JP5432103B2 - Electrolyzed water manufacturing apparatus and manufacturing method thereof - Google Patents

Description

  The present invention relates to a manufacturing apparatus and a manufacturing method for manufacturing electrolyzed water, and in particular, acidic or alkaline electrolyzed water can be generated selectively and singly in a diaphragm two-chamber electrolyzer. The present invention relates to an electrolyzed water production apparatus and method capable of producing electrolyzed water having a pH and a concentration.

Conventional electrolyzed water producing apparatuses capable of producing acidic electrolyzed water and alkaline electrolyzed water include a diaphragm two-chamber type manufacturing apparatus and a diaphragm three-chamber type manufacturing apparatus.
The diaphragm-two-chamber manufacturing apparatus includes, for example, an anode chamber and a cathode chamber that are arranged to face each other with a cation permeable membrane interposed therebetween as disclosed in Patent Document 1, and the anode chamber includes saline solution. Is supplied, and only the electrolytic raw water is supplied to the cathode chamber. Then, by applying a direct current to the electrode, acidic electrolyzed water containing hypochlorous acid is generated in the anode chamber, and alkaline electrolyzed water is generated in the cathode chamber.

  Further, as disclosed in Patent Document 2, the two-diaphragm three-chamber manufacturing apparatus is a water electrolysis apparatus including an electrolytic cell provided with an anode chamber, an intermediate chamber, and a cathode chamber by partitioning with two diaphragms. In this apparatus, raw water is supplied to the anode chamber and the cathode chamber, and the intermediate chamber is filled with a high concentration aqueous electrolyte solution. In this apparatus, as in the diaphragm type two-chamber apparatus, acidic electrolyzed water is generated in the anode chamber, and alkaline electrolyzed water is generated in the cathode chamber.

JP 2005-329375 A JP 2000-246249 A

  However, in the apparatus disclosed in Patent Document 1 and Patent Document 2, since both acidic electrolyzed water and alkaline electrolyzed water are generated at the same time, when only one electrolyzed water is required, the other electrolyzed water is It becomes unnecessary and must be discarded. In addition, since the residence time of the raw electrolytic water and aqueous electrolyte solution is very short in each electrode chamber, a sufficient electrolytic reaction occurs near the electrode, but the chance of contact with the electrode is extremely reduced at a distance from the electrode. There is a problem that the raw electrolytic water and the aqueous electrolyte solution are discharged together with the electrolyzed water while remaining unelectrolyzed.

  Further, in the conventional diaphragm two-chamber electrolysis apparatus, the raw electrolytic water is supplied to one of the anode chamber or the negative cathode chamber, the aqueous electrolyte solution is supplied to the other, and the acidic or alkaline is supplied only from the electrolytic chamber supplied with the raw electrolytic water. There was no idea of generating electrolyzed water.

Further, a diaphragm two-chamber type in which raw electrolytic water is supplied to one of the anode chamber or the negative cathode chamber, an aqueous electrolyte solution is supplied to the other, and acidic or alkaline electrolytic water can be generated only from the electrolyte supplied with the raw electrolytic water. There was also no idea that two electrolyzers were combined and acidic electrolyzed water was produced alone in one electrolyzer and alkaline electrolyzed water was produced alone in the other electrolyzer.
Furthermore, there has been no idea of circulating and supplying the aqueous electrolyte solution to one electrolytic chamber of such an electrolytic device.

  The present invention has been made in view of such problems, and can selectively generate acidic or alkaline electrolyzed water alone with a diaphragm and two-chamber electrolyzer, and improve electrolysis efficiency. An object of the present invention is to provide an apparatus for producing electrolyzed water that can produce electrolyzed water having a desired pH and concentration.

  In order to achieve the above object, the electrolyzed water producing apparatus of the present invention includes a first electrolyzer having a cation permeable membrane separating an anode chamber and a cathode chamber, and an anion permeation separating an anode chamber and a cathode chamber. A second electrolysis apparatus having a membrane, and a supply tank for supplying an aqueous electrolyte solution to the first electrolysis apparatus and the second electrolysis apparatus are integrally provided.

  In the electrolyzed water production apparatus of the present invention, the first electrolyzer and the second electrolyzer include a plurality of electrodes for connecting either the anode chamber or the cathode chamber and the supply tank. It has a communication hole.

  In the electrolyzed water production apparatus of the present invention, the first electrolyzer and the second electrolyzer have a power supply independent from each other, and can individually control the generation of electrolyzed water. It is characterized by having.

  In the electrolyzed water production apparatus of the present invention, the first electrolyzer and the second electrolyzer include a supply port for supplying raw electrolytic water and a discharge port for discharging the generated electrolyzed water. Respectively.

  In the electrolyzed water production apparatus of the present invention, the discharge port is provided with an adjustment valve for adjusting the discharge amount.

  The electrolyzed water production apparatus of the present invention is characterized in that the first electrolyzer and the second electrolyzer are different in size of the apparatus body.

  The electrolyzed water production apparatus of the present invention is characterized in that the discharge port of the first electrolyzer and the second electrolyzer is in communication with a communication pipe.

  In the electrolyzed water production apparatus of the present invention, the communication pipe is provided with a flow rate adjusting valve for adjusting the flow rate of the electrolyzed water in the pipe.

  In the electrolyzed water production apparatus of the present invention, a plurality of the first electrolyzer and the second electrolyzer are connected to the supply tank, and the first electrolyzer and the second electrolyzer are connected. The electrolysis apparatus is in communication with each other as a pair.

  In the electrolyzed water production apparatus of the present invention, the first electrolyzer and the second electrolyzer are different in power supply amount, so that the amount of electrolyzed water generated, concentration, pH, redox potential Can be adjusted.

  The electrolyzed water production apparatus of the present invention further includes a recovery chamber for recovering the hydrogen gas generated in the cathode chamber above the cathode chambers of the first electrolyzer and the second electrolyzer. The recovery chamber has a gas-liquid separation part for separating hydrogen gas from water vapor and a discharge part for discharging the separated hydrogen gas to the outside.

  In the electrolyzed water production apparatus of the present invention, the supply tank circulates and supplies the aqueous electrolyte solution to the first electrolyzer and the second electrolyzer.

  In the electrolyzed water production apparatus of the present invention, the electrodes of the first electrolyzer and the second electrolyzer are formed of a porous body, and there are gaps between the anode chamber and the cathode chamber. The electrolytic raw water and the electrolytic aqueous solution are allowed to pass through the porous body to conduct an electrolytic reaction.

  In the electrolyzed water production apparatus of the present invention, the electrode composed of the porous body is a sintered body in which metallic titanium particles and fibers are solidified in a porous state.

  In the electrolyzed water production apparatus of the present invention, the electrode composed of the porous body has an average pore diameter ranging from 0.3 mm to 3 mm, a porosity of 20% or more, and a thickness. It is characterized by being 1 mm or more.

  In the electrolyzed water production apparatus of the present invention, the electrodes provided in the anode chamber and the cathode chamber may be a combination of the electrodes of the porous body or a combination of the electrode of the porous body and a flat electrode. A combination of the electrode of the porous body and a punched electrode or a half punched electrode.

  In the electrolyzed water production apparatus according to the present invention, the anode chamber and the cathode chamber have a volume capable of accommodating the electrode having the three-dimensional porous shape having a thickness.

  According to the present invention, two electrolytic devices provided with different ion permeable membranes are integrated, a supply tank for supplying an aqueous electrolyte solution is communicated, and electrolytic raw water is supplied only to an electrode chamber for generating electrolytic water. Thus, for example, in a diaphragm two-chamber electrolysis device employing an anion permeable membrane as a diaphragm, acidic electrolyzed water containing only high-purity hypochlorous acid without containing an electroless electrolytic substance, or a cation permeable membrane Production of alkaline electrolyzed water containing high-purity sodium hydroxide can be realized with a diaphragm-two-chamber electrolyzer from a diaphragm-two-chamber electrolyzer adopting as a diaphragm.

  In addition, since only one of the two electrolyzers having different ion permeable membranes can be operated, either required acidic or alkaline electrolyzed water can be generated at a desired pH or concentration. Furthermore, by adopting a porous body electrode, the electrolyzed raw water supplied to the anode chamber and the cathode chamber becomes a large resistance to the flow of the electrolyzed raw water due to the complicated shape of the porous body, and slowly moves through the porous body. Since it moves and contacts the electrode surface over time, sufficient current efficiency (coulomb amount) can be given to the electrolyzed raw water containing ions, preventing deposition of scale on the electrode surface by precipitation or dissolution function. can do. Thereby, air bubbles are generated on the electrode surface, and the air bubbles inhibit the contact between the raw electrolytic water and the electrode surface, thereby preventing the metal contained in the raw electrolytic water from adhering to the cathode. Since the contact time between the raw electrolytic water and the electrode is long, it is possible to realize efficient and low power consumption electrolysis. Thereby, electrolysis efficiency can be improved dramatically. Furthermore, accompanying electrolysis with low power, the temperature rise of the electrode body can be suppressed, and deterioration of the delicate ion permeable membrane along with the electrode can be prevented.

It is the figure which showed the structure of the manufacturing apparatus of the electrolyzed water which concerns on 1st Embodiment. 2 (a) is a diagram showing the configuration of the porous electrode, and FIG. 2 (b) is a diagram showing the behavior of raw water and electrolytic ionic substances in the first electrolysis apparatus. (C) is the figure which showed the behavior of the raw | natural water and electrolytic ionic substance in a 2nd electrolysis apparatus. It is the figure which showed the structure of the manufacturing apparatus of the electrolyzed water which concerns on 2nd Embodiment. It is the figure which showed the structure of the manufacturing apparatus of the electrolyzed water which concerns on 3rd Embodiment. It is the figure which showed the structure of the manufacturing apparatus of the electrolyzed water which concerns on 4th Embodiment. It is the figure which showed the structure of the manufacturing apparatus of the electrolyzed water which concerns on 5th Embodiment. It is the figure which showed the structure of the manufacturing apparatus of the electrolyzed water which concerns on 6th Embodiment. It is the figure which showed the structure of the manufacturing apparatus of the electrolyzed water which concerns on 7th Embodiment.

  Next, the electrolyzed water production apparatus and method according to the present embodiment will be described with reference to the drawings.

<First Embodiment>
(Schematic configuration of electrolyzer)
FIG. 1 is a diagram illustrating an apparatus for producing electrolyzed water according to the first embodiment.
As shown in FIG. 1, the electrolyzed water production apparatus according to the first embodiment includes a first electrolyzer 100 that generates alkaline electrolyzed water, a second electrolyzer 200 that generates acidic electrolyzed water, and these. It is comprised from the supply tank 300 which supplies electrolyte aqueous solution (for example, sodium chloride aqueous solution) with respect to each one electrode chamber of the 1st and 2nd electrolyzer 100,200. The first and second electrolyzers 100 and 200 are integrated via a partition wall 400. In addition, the supply tank 300 is configured to be able to supply an aqueous electrolyte solution at one or both of the first electrolyzer 100 and the second electrolyzer.

(First electrolyzer)
The first electrolysis apparatus 100 is provided with an anode chamber 101 containing an anode 104 and a cathode chamber 102 containing a cathode 105. The anode chamber 101 is separated from the anode chamber 101 and the anode chamber 101 at the center. A cation permeable membrane 103 is provided for transmitting only cations contained in the aqueous electrolyte solution supplied to.
The anode 104 and the cathode 105 are composed of porous electrodes, which will be described later, and are accommodated in the anode chamber 101 and the cathode chamber 102 so as to be filled with almost no gap. And the anode 104 and the cathode 105 are connected to the control part 10 provided with a power supply. In addition, a supply port 106 for supplying a saturated electrolyte aqueous solution is provided in the upper part of the anode chamber 101 so as to communicate with the supply tank 300, and a recovery port for recovering the electrolyte aqueous solution that has passed through the anode chamber 101 to the supply tank 300. 107 is provided.
On the other hand, a raw water supply port 108 for supplying electrolytic raw water to the cathode chamber 102 is provided at the upper part of the cathode chamber 102, and a discharge outlet for discharging alkaline electrolytic water generated in the cathode chamber 102 at the lower part. 109 is provided. In addition, although the structure which provided one each of the raw | natural water supply port 108 and the discharge port 109 is shown in the figure, it is not necessarily restricted to this, You may provide multiple each. In addition, the diameters of the raw water supply port 108 and the discharge port 109 may be different.

(Second electrolytic device)
Similar to the first electrolyzer 100, the second electrolyzer 200 is provided with an anode chamber 201 containing the anode 204 and a cathode chamber 202 containing the cathode 205, and the anode chamber 201 and the cathode in the center. An anion permeable membrane 203 that separates the chamber 202 and allows only anions contained in the aqueous electrolyte solution supplied to the cathode chamber 202 to pass therethrough is provided.
The anode 204 and the cathode 205 are composed of electrodes of a porous body, which will be described later, and are accommodated in the anode chamber 201 and the cathode chamber 202 so as to be filled with almost no gap. And the anode 204 and the cathode 205 are connected to the control part 20 provided with a power supply. In addition, a supply port 206 for supplying a saturated electrolyte aqueous solution is provided in the upper part of the cathode chamber 202 so as to communicate with the supply tank 300, and a recovery port for recovering the electrolyte aqueous solution that has passed through the cathode chamber 202 to the supply tank 300. 207 is provided.
On the other hand, a raw water supply port 208 for supplying electrolytic raw water to the anode chamber 201 is provided in the upper portion of the anode chamber 201, and a discharge port for discharging acidic electrolytic water generated in the anode chamber 201 in the lower portion. 209 is provided. In addition, although the structure which provided one each of the raw | natural water supply port 208 and the discharge port 209 is shown in the figure, it is not necessarily restricted to this, You may provide multiple each. Further, the raw water supply port 208 and the discharge port 209 may have different diameters.

The electrode chambers of the first electrolyzer 100 and the second electrolyzer 200 are preferably vertically long and desirably have a height larger than the width in the orthogonal direction. The ratio of the height to the width of the electrode chamber (height / width) can be, for example, 1.5 or more, preferably 1.5 to 5.0. Thus, by making the electrode chambers of the first electrolyzer 100 and the second electrolyzer 200 vertically long, the contact time between the generated and rising chlorine gas (Cl ₂ ) and water can be lengthened, As a result, the reaction between chlorine and water can be performed reliably.

  In addition, the control parts 10 and 20 which the 1st electrolyzer 100 and the 2nd electrolyzer 200 have can adjust the electric energy supplied with respect to each electrode. For example, by changing the power supply amount between the first electrolyzer 100 and the second electrolyzer 200, the concentration, pH, oxidation-reduction potential, etc. of the electrolyzed water produced by each electrolyzer can be adjusted. .

(Supply tank)
The supply tank 300 contains a saturated electrolyte aqueous solution. The supply tank 300 is supplied with a saturated electrolyte aqueous solution to the pump 301 for supplying the saturated electrolyte aqueous solution to the anode chamber 101 of the first electrolysis device 100 and the cathode chamber 202 of the second electrolysis device 200. The pump 302 is provided. The pump 301 communicates with the supply port 106 provided in the anode chamber 101 of the first electrolysis device 100, and the pump 302 communicates with the supply port 206 provided in the cathode chamber 202 of the second electrolysis device 200. doing. Further, the supply tank 300 communicates with the recovery port 107 of the anode chamber 101 of the first electrolysis apparatus 100, and similarly communicates with the recovery port 207 of the cathode chamber 202 of the second electrolysis apparatus 200.

The supply tank 300 circulates and supplies a saturated electrolyte aqueous solution to the electrode chambers 101 and 202. In the first electrolysis device 100, a cation (Na ⁺⁾ is supplied to the cathode chamber 102 via the cation permeable membrane 103. ), And in the second electrolysis apparatus 200, anions (Cl ⁻ ) are supplied through the anion permeable membrane 203.

Further, the supply tank 300 can supply a saturated electrolyte aqueous solution by opening or closing the pump 301 and the pump 302, either the first electrolyzer 100 or the second electrolyzer 200, or both simultaneously. Thereby, saturated electrolyte aqueous solution can be supplied only with respect to the electrolysis apparatus which produces | generates the electrolyzed water to extract water.
In addition, since the density | concentration of saturated electrolyte aqueous solution in the supply tank 300 becomes thin with time, it can also be set as the structure which always replenishes electrolyte aqueous solution from the outside in order to maintain a fixed density | concentration.

A plurality of first and second electrolyzers 100 and 200 may be connected to the supply tank 300. In this case, the discharge ports 109 and 209 are communicated with each other through the communication pipe 303 as a pair of the first and second electrolyzers 100 and 200.
Thereby, electrolysis water can be produced | generated in large quantities and the produced | generated electrolysis water can be mixed in large quantities.

(electrode)
Next, the behavior of the raw electrolytic water and the electrolytic ionic substance in the electrode and the electrode chamber will be described.
Fig.2 (a) is a figure which shows the structure of an electrode, FIG.2 (b)-(c) is the figure which showed the behavior of the electrolysis raw | natural water and electrolytic ionic substance in an electrode chamber.
As shown in the figure, this porous body electrode is a sintered body in which titanium or stainless steel wire meshes are stacked in multiple layers, or a sintered body in which metallic titanium particles and fibers are solidified in a porous shape, and has a three-dimensional shape. (FIG. 2A). Further, this electrode is accommodated so as to be filled in an electrode chamber having a volume capable of sufficiently accommodating a three-dimensional shape with almost no gap. The porous body electrode has an average pore size in the range of 0.3 mm to 3 mm, a porosity of 20% or more, and a thickness of 1 mm or more. With this configuration, as shown in FIG. 2B, in the first electrolysis apparatus, the saturated electrolyte aqueous solution supplied from the supply tank 300 to the anode chamber 101 can move linearly within the porous electrode. First, while passing through the pores inside the porous body having a large fluid resistance, the anode chamber 101 moves from the upper part to the lower part while slowly contacting the electrodes and the bubbles. Further, by the electrophoresis, the cation (Na ⁺ ) of the electrolytic ionic substance contained in the saturated electrolyte aqueous solution moves to the cathode chamber 102 through the cation permeable membrane 103. At this time, since the saturated electrolyte aqueous solution moves slowly in the anode chamber 101, the cation (Na ⁺ ) can move to the cathode chamber 102 in a high concentration state. (FIG. 2 (b)). Further, in the cathode chamber 102, a sufficient potential is applied to the cation (Na ⁺ ) and the electrolytic raw water (H ₂ O) that have moved to the cathode chamber 102 because the electrolytic raw water slowly moves in the porous electrode. And a good electrolytic reaction is performed.

As shown in FIG. 2C, in the second electrolysis apparatus 200, the saturated electrolyte aqueous solution supplied to the cathode chamber 202 is a porous electrode (cathode 205) from the upper portion to the lower portion of the cathode chamber 202. ) Move slowly inside. At this time, the anion (Cl ⁻ ) of the electrolytic ionic substance contained in the saturated electrolyte aqueous solution selects only the anion through the anion permeable membrane 203 and moves to the anode chamber 201 with high purity. In the anode chamber 201, raw electrolytic water is supplied, and similarly, it slowly moves in the porous electrode (anode 204), so that sufficient anion reaction with the anions (Cl ⁻ ) moving in a high concentration and high purity state occurs. Is performed (FIG. 2 (c)).

  By the way, according to the experiments of the present inventors, the porosity of the porous body electrode described above is such that when the porosity is 20% or less, the fluid resistance is too high, so that the electrolyzed raw water flows smoothly in the porous body electrode. Cannot pass through. Furthermore, the contact area between the raw electrolytic water and the electrode is small, and a sufficient potential cannot be applied.

  However, when the porosity is 20% or more, the electrolytic raw water can smoothly pass through the electrode of the porous body and pass through the electrode, so that a sufficient potential can be given to the electrolytic raw water. Thereby, sufficient electric potential can be given with respect to electrolysis raw water, and hydrogen ion concentration (pH) and oxidation-reduction potential (ORP) can be made high concentration. According to the experiments by the present inventor, it is confirmed that the porosity range of this electrode is preferably 60% to 90%. If it exceeds 90%, the fluid resistance becomes too small, and the flow rate of the electrolyzed raw water becomes extremely high, which affects the electrolysis efficiency.

  In addition, in the conventional apparatus, in order to increase the contact between the electrode and the raw water, a certain size of the electrode is required, and the electrolytic chamber is accordingly increased. However, by adopting a porous electrode, the contact between the electrode and the raw water can be greatly increased even if it is smaller than the electrode used in the conventional apparatus. Is possible.

  Furthermore, since the electrolyzed raw water that has flowed slowly has a long residence time in the electrode chamber, it can supply a sufficient amount of current, generating violent bubbles on the electrode surface, which impedes contact between the electrolyzed raw water and the electrode surface. The scale can be prevented from adhering to the cathode side. In addition, since the contact time between the raw electrolytic water and the electrode is long, a conventional concentration can be efficiently generated with a small amount of electricity. Thereby, the temperature rise of an electrode can be suppressed, deterioration of an ion permeable film can be prevented, and deterioration of the electrode surface can be prevented.

From the above, in the conventional electrolysis apparatus, the electrolytic ionic substance is present at a high concentration in the vicinity of the electrode, but is separated from the electrode and diluted by natural diffusion and forced diffusion. In addition, there is naturally a high current density in the vicinity of the electrode, and electrons are exchanged at a high density with the electrolytic ionic substance and the electrolytic raw water. However, at a position away from the electrode, the concentration of the electrolytic ionic substance is dilute and the electrolytic raw water is Since the electrode cannot be brought into contact with the electrode, an efficient electrolytic reaction cannot be performed.
However, in the case of a porous electrode, a high concentration of electrolytic ionic material is present in a high concentration throughout the electrode, and the electrolytic raw water is in contact with the electrode while passing through the electrode. Thus, electrons can be exchanged at a high density, and an electrolytic reaction can be efficiently caused.

  Further, in the conventional electrode chamber, the space between the electrode and the electrode chamber has a distance of about 3 to 5 mm, and the electrolyzed raw water is discharged without contacting the electrode. However, in the case of a porous electrode arranged so as to be filled almost without any gap in the electrode chamber, when the distance between the electrolytic raw water passing through the micropores and the electrode is a 0.3 mm diameter hole, Since the distance between the electrodes passes through the vicinity of the electrode having a maximum current density of 0.15 mm and a high current density, the exchange of electrons between the electrolytic ionic substance and the raw electrolytic water is efficiently performed.

  Therefore, by adopting a porous electrode, the electrolysis efficiency can be improved, so the pH and redox potential of the electrolyzed water obtained can be improved, and the discharge of unelectrolyzed electrolytic ionic substances can be prevented. can do. In addition, by supplying a saturated electrolyte aqueous solution to the electrolysis chamber, an electrolytic reaction can be caused with power saving, and damage to the electrode and the ion permeable membrane can be prevented. Furthermore, the apparatus main body can be reduced in size.

(Operation of electrolyzer)
Next, operation | movement of the manufacturing apparatus of electrolyzed water is demonstrated.
First, operation | movement of the 1st electrolysis apparatus 100 which produces | generates alkaline electrolyzed water is demonstrated.
In the first electrolysis apparatus 100, the saturated electrolyte aqueous solution is supplied from the supply tank 300 to the anode chamber 101 via the pump 301, and the electrolytic raw water is supplied to the cathode chamber 102. Then, a current is applied to the anode 104 and the cathode 105 by the control unit 10.

(Anode chamber)
In the anode chamber 101, chloride ions (Cl ⁻ ) contained in the supplied saturated electrolyte aqueous solution react on the surface of the anode 104 based on the reaction formula shown below.
2Cl ⁻ → Cl ₂ + 2e ⁻ (1)
Further, the generated chlorine gas (Cl ₂ ) reacts with water based on the following formula to generate hydrochloric acid and hypochlorous acid.
Cl ₂ + H ₂ O → HCl + HClO (2)
Hydrochloric acid (HCl) and hypochlorous acid (HClO) obtained by the equation (2) are recovered into the supply tank 300 through a recovery port 107 provided at the lower part of the anode chamber 101.

(Cathode room)
On the other hand, in the cathode chamber 102, the electrolytic ionic substance (Na ⁺ ) contained in the saturated electrolyte aqueous solution supplied to the anode chamber 101 passes through the cation permeable membrane 103 by electrophoresis and is supplied to the cathode chamber 102 in a high concentration state. Is done.
Na ⁺ + e ⁻ → Na (3)
2Na + 2H ₂ O → 2Na ⁺ + 2OH ⁻ + H ₂ (4)
As shown in Formula (4), with the generation of hydrogen gas (H ₂ ), a sodium hydroxide aqueous solution (NaOH) is generated as alkaline electrolyzed water and is recovered from the discharge port 109.

Next, operation | movement of the 2nd electrolysis apparatus 200 which produces | generates acidic electrolyzed water is demonstrated.
In the second electrolysis apparatus 200, the saturated electrolyte aqueous solution is supplied from the supply tank 300 to the cathode chamber 202 via the pump 302, and the raw electrolytic water is supplied to the anode chamber 201. Then, a current is applied to the anode 204 and the cathode 205 by the control unit 20.

(Cathode room)
In the cathode chamber 202, cations (Na ⁺ ) contained in the supplied saturated electrolyte aqueous solution react on the surface of the cathode 205 based on the reaction formula shown below.
Na ⁺ + e ⁻ → Na (5)
2Na + 2H ₂ O → 2Na ⁺ + 2OH ⁻ + H ₂ (6)
As shown in Formula (6), sodium hydroxide (NaOH) is generated along with the generation of hydrogen gas (H ₂ ), and is recovered from the recovery port 207 to the supply tank 300.

(Anode chamber)
In the anode chamber 201, anions (Cl ⁻ ) contained in the saturated electrolyte aqueous solution supplied to the cathode chamber 202 pass through the anion permeable membrane 203 by electrophoresis and are supplied to the anode chamber 201 in a high concentration state. Then, chloride ions (Cl ⁻ ) react on the surface of the anode 204 based on the reaction formula shown below.
2Cl ⁻ → Cl ₂ + 2e ⁻ (7)
Further, the generated chlorine gas (Cl ₂ ) reacts with water based on the following formula to generate hydrochloric acid and hypochlorous acid.
Cl ₂ + H ₂ O → HCl + HClO (8)
As shown in Expression (8), the generated hypochlorous acid (HClO) is discharged from the discharge port 209 as acidic electrolyzed water.

  From the above description, the electrolyzed water production apparatus according to the first embodiment can generate alkaline electrolyzed water and operate the second electrolyzer 200 when the first electrolyzer 100 is operated. When it is made, acidic electrolyzed water can be generated. Thereby, only the electrolysis water which needs acidity or alkalinity can be produced | generated, and the production | generation of unnecessary electrolysis water can be prevented.

In addition, since the movement resistance of raw water is high in the porous electrode, it is difficult to move the whole of the electrode when there is only one raw water supply port. Therefore, a plurality of raw water supply ports 108 and 208 are provided. The raw water can be moved to every corner in the electrode of the porous body. Accordingly, by providing a plurality of discharge ports 109 and 209, it is possible to smoothly discharge the electrolyzed water generated by passing through the porous body electrode.
Furthermore, by making the diameters of the discharge ports 109 and 209 larger than the diameters of the supply ports 108 and 208, the burden on the electrolyzer due to the supply pressure of raw water can be reduced.

<Second Embodiment>
With reference to FIG. 3, the electrolyzed water manufacturing apparatus according to the second embodiment will be described. In addition, since what attached | subjected the code | symbol same as the code | symbol shown in FIG. 1 has the same function, the overlapping description is abbreviate | omitted here.
As shown in the figure, the electrolyzed water production apparatus according to the second embodiment adjusts the amount of electrolyzed raw water supplied to the raw water supply ports 108 and 208 of the first electrolyzer 100 and the second electrolyzer 200, respectively. This is different from the electrolyzed water production apparatus according to the first embodiment in that water supply amount adjusting valves 110 and 210 are provided. In the electrolyzed water production apparatus according to the second embodiment, when the water supply amount is adjusted by the water supply amount adjusting valves 110 and 210, for example, in the first electrolysis device 100, the supply amount of the electrolyzed raw water is decreased. The alkaline electrolyzed water having a high pH can be generated. On the other hand, the second electrolyzer 200 can generate acidic electrolyzed water having a high pH by reducing the amount of raw water supplied. ing.

  The discharge ports 109 and 209 are respectively provided with discharge amount adjusting valves 111 and 211 for adjusting the discharge amount of the electrolyzed water, and further provided with a communication pipe 303 for connecting the discharge ports 109 and 209. . The communication pipe 303 is provided with a flow rate adjustment valve 304 that adjusts the flow rate in the communication pipe 303, and alkaline electrolyzed water and acidic electrolyzed water are adjusted by the discharge amount adjustment valves 111 and 211 and the flow rate adjustment valve 304. PH can be freely adjusted, and electrolyzed water in which hypochlorous acid is mixed with alkaline electrolyzed water that could not be realized with conventional electrolyzers can be generated, and the range necessary for the purpose of use It becomes possible to produce a mixture.

<Third Embodiment>
With reference to FIG. 4, the electrolyzed water manufacturing apparatus according to the third embodiment will be described. In addition, since what attached | subjected the code | symbol same as the code | symbol shown in FIG. 1 and FIG. 3 has the same function, the overlapping description is abbreviate | omitted here.
As shown in the drawing, the electrolyzed water producing apparatus according to the third embodiment is similar to the first electrolyzing apparatus 100 in that the second electrolyzing apparatus 200 is connected to the anode chamber 201 and the cathode by the cation permeable membranes 103 and 203a. It is separated from the chamber 202 and differs from the electrolyzed water production apparatus according to the first and second embodiments in that the saturated electrolyte aqueous solution is supplied from the supply tank 300 to the anode chamber 201. That is, in the electrolyzed water production apparatus according to the third embodiment, both the first electrolyzer 100 and the second electrolyzer 200 generate alkaline electrolyzed water.
According to this embodiment, a large amount of alkaline electrolyzed water can be generated in a short time by operating both electrolyzers 100 and 200. In addition, when it is desired to generate a small amount of alkaline electrolyzed water, only one electrolyzer can be operated.

<Fourth Embodiment>
With reference to FIG. 5, the electrolyzed water manufacturing apparatus according to the fourth embodiment will be described. In addition, since what attached | subjected the code | symbol same as the code | symbol shown in FIG.1, FIG.3 and FIG.4 has the same function, the overlapping description is abbreviate | omitted here.
As shown in the figure, in the electrolyzed water producing apparatus according to the fourth embodiment, the first electrolyzer 100 and the second electrolyzer 200 are connected to the anode chamber 101 and the cathode chamber 102 by anion permeable membranes 103a and 203, respectively. Is different from the apparatus for producing electrolyzed water according to the third embodiment in that a saturated electrolyte aqueous solution is supplied from the supply tank 300 to the cathode chamber 102. That is, in the electrolyzed water manufacturing apparatus according to the fourth embodiment, both the first electrolyzer 100 and the second electrolyzer 200 generate acidic electrolyzed water.
According to this embodiment, a large amount of acidic electrolyzed water can be generated in a short time by operating both electrolyzers 100 and 200. In addition, when a small amount of acidic electrolyzed water is generated, only one electrolyzer can be operated.

<Fifth Embodiment>
With reference to FIG. 6, the electrolyzed water manufacturing apparatus according to the fifth embodiment will be described. In addition, since what attached | subjected the code | symbol same as the code | symbol shown in FIG. 1, FIG. 3-FIG. 5 has the same function, the overlapping description is abbreviate | omitted here.
As shown in the drawing, the electrolyzed water producing apparatus according to the fifth embodiment is provided with a cation permeable membrane 203a in the first electrolyzing apparatus 100 and the second electrolyzing apparatus 200, and is saturated from the supply tank 300. The third embodiment is such that the aqueous electrolyte solution is supplied to the anode chambers 101 and 201, and both the first electrolyzer 100 and the second electrolyzer 200 can generate alkaline electrolyzed water. However, in the electrolyzed water producing apparatus according to the fifth embodiment, the first electrolyzing apparatus 100 and the second electrolyzing apparatus 200 are made different sizes, and the cathode chambers 102 and 202 are provided with respective sizes. Recovery chambers 112 and 212 for recovering hydrogen generated in the cathode chambers 102 and 202 are provided. The recovery chambers 112 and 212 are composed of gas-liquid separation units 113 and 213 and discharge units 114 and 214. The gas-liquid separators 113 and 213 separate and recover the hydrogen gas generated in the cathode chambers 102 and 202 from the water vapor, and the recovered hydrogen gas is discharged to the outside by the discharge units 114 and 214.
Thus, the recovered hydrogen gas can be used as fuel, and the generated alkaline electrolyzed water can be used as a mixture of emulsion fuel.

<Sixth Embodiment>
With reference to FIG. 7, the electrolyzed water manufacturing apparatus according to the sixth embodiment will be described. In addition, since what attached | subjected the code | symbol same as the code | symbol shown in FIG. 1, FIG. 3-FIG. 6 has the same function, the overlapping description is abbreviate | omitted here.
As shown in the figure, the electrolyzed water production apparatus according to the sixth embodiment changes the amount of electrolyzed water produced by making the first electrolyzer 100 and the second electrolyzer 200 different in size. It is something that can be done.
According to this embodiment, a small amount of acidic electrolyzed water is generated by the first electrolyzer 100, and a large amount of alkaline electrolyzed water is generated by the second electrolyzed water 200. Then, a small amount of acidic electrolyzed water generated by the first electrolyzer 100 is mixed with a large amount of alkaline electrolyzed water generated by the second electrolyzer 200 via the communication pipe 303, thereby hypochlorous acid. Alkaline electrolyzed water mixed with an acid can be generated.

<Seventh Embodiment>
With reference to FIG. 8, the electrolyzed water manufacturing apparatus according to the seventh embodiment will be described.
As shown in the drawing, the electrolyzed water producing apparatus according to the seventh embodiment is similar to the electrolyzed water producing apparatus according to the sixth embodiment in that the first electrolyzing apparatus 100, the second electrolyzing apparatus 200, The amount of electrolyzed water produced can be changed by making the sizes different.
According to this embodiment, it is possible to make a difference in the amount of electrolyzed water produced by the first electrolyzer 100 and the second electrolyzer 200, respectively. Thereby, the alkaline electrolyzed water produced | generated with the 1st electrolyzer 100 can be mixed with the acidic electrolyzed water produced | generated with the 2nd electrolyzer 200 through the communicating pipe 303. FIG. In this embodiment, a large amount of acidic electrolyzed water whose pH is mainly adjusted is generated, and the alkaline electrolyzed water is mixed with the acidic electrolyzed water to adjust the pH to a range of, for example, 5.0 to 6.0. It can be adjusted with.

  In the above-described embodiment, the supply tank 300 is connected to both the first electrolyzer 100 and the second electrolyzer 200, and has a structure capable of generating acidic or alkaline electrolyzed water. However, if it is not always necessary to produce both electrolyzed waters, it is possible to prepare one in which the supply tank 300 is connected to only one of the first electrolyzer 100 or the second electrolyzer 200.

10, 20 Control unit 100 First electrolysis apparatus 101, 201 Anode chamber 102, 202 Cathode chamber 103, 203a Cation permeable membrane 103a, 203 Anion permeable membrane 104, 204 Anode 105, 205 Cathode 106, 206 Supply port 107, 207 Recovery port 108, 208 Raw water supply port 109, 209 Discharge port 110, 210 Water supply amount adjustment valve 111, 211 Discharge amount adjustment valve 112, 212 Collection chamber 113, 213 Hydrogen gas storage unit 114, 214 Discharge unit 300 Supply tank 301, 302 Pump 303 Communication pipe 304 Flow rate adjusting valve 400 Bulkhead

Claims (17)

A first electrolysis device having a cation permeable membrane separating the anode chamber and the cathode chamber;
A second electrolysis device having an anion permeable membrane separating the anode chamber and the cathode chamber;
An apparatus for producing electrolyzed water comprising the first electrolyzer and a supply tank for supplying an aqueous electrolyte solution to the second electrolyzer as a single unit.   2. The first electrolysis apparatus and the second electrolysis apparatus have a plurality of communication holes for connecting either the anode chamber or the cathode chamber and the supply tank. The electrolyzed water manufacturing apparatus as described.   The first electrolysis apparatus and the second electrolysis apparatus have a control unit having independent power sources and capable of individually controlling the generation of electrolyzed water. The electrolyzed water manufacturing apparatus as described.   The first electrolysis device and the second electrolysis device each have a supply port for supplying raw electrolytic water and a discharge port for discharging the generated electrolyzed water. The apparatus for producing electrolyzed water according to any one of 3.   The apparatus for producing electrolyzed water according to claim 4, wherein the discharge port is provided with an adjustment valve for adjusting a discharge amount.   The apparatus for producing electrolyzed water according to any one of claims 1 to 5, wherein the first electrolyzer and the second electrolyzer are different in size of an apparatus body. The apparatus for producing electrolyzed water according to claim 4 , wherein the discharge ports of the first electrolyzer and the second electrolyzer are communicated with each other through a communication pipe.   8. The apparatus for producing electrolyzed water according to claim 7, wherein the communication pipe is provided with a flow rate adjusting valve for adjusting the flow rate of the electrolyzed water in the pipe.   A plurality of the first electrolysis device and the second electrolysis device are connected to the supply tank, and the first electrolysis device and the second electrolysis device communicate with each other as a pair. The apparatus for producing electrolyzed water according to any one of claims 1 to 8, wherein:   The first electrolyzer and the second electrolyzer can adjust the generation amount, concentration, pH, and oxidation-reduction potential of electrolyzed water by varying the power supply amount, respectively. The apparatus for producing electrolyzed water according to any one of 1 to 9. The upper part of the cathode chamber of the first electrolyzer and the second electrolyzer is provided with a recovery chamber for recovering hydrogen gas generated in the cathode chamber,
The recovery chamber has a gas-liquid separation unit for separating hydrogen gas from water vapor;
The apparatus for producing electrolyzed water according to any one of claims 1 to 9, further comprising a discharge part for discharging the separated hydrogen gas to the outside.   The said supply tank circulates and supplies the said electrolyte aqueous solution with respect to a said 1st electrolysis apparatus and a said 2nd electrolysis apparatus, The electrolyzed water manufacture in any one of Claim 1 to 11 characterized by the above-mentioned. apparatus. The electrodes of the first electrolysis device and the second electrolysis device are formed of a porous body, and are filled and stored in the anode chamber and the cathode chamber without any gaps,
13. The apparatus for producing electrolyzed water according to any one of claims 1 to 12, wherein an electrolysis reaction is performed by passing raw electrolytic water and an aqueous electrolyte solution through the porous body.   14. The apparatus for producing electrolyzed water according to claim 13, wherein the electrode composed of the porous body is a sintered body in which metallic titanium particles and fibers are solidified in a porous shape.   The electrode composed of the porous body has an average pore diameter in the range of 0.3 mm to 3 mm, a porosity of 20% or more, and a thickness of 1 mm or more. Or the apparatus for producing electrolyzed water according to 14; The electrodes provided in the anode chamber and the cathode chamber were a combination of the electrodes of the porous body or a combination of the electrode of the porous body and a plate-like electrode, and punched with the electrode of the porous body The apparatus for producing electrolyzed water according to any one of claims 13 to 15 , which is a combination with an electrode or an electrode subjected to half punching. The electrolyzed water production according to any one of claims 13 to 16, wherein the anode chamber and the cathode chamber have a volume capable of accommodating the porous electrode having a thick three-dimensional shape. apparatus.

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