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JP2019039033A - Electrolytic cell and electrode plate for electrolytic cell - Google Patents

Electrolytic cell and electrode plate for electrolytic cell Download PDF

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JP2019039033A
JP2019039033A JP2017160725A JP2017160725A JP2019039033A JP 2019039033 A JP2019039033 A JP 2019039033A JP 2017160725 A JP2017160725 A JP 2017160725A JP 2017160725 A JP2017160725 A JP 2017160725A JP 2019039033 A JP2019039033 A JP 2019039033A
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electrode plate
electrode
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electrolysis
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JP6599411B2 (en
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薄井　啓
Hiroshi Usui
啓 薄井
陸 薄井
Riku Usui
陸 薄井
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YUNIFIIDO ENGINEERING KK
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Priority to PCT/JP2018/031450 priority patent/WO2019039607A1/en
Priority to CN201880054390.7A priority patent/CN111032919B/en
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/63—Holders for electrodes; Positioning of the electrodes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/24—Halogens or compounds thereof
    • C25B1/26—Chlorine; Compounds thereof
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C25B15/085—Removing impurities
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/01—Electrolytic cells characterised by shape or form
    • C25B9/015—Cylindrical cells
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/13—Single electrolytic cells with circulation of an electrolyte
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
    • C25B9/23—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

【課題】表面の膜の消耗度にバラツキが生じず、さらに電極の裏面も有効に使われることで電極の費用対効果も高く、また、溶液の流れが均一であるためスルーパスなどによる電解効率の低下を防止でき、さらにまた、次亜塩素酸ナトリウム水溶液の分解防止のために希釈した場合の電流密度が低下にも対応できる電解セルを提供する。【解決手段】複数の、略円形の電極部３を有する電極板２と、電極板２を支持する複数の電極板支持体３とを有する電解セル１であって、電極板支持体５に、電極部３と略同形の断面を有する円筒形状で、水平方向に中心軸を有する貫通孔６が設けられており、電極板２と電極板支持体５が互い違いに、電極板２が電極板支持体５に挟着されるように横置されることで、電極板支持体５の貫通孔６と、それを両側から挟む電極板２とで電解室７が構成され、貫通孔６の側壁下部に原料供給孔９を、貫通孔６の側壁上部に製品排出孔１０を有する。【選択図】図１There is no variation in the degree of wear of the film on the surface, and the back surface of the electrode is used effectively, so that the cost effectiveness of the electrode is high, and since the solution flow is uniform, the electrolytic efficiency due to the through-pass etc. It is possible to provide an electrolysis cell that can prevent a decrease, and can cope with a decrease in current density when diluted to prevent decomposition of a sodium hypochlorite aqueous solution. An electrolysis cell (1) having a plurality of electrode plates (2) having a substantially circular electrode portion (3) and a plurality of electrode plate supports (3) supporting the electrode plate (2), A through-hole 6 having a central shape in the horizontal direction is provided in a cylindrical shape having a substantially the same cross section as the electrode portion 3, the electrode plate 2 and the electrode plate support 5 are alternately arranged, and the electrode plate 2 is supported by the electrode plate By being placed so as to be sandwiched between the body 5, an electrolytic chamber 7 is formed by the through hole 6 of the electrode plate support 5 and the electrode plate 2 sandwiching the electrode plate support 5 from both sides. The raw material supply hole 9 is provided, and the product discharge hole 10 is provided on the upper side wall of the through hole 6. [Selection] Figure 1

Description

本発明は、電解セルおよび電解セル用電極板に関する。   The present invention relates to an electrolytic cell and an electrode plate for an electrolytic cell.

近年、電解水生成装置の電解セルとして、様々なものが開発されている。特許文献１には、陰極と、陰極に対して所定距離を置いて対向配置された陽極と、陰極と陽極の間に設けられた隔膜と、陰極と隔膜との間に設けられ、原水を入口から出口へと流通させる陰極流路とを備え、陰極と陽極間に電圧を印加して電解水を生成する電解水生成装置が開示されている。この装置では、陽極と隔膜の間にそれぞれ接するように原水を通過させる通水性部材を設け、陰極流路を流れる原水の一部を、隔膜を通過させ、さらに通水性部材を通過させて、陽極表面で生成された水素イオンと共に前記原水の一部を系外へと排水させることで、電解電圧を低く抑えると共に排水量を少なくしても所望のｐＨ値とした電解水を効率良く提供することができるとされている。   In recent years, various electrolysis cells for electrolyzed water generators have been developed. Patent Document 1 discloses a cathode, an anode disposed opposite to the cathode at a predetermined distance, a diaphragm provided between the cathode and the anode, and provided between the cathode and the diaphragm. There is disclosed an electrolyzed water generating apparatus that includes a cathode flow channel that circulates from an outlet to an outlet and generates electrolyzed water by applying a voltage between the cathode and the anode. In this apparatus, a water-permeable member that allows the raw water to pass between the anode and the diaphragm is provided, and a part of the raw water that flows through the cathode channel passes through the diaphragm and further passes through the water-permeable member, so that the anode By draining a part of the raw water together with hydrogen ions generated on the surface to the outside of the system, it is possible to efficiently provide electrolyzed water having a desired pH value even if the electrolysis voltage is reduced and the amount of drainage is reduced. It is supposed to be possible.

また、特許文献２には、イオン透過性の隔膜を介して対向配置された１対の電解室と、隔膜を挟んで電解室に設けられた１対の電極とを備え、さらに、電極が隔膜に密着して形成された膜−電極構造体と、電解室の内壁面に設けられ、先端部で膜−電極構造体に圧接する突出部と、電解室の内壁に沿って形成された集電体とを備える電解水生成装置の電解槽が開示されている。この装置では、集電体は蒸着またはメッキにより形成された導電性金属部材層からなり、電解室と隔膜との間に、接続部材として導電性の金属パッキンを備え、さらに、電解室は、膜−電極構造体の両側の互いに対向する位置に突出部を備え、電極は、導電性粉体を含む多孔質体からなることで、膜−電極構造体の電極に対して確実に十分な電力を供給できるとされている。   Further, Patent Document 2 includes a pair of electrolytic chambers disposed opposite to each other with an ion-permeable diaphragm, and a pair of electrodes provided in the electrolytic chamber with the diaphragm interposed therebetween, and the electrodes further include a diaphragm. A membrane-electrode structure formed in close contact with the electrode, a protrusion provided on the inner wall surface of the electrolysis chamber and pressed against the membrane-electrode structure at the tip, and a current collector formed along the inner wall of the electrolysis chamber An electrolyzer of an electrolyzed water generating device comprising a body is disclosed. In this apparatus, the current collector is composed of a conductive metal member layer formed by vapor deposition or plating, and is provided with a conductive metal packing as a connecting member between the electrolytic chamber and the diaphragm. -Protrusions are provided at opposite positions on both sides of the electrode structure, and the electrode is made of a porous body containing conductive powder, so that sufficient power can be reliably supplied to the electrode of the membrane-electrode structure. It can be supplied.

また、特許文献３には、イオン透過性の隔膜を介して対向配置された１対の電解室と、原水供給手段と、隔膜を挟んで各電解室に設けられた１対の電極と、電解水を取り出す電解水取出手段とを備え、隔膜は陰イオン透過膜であり、電極は陰イオン透過膜の両表面に密着して陰イオン透過膜と一体に、かつ陰イオン透過膜の一部を露出させて形成されている電解槽と電解水生成装置が開示されている。この装置では、陰極側の電解室に供給される原水のみが電解質を含み、さらに、電極は、導電性の粉体から形成された多孔質体であるか、メッシュ状または櫛形状に形成されており、電極は、導電性の粉体を含む導電性ペーストを陰イオン透過膜の表面に塗布し、加熱または加圧することにより形成されることで、小型で電解効率に優れ、酸性電解水中の陰イオン濃度を低減できるとされている。   Patent Document 3 discloses a pair of electrolysis chambers arranged opposite to each other with an ion-permeable diaphragm, raw water supply means, a pair of electrodes provided in each electrolysis chamber with the diaphragm interposed therebetween, and electrolysis Electrolyzed water extraction means for extracting water, the diaphragm is an anion permeable membrane, the electrode is in close contact with both surfaces of the anion permeable membrane, and is integral with the anion permeable membrane and a part of the anion permeable membrane. An electrolytic cell and an electrolyzed water generating device formed by being exposed are disclosed. In this apparatus, only the raw water supplied to the electrolysis chamber on the cathode side contains an electrolyte, and the electrode is a porous body formed from conductive powder, or is formed in a mesh shape or a comb shape. The electrode is formed by applying a conductive paste containing conductive powder to the surface of the anion permeable membrane and heating or pressurizing it. It is said that the ion concentration can be reduced.

特開２００７−７５７３０号公報JP 2007-75730 A 特開２００６−１５２３１８号公報JP 2006-152318 A 特開２００５−１４４２４０号公報JP 2005-144240 A

しかし、従来のいずれの電解セルでも、水素ガスの排出がスムーズではない場合、電極板表面が露出し電流密度が低下するという問題点があった。気泡となって電極表面に生成する水素ガスの排出を促すためには、スターラー等による撹拌が有効であるが、それを用いた場合でも水流を平面である電極表面に均一に当てることは難しく、置換率が一定とはならないため電極部位により表面の膜の消耗度にバラツキの生じる可能性が高い。表面の膜は一部でも欠損した場合には、電極ごとの取り換えが余儀なくされる、つまり、部位によっては十分な膜厚があっても使用不可となるため、電極寿命のロスが大きく、電極の費用対効果が低いという問題点があった。   However, in any of the conventional electrolysis cells, when the discharge of hydrogen gas is not smooth, there is a problem that the surface of the electrode plate is exposed and the current density is lowered. Stirring with a stirrer is effective to promote the discharge of hydrogen gas generated on the electrode surface as bubbles, but even when it is used, it is difficult to uniformly apply the water flow to the flat electrode surface, Since the substitution rate is not constant, there is a high possibility that the degree of wear of the surface film varies depending on the electrode site. If even a part of the surface film is missing, it is necessary to replace each electrode.In other words, depending on the part, even if there is a sufficient film thickness, the electrode cannot be used. There was a problem of low cost effectiveness.

また、電極の裏面は電流密度が小さく、ほとんど有効に使われないにも関わらず、耐食性を維持するため、コーティングが必要となる。このため、電極の単位面積当たりの電流密度が低くなり、やはり、電極の費用対効果が低くなるという問題点もあった。   In addition, the back surface of the electrode has a small current density and is hardly used effectively. However, the coating is necessary to maintain the corrosion resistance. For this reason, the current density per unit area of the electrode is lowered, and the cost effectiveness of the electrode is also lowered.

また、従来の電解セルでは、連続的に送液して電解する場合、溶液の流れが均一になり難く、スルーパスなどの要因により電解効率、すなわち変換効率が低下する場合があるという問題点もあった。   In addition, in the conventional electrolytic cell, when electrolyzing by continuously feeding the solution, the flow of the solution is difficult to be uniform, and there is a problem that the electrolytic efficiency, that is, the conversion efficiency may be lowered due to factors such as a through path. It was.

さらにまた、生成した次亜塩素酸ナトリウム水溶液の室温における分解速度が大きく（２４時間で１０％）、実用上保存不可であるため、直ちに分解しない濃度（１０００ｐｐｍ以下）まで希釈するかもしくは５℃以下の低温保存が必要となるが、直ちに分解しない濃度まで希釈した場合には電流密度が低下するという問題点もあった。   Furthermore, since the aqueous sodium hypochlorite aqueous solution produced has a high decomposition rate at room temperature (10% in 24 hours) and cannot be stored practically, it is diluted to a concentration that does not immediately decompose (1000 ppm or less), or 5 ° C. or less. However, there is a problem that the current density decreases when diluted to a concentration that does not immediately decompose.

そこで本発明の目的は、水素ガスの排出がスムーズで、かつ、水流が平面である電極表面に均一に当たるため表面の膜の消耗度にバラツキが生じず、さらに電極の裏面も有効に使われるため電極の費用対効果も高く、また、溶液の流れが均一であるためスルーパスなどによる電解効率の低下を防止でき、さらにまた、次亜塩素酸ナトリウム水溶液の分解防止のために希釈した場合の電流密度の低下にも対応できる電解セルおよびそれに用いられる電解セル用電極板を提供することにある。   Therefore, the object of the present invention is that the discharge of hydrogen gas is smooth and the water flow is uniformly applied to the flat electrode surface, so that the degree of wear of the surface film does not vary, and the back surface of the electrode is also used effectively. The electrode is highly cost-effective, and since the solution flow is uniform, it is possible to prevent a decrease in electrolytic efficiency due to a through-pass, etc. Furthermore, the current density when diluted to prevent decomposition of the sodium hypochlorite aqueous solution It is an object of the present invention to provide an electrolytic cell that can cope with a decrease in the resistance and an electrode plate for an electrolytic cell used therefor.

本発明者らは、上記課題を解決するために鋭意検討した結果、電解セルおよび電解セル用電極板を特定の構造とすることにより、上記課題を解決できることを見出して、本発明を完成するに至った。
すなわち、本発明の電解セルは、複数の、略円形の電極部を有する電極板と、該電極板を支持する複数の電極板支持体とを有する電解セルであって、前記電極板支持体に、前記電極部と略同形の断面を有する円筒形状で、水平方向に中心軸を有する貫通孔が設けられており、前記電極板と前記電極板支持体が互い違いに、前記電極板が前記電極板支持体に挟着されるように横置されることで、前記電極板支持体の前記貫通孔と、それを両側から挟む前記電極板とで電解室が構成され、前記貫通孔の側壁下部に原料供給孔を、前記貫通孔の側壁上部に製品排出孔を有することを特徴とするものである。 As a result of intensive studies to solve the above problems, the present inventors have found that the above problems can be solved by making the electrolytic cell and the electrode plate for an electrolytic cell have a specific structure, thereby completing the present invention. It came.
That is, the electrolysis cell of the present invention is an electrolysis cell having a plurality of electrode plates having a substantially circular electrode portion and a plurality of electrode plate supports that support the electrode plates. A through hole having a central axis in the horizontal direction, the electrode plate and the electrode plate support being staggered, and the electrode plate being the electrode plate By being horizontally placed so as to be sandwiched between the support bodies, an electrolysis chamber is formed by the through holes of the electrode plate support bodies and the electrode plates sandwiching the electrode holes from both sides, and the bottom of the side walls of the through holes. The material supply hole is provided with a product discharge hole in the upper part of the side wall of the through hole.

また、本発明の電解セルは、製品排出孔が、前記貫通孔の前記側壁上部に少なくとも２つ備えられていることが好ましく、次亜塩素酸生成に用いられることが好ましい。   In the electrolysis cell of the present invention, it is preferable that at least two product discharge holes are provided in the upper part of the side wall of the through hole, and it is preferable to be used for hypochlorous acid generation.

また、本発明の電解セル用電極板は、本発明の電解セルに使用される電解セル用電極板であって略円板形状であることを特徴とするものである。   Moreover, the electrode plate for electrolytic cells of this invention is an electrode plate for electrolytic cells used for the electrolytic cell of this invention, Comprising: It is a substantially disc shape, It is characterized by the above-mentioned.

本発明の電解セルおよびそれに用いられる電解セル用電極板によれば、水素ガスの排出がスムーズで、かつ、水流が平面である電極表面に均一に当たるため表面の膜の消耗度にバラツキが生じず、さらに電極の裏面も有効に使われるため電極の費用対効果を高くすることができる。また、溶液の流れが均一であるためスルーパスなどによる電解効率の低下を防止でき、さらにまた、次亜塩素酸ナトリウム水溶液の分解防止のために希釈した場合の電流密度が低下にも対応できる。   According to the electrolysis cell of the present invention and the electrode plate for an electrolysis cell used therefor, the discharge of hydrogen gas is smooth and the water flow is uniformly applied to the flat electrode surface, so that there is no variation in the degree of film consumption on the surface. Furthermore, since the back surface of the electrode is also used effectively, the cost effectiveness of the electrode can be increased. Moreover, since the flow of the solution is uniform, it is possible to prevent a decrease in electrolytic efficiency due to a through-pass or the like, and it is also possible to cope with a decrease in current density when diluted to prevent the decomposition of the sodium hypochlorite aqueous solution.

本発明の一実施形態に係る電解セルの組み立て方を示す説明図である。It is explanatory drawing which shows how to assemble the electrolytic cell which concerns on one Embodiment of this invention. 図１に示す電解セルの組み立て状態を示す斜視図である。It is a perspective view which shows the assembly state of the electrolytic cell shown in FIG. 図１に示す電解セルの電解室の幅方向中央における運転状態を示す正面断面図である。It is front sectional drawing which shows the driving | running state in the center of the width direction of the electrolytic chamber of the electrolytic cell shown in FIG. 図３中のＡ−Ａ´線に沿う断面における電解セルの運転状態を示す部分断面図である。It is a fragmentary sectional view which shows the driving | running state of the electrolysis cell in the cross section which follows the AA 'line in FIG. 本発明の一実施形態に係る電解セルの運転状態を示す説明用模式図である。It is a schematic diagram for description which shows the driving | running state of the electrolytic cell which concerns on one Embodiment of this invention.

以下、本発明の具体的実施形態について詳細に説明する。
図１に示す、本発明の一実施形態に係る電解セル１は、複数の、略円形の電極部３を有する電極板２と、電極板２を支持する複数の電極板支持体５とを有する。電極板支持体５には、電極部３と略同形の断面を有する円筒形状で、水平方向に対称軸を有する貫通孔６が奥行方向に設けられており、電極板２と電極板支持体５が互い違いに、電極板２が電極板支持体５に挟着されるように横置されている。電極板支持体５の貫通孔６と、それを両側から挟む電極板２とで電解室が構成される。貫通孔６の側壁下部には原料供給孔８が、貫通孔６の側壁上部には製品排出孔９が設けられている。 Hereinafter, specific embodiments of the present invention will be described in detail.
An electrolysis cell 1 according to an embodiment of the present invention shown in FIG. 1 includes a plurality of electrode plates 2 having substantially circular electrode portions 3 and a plurality of electrode plate supports 5 that support the electrode plates 2. . The electrode plate support 5 has a cylindrical shape having a cross section substantially the same shape as the electrode portion 3, and a through hole 6 having a symmetrical axis in the horizontal direction is provided in the depth direction. The electrode plate 2 and the electrode plate support 5 Are alternately placed so that the electrode plate 2 is sandwiched between the electrode plate supports 5. An electrolytic chamber is constituted by the through hole 6 of the electrode plate support 5 and the electrode plate 2 sandwiching the through hole 6 from both sides. A raw material supply hole 8 is provided in the lower part of the side wall of the through hole 6, and a product discharge hole 9 is provided in the upper part of the side wall of the through hole 6.

電極板２および電極板支持体５を互い違いに横置する個数は、電解セル１に要求される電解能力や、設置エリアの面積等に応じ任意に選択することができる。   The number of the electrode plates 2 and the electrode plate supports 5 that are alternately disposed can be arbitrarily selected according to the electrolysis ability required for the electrolysis cell 1, the area of the installation area, and the like.

電極板２は、電極部３と端子部４からなり、陽極電極板２ａと陰極電極板２ｂが交互に、かつ、陽極電極板２ａの端子部４の向きと陰極電極板２ｂの端子部４の向きが逆方向となるように設置される。電極板２には、電解セルの電極板に通常使用される材質、例えば表面に膜処理がされたチタンやカーボンを使用することができる。また、電極部３と端子部４を一体成型することで、電極板２の接触抵抗をなくすことができる。   The electrode plate 2 includes an electrode portion 3 and a terminal portion 4, and the anode electrode plate 2a and the cathode electrode plate 2b are alternately arranged, and the direction of the terminal portion 4 of the anode electrode plate 2a and the terminal portion 4 of the cathode electrode plate 2b are Installed in the opposite direction. The electrode plate 2 can be made of a material usually used for an electrode plate of an electrolytic cell, for example, titanium or carbon whose surface is subjected to a film treatment. Moreover, the contact resistance of the electrode plate 2 can be eliminated by integrally molding the electrode portion 3 and the terminal portion 4.

電極支持体５は、耐薬品性の材質であることが好ましい。特に、透明であり、運転状態のモニターが容易な樹脂であるアクリル樹脂であることが好ましい。   The electrode support 5 is preferably made of a chemical resistant material. In particular, an acrylic resin that is transparent and can be easily monitored for operating conditions is preferable.

本発明の電解セル１は、電解室の基本的な構成要素である電極板２および電極支持板５に特殊な材料を用いず、かつ構造も複雑ではないため、製作やメンテナンスにかかるコストを低く抑えることができる。   The electrolysis cell 1 of the present invention uses no special materials for the electrode plate 2 and the electrode support plate 5 which are basic components of the electrolysis chamber, and the structure is not complicated. Can be suppressed.

本発明の電解セル１においては、図３に示すように、電解液は原料供給ヘッダー８から、貫通孔６の側壁下部に連通する原料供給孔９経由で円筒形の電解室７内に導入される。原料供給孔９の径を電解室７の幅（電極板支持体５の奥行方向の幅）に対して小さくし、かつ、原料供給孔９と電解室７の接続点を、図３および４に示すように、電解室７の幅方向における中央部に位置させることで、電極部３表面付近の流速の上昇が抑えられつつ、電解室７の幅方向中央に、電解室７の内壁に沿って流速を有す縦方向の旋回流が発生する。このとき、流速は電解室内に乱流を生じない範囲にとどめる。これにより、本発明の電解セル１においては、局所的に電流密度が上昇または低下することなく、均一な電流密度が得られ、電極部３の消耗の均一化と長寿命化が可能となる。なお、電解室７内における縦方向の旋回流の発生をより促進するため、原料供給孔９は、貫通孔６の側壁下部に少なくとも２つ備えられていることが望ましい。   In the electrolytic cell 1 of the present invention, as shown in FIG. 3, the electrolytic solution is introduced from the raw material supply header 8 into the cylindrical electrolytic chamber 7 via the raw material supply hole 9 communicating with the lower side wall of the through hole 6. The The diameter of the raw material supply hole 9 is made smaller than the width of the electrolysis chamber 7 (the width in the depth direction of the electrode plate support 5), and the connection point between the raw material supply hole 9 and the electrolysis chamber 7 is shown in FIGS. As shown in the figure, by being positioned at the center in the width direction of the electrolysis chamber 7, an increase in the flow velocity near the surface of the electrode portion 3 is suppressed, and in the center in the width direction of the electrolysis chamber 7 along the inner wall of the electrolysis chamber 7. A vertical swirling flow having a flow velocity is generated. At this time, the flow velocity is kept within a range where no turbulent flow is generated in the electrolytic chamber. Thereby, in the electrolytic cell 1 of the present invention, a uniform current density can be obtained without locally increasing or decreasing the current density, and the consumption of the electrode part 3 can be made uniform and the life can be extended. In order to further promote the generation of a vertical swirling flow in the electrolysis chamber 7, it is desirable that at least two raw material supply holes 9 are provided in the lower portion of the side wall of the through hole 6.

また、水素ガスを含む生成物は、貫通孔６の側壁上部に接続する製品排出孔１０経由で弊品ヘッダー１１に排出される。水素ガスは電解室７に発生する縦方向の旋回流に同伴されながら排出されるため、電解室７内で生成する水素ガスが電解質７内に滞留することはなく、電極部３表面の露出や、それに伴う電流密度低下を防止することができる。なお、電解室７内で生成する水素ガスの排出をより促進するため、製品排出孔１０は、貫通孔６の側壁上部に少なくとも２つ備えられていることが望ましい。また、同じ理由から、製品排出孔１０は、排出の方向に向かって上向きに設置されていることが好ましい。   The product containing hydrogen gas is discharged to the defective product header 11 via the product discharge hole 10 connected to the upper portion of the side wall of the through hole 6. Since the hydrogen gas is discharged while being entrained by the vertical swirling flow generated in the electrolysis chamber 7, the hydrogen gas generated in the electrolysis chamber 7 does not stay in the electrolyte 7, and the surface of the electrode 3 is exposed. Therefore, it is possible to prevent a decrease in current density associated therewith. In addition, it is desirable that at least two product discharge holes 10 are provided in the upper part of the side wall of the through hole 6 in order to further promote the discharge of the hydrogen gas generated in the electrolysis chamber 7. For the same reason, it is preferable that the product discharge hole 10 is installed upward in the discharge direction.

以上のように、本発明の電解セル１によれば、電解室７内で生成する水素ガスによる電極部３表面の露出や、それに伴う電流密度低下を防止しつつ、局所的に電流密度が上昇または低下することなく均一な電流密度が得られる。このため、電極部３の消耗が均一になり、長寿命化が可能となり、電極板２の費用対効果が高くなる。さらに、電極板２を電極板支持体５に挟着する際にＯリング１２を使用することで、製作やメンテナンスにかかるコストを低く抑えることができるだけでなく、最も欠損しやすい電極部３端部の表面の膜を、メッキすることなく保護することができ、電極板２の費用対効果をより一層高くすることができる。   As described above, according to the electrolysis cell 1 of the present invention, the current density is locally increased while preventing the surface of the electrode portion 3 from being exposed to the hydrogen gas generated in the electrolysis chamber 7 and the current density decrease accompanying it. Or, a uniform current density can be obtained without lowering. For this reason, the consumption of the electrode part 3 becomes uniform, the life can be extended, and the cost effectiveness of the electrode plate 2 becomes high. Furthermore, by using the O-ring 12 when the electrode plate 2 is clamped to the electrode plate support 5, not only the cost for manufacturing and maintenance can be kept low, but also the end portion of the electrode portion 3 that is most likely to be damaged. The surface film can be protected without plating, and the cost effectiveness of the electrode plate 2 can be further enhanced.

また、本発明の電解セル１においては、１枚の電極板２が、隣り合った電解室７同士で共有されることから、電極部３の裏面も有効に活用されることとなる。これにより電極部３の単位面積当たりの電流密度が高くなり、電極板２の費用対効果がさらに高くなる。１枚の電極板２が、隣り合った電解室７同士で共有されることは、電極板２の集積化による電解セル１の小型化にも寄与する。   In the electrolysis cell 1 of the present invention, since one electrode plate 2 is shared by the adjacent electrolysis chambers 7, the back surface of the electrode part 3 is also effectively used. Thereby, the current density per unit area of the electrode part 3 is increased, and the cost effectiveness of the electrode plate 2 is further increased. The fact that one electrode plate 2 is shared by the adjacent electrolysis chambers 7 contributes to the miniaturization of the electrolysis cell 1 due to the integration of the electrode plates 2.

また、前述の通り、電解室７の幅方向中央に縦方向の旋回流が発生することで、電解液のスルーパスもしくは滞留も防止される。このため、溶液の流れが均一になり、電解質７内の電解効率、すなわち変換効率が、安定、上昇することはもとより、過度の電解並びにそれに起因する温度上昇が防止され、生成した次亜塩素酸ナトリウム水溶液の分解、塩素酸化の防止にもつながることとなる。   In addition, as described above, a vertical swirling flow is generated at the center in the width direction of the electrolysis chamber 7, thereby preventing the electrolyte from passing or staying. For this reason, the flow of the solution becomes uniform, and the electrolytic efficiency in the electrolyte 7, that is, the conversion efficiency is stabilized and increased, as well as excessive electrolysis and the temperature rise caused thereby are prevented, and the generated hypochlorous acid It will also lead to the decomposition of the aqueous sodium solution and the prevention of chlorine oxidation.

前述の通り、生成した次亜塩素酸ナトリウム水溶液の分解を防止するためには、直ちに分解しない濃度まで希釈することも有効であるが、本発明の電解セル１によれば、電極板２同士の距離を最小にすることができることから、この場合の電流密度の低下にも対応することができる。   As described above, in order to prevent decomposition of the generated sodium hypochlorite aqueous solution, it is effective to dilute to a concentration that does not immediately decompose, but according to the electrolytic cell 1 of the present invention, the electrode plates 2 Since the distance can be minimized, it is possible to cope with a decrease in current density in this case.

図５に、本発明の一実施形態に係る電解セルの運転状態を示す説明用模式図を示す。前述の通り、電解液は、原料供給ヘッダー８から、貫通孔６の側壁に連通する原料供給孔９経由で円筒形の電解室７内に導入されて電解に供され、水素ガスを含む生成物は、貫通孔６の側壁に接続する製品排出孔１０経由で製品ヘッダー１１に排出される。また、１枚の陽極電極板２ａは、その両隣の陰極電極板２ｂ１および２ｂ２それぞれと電気回路を形成するため、電解室７ａと７ｂとで共有されることになる。   In FIG. 5, the schematic diagram for description which shows the driving | running state of the electrolytic cell which concerns on one Embodiment of this invention is shown. As described above, the electrolytic solution is introduced from the raw material supply header 8 into the cylindrical electrolytic chamber 7 via the raw material supply hole 9 communicating with the side wall of the through hole 6 and is subjected to electrolysis, and includes a product containing hydrogen gas. Is discharged to the product header 11 via the product discharge hole 10 connected to the side wall of the through hole 6. In addition, one anode electrode plate 2a is shared by the electrolysis chambers 7a and 7b in order to form an electric circuit with each of the adjacent cathode electrode plates 2b1 and 2b2.

ここで、同一の陽極電極板２ａと電気回路を形成する陰極電極板２ｂ１および２ｂ２と、直流電源１３とを結ぶ各の電気回路上の電流確認個所１４にて電流値を確認することで、運転状態や、各電極板２の電極部３の消耗度合をモニターすることができる。   Here, the current value is confirmed at the current confirmation points 14 on each electric circuit connecting the same anode electrode plate 2a, the cathode electrode plates 2b1 and 2b2 forming the electric circuit, and the DC power source 13, so that the operation is performed. The state and the degree of wear of the electrode part 3 of each electrode plate 2 can be monitored.

なお、１枚の電極板２が、隣り合った電解室７同士で共有される本発明の電解セル１においても、電解セル１の両端に設置された陽極電極板２ｃと陰極電極板２ｄについては運転中に裏面を有効活用することは難しい。しかし、陽極電極板２ｃと陰極電極板２ｄの表面が消耗した際には、裏返して裏面を使用することで各電極板２の費用対効果を高くすることができる。   In the electrolysis cell 1 of the present invention in which one electrode plate 2 is shared between adjacent electrolysis chambers 7, the anode electrode plate 2c and the cathode electrode plate 2d installed at both ends of the electrolysis cell 1 are also described. It is difficult to make effective use of the back side while driving. However, when the surfaces of the anode electrode plate 2c and the cathode electrode plate 2d are consumed, the cost effectiveness of each electrode plate 2 can be increased by turning over and using the back surface.

本発明の電解セル１は、あらゆる電気分解に使用することができるが、電解水の製造に用いられることが好ましく、次亜塩素酸の製造に用いられることが特に好ましい。   The electrolytic cell 1 of the present invention can be used for any electrolysis, but is preferably used for the production of electrolyzed water, and particularly preferably used for the production of hypochlorous acid.

以上のとおり、本発明の電解セル１によれば、スムーズな水素ガスの排出と均一な電流密度による電極部３の長寿命化と、電極部３の裏面の有効活用化により、電極板２の費用対効果の向上と電極板２の集積化による小型化が可能になる。また、本発明の電解セル１によれば、電解液のスルーパスや滞留も防止できることから電解効率、すなわち変換効率の、安定、上昇はもとより、生成した次亜塩素酸ナトリウム水溶液の品質の安定化も図ることができる。   As described above, according to the electrolysis cell 1 of the present invention, the electrode plate 2 can be formed by smoothly discharging the hydrogen gas, extending the life of the electrode unit 3 by uniform current density, and effectively utilizing the back surface of the electrode unit 3. It is possible to reduce the size by improving cost effectiveness and integrating the electrode plate 2. In addition, according to the electrolytic cell 1 of the present invention, it is possible to prevent the electrolyte from passing or staying, so that the electrolytic efficiency, that is, the conversion efficiency is stabilized and increased, and the quality of the generated sodium hypochlorite aqueous solution is stabilized. Can be planned.

本発明の電解セル１は、電極板２と電極板支持体５が互い違いに、電極板２が電極板支持体５に挟着されるように横置されることで、電極板支持体５の貫通孔６と、それを両側から挟む電極板２とで電解室７が構成されるが、同じように電極板２と電極板支持体５を使用しながら、図１において、２ｂの電極の位置に例えばセラミックス製の隔膜や、イオン交換膜を設置し、これを挟む２ａの電極の位置に陽極電極板２ａと陰極電極板２ｂを設置し、これを繰り返し横置する構成とすることにより、隔膜法や、イオン交換膜法の電解セルに応用することもできる。ただし、この場合、原料および製品が、陽極電解室、陰極電解室で異なってくるため、例えば、原料供給ヘッダー８および製品排出ヘッダー１１それぞれを、陽極電解室用、陰極電解室用に区分けして設ける構造に変更する必要がある。   In the electrolytic cell 1 of the present invention, the electrode plate 2 and the electrode plate support 5 are alternately placed side by side so that the electrode plate 2 is sandwiched between the electrode plate support 5. Although the electrolytic chamber 7 is constituted by the through hole 6 and the electrode plate 2 sandwiching it from both sides, the position of the electrode 2b in FIG. 1 is used while using the electrode plate 2 and the electrode plate support 5 in the same manner. For example, a diaphragm made of ceramics or an ion exchange membrane is installed, and an anode electrode plate 2a and a cathode electrode plate 2b are installed at the position of the electrode 2a sandwiching the membrane, and the diaphragm is repeatedly placed horizontally. The present invention can also be applied to electrolytic cells using the ion exchange membrane method. However, in this case, since the raw materials and products are different in the anode electrolysis chamber and the cathode electrolysis chamber, for example, the raw material supply header 8 and the product discharge header 11 are divided into the anode electrolysis chamber and the cathode electrolysis chamber, respectively. It is necessary to change the structure to be provided.

１ 電解セル
２ 電極板
２ａ、２ｃ 陽極電極板
２ｂ、２ｂ１、２ｂ２、２ｄ 陰極電極板
３ 電極部
４ 端子部
５ 電極板支持体
６ 貫通孔
７、７ａ、７ｂ 電解室
８ 原料供給ヘッダー
９ 原料供給孔
１０ 製品排出孔
１１ 製品排出ヘッダー
１２ Ｏリング
１３ 直流電源
１４ 電流確認個所
DESCRIPTION OF SYMBOLS 1 Electrolysis cell 2 Electrode plate 2a, 2c Anode electrode plate 2b, 2b1, 2b2, 2d Cathode electrode plate 3 Electrode part 4 Terminal part 5 Electrode plate support body 6 Through-hole 7, 7a, 7b Electrolytic chamber 8 Raw material supply header 9 Raw material supply Hole 10 Product discharge hole 11 Product discharge header 12 O-ring 13 DC power supply 14 Current confirmation point

Claims (4)

複数の、略円形の電極部を有する電極板と、該電極板を支持する複数の電極板支持体とを有する電解セルであって、
前記電極板支持体に、前記電極部と略同形の断面を有する円筒形状で、水平方向に中心軸を有する貫通孔が設けられており、
前記電極板と前記電極板支持体が互い違いに、前記電極板が前記電極板支持体に挟着されるように横置されることで、前記電極板支持体の前記貫通孔と、それを両側から挟む前記電極板とで電解室が構成され、
前記貫通孔の側壁下部に原料供給孔を、前記貫通孔の側壁上部に製品排出孔を有することを特徴とする電解セル。 An electrolysis cell having a plurality of electrode plates having a substantially circular electrode portion and a plurality of electrode plate supports for supporting the electrode plates,
The electrode plate support is provided with a through hole having a central axis in the horizontal direction in a cylindrical shape having a cross section substantially the same shape as the electrode portion,
The electrode plate and the electrode plate support are alternately placed side by side so that the electrode plate is sandwiched between the electrode plate support, and the through holes of the electrode plate support are arranged on both sides. An electrolysis chamber is configured with the electrode plate sandwiched between
An electrolytic cell having a material supply hole at a lower portion of a side wall of the through hole and a product discharge hole at an upper portion of the side wall of the through hole. 前記製品排出孔が、前記貫通孔の前記側壁上部に少なくとも２つ備えられている請求項１に記載の電解セル。   The electrolytic cell according to claim 1, wherein at least two product discharge holes are provided in the upper part of the side wall of the through hole. 次亜塩素酸生成に用いられる請求項１または２に記載の電解セル。   The electrolysis cell according to claim 1 or 2 used for hypochlorous acid production. 請求項１〜３のいずれか一項に記載の電解セルに使用される電解セル用電極板であって、略円板形状であることを特徴とする電解セル用電極板。
It is an electrode plate for electrolytic cells used for the electrolytic cell as described in any one of Claims 1-3, Comprising: It is a substantially disc shape, The electrode plate for electrolytic cells characterized by the above-mentioned.
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