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JPS60211090A - Electrolytic cell provided with cation exchange membrane - Google Patents

Electrolytic cell provided with cation exchange membrane

Info

Publication number
JPS60211090A
JPS60211090A JP58178916A JP17891683A JPS60211090A JP S60211090 A JPS60211090 A JP S60211090A JP 58178916 A JP58178916 A JP 58178916A JP 17891683 A JP17891683 A JP 17891683A JP S60211090 A JPS60211090 A JP S60211090A
Authority
JP
Japan
Prior art keywords
cation exchange
electrolytic cell
exchange membrane
cathodes
anode
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
JP58178916A
Other languages
Japanese (ja)
Other versions
JPS6135278B2 (en
Inventor
Tokuzo Iijima
飯島 徳三
Toshiji Yamamoto
利治 山本
Kazuo Kishimoto
岸本 一男
Takamichi Komabashiri
駒走 隆道
Toshiji Kano
叶 敏次
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.)
Kanegafuchi Chemical Industry Co Ltd
Original Assignee
Kanegafuchi Chemical Industry Co Ltd
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 Kanegafuchi Chemical Industry Co Ltd filed Critical Kanegafuchi Chemical Industry Co Ltd
Priority to JP58178916A priority Critical patent/JPS60211090A/en
Publication of JPS60211090A publication Critical patent/JPS60211090A/en
Publication of JPS6135278B2 publication Critical patent/JPS6135278B2/ja
Granted legal-status Critical Current

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

Abstract

PURPOSE:The titled electrolytic cell capable of producing NaOH having high purity with small consumption of electric power constituted by interposing extremely thin spacers between finger shaped cathodes and cation exchange membranes and attaching anodes to the cation exchange membranes tightly with springs. CONSTITUTION:In an electrolytic cell provided with cation exchange membranes 4 attached between vertically provided parallel finger shaped cathodes 2 and extendable metallic anodes 3 planted to a base plate 12, extremely thin or extremely slender spacers 19 are interposed between said cathodes 2 and said cation exchange membranes 4 to adjust the distance between the cathodes and the cation exchange membrane to ca. 1-5mm., and anodes 3 are, on one hand, extended by springs to attach tightly to the cation exchange membrane 4. Electrolysis is performed by introducing aq. NaCl from an anolyte inlet 5, and water, etc. are introduced from catholyte inlet 9, of said electrolytic cell, and dil NaCl soln. is withdrawn from anolyte outlet 6, gaseous chlorine from anode gas outlet 7, gaseous H2 from cathode gas outlet 11, and concd. NaOH soln. having high purity is obtd. from catholyte outlet 10 with low cell voltage and small power consumption.

Description

【発明の詳細な説明】 本発明は新規な陽イオン交換膜電解槽に関し、更に詳し
くはフィンガー型電解槽に陽イオン交換膜を装着してな
り、高純度の苛性アルカリかえられ且つ消費電力の少な
い陽イオン交換膜電解槽に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel cation exchange membrane electrolytic cell, and more specifically, a finger-type electrolytic cell equipped with a cation exchange membrane, which is capable of converting high-purity caustic alkali and has low power consumption. This invention relates to a cation exchange membrane electrolytic cell.

従来、アスベスト隔膜により陽極室と陰極室とに区画さ
れたフィンガー型電解槽を用いてハロゲン化アルカリ水
溶液、例えば塩化アルカリ水溶液から塩素及び水酸化ア
ルカリ水溶液を製造する方法は、製品塩素中の酸素濃度
が高い上、製品水酸化アルカリ水溶液中の塩化アルカリ
濃度が高いという製品品質上の問題と、得られる水酸化
アルカリ水溶液濃度が約10%と低いために濃縮も必要
とし、従って濃縮用のエネルギーを要するという問題が
ある。更にまた、アスベストに起因する労働環境上の問
題も無視できない。これに対して陽イオン交換膜電解槽
を使用する方法は製品品質は良好である上、得られる水
酸化アルカリ水溶液の濃度が30%以上と高く濃縮用の
エネルギーが少なくてすむという利点があるばかりでな
く、またアスベストの如き労働環境上の問題を伴わない
Conventionally, a method for producing chlorine and alkali hydroxide aqueous solutions from an alkali halide aqueous solution, such as an alkali chloride aqueous solution, using a finger-type electrolytic cell divided into an anode chamber and a cathode chamber by an asbestos diaphragm has been used to reduce the oxygen concentration in the product chlorine. In addition, there are product quality problems such as high alkali chloride concentration in the product alkali hydroxide aqueous solution, and concentration is also required because the concentration of the obtained alkali hydroxide aqueous solution is low at about 10%, so energy for concentration is required. There is a problem that it is necessary. Furthermore, problems with the working environment caused by asbestos cannot be ignored. On the other hand, the method of using a cation exchange membrane electrolytic cell has the advantage that not only the product quality is good but also the concentration of the alkali hydroxide aqueous solution obtained is high at 30% or more and requires less energy for concentration. It also does not pose any labor environment problems like asbestos.

しかしてアスベスト隔膜電解槽をスクラップ化すること
なく陽イオン交換膜電解槽に転換することができれば産
業上も労働衛生上も極めて望ましく、また省エネルギー
の諸施策にも大きく貢献することになる。
If an asbestos diaphragm electrolytic cell could be converted to a cation exchange membrane electrolytic cell without scrapping, it would be extremely desirable from an industrial and occupational health standpoint, and would also greatly contribute to various energy-saving measures.

本発明者等はかかる見地から鋭意研究を重ねた結果、本
発明を完成するに至っ赳ものである。
As a result of extensive research from this perspective, the present inventors have completed the present invention.

即ち、本発明は平行列垂直に設けられたフィンガー状陰
極と、底板上に植設された陽極とを備えたフィンガー型
電解槽において、前記陰極と陽極との間に陽イオン交換
膜が装着され、該陰極と陽イオン交換膜との間にスペー
サーが介装され、且つ該陽イオン交換膜と陽極とは該陽
極のバネにより密着した構造からなることを特徴とする
陽イオン交換膜電解槽を内容とする。
That is, the present invention provides a finger-type electrolytic cell equipped with finger-shaped cathodes arranged vertically in parallel rows and an anode planted on a bottom plate, in which a cation exchange membrane is installed between the cathode and the anode. , a cation exchange membrane electrolytic cell characterized in that a spacer is interposed between the cathode and the cation exchange membrane, and the cation exchange membrane and the anode are in close contact with each other by a spring of the anode. Contents.

尚、本発明において、フィンガー型電解槽とはJ、S、
5CONCE編″CHLORINE−Its Manu
facture、 Pro−perties And 
Uses (Reinhold Publishing
 Corpo−ration、 NEW YORK+ 
1962)の93頁に記載されているFinger−t
ype construction の電解槽のほかに
、Flattened tube−type cons
truction の電解槽をも包含する。かかる電解
槽としては、例えばフッカ−H−4型、H−2A型、ダ
イヤモンドジャムロックDS−85型、DS−45型等
が挙げられる。
In addition, in the present invention, finger type electrolytic cells are J, S,
5CONCE Edition “CHLORINE-Its Manu”
facture, pro-perties and
Uses (Reinhold Publishing
Corporation, NEW YORK+
Finger-t described on page 93 of 1962)
In addition to electrolytic cells of ype construction, Flattened tube-type cons
It also includes an electrolytic cell. Examples of such electrolytic cells include Hooker H-4 type, H-2A type, Diamond Jamrock DS-85 type, and DS-45 type.

本発明に用いられる陽極としては、アスベスト隔膜法で
使用されている所謂ボックス型金属電極の両端を切断し
押し拡げることを可能とした構造の電極を使用しうる。
As the anode used in the present invention, an electrode having a structure in which both ends of a so-called box-shaped metal electrode used in the asbestos diaphragm method can be cut and then expanded can be used.

アスベスト隔膜をテフロン系樹脂で処理した改造隔膜法
で使用されている所謂拡張可能金属陽極タイプの電極を
使用することも出来る。これはバネの力で拡張するもの
であるが、バネの拡張力を調節することにより、陽イオ
ン交換膜に陽極を密着させることが出来る。本発明に用
いられるスペーサーとしては、極薄又は極細のスペーサ
ーが好適で、陰極と陽イオン交換膜との間隔は通常約1
乃至5mmに維持される。
It is also possible to use a so-called expandable metal anode type electrode used in the modified diaphragm method in which an asbestos diaphragm is treated with a Teflon resin. This is expanded by the force of a spring, and by adjusting the expansion force of the spring, the anode can be brought into close contact with the cation exchange membrane. As the spacer used in the present invention, an extremely thin or extremely fine spacer is suitable, and the distance between the cathode and the cation exchange membrane is usually about 1
It is maintained between 5 mm and 5 mm.

以下、本発明の実施態様を示す図面に基づいて説明する
が、本発明はこれにより制限されるものではない。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on drawings, but the present invention is not limited thereto.

第1図において、本発明電解槽はFRP製セルカバー(
1)、フィンガー状陰極(2)及び拡張可能金属陽極(
3)からなる単極式フィンガー型電解槽に、陽イオン交
換膜(4)を装着してなる。
In Fig. 1, the electrolytic cell of the present invention has an FRP cell cover (
1), finger-shaped cathode (2) and expandable metal anode (
A cation exchange membrane (4) is attached to a monopolar finger type electrolytic cell consisting of (3).

セルカバー(1)は陽極液入り口(5)、陽極液出口(
6)及び陽極ガス出口(7)を備えている。フィンガー
状陰極(2)を平行列垂直に内蔵してなる陰極ボックス
(8)は、陰極液入り口(9)、陰極液出口(lO)及
び陰極ガス出口(11)を備えている。
The cell cover (1) has an anolyte inlet (5) and an anolyte outlet (
6) and an anode gas outlet (7). A cathode box (8) containing finger cathodes (2) in parallel rows and vertically includes a catholyte inlet (9), a catholyte outlet (lO) and a cathode gas outlet (11).

拡張可能金属陽極(3)は底板(12)に平行列垂直に
植設され、ゴム製ブランケット(13)によりシールさ
れている。拡張可能金属陽極(3)はそれぞれ対向する
フィンガー状陰極(2)と咬合するように組み立てられ
る。
Expandable metal anodes (3) are implanted vertically in parallel rows in the bottom plate (12) and sealed by a rubber blanket (13). The expandable metal anodes (3) are each assembled to interlock with an opposing finger-shaped cathode (2).

陽イオン交換l14(4)としては、デュポン社製“ナ
フィオン#315”膜を腹巻型に成形し、チタン製陽イ
オン交換膜取りつけ枠(14)を使用して、押さえ板(
15)及びパツキン(16)を介して圧着(ボルト締め
)によって装着されている。
As the cation exchange l14 (4), a "Nafion #315" membrane manufactured by DuPont was formed into a belly band shape, and a titanium cation exchange membrane mounting frame (14) was used to attach the holding plate (
15) and a packing (16) by crimping (bolting).

かくして、陽イオン交換Il! (4)を介して内部に
拡張可能金属陽極(3)を有する陽極室(17)とフィ
ンガー状陰極(2)を有する陰極室(18)とが形成さ
れる。
Thus, cation exchange Il! Via (4) an anode chamber (17) with an expandable metal anode (3) inside and a cathode chamber (18) with a finger-shaped cathode (2) are formed.

フィンガー状陰極(2)と陽イオン交換膜(4)との間
には例えば直径2mmの棒状スペーサー(19)を10
0mm間隔で装入し、陽イオン交換膜(4)と拡張可能
金属陽極(3)とは該陽極のバネを調節して両者は密着
して構成されている。
For example, 10 rod-shaped spacers (19) with a diameter of 2 mm are placed between the finger-shaped cathode (2) and the cation exchange membrane (4).
The cation exchange membrane (4) and the expandable metal anode (3) are inserted at intervals of 0 mm, and the springs of the anodes are adjusted so that they are in close contact with each other.

上記電解槽を用いて塩化ナトリウム水溶液を電解する方
法について述べると、塩化ナトリウム水溶液は陽極液入
り口(5)より供給され、拡張可能金属陽極(3)によ
り電気分解されて発生する塩素ガスは陽極ガス出口(7
)より取り出される。一方、電気分解された淡塩水は陽
極液出口(6)より取り出される。他方、陰極液入り口
(9)を通じて水又は希薄苛性ソーダ水溶液が陰極室(
18)に導入され、フィンガー状陰極(2)により電気
分解され、水素ガスが発生する。発生した水素ガスは陰
極ガス出口(11)より排出され、一方、濃苛性ソーダ
は陰極液出口(10)より取り出される。
Describing the method of electrolyzing a sodium chloride aqueous solution using the above electrolytic cell, the sodium chloride aqueous solution is supplied from the anolyte inlet (5), and the chlorine gas generated by electrolysis by the expandable metal anode (3) is the anode gas. Exit (7
). On the other hand, the electrolyzed fresh salt water is taken out from the anolyte outlet (6). On the other hand, water or dilute aqueous caustic soda solution enters the cathode chamber (9) through the catholyte inlet (9).
18) and is electrolyzed by the finger-shaped cathode (2) to generate hydrogen gas. The generated hydrogen gas is discharged from the cathode gas outlet (11), while concentrated caustic soda is taken out from the catholyte outlet (10).

本発明の特徴は、フィンガー型電解槽に陽イオン交換膜
を装着し、陽イオン交換膜と陰極間にはスペーサーを介
装せしめ、且つ陽イオン交換膜と陽極とは該陽極のバネ
の反発力を利用して密着した構造とすることにより、高
純度の製品を低いセル電圧及び低電力で得られる新規電
解槽を提供することにある。かくして、フィンガー型電
解槽の構造により、陽イオン交換膜の装着の方法、電解
液の入り口、出口の位置等多くの変形が可能であり、本
発明の精神、原理を逸脱しない限り本発明の範囲に含ま
れる。
The present invention is characterized in that a cation exchange membrane is attached to a finger-type electrolytic cell, a spacer is interposed between the cation exchange membrane and the cathode, and the cation exchange membrane and the anode are connected to each other by the repulsive force of the spring of the anode. The object of the present invention is to provide a new electrolytic cell that can produce high-purity products with low cell voltage and low power by forming a close-contact structure using the following methods. Thus, depending on the structure of the finger-type electrolytic cell, many modifications such as the method of mounting the cation exchange membrane, the position of the inlet and outlet of the electrolyte, etc. are possible, and the scope of the present invention does not depart from the spirit and principle of the present invention. include.

叙上の通り、本発明は、 (1)フィンガー型電解槽をスクラップ化することなく
陽イオン交換膜電解槽に転換できる、(2)低いセル電
圧で高品質の製品かえられる、(3)濃縮の割合が少な
くてすむから蒸気費を節約でき、省エネに奉仕する、 (4)アスベスト公害という労働環境上の問題が皆無で
ある、 等の利点を有し、その実用性は頗る大である。
As mentioned above, the present invention has the following advantages: (1) It is possible to convert a finger-type electrolytic cell to a cation exchange membrane electrolytic cell without scrapping it, (2) it is possible to replace high-quality products with a low cell voltage, and (3) it is possible to concentrate. It has the following advantages: (4) There are no problems with the working environment such as asbestos pollution, and its practicality is extremely high.

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

第1図は本発明電解槽の実施態様を示す概略断面図であ
る。 (1)・・・セルカバー (2) ・・・フィンガー状陰極 (3)・・・拡張可能金属陽極 (4)・・・陽イオン交換膜 (5)・・・陽極液入り口 (6) ・・・陽極液出口 (7)・・・陽極ガス出口 (8)・・・陰極ボックス (9)・・・陰極液入り口 (10)・・陰極液出口 (11)・・陰極ガス出口 (12)・・底板 (13)・・ゴム製ブランケット (14)・・陽イオン交換膜取りつけ枠(15)・・押
さえ板 (16)・・パツキン (17)・・陽極室 (18)・・陰極室 (19)・・スペーサー
FIG. 1 is a schematic sectional view showing an embodiment of the electrolytic cell of the present invention. (1)... Cell cover (2)... Finger-shaped cathode (3)... Expandable metal anode (4)... Cation exchange membrane (5)... Anolyte inlet (6) ...Anolyte outlet (7)...Anode gas outlet (8)...Cathode box (9)...Catholyte inlet (10)...Catholyte outlet (11)...Cathode gas outlet (12)・・Bottom plate (13)・・Rubber blanket (14)・・Cation exchange membrane mounting frame (15)・・Press plate (16)・・Packing (17)・・Anode chamber (18)・・Cathode chamber ( 19) Spacer

Claims (1)

【特許請求の範囲】[Claims] 1、平行列垂直に設)すられたフィンガー状陰極と、底
板上に植設された陽極とを備えたフィンガー型電解槽に
おいて、前記陰極と陽極との間に陽イオン交換膜が装着
され、該陰極と陽イオン交換膜との間にスペーサーが介
装され、且つ該陽イオン交換膜と陽極とは該陽極のバネ
により密着した構造からなることを特徴とする陽イオン
交換膜電解槽。
1. In a finger-type electrolytic cell equipped with finger-shaped cathodes arranged vertically in parallel rows and an anode implanted on a bottom plate, a cation exchange membrane is installed between the cathode and the anode, A cation exchange membrane electrolytic cell characterized in that a spacer is interposed between the cathode and the cation exchange membrane, and the cation exchange membrane and the anode are closely attached by a spring of the anode.
JP58178916A 1983-09-26 1983-09-26 Electrolytic cell provided with cation exchange membrane Granted JPS60211090A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58178916A JPS60211090A (en) 1983-09-26 1983-09-26 Electrolytic cell provided with cation exchange membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58178916A JPS60211090A (en) 1983-09-26 1983-09-26 Electrolytic cell provided with cation exchange membrane

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP11410777A Division JPS5447877A (en) 1977-09-22 1977-09-22 Electrolyzing method for alkali metal chloride

Publications (2)

Publication Number Publication Date
JPS60211090A true JPS60211090A (en) 1985-10-23
JPS6135278B2 JPS6135278B2 (en) 1986-08-12

Family

ID=16056894

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58178916A Granted JPS60211090A (en) 1983-09-26 1983-09-26 Electrolytic cell provided with cation exchange membrane

Country Status (1)

Country Link
JP (1) JPS60211090A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035031A (en) * 1973-06-27 1975-04-03
JPS50109899A (en) * 1974-02-04 1975-08-29
JPS5211177A (en) * 1975-07-14 1977-01-27 Olin Corp Apparatus and method for fixing diaphragm
JPS5263873A (en) * 1975-11-21 1977-05-26 Asahi Glass Co Ltd Net shape spacer composed of fluoline containing copolymer
JPS5360552U (en) * 1976-10-26 1978-05-23
JPS5447877A (en) * 1977-09-22 1979-04-14 Kanegafuchi Chem Ind Co Ltd Electrolyzing method for alkali metal chloride

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035031A (en) * 1973-06-27 1975-04-03
JPS50109899A (en) * 1974-02-04 1975-08-29
JPS5211177A (en) * 1975-07-14 1977-01-27 Olin Corp Apparatus and method for fixing diaphragm
JPS5263873A (en) * 1975-11-21 1977-05-26 Asahi Glass Co Ltd Net shape spacer composed of fluoline containing copolymer
JPS5360552U (en) * 1976-10-26 1978-05-23
JPS5447877A (en) * 1977-09-22 1979-04-14 Kanegafuchi Chem Ind Co Ltd Electrolyzing method for alkali metal chloride

Also Published As

Publication number Publication date
JPS6135278B2 (en) 1986-08-12

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