JP6845975B1 - Electrolytic system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrolytic system which is easy to miniaturize and has excellent maintainability. An electrolytic system 100 of the present invention includes an electrolytic device 1, a tank 2, a first pipe 3, a second pipe 4, a pump 5, and a control device 6. The control device 6 controls the electrolyzer 1 for a predetermined time to electrolyze the liquid to be treated. The electrolytic device 1 is formed in a cylindrical shape, and has an outer cylinder in which the introduction port 24 and the discharge port 25 are separated from each other in the central axis direction and arranged on the side surfaces thereof, and an opening of one of the introduction port 24 and the discharge port 25. A plurality of first electrode plates of the first polarity arranged in the vicinity of the above, and a plurality of second electrode plates of the second polarity arranged in the vicinity of the other opening of the introduction port 24 and the discharge port 25, and a plurality of second electrode plates. It is provided with a plurality of insulating first electrode side spacers arranged between all of the first electrode plates. The first electrode side spacer includes a first spacer that closes substantially all the gaps between the first electrode plates and sandwiches and fixes the second polar electrode plates located between the first electrode plates. [Selection diagram] Fig. 1

Description

The present invention relates to an electrolytic system that electrolyzes a liquid to be treated, such as salt water, water, or a liquid for organic synthesis.

A system that electrolyzes (hereinafter referred to as "electrolysis") various liquids (liquids to be treated) such as salt water (including seawater), water, and solutions for organic synthesis is called an electrolytic system. The electrolytic device provided in the electrolysis system includes an electrolytic cell that electrolyzes the liquid to be treated, an introduction port that introduces the liquid to be treated into the electrolytic cell, and an discharge port that discharges the liquid to be treated after electrolysis from the electrolytic cell. The electrolyzers are a vertical electrolyzer (hereinafter referred to as "vertical electrolyzer") arranged vertically and a horizontal electrolyzer (hereinafter referred to as "vertical electrolyzer") laid horizontally (or tilted). It is roughly divided into "horizontal electrolyzer"). A plurality of electrode plates (bipolar type or monopolar type) for electrolyzing the liquid to be treated are housed in the electrolytic cell.
Conventionally, in an electrolysis system equipped with an electrolyzer such as a vertical electrolyzer or a horizontal electrolyzer, measures have been taken to prevent deposits such as scales from accumulating in the electrolytic cell of the electrolyzer.

For example, in the electrolysis system provided with the vertical electrolysis device of Patent Document 1, the accumulation of deposits such as scales is prevented by utilizing the gas lift effect. In the electrolysis system provided with the vertical electrolysis device of Patent Document 2, a rectifying plate is arranged in another tank connected to the electrolytic cell in which the electrode plate is housed, and the flow velocity near the wall surface of the electrolytic cell is increased. , Prevents the accumulation of the deposits. Further, in the electrolysis system provided with the horizontal electrolysis device of Patent Document 3, the electrolytic cell is installed in an inclined manner so that the liquid to be treated flowing inside the electrolytic cell becomes an ascending flow, whereby the deposits are deposited. Is being prevented.

Japanese Unexamined Patent Publication No. 50-79484 Jitsukaisho 61-432666 Jikkenhei No. 3-30265

However, like the electrolysis system provided with the vertical electrolyzer of Patent Document 1, the direction perpendicular to the length direction of the electrolytic cell (in the case of the vertical electrolyzer, the height direction), that is, on the side surface of the electrolytic cell. In an electrolytic cell provided with an introduction port and a discharge port, even when the gas lift effect is used, the flow velocity of the liquid to be treated becomes slow near the wall surface of the electrolytic cell facing the introduction port or the discharge port, so that the scale is near the wall surface. Etc. are likely to accumulate.
Therefore, it is conceivable to provide the rectifying plate of Patent Document 2 in the vertical electrolyzer of Patent Document 1. In this case, it is possible to improve the effect of preventing the deposition of the deposits, as in the electrolysis system provided with the horizontal electrolysis device of Patent Document 3. However, in Patent Document 2, since the rectifying plate is arranged in a tank different from the electrolytic cell in which the electrode plate is housed, the size of the electrolytic device is increased, and the size of the electrolytic system is increased.
In order to avoid the increase in size, it is conceivable to arrange a straightening vane inside the electrolytic cell. However, since a plurality of electrode plates are housed in the electrolytic cell as electrode modules arranged densely with each other, if the rectifying plates are arranged apart from the electrode modules, the electrolytic cell must be made larger than before. After all, the increase in size of the electrolytic system cannot be avoided.

The present invention has been devised in view of the above-mentioned problems, and an object of the present invention is to provide an electrolytic system that is easy to miniaturize and has excellent maintainability.

In the electrolytic system of the present invention, an electrolytic device, a tank in which a liquid to be processed is stored, a first pipe connecting the tank and an introduction port of the electrolytic device, a discharge port of the electrolytic device, and the tank are provided. It has a second pipe to be connected, a pump for pumping the liquid to be processed from the tank to the introduction port via the first pipe, and a control device for controlling the electrolyzer. The control device controls the electrolyzer for a predetermined time to electrolyze the liquid to be treated.
The electrolyzer is formed in a cylindrical shape, and the introduction port and the discharge port are separated from each other in the central axis direction and are arranged on the side surfaces thereof at equal intervals in the stacking direction orthogonal to the central axis direction. It is connected to a metal and plate-shaped first polar base, extends in the central axis direction inside the outer cylinder, and is arranged near one of the openings of the introduction port and the discharge port. The plurality of first electrode plates of the first polarity are connected to the metal and plate-shaped second polarity base at equal intervals in the stacking direction, and extend in the central axis direction inside the outer cylinder. Insulation arranged between the plurality of second electrode plates of the second polarity arranged in the vicinity of the other opening of the introduction port and the discharge port and all of the plurality of first electrode plates. It is provided with a plurality of polar first electrode side spacers.
The one opening is located on the radial outer side of the outer cylinder in a direction orthogonal to the central axis direction and the stacking direction from a gap in the stacking direction formed between the plurality of first electrode plates. The other opening is located on the radial outer side of the outer cylinder in a direction orthogonal to the central axis direction and the stacking direction from a gap in the stacking direction formed between the plurality of second electrode plates.
The plurality of first electrode-side spacers include an inclined surface inclined from the central axis direction, and from the one opening toward the central axis, or from the central axis toward the one opening. It induces the flow of the liquid to be treated. The first electrode side spacers are arranged at the ends of the two adjacent first electrode plates to substantially completely close the gap between the two first electrode plates at the ends, and the two second electrodes. It is provided with a first spacer that sandwiches and fixes a second polarity electrode plate located between the electrode plates.

In the electrolytic apparatus provided in the electrolytic system of the present invention, the spacer on the first electrode side has not only an insulating function but also a rectifying function of the liquid to be treated. Therefore, the electrolytic apparatus can be miniaturized, and the accumulation of deposits such as scale can be effectively suppressed to reduce the frequency of maintenance (excellent in maintainability).
Therefore, since the electrolysis system of the present invention includes the electrolysis device, according to the present invention, it is possible to provide an electrolysis system that is easy to miniaturize and has excellent maintainability.

It is a schematic diagram which shows the electrolysis system of an embodiment. It is a schematic diagram which shows the operation panel of the control device of FIG. It is a partial sectional view which shows an example (bipolar type) of the electrolytic apparatus provided in the electrolytic system of FIG. FIG. 3 is a cross-sectional view taken along the line AA of FIG. It is a perspective view which shows the part of the electrolytic apparatus of FIG. 3 disassembled. It is a schematic diagram for demonstrating the structure of the electrode module of the electrolytic apparatus of FIG. It is sectional drawing for demonstrating the spacer. (A) is an XZ plan view of the first spacer, (b) is a view of the first spacer arranged between two adjacent anode plates or cathode plates from the Z direction, and (c) and (d). ) Is a view of the first spacers provided at both ends of the plurality of laminated anode plates viewed from the Z direction. It is a figure which shows by disassembling the second spacer. It is a schematic diagram for demonstrating the structure of the electrode module of another example (monopolar type) of the electrolytic apparatus provided in the electrolytic system of FIG.

Hereinafter, the electrolytic system of the embodiment will be described with reference to FIGS. 1 to 10. The embodiments shown below are merely examples, and there is no intention of excluding various modifications and applications of techniques that are not specified.
Each configuration shown in the embodiment can be variously modified and implemented without departing from the purpose thereof. In addition, each of the above configurations can be selected as necessary or combined as appropriate, except for the essential constituent requirements of the present invention.

[1. Electrolysis system]
FIG. 1 is a schematic diagram for explaining the configuration of the electrolytic system 100 of the embodiment.
The electrolysis system 100 includes at least an electrolysis device 1, a tank 2, a first pipe 3, a second pipe 4, a pump 5, and a control device 6.
The entire configuration of the electrolytic system 100 shown in FIG. 1 will be described in detail below.
The electrolyzer 1 is a device that electrolyzes various liquids (liquids to be treated) such as salt water (including seawater), water, and solutions for organic synthesis, depending on the intended use. Therefore, the electrolysis system 100 including the electrolysis device 1 can be said to be a production system for products produced by electrolyzing these liquids to be treated.
Here, as an example, the electrolysis system 100 will be described as a sodium hypochlorite production system that electrolyzes salt water to produce sodium hypochlorite (sodium hypochlorite).

The specific configuration of the electrolytic device 1 will be described in detail later.
However, due to its structural features, the electrolytic device 1 can be downsized as compared with the conventional electrolytic device, and the frequency of maintenance can be reduced (excellent in maintainability), so that long-term operation is possible. Is. Therefore, the electrolysis system 100 provided with the electrolysis device 1 can also be miniaturized and can be operated for a long period of time.
Since the electrolysis system 100 can be miniaturized, the entire configuration of the electrolysis system 100 can be housed in, for example, a square (square or rectangular) frame 76 to form one unit. For example, if the electrolytic system 100 is unitized by a frame 76 having a width of 1000 mm, a length of 1500 mm, and a height of 1500 mm, it can be mounted on a loading platform of a small vehicle, for example, a light truck.
Therefore, the electrolysis system 100 that can be miniaturized and can be operated for a long period of time is useful as a sodium hypochlorite production system that is effective in sterilizing the new coronavirus that has become popular worldwide in recent years. Since the electrolysis system 100 can be miniaturized, for example, the electrolysis system 100 can be installed on the loading platform of a light truck and a sodium hypochlorite solution can be sprayed on a public road for sterilization of the new coronavirus. Further, since the electrolytic system 100 can be operated for a long period of time and maintenance does not need to be performed for a long period of time, for example, a contractor who performs maintenance of the electrolytic system 100 by locking down the city as a countermeasure against the new coronavirus Even if it becomes difficult to come and go, the electrolytic system 100 can be used with peace of mind.

Generally, commercially available sodium hypochlorite is inconvenient because it is diluted with water and used as a sterilizing solution. However, according to the electrolytic system 100, a sodium hypochlorite solution having a concentration (0.05%, 500 mg / L) recommended by the Ministry of Health, Labor and Welfare as a safe concentration and a medicinal concentration that has little effect on the human body is directly applied. Can be generated. That is, the sodium hypochlorite solution produced by the electrolysis system 100 does not need to be diluted with water, so that not only the new coronavirus but also other viruses and bacteria can be sterilized in a plant (for example, an incinerator). It is especially useful when spraying a large amount on a large space such as a platform (such as a virus) or a public road. The principle of producing sodium hypochlorite at the anode and cathode of the electrolytic device 1 is as follows.
Anode: 2Cl ⁻ → Cl ₂ ＋ 2e
Cathode: 2H ₂ O + 2e → 2OH ⁻ + H ₂
2Na ⁺ + 2OH ⁻ → 2NaOH
_{Chlorine (Cl 2} ) generated at the anode (the anode plate 12P described later, the anode portion 40P of the electrode plate 40) is sodium hydroxide (NaOH) generated at the cathode (the cathode plate 12N described later, the cathode portion 40N of the electrode plate 40). ) And in the electrolytic cell as follows to produce sodium hypochlorite (NaClO).
Cl ₂ + 2NaOH → NaClO + NaCl + H ₂ O

The tank 2 is a container for storing the liquid to be processed to be electrolyzed by the electrolyzer 1. The capacity of the tank 2 is set according to the application of the electrolytic system 100. For example, when the electrolysis system 100 is mounted on a vehicle and sodium hypochlorite is sprayed on the road surface to sterilize the road surface, it is desirable that the tank 2 has a capacity of several hundred liters. Here, the description will proceed assuming that the capacity of the tank 2 is, for example, 200 liters.

The first pipe 3 is a pipe that connects the tank 2 and the introduction port 24 of the electrolytic device 1. A first valve 71 is arranged in the first pipe 3.
The second pipe 4 is a pipe that connects the discharge port 25 of the electrolytic device 1 and the tank 2.
The third pipe 7 is a pipe in which one end is connected between the pump 5 and the first valve 71 in the first pipe 3 and the other end serves as the first discharge port 74. That is, the third pipe 7 is a pipe that branches from the first pipe 3. A second valve 72 is arranged in the third pipe 7.
The fourth pipe 8 is a separate pipe different from the first pipe 3, and is a pipe in which one end is connected below the tank 2 and the other end is the second discharge port 75. A third valve 73 is arranged in the fourth pipe 8.
The pump 5 pumps the liquid to be treated stored in the tank 2 into the first pipe 3.
Each of the first valve 71, the second valve 72, and the third valve 73 allows the liquid in the pipe in which each of the first valve 71, the second valve 72, and the third valve 73 is arranged to flow by opening the valve, and stops the flow of the liquid by closing the valve. It should be noted that these valves are not completely closed or completely opened, and the flow rate of the liquid can be adjusted by putting them in a so-called "half-open" state.
The start and stop of the pump 5 is controlled by the control device 6 described later.
The flow rate adjustment by opening, closing, or half-opening the first valve 71, the second valve 72, and the third valve 73 may be performed manually or may be controlled by the control device 6. In the following description of the control of the electrolytic system 100, as an example, the control device 6 will be described as performing flow rate adjustment by opening, closing, or half-opening the first valve 71.
Here, "opening" means fully opening the valve, and "closed" means fully closing the valve.

The control device 6 includes at least an operation panel 61 for inputting an operation of the electrolysis system 100 and a timer 62 for measuring the time for electrolyzing the liquid to be processed, and the power supply is supplied for a predetermined time set in the timer 62 by the operation panel 61. The electric power of the device 9 is supplied to the electrolytic device 1. The control device 6 receives electric power for its own operation from the power supply device 9.
The electrolysis system 100 is controlled, for example, as follows.
First, before the start of electrolysis, 200 liters of salt water to be treated is stored in the tank 2, and the first valve 71, the second valve 72, and the third valve 73 are closed.
Next, the current density and time for electrolyzing the liquid to be processed by the electrolyzer 1 are set on the operation panel 61 included in the control device 6. For example, 200 mg / L (0) of the 200 liter solution to be treated stored in the tank 2 is electrolyzed at a current density of 0.5 A / dm ² (ampere / square decimeter) for 12 hours (first treatment). .02%) sodium hypochlorite solution can be produced. ^{In addition, by the treatment (second treatment) in which electrolysis is performed for 12 hours at 1 A / dm 2} , which is a higher current density than the first treatment, the concentration recommended by the Ministry of Health, Labor and Welfare is 500 mg / L (0.05%). Sodium hypochlorite solution can be produced.
After that, when the electrolysis start button arranged on the operation panel 61 is pressed, the control device 6 operates the pump 5 and opens the first valve 71, and further, the power source is supplied with the current density set in the operation panel 61. A current is supplied from the device 9 to the electrolytic device 1. As a result, the liquid to be treated stored in the tank 2 enters the introduction port 24 of the electrolytic device 1 through the first pipe 3, is electrolyzed inside the electrolytic device 1, and is discharged from the discharge port 25 of the electrolytic device 1. , It is returned to the tank 2 through the second pipe 4. That is, the liquid to be treated circulates between the tank 2 and the electrolyzer 1.
After opening the first valve 71, the control device 6 uses a flow meter (not shown) to set the flow velocity of the liquid to be treated between the electrode plates of the electrolytic device 1 to a preset predetermined speed (for example, 0). The opening degree of the first valve 71 (the degree of the fully opened or half-opened state) or the power of the pump 5 is adjusted so as to be (1.5 m / s to 1.0 m / s).
Then, when the time set in the operation panel 61 is timed by the timer 62, the control device 6 stops the supply of the current from the power supply device 9 to the electrolytic device 1, and further closes the first valve 71. Stop the pump 5. That is, the electrolysis system 100 electrolyzes the liquid to be treated for the set time, that is, for a predetermined time, and automatically stops the electrolysis when the predetermined time elapses.

When the sodium hypochlorite solution stored in the tank 2 is discharged to the outside of the tank 2 after the electrolysis is stopped, the second valve 72 or the third valve 73 is used. At this time, the first valve 71 is closed.
When the second valve 72 is opened or half-opened and the sodium hypochlorite solution is discharged from the first discharge port 74 of the third pipe 7, the pump 5 may be operated. The solution can be pressurized and released vigorously. For example, when the third pipe 7 is a rubber hose and the second valve 72 is arranged in the vicinity of the first discharge port 74, the operator can adjust the opening degree of the second valve 72 by his / her own hand. The distance at which the sodium chlorite solution is sprayed can be changed.
When the third valve 73 is opened or half-opened and the sodium hypochlorite solution is discharged from the second discharge port 75 of the fourth pipe 8, the natural flow is caused by gravity. For example, when the fourth pipe 8 is a metal pipe and the third valve 73 is a faucet cock, the operator can easily adjust the opening degree of the third valve 73 by his / her own hand to easily remove a bucket, a PET bottle, or the like. A solution of sodium hypochlorite can be poured into the container.

The operation panel 61 included in the control device 6 may be a switch-type input device, a dial-type input device, or a touch panel-type input device that accepts a touch operation on an image imitating a switch displayed on a display. It may be. The operation panel 61 is generally a square shape (square shape or rectangular shape) with a door, and when the door is opened, detailed settings for controlling the electrolytic system 100 such as current density and a predetermined time are made inside the operation panel 61. The input device is stored.
Here, at least two operation buttons shown in FIG. 2 are arranged on the surface of the door so that an ordinary person without specialized knowledge can easily operate the electrolysis system 100.
One of the two buttons is the first button 64, which is the electrolysis start button that performs the above-mentioned first process, and the other is the second button 65, which is the electrolysis start button that performs the above-mentioned second process.
When these buttons are pressed, the electrolysis system 100 automatically electrolyzes the liquid to be treated at a predetermined current density and time, and automatically stops after the elapse of the predetermined time.
Therefore, the first process is automatically performed only by pressing the first button 64 arranged on the surface of the door of the operation panel 61, and the second process is automatically performed only by pressing the second button 65. When an ordinary person operates the electrolytic system 100, it is not necessary to open the door of the operation panel 61 and set the current density and the time in detail. Therefore, even the general public can easily operate the electrolysis system 100 to produce a sodium hypochlorite solution having a predetermined concentration by simply touching either the first button 64 or the second button 65 with one touch. ..
The first button 64 and the second button 65 are on the surface of the door of the operation panel 61 so that an ordinary person without specialized knowledge can electrolyze the liquid to be treated by a simple operation without having to worry about the operation. Only two of the above, or only three with the addition of an emergency stop button to stop the electrolytic system 100 in case of an emergency may be arranged. In this case as well, if the electrolysis system 100 wants to electrolyze the liquid to be treated under other conditions, the operator should open the door of the operation panel 61 and separately make detailed settings such as current density and time. Can be done.
Further, here, two electrolysis start buttons (first button 64 and second button 65) are arranged according to the concentration of the sodium hypochlorite solution produced by the electrolysis system 100, but different concentrations can be produced. As such, an electrolysis start button similar to these may be added. That is, in that case, two or more or more electrolysis start buttons are arranged. Of course, only one electrolysis start button (for example, only the second button 65) may be arranged.

By the way, the electrolyzer 1 receives DC power to electrolyze the liquid to be processed. Therefore, when the power supply device 9 supplies AC power, for example, when the power supply device 9 is an AC generator, the control device 6 includes a converter 63. Then, after the AC power of the power supply device 9 is converted into DC power by the converter 63, the control device 6 supplies the DC power to the electrolytic device 1.
On the other hand, when the power supply device 9 supplies DC power, for example, when the power supply device 9 is a secondary battery, the control device 6 does not need to include the converter 63.
In FIG. 1, the power supply device 9 is housed in the frame 76, but the power supply device 9 does not necessarily have to be housed in the frame 76. For example, the power supply device 9 may be an outlet (AC power supply) of a general household or a business establishment. In this case, the power supply device 9 is arranged outside the frame 76. That is, in this case, the power supply device 9 is not included in the electrolytic system 100 unitized by the frame 76.
Further, when the power supply device 9 is an outlet (AC power supply) of a general household or business establishment, it is desirable that the electrolysis system 100 electrolyzes the liquid to be treated at night. By electrolyzing the liquid to be treated with nighttime electric power, a sodium hypochlorite solution having a predetermined concentration can be produced at low cost. For example, the electrolytic device 1 is installed on the loading platform of a light truck, and the electrolytic system 100 is operated on the night before the scheduled spraying date of the sodium hypochlorite solution (sterilizing solution) having a concentration recommended by the Ministry of Health, Labor and Welfare to prepare the liquid to be treated. By electrolysis, not only can the sterilizing solution be produced at low cost, but also the sterilizing solution can be immediately sprayed on the platform of the incinerator, public roads, etc. during the day of the scheduled date.

[2. Electrolyzer]
Then, the structure of the electrolytic apparatus 1 included in the electrolytic system 100 will be described with reference to FIGS. 3 to 9. Here, as an example of the electrolyzer 1, a bipolar horizontal electrolyzer is shown. After that, the electrode module of the monopolar horizontal electrolyzer will be described with reference to FIG. 10 as another example of the electrolyzer 1.
In the electrolyzer 1 included in the electrolysis system 100, a cylindrical outer cylinder 23 is used for the electrolytic cell. An introduction port 24 for introducing the liquid to be treated into the outer cylinder 23 and a discharge port 25 for discharging the electrolyzed liquid to be treated from the inside of the outer cylinder 23 are arranged on the side surface of the outer cylinder 23. Specifically, the introduction port 24 and the discharge port 25 are arranged so as to be separated from each other in the direction of the central axis of the outer cylinder 23 (hereinafter, referred to as "central axis direction" or "length direction of the electrolytic cell"). , Is arranged in a direction substantially perpendicular to the central axis direction (that is, the side surface 23a of the outer cylinder).
The electrolyzer 1 may be of a vertical type in which the central axis of the outer cylinder 23 is substantially in the vertical direction, or may be a horizontal type in which the central axis of the outer cylinder 23 is substantially in the horizontal direction.
The term "substantially vertical direction" as used herein includes not only the vertical direction but also a direction inclined by 45 degrees or more from the horizontal direction. Further, the "substantially horizontal direction" includes not only the horizontal direction but also a direction inclined by less than 45 degrees from the horizontal direction. In both the vertical type and the horizontal type electrolytic cell, it is desirable that the liquid to be treated flowing inside the electrolytic cell is designed to be an upward flow.
Further, in FIGS. 3 to 10, for convenience of explanation, an orthogonal coordinate system based on the X-axis, the Y-axis, and the Z-axis will be appropriately described.
Here, in FIGS. 3 to 7, since the drawings are simplified as appropriate, there are minor differences such as the number of electrode plates (anode plate, cathode plate, bipolar electrode plate) being different in each of the drawings. However, all of them are diagrams for explaining the same electrolytic device.
Then, the configuration of the electrolytic apparatus 1 will be specifically described below.

As shown in FIGS. 3 and 4, the electrolyzer 1 is a bipolar horizontal electrolyzer arranged so that the central axis of the outer cylinder 23 of the electrolytic cell formed in a cylindrical shape coincides with the X axis. The X-axis may be arranged in the horizontal direction (direction perpendicular to the vertical direction), but it is arranged at a predetermined angle (for example, about 5 degrees) from the horizontal direction so that the discharge port 25 is above the introduction port 24. It is desirable to be done.
The side surface 23a of the outer cylinder 23 is provided with two openings separated from each other in the X-axis direction. The opening on the left side in the figure is a discharge port 25 for discharging the liquid to be treated from the outer cylinder 23 after electrolysis, and the opening on the right side in the figure is an introduction port for introducing the liquid to be treated into the outer cylinder 23. 24. The broken line arrow in FIG. 4 indicates the flow of the liquid to be treated.
Here, an example is shown in which the introduction port 24 and the discharge port 25 are arranged 180 degrees apart from each other in the circumferential direction of the outer cylinder 23. Specifically, the introduction port 24 opens in the minus (−) direction of the Z axis, and the discharge port 25 opens in the plus (+) direction of the Z axis. The Z axis is perpendicular to the central axis (X axis) of the outer cylinder 23.
The electrolytic cell includes an outer cylinder 23 and flanges 15N and 15P described later that seal both ends of the outer cylinder 23.

The electrolytic device 1 is made of metal to a plurality of anode plates 12P electrically connected to a metal anode current-carrying plate 11P via a metal first base 13P, and to a metal cathode current-carrying plate 11N. It has a plurality of cathode plates 12N electrically connected via a second base 13N.
Both the anode plate 12P and the cathode plate 12N are rectangular in the XZ plane, extend in the X-axis direction inside the outer cylinder 23, and are equidistant in the Y-axis direction orthogonal to both the X-axis and the Z-axis. Each is laminated (parallel). The anode plate 12P is arranged in the vicinity of one opening (here, the discharge port 25) of the introduction port 24 and the discharge port 25, and the cathode plate 12N is the other opening of the introduction port 24 and the discharge port 25. (Here, it is arranged in the vicinity of the introduction port 24).

In the electrolyzer 1, the anode energizing plate 11P bent and formed in an L shape, the first base 13P rectangular in the YZ plane to which the anodic energizing plate 11P is fixed, and the plurality of anode plates 12P fixed to the first base 13P. The anode energization block 10P is configured by the above.
Similarly, the cathode energizing plate 11N bent and formed in an L shape, the second base 13N rectangular in the YZ plane to which the cathode energizing plate 11N is fixed, and the plurality of cathode plates 12N fixed to the second base 13N are used. , Cathode energization block 10N is configured.
As will be described later, the first base 13P and the second base 13N are provided with welding bolts 53 for fixing each of the flanges 15N and 15P that seal both ends of the outer cylinder 23 in advance at the four corners. Has been done.
The anode energizing block 10P and the cathode energizing block 10N are attached to both ends of the outer cylinder 23, respectively. Here, of both ends of the outer cylinder 23, the anode energization block 10P is arranged at the end on the discharge port 25 side, and the cathode energization block 10N is arranged at the end on the introduction port 24 side.

As shown in FIGS. 3 to 5, an electrode module 26 and an electrode support frame 50 that supports the electrode module 26 are arranged inside the outer cylinder 23. As shown in FIG. 6, the electrode module 26 includes an anode plate 12P connected to the first base 13P and a cathode plate 12N connected to the second base 13N, and a plurality of rectangular electrode plates 40 are laminated. It is formed in the shape of a square column.
In FIG. 6, the anode energizing plate 11P and the cathode energizing plate 11N are omitted from the electrode module 26, and each configuration is simplified for easy understanding. The spacers 20 and 30 described later are shown in the Y-axis direction. The length of is expressed larger than it actually is. Further, as described above, FIGS. 3, 5, and 6 are simplified views, and there are minor differences such as a difference in the number of electrode plates in each figure, but all of them are the same electrolyzer 1. It is a figure for demonstrating. The number of electrode plates arranged in the electrode module 26 is set to several tens to several hundreds depending on the design.
In FIG. 6, in each electrode plate (12P, 12N, 40), the anodic portion is indicated by a light dot pattern, and the cathodic portion is indicated by a dark dot pattern.

Here, since the electrolyzer 1 is a bipolar electrolyzer, the electrode plate 40 is a bipolar electrode plate. That is, both the anodic anode portion 40P and the cathodic cathode portion 40N are formed on one electrode plate 40. On the other hand, when the electrolyzer 1 is a monopolar electrolyzer, a monopolar electrode plate in which only the anode property or the cathodic property appears on one electrode plate is used. In both the bipolar type and the monopolar type electrode plates, the anodic portion and the cathodic portion are alternately arranged to face each other in the stacking direction (Y-axis direction).
As shown in FIG. 3, when electrolyzing the liquid to be processed by the electrolyzer 1, the electrode module 26 is electrically connected to the control device 6 via the anode energizing plate 11P and the cathode energizing plate 11N. Specifically, the control device 6 applies a positive potential (positive potential) to the anode energizing plate 11P and a negative potential (minus potential) to the cathode energizing plate 11N, so that each electrode plate of the electrode module 26 is applied. A predetermined polarity of anodic or cathodic appears at (12P, 12N, 40). Specifically, the anode plate 12P is anodic, and the cathode plate 12N is cathodic. Further, half of the electrode plate 40 is an anodic anode portion 40P, and the other half is a cathodic cathode portion 40N.

As shown in FIG. 5, the electrode support frame 50 has a pair of first support frames 51 that sandwich the electrode module 26 in the stacking direction (Y-axis direction), and a direction perpendicular to both the X-axis and the stacking direction (that is, the stacking direction). , Z-axis direction), and has a pair of second support frames 52 that are fixed to the first support frame 51 by sandwiching the pair of first support frames 51.
The pair of first support frames 51 are fixed to each other with the anode plate 12P, the cathode plate 12N, and the electrode plate 40 sandwiched by a plurality of bolts 43 (broken lines in FIG. 6) extending in the stacking direction (Y-axis direction). Will be done. The pair of second support frames 52 abut on the end faces (XY planes) of the first support frame 51 and are fixed to the first support frame 51 by screws 44 (see FIG. 7). In this way, the electrode support frame 50 supports the electrode module 26 by pressing the square pillar-shaped electrode module 26 from all sides, and prevents the electrode module 26 from being deformed.

Each of the first support frames 51 is integrally formed with the rectangular first plate portion 51a corresponding to the length of the electrode module 26 in the X-axis direction and the first plate portion 51a, and is arranged at predetermined intervals in the X-axis direction. It is provided with a plurality of first flange portions 51b.
The second support frame 52 is integrally formed with the rectangular second plate portion 52a corresponding to the length of the electrode module 26 in the X-axis direction and the second plate portion 52a, and is arranged at predetermined intervals in the X-axis direction. A plurality of second flange portions 52b are provided.
In a state where the first support frame 51 and the second support frame 52 are fixed to each other, as shown in FIG. 4, the first flange portion 51b and the second flange portion 52b are combined, and the inner diameter of the outer cylinder 23 is approximately the same. A circular collar portion 50b having the same or slightly smaller outer diameter is formed.
By arranging the flange portion 50b of the electrode support frame 50 in substantially contact with the inner peripheral surface of the outer cylinder 23, it is possible to prevent the electrode module 26 from rattling inside the outer cylinder 23.
Further, since the flange portion 50b of the electrode support frame 50 substantially closes the gap between the inner peripheral surface of the outer cylinder 23 and the electrode support frame 50, the inside surrounded by the electrode support frame 50, that is, the electrode module 26 The liquid to be treated can be reliably introduced, and electrolysis can be performed effectively.

Here, as shown in FIG. 4 or 5, of the pair of second support frames 52, the upper second support frame 52 is provided with an opening 52c at a position corresponding to the discharge port 25, and is provided below. The second support frame 52 is provided with an opening 52d at a position corresponding to the introduction port 24. However, the openings 52c and 52d are formed only in one of the second support frames 52 of the pair of second support frames 52, depending on the positions of the introduction port 24 and the discharge port 25 arranged in the outer cylinder 23. In some cases. For example, when the introduction port 24 and the discharge port 25 are arranged at the same position when viewed in the circumferential direction of the outer cylinder 23, only one of the second support frames 52 of the pair of the second support frames 52 has the opening 52c and the opening 52c. The opening 52d is formed.

As shown in FIG. 5, the electrode module 26 including the anode energization block 10P and the cathode energization block 10N is fixed to the electrode support frame 50 and then inserted into the outer cylinder 23.
An annular gasket 16 having an inner diameter substantially the same as that of the outer cylinder 23 is arranged on one end surface of the outer cylinder 23. Further, a rectangular gasket 17 having substantially the same outer shape as the first base 13P, having a rectangular opening formed in the center and having through holes 18 formed in the vicinity of the four corners of the opening is arranged.
Further, a flange 15P having a rectangular opening 15a having substantially the same shape as the opening of the gasket 17 is arranged in the center. Through holes 15b are provided in the vicinity of the four corners of the opening 15a of the flange 15P.

The positions of the four through holes 18 formed in the gasket 17 and the positions of the four through holes 15b formed in the flange 15P correspond to the positions of the four welding bolts 53 provided in the first base 13P, respectively. ing.
Therefore, first, the four through holes 18 of the gasket 17 are inserted into each of the four welding bolts 53 of the first base 13P, and then the four through holes 15b of the flange 15P are inserted into each of the four welding bolts 53. Are inserted respectively. Then, a nut (not shown) is fitted into the welding bolt 53, and the first base 13P and the flange 15P are hermetically fixed by sandwiching the gasket 17.
Next, the flange 15P and the outer cylinder 23 sandwich the gasket 16 and are airtightly fixed by bolts and nuts (not shown).

At one end of the outer cylinder 23, an anode terminal box 14P covering the anode current-carrying plate 11P is fixed to the flange 15P in order to protect the anode current-carrying plate 11P.
The first base 13P and the second base 13N have the same shape, and the flange 15P and the flange 15N have the same shape. Therefore, similarly, on the other end surface of the outer cylinder 23, the second base 13N and the flange 15N, and the flange 15N and the outer cylinder 23 are hermetically fixed by sandwiching a gasket (corresponding to gaskets 16 and 17) (not shown). To. Further, in order to protect the cathode energizing plate 11N, the cathode terminal box 14N covering the cathode energizing plate 11N is fixed to the flange 15N.

[3. Electrolyzer spacer]
As shown in FIG. 6, the number of the plurality of anode plates 12P is an even number. Therefore, the electrolyzer 1 uses the anode-side first spacer 21 arranged between all of the two adjacent anode plates 12P among the plurality of anode plates 12P and the plurality of anode plates 12P as the anode-side spacers 20. Anode-side first spacers 21A and 21B are provided between the anode plates 12P located at both ends and the first plate portion 51a closest to the anode plates 12P, respectively. Further, the electrolytic device 1 is integrated as the anode side spacer 20 by sandwiching and fitting the through holes from both sides through the through holes formed inside the anode plate 12P (for example, the central portion). The anode side second spacer 22 is provided.
The anode-side first spacers 21, 21A, and 21B are arranged at the ends of the anode plate 12P on the first base 13P side, respectively, and are between the two anode plates 12P at this end, or the anode plates at this end. Substantially all the gaps in the Y-axis direction and the Z-axis direction between the 12P and the first plate portion 51a are closed.
Further, the anode-side second spacer 22 substantially has a gap in the Y-axis direction between the anode plate 12P to which the anode-side second spacer 22 is fixed and the two electrode plates 40 adjacent to the anode plate 12P. Close everything. However, as will be described later, since the dimension of the anode side second spacer 22 is smaller than the dimension of the anode plate 12P in the XZ plane, the anode plate 12P to which the anode side second spacer 22 is fixed and the two electrode plates 40 adjacent thereto When the gap between the two spacers is viewed from the X-axis direction, the gap where the second spacer 22 on the anode side is not provided (near both ends of the second spacer 22 on the anode side in the Z-axis direction) is not closed and is to be processed. The liquid can flow.

On the other hand, the number of the plurality of cathode plates 12N is an odd number. Therefore, the electrolytic device 1 is arranged as the cathode side spacer 30 at the end of the two adjacent cathode plates 12N on the second base 13N side, and Y between all of the two cathode plates 12N at this end. A penetration formed inside (for example, an anode portion) of a cathode-side first spacer 31 that closes substantially all the gaps in the axial direction and the Z-axis direction and an electrode plate 40 arranged between the two cathode plates 12N. A second spacer 32 on the cathode side is provided, which is integrated by sandwiching and fitting the through hole from both sides through the hole.
The cathode-side second spacer 32 closes substantially all the gap in the Y-axis direction between the electrode plate 40 to which the cathode-side second spacer 32 is fixed and the two cathode plates 12N adjacent to the electrode plate 40. .. However, as will be described later, since the size of the cathode side second spacer 32 is smaller than the size of the electrode plate 40 on the XZ plane, the electrode plate 40 to which the cathode side second spacer 32 is fixed and the two cathode plates 12N adjacent to the electrode plate 40 are fixed. When the gap between the two spacers is viewed from the X-axis direction, the gap where the second spacer 32 on the cathode side is not provided (near both ends of the second spacer 32 on the cathode side in the Z-axis direction) is not closed and is to be processed. The liquid can flow.

In addition to completely closing the gap between two adjacent electrode plates or between the electrode plate and the electrode support frame 50, the above-mentioned "closes substantially all the gaps" means that the gap is very small. It is a concept that also includes closing the space with the remaining space. Since "substantially all gaps are closed", any spacer can smoothly guide the liquid to be treated.
The anode-side spacer 20 may be arranged in contact with two adjacent anode plates 12P, and the cathode-side spacer 30 may be arranged in contact with two adjacent cathode plates 12N.
The anode-side spacer 20 and the cathode-side spacer 30 are made of a highly insulating material (for example, rubber or plastic resin).

The plurality of anode-side spacers 20 have an inclined surface inclined with respect to the central axis (X-axis) of the outer cylinder 23, and are directed from one opening (for example, the introduction port 24) toward the X-axis direction or. The flow of the liquid to be treated is guided from the X-axis direction toward one opening (for example, the discharge port 25). That is, the anode side spacer 20 has a function as a rectifying plate in addition to the original function of preventing two adjacent anode plates 12P from contacting each other and electrically short-circuiting.
When the "one opening" is the discharge port 25, the anode-side spacer 20 guides the flow of the liquid to be treated from the X-axis direction toward the discharge port 25 as shown by the broken line arrow in FIG. The discharge port 25 is located radially outward from the gap formed between the plurality of anode plates 12P. In FIG. 4, the discharge port 25 is located before the flow direction of the liquid to be treated is changed by approximately 90 degrees by the anode-side spacer 20.

The plurality of cathode side spacers 30 have an inclined surface inclined with respect to the central axis (X axis) of the outer cylinder 23, and are directed from the X axis direction toward the other opening (for example, the discharge port 25), or. The flow of the liquid to be treated is guided from the other opening (for example, the introduction port 24) in the X-axis direction. That is, the cathode side spacer 30 also has a function as a rectifying plate in addition to the original function of preventing two adjacent cathode plates 12N from contacting each other and electrically short-circuiting.
When the "other opening" is the introduction port 24, the cathode side spacer 30 guides the flow of the liquid to be treated from the introduction port 24 in the X-axis direction as shown by the broken line arrow in FIG. The introduction port 24 is located radially outward from the gap formed between the plurality of cathode plates 12N. In FIG. 4, the flow direction of the liquid to be treated introduced from the introduction port 24 is changed by approximately 90 degrees by the cathode side spacer 30.

In the electrolytic device 1, since the introduction port 24 and the discharge port 25 are provided so as to be offset by 180 degrees in the circumferential direction of the outer cylinder 23, the inclined surface of the cathode side spacer 30 and the inclined surface of the anode side spacer 20 are centered. It is tilted at an angle of about 45 degrees with respect to the axis (X axis).

Then, the shapes of the anode-side first spacers 21, 21A and 21B of the anode-side spacer 20 and the cathode-side first spacer 31 of the cathode-side spacer 30 will be described in detail. Although they are arranged differently from each other as shown in FIGS. 4 and 6, they all have the same shape as shown in the view of the XZ plane of FIG. 8A viewed from the Y-axis direction.
As shown in FIG. 8A, the anode-side first spacers 21, 21A, 21B and the cathode-side first spacer 31 are in the Z-axis direction of the anode plate 12P or the cathode plate 12N when viewed from the Y-axis direction. It includes a rectangular portion having a dimension equivalent to the length and a substantially right triangle portion protruding from one corner in the rectangular portion in the X-axis direction. The right-angled portion of the substantially right-angled triangular portion is connected to the corner of the rectangular portion, and the rectangular portion and the substantially right-angled triangular portion are integrally formed.
The inclined surface 231 corresponding to the hypotenuse of the substantially right triangle portion is one of the inclined surfaces of the anode side spacer 20 and the cathode side spacer 30. Although the inclined surface 231 is a linear inclined surface here, it may be an arc-shaped inclined surface recessed toward the rectangular portion in order to guide the flow of the liquid to be treated more smoothly.

As shown in FIG. 8A, a plurality of through holes separated in the Z-axis direction are formed in the rectangular portions of the anode-side first spacers 21, 21A, 21B, and the cathode-side first spacer 31 of the cathode-side spacer 30. 232 is formed. Here, as an example, two through holes 232 are formed in these spacers.
Through holes (not shown) are formed in the anode plate 12P and the cathode plate 12N at positions corresponding to the through holes 232 of these spacers. Then, these spacers are fixed to the pair of first plate portions 51a together with the corresponding electrode plates by the through bolts (not shown) having a diameter of several mm corresponding to the through holes 232.

As shown in FIG. 8B, a concave notch 233 penetrating in the Z-axis direction is provided at the center of the substantially right-angled triangular portion of the anode-side first spacer 21 and the cathode-side first spacer 31 in the Y-axis direction. It is formed. The notch 233 of the anode-side first spacer 21 is fixed by sandwiching the cathode portion 40N of the electrode plate 40 arranged between two adjacent anode plates 12P. Further, the notch 233 of the first spacer 31 on the cathode side is fixed by sandwiching the anode portion 40P of the electrode plate 40 arranged between two adjacent cathode plates 12N.

As shown in FIG. 8C, a stepped portion 234 recessed in the Y-axis direction is formed at the upper right end portion of the anode-side first spacer 21A in the XY plane. One of the electrode plates 40 located at both ends of the electrode module 26 in the stacking direction, for example, the cathode portion 40N of the electrode plate 40 located at the uppermost position in FIG. 6 is recessed in the stepped portion 234 of the anode-side first spacer 21A. Be placed. Then, the stepped portion 234 of the anode-side first spacer 21A and the first plate portion 51a sandwich and fix the cathode portion 40N of the electrode plate 40.
Further, as shown in FIG. 8D, a stepped portion 235 recessed in the Y-axis direction is formed at the lower right end portion of the anode-side first spacer 21B in the XY plane. One of the electrode plates 40 located at both ends of the electrode module 26 in the stacking direction, for example, the cathode portion 40N of the electrode plate 40 located at the lowermost position in FIG. 6 is recessed in the stepped portion 235 of the anode side first spacer 21B. Be placed. Then, the stepped portion 235 of the anode-side first spacer 21B and the first plate portion 51a sandwich and fix the cathode portion 40N of the electrode plate 40.

Next, the shapes of the anode-side second spacer 22 of the anode-side spacer 20 and the cathode-side second spacer 32 of the cathode-side spacer 30 will be described in detail. Although they are arranged differently from each other as shown in FIGS. 4 and 6, they all have the same shape as shown in their exploded views in FIG. The lengths of the second spacers 22 and 32 are shorter than the length of the anode plate 12P or the cathode plate 12N in the Z-axis direction, and it is desirable that the dimensions are about half of the length in the Z-axis direction.
The anode-side second spacer 22 is composed of a plate-shaped spacer piece 22A having convex portions 236 at both ends and a plate-shaped spacer piece 22B having concave portions 237 having a diameter of several mm at both ends. As shown in FIG. 9, the recess 237 of the spacer piece 22B protrudes from the plate-shaped portion of the spacer piece 22B. Specifically, the two convex portions 236 of the spacer piece 22A and the two concave portions 237 of the spacer piece 22B are fitted (rivet-fastened) to each other to become one, and become rectangular (or linear). Moreover, a plate-shaped second spacer 22 on the anode side is formed.
The cathode-side second spacer 32 is composed of a plate-shaped spacer piece 32A having convex portions 236 at both ends and a plate-shaped spacer piece 32B having concave portions 237 having a diameter of several mm at both ends. As shown in FIG. 9, the recess 237 of the spacer piece 32B protrudes from the plate-shaped portion of the spacer piece 32B. Specifically, the two convex portions 236 of the spacer piece 32A and the two concave portions 237 of the spacer piece 32B are fitted (rivet-fastened) to each other to become one, and become rectangular (or linear). Moreover, a plate-shaped second spacer 32 on the cathode side is formed.

The second spacer 22 on the anode side is a spacer piece from one surface of the anode plate 12P in two through holes (not shown, but a minute through hole equivalent to the recess 237) formed inside the anode plate 12P. The two concave portions 237 of the 22B are inserted through the anode plate 12P, and the two convex portions 236 of the spacer piece 22A are fitted into the corresponding concave portions 237 from the other surface of the anode plate 12P to be fixed to the anode plate 12P.
As shown in FIG. 7, the center of the anode-side second spacer 22 is the center of the outer cylinder 23 in the Z-axis direction, and the center is at a position equivalent to the center of the opening 52c in the X-axis direction. Be placed.
The white arrow in FIG. 7 shows an example of the flow of the liquid to be treated. When the liquid to be treated flows along the X-axis, an inclined surface inclined from the X-axis direction (central axis direction), that is, the anode side third. The inclined surface 231 of the spacer 21 and the inclined surface 238 of the second spacer 22 on the anode side effectively guide the flow of the liquid to be treated toward the discharge port 25. Although the inclined surface 238 has a linear shape here, it may have an arc shape recessed toward the discharge port 25 in order to guide the flow of the liquid to be treated more smoothly.
That is, the anode-side second spacer 22 divides the flow of the liquid to be treated to reduce the flow of the liquid to be treated that directly collides with the anode-side first spacer 21, and the anode-side first spacer 21 is rectified. In order to prevent the flow of the liquid to be treated from being obstructed, two spacers, the anode-side first spacer 21 and the anode-side second spacer 22, are arranged in the vicinity of the anode plate 12P, so that the anode-side first spacer 21 It is possible to more effectively suppress the accumulation of deposits such as scale in the vicinity of the anode plate 12P as compared with the case where only the anode plate is arranged.
Depending on the design, the anode-side spacer 20 may be configured such that the anode-side second spacer 22 is not arranged and only the anode-side first spacer 21 is arranged.

The second spacer 32 on the cathode side has two through holes formed inside the electrode plate 40 arranged between two adjacent cathode plates 12N (not shown, but a minute through hole equivalent to the recess 237). ), The two recesses 237 of the spacer piece 32B are inserted from one surface of the electrode plate 40, and the two convex portions 236 of the spacer piece 32A are fitted into the corresponding recesses 237 from the other surface of the electrode plate 40. By combining them, they are fixed to the electrode plate 40.
As shown in FIG. 4, the center of the second spacer 32 on the cathode side is the center of the outer cylinder 23 in the Z-axis direction, and the center is at a position equivalent to the center of the opening 52d in the X-axis direction. Be placed.
When the liquid to be treated is introduced from the introduction port 24, the inclined surface inclined from the X-axis direction (central axis direction), that is, the inclined surface 231 of the cathode side first spacer 31 and the inclined surface 238 of the cathode side second spacer 32. Therefore, the flow of the liquid to be treated is effectively guided in the X-axis direction. Although the inclined surface 238 has a linear shape here, it may have an arc shape recessed in the minus (-) X-axis direction in order to guide the flow of the liquid to be treated more smoothly. ..
That is, the cathode-side second spacer 32 divides the flow of the liquid to be treated to reduce the flow of the liquid to be treated that directly collides with the cathode-side first spacer 31, and the cathode-side first spacer 31 is rectified. In order to prevent the flow of the liquid to be treated from being obstructed, two spacers, the cathode side first spacer 31 and the cathode side second spacer 32, are arranged in the vicinity of the cathode plate 12N, so that the cathode side first spacer 31 It is possible to more effectively suppress the accumulation of deposits such as scale in the vicinity of the cathode plate 12N as compared with the case where only the cathode plate is arranged.
Depending on the design, the cathode side spacer 30 may be configured such that the cathode side second spacer 32 is not arranged and only the cathode side first spacer 31 is arranged.

As shown by the alternate long and short dash line in FIG. 6, the electrolytic device 1 has a plurality of spherical or rugby ball-shaped insulating spacers 33 elongated in the Y-axis direction so that the plurality of bipolar electrode plates 40 do not come into contact with each other. May be provided. It is desirable that the dimensions of the spacer 33 in the XZ plane are as small as possible compared to the dimensions of the electrode plate 40 in the XZ plane. As described above, in FIG. 6, the length of the spacer 33 in the Y-axis direction is expressed larger than the actual length for the convenience of showing a simplified diagram for easy understanding.
Similar to the anode side second spacer 22 and the cathode side second spacer 32, the spacer 33 is a hemispherical or semi-rugby ball-shaped spacer piece having protrusions at both ends, and recesses (anode side) having a diameter of several mm at both ends. It is composed of a hemispherical or hemi-rugby ball-shaped spacer piece having a second spacer 22 and a protruding second spacer 32 on the cathode side).
The spacer 33 is formed in two through holes (not shown, but minute through holes equivalent to the recess) formed inside the electrode plate 40 from one surface of the electrode plate 40 to two of the spacer pieces. It is fixed to the electrode plate 40 by inserting the two concave portions and fitting the two convex portions of the other spacer piece from the other surface of the electrode plate 40 into the corresponding concave portions.
The spacer 33 may have a hollow columnar shape that penetrates the bolt 43. In this case, the spacer 33 is sandwiched between the anode portion 40P of the electrode plate 40 and the cathode portion 40N facing the Y-axis direction, and is fastened and fixed with bolts 43.

FIG. 10 shows an electrode module 26'when the electrode module 26 of the electrolytic device 1 is of a monopolar type. FIG. 10 is a schematic diagram corresponding to FIG. The monopolar electrode module 26'shown in FIG. 10 is largely different in that the electrode plate 40 arranged in the bipolar electrode module 26 shown in FIG. 6 does not exist.
In FIG. 10, similarly to FIG. 6, the anode portion is shown by a light dot pattern, and the cathode portion is shown by a dark dot pattern.
Further, in FIG. 10, the same configurations as those in FIG. 6 are assigned the same numbers, and the description including the effects will be omitted.

In the monopolar electrode module 26', the anode plate 12P is arranged between two adjacent cathode plates 12N among the plurality of cathode plates 12N. Therefore, the notch 233 of the first spacer 31 on the cathode side is fixed by sandwiching the anode plate 12P.
Further, the notch 233 of the first spacer 21 on the anode side is fixed by sandwiching the cathode plate 12N.
Further, in the monopolar electrode module 26', since the electrode plate 40 of the bipolar electrode module 26 does not exist, the cathode side second spacer 32 is an anode plate 12P arranged between two adjacent cathode plates 12N. The two recesses 237 of the spacer piece 32B are inserted from one surface of the anode plate 12P into the two through holes (not shown, but minute through holes equivalent to the recess 237) formed inside the. The two convex portions 236 of the spacer piece 32A are fixed to the anode plate 12P by fitting the two convex portions 236 of the spacer piece 32A into the corresponding concave portions 237 from the other surface of the anode plate 12P. That is, the anode side second spacer 22 and the cathode side second spacer 32 are fixed to the anode plate 12P.

Further, similarly to the electrode module 26, the spacer 33 may be arranged in the electrode module 26'. However, the spacer 33 is fixed to the anode plate 12P. Specifically, in two through holes (not shown) formed inside the anode plate 12P (for example, the central portion), two recesses of one spacer piece of the spacer 33 from one surface of the anode plate 12P. Is inserted into the anode plate 12P, and the two convex portions of the other spacer piece of the spacer 33 are fitted into the corresponding concave portions from the other surface of the anode plate 12P to be fixed to the anode plate 12P.

As described above, in the electrolytic apparatus 1, the cathode side spacer 30 and the anode side spacer 20 are provided in the vicinity of the introduction port 24 and the discharge port 25, respectively. However, depending on the design, only one of the anode side spacer 20 and the cathode side spacer 30 may be arranged in only one of the introduction port 24 and the discharge port 25.
For example, in the electrolyzer 1, only the anode side spacer 20 may be arranged to rectify the flow of the liquid to be treated in the vicinity of the discharge port 25, or only the cathode side spacer 30 may be arranged in the vicinity of the introduction port 24. The flow of the liquid to be treated may be rectified.

Further, in the electrolytic device 1, the cathode energizing block 10N is provided near the introduction port 24 and the anodic energizing block 10P is provided near the discharge port 25, but the anodic energizing block 10P is provided near the introduction port 24 and exhausts. A cathode energizing block 10N may be provided in the vicinity of the outlet 25. Also in this case, the control device 6 applies a positive potential (positive potential) to the anode energizing plate 11P and a negative potential (minus potential) to the cathode energizing plate 11N. Then, in this case, the anode-side spacer 20 guides the flow of the liquid to be treated from one opening (introduction port 24) toward the central axis direction (X-axis direction), and the cathode-side spacer 30 is the central axis. The flow of the liquid to be treated is guided from the direction (X-axis direction) toward the other opening (discharge port 25).

Therefore, in the claims, the first polarity electrode plate means either an anodic anode plate or a cathodic cathode plate. Further, the second electrode plate having the second polarity means an electrode plate having the opposite polarity to the first electrode plate having the first polarity. Therefore, when the first electrode plate of the first polarity is an anodic anode plate, the second electrode plate of the second polarity is a cathodic cathode plate, and the first polar bases are the first base and the second. The polar base means the second base, and the first electrode side spacer and the second electrode side spacer mean the anode side spacer and the cathode side spacer, respectively. When the first electrode plate of the first polarity is a cathodic cathode plate, the second electrode plate of the second polarity is an anode plate, and the first polarity base is the second base, the second base. The bipolar base means the first base, and the first electrode side spacer and the second electrode side spacer mean the cathode side spacer and the anode side spacer, respectively.

1 Electrolyte 2 Tank 3 1st pipe 4 2nd pipe 5 Pump 6 Control device 7 3rd pipe 8 4th pipe 9 Power supply 10P Anode energization block 10N Anode energization block 11P Anode energization plate 11N Catabol energization plate 12P Anode plate 12N Anode Plate 13P 1st base 13N 2nd base 14P Anode terminal box 14N Anode terminal box 15a Opening 15b Through hole 15N, 15P Flange 16 Gasket 17 Gasket 18 Through hole 20 Anode side spacer 21, 21A, 21B Anode side first spacer 22 Anode side Second spacer 22A Spacer piece 22B Spacer piece 23 Outer cylinder 23a Side surface 24 Introduction port 25 Discharge port 26, 26'Electrode module 30 Anode side spacer 31 Anode side first spacer 32 Anode side second spacer 32A Spacer piece 32B Spacer piece 33 Spherical Spacer 40 Electrode plate 40P Anode part (anodic part)
40N Cathodic part (cathodic part)
43 Bolt 44 Screw (Screw)
50 Electrode support frame 50b Circular flange 51 First support frame 51a First plate 51b First collar 52 Second support frame 52a Second plate 52b Second collar 52c Opening 52d Opening 53 Welding bolt 61 Operation panel 62 Timer 63 Converter 64 1st button 65 2nd button 71 1st valve 72 2nd valve 73 3rd valve 74 1st discharge port 75 2nd discharge port 76 Frame 100 Electrolytic system 231 Inclined surface 232 Through hole 233 Notch 234 steps Shaped part 235 Stepped part 236 Convex part 237 Concave part 238 Inclined surface

Claims (5)

Electrolyzer and
The tank in which the liquid to be treated is stored and
The first pipe connecting the tank and the inlet of the electrolyzer,
A second pipe connecting the discharge port of the electrolyzer and the tank,
A pump that pumps the liquid to be treated from the tank to the introduction port via the first pipe.
It has a control device for controlling the electrolytic device, and has a control device.
The control device controls the electrolyzer for a predetermined time to electrolyze the liquid to be treated.
The electrolyzer
An outer cylinder formed in a cylindrical shape and having the introduction port and the discharge port separated from each other in the central axis direction and arranged on the side surfaces thereof.
Connected to a metal and plate-shaped first polar base at equal intervals in the stacking direction orthogonal to the central axis direction, extending in the central axis direction inside the outer cylinder, and the introduction port and the said. A plurality of first electrode plates of the first polarity arranged in the vicinity of one of the outlets,
It is connected to a metal and plate-shaped second polar base at equal intervals in the stacking direction, extends in the central axis direction inside the outer cylinder, and is the other of the introduction port and the discharge port. A plurality of second electrode plates of the second polarity arranged in the vicinity of the opening of the
It is provided with a plurality of insulating first electrode side spacers arranged between all of the plurality of first electrode plates.
The one opening is located on the radial outer side of the outer cylinder in a direction orthogonal to the central axis direction and the stacking direction from a gap in the stacking direction formed between the plurality of first electrode plates.
The other opening is located on the radial outer side of the outer cylinder in a direction orthogonal to the central axis direction and the stacking direction from a gap in the stacking direction formed between the plurality of second electrode plates.
The plurality of first electrode-side spacers include an inclined surface inclined from the central axis direction, and from the one opening toward the central axis, or from the central axis toward the one opening. It induces the flow of the liquid to be treated, and
The first electrode side spacer is arranged at the end portions of the two adjacent first electrode plates, substantially completely closes the gap between the two first electrode plates at the end portions, and the two first electrode plates are closed. An electrolytic system including a first spacer that sandwiches and fixes a second-polarity electrode plate located between one electrode plate. The control device can select between a first process of electrolyzing the liquid to be processed at a first current density and a second process of electrolyzing the liquid to be processed at a second current density higher than the first current density. The electrolysis system according to claim 1, further comprising a panel. It also has a square frame,
The electrolytic system according to claim 2, wherein the unit is housed in the frame. The liquid to be treated is salt water, the predetermined time is 12 hours, the first current density is 0.5 A / dm ² , and the second current density is 1 A / dm ² .
The electrolysis system according to claim 3, wherein sodium hypochlorite is produced by the electrolysis. The first electrode side spacer is integrated by sandwiching and fitting the through hole from both sides via a through hole formed in the first electrode plate or the second polar electrode plate, and is integrated. The electrolytic system according to any one of claims 1 to 4, further comprising a second spacer for dividing the flow of the treatment liquid.

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