JPS6067685A - Electrolytic cell for aqueous solution of alkali chloride - Google Patents
Electrolytic cell for aqueous solution of alkali chlorideInfo
- Publication number
- JPS6067685A JPS6067685A JP58173236A JP17323683A JPS6067685A JP S6067685 A JPS6067685 A JP S6067685A JP 58173236 A JP58173236 A JP 58173236A JP 17323683 A JP17323683 A JP 17323683A JP S6067685 A JPS6067685 A JP S6067685A
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic cell
- pipes
- anode chamber
- nozzle
- insertion tube
- 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
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は塩化アルカリ水溶液の’iff解槽に関し、詳
しくは複数個の電気的直列に接続した電解槽において各
単位K Wll槽で生ずる腐食を完全に防止した電解槽
を提供するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an 'if decomposition tank for an aqueous alkali chloride solution, and more specifically, to an electrolytic cell which completely prevents corrosion occurring in each unit KWll tank in a plurality of electrolytic cells electrically connected in series. This is what we provide.
塩化アルカリ水溶液を′電解して苛性アルカリと塩素を
製造する方法として例えばイオン交換膜をはさんで陰、
陽極を設け、陰、陽極室を形成し、塩化アルカリを1は
解して苛性アルカリ液を得る、いわゆるイオン交換脱法
塩化アルカリ電解方法がある。かかる方法を用いる電解
槽プラントはイオン交換膜をはさんで単極型陰、陽極を
設けた単一の単極槽を複数個電気的に接続して構成され
る単極式電解槽を電気的に直列に接続して形成されたシ
、或いはイオン交換膜をはさんで複極J!11j陰、陽
極を設けた単一の複極槽を単位rli解槽とし2てこれ
を電気的に直列に接続して構成きれる複極式電解槽を電
気的に複数個並列および/または1α列に接続して形成
される。As a method for producing caustic alkali and chlorine by electrolyzing an aqueous alkali chloride solution, for example, an ion exchange membrane is sandwiched between
There is a so-called ion exchange de-alkali chloride electrolysis method in which an anode is provided, a negative and anode chamber is formed, and alkali chloride is dissolved to obtain a caustic alkali solution. An electrolytic cell plant using this method is a monopolar electrolytic cell constructed by electrically connecting a plurality of single monopolar cells each having a monopolar cathode and an anode across an ion exchange membrane. J! is formed by connecting it in series with J!, or bipolar J! is formed by sandwiching an ion exchange membrane. 11j A single bipolar electrolytic cell equipped with a negative and anode is used as a unit rli electrolytic cell 2, which can be electrically connected in series to form a plurality of bipolar electrolytic cells electrically connected in parallel and/or in 1α array. is formed by connecting to.
この様な電解槽プラントを用いて塩化アルカリ水溶液を
電解する際、単位電解槽陽彬室への液供給については、
複数個の単位+tl、11″Ni’![亘って設けられ
た1つの共通の通路を辿して(Jl、艙される。また該
+1tilii室からの液払出も同様、一つの共通の通
路を通じてタンク等に集められる。しかしながら、単位
゛電解槽は電気的に直列接続されているため夫々の単位
電解槽に於ける電位は角なっており、電解時に単位電解
槽lII!極室への液供給および該Cに解槽内極室から
の液を共通の通路に抜出す際にはかかる液を通じて電解
電流の一部が漏洩するQかかる電流の漏洩のため′電解
槽本体、特に該本体の液供給ノズルおよび液抜用ノズル
付近はいわゆる電極の作用をし、この部分で電解反応が
起る。′電解槽本体に付設する塩素ガス抜出ノズルも用
様でちるQ
一般に塩化アルカIJ [解槽陽極材質としては’l’
1% NbXTa 等の高級な金属が用いられている
が、この種の材質はかかる電流が漏洩流出するような箇
所においては陽極として作用し、極度の電流値の下で陽
極酸化現象によシ著しく激しい腐食溶解を伴なう0また
、この種の材質は水素を吸収し易い金属であり、かかる
′電流が漏洩流入する箇所においては陰極として作用し
、激しい水素脆化を起すことになる。−1
従来、このような電解槽本体の腐食を防止するために1
、給排液管の内径、長さ等を変化させ、配管抵抗を増大
させようとする方法(特開昭53−12742号、特開
昭53−14696号)、また該給排液管内に多孔板、
弁等を配して液の流通を局部的に遮断することによυ配
管抵抗を増大させ、漏洩電流を最小限に抑えようとする
試みが数多く提案されている(%開昭52−30279
号、特開昭53−45698号)。さらに、配置抵抗イ
ウ試ミモ提案すレテイル(lr!J、開B(35717
4479号)0
しかしながら、この様な方法を採用しても、依然として
陽極室液供給ノズル、液抜用ノズル、および塩素ガス抜
出ノズルならびに114ik室本体の一部においては腐
食損傷のため一定時間の′f(1、輩♀((転後には、
これを取り換え操作成いはl+接内盛nli i’s等
が必要となり、完全に)15食を防止することはできな
い。When electrolyzing an aqueous alkali chloride solution using such an electrolyzer plant, regarding the supply of liquid to the unit electrolyzer chamber,
A plurality of units +tl, 11''Ni'! However, since the unit electrolytic cells are electrically connected in series, the potentials in each unit electrolytic cell are at an angle, and during electrolysis, the liquid supply to the unit electrolytic cell II! C. When the liquid from the inner electrode chamber of the electrolytic cell is extracted into a common passage, a part of the electrolytic current leaks through the liquid. The area around the supply nozzle and drain nozzle acts as a so-called electrode, and the electrolytic reaction occurs in this area.'The chlorine gas extraction nozzle attached to the electrolytic cell body also depends on the usage. 'L' as anode material
High-grade metals such as 1% NbXTa are used, but these types of materials act as anodes at points where such current leaks out and are severely susceptible to anodic oxidation phenomena under extreme current values. In addition, this type of material is a metal that easily absorbs hydrogen, and acts as a cathode at locations where such current leaks in and out, causing severe hydrogen embrittlement. -1 Conventionally, in order to prevent corrosion of the electrolytic cell body, 1
, a method of increasing the piping resistance by changing the inner diameter, length, etc. of the liquid supply/drainage pipe (Japanese Patent Application Laid-open Nos. 12742/1982 and 14696/1983), and a method of increasing the piping resistance by changing the inner diameter, length, etc. board,
Many attempts have been proposed to minimize leakage current by increasing piping resistance by arranging valves or the like to locally cut off the flow of liquid (% 1973-30279)
No., Japanese Patent Publication No. 53-45698). In addition, the layout resistance IU trial model is proposed (lr! J, open B (35717
No. 4479)0 However, even if such a method is adopted, the anode chamber liquid supply nozzle, liquid drain nozzle, chlorine gas extraction nozzle, and a part of the 114ik chamber main body will still be damaged for a certain period of time due to corrosion damage. 'f(1, mate♀((After the transfer,
This requires a replacement operation or l+applied serving nli i's, etc., and it is not possible to completely prevent 15 meals.
また、陽極液中に塩酸等を添加しpl+を「げ、生成塩
素ガス中の酸素の混入を極力抑えようという試みがなさ
れているが、このように陽極液の、Hを下げ′ると、液
の電導度が上昇ずろ/こめかかる電流は増加する0また
、陽極室材質の腐食ならび水素吸収もpHが低下すると
、その損傷の度合も増加する傾向にあり、両者が重なっ
て著しく激しい腐食損傷を受ける結果となシ、長期間安
定な電解運転を維持することができない0
特に、イオン交換脱法電解に使用されるイオン交換膜は
金属イオンの吸着性が強<、゛rt1解液中に金属イオ
ンが存在すると該イオン交換膜表面に吸着析出し、脱退
電圧を低下させることになる。また、一端性能が劣化し
た膜は嘔解液中の金稙イオンが低ドシでもほとんど性能
復帰しない。従って、このことからも陽極室本体の腐食
は完全に防止する必要性を生じる。In addition, attempts have been made to add hydrochloric acid or the like to the anolyte to increase the PL+ and to suppress the contamination of oxygen in the generated chlorine gas as much as possible. The electrical conductivity of the liquid increases/the applied current increases 0 In addition, as the pH decreases, the degree of corrosion and hydrogen absorption of the anode chamber material also tends to increase, and the combination of these two causes extremely severe corrosion damage. In particular, the ion exchange membrane used in ion exchange desorption electrolysis has a strong ability to adsorb metal ions. If ions are present, they will be adsorbed and deposited on the surface of the ion exchange membrane, lowering the desorption voltage.Furthermore, membranes whose performance has deteriorated will hardly recover their performance even if the concentration of phlegm ions in the lysate is low. Therefore, this also creates a need to completely prevent corrosion of the anode chamber body.
以上の点から本発明者は研死全重ねた結果本発明に到達
しン′(。In view of the above points, the present inventor has arrived at the present invention as a result of extensive research.
すなわち、本発明は゛電解槽陽極室に設置される液供給
ノズルおよび/または生成液抜出ノズル内に絶縁性の挿
入管を設け、さらに陽極室内における該挿入管開孔部付
近および/または該挿入管内に4iti 1JJJ電極
を設置作することを特徴とする塩化アルカリ水溶液用電
解槽を提供するものである。That is, the present invention provides an insulating insertion tube in the liquid supply nozzle and/or produced liquid extraction nozzle installed in the anode chamber of the electrolytic cell, and further provides an insulating insertion tube in the vicinity of the opening of the insertion tube in the anode chamber and/or in the insertion tube. The present invention provides an electrolytic cell for an aqueous alkali chloride solution, characterized in that 4it 1JJJ electrodes are installed inside the tube.
本発明は電解槽内に絶縁性の」((1人管を設けること
により、漏洩抵抗の一部をij(解槽内で形成させ、リ
ーク電流を最小限に抑え、さらに、その(j;!小す−
ク電流によって発生する該挿入管開孔部付近での陽極酸
化腐食反応ならびに水素発生反応を補助電極を設置する
ことによって、4 ’r’+”i槽でのM%食損傷を完
全に抑える手段を有する電力了槽を4jA供するもので
ある。The present invention provides an insulating tube inside the electrolytic cell, so that part of the leakage resistance is formed within the electrolytic cell, minimizing the leakage current, and furthermore, the leakage resistance is minimized. !Small
A means of completely suppressing M% corrosion damage in the 4'r'+"i tank by installing an auxiliary electrode to prevent the anodic oxidation corrosion reaction and hydrogen generation reaction near the opening of the insertion tube caused by the current. It provides a 4JA power supply tank with a
この場合の補助電極は内接溶解反応としては全く作用せ
ず、ガス発生反応又は溶液の酸化反応、又は溶液の遺児
反応として作用する電極である。The auxiliary electrode in this case is an electrode that does not act as an internal dissolution reaction at all, but acts as a gas generation reaction, a solution oxidation reaction, or a solution orphan reaction.
本発明における電解槽本体とは伯を+1η成する部材で
あシ、例えば極室ブール型亀M槽であれば箱体;フィル
タープレス型電解槽であれば♀枠がこれに相当する。槽
を構成する部材である陽極室および陽極室に付属するノ
ズル材質としてシコ:一般にチタン、チタン合金、タン
タル、ジルコニウム、ニオブ等が用いられ、また陰4ゲ
室ならびに陰杉室に付属するノズル材質としては、鉄、
軟カ・1、鋳鉄、ステンレス鋼、Ni基合金、旧等が用
いられる。In the present invention, the electrolytic cell main body is a member having an angle of +1η; for example, in the case of a pole-chamber boule type tome M cell, the box body corresponds to this; in the case of a filter press type electrolytic cell, the ♀ frame corresponds to this. Titanium, titanium alloy, tantalum, zirconium, niobium, etc. are generally used as materials for the anode chamber and the nozzles attached to the anode chamber, which are the members that make up the tank. As for iron,
Soft force 1, cast iron, stainless steel, Ni-based alloy, old etc. are used.
陽陰極室に付椙するノズルは溶接等により接続されてい
る態様が一般的である。液供給および液払出ノズルとし
てはパイプ状のものが多く用いられるが、その他種々の
形状のものが用いられる。The nozzles attached to the anode and cathode chambers are generally connected by welding or the like. Pipe-shaped nozzles are often used as liquid supply and liquid discharging nozzles, but various other shapes can also be used.
本発明において液給排ノズル内に設置Wされる挿入管は
電気絶縁性であることが望ましい。電気伝導性であれば
挿入管を通って腐食電流が流れる恐れがあるからである
。挿入管材料は、塩化アルカリ水溶液、塩素ガス等に対
して電M温度下で耐えて電気絶縁性であればよい。In the present invention, it is desirable that the insertion tube installed in the liquid supply/discharge nozzle be electrically insulating. This is because if it is electrically conductive, there is a risk that a corrosive current will flow through the insertion tube. The insertion tube material may be electrically insulative as long as it can withstand an aqueous alkali chloride solution, chlorine gas, etc. at an electric temperature.
例えば、テフロン、アスベスト、塩化ビニール。For example, Teflon, asbestos, and vinyl chloride.
アクリル樹脂、EPDMゴムやその他のゴム等が挙げら
れる。Examples include acrylic resin, EPDM rubber, and other rubbers.
挿入管の形状としてはパイプ状のものが多く用いられ、
少なくとも1箇所の開孔部を有するものである。Pipe-shaped insertion tubes are often used,
It has at least one opening.
本発明の補助電極は陽極としても、陰極としても作動す
る。すなわち、電解電流の一部が漏洩流出する゛電解槽
における補助電極は陽極として、漏洩流入する電解槽に
おける補助IE杼は陰極として作用する。The auxiliary electrode of the present invention operates both as an anode and as a cathode. That is, the auxiliary electrode in the electrolytic cell from which a part of the electrolytic current leaks out acts as an anode, and the auxiliary IE shuttle in the electrolytic cell from which part of the electrolytic current leaks out acts as a cathode.
陽極として作動する補助−′11L極としては、例えば
白金族の金属をチタン又はタンタル上に被覆させた、い
わゆる被覆金属電極、黒鉛ブロック、また純Zr)Ag
などが使用される。As auxiliary electrodes which act as anodes, so-called coated metal electrodes, such as metals of the platinum group coated on titanium or tantalum, graphite blocks, and also pure Zr)Ag can be used.
etc. are used.
陰極として作動する補助電極としては例えば白金族金属
、または白金族被覆全域fiL林、黒鉛ブロック、純N
+ −、Zr % Agなどが使用されるが、陰極とし
て作用する場合はm解反応ン一はとんど伴なわないので
、Ti、Ta等のものを犠牲的に取り付く1水素脆化し
ても定期的に取り換えてやれば、補助電極として十分使
用可能である。Auxiliary electrodes that act as cathodes include, for example, platinum group metals or platinum group coated areas, graphite blocks, pure N
+ -, Zr%Ag, etc. are used, but when acting as a cathode, the m-reaction reaction hardly occurs, so even if hydrogen embrittlement is caused by sacrificially attaching Ti, Ta, etc. If it is replaced regularly, it can be used as an auxiliary electrode.
本発明の補助′電極設置箇所としては、特に限定されな
いが、操作上の観1点から、寸;A:l鴻食を防止する
効率の点から、陽極液供給ノズルおよび7寸たけ生成液
抜出ノズル内に設置された絶縁性の挿入管の開孔部付近
および/まだはJr11人・群内に設けることが好まし
い。The locations for installing the auxiliary electrodes of the present invention are not particularly limited, but from the operational point of view, the anolyte supply nozzle and the produced liquid drain should be selected from the viewpoint of efficiency in preventing corrosion. It is preferable to provide it near the opening of the insulating insertion tube installed in the exit nozzle and/or within the Jr. 11 group.
本発明用補助電極の形状としては線、棒、金網、板等、
各積用いられ、電極として作用するものであれば、すべ
ての態様のものが採用される。特に板材を用いる場ば、
陽極室本体に直接張り付けるか、または本体の一部を補
助電極として作用する材質で製作するととも本発明を実
施するに当やでは有効、な手段である。The shapes of the auxiliary electrodes for the present invention include wires, rods, wire mesh, plates, etc.
All embodiments may be adopted as long as they are used for each product and act as electrodes. Especially when using plate materials,
Direct attachment to the anode chamber main body or a part of the main body made of a material that acts as an auxiliary electrode are effective means for carrying out the present invention.
本発明によれば電解槽陽極室に股部される液供給ノズル
および/′または生成液抜出ノズル内に絶縁性の挿入管
を設け、さらに該挿入管開孔部付近および/または挿入
管内に補助電極を設置することによシミ解槽本体および
at解解重本体伺属する金kA製ノズルの腐食を完全に
防止することができる。このだめ電解槽の寿命は著しく
長くなり、特に陽極液中に雇酸等を添加し、低pH運転
する場合は極めて有効であり、従来の方法に比べ1、メ
ンテナンスが軽減できる点において4dlLめて経済的
に優れた電解槽で;らる。According to the present invention, an insulating insertion tube is provided in the liquid supply nozzle and/or the produced liquid extraction nozzle which are inserted into the anode chamber of the electrolytic cell, and furthermore, an insulating insertion tube is provided near the opening of the insertion tube and/or inside the insertion tube. By installing the auxiliary electrode, it is possible to completely prevent corrosion of the stain decomposition tank body and the gold kA nozzle attached to the AT decomposition body. The life of this electrolytic cell is significantly longer, and it is extremely effective when operating at low pH by adding acid to the anolyte.Compared to conventional methods, maintenance is reduced by 4 dlL. With an economically superior electrolytic cell;
本発明の電解槽は陽極室供給液および該陽極室抜出液中
に溶出金属イオンの量が皆無に等しいから、イオン交換
膜に対する悪影響、すなわちイオン交換膜の性能低下を
起すことなく漁具的な寿命を維持することができる。Since the electrolytic cell of the present invention has almost no eluted metal ions in the anode chamber supply liquid and the anode chamber extraction liquid, it does not cause any adverse effect on the ion exchange membrane, that is, a decrease in the performance of the ion exchange membrane, and can be used as a fishing gear. The lifespan can be maintained.
次に本発明の実施例について説明する。Next, examples of the present invention will be described.
(実施例1)
陽極はルテニウムオキサイドとチタニウムオキサイドを
コーティングしたチタニウムのエキスバンドメタル、陰
極はN1のエキスバンドメタルからなる複極式電極を有
し、本体は陽極室がチタニウム、陰極室がSU8304
ステンレン鋼よりなる通電面積200 am” (幅2
m X高さ1n7)の士ルユニットを用いた。(Example 1) The anode has a bipolar electrode made of expanded titanium metal coated with ruthenium oxide and titanium oxide, and the cathode is made of N1 expanded metal.The main body has an anode chamber made of titanium and a cathode chamber made of SU8304.
Current-carrying area 200 am” (width 2
A unit with a size of 1 m x height 1 n 7) was used.
単位電解槽陽極室の概m3図をオ1図に示す。′電解槽
陽極室本体1のノズルにはフッ諧樹脂製の液供給管2お
よび生成液抜出管3を設置i′″l°シ、生成液抜出管
3は滴下器4に連結した。′+だ液供給管2および滴下
器4にはセルユニット共通の通路5.6を接続し、液供
給ノズル、生成液抜出ノズル内にはフッ素樹脂製の挿入
管7を設けた。さらに、挿入管開孔部付近または挿入管
内には補助’+13’、極を設置した。An approximate m3 diagram of the anode chamber of a unit electrolytic cell is shown in Figure O1. A liquid supply pipe 2 and a product liquid extraction pipe 3 made of fluorocarbon resin were installed in the nozzle of the electrolytic cell anode chamber main body 1, and the product liquid extraction pipe 3 was connected to a dropper 4. A passage 5.6 common to the cell unit was connected to the saliva supply pipe 2 and the dropper 4, and an insertion pipe 7 made of fluororesin was provided in the liquid supply nozzle and the produced liquid extraction nozzle.Furthermore, An auxiliary '+13' pole was installed near the opening of the insertion tube or inside the insertion tube.
補助電極として、高電位側に位1消する、すなわち電解
電流の一部が漏洩流出するセルユニットにはルテニウム
オキザイドとチタニウムオキザイドをコーティングした
チタニウム製補助’ir&極を、また、低電位側に位置
する、すなわち、−かかる電流が漏洩流入するセルユニ
ットにはTI製の補助′電極を設置した。As an auxiliary electrode, a titanium auxiliary electrode coated with ruthenium oxide and titanium oxide is used for the cell unit where part of the electrolytic current leaks out on the high potential side. An auxiliary electrode made by TI was installed in the cell unit located at , that is, through which such current leaks and flows.
上記のセルユニット25対に陽イオン交換膜Na日on
901 (商品名デュポン社製)を隔)換としてはさ
み込み、復極式電解槽を作った。A cation exchange membrane Na day was applied to 25 pairs of the above cell units.
901 (trade name, manufactured by DuPont) was inserted as a separator to make a bipolar electrolytic cell.
次に食塩の電解を電流密度30A/am″、電解温度9
0℃で行なった。電解供給塩水濃度は200 t/、l
、、またp)lは4に設定1−た。Next, salt was electrolyzed at a current density of 30 A/am'' and an electrolysis temperature of 9.
It was carried out at 0°C. The concentration of electrolyzed brine is 200 t/l
,, and p)l was set to 4.
その時の塩水中のTi7i度を1ケ月毎に測定したが、
2年間運転してもその濃度はすべて検出限界0.01p
pm以下の値を示し、電解槽を解体し、腐食状況を調食
してみたが、電解槽内部での腐食は全く認められなかっ
た。At that time, the Ti7i degree in the salt water was measured every month.
Even after two years of operation, all concentrations are below the detection limit of 0.01p.
The electrolytic cell was disassembled and the corrosion condition was examined, but no corrosion was observed inside the electrolytic cell.
(実施例2)
実施例1において補助電極設甜方法を第2図〜4図に示
すように付は変えた以外は実施例1と同一条件で食塩の
電解を行っだ。(Example 2) Salt was electrolyzed under the same conditions as in Example 1, except that the method of installing the auxiliary electrode in Example 1 was changed as shown in FIGS. 2 to 4.
第2図は生成液抜出ノズル内に設Gイj7た挿入管7開
孔部付近にメツシュ補助’)W4舅8を取り付けだ場合
、第3図は液供給ノズル内に設置した挿入管7に横穴を
数個開け、その回りに日前状のメッシュ補助電極8を配
置した場合、また、第4図は液供給ノズル内に挿入管7
を設け、その挿入′1を内に棒状補助電極8を配置した
場合の例である。Figure 2 shows the insertion tube 7 installed in the product liquid extraction nozzle when a mesh supporter is installed near the opening of the insertion tube 7, and Figure 3 shows the insertion tube 7 installed in the liquid supply nozzle. In the case where several side holes are made in the liquid supply nozzle and mesh auxiliary electrodes 8 are arranged around them, FIG.
This is an example in which a rod-shaped auxiliary electrode 8 is placed inside the insertion '1.
補助′電極材質としては実施例1と同様、高電位側に位
置するセルユニットにはルテニウム−AA−サイドとチ
タニウムオキザイドをコーディングしたチタン製であり
、低電位側に位(?゛1するセルユニットはTi製であ
る。As for the auxiliary electrode material, as in Example 1, the cell unit located on the high potential side is made of titanium coated with ruthenium-AA-side and titanium oxide, and the cell unit located on the low potential side is made of titanium coated with ruthenium-AA-side and titanium oxide. The unit is made of Ti.
その結果は、実施例1と同様、2年間運転しても腐食は
全く認められず、本発明の電苗槽し−目1柘食を完全に
防止する手段を有する焼異的なrIL解槽であることが
証明された。The results showed that, as in Example 1, no corrosion was observed even after two years of operation. It was proven that.
(実施例3)
実施例1において、電解供給塩水に塩rりを添加し、p
Hを4から2に下げ、それ以外は実施例1と同−条件で
食1jiKの電解を行った。(Example 3) In Example 1, salt was added to the electrolytically supplied brine, and p
Electrolysis of 1 jiK of food was carried out under the same conditions as in Example 1 except that H was lowered from 4 to 2.
その結果、−年間電解運転後、′1「解槽を解体し7、
腐食状況を調査してみたが、電解槽内部での腐食は全く
認められず、またイオン交換膜への析出物も全く検出さ
れなかった。As a result, after −1 year of electrolysis operation, the tank was dismantled and
We investigated the corrosion situation, but no corrosion was observed inside the electrolytic cell, and no deposits were detected on the ion exchange membrane.
(比較例1)
実施例3において補助電(v8を取りはずし、それ以外
は実施例3と同一条件で食塩の電解を行ったO
その結果、1解運転初期から電圧上昇がみられ、約1ケ
月経過後にはT’i缶体からの洩れが検出さiした。約
15ケ月電解運転後、電解槽を解体してみたところ、液
供給ノズルおよび液払出ノズル内に挿入し)こ挿入管7
の開ロ部イ1近のT1缶休体高電位側セルユニットにお
いては激しいrt<食、低′tE位側セルユニットにお
いては水素脆化していた。(Comparative Example 1) In Example 3, the auxiliary voltage (V8) was removed, and salt electrolysis was performed under the same conditions as in Example 3. After a period of time, leakage from the T'i can was detected.After about 15 months of electrolytic operation, I disassembled the electrolytic cell and found that the insertion tube 7 was inserted into the liquid supply nozzle and liquid discharge nozzle.
Severe rt< eclipse occurred in the high-potential side cell unit of the T1 tank near the opening A1, and hydrogen embrittlement occurred in the low'tE side cell unit.
このことからも本発明の1(を解槽は完全腐食防止手段
を有するしI:かりでなく、省エネルギーの観点からも
すぐれブこTlil注解を維持できる電解槽であること
か明らかとなった。From this, it is clear that the electrolytic cell according to the present invention is not only equipped with a means for completely preventing corrosion, but is also an excellent electrolytic cell that can maintain excellent corrosion resistance from the viewpoint of energy saving.
第1図から第4図は本発明における補助ttt 4?な
らびに挿入管を付設した塩化アルカリ溶液の単位電解槽
の各態様を模式的に示した説明図である。
各図において、
1は単位電解槽、2は陽極室液供給イf”、’rsは陽
極室生成液抜出管、4は滴下器、5 Jd )り枠゛$
液供給管の共通の通路、6は陽極室生成液抜1旧t1の
共通の通路、7は挿入管、8は補助:(1,、析特許出
願人 東洋曹;’A I業I′l:式会社第 1 図
第 2 図
第 6 図FIGS. 1 to 4 are auxiliary ttt 4? in the present invention. FIG. 2 is an explanatory diagram schematically showing various aspects of a unit electrolytic cell for an alkali chloride solution provided with an insertion tube. In each figure, 1 is a unit electrolytic cell, 2 is an anode chamber liquid supply f'', 'rs is an anode chamber produced liquid extraction pipe, 4 is a dropper, 5 is a frame.
A common passage of the liquid supply pipe, 6 a common passage of the anode chamber produced liquid drain 1 former t1, 7 an insertion pipe, 8 an auxiliary: (1, analysis patent applicant Toyoso; 'AI Industry I'l : Shikisha Figure 1 Figure 2 Figure 6
Claims (1)
び/または生成液抜出ノズル内に絶縁性の挿入管を設け
、さらに陽極室内における該挿入管開孔部付近および/
または該挿入管内に補助電極を設置することを特徴とす
る塩化アルカリ水溶液用市解槽 2)単位電解槽がイオン交換膜を隔膜とした電解槽であ
る特許請求の範囲坩・1項記載の電解槽[Scope of Claims] 1) An insulating insertion tube is provided in the liquid supply nozzle and/or the produced liquid extraction nozzle installed in the anode chamber of the unit electrolytic cell, and further in the vicinity of the opening of the insertion tube in the anode chamber. and/
or an auxiliary electrode is installed in the insertion tube.2) The electrolysis according to claim 1, wherein the unit electrolytic cell is an electrolytic cell having an ion exchange membrane as a diaphragm. tank
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58173236A JPS6067685A (en) | 1983-09-21 | 1983-09-21 | Electrolytic cell for aqueous solution of alkali chloride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58173236A JPS6067685A (en) | 1983-09-21 | 1983-09-21 | Electrolytic cell for aqueous solution of alkali chloride |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6067685A true JPS6067685A (en) | 1985-04-18 |
Family
ID=15956671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58173236A Pending JPS6067685A (en) | 1983-09-21 | 1983-09-21 | Electrolytic cell for aqueous solution of alkali chloride |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6067685A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006336041A (en) * | 2005-05-31 | 2006-12-14 | Asahi Kasei Chemicals Corp | Hose connecting fixture for electrolytic cell, and electrolyzer unit |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5256080A (en) * | 1975-11-04 | 1977-05-09 | Asahi Chem Ind Co Ltd | Electrolytic cell of compound electrodes type provided with supplement ary electrodes |
JPS5314197A (en) * | 1976-07-26 | 1978-02-08 | Tokuyama Soda Co Ltd | Anti-corrosive method for nozzle |
JPS5361592A (en) * | 1976-11-16 | 1978-06-02 | Asahi Glass Co Ltd | Electrolytic corrosion preventing method for alkali chloride cell plant |
-
1983
- 1983-09-21 JP JP58173236A patent/JPS6067685A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5256080A (en) * | 1975-11-04 | 1977-05-09 | Asahi Chem Ind Co Ltd | Electrolytic cell of compound electrodes type provided with supplement ary electrodes |
JPS5314197A (en) * | 1976-07-26 | 1978-02-08 | Tokuyama Soda Co Ltd | Anti-corrosive method for nozzle |
JPS5361592A (en) * | 1976-11-16 | 1978-06-02 | Asahi Glass Co Ltd | Electrolytic corrosion preventing method for alkali chloride cell plant |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006336041A (en) * | 2005-05-31 | 2006-12-14 | Asahi Kasei Chemicals Corp | Hose connecting fixture for electrolytic cell, and electrolyzer unit |
JP4546329B2 (en) * | 2005-05-31 | 2010-09-15 | 旭化成ケミカルズ株式会社 | Electrolyzer hose connection jig and electrolyzer unit |
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