JPH11158677A - Vertical type electrolytic cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertical type electrolytic cell which is small and compact and a device of small floor space and may be increased in its capacity as an electrolytic device for sea water, etc., having the vertical type electrolytic cell. SOLUTION: The vertical type electrolytic cell is constituted by housing electrode supporting boxes 2 for supporting electrodes 4 within outside cylinders 1 which are formed to a cylindrical shape and in which an electrolyte, such as sea water, passes. The electrolytic cell described above is provided with supporting box housing chambers 5 by dividing the inside of the outside cylinders to a plurality and the electrode supporting boxes are housed in the respective supporting box housing chambers 5. The respective supporting box housing chambers are piped and connected in such a manner that the electrolyte flows in series to the electrode supporting boxes in the supporting box housing chambers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bipolar electrode type vertical electrolytic cell for electrolyzing seawater.

[0002]

2. Description of the Related Art Conventionally, in thermal and nuclear power plants, seawater desalination plants, chemical plants, and the like, which use a large amount of seawater, parts that come into contact with seawater such as intakes, pipes, condensers, and various coolers. Adhered propagation of algae and shellfish has become a major problem. In order to solve such a problem, a device has been developed in which natural seawater is directly electrolyzed to generate sodium hypochlorite and injected into a water intake, thereby effectively suppressing the attachment of marine organisms. The above-described apparatus incorporates the above-described vertical electrode-type vertical electrolytic cell.

FIGS. 4 and 5 show an example of a two-electrode vertical electrolytic cell for electrolyzing seawater. FIG. 4 is a vertical sectional view of the electrolytic cell, and FIG. It is a C line sectional view. FIG.
5 to 100, reference numeral 100 denotes an electrolytic cell.
Reference numeral 0 denotes a cylindrical body having a cylindrical outer cylinder 1 and an upper lid 1a and a lower lid 1b having upper and lower surfaces closed, respectively, and having a predetermined pressure resistance. The lower lid 1b is provided with an inlet nozzle 21 for flowing seawater, and the upper lid 1a is provided with an outlet nozzle 22 for discharging the seawater. These nozzles 21,
Seawater to be subjected to electrolysis flows into the electrolytic cell 100 via 22.

In the electrolytic cell 100, there is provided an electrode support box 2 having a rectangular tube structure made of an electric insulator such as plastic. As shown in FIG. 5, the electrode support box 2 is configured such that first and second support frames 2a and 2b are framed in a square shape. Inside the electrode support box 2, a plurality of bipolar electrodes 4 are arranged and fixed in parallel and in multiple stages with a predetermined gap D therebetween. Specifically, the plurality of bipolar electrodes 4 are superposed in parallel via a spacer 23 having a thickness D, and are supported in a skewered manner by insulating bolts 24 and fixed between the support frames 2.

FIG. 6 shows a conventional example of a seawater electrolysis apparatus in which a plurality of such vertical electrolytic cells 100 are connected in series. In FIG. 6, reference numeral 1 denotes an outer cylinder, in which a plurality of bipolar electrodes 4 supported by an electrode support box 2 are accommodated in the outer cylinder 1 as shown in FIGS.

[0006] A plurality (four in this example) of the electrolytic cells 100 having such a configuration are erected, and the outer cylinder 1 of each electrolytic cell 100 is provided.
The seawater inlet nozzle 21 and the outlet nozzle 22 are connected by connecting pipes 13, 14, 15, and the seawater enters from the first electrolytic cell 100a (the left end in FIG. 6) and the second,
The fourth electrolytic cell 1 passes through the third electrolytic cells 100b and 100c.
The seawater flow path between the electrolytic cells 100 is connected in series (series) so as to be discharged from the outlet nozzle 22 of 00d.

In the electrolyzer shown in FIG. 6, seawater enters the electrolytic cell 100 from the inlet nozzle 21 of the first electrolytic cell 100a at the left end, and is electrolyzed by a current flowing between the two electrodes 4. The seawater is supplied to the first electrolytic cell 100
a to the second and third electrolytic cells 100b and 100c and the fourth
Flow through the electrolytic cell 100d in series, electrolysis is performed in the above-described manner in the process, and the electrolytic solution is discharged to the outside from the outlet nozzle 22 of the fourth electrolytic cell 100d.

[0008]

SUMMARY OF THE INVENTION A plurality of vertical electrolytic cells 10
As shown in FIG. 6, an electrode supporting box 2 for supporting a bipolar electrode 4 in an outer cylinder 1
The required number of the electrolytic cells 100 accommodating each other are arranged in parallel, and the respective electrolytic cells 100 are connected by connection pipes 13, 14, 15 so that seawater flows in a series (series).

However, in such an electrolytic cell 100,
Since the amount of seawater for electrolysis that can flow in one electrode support box 2 is determined, if the capacity of the electrolyzer is to be increased without increasing the amount of seawater to be electrolyzed, FIG.
As shown in (2), a plurality of electrolytic cells 100 are arranged in parallel.

[0010] For this reason, in the prior art, when the capacity is increased, there is a problem that the device is enlarged and the installation space is increased.

SUMMARY OF THE INVENTION In view of the above-mentioned problems in the prior art, the present invention relates to a vertical electrolytic cell capable of increasing the capacity by using a small, compact and small installation space in an electrolyzer for seawater or the like having a vertical electrolytic cell. The purpose is to provide.

[0012]

According to the present invention, an electrode support box for supporting electrodes is housed in an outer cylinder formed into a cylindrical shape and through which an electrolyte such as seawater flows. In the vertical electrolytic cell, the inside of the outer cylinder is divided into a plurality of parts to provide support box storage chambers, and the electrode support boxes are stored in each of the support box storage chambers. A vertical electrolytic cell is proposed, wherein pipes are connected between the support box storage chambers so that the electrolytic liquid flows through the electrode support box in series.

In the invention, preferably,
The support box storage chamber of the outer cylinder is formed by dividing into a plurality of, for example, four equal parts radially from the center of the outer cylinder.

According to this invention, the inside of the single outer cylinder is partitioned into a plurality of support box storage chambers, and the electrode support boxes for supporting the electrodes are stored in the respective storage chambers, and seawater is supplied to the plurality of electrodes and the electrode support chambers. By connecting the pipes so that the boxes flow in series (direct current), the same function as that of a device in which a plurality of outer cylinders are juxtaposed as in the prior art can be performed, and a plurality of partitions in which a single outer cylinder is partitioned as described above. This can be achieved by an extremely small and compact device that houses an electrode support box in a room. As a result, the electrolytic capacity can be increased without increasing the installation space, and the number of components is reduced and the cost is reduced as compared with the related art.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention unless otherwise specified, and are merely illustrative examples. Only.

FIG. 1 is a schematic vertical sectional view of a vertical electrolytic cell for electrolyzing seawater according to an embodiment of the present invention, and FIG.
FIG. 3 is a sectional view taken along line B of FIG. 1.

FIGS. 4 and 5 show the internal structure of a vertical electrolytic cell to which the present invention is applied. 4 and 5,
Reference numeral 100 denotes an electrolytic cell. The electrolytic cell 100 includes a cylindrical outer cylinder 1 made of a pressure-resistant container and an upper lid 1a and a lower lid 1b each of which closes upper and lower surfaces thereof, and has a predetermined pressure-resistant strength. Having a cylindrical body. The outer cylinder 1
Nozzle 21 through which seawater flows into lower lid 1b
The upper lid 1a is provided with an outlet nozzle 22 for discharging the seawater. Seawater to be subjected to electrolysis flows into the electrolytic cell 100 through these nozzles 21 and 22.
Since 15,000 to 20,000 ppm of chloride ions are present in seawater, electrolysis of the seawater produces chlorine ions at the anode and sodium hydroxide at the cathode, and these two substances react to produce marine ions. A sodium hypochlorite having an excellent inhibitory effect on product adhesion is produced.

In the electrolytic cell 100, there is provided an electrode support box 2 having a rectangular tube structure made of an electric insulator such as plastic. As shown in FIG. 5, the electrode support box 2 is configured such that first and second support frames 2a and 2b are framed in a square shape. Inside the electrode support box 2, a plurality of bipolar electrodes 4 are arranged and fixed in parallel and in multiple stages with a predetermined gap D therebetween. Specifically, the plurality of bipolar electrodes 4 are superposed in parallel via a spacer 23 having a thickness D, and are supported in a skewered manner by insulating bolts 24 and fixed between the support frames 2. The above internal configuration is the same as in the prior art.

1 to 3, reference numeral 1 denotes an outer cylinder. As shown in FIG. 2, the inside of the outer cylinder 1 is divided into four chambers by a partition 6 extending in a longitudinal direction, that is, a support box storage chamber 5 ( 5
a, 5b, 5c, 5d). The support box storage chamber 5 is radially divided into four equal parts by a partition wall 6 in the outer cylinder 1. Note that the support box storage chamber 5 does not need to be “radially divided equally” as described above, and a plurality of partitions may be formed in any form.

In each of the support box storage chambers 5, an electrode 4 having an internal structure as shown in FIGS. 4 and 5, and an electrode support box 2 for supporting the electrode 4 are stored. On the other hand, at the upper and lower parts of each support box storage chamber 5 in the outer cylinder 1, an entrance flange 3 is provided.
An entrance / exit duct 7 is provided so that seawater enters and exits the support box storage chambers 5 through the entrance / exit ducts 7.

The flow path of seawater passing through each of the four support box storage chambers 5 is configured as follows. That is, FIG.
At first, the seawater inlet pipe 8a is first connected to the entrance / exit flange 3 below the first support box storage chamber 5a of the four support box storage chambers 5.

The upper and lower entrance flange 3 of the first support box storage chamber 5a is connected to the lower entrance flange 3 of the second support box storage chamber 5b by a connecting pipe 4a. The upper entrance / exit flange 3 is connected to the lower entrance / exit flange 3 of the third support box storage chamber 5c by a connection pipe 9b. 4 is connected to the lower entrance flange 3 of the support box storage chamber 5d.

The upper and lower entrance flanges 3 of the fourth support box storage chamber 5d are connected to the seawater exit pipe 8b. By connecting such pipes, the first, second,
A series (series) seawater flow path that flows through the third and fourth support box storage chambers 5a, 5b, 5c, and 5d and reaches the seawater outlet pipe 8b is formed.

During operation of the vertical electrolytic cell 100, seawater flows from the seawater inlet pipe 8a to the lower entrance / exit of the first support box storage chamber 5a of the four support box storage chambers 5 in the outer cylinder 1. The storage chamber 5a passes through the flange 3 and the entrance / exit duct 7.
It flows inside from below to above. The seawater is electrolyzed in the first support box storage chamber 5a by a current flowing between the bipolar electrodes 4 supported by the electrode support box 2, and then flows out of the upper entrance / exit flange 3 to flow through the connection pipe 9a. Then, it flows into the second support box storage chamber 5b from the lower entrance flange 3.

The seawater is supplied to the second support box storage chamber 5b.
It flows through the inside from the lower side to the upper side to perform the same electrolysis as described above, flows out from the upper entrance / exit flange 3, enters the third support box storage room 5c, and flows from the lower side to the upper side in the storage room 5c. It is electrolyzed, enters the storage room 5d from the lower entrance / exit flange 3 of the fourth support box storage room 5d via the connection pipe 9c, flows upward from below, and is electrolyzed, and then, from the upper entrance / exit flange 3 It flows out to the seawater outlet pipe 8b.

Accordingly, the seawater flows through the four support box storage chambers 5a, 5b, 5c, and 5d from the seawater inlet pipe 8a in a series (direct current), and is electrolyzed in each support box storage chamber. The device is extremely small, compact and has a small installation space, which is discharged from the pipe 8b to the outside and forms four support box storage chambers 5 in a single outer cylinder 1. The prior art shown in FIG. Can exhibit an electrolysis function similar to that of the above.

[0027]

As described above, according to the present invention, a single outer cylinder is partitioned into a plurality of support box storage chambers, the electrode support boxes are stored in each storage chamber, and seawater is passed through each storage chamber. The same function as an electrolytic cell having a plurality of outer cylinders arranged in parallel as in the prior art is used, and a plurality of electrode support boxes are housed in a single outer cylinder as described above. This can be achieved with a compact device.

As a result, the electrolytic capacity can be increased without increasing the installation space, and the number of components can be reduced and a low-cost vertical electrolytic cell can be obtained as compared with the prior art.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a main part of a vertical electrolytic cell according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a view taken in the direction of arrow B in FIG. 1;

FIG. 4 is a longitudinal sectional view showing the internal structure of a vertical electrolytic cell.

FIG. 5 is a sectional view taken along line CC of FIG. 4;

FIG. 6 is a side view of a vertical electrolytic cell having a plurality of outer cylinders according to the related art.

[Explanation of symbols]

 Reference Signs List 1 outer cylinder 2 electrode support box 3 entrance / exit flange 4 electrode (two-electrode) 5 (5a, 5b, 5c, 5d) support box storage room 6 partition 7 entrance / exit duct 8a seawater inlet pipe 8b seawater outlet pipe 9a, 9b, 9c connection tube

Claims (2)

[Claims] 1. A vertical electrolytic cell having an electrode support box for supporting an electrode in an outer cylinder formed in a cylindrical shape and through which an electrolytic solution such as seawater flows, wherein: Is divided into a plurality to provide a support box storage room,
The electrode support boxes were stored in the respective support box storage chambers, and the respective support box storage chambers were connected by piping so that the electrolyte passed through the electrode support boxes in the respective support box storage chambers in series. A vertical electrolytic cell characterized in that: 2. The vertical electrolytic cell according to claim 1, wherein the support box storage chamber of the outer cylinder is formed by being divided radially from the center of the outer cylinder.