WO2022269945A1 - Device for producing alkaline electrolyzed water, method for purifying electrolysis tank of same, and electrolysis tank purification control structure - Google Patents

Device for producing alkaline electrolyzed water, method for purifying electrolysis tank of same, and electrolysis tank purification control structure Download PDF

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Publication number
WO2022269945A1
WO2022269945A1 PCT/JP2021/043505 JP2021043505W WO2022269945A1 WO 2022269945 A1 WO2022269945 A1 WO 2022269945A1 JP 2021043505 W JP2021043505 W JP 2021043505W WO 2022269945 A1 WO2022269945 A1 WO 2022269945A1
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Prior art keywords
cleaning
electrolyzed water
alkaline electrolyzed
diaphragm
electrolytic cell
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PCT/JP2021/043505
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French (fr)
Japanese (ja)
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伸一 類家
千尋 佐々木
大生 春日
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アールテック株式会社
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Publication of WO2022269945A1 publication Critical patent/WO2022269945A1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • 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

Definitions

  • the present invention relates to an alkaline electrolyzed water production apparatus, an electrolytic cell cleaning method thereof, and an electrolytic cell cleaning control structure, and more particularly to a technology capable of stabilizing the quality of supplied alkaline electrolyzed water and reducing running costs.
  • the alkaline electrolyzed water production device is a device that produces alkaline electrolyzed water by adding an electrolysis aid to raw water such as tap water and electrolyzing it. Specifically, it is a configuration comprising an electrolytic cell, a diaphragm arranged in the electrolytic cell, and positive and negative electrodes arranged with the diaphragm interposed therebetween. Electrolysis produces alkaline electrolyzed water on the cathode side and acidic electrolyzed water on the anode side. Since the pH of the generated alkaline electrolyzed water is as high as about 13, it is excellent in the effect of suppressing bacterial growth and the cleaning effect of the contained NaOH and the like.
  • agricultural field pH adjustment, water quality improvement
  • livestock field cleaning, sterilization, deodorant
  • food processing field cleaning, sterilization, deodorant
  • industrial field degreasing, precision cleaning
  • environmental field water treatment, soot treatment
  • the acidic electrolyzed water which is produced as a byproduct at the same time as the production of the intended alkaline electrolyzed water, can be circulated and reused without being discarded.
  • Patent Document 1 As a device for generating electrolyzed water used for cleaning metal impurities, particles, and corrosive residual gas components in the semiconductor manufacturing process, the distance between the electrodes or the surface area of the electrodes is variable, and ion exchange is used as a diaphragm material.
  • a configuration is disclosed that uses a membrane and a gas-permeable membrane, has a temperature control mechanism during electrolysis and cleaning, has a variable pressure electrolytic bath, and further has an ultrasonic oscillation mechanism and a magnetic field generation mechanism. This is said to increase the efficiency of electrolysis and the efficiency of generating electrolyzed water.
  • the type of electrolytic cell configured by connecting two or more stages of electrolytic cells having the above-mentioned diaphragms is hereinafter referred to as a multi-layer diaphragm-type electrolytic cell.
  • a multi-layer diaphragm-type electrolytic cell it is possible to increase the capacity for producing alkaline electrolyzed water and to increase the operation for a long period of time.
  • due to the narrow gap between the electrode and the diaphragm when voltage is applied with the anode and cathode reversed in phase, depending on the properties of the raw water, calcium scale and magnesium scale adhere to the electrode, covering the anode and cathode coatings of iridium, etc. do.
  • this conductive scale degrades the quality of the electrolyzed water or enlarges to such an extent that it comes into contact with the cation exchange membrane, it may cause electrolytic corrosion of the diaphragm. This causes diaphragm pinholes and electrode coating damage. Diaphragm pinholes and breakage of the coating of the electrodes may cause the quality of the electrolyzed water to be unstable, and may even cause the equipment to malfunction. A solution to this problem is desired.
  • the problem to be solved by the present invention is to eliminate the problems of the conventional technology, and even in a manufacturing method using a multi-layer diaphragm electrolytic cell, when a voltage is applied with the anode and cathode reversed in phase, the conductive scale It is possible to prevent the occurrence of electrolytic corrosion in the diaphragm caused by , to provide an alkaline electrolyzed water production apparatus and the like.
  • the inventors of the present application have found that a control unit is provided for cleaning and removing scale generated in the diaphragm electrolytic bath, that cleaning and reverse-phase voltage loading are performed alternately in the cleaning process, and that reverse-phase voltage loading is performed alternately.
  • the present inventors have found that the problem can be solved by stepwise boosting when the phase voltage is loaded, and have completed the present invention based on this finding. That is, the inventions claimed in the present application, or at least the inventions disclosed as means for solving the above problems, are as follows.
  • An alkaline electrolyzed water producing apparatus comprising a multi-layered diaphragm-type electrolyzer consisting of two or more stages of diaphragm-typed electrolyzers, and a controller for controlling the cleaning of the multi-layered diaphragm-type electrolyzer.
  • the diaphragm-equipped electrolytic cell comprises an anode chamber having an anode for circulating an aqueous electrolyte solution, a cathode chamber having a cathode for circulating raw water of the alkaline electrolyzed water to be produced, and the anode chamber and the cathode chamber.
  • An apparatus for producing alkaline electrolyzed water characterized by: ⁇ A>
  • one cycle is the process of cleaning the inside of the cathode chamber and the process of applying the negative-phase voltage after the cleaning process, and this cycle is repeated two or more times.
  • a pre-cleaning process which is a preliminary cleaning process for the inside of the cathode chamber, a subsequent reverse-phase voltage application process, a subsequent re-cleaning process, which is a cleaning process for the inside of the cathode chamber, followed by a reverse-phase voltage [3] Any of [1] and [2], wherein the voltage is stepped up in the step of applying the negative-sequence voltage in the cleaning step.
  • the alkaline electrolyzed water production apparatus according to any one of the above. [4] [1], [2], and [1], [2], and [1], [2], [ 3].
  • [5] The alkaline electrolyzed water production apparatus according to [4], characterized by having a display unit for indicating the cleaning effect evaluation result in the evaluation process.
  • [6] The alkaline electrolyzed water according to any one of [4] and [5], wherein the alkaline electrolyzed water is produced after a predetermined cleaning effect is confirmed in the evaluation process.
  • [7] A method for cleaning an electrolytic cell in an alkaline electrolyzed water production apparatus according to any one of [1], [2], [3], [4], [5], and [6], wherein the diaphragm electrolysis is performed.
  • a method for cleaning an electrolytic cell of an alkaline electrolyzed water production apparatus characterized by performing a cleaning treatment step shown in ⁇ A> below for cleaning and removing scale generated in the cell.
  • one cycle is the process of cleaning the inside of the cathode chamber and the process of applying the negative-phase voltage after the cleaning process, and this cycle is repeated two or more times.
  • An anode chamber having an anode for circulating an aqueous electrolyte solution, a cathode chamber having a cathode for circulating the raw water of the alkaline electrolyzed water to be produced, and an anode chamber and a cathode chamber sandwiched between the anode chamber and the cathode chamber.
  • ⁇ A> In the cleaning process, one cycle is the process of cleaning the inside of the cathode chamber and the process of applying the negative-phase voltage after the cleaning process, and this cycle is repeated two or more times.
  • the apparatus for producing alkaline electrolyzed water, the method for cleaning the electrolytic cell thereof, and the structure for controlling cleaning of the electrolytic cell of the present invention are configured as described above. It is possible to effectively prevent the occurrence of electrical corrosion in the diaphragm due to conductive scale when a voltage is applied with the opposite phase of the cathode and the cathode. It is possible to effectively stabilize the quality of electrolyzed water to be produced, and to effectively prevent failure of the device.
  • the quality of the produced alkaline electrolyzed water can be stabilized favorably, so that the use and spread of electrolyzed water can be promoted especially in industrial fields where quality stability of electrolyzed water is emphasized.
  • Soft water can be easily used in Japan as the raw water supplied to the alkaline electrolyzed water production equipment.
  • Japan there are quite a few countries overseas that have a lot of hard water with a high content of Mg, Ca, and the like.
  • the apparatus of the present invention for example, even water with an excessive amount of Mg or Ca can be satisfactorily treated, and a wide range of water qualities can be handled as raw water. Therefore, the use of the apparatus of the present invention can be expected to expand even in overseas markets where there is a lot of hard water.
  • the quality stability, running cost reduction, and longevity of the apparatus contribute to pH adjustment and water quality in the agricultural field.
  • Use for improvement, use for cleaning, sterilization, deodorization, etc. in the livestock field, use for cleaning, sterilization, deodorization, etc. in the food processing field, use for degreasing and precision cleaning in the industrial field, environmental field It is possible to expand or introduce the use of alkaline electrolyzed water more than before in the use for water treatment, soot treatment, etc., and in the use over a wide range of industrial fields such as the restaurant industry and the cleaning industry.
  • FIG. 1 is a conceptual diagram showing a basic configuration of an alkaline electrolyzed water producing apparatus of the present invention
  • FIG. FIG. 2 is a flow chart showing the action of a control unit in the alkaline electrolyzed water producing apparatus of the present invention shown in FIG. 1
  • FIG. 2 is a flow chart showing an example in which a two-cycle cleaning treatment process is performed in the alkaline electrolyzed water producing apparatus of the present invention shown in FIG. 1
  • FIG. 4 is a flow diagram showing a cleaning process step with an evaluation process
  • 1 is a conceptual diagram showing a basic configuration of an alkaline electrolyzed water producing apparatus of the present invention provided with a display section
  • FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG.
  • FIG. 1 is an explanatory view showing the configuration of an alkaline electrolyzed water producing apparatus according to an embodiment of the present invention, centering on the configuration of a multi-layer diaphragm electrolytic cell;
  • FIG. 3 is a block diagram showing the control structure of the alkaline electrolyzed water producing apparatus of the embodiment; It is a control flow chart of an example alkaline electrolyzed water production apparatus.
  • FIG. 1 is a conceptual diagram showing the basic configuration of the alkaline electrolyzed water producing apparatus of the present invention.
  • FIG. 1-2 is a flow chart showing the action of the controller in the alkaline electrolyzed water producing apparatus of the present invention shown in FIG.
  • the present alkaline electrolyzed water production apparatus 10 includes a multi-layered diaphragm-equipped electrolytic cell 7 in which two or more stages of diaphragm-equipped electrolytic cells 1, 1, . . .
  • the diaphragm electrolytic cell 1 has an anode chamber 3 having an anode 2 and for circulating an aqueous electrolyte solution, and a cathode 4.
  • the main configuration is that the controller 8 performs a cleaning treatment step P10 shown in ⁇ A> below for cleaning and removing generated scale.
  • ⁇ A> In the cleaning process P10, one cycle is the cleaning process P1 in the cathode chamber 5 and the reverse-phase voltage loading process P2 after the cleaning process P1.
  • n in FIGS. 1-2 is a natural number of 2 or more.
  • the scale generated in the diaphragm electrolytic bath 1 is washed and removed. That is, the inside of the cathode chamber 5 is cleaned in the cleaning process P1, and then the voltage is applied with the polarities of the anode 2 and the cathode 4 reversed in the reverse phase voltage application process P2.
  • the cleaning process P10 two or more cycles are performed, with this cleaning process P1-reversed-phase voltage application process P2 as one cycle.
  • FIG. 2 is a flow diagram showing an example in which the alkaline electrolyzed water producing apparatus of the present invention shown in FIG. 1 performs a two-cycle cleaning process.
  • the present alkaline electrolyzed water producing apparatus 10 can be configured such that the cycle of the cleaning process and the reverse phase voltage application process shown in FIG. 1-2 is performed twice. Even if three cycles or more are not performed, it is a structure in which a sufficient cleaning effect is obtained in two cycles.
  • a pre-cleaning process P11 which is a preliminary cleaning process for the inside of the cathode chamber 5
  • a reverse phase voltage loading process P12 which follows
  • a re-cleaning process P21 which is a cleaning process for the inside of the cathode chamber 5 after that
  • the re-negative-phase voltage load process P22 which is the subsequent negative-phase voltage load process, is performed in order
  • the cleaning process--negative-phase voltage load process> is two cycles, a total of four processes in the cleaning process P210.
  • the interior of the cathode chamber 5 is first preliminarily cleaned in the preliminary cleaning step P11, and then the reverse phase voltage loading step P12 is performed in which voltage is applied while the polarities of the anode 2 and the cathode 4 are reversed.
  • a cleaning process (re-cleaning process P21) in the cathode chamber 5 is performed again, and finally a reverse-phase voltage application process (re-negative-phase voltage application process P22) is performed again.
  • the four-step cleaning process P210 sufficiently cleans and removes the scale, which is the root cause of the electrolytic corrosion phenomenon of the diaphragm, the occurrence of pinholes, and the peeling of the electrode coating, and stabilizes the quality of the generated electrolyzed water. Failure is prevented.
  • the voltage can be stepped up.
  • the voltage is stepped up at DC 10 VA for 1 minute, then at DC 20 VA for 1 minute, further at DC 28 VA for 1 minute, and the like.
  • problems caused by rapid pressure increase include damage to the diaphragm due to rapid movement of the charged scale between the electrodes, and peeling of the coating metal electrodeposited on the electrodes due to electronic vibration.
  • FIG. 3 is a flow diagram showing a cleaning process with an evaluation process.
  • the alkaline electrolyzed water production apparatus 10 after at least one of the reverse phase voltage loading steps P12, P22, etc. of the cleaning treatment step P310 controlled and executed by the control unit 8, based on electrical detection , evaluation processes P13 and P23 for evaluating the quality of the result of the cleaning process after the preceding process in the cleaning process P310.
  • an electrical detection for example, a DC current value between the cathode 4 and the anode 2 can be used, but it is not limited to this.
  • the evaluation process P13 is performed after the reversed-phase voltage load process P12, or the evaluation process P23 is performed after the reversed-phase voltage load process P22. Based on the positive detection, the quality of the cleaning treatment result after the preceding process is evaluated.
  • the most desirable configuration is one in which both the evaluation steps P13 and P23 are provided and the cleaning effect is evaluated.
  • the figure shows a two-cycle configuration, even in the case of three or more cycles as described with reference to FIG. It is within the scope of the present invention.
  • the quality evaluation of the cleaning treatment result in the evaluation process P13, etc., and the specific pattern of subsequent operation control based on the evaluation can be appropriately designed. For example, setting a threshold value for electrical detection of whether the cleaning effect is good or bad, and as an operation control when the evaluation result is unsatisfactory, it is impossible to remove the scale by cleaning by cleaning treatment, and a command prompting replacement of equipment parts is issued. For example, whether to issue a command to perform the cleaning treatment process.
  • These operational controls can be the functions of the controller 8 in charge, like the control and execution of the cleaning process P310 and the like.
  • FIG. 4 is a conceptual diagram showing the basic configuration of the alkaline electrolyzed water production apparatus of the present invention equipped with a display unit.
  • the alkaline electrolyzed water producing apparatus 410 can be configured to have a display section 49 for displaying the cleaning effect evaluation result in the evaluation process, in addition to the constituent elements described with reference to FIG.
  • a user of the apparatus 410 can know the quality of the washing treatment result for scale removal by the predetermined display displayed on the display unit 49 and can confirm the quality of the state of the apparatus 410 .
  • the display on the display unit 49 may include display of countermeasures such as part replacement and re-cleaning based on the evaluation result.
  • the alkaline electrolyzed water production device 410 can be configured to automatically produce alkaline electrolyzed water after a predetermined cleaning effect is confirmed in the evaluation process P13 or the like.
  • the cleaning treatment process P310 and the like are processes performed to maintain the quality of the produced alkaline electrolyzed water and to maintain the normal state of the apparatus. can be started.
  • Electrolytic bath cleaning methods such as P10 are also within the scope of the present invention.
  • ⁇ A> In the cleaning process P10, etc., one cycle is the cleaning process P1, etc. in the cathode chamber 5, etc. - the negative phase voltage loading process P2, etc. after the cleaning process P1, etc., and this process is performed for two or more cycles.
  • a control structure for cleaning the inside of the multi-layered diaphragm electrolytic tank 7, etc., in the alkaline electrolyzed water production apparatus 10, etc., having any of the configurations described above, is used to wash scale generated in the diaphragm-containing electrolytic tank 1, etc.
  • An electrolytic cell cleaning control structure of an alkaline electrolyzed water producing apparatus, which controls the cleaning process P10 shown in ⁇ A> below for removing, is also within the scope of the present invention.
  • ⁇ A> In the cleaning process P10, etc., one cycle is the cleaning process P1, etc. in the cathode chamber 5, etc. - the negative phase voltage loading process P2, etc. after the cleaning process P1, etc., and this process is performed for two or more cycles.
  • FIG. 5 is an explanatory view showing the configuration of the alkaline electrolyzed water producing apparatus of the embodiment of the present invention, centering on the configuration of the multi-layer type diaphragm electrolytic cell.
  • the alkaline electrolyzed water production apparatus 510 of the present embodiment includes a multi-layered diaphragm-type electrolyzer 57 in which three diaphragm-type electrolyzers 51, 51, 51 are continuously arranged, and cleaning inside the multi-layered diaphragm-type electrolyzer 57.
  • Each diaphragm electrolytic cell 51 has an anode chamber 53 for circulating an aqueous electrolyte solution having an anode 52, and a cathode 54.
  • a cathode chamber 55 for circulating the raw water of the alkaline electrolyzed water to be produced, and a cation exchange membrane (diaphragm) 56 sandwiched between the anode chamber 53 and the cathode chamber 55.
  • a predetermined cleaning process for cleaning and removing scales generated inside, that is, ⁇ A> or ⁇ A'> described above is performed by the control unit.
  • the apparatus 510 includes a raw water (treated water) supply port OW for supplying raw water (treated water) to be passed through the cathode chamber 55 of each diaphragm electrolytic cell 51, and an alkaline electrolyzed water outlet PW for ejecting alkaline electrolyzed water, an electrolyte solution supply port ES for supplying an electrolyte solution to be passed through the anode chamber 53 of each diaphragm-equipped electrolytic cell 51, and electrolyzed water produced as a by-product of electrolysis. It has an electrolyte solution outlet DR for discharging.
  • the raw water (treated water) supply port OW is supplied with raw water (treated water) passing through the cathode chamber 55 of each diaphragm electrolytic cell 51, while the electrolytic solution supply port ES is supplied with the anode chamber of each diaphragm electrolytic cell 51. 53 is supplied, and in a state in which these are circulating in the multi-layered diaphragm-type electrolyzer 57, the raw water is electrolyzed by the function of each diaphragm-equipped electrolyzer 51 to generate alkaline electrolyzed water.
  • the electrolyzed water is discharged from the electrolyzed water discharge port PW, while the by-produced electrolyzed water is discharged from the electrolyte liquid discharge port DR.
  • the controller Prior to this normal operation, the controller performs a cleaning process, which will be described later.
  • FIG. 6 is a block diagram showing the control structure of the alkaline electrolyzed water production apparatus of the embodiment.
  • FIG. 7 is a control flow diagram of the alkaline electrolyzed water producing apparatus of the embodiment. Based on these, each process 1. which constitutes the cleaning treatment process. ⁇ 5. I will explain while following.
  • Step 1 Reset pre-washing control by electrodes and raw water/electrolyte liquid Open the direction of the V1 three-way valve to the drainage side, then pump raw water/electrolyte liquid to the cathode chamber and anode chamber respectively for a certain period of time (e.g. 380 mL/min ) supply. After that, the cathode chamber is electrified, and the retained and floating alkaline electrolyzed water and water-soluble metals such as calcium scale and magnesium scale are discharged to pre-wash (reset washing) the inside of the cathode chamber.
  • This step 1 has the effect of preventing electrical corrosion due to residual scale when a reverse (negative phase) voltage is applied.
  • Step 2 Reverse-phase voltage load control to prevent peeling and damage of the electrode coating
  • the voltage is boosted by stepwise control for a certain period of time.
  • the stepwise control has the effect of reliably removing the deposited scale and preventing damage to the cation exchange membrane and the iridium coating due to sudden voltage changes.
  • stepwise control of voltage boost is shown.
  • the following three stages of control are performed by the DC power supply unit DCU1.
  • monitoring measurement is performed by the DC ammeter VC1, and the set current (specified value) ⁇ 5% is within the specified value range.
  • Step 3 Re-cleaning control of the anode chamber and the cathode chamber after reversed-phase voltage load control Water-soluble metals such as calcium scale and magnesium scale peeled off, retained, and floated from the cathode side and the cathode side of the cation exchange membrane during step 2 is discharged, and the alkaline electrolyzed water generated on the anode side is discharged. It is discharged by the same control as in step 1. If the alkaline electrolyzed water remains on the anode side in the next step, the amount of electron transfer due to voltage load increases, and perforations and pinholes occur in the cation exchange membrane. This step has the effect of preventing these.
  • Water-soluble metals such as calcium scale and magnesium scale peeled off, retained, and floated from the cathode side and the cathode side of the cation exchange membrane during step 2 is discharged, and the alkaline electrolyzed water generated on the anode side is discharged. It is discharged by the same control as in
  • Step 4 Re-negative-phase step-by-step voltage load control for prevention of electrolytic pinholes in the cation exchange membrane. ) and the voltage value. This is the final check process by the cleaning process, and has the effect of confirming the presence or absence of quality degradation, failure, damage, and the like.
  • Step 5 Voltage normal operation monitoring control for equipment and quality protection If the DC current value and voltage value are within the specified values at the time of measurement in process 4, the operation monitor is commanded to display "Cleaning completed" and normal operation is possible. state. If the DC current value or voltage value differs from the specified value ⁇ 5%, the operation monitor is instructed to display an abnormal voltage, and a display is made to protect the equipment and quality.
  • the operation monitor will be instructed to display abnormal voltage, and for equipment and quality protection shall be displayed to encourage repair or replacement of parts.
  • “when the voltage is higher or lower than the specified value (exceeds ⁇ 5%)" is when the difference between the DC current value and the voltage value exceeds the specified value ⁇ 5%" ( The same applies below).
  • the operation monitor is instructed to display "cleaning finished” to indicate that normal operation is possible.
  • the voltage is higher or lower than the specified value (exceeding ⁇ 5%)
  • command the operation monitor to display abnormal voltage, display for equipment and quality protection, and repair or replace parts. I will encourage you to do so.
  • a reset process (reset switch (SW)) is performed to start generation of electrolyzed water or restart the cleaning process.
  • SW reset switch
  • the alkaline electrolyzed water producing apparatus the electrolytic cell cleaning method, and the electrolytic cell cleaning control structure of the present invention, in the production of alkaline electrolyzed water using a multi-layered diaphragm-type electrolytic cell, when a voltage is applied to the anode and the cathode in opposite phases. It is possible to effectively prevent the occurrence of electrolytic corrosion in the diaphragm due to the conductive scale of the diaphragm, thereby effectively preventing the occurrence of diaphragm pinholes and breakage of the electrode coating, effectively stabilizing the quality of the generated electrolyzed water, and improving the performance of the equipment. Failures can also be effectively prevented.
  • Reference Signs List 1 41, 51 Diaphragm electrolytic cell 2, 42, 52 Anode 3, 43, 53 Anode chamber 4, 44, 54 Cathode 5, 45, 55 Cathode chamber 6, 46, 56 Cation exchange membrane (diaphragm) 7, 47, 57 Multi-layer diaphragm-type electrolytic baths 8, 48
  • Control unit 10 410, 510 Alkaline electrolyzed water production device 49
  • Display unit DR Electrolyte solution outlet ES

Abstract

Provided are, inter alia, a device for producing alkaline electrolyzed water with which it is possible to prevent the occurrence of electrolytic corrosion in a diaphragm due to electroconductive scales when a positive electrode and a negative electrode are reversed in phase and a voltage is applied thereto, even in the case of production using a multilayered diaphragm-equipped electrolysis tank, whereby it is possible to prevent pinholes from being produced in the diaphragm and to prevent coatings of the electrodes from being damaged, resultingly making it possible to stabilize the quality of generated electrolyzed water and to prevent the device from being damaged.　This device 10 for producing alkaline electrolyzed water comprises a multilayered diaphragm-equipped electrolysis tank 7 composed of two or more diaphragm-equipped electrolysis tanks 1, 1, ..., and a control unit 8 for controlling washing within the multilayered diaphragm-equipped electrolysis tank 7. Each of the diaphragm-equipped electrolysis tanks 1 is provided with: a positive electrode chamber 3 for circulating an aqueous solution of electrolytes, the positive electrode chamber 3 having a positive electrode 2; a negative electrode chamber 5 for circulating raw water of alkaline electrolyzed water to be produced, the negative electrode chamber 5 having a negative electrode 4; and a diaphragm 6 sandwiched between the positive electrode chamber 3 and the negative electrode chamber 5. The device 10 for producing alkaline electrolyzed water is configured such that a prescribed washing process step P10 for washing away scales produced in the diaphragm-equipped electrolysis tanks 1 is carried out by the control unit 8. FIG. 1 is a representative diagram.　

Description

アルカリ性電解水製造装置、その電解槽洗浄方法、および電解槽洗浄制御構造Alkaline electrolyzed water production apparatus, electrolytic cell cleaning method thereof, and electrolytic cell cleaning control structure
　本発明はアルカリ性電解水製造装置、その電解槽洗浄方法、および電解槽洗浄制御構造に係り、特に、供給するアルカリ性電解水の品質安定およびランニングコストの低減を実現できる技術に関する。 The present invention relates to an alkaline electrolyzed water production apparatus, an electrolytic cell cleaning method thereof, and an electrolytic cell cleaning control structure, and more particularly to a technology capable of stabilizing the quality of supplied alkaline electrolyzed water and reducing running costs.
　アルカリ性電解水製造装置は、水道水等の原水に電解助剤を加えて電気分解することによりアルカリ性電解水を製造する装置である。具体的には、電解槽と、電解槽内に配置した隔膜と、隔膜を挟んで配置した陰陽の各電極とを備えた構成であり、電解槽内に食塩水等の電解質液を供給しながら電気分解をすることで、陰極側にアルカリ性電解水、陽極側に酸性電解水が生成する。生成するアルカリ性電解水のｐＨは１３程度という高いものであるため、細菌増殖抑制効果、また、含有されるＮａＯＨ等による洗浄効果に優れる。 The alkaline electrolyzed water production device is a device that produces alkaline electrolyzed water by adding an electrolysis aid to raw water such as tap water and electrolyzing it. Specifically, it is a configuration comprising an electrolytic cell, a diaphragm arranged in the electrolytic cell, and positive and negative electrodes arranged with the diaphragm interposed therebetween. Electrolysis produces alkaline electrolyzed water on the cathode side and acidic electrolyzed water on the anode side. Since the pH of the generated alkaline electrolyzed water is as high as about 13, it is excellent in the effect of suppressing bacterial growth and the cleaning effect of the contained NaOH and the like.
　したがって、農業分野（ｐＨ調整、水質改善）、畜産分野（洗浄、殺菌、消臭）、食品加工分野（洗浄、除菌、消臭）、工業分野（脱脂洗浄、精密洗浄）、環境分野（水処理、煤煙処理）など、広範な産業分野において利用可能である。また、片側吐水方式とすることにより、たとえば目的とするアルカリ性電解水製造と同時に副成する酸性電解水を、廃棄せずに循環させて再利用に供することができる。 Therefore, agricultural field (pH adjustment, water quality improvement), livestock field (cleaning, sterilization, deodorant), food processing field (cleaning, sterilization, deodorant), industrial field (degreasing, precision cleaning), environmental field (water treatment, soot treatment), etc., can be used in a wide range of industrial fields. In addition, by adopting a one-sided water discharge system, for example, the acidic electrolyzed water, which is produced as a byproduct at the same time as the production of the intended alkaline electrolyzed water, can be circulated and reused without being discarded.
　電解水製造技術については従来、技術的な提案も多くなされている。たとえば後掲特許文献１には、半導体製造工程における金属不純物・パーティクル・腐食性残留ガス成分の洗浄に用いる電解水を生成する装置として、電極間距離または電極表面積を可変とし、隔膜材料としてイオン交換膜とガス透過性膜を使用し、電解時や洗浄時の温度制御機構を有し、電解槽を圧力可変とし、さらに超音波発振機構や磁場発生機構を備える構成が開示されている。これによって、電気分解の効率および電解水の生成効率を高められるとしている。 Many technical proposals have been made for electrolyzed water production technology. For example, in Patent Document 1 listed below, as a device for generating electrolyzed water used for cleaning metal impurities, particles, and corrosive residual gas components in the semiconductor manufacturing process, the distance between the electrodes or the surface area of the electrodes is variable, and ion exchange is used as a diaphragm material. A configuration is disclosed that uses a membrane and a gas-permeable membrane, has a temperature control mechanism during electrolysis and cleaning, has a variable pressure electrolytic bath, and further has an ultrasonic oscillation mechanism and a magnetic field generation mechanism. This is said to increase the efficiency of electrolysis and the efficiency of generating electrolyzed water.
特開平７－２５６２５９号公報「電解水生成方法および電解水生成機構」Japanese Unexamined Patent Publication No. 7-256259 "Electrolyzed Water Generation Method and Electrolyzed Water Generation Mechanism"
　さて、上述した隔膜を有する電解槽を二段以上接続して構成される電解槽の形式を、以下、多層型有隔膜電解槽という。多層型有隔膜電解槽を用いることにより、アルカリ性電解水製造能力を高め、かつ長時間運転を高めることができる。しかし一方、電極と隔膜の間隔が狭いため、陽極と陰極を逆相し電圧をかけた場合、原水の性質によって電極にカルシウムスケールやマグネシウムスケールが固着し、イリジウム等による陽極と陰極のコーティングを被覆する。 Now, the type of electrolytic cell configured by connecting two or more stages of electrolytic cells having the above-mentioned diaphragms is hereinafter referred to as a multi-layer diaphragm-type electrolytic cell. By using a multi-layer diaphragm-type electrolytic cell, it is possible to increase the capacity for producing alkaline electrolyzed water and to increase the operation for a long period of time. However, on the other hand, due to the narrow gap between the electrode and the diaphragm, when voltage is applied with the anode and cathode reversed in phase, depending on the properties of the raw water, calcium scale and magnesium scale adhere to the electrode, covering the anode and cathode coatings of iridium, etc. do.
この導電性のスケールが、電解水の品質低下を招いたり、陽イオン交換膜に接触したりする程度にまでに肥大すると、隔膜に電蝕現象を発生させることがある。これは、隔膜ピンホールの発生や電極のコーティング破損の原因となる。隔膜ピンホールや電極のコーティング破損によって、生成する電解水の品質が不安定となる上、装置が故障する恐れもある。かかる問題の解決が求められている。 If this conductive scale degrades the quality of the electrolyzed water or enlarges to such an extent that it comes into contact with the cation exchange membrane, it may cause electrolytic corrosion of the diaphragm. This causes diaphragm pinholes and electrode coating damage. Diaphragm pinholes and breakage of the coating of the electrodes may cause the quality of the electrolyzed water to be unstable, and may even cause the equipment to malfunction. A solution to this problem is desired.
　そこで本発明が解決しようとする課題は、かかる従来技術の問題点をなくし、多層型有隔膜電解槽による製造方式であっても、陽極と陰極を逆相し電圧をかけた場合の導電性スケールによる隔膜における電蝕現象発生を防止でき、これにより隔膜ピンホールの発生や電極のコーティング破損を防止でき、その結果、生成する電解水の品質を安定化でき、装置の故障も防止することのできる、アルカリ性電解水製造装置等を提供することである。 Therefore, the problem to be solved by the present invention is to eliminate the problems of the conventional technology, and even in a manufacturing method using a multi-layer diaphragm electrolytic cell, when a voltage is applied with the anode and cathode reversed in phase, the conductive scale It is possible to prevent the occurrence of electrolytic corrosion in the diaphragm caused by , to provide an alkaline electrolyzed water production apparatus and the like.
　本願発明者は上記課題について検討した結果、有隔膜電解槽中に発生するスケールを洗浄除去するための制御部を設けること、洗浄処理では洗浄と逆相電圧負荷を交互に行うこと、さらには逆相電圧負荷の際には段階的な昇圧を行うことなどによって解決できることを見出し、これに基づいて本発明を完成するに至った。すなわち、上記課題を解決するための手段として本願で特許請求される発明、もしくは少なくとも開示される発明は、以下の通りである。 As a result of studying the above problems, the inventors of the present application have found that a control unit is provided for cleaning and removing scale generated in the diaphragm electrolytic bath, that cleaning and reverse-phase voltage loading are performed alternately in the cleaning process, and that reverse-phase voltage loading is performed alternately. The present inventors have found that the problem can be solved by stepwise boosting when the phase voltage is loaded, and have completed the present invention based on this finding. That is, the inventions claimed in the present application, or at least the inventions disclosed as means for solving the above problems, are as follows.
　〔１〕　二段以上の有隔膜電解槽からなる多層型有隔膜電解槽と、該多層型有隔膜電解槽内の洗浄を制御するための制御部とを備えてなるアルカリ性電解水製造装置であって、該有隔膜電解槽は、陽極を有し電解質水溶液流通用である陽極室と、陰極を有し製造するアルカリ性電解水の原水流通用である陰極室と、該陽極室および該陰極室の間に挟設された陽イオン交換膜とを備えてなり、該有隔膜電解槽中に発生するスケールを洗浄除去するための下記＜Ａ＞に示す洗浄処理工程が該制御部によりなされることを特徴とする、アルカリ性電解水製造装置。
　＜Ａ＞　洗浄処理工程は、該陰極室内の洗浄過程－該洗浄過程の後の逆相電圧負荷過程　を１サイクルとし、これを２サイクル以上行う工程である。
　〔２〕　前記サイクルが２回行われる、すなわち下記＜Ａ’＞に示す洗浄処理工程が行われることを特徴とする、〔１〕に記載のアルカリ性電解水製造装置。
　＜Ａ’＞　該陰極室内の予備的な洗浄過程であるところの予備洗浄過程、その後の逆相電圧負荷過程、その後の該陰極室内の洗浄過程であるところの再洗浄過程、その後の逆相電圧負荷過程であるところの再逆相電圧負荷過程
　〔３〕　前記洗浄処理工程の逆相電圧負荷過程では、電圧が段階的に昇圧されることを特徴とする、〔１〕、〔２〕のいずれかに記載のアルカリ性電解水製造装置。
　〔４〕　前記洗浄処理工程の少なくともいずれかの逆相電圧負荷過程の後に、電気的な検知に基づき洗浄効果を評価する評価過程を備えることを特徴とする、〔１〕、〔２〕、〔３〕のいずれかに記載のアルカリ性電解水製造装置。 [1] An alkaline electrolyzed water producing apparatus comprising a multi-layered diaphragm-type electrolyzer consisting of two or more stages of diaphragm-typed electrolyzers, and a controller for controlling the cleaning of the multi-layered diaphragm-type electrolyzer. The diaphragm-equipped electrolytic cell comprises an anode chamber having an anode for circulating an aqueous electrolyte solution, a cathode chamber having a cathode for circulating raw water of the alkaline electrolyzed water to be produced, and the anode chamber and the cathode chamber. and a cation exchange membrane interposed therebetween, and that the cleaning treatment step shown in <A> below for cleaning and removing scale generated in the diaphragm electrolytic cell is carried out by the control unit. An apparatus for producing alkaline electrolyzed water, characterized by:
<A> In the cleaning process, one cycle is the process of cleaning the inside of the cathode chamber and the process of applying the negative-phase voltage after the cleaning process, and this cycle is repeated two or more times.
[2] The alkaline electrolyzed water production apparatus according to [1], characterized in that the cycle is performed twice, that is, the cleaning treatment step shown in <A'> below is performed.
<A'> A pre-cleaning process, which is a preliminary cleaning process for the inside of the cathode chamber, a subsequent reverse-phase voltage application process, a subsequent re-cleaning process, which is a cleaning process for the inside of the cathode chamber, followed by a reverse-phase voltage [3] Any of [1] and [2], wherein the voltage is stepped up in the step of applying the negative-sequence voltage in the cleaning step. The alkaline electrolyzed water production apparatus according to any one of the above.
[4] [1], [2], and [1], [2], and [1], [2], [ 3].
　〔５〕　前記評価過程による洗浄効果評価結果を示す表示部を有することを特徴とする、〔４〕に記載のアルカリ性電解水製造装置。
　〔６〕　前記評価過程により所定の洗浄効果が確認された後、アルカリ性電解水の製造がなされるよう構成されていることを特徴とする、〔４〕、〔５〕のいずれかに記載のアルカリ性電解水製造装置。
　〔７〕　〔１〕、〔２〕、〔３〕、〔４〕、〔５〕、〔６〕のいずれかに記載するアルカリ性電解水製造装置における電解槽洗浄方法であって、該有隔膜電解槽中に発生するスケールを洗浄除去するための下記＜Ａ＞に示す洗浄処理工程を行うことを特徴とする、アルカリ性電解水製造装置の電解槽洗浄方法。
　＜Ａ＞　洗浄処理工程は、該陰極室内の洗浄過程－該洗浄過程の後の逆相電圧負荷過程　を１サイクルとし、これを２サイクル以上行う工程である。
　〔８〕　陽極を有し電解質水溶液流通用である陽極室、陰極を有し製造するアルカリ性電解水の原水流通用である陰極室、および、該陽極室ならびに該陰極室の間に挟設された陽イオン交換膜とからなる該有隔膜電解槽を、二段以上備えてなる多層型有隔膜電解槽を有するアルカリ性電解水製造装置における、該多層型有隔膜電解槽内洗浄用の制御構造であって、該有隔膜電解槽中に発生するスケールを洗浄除去するための下記＜Ａ＞に示す洗浄処理工程を制御することを特徴とする、アルカリ性電解水製造装置の電解槽洗浄制御構造。
　＜Ａ＞　洗浄処理工程は、該陰極室内の洗浄過程－該洗浄過程の後の逆相電圧負荷過程　を１サイクルとし、これを２サイクル以上行う工程である。 [5] The alkaline electrolyzed water production apparatus according to [4], characterized by having a display unit for indicating the cleaning effect evaluation result in the evaluation process.
[6] The alkaline electrolyzed water according to any one of [4] and [5], wherein the alkaline electrolyzed water is produced after a predetermined cleaning effect is confirmed in the evaluation process. Electrolyzed water production equipment.
[7] A method for cleaning an electrolytic cell in an alkaline electrolyzed water production apparatus according to any one of [1], [2], [3], [4], [5], and [6], wherein the diaphragm electrolysis is performed. A method for cleaning an electrolytic cell of an alkaline electrolyzed water production apparatus, characterized by performing a cleaning treatment step shown in <A> below for cleaning and removing scale generated in the cell.
<A> In the cleaning process, one cycle is the process of cleaning the inside of the cathode chamber and the process of applying the negative-phase voltage after the cleaning process, and this cycle is repeated two or more times.
[8] An anode chamber having an anode for circulating an aqueous electrolyte solution, a cathode chamber having a cathode for circulating the raw water of the alkaline electrolyzed water to be produced, and an anode chamber and a cathode chamber sandwiched between the anode chamber and the cathode chamber. A control structure for cleaning the inside of a multi-layered diaphragm-type electrolytic cell in an alkaline electrolyzed water production apparatus having two or more stages of said multi-layered diaphragm-type electrolytic cell comprising a cation exchange membrane. and controlling a cleaning process shown in <A> below for cleaning and removing scale generated in the diaphragm electrolytic cell.
<A> In the cleaning process, one cycle is the process of cleaning the inside of the cathode chamber and the process of applying the negative-phase voltage after the cleaning process, and this cycle is repeated two or more times.
　本発明のアルカリ性電解水製造装置、その電解槽洗浄方法、および電解槽洗浄制御構造は上述のように構成されるため、これらによれば、多層型有隔膜電解槽によるアルカリ性電解水製造において、陽極と陰極を逆相し電圧をかけた場合の導電性スケールによる隔膜における電蝕現象発生を有効に防止でき、これにより隔膜ピンホールの発生や電極のコーティング破損を有効に防止でき、その結果、生成する電解水の品質を有効に安定化でき、装置の故障も有効に防止することができる。 The apparatus for producing alkaline electrolyzed water, the method for cleaning the electrolytic cell thereof, and the structure for controlling cleaning of the electrolytic cell of the present invention are configured as described above. It is possible to effectively prevent the occurrence of electrical corrosion in the diaphragm due to conductive scale when a voltage is applied with the opposite phase of the cathode and the cathode. It is possible to effectively stabilize the quality of electrolyzed water to be produced, and to effectively prevent failure of the device.
　多くはイリジウム、プラチナ等が用いられる電極のコーティングにおける破損・剥離を防止でき、また隔膜（陽イオン交換膜）におけるピンホール発生を防止できることは、これらの長寿命化に繋がるため、装置のランニングコストを低減できることになる。また、本発明によって、製造されるアルカリ性電解水の品質を良好に安定化できるため、特に電解水の品質安定を重視する産業分野における電解水利用・普及拡大を促進することができる。 Preventing breakage and peeling of the electrode coating, which is often made of iridium, platinum, etc., and preventing pinholes in the diaphragm (cation exchange membrane) lead to a longer life, which reduces the running cost of the equipment. can be reduced. In addition, according to the present invention, the quality of the produced alkaline electrolyzed water can be stabilized favorably, so that the use and spread of electrolyzed water can be promoted especially in industrial fields where quality stability of electrolyzed water is emphasized.
　アルカリ性電解水製造装置に供給される原水としては、我が国では軟水を容易に用いることができる。しかしながら海外では、ＭｇやＣａ等の含有量が高い硬水の多い国も少なくない。本発明装置等を用いれば、たとえばＭｇやＣａ量が過多な水質などでも良好に処理可能であり、原水として対応可能な水質の幅が広い。したがって本発明装置等は、硬水の多い海外市場においても利用拡大が望める。 Soft water can be easily used in Japan as the raw water supplied to the alkaline electrolyzed water production equipment. However, there are quite a few countries overseas that have a lot of hard water with a high content of Mg, Ca, and the like. By using the apparatus of the present invention, for example, even water with an excessive amount of Mg or Ca can be satisfactorily treated, and a wide range of water qualities can be handled as raw water. Therefore, the use of the apparatus of the present invention can be expected to expand even in overseas markets where there is a lot of hard water.
　本発明のアルカリ性電解水製造装置、その電解槽洗浄方法、および電解槽洗浄制御構造によれば、その品質安定・ランニングコスト低減・装置の長寿命化の各効果により、農業分野におけるｐＨ調整・水質改善等への利用、畜産分野における洗浄・殺菌・消臭等への利用、食品加工分野における洗浄・除菌・消臭等への利用、工業分野における脱脂洗浄・精密洗浄への利用、環境分野における水処理・煤煙処理等への利用、さらには飲食業やクリーニング業など広範な産業分野に亘る利用において、アルカリ性電解水の利用を従来以上に拡大すること、あるいは導入することができる。 According to the apparatus for producing alkaline electrolyzed water, the method for cleaning the electrolytic cell, and the control structure for cleaning the electrolytic cell according to the present invention, the quality stability, running cost reduction, and longevity of the apparatus contribute to pH adjustment and water quality in the agricultural field. Use for improvement, use for cleaning, sterilization, deodorization, etc. in the livestock field, use for cleaning, sterilization, deodorization, etc. in the food processing field, use for degreasing and precision cleaning in the industrial field, environmental field It is possible to expand or introduce the use of alkaline electrolyzed water more than before in the use for water treatment, soot treatment, etc., and in the use over a wide range of industrial fields such as the restaurant industry and the cleaning industry.
本発明のアルカリ性電解水製造装置の基本構成を示す概念図である。1 is a conceptual diagram showing a basic configuration of an alkaline electrolyzed water producing apparatus of the present invention; FIG. 図１に示す本発明アルカリ性電解水製造装置における制御部の作用を示すフロー図である。FIG. 2 is a flow chart showing the action of a control unit in the alkaline electrolyzed water producing apparatus of the present invention shown in FIG. 1; 図１に示す本発明アルカリ性電解水製造装置において２サイクルによる洗浄処理工程がなされる例を示すフロー図である。FIG. 2 is a flow chart showing an example in which a two-cycle cleaning treatment process is performed in the alkaline electrolyzed water producing apparatus of the present invention shown in FIG. 1; 評価過程を備えた洗浄処理工程を示すフロー図である。FIG. 4 is a flow diagram showing a cleaning process step with an evaluation process; 表示部を備えた本発明のアルカリ性電解水製造装置の基本構成を示す概念図である。1 is a conceptual diagram showing a basic configuration of an alkaline electrolyzed water producing apparatus of the present invention provided with a display section; FIG. 本発明実施例アルカリ性電解水製造装置の構成をその多層型有隔膜電解槽の構成を中心にして示す説明図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing the configuration of an alkaline electrolyzed water producing apparatus according to an embodiment of the present invention, centering on the configuration of a multi-layer diaphragm electrolytic cell; 実施例アルカリ性電解水製造装置の制御構造を示すブロック図である。FIG. 3 is a block diagram showing the control structure of the alkaline electrolyzed water producing apparatus of the embodiment; 実施例アルカリ性電解水製造装置の制御フロー図である。It is a control flow chart of an example alkaline electrolyzed water production apparatus.
　以下、図面により本発明を詳細に説明する。
　図１は、本発明のアルカリ性電解水製造装置の基本構成を示す概念図である。また、図１－２は、図１に示す本発明アルカリ性電解水製造装置における制御部の作用を示すフロー図である。これらに示すように本アルカリ性電解水製造装置１０は、二段以上の有隔膜電解槽１、１、・・・が連続してなる多層型有隔膜電解槽７と、多層型有隔膜電解槽７内の洗浄を制御するための制御部８とを備えてなる構成であって、有隔膜電解槽１は、陽極２を有し電解質水溶液流通用である陽極室３と、陰極４を有し製造するアルカリ性電解水の原水流通用である陰極室５と、陽極室３および陰極室５の間に挟設された陽イオン交換膜（隔膜）６とを備えてなり、有隔膜電解槽１中に発生するスケールを洗浄除去するための下記＜Ａ＞に示す洗浄処理工程Ｐ１０が該制御部８によりなされることを、主たる構成とする。
　＜Ａ＞　洗浄処理工程Ｐ１０は、陰極室５内の洗浄過程Ｐ１－洗浄過程Ｐ１の後の逆相電圧負荷過程Ｐ２　を１サイクルとし、これを２サイクル以上行う工程である。図１－２中のｎは、２以上の自然数である。 The present invention will be described in detail below with reference to the drawings.
FIG. 1 is a conceptual diagram showing the basic configuration of the alkaline electrolyzed water producing apparatus of the present invention. FIG. 1-2 is a flow chart showing the action of the controller in the alkaline electrolyzed water producing apparatus of the present invention shown in FIG. As shown in these figures, the present alkaline electrolyzed water production apparatus 10 includes a multi-layered diaphragm-equipped electrolytic cell 7 in which two or more stages of diaphragm-equipped electrolytic cells 1, 1, . . . The diaphragm electrolytic cell 1 has an anode chamber 3 having an anode 2 and for circulating an aqueous electrolyte solution, and a cathode 4. A cathode chamber 5 for circulating raw alkaline electrolyzed water, and a cation exchange membrane (diaphragm) 6 sandwiched between the anode chamber 3 and the cathode chamber 5. The main configuration is that the controller 8 performs a cleaning treatment step P10 shown in <A> below for cleaning and removing generated scale.
<A> In the cleaning process P10, one cycle is the cleaning process P1 in the cathode chamber 5 and the reverse-phase voltage loading process P2 after the cleaning process P1. n in FIGS. 1-2 is a natural number of 2 or more.
　かかる構成の本アルカリ性電解水製造装置１０では、各有隔膜電解槽１、１、・・・からなる多層型有隔膜電解槽７内における洗浄処理工程Ｐ１０が、制御部８による制御のもと実行され、有隔膜電解槽１中に発生するスケールが洗浄除去される。すなわち、洗浄過程Ｐ１において陰極室５内が洗浄され、ついで、逆相電圧負荷過程Ｐ２において陽極２と陰極４の極性を逆転させた状態で電圧が負荷される。洗浄処理工程Ｐ１０では、この洗浄過程Ｐ１－逆相電圧負荷過程Ｐ２を１サイクルとして、２サイクル以上がなされる。かかる洗浄処理工程Ｐ１０が制御、実行される本発明アルカリ性電解水製造装置１０によれば、有隔膜電解槽１中に発生するスケールが有効に洗浄除去され、生成する電解水の品質が安定し、また装置故障が防止される。 In the alkaline electrolyzed water production apparatus 10 having such a configuration, the cleaning process P10 in the multi-layered diaphragm-type electrolyzer 7 composed of the respective diaphragm-equipped electrolyzers 1, 1, . . . Then, the scale generated in the diaphragm electrolytic bath 1 is washed and removed. That is, the inside of the cathode chamber 5 is cleaned in the cleaning process P1, and then the voltage is applied with the polarities of the anode 2 and the cathode 4 reversed in the reverse phase voltage application process P2. In the cleaning process P10, two or more cycles are performed, with this cleaning process P1-reversed-phase voltage application process P2 as one cycle. According to the alkaline electrolyzed water production apparatus 10 of the present invention in which the cleaning process P10 is controlled and executed, scale generated in the diaphragm-equipped electrolyzer 1 is effectively washed away, and the quality of the generated electrolyzed water is stabilized. Also, device failure is prevented.
　すなわち、原水の性質によってカルシウムスケール等の導電性のスケールが発生した場合、これが放置されると、電極のコーティングの被覆、隔膜の電蝕現象、ピンホールの発生、さらには電極のコーティングの剥離や剥離後の再結合、滞留等の不都合が生じるのだが、本アルカリ電解水製造装置１０によれば、それらの根本的な原因であるスケールを洗浄除去することができる。 In other words, if conductive scale such as calcium scale is generated due to the nature of the raw water, if left unattended, the electrode coating will be covered, the diaphragm will be electro-corroded, pinholes will be generated, and the electrode coating will peel off. Problems such as recombination and retention after peeling occur, but according to the alkaline electrolyzed water producing apparatus 10, the scale, which is the root cause of these problems, can be washed away.
　図２は、図１に示す本発明アルカリ性電解水製造装置において２サイクルによる洗浄処理工程がなされる例を示すフロー図である。図示するように本アルカリ性電解水製造装置１０においては、図１－２で示した洗浄過程－逆相電圧負荷過程のサイクルが２回行われる構成とすることができる。３サイクル以上を行わなくても、２サイクルで十分な洗浄効果を得る構成である。すなわち、陰極室５内の予備的な洗浄過程であるところの予備洗浄過程Ｐ１１、その後の逆相電圧負荷過程Ｐ１２、その後の陰極室５内の洗浄過程であるところの再洗浄過程Ｐ２１、そして最後に、その後の逆相電圧負荷過程であるところの再逆相電圧負荷過程Ｐ２２が順に行われる工程であり、洗浄過程－逆相電圧負荷過程＞として２サイクル、全４過程による洗浄処理工程Ｐ２１０である（上述の課題を解決するための手段の〔２〕に示した「洗浄処理工程＜Ａ’＞と同じ）。 FIG. 2 is a flow diagram showing an example in which the alkaline electrolyzed water producing apparatus of the present invention shown in FIG. 1 performs a two-cycle cleaning process. As shown in the figure, the present alkaline electrolyzed water producing apparatus 10 can be configured such that the cycle of the cleaning process and the reverse phase voltage application process shown in FIG. 1-2 is performed twice. Even if three cycles or more are not performed, it is a structure in which a sufficient cleaning effect is obtained in two cycles. That is, a pre-cleaning process P11 which is a preliminary cleaning process for the inside of the cathode chamber 5, a reverse phase voltage loading process P12 which follows, a re-cleaning process P21 which is a cleaning process for the inside of the cathode chamber 5 after that, and finally, Then, the re-negative-phase voltage load process P22, which is the subsequent negative-phase voltage load process, is performed in order, and the cleaning process--negative-phase voltage load process> is two cycles, a total of four processes in the cleaning process P210. There is (same as the “cleaning treatment step <A′>” shown in [2] of the means for solving the above-mentioned problems).
　かかるフローにより、まず予備洗浄過程Ｐ１１で陰極室５内の予備的な洗浄が行われ、その後、陽極２と陰極４の極性を逆転させた状態で電圧が負荷される逆相電圧負荷過程Ｐ１２が行われ、その後再び、陰極室５内の洗浄過程（再洗浄過程Ｐ２１）が行われ、そして最後に再び、逆相電圧負荷過程（再逆相電圧負荷過程Ｐ２２）が行われ、かかる２サイクル全４過程の洗浄処理工程Ｐ２１０によって、隔膜の電蝕現象・ピンホールの発生・電極コーティングの剥離等の根本原因であるスケールが十分に洗浄除去され、生成する電解水の品質が安定し、また装置故障が防止される。 According to this flow, the interior of the cathode chamber 5 is first preliminarily cleaned in the preliminary cleaning step P11, and then the reverse phase voltage loading step P12 is performed in which voltage is applied while the polarities of the anode 2 and the cathode 4 are reversed. After that, a cleaning process (re-cleaning process P21) in the cathode chamber 5 is performed again, and finally a reverse-phase voltage application process (re-negative-phase voltage application process P22) is performed again. The four-step cleaning process P210 sufficiently cleans and removes the scale, which is the root cause of the electrolytic corrosion phenomenon of the diaphragm, the occurrence of pinholes, and the peeling of the electrode coating, and stabilizes the quality of the generated electrolyzed water. Failure is prevented.
　本アルカリ性電解水製造装置１０の洗浄処理工程Ｐ１０、Ｐ２１０の逆相電圧負荷過程Ｐ２、Ｐ１２、Ｐ２２では、電圧を段階的に昇圧する構成とすることができる。たとえば、ＤＣ１０ＶＡで１分間、ついで昇圧してＤＣ２０ＶＡで１分間、さらに昇圧してＤＣ２８ＶＡで１分間、等の段階的昇圧である。これにより、急激な昇圧による不具合発生の可能性を低減しつつ、確実な昇圧による逆転洗浄の効果を担保することができる。なお、急激な昇圧による不具合としては、帯電スケールの急激な電極間の移動による隔膜の破損、および電子振動による電極に電着されたコーティング金属の剥離がある。 In the reversed-phase voltage loading steps P2, P12, and P22 of the cleaning treatment steps P10 and P210 of the alkaline electrolyzed water production apparatus 10, the voltage can be stepped up. For example, the voltage is stepped up at DC 10 VA for 1 minute, then at DC 20 VA for 1 minute, further at DC 28 VA for 1 minute, and the like. As a result, it is possible to secure the effect of reverse cleaning by reliable pressure increase while reducing the possibility of malfunction due to rapid pressure increase. Problems caused by rapid pressure increase include damage to the diaphragm due to rapid movement of the charged scale between the electrodes, and peeling of the coating metal electrodeposited on the electrodes due to electronic vibration.
　図３は、評価過程を備えた洗浄処理工程を示すフロー図である。図示するように本アルカリ性電解水製造装置１０は、制御部８により制御・実行される洗浄処理工程Ｐ３１０の逆相電圧負荷過程Ｐ１２、Ｐ２２等の少なくともいずれかの後に、電気的な検知に基づいて、洗浄処理工程Ｐ３１０中の先行過程を経た後の洗浄処理結果の良否を評価する評価過程Ｐ１３、Ｐ２３を備える構成とすることができる。電気的な検知としては、たとえば陰極４－陽極２間の直流電流値を用いることができるが、これに限定されない。 FIG. 3 is a flow diagram showing a cleaning process with an evaluation process. As shown in the figure, the alkaline electrolyzed water production apparatus 10, after at least one of the reverse phase voltage loading steps P12, P22, etc. of the cleaning treatment step P310 controlled and executed by the control unit 8, based on electrical detection , evaluation processes P13 and P23 for evaluating the quality of the result of the cleaning process after the preceding process in the cleaning process P310. As an electrical detection, for example, a DC current value between the cathode 4 and the anode 2 can be used, but it is not limited to this.
　かかる構成により本洗浄処理工程Ｐ３１０のフローによれば、逆相電圧負荷過程Ｐ１２の後に評価過程Ｐ１３、または逆相電圧負荷過程Ｐ２２の後に評価過程Ｐ２３、少なくともいずれかの評価過程が行われ、電気的な検知に基づいて、先行過程を経た後の洗浄処理結果の良否が評価される。なお、評価過程Ｐ１３、Ｐ２３の両方が設けられ、洗浄効果の評価がなされる構成が最も望ましい。また、図では２サイクルの構成を示すが、前出図１－２を用いて説明した３サイクル以上の場合でも、各逆相電圧負荷過程Ｐ２等の後に評価過程を設ける構成とすることも、本発明の範囲内である。 With such a configuration, according to the flow of the main cleaning process P310, at least one of the evaluation process P13 is performed after the reversed-phase voltage load process P12, or the evaluation process P23 is performed after the reversed-phase voltage load process P22. Based on the positive detection, the quality of the cleaning treatment result after the preceding process is evaluated. The most desirable configuration is one in which both the evaluation steps P13 and P23 are provided and the cleaning effect is evaluated. In addition, although the figure shows a two-cycle configuration, even in the case of three or more cycles as described with reference to FIG. It is within the scope of the present invention.
　評価過程Ｐ１３等における洗浄処理結果の良否評価、およびその評価に基づくその後の運転制御の具体的パターンは、適宜に設計可能である。たとえば、洗浄効果良否の電気的な検知の閾値設定、また、評価結果が不良である場合の運転制御として、洗浄処理によるスケール洗浄除去は不可能として装置部品の交換を促す指令とするか、再度の洗浄処理工程を行わせる指令とするか、などである。これらの運転制御は、洗浄処理工程Ｐ３１０等の制御・実行と同様に、制御部８の担当機能とすることができる。 The quality evaluation of the cleaning treatment result in the evaluation process P13, etc., and the specific pattern of subsequent operation control based on the evaluation can be appropriately designed. For example, setting a threshold value for electrical detection of whether the cleaning effect is good or bad, and as an operation control when the evaluation result is unsatisfactory, it is impossible to remove the scale by cleaning by cleaning treatment, and a command prompting replacement of equipment parts is issued. For example, whether to issue a command to perform the cleaning treatment process. These operational controls can be the functions of the controller 8 in charge, like the control and execution of the cleaning process P310 and the like.
　図４は、表示部を備えた本発明のアルカリ性電解水製造装置の基本構成を示す概念図である。図示するように本アルカリ性電解水製造装置４１０は、図１により説明した各構成要素に加えて、評価過程による洗浄効果評価結果を示す表示部４９を備えた構成とすることができる。表示部４９に表される所定の表示によって、スケール除去のための洗浄処理結果の良否を本装置４１０使用者は知り、装置４１０の状態の良否を確認することができる。なお、表示部４９の表示には、評価結果に基づく部品交換・再度洗浄などの対処法の表示が含まれてもよいことは言うまでもない。 FIG. 4 is a conceptual diagram showing the basic configuration of the alkaline electrolyzed water production apparatus of the present invention equipped with a display unit. As shown, the alkaline electrolyzed water producing apparatus 410 can be configured to have a display section 49 for displaying the cleaning effect evaluation result in the evaluation process, in addition to the constituent elements described with reference to FIG. A user of the apparatus 410 can know the quality of the washing treatment result for scale removal by the predetermined display displayed on the display unit 49 and can confirm the quality of the state of the apparatus 410 . Needless to say, the display on the display unit 49 may include display of countermeasures such as part replacement and re-cleaning based on the evaluation result.
　また、アルカリ性電解水製造装置４１０は、評価過程Ｐ１３等により所定の洗浄効果が確認された後、アルカリ性電解水の製造が自動的になされる構成とすることができる。洗浄処理工程Ｐ３１０等は、製造されるアルカリ電解水の品質保持と装置の正常状態保持のためになされる工程であり、所定のスケール洗浄除去効果が確認された以上、何ら問題なくアルカリ性電解水製造を開始できる。 Also, the alkaline electrolyzed water production device 410 can be configured to automatically produce alkaline electrolyzed water after a predetermined cleaning effect is confirmed in the evaluation process P13 or the like. The cleaning treatment process P310 and the like are processes performed to maintain the quality of the produced alkaline electrolyzed water and to maintain the normal state of the apparatus. can be started.
　以上説明したいずれかの構成のアルカリ性電解水製造装置１０等における電解槽洗浄方法であって、有隔膜電解槽１等中に発生するスケールを洗浄除去するための下記＜Ａ＞に示す洗浄処理工程Ｐ１０等を行う電解槽洗浄方法も、本発明の範囲内である。
　＜Ａ＞　洗浄処理工程Ｐ１０等は、陰極室５等内の洗浄過程Ｐ１等－洗浄過程Ｐ１等の後の逆相電圧負荷過程Ｐ２等　を１サイクルとし、これを２サイクル以上行う工程。 A method for cleaning an electrolytic cell in an alkaline electrolyzed water producing apparatus 10 or the like having any of the configurations described above, which is a cleaning treatment step shown in <A> below for cleaning and removing scale generated in the diaphragm electrolytic cell 1 or the like. Electrolytic bath cleaning methods such as P10 are also within the scope of the present invention.
<A> In the cleaning process P10, etc., one cycle is the cleaning process P1, etc. in the cathode chamber 5, etc. - the negative phase voltage loading process P2, etc. after the cleaning process P1, etc., and this process is performed for two or more cycles.
　さらに、以上説明したいずれかの構成のアルカリ性電解水製造装置１０等における、多層型有隔膜電解槽７等内洗浄用の制御構造であって、有隔膜電解槽１等中に発生するスケールを洗浄除去するための下記＜Ａ＞に示す洗浄処理工程Ｐ１０等を制御する、アルカリ性電解水製造装置の電解槽洗浄制御構造もまた、本発明の範囲内である。
　＜Ａ＞　洗浄処理工程Ｐ１０等は、陰極室５等内の洗浄過程Ｐ１等－洗浄過程Ｐ１等の後の逆相電圧負荷過程Ｐ２等　を１サイクルとし、これを２サイクル以上行う工程。 Furthermore, a control structure for cleaning the inside of the multi-layered diaphragm electrolytic tank 7, etc., in the alkaline electrolyzed water production apparatus 10, etc., having any of the configurations described above, is used to wash scale generated in the diaphragm-containing electrolytic tank 1, etc. An electrolytic cell cleaning control structure of an alkaline electrolyzed water producing apparatus, which controls the cleaning process P10 shown in <A> below for removing, is also within the scope of the present invention.
<A> In the cleaning process P10, etc., one cycle is the cleaning process P1, etc. in the cathode chamber 5, etc. - the negative phase voltage loading process P2, etc. after the cleaning process P1, etc., and this process is performed for two or more cycles.
　以下、本発明の実施例を説明するが、本発明がかかる実施例に限定されるものではない。
　図５は、本発明実施例アルカリ性電解水製造装置の構成をその多層型有隔膜電解槽の構成を中心にして示す説明図である。図示するように本実施例アルカリ性電解水製造装置５１０は、三の有隔膜電解槽５１、５１、５１が連続してなる多層型有隔膜電解槽５７と、多層型有隔膜電解槽５７内の洗浄を制御するための制御部（図示せず）とを備えてなる構成であって、各有隔膜電解槽５１は、陽極５２を有し電解質水溶液流通用である陽極室５３と、陰極５４を有し製造するアルカリ性電解水の原水流通用である陰極室５５と、陽極室５３および陰極室５５の間に挟設された陽イオン交換膜（隔膜）５６とを備えてなり、有隔膜電解槽５１中に発生するスケールを洗浄除去するための所定の洗浄処理工程、すなわち既に述べた＜Ａ＞または＜Ａ’＞が制御部によりなされる構成である。 Examples of the present invention will be described below, but the present invention is not limited to such examples.
FIG. 5 is an explanatory view showing the configuration of the alkaline electrolyzed water producing apparatus of the embodiment of the present invention, centering on the configuration of the multi-layer type diaphragm electrolytic cell. As shown in the figure, the alkaline electrolyzed water production apparatus 510 of the present embodiment includes a multi-layered diaphragm-type electrolyzer 57 in which three diaphragm- type electrolyzers 51, 51, 51 are continuously arranged, and cleaning inside the multi-layered diaphragm-type electrolyzer 57. Each diaphragm electrolytic cell 51 has an anode chamber 53 for circulating an aqueous electrolyte solution having an anode 52, and a cathode 54. A cathode chamber 55 for circulating the raw water of the alkaline electrolyzed water to be produced, and a cation exchange membrane (diaphragm) 56 sandwiched between the anode chamber 53 and the cathode chamber 55. A predetermined cleaning process for cleaning and removing scales generated inside, that is, <A> or <A'> described above is performed by the control unit.
　また、図示するように本装置５１０は、各有隔膜電解槽５１の陰極室５５に通す原水（処理水）を供給するための原水（処理水）供給口ＯＷ、原水の電解処理の結果生成されるアルカリ性電解水を吐出するためのアルカリ性電解水吐出口ＰＷ、各有隔膜電解槽５１の陽極室５３に通す電解質溶液を供給するための電解質溶液供給口ＥＳ、電解処理により副成する電解水を排出するための電解質液排水口ＤＲを備える。 As shown in the figure, the apparatus 510 includes a raw water (treated water) supply port OW for supplying raw water (treated water) to be passed through the cathode chamber 55 of each diaphragm electrolytic cell 51, and an alkaline electrolyzed water outlet PW for ejecting alkaline electrolyzed water, an electrolyte solution supply port ES for supplying an electrolyte solution to be passed through the anode chamber 53 of each diaphragm-equipped electrolytic cell 51, and electrolyzed water produced as a by-product of electrolysis. It has an electrolyte solution outlet DR for discharging.
　かかる構成の本実施例アルカリ性電解水製造装置５１０においては、次のようなアルカリ性電解水製造の通常運転がなされる。すなわち、原水（処理水）供給口ＯＷには各有隔膜電解槽５１の陰極室５５に通す原水（処理水）が供給され、一方、電解質溶液供給口ＥＳに各有隔膜電解槽５１の陽極室５３に通す電解質溶液が供給され、これらが多層型有隔膜電解槽５７に流通している状態で、各有隔膜電解槽５１の機能によって原水の電解処理がなされてアルカリ性電解水が生成し、アルカリ性電解水吐出口ＰＷから吐出され、一方、副成する電解水は電解質液排水口ＤＲから排出される。この通常運転の前段階で、この後述べる洗浄処理工程が制御部によりなされる。 In the alkaline electrolyzed water production apparatus 510 of this embodiment having such a configuration, the following normal operation for producing alkaline electrolyzed water is performed. That is, the raw water (treated water) supply port OW is supplied with raw water (treated water) passing through the cathode chamber 55 of each diaphragm electrolytic cell 51, while the electrolytic solution supply port ES is supplied with the anode chamber of each diaphragm electrolytic cell 51. 53 is supplied, and in a state in which these are circulating in the multi-layered diaphragm-type electrolyzer 57, the raw water is electrolyzed by the function of each diaphragm-equipped electrolyzer 51 to generate alkaline electrolyzed water. The electrolyzed water is discharged from the electrolyzed water discharge port PW, while the by-produced electrolyzed water is discharged from the electrolyte liquid discharge port DR. Prior to this normal operation, the controller performs a cleaning process, which will be described later.
　図６は、実施例アルカリ性電解水製造装置の制御構造を示すブロック図である。また、図７は、実施例アルカリ性電解水製造装置の制御フロー図である。これらに基づき、洗浄処理工程を構成する各工程１．～５．を追いながら説明する。 FIG. 6 is a block diagram showing the control structure of the alkaline electrolyzed water production apparatus of the embodiment. Moreover, FIG. 7 is a control flow diagram of the alkaline electrolyzed water producing apparatus of the embodiment. Based on these, each process 1. which constitutes the cleaning treatment process. ~ 5. I will explain while following.
工程１．電極および原水・電解質液によるリセット予洗制御
　Ｖ１三方弁の方向を排水側へ開放し、その後、陰極室・陽極室にそれぞれ、原水・電解質液をポンプＰ１、Ｐ２により一定時間（例．３８０ｍＬ／ｍｉｎ）供給する。その後、陰極室を帯電させ、滞留浮遊したアルカリ性電解水およびカルシウムスケール、マグネシウムスケール等の水溶性金属類を排出することで、陰極室内の予洗い（リセット洗浄）とする。本工程１は、逆転（逆相）電圧負荷時における、残留スケールによる電蝕現象を予防する効果を有する。 Step 1. Reset pre-washing control by electrodes and raw water/electrolyte liquid Open the direction of the V1 three-way valve to the drainage side, then pump raw water/electrolyte liquid to the cathode chamber and anode chamber respectively for a certain period of time (e.g. 380 mL/min ) supply. After that, the cathode chamber is electrified, and the retained and floating alkaline electrolyzed water and water-soluble metals such as calcium scale and magnesium scale are discharged to pre-wash (reset washing) the inside of the cathode chamber. This step 1 has the effect of preventing electrical corrosion due to residual scale when a reverse (negative phase) voltage is applied.
工程２．電極コーティングの剥離・破損防止のための逆相段階電圧負荷制御
　工程１終了後、原水・電解質液の水量を一定量（例．２００ｍｌ／ｍｉｎ）供給しながら、陽極・陰極に負荷する電圧を、一定時間段階制御によって昇圧する。段階制御は、積層されたスケールの確実な除去と急激な電圧変化による陽イオン交換膜およびイリジウム等コーティングの破損を防止する効果を有する。 Step 2. Reverse-phase voltage load control to prevent peeling and damage of the electrode coating The voltage is boosted by stepwise control for a certain period of time. The stepwise control has the effect of reliably removing the deposited scale and preventing damage to the cation exchange membrane and the iridium coating due to sudden voltage changes.
　電圧昇圧の段階制御の例を示す。
　直流電源ユニットＤＣＵ１により、下記３段階の制御を行う。
　　制御１）設定電流ＤＣ１０ＶＡ、１ｍｉｎ
　　制御２）　〃　　ＤＣ２０ＶＡ、１ｍｉｎ
　　制御３）　〃　　ＤＣ２８ＶＡ、１ｍｉｎ
　いずれの制御においても、直流電流計ＶＣ１による監視計測を行い、設定電流（規定値）±５％を規定値範囲内とする。 An example of stepwise control of voltage boost is shown.
The following three stages of control are performed by the DC power supply unit DCU1.
Control 1) Setting current DC10VA, 1min
Control 2) 〃 DC20VA, 1min
Control 3) 〃 DC28VA, 1min
In any control, monitoring measurement is performed by the DC ammeter VC1, and the set current (specified value) ±5% is within the specified value range.
工程３．逆相段階電圧負荷制御後の陽極室内および陰極室内の再洗浄制御
　工程２実施の際に陰極および陽イオン交換膜の陰極側より剥離・滞留・浮遊したカルシウムスケールやマグネシウムスケール等の水溶性金属類を排出するとともに、陽極側に生成されたアルカリ性電解水を排出する。工程１と同様の制御によって排出する。次工程において陽極側にアルカリ性電解水が残留してしまうと、電圧負荷による電子移動量が多くなり、陽イオン交換膜の穿孔やピンホールが発生してしまう。本工程はこれらを防止する効果を有する。 Step 3. Re-cleaning control of the anode chamber and the cathode chamber after reversed-phase voltage load control Water-soluble metals such as calcium scale and magnesium scale peeled off, retained, and floated from the cathode side and the cathode side of the cation exchange membrane during step 2 is discharged, and the alkaline electrolyzed water generated on the anode side is discharged. It is discharged by the same control as in step 1. If the alkaline electrolyzed water remains on the anode side in the next step, the amount of electron transfer due to voltage load increases, and perforations and pinholes occur in the cation exchange membrane. This step has the effect of preventing these.
工程４．陽イオン交換膜の電蝕ピンホール防止のための再逆相段階電圧負荷制御
　工程３終了後、工程２と同様に一定時間段階制御によって昇圧し、陰極と陽極間の直流電流値（ＤＣ／ＶＡ）および電圧値を計測する。　これは洗浄工程による最終チェック工程となり、品質低下・故障・破損等の有無を確認する効果を有する。 Step 4. Re-negative-phase step-by-step voltage load control for prevention of electrolytic pinholes in the cation exchange membrane. ) and the voltage value. This is the final check process by the cleaning process, and has the effect of confirming the presence or absence of quality degradation, failure, damage, and the like.
工程５．機器および品質保護のための電圧正常運転監視制御
　工程４の計測時に直流電流値および電圧値が規定値内である場合には、操作モニターに「洗浄終了」の表示を指令し、正常運転が可能な状態であることを表示する。直流電流値および電圧値が規定値±５％を超える差異が発生した場合には、操作モニターに異常電圧の表示を指令し、機器および品質保護のための表示をする。 Step 5. Voltage normal operation monitoring control for equipment and quality protection If the DC current value and voltage value are within the specified values at the time of measurement in process 4, the operation monitor is commanded to display "Cleaning completed" and normal operation is possible. state. If the DC current value or voltage value differs from the specified value ±5%, the operation monitor is instructed to display an abnormal voltage, and a display is made to protect the equipment and quality.
　なお、工程２の段階制御の監視計測結果が、規定値よりも高圧または低圧（±５％を超える）である場合には、操作モニターに異常電圧の表示を指令し、機器および品質保護のための表示を行い、修理・部品交換等を促すこととする。ここで、「規定値よりも高圧または低圧（±５％を超える）である場合」とは、直流電流値および電圧値が規定値±５％を超える差異が生じた場合」のことである（以下も同様）。 In addition, if the monitoring measurement result of the step-by-step control in process 2 is higher or lower than the specified value (exceeding ± 5%), the operation monitor will be instructed to display abnormal voltage, and for equipment and quality protection shall be displayed to encourage repair or replacement of parts. Here, "when the voltage is higher or lower than the specified value (exceeds ± 5%)" is when the difference between the DC current value and the voltage value exceeds the specified value ± 5%" ( The same applies below).
　また、工程４の段階制御の監視計測結果が規定値範囲内の場合には、操作モニターに「洗浄終了」の表示を指令し、正常運転が可能の状態を表示する。一方、規定値よりも高圧または低圧（±５％を超える）である場合には、操作モニターに異常電圧の表示を指令し、機器および品質保護のための表示を行い、修理・部品交換等を促すこととする。 In addition, if the monitoring measurement results of the step-by-step control in process 4 are within the specified value range, the operation monitor is instructed to display "cleaning finished" to indicate that normal operation is possible. On the other hand, if the voltage is higher or lower than the specified value (exceeding ±5%), command the operation monitor to display abnormal voltage, display for equipment and quality protection, and repair or replace parts. I will encourage you to do so.
　なお、工程２、工程４において異常電圧の表示がなされた場合、これに対してリセット処理（リセットスイッチ（ＳＷ））を行って、電解水生成を開始させたり、洗浄処理工程を再度開始させたりすることもできる。しかしながら本装置使用者としては、機器および品質保護のためには、表示が促す通りに修理・部品交換等を行うことが望ましい。 If an abnormal voltage is displayed in steps 2 and 4, a reset process (reset switch (SW)) is performed to start generation of electrolyzed water or restart the cleaning process. You can also However, in order to protect the equipment and quality, it is desirable for the user of this device to carry out repairs, parts replacement, etc., as prompted by the display.
　本発明のアルカリ性電解水製造装置、その電解槽洗浄方法、および電解槽洗浄制御構造によれば、多層型有隔膜電解槽によるアルカリ性電解水製造において、陽極と陰極を逆相し電圧をかけた場合の導電性スケールによる隔膜における電蝕現象発生を有効に防止でき、これにより隔膜ピンホールの発生や電極のコーティング破損を有効に防止でき、生成する電解水の品質を有効に安定化でき、装置の故障も有効に防止できる。したがって、農畜産業・食品加工業・半導体製造等の工業・環境関連産業・飲食業・クリーニング業等のアルカリ性電解水利用分野、電解水製造装置製造分野、およびこれらのいずれかに関連する全分野において、産業上利用性が高い発明である。 According to the alkaline electrolyzed water producing apparatus, the electrolytic cell cleaning method, and the electrolytic cell cleaning control structure of the present invention, in the production of alkaline electrolyzed water using a multi-layered diaphragm-type electrolytic cell, when a voltage is applied to the anode and the cathode in opposite phases. It is possible to effectively prevent the occurrence of electrolytic corrosion in the diaphragm due to the conductive scale of the diaphragm, thereby effectively preventing the occurrence of diaphragm pinholes and breakage of the electrode coating, effectively stabilizing the quality of the generated electrolyzed water, and improving the performance of the equipment. Failures can also be effectively prevented. Therefore, in the field of alkaline electrolyzed water use such as agriculture and livestock industry, food processing industry, semiconductor manufacturing industry, environment-related industry, restaurant industry, cleaning industry, electrolyzed water manufacturing equipment manufacturing field, and all fields related to any of these , is an invention with high industrial applicability.
１、４１、５１…有隔膜電解槽
２、４２、５２…陽極
３、４３、５３…陽極室
４、４４、５４…陰極
５、４５、５５…陰極室
６、４６、５６…陽イオン交換膜（隔膜）
７、４７、５７…多層型有隔膜電解槽
８、４８…制御部
１０、４１０、５１０…アルカリ性電解水製造装置
４９…表示部
ＤＲ…電解質液排水口
ＥＳ…電解質溶液供給口
ＯＷ…原水供給口
Ｐ１、Ｐ１１、Ｐ２１…洗浄過程
Ｐ２、Ｐ１２、Ｐ２２…逆相電圧負荷過程
Ｐ１０、Ｐ２１０、Ｐ３１０…洗浄処理工程
Ｐ１３、Ｐ２３…評価過程
ＰＷ…アルカリ性電解水吐水口
　 Reference Signs List 1, 41, 51 Diaphragm electrolytic cell 2, 42, 52 Anode 3, 43, 53 Anode chamber 4, 44, 54 Cathode 5, 45, 55 Cathode chamber 6, 46, 56 Cation exchange membrane (diaphragm)
7, 47, 57 Multi-layer diaphragm-type electrolytic baths 8, 48 Control unit 10, 410, 510 Alkaline electrolyzed water production device 49 Display unit DR Electrolyte solution outlet ES Electrolyte solution supply port OW Raw water supply port P1, P11, P21... Cleaning process P2, P12, P22... Reverse phase voltage load process P10, P210, P310... Cleaning treatment process P13, P23... Evaluation process PW... Alkaline electrolyzed water spout

Claims (8)

  1. 二段以上の有隔膜電解槽からなる多層型有隔膜電解槽と、該多層型有隔膜電解槽内の洗浄を制御するための制御部とを備えてなるアルカリ性電解水製造装置であって、該有隔膜電解槽は、陽極を有し電解質水溶液流通用である陽極室と、陰極を有し製造するアルカリ性電解水の原水流通用である陰極室と、該陽極室および該陰極室の間に挟設された陽イオン交換膜とを備えてなり、該有隔膜電解槽中に発生するスケールを洗浄除去するための下記＜Ａ＞に示す洗浄処理工程が該制御部によりなされることを特徴とする、アルカリ性電解水製造装置。
    　＜Ａ＞　洗浄処理工程は、該陰極室内の洗浄過程－該洗浄過程の後の逆相電圧負荷過程　を１サイクルとし、これを２サイクル以上行う工程である。     An alkaline electrolyzed water producing apparatus comprising: a multi-layered diaphragm-type electrolyzer consisting of two or more stages of diaphragm-type electrolysers; The diaphragm-equipped electrolytic cell comprises an anode chamber having an anode for circulating an aqueous electrolyte solution, a cathode chamber having a cathode for circulating the raw water of the alkaline electrolyzed water to be produced, and sandwiched between the anode chamber and the cathode chamber. and a cation exchange membrane provided therein, and a cleaning treatment step shown in <A> below for cleaning and removing scale generated in the diaphragm electrolytic cell is performed by the control unit. , alkaline electrolyzed water production equipment.
    <A> In the cleaning process, one cycle is the process of cleaning the inside of the cathode chamber and the process of applying the negative-phase voltage after the cleaning process, and this cycle is repeated two or more times.
  2. 前記サイクルが２回行われる、すなわち下記＜Ａ’＞に示す洗浄処理工程が行われることを特徴とする、請求項１に記載のアルカリ性電解水製造装置。
    　＜Ａ’＞　該陰極室内の予備的な洗浄過程であるところの予備洗浄過程、その後の逆相電圧負荷過程、その後の該陰極室内の洗浄過程であるところの再洗浄過程、その後の逆相電圧負荷過程であるところの再逆相電圧負荷過程     2. The alkaline electrolyzed water production apparatus according to claim 1, wherein the cycle is performed twice, that is, the cleaning process shown in <A'> below is performed.
    <A'> A pre-cleaning process, which is a preliminary cleaning process for the inside of the cathode chamber, a subsequent reverse-phase voltage application process, a subsequent re-cleaning process, which is a cleaning process for the inside of the cathode chamber, followed by a reverse-phase voltage Re-negative-sequence voltage load process where the load process is
  3. 前記洗浄処理工程の逆相電圧負荷過程では、電圧が段階的に昇圧されることを特徴とする、請求項１、２のいずれかに記載のアルカリ性電解水製造装置。 3. The apparatus for producing alkaline electrolyzed water according to claim 1, wherein the voltage is increased stepwise in the reverse-phase voltage loading process of the cleaning process.
  4. 前記洗浄処理工程の少なくともいずれかの逆相電圧負荷過程の後に、電気的な検知に基づき洗浄効果を評価する評価過程を備えることを特徴とする、請求項１、２、３のいずれかに記載のアルカリ性電解水製造装置。 4. The method according to any one of claims 1, 2, and 3, further comprising an evaluation step of evaluating a cleaning effect based on electrical detection after at least one of the reverse-phase voltage loading steps of the cleaning treatment step. alkaline electrolyzed water production equipment.
  5. 前記評価過程による洗浄効果評価結果を示す表示部を有することを特徴とする、請求項４に記載のアルカリ性電解水製造装置。 5. The apparatus for producing alkaline electrolyzed water according to claim 4, further comprising a display unit for indicating the cleaning effect evaluation result obtained by the evaluation process.
  6. 前記評価過程により所定の洗浄効果が確認された後、アルカリ性電解水の製造がなされるよう構成されていることを特徴とする、請求項４、５のいずれかに記載のアルカリ性電解水製造装置。 6. The apparatus for producing alkaline electrolyzed water according to claim 4, wherein the alkaline electrolyzed water is produced after a predetermined cleaning effect is confirmed in the evaluation process.
  7. 請求項１、２、３、４、５、６のいずれかに記載するアルカリ性電解水製造装置における電解槽洗浄方法であって、該有隔膜電解槽中に発生するスケールを洗浄除去するための下記＜Ａ＞に示す洗浄処理工程を行うことを特徴とする、アルカリ性電解水製造装置の電解槽洗浄方法。
    　＜Ａ＞　洗浄処理工程は、該陰極室内の洗浄過程－該洗浄過程の後の逆相電圧負荷過程　を１サイクルとし、これを２サイクル以上行う工程である。     A method for cleaning an electrolytic cell in an alkaline electrolyzed water production apparatus according to any one of claims 1, 2, 3, 4, 5, and 6, comprising: A method for cleaning an electrolytic cell of an alkaline electrolyzed water production apparatus, characterized in that the cleaning treatment step shown in <A> is performed.
    <A> In the cleaning process, one cycle is the process of cleaning the inside of the cathode chamber and the process of applying the negative-phase voltage after the cleaning process, and this cycle is repeated two or more times.
  8. 陽極を有し電解質水溶液流通用である陽極室、
    陰極を有し製造するアルカリ性電解水の原水流通用である陰極室、および、
    該陽極室ならびに該陰極室の間に挟設された陽イオン交換膜とからなる該有隔膜電解槽を、二段以上備えてなる多層型有隔膜電解槽を有するアルカリ性電解水製造装置における、該多層型有隔膜電解槽内洗浄用の制御構造であって、
    該有隔膜電解槽中に発生するスケールを洗浄除去するための下記＜Ａ＞に示す洗浄処理工程を制御することを特徴とする、アルカリ性電解水製造装置の電解槽洗浄制御構造。
    　＜Ａ＞　洗浄処理工程は、該陰極室内の洗浄過程－該洗浄過程の後の逆相電圧負荷過程　を１サイクルとし、これを２サイクル以上行う工程である。
    　     an anode chamber having an anode and for circulating an aqueous electrolyte solution;
    a cathode chamber which has a cathode and is for raw water distribution of the alkaline electrolyzed water to be produced; and
    In an alkaline electrolyzed water producing apparatus having a multi-layer type diaphragm-type electrolytic cell comprising two or more stages of the diaphragm-type electrolytic cell comprising a cation exchange membrane sandwiched between the anode chamber and the cathode chamber. A control structure for cleaning the inside of a multi-layer diaphragm electrolytic cell, comprising:
    An electrolytic cell cleaning control structure for an alkaline electrolyzed water production apparatus, characterized by controlling a cleaning process shown in <A> below for cleaning and removing scale generated in the diaphragm electrolytic cell.
    <A> In the cleaning process, one cycle is the process of cleaning the inside of the cathode chamber and the process of applying the negative-phase voltage after the cleaning process, and this cycle is repeated two or more times.
PCT/JP2021/043505 2021-06-25 2021-11-26 Device for producing alkaline electrolyzed water, method for purifying electrolysis tank of same, and electrolysis tank purification control structure WO2022269945A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06320162A (en) * 1993-05-14 1994-11-22 Brother Ind Ltd Water preparing apparatus
JPH11165174A (en) * 1997-12-01 1999-06-22 Fuji Electric Co Ltd Method for controlling energization of ionic water generator
US20040094406A1 (en) * 2002-11-15 2004-05-20 Yuichi Sawada Apparatus for production of strong alkali and acid electrolytic solution
JP2006305568A (en) * 2005-04-27 2006-11-09 Winia Mando Inc Electrolytic cell, ionic water purifier adopting the same and method for cleaning the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06320162A (en) * 1993-05-14 1994-11-22 Brother Ind Ltd Water preparing apparatus
JPH11165174A (en) * 1997-12-01 1999-06-22 Fuji Electric Co Ltd Method for controlling energization of ionic water generator
US20040094406A1 (en) * 2002-11-15 2004-05-20 Yuichi Sawada Apparatus for production of strong alkali and acid electrolytic solution
JP2006305568A (en) * 2005-04-27 2006-11-09 Winia Mando Inc Electrolytic cell, ionic water purifier adopting the same and method for cleaning the same

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