JPS62182293A - Method for electrolyzing seawater - Google Patents
Method for electrolyzing seawaterInfo
- Publication number
- JPS62182293A JPS62182293A JP61023189A JP2318986A JPS62182293A JP S62182293 A JPS62182293 A JP S62182293A JP 61023189 A JP61023189 A JP 61023189A JP 2318986 A JP2318986 A JP 2318986A JP S62182293 A JPS62182293 A JP S62182293A
- Authority
- JP
- Japan
- Prior art keywords
- seawater
- cell
- product
- magnesium hydroxide
- 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
- 239000013535 sea water Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims abstract description 8
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims abstract description 8
- 239000000347 magnesium hydroxide Substances 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000006227 byproduct Substances 0.000 claims abstract 3
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims abstract 3
- 230000008021 deposition Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 238000005868 electrolysis reaction Methods 0.000 description 6
- 230000001052 transient effect Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- XTEGARKTQYYJKE-UHFFFAOYSA-N chloric acid Chemical compound OCl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-N 0.000 description 1
- 229940005991 chloric acid Drugs 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は海洋生物付着防止装置（ＭＧＰ３）による海水
の電解方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a seawater electrolysis method using a marine biofouling prevention device (MGP3).
従来の海水の電気分解は第２図に示す一過方式によりな
されている。Conventional electrolysis of seawater is carried out by the transient method shown in FIG.
海水等の電気分解に尚って、水酸化マグネシウム含有固
形物が陰極ある（・は陰極近傍に著しく付着堆積して電
解効率を低下させることは既知の問題点であり、これを
解決するために電解槽や電極の構造を改善する方法、電
解槽内における被電解水の流速を上げる方法、電解槽内
の流速分布を均一にして流れが停滞する個所をなくす方
法等、各種の改善方法がなされている。In the electrolysis of seawater, etc., it is a known problem that solids containing magnesium hydroxide accumulate significantly near the cathode, reducing electrolytic efficiency. Various improvement methods have been made, including methods to improve the structure of the electrolytic cell and electrodes, methods to increase the flow rate of electrolyzed water in the electrolytic cell, and methods to make the flow velocity distribution uniform in the electrolytic cell and eliminate areas where the flow stagnates. ing.
しかし、従来の方法では水酸化マグネシウム含有固形物
の付着速度が速いため、電解効率の低下や、電解電圧の
上昇か早期に発生し、そのため、電解電極寿命の短縮や
水酸化マグネンウム含有固形物除去のための酸洗浄回数
の増加を招いている。However, in the conventional method, solids containing magnesium hydroxide adhere at a fast rate, resulting in a decrease in electrolytic efficiency and an early rise in electrolytic voltage, which shortens the life of the electrolytic electrode and removes solids containing magnesium hydroxide. This has led to an increase in the number of acid washes required.
本発明は上記問題点を解消することを目的とする。The present invention aims to solve the above problems.
このため本発明は、電解槽流出水の一部を循環して電解
槽流入原水の欠伸塩素酸濃度を１０００グ／ｅ以上に調
整することを特徴とする特１、作用〕
本発明方法においては、電解した′海水の一部を循環さ
せることによって、循環水に含まれる水酸化マグネ／ラ
ムか種晶として働くため、電解槽内面に付着する水酸化
マグネンウムスケールの発生を抑制する。For this reason, the present invention is characterized in that part of the electrolytic cell outflow water is circulated to adjust the vacated chloric acid concentration of the electrolytic cell inflow raw water to 1000 g/e or more.] In the method of the present invention, By circulating a portion of the electrolyzed seawater, the magnesium hydroxide/ram contained in the circulating water acts as a seed crystal, thereby suppressing the formation of magnesium hydroxide scale that adheres to the inner surface of the electrolytic cell.
次に本発明方法を実施例を参照して詳細に説明する。 Next, the method of the present invention will be explained in detail with reference to Examples.
次の電解条件で従来の一過方式と本発明の循環方式につ
いてスケール付着量の比較試験を行った。A comparative test of scale adhesion was conducted under the following electrolytic conditions between the conventional transient method and the circulation method of the present invention.
第２表 ６０間の電解後のスケール何首試験結果〔発明
の効果〕
以上のように、本発明方法によれば、電解槽流出水の一
部を循環して電解槽流入原水の次亜塩素酸濃度を１００
０■／ｅ以上に調整することによりスケール付着量を従
来の一過式に比して約５０係と低くすることかできる。Table 2 Scale test results after 60-hour electrolysis [Effects of the invention] As described above, according to the method of the present invention, a part of the electrolytic cell outflow water is circulated and the hypochlorite of the electrolytic cell inflow raw water is acid concentration to 100
By adjusting the amount to 0/e or more, the amount of scale adhesion can be lowered to about 50 parts compared to the conventional one-time type.
第１図は本発明の循環方式による海水の電気分解法を示
す説明図、第２図は従来の一過方式による海水の電気分
解法を示す説明図である。
１・・・電解槽、２・・海水ポンプ、３・・・循環ポン
プ、４・・・海水、５・・・海水ポンプ出口水、６・・
・電解水、７・・・電解槽流入原水。FIG. 1 is an explanatory diagram showing a seawater electrolysis method using the circulation method of the present invention, and FIG. 2 is an explanatory diagram showing a seawater electrolysis method using a conventional transient method. 1... Electrolytic cell, 2... Seawater pump, 3... Circulation pump, 4... Seawater, 5... Seawater pump outlet water, 6...
- Electrolyzed water, 7...Raw water flowing into the electrolytic tank.
Claims (1)
生する水酸化マグネシウム含有固形物の陰極あるいは陰
極近傍部への付着を防止するため、電解槽流出水の一部
を循環して電解槽流入原水の次亜塩素酸濃度を１０００
ｍｇ／ｌ以上に調整することを特徴とする海水の電解方
法。When producing hypochlorite by electrolyzing seawater, a portion of the water flowing out of the electrolytic tank is circulated to prevent solids containing magnesium hydroxide, which are produced as a by-product, from adhering to the cathode or the vicinity of the cathode. The concentration of hypochlorous acid in the raw water flowing into the electrolyzer was reduced to 1000.
A method for electrolyzing seawater, characterized by adjusting the concentration to mg/l or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61023189A JPS62182293A (en) | 1986-02-05 | 1986-02-05 | Method for electrolyzing seawater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61023189A JPS62182293A (en) | 1986-02-05 | 1986-02-05 | Method for electrolyzing seawater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62182293A true JPS62182293A (en) | 1987-08-10 |
Family
ID=12103709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61023189A Pending JPS62182293A (en) | 1986-02-05 | 1986-02-05 | Method for electrolyzing seawater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62182293A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2365023A (en) * | 2000-07-18 | 2002-02-13 | Ionex Ltd | Increasing the surface area of an electrode |
| JP2015172251A (en) * | 2015-05-20 | 2015-10-01 | 三菱重工環境・化学エンジニアリング株式会社 | Seawater electrolysis system and seawater electrolysis method |
-
1986
- 1986-02-05 JP JP61023189A patent/JPS62182293A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2365023A (en) * | 2000-07-18 | 2002-02-13 | Ionex Ltd | Increasing the surface area of an electrode |
| GB2365023B (en) * | 2000-07-18 | 2002-08-21 | Ionex Ltd | A process for improving an electrode |
| JP2015172251A (en) * | 2015-05-20 | 2015-10-01 | 三菱重工環境・化学エンジニアリング株式会社 | Seawater electrolysis system and seawater electrolysis method |
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