JPS6123874B2 - - Google Patents
Info
- Publication number
- JPS6123874B2 JPS6123874B2 JP54123407A JP12340779A JPS6123874B2 JP S6123874 B2 JPS6123874 B2 JP S6123874B2 JP 54123407 A JP54123407 A JP 54123407A JP 12340779 A JP12340779 A JP 12340779A JP S6123874 B2 JPS6123874 B2 JP S6123874B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- oxygen
- gas diffusion
- electrode
- electrolyte
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 21
- 239000001301 oxygen Substances 0.000 claims description 21
- 229910052760 oxygen Inorganic materials 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 17
- 238000009792 diffusion process Methods 0.000 claims description 12
- 239000003792 electrolyte Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims 2
- 238000009833 condensation Methods 0.000 claims 2
- 238000006392 deoxygenation reaction Methods 0.000 claims 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 239000008151 electrolyte solution Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 235000011118 potassium hydroxide Nutrition 0.000 description 2
- 230000005679 Peltier effect Effects 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Description
【発明の詳細な説明】
本発明は、電気化学的脱酸素装置に関すもので
あり、その目的とするところは、ガス拡散電極の
細孔を通して蒸発する水分を補水タンクに戻すこ
とによつて、水の有効利用を図ると共に、補水頻
度を少なくせんとするにある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrochemical deoxidation device, the purpose of which is to return water evaporated through the pores of a gas diffusion electrode to a rehydration tank. The goal is to use water more effectively and to reduce the frequency of water replenishment.
陰極として、酸素を電解還元し得る気体拡散電
極を用い陽極として金属あるいは金属酸化物から
なる酸素発生電極を用い、カセイカリの水溶液な
どの電解液を用いるか、あるいはイオン交換膜を
電解質として構成される電解槽の気体拡散電極
に、脱酸素すべき気体、例えば空気を接触させ
つゝ、直流電圧を印加すると陰極で酸素が消費さ
れ、陽極で酸素が発生する。 A gas diffusion electrode capable of electrolytically reducing oxygen is used as the cathode, an oxygen generating electrode made of metal or metal oxide is used as the anode, and an electrolyte such as an aqueous solution of caustic potash is used, or an ion exchange membrane is used as the electrolyte. When a gas to be deoxidized, such as air, is brought into contact with the gas diffusion electrode of the electrolytic cell and a DC voltage is applied, oxygen is consumed at the cathode and oxygen is generated at the anode.
電解液がアルカリ性の場合には、電極反応は次
のようになる。 When the electrolyte is alkaline, the electrode reaction is as follows.
陰極：O2＋2H2O＋4e-→4OH-
陽極：4OH-→O2↑＋2H2O＋4e-
また、電解液が酸素あるいは中性の場合、あるい
は陽イオン交換膜からなる固体電解質を用いた場
合には、次式のようになる。 Cathode: O 2 +2H 2 O+4e - →4OH - Anode: 4OH - →O 2 ↑+2H 2 O+4e -Also , when the electrolyte is oxygen or neutral, or when a solid electrolyte consisting of a cation exchange membrane is used, , as shown in the following equation.
陰極：O2＋4H+＋4e-→2H2O
陽極：2H2O→O2↑4H+＋4e-
したがつて、脱酸素すべき一定の部室と上述の電
解槽の気体室とを閉じられた空間が形成されるよ
うに、連結し両者の間に空気ポンプを付設し、空
気を循環し、陽極から発生する酸素をこの閉じら
れた空間の外に排出するようにすれば上述の部室
の中の酸素が選択的に除去される。すなわち上述
の電解槽は電気化学的脱酸素装置として働く。 Cathode: O 2 +4H + +4e - →2H 2 O Anode: 2H 2 O→O 2 ↑4H + + 4e -Therefore, a certain chamber to be deoxidized and the gas chamber of the electrolytic cell mentioned above are combined into a closed space. By connecting them and installing an air pump between them so that a Oxygen is selectively removed. That is, the electrolytic cell described above acts as an electrochemical deoxidizer.
かゝる電気化学的脱酸素装置において、直流電
圧を印加すると、ジユール熱により電解液の温度
が上り、電解液中の水分が多孔性であるガス拡散
電極の細孔を通じて蒸発し脱酸素すべき空気の循
環系に入つてくる。そのために、脱酸素すべき部
室が過湿状態になる。この過湿状態を防止するた
めには水冷その他の方法で冷却し、蒸発水分を凝
縮しなければならない。一方、電解度中の水分は
消費されるので、補水タンクを用意し、この補水
タンクから水を電解液に補充する必要がある。 In such an electrochemical deoxidation device, when a DC voltage is applied, the temperature of the electrolyte increases due to Joule heat, and water in the electrolyte evaporates through the pores of the porous gas diffusion electrode, causing deoxidation. enters the air circulation system. As a result, the room to be deoxidized becomes overhumidified. In order to prevent this over-humidity state, it is necessary to cool with water or other methods to condense the evaporated water. On the other hand, since the water in the electrolyte is consumed, it is necessary to prepare a water replenishment tank and replenish the electrolyte with water from this water replenishment tank.
ところがまた補水タンク中の水も時間経過と共
に減つていくので、ときどき水を補給しなければ
ならない。この水の補給は電気化学的脱酸素装置
の取扱い上、面倒なのでその頻度はなるべく少な
い方がよい。そのためには補水タンクの容量をよ
り大きくすればよいが、そうすると電気化学的脱
酸素装置が大きくなつてしまうという難点が出て
くる。 However, the water in the water replenishment tank also decreases over time, so water must be replenished from time to time. Replenishing this water is troublesome in handling the electrochemical deoxidizer, so it is better to do it as infrequently as possible. To achieve this, the capacity of the water replenishment tank can be increased, but this poses the problem of increasing the size of the electrochemical deoxidizer.
本発明はかゝる点に着目してなされたものであ
り、冷却によつて、凝縮された水分を補水タンク
に戻すという機構を設けたことにその特徴があ
る。すなわちかゝる方法を採用すると、補水タン
ク中の水の消耗はほとんどなくなるので、その容
積も小さくすることができるし、また、補水タン
クへの補水操作もほとんど不必要となる。 The present invention has been developed with this in mind, and is characterized by the provision of a mechanism for returning condensed water to the water replenishment tank through cooling. In other words, if such a method is adopted, water in the water replenishment tank is hardly consumed, so its volume can be reduced, and there is almost no need to refill the water tank.
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図は電気化学的脱酸素装置の断面構造略図
を示す。部室１中の空気はポンプ２によつて循環
される。空気はまずガス室３に入り、次いでペル
チエ効果を利用した冷却装置４に入り、再び部室
１に戻る。この空気が循環される間に陰極として
のガス拡散電極５と陽極としての酸素発生電極６
との間に、直流電圧を印加すると、空気中の酸素
だけがガス拡散電極５上で還元されると同時に、
酸素発生電極６上で酸素が発生する。Example: FIG. 1 shows a schematic cross-sectional structure of an electrochemical deoxidizer. Air in the chamber 1 is circulated by a pump 2. Air first enters the gas chamber 3, then enters a cooling device 4 utilizing the Peltier effect, and returns to the chamber 1 again. While this air is being circulated, a gas diffusion electrode 5 serves as a cathode and an oxygen generation electrode 6 serves as an anode.
When a DC voltage is applied between , only oxygen in the air is reduced on the gas diffusion electrode 5, and at the same time,
Oxygen is generated on the oxygen generating electrode 6.
ガス拡散電極５は燃料電池の分野で公知にいわ
ゆる酸素極を用い、酸素発生電極６はチタンの表
面に白金とイリジウムを被覆した電極である。 The gas diffusion electrode 5 uses a so-called oxygen electrode known in the field of fuel cells, and the oxygen generation electrode 6 is an electrode made of titanium coated with platinum and iridium.
酸素発生電極６上で生成する酸素は、30％のカ
セイカリ水溶液からなる電解液７をくぐり抜け、
酸素放出口８から系外に排出される。 Oxygen generated on the oxygen generating electrode 6 passes through an electrolytic solution 7 consisting of a 30% caustic potash aqueous solution,
The oxygen is discharged from the system through the oxygen discharge port 8.
一方、循環空気の流れの中にはガス拡散電極５
の細孔を通して、電解液７中の水分が蒸発混入し
てくる。この蒸発水分は冷却装置４で、凝縮され
この凝縮水は補水タンク９に送られる。補水タン
ク９の中の水は、電解液７の液面が減つた分だけ
落下するようになつている。 On the other hand, there is a gas diffusion electrode 5 in the circulating air flow.
Water in the electrolytic solution 7 evaporates and mixes through the pores. This evaporated water is condensed in the cooling device 4, and the condensed water is sent to the water replenishment tank 9. The water in the water replenishment tank 9 is designed to fall by the amount that the liquid level of the electrolytic solution 7 has decreased.
減圧補償装置１０は、部室１の中の酸素が除去
されることによつて生ずる減圧分を補償するため
に空気を導入する。過圧補償装置１１は部室１の
中の温度が上昇し、圧力が上昇したとき、部室１
の中の気体を外部に放出すると共に系内を絶えず
実質的に常圧に保つ。 The reduced pressure compensator 10 introduces air in order to compensate for the reduced pressure caused by the removal of oxygen in the chamber 1. The overpressure compensator 11 controls the pressure in the chamber 1 when the temperature and pressure inside the chamber 1 rise.
The gas in the system is released to the outside, and the system is constantly maintained at substantially normal pressure.
次に、本発明の効果について説明する。 Next, the effects of the present invention will be explained.
実施例における部室の内容積を５とし、ガス
拡散電極の作用面積を4dm2とし、補水タンクの
容量を200c.c.とし、本発明のように冷却による凝
縮水を補水タンクに戻す場合を(A)とし、凝縮水を
戻さずに排棄した場合を(B)とし、それぞれ１日に
つき５回づつ５の部室中の酸素を除去するとい
う操作を繰り返した場合の補水タンク中の水分の
減り具合を調べたところ、操作(A)の場合には200
日間補水の必要がないのに対し、操作(B)の場合に
は20日に一度ずつ補水する必要があつた。 In the example, the internal volume of the chamber is 5, the action area of the gas diffusion electrode is 4 dm 2 , the capacity of the water replenishment tank is 200 c.c., and when the condensed water from cooling is returned to the refill tank as in the present invention, ( A), and (B) the case where the condensed water is discharged without returning it, the decrease in water content in the refilling tank when the operation of removing oxygen in the 5 chambers is repeated 5 times per day. When I checked the situation, it was 200 in case of operation (A).
While there was no need to replenish water every day, in operation (B) it was necessary to replenish water once every 20 days.
すなわち本発明は補水頻度が極めて少なくてす
むがわかる。 In other words, it can be seen that the present invention requires very little water replenishment frequency.
以上詳述せる如く、本発明は電気化学的脱酸素
装置の保守取り扱い上、より容易にするものであ
りその工業的価値極めて大である。 As detailed above, the present invention makes it easier to maintain and handle an electrochemical deoxidizer, and has extremely great industrial value.
第１図は本発明の一実施例にかゝる電気化学的
脱酸素装置の断面構造略図である。
１……部室、２……ポンプ、３……ガス室、４
……冷却装置、５……ガス拡散電極、６……酸素
発生電極、７……電解液、８……酸素放出口、９
……補水タンク、１０……減圧補償装置、１１…
…過圧補償装置。
FIG. 1 is a schematic sectional view of an electrochemical deoxidizer according to an embodiment of the present invention. 1... Club room, 2... Pump, 3... Gas chamber, 4
... Cooling device, 5 ... Gas diffusion electrode, 6 ... Oxygen generation electrode, 7 ... Electrolyte, 8 ... Oxygen release port, 9
... Water replenishment tank, 10 ... Decompression compensator, 11 ...
...Overpressure compensator.
Claims (1)
素発生電極および電解質とで構成される電解槽と
該電解槽に水を補充するための補水タンクと前記
ガス拡散電極から蒸発する水を冷却して凝縮する
ための冷却装置から構成される電気化学的脱酸素
装置であつて、前記凝縮して得られる水を前記補
水タンクに戻すための機構を有することを特徴と
する電気化学的脱酸素装置。1. An electrolytic cell consisting of a gas diffusion electrode as a cathode, an oxygen generating electrode as an anode, and an electrolyte, a water replenishment tank for replenishing water to the electrolytic cell, and cooling and condensation of water evaporated from the gas diffusion electrode. 1. An electrochemical deoxygenation device comprising a cooling device for cooling, the electrochemical deoxidization device comprising a mechanism for returning the water obtained by condensation to the replenishment tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12340779A JPS5647577A (en) | 1979-09-25 | 1979-09-25 | Electrochemical deoxidation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12340779A JPS5647577A (en) | 1979-09-25 | 1979-09-25 | Electrochemical deoxidation apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5647577A JPS5647577A (en) | 1981-04-30 |
| JPS6123874B2 true JPS6123874B2 (en) | 1986-06-07 |
Family
ID=14859784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12340779A Granted JPS5647577A (en) | 1979-09-25 | 1979-09-25 | Electrochemical deoxidation apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5647577A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61117103A (en) * | 1984-11-07 | 1986-06-04 | Japan Storage Battery Co Ltd | Method for controlling oxygen concentration |
| DE102010040534A1 (en) | 2010-09-10 | 2012-03-15 | Robert Bosch Gmbh | Light pipe system for a display device and display device |
| CN113446795B (en) * | 2020-03-24 | 2022-05-20 | 合肥华凌股份有限公司 | Deoxidization module, fresh-keeping device and refrigerator |
-
1979
- 1979-09-25 JP JP12340779A patent/JPS5647577A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5647577A (en) | 1981-04-30 |
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