value.
第１図は、電気化学的酸素分離装置の断面構造
を示す。
１……電気化学的酸素分離装置本体、２……イ
オン交換樹脂膜、３……陰極、４……陽極、５…
…陰極集電体、６……陽極集電体、７……陰極ガ
ス室、８……陽極水室、９……陰極端子板、１０
……陽極端子板、１１……セルフレーム、１２…
…酸素を含む混合ガス入口、１３……酸素導出
口、１４……水タンク、１５……貯水室、１６…
…残余ガス導出口、１７……ポンプ。
FIG. 1 shows a cross-sectional structure of an electrochemical oxygen separation device. DESCRIPTION OF SYMBOLS 1... Electrochemical oxygen separator main body, 2... Ion exchange resin membrane, 3... Cathode, 4... Anode, 5...
... Cathode current collector, 6 ... Anode current collector, 7 ... Cathode gas chamber, 8 ... Anode water chamber, 9 ... Cathode terminal plate, 10
...Anode terminal plate, 11...Cell frame, 12...
...Mixed gas inlet containing oxygen, 13...Oxygen outlet, 14...Water tank, 15...Water storage chamber, 16...
...Residual gas outlet, 17...pump.
Claims (1)
る陰極と酸素発生電極からなる陽極とイオン交換
樹脂膜からなる電解質と陰極背面に形成された陰
極ガス室と陽極背面に形成された陽極水室とから
なる電気化学的酸素分離装置において、陰極ガス
室の一部もしくは脱酸素された残余ガスの導出部
に貯水室を設け、陰極で生成する水を該貯水室に
貯え、しかるのちに、陽極水室に直接戻すか、一
旦、水タンクに戻し、該水タンクから陽極水室に
供給することを特徴とする電気化学的酸素分離装
置の作動方法。1 A cathode consisting of a gas diffusion electrode effective for electrolytic reduction of oxygen, an anode consisting of an oxygen generating electrode, an electrolyte consisting of an ion exchange resin membrane, a cathode gas chamber formed on the back of the cathode, and an anode water chamber formed on the back of the anode. In this electrochemical oxygen separation device, a water storage chamber is provided in a part of the cathode gas chamber or in the outlet of the deoxidized residual gas, and the water generated at the cathode is stored in the water storage chamber, and then the anode water is 1. A method of operating an electrochemical oxygen separator, which comprises returning the oxygen directly to the chamber or once returning it to a water tank, and then supplying the water to the anode water chamber from the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18800183A JPH0244764B2 (en) | 1983-10-06 | 1983-10-06 | DENKIKAGAKUTEKISANSOBUNRISOCHINOSADOHOHO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18800183A JPH0244764B2 (en) | 1983-10-06 | 1983-10-06 | DENKIKAGAKUTEKISANSOBUNRISOCHINOSADOHOHO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6081005A JPS6081005A (en) | 1985-05-09 |
| JPH0244764B2 true JPH0244764B2 (en) | 1990-10-05 |
Family
ID=16215900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18800183A Expired - Lifetime JPH0244764B2 (en) | 1983-10-06 | 1983-10-06 | DENKIKAGAKUTEKISANSOBUNRISOCHINOSADOHOHO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0244764B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013067850A (en) * | 2011-09-26 | 2013-04-18 | Toshiba Corp | Oxygen reduction apparatus and refrigerator |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014213808A1 (en) * | 2014-07-16 | 2016-01-21 | BSH Hausgeräte GmbH | Domestic refrigerating appliance with an oxygen device for carrying out a water electrolysis in a closed circuit with a filter device |
| DE102014213810A1 (en) * | 2014-07-16 | 2016-01-21 | BSH Hausgeräte GmbH | Domestic refrigerating appliance with an oxygen device with a removable container |
| JP7853165B2 (en) * | 2022-07-06 | 2026-04-28 | 株式会社デンソー | Electrochemical cell |
-
1983
- 1983-10-06 JP JP18800183A patent/JPH0244764B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013067850A (en) * | 2011-09-26 | 2013-04-18 | Toshiba Corp | Oxygen reduction apparatus and refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6081005A (en) | 1985-05-09 |
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