JP2010222594A - Vertical electrolytic device and electrode plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertical electrolytic device in which the film thickness of an anode surface can be easily measured in periodical inspection without taking out the whole electrolytic cell from the device, and to provide an electrode plate used in the device. <P>SOLUTION: In a plurality of electrode plates fixed in the vertical electrolytic device 10, at least one electrode plate 20 for inspection is placed at a position accessible through an inspection port 50. The anode portion 21 of the electrode plate for inspection includes an anode body 24 and a sampling portion 27 detachably attached to the anode body 24. Either the anode body 24 or the sampling portion 27 has a slit formed at a rim portion where attaching and detaching is performed; and the other of the anode body or the sampling portion has an insertion portion to be fitted into the slit, formed at the rim portion where attaching and detaching is performed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vertical electrolytic apparatus for electrolyzing water containing chloride ions such as seawater and an electrode plate used therefor.

  Algae and shellfish adhere to seawater inlets, pipes, condensers, various coolers, and other parts that contact seawater in thermal power plants, nuclear power plants, seawater desalination plants, chemical plants, etc. that use a large amount of seawater There is a problem of breeding. In order to solve this problem, a device was developed that effectively suppresses the attachment of marine organisms by electrolyzing natural seawater as it is to produce sodium hypochlorite and injecting it into the intake. ing. For example, Patent Document 1 describes a bipolar electrode type vertical electrolyzer as such a device.

Japanese Patent Laid-Open No. 11-158777

  As an electrode used for such electrolysis for producing sodium hypochlorite, for example, titanium is used for the cathode, and for example, titanium coated with a metal such as platinum is used for the anode. If electrolysis is performed over a long period of time, the coating layer on the titanium surface will be consumed and the film thickness will become thin, and the chlorine generation efficiency may be reduced. Need to do.

  However, while the vertical electrolyzer has the advantage that the installation space can be reduced, in order to measure the film thickness of the anode surface during periodic inspection, the top lid of the vertical electrolyzer is opened, There is a problem that a large-scale work of taking out the entire electrode cell having a length of several meters is required.

  Therefore, in view of the above problems, the present invention provides a vertical electrolytic device capable of easily measuring the film thickness of the anode surface by periodic inspection without taking out the entire electrode cell from the vertical electrolytic device, and an electrode plate used therefor The purpose is to provide.

  In order to achieve the above object, according to one aspect of the present invention, there is provided a vertical electrolysis apparatus, wherein an outer cylinder in which chloride ion-containing water circulates in the vertical direction is fixed inside the outer cylinder. A plurality of electrode plates and an inspection port accessible to at least one electrode plate among the plurality of electrode plates, the anode part of the at least one electrode plate being an anode part main body The anode part main body is provided with a detachable sample part, and one of the anode part main body or the sample part has a slit formed at an edge part to be attached and detached, and the anode part main body or the On the other side of the sample portion, an insertion portion that fits into the slit is formed at an edge portion to be attached and detached.

  In another aspect, the present invention provides an electrode plate for electrolyzing chloride ion-containing water, wherein the anode part of the electrode plate is an anode part body and a sample that can be attached to and detached from the anode part body. A part of the anode part main body or the sample part is formed with a slit at an edge part to be attached / detached, and the other part of the anode part main body or the sample part is attachable / detachable. In the edge portion to be performed, an insertion portion that fits into the slit is formed.

  In another aspect, the vertical electrolysis apparatus according to the present invention includes an outer cylinder in which chloride ion-containing water circulates in the vertical direction, a plurality of electrode plates fixed in the outer cylinder, and the plurality of the plurality of electrode plates. Among the electrode plates, a pair of spacers are provided above and below the at least one electrode plate and detachably sandwich the at least one electrode plate.

  The vertical electrolyzer according to the present invention includes, as yet another aspect, an outer cylinder in which chloride ion-containing water circulates in the vertical direction, a plurality of electrode plates fixed in the outer cylinder, and the plurality An inspection port accessible to at least one of the electrode plates, and a pair of spacers positioned above and below the at least one electrode plate so as to detachably sandwich the at least one electrode plate The at least one electrode plate includes a fixed electrode plate main body, and a sample portion that is detachably attached to the spacer via the electrode plate main body and an insulator.

  The vertical electrolyzer according to the present invention includes, as yet another aspect, an outer cylinder in which chloride ion-containing water circulates in the vertical direction therein, and a plurality of pieces fixed to the electrode support frame in the outer cylinder. Among the plurality of electrode plates, the electrode plate directly fixed to the surface of the electrode support frame has a positioning hole at a position asymmetric with respect to the central axis of the electrode plate. A positioning projection that fits into the positioning hole is formed on the surface of the electrode support frame.

  As described above, according to the present invention, since the sample portion or one electrode plate which is a part of the electrode plate can be easily removed, the film thickness of the anode surface can be measured without taking out the entire electrode cell from the vertical electrolyzer. It is possible to provide a vertical electrolytic device that can be used and an electrode plate used therefor.

1 is a cross-sectional front view showing an embodiment of a vertical electrolysis device according to the present invention. It is a cross-sectional top view along the II-II line of the vertical electrolyzer of FIG. FIG. 2 is a cross-sectional side view showing only an inspection electrode plate among a large number of arranged electrode plates in the vertical electrolysis device of FIG. 1. FIG. 4 is a cross-sectional front view of the vertical electrolysis device of FIG. 3. It is a side view which shows the anode main-body part of the electrode plate for an inspection of FIG. FIG. 6 is a cross-sectional plan view taken along line VI-VI of the anode main body portion of FIG. 5. It is a side view which shows the sample part of the electrode plate for inspection of FIG. FIG. 8 is a cross-sectional plan view taken along line VIII-VIII of the sample portion in FIG. 7. It is a cross-sectional front view which shows another embodiment of the electrode plate for inspection which concerns on this invention. FIG. 4 is an enlarged cross-sectional side view showing the vicinity of an inspection electrode plate in the vertical electrolysis device of FIG. 3. It is a schematic diagram which shows another embodiment of the vertical electrolyzer based on this invention. FIG. 12 is an enlarged side view showing the vicinity of an inspection electrode plate in the vertical electrolysis device of FIG. 11. It is a perspective view which shows the sheath-type spacer used for the vertical electrolyzer of FIG. It is further another embodiment of the vertical electrolyzer according to the present invention, and is a cross-sectional side view showing only an inspection electrode plate among a large number of arranged electrode plates. It is a cross-sectional front view of the vertical electrolyzer of FIG. It is a side view which shows the electrode plate for an inspection used for the vertical electrolyzer of FIG. It is a side view which shows the sample part of the electrode plate for an inspection of FIG. FIG. 6 is still another embodiment of the vertical electrolysis apparatus according to the present invention, and is a perspective view showing an electrode plate and an electrode support frame.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a vertical electrolysis apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

(First embodiment)
As shown in FIGS. 1 and 2, in the present embodiment, the vertical electrolysis apparatus 10 includes a cylindrical outer cylinder 11, and an upper lid 11 a and a lower lid 11 b that are positioned at upper and lower ends in the vertical direction, respectively. Thus, a cylindrical body having a predetermined pressure strength is formed. The lower lid 11b is provided with an inlet 16 for introducing chloride ion-containing water such as seawater as electrolysis target water, and the upper lid 11a is provided with an outlet 17 for discharging electrolytic water. ing.

  In addition, as the chloride ion-containing water that is the water to be electrolyzed, irrigation water, factory waste water, human waste, and sewage can be used in addition to seawater. When using industrial wastewater or human waste, salt can be added if the chloride ion concentration is low.

  In the outer cylinder 11 of the vertical electrolysis apparatus 10, an electrode support frame 12 having a square tube structure made of a plastic electric insulator such as PVC is provided. As shown in FIG. 2, the electrode support frame 12 is configured by first and second support frames 12a and 12b having a rectangular shape. Inside the electrode support frame 12, a plurality of bipolar electrode plates 18 are arranged in parallel and in multiple stages with a predetermined gap therebetween. Specifically, the plurality of bipolar electrode plates 18 are overlapped in parallel via the annular spacer 15, and are penetrated and supported by the insulating through bolts 13 and fixed in the electrode support frame 12. Thereby, an electrode cell in which a number of bipolar electrode plates 18 are fixed to the electrode support frame 12 is formed.

  As shown in FIGS. 3 and 4, the outer cylinder 11 of the vertical electrolysis apparatus 10 is provided with an outer inspection port 40 at a lower portion of the apparatus for periodic inspection and the like. The outer inspection port 40 includes a cylindrical frame portion 41 that extends horizontally from the outer cylinder 11 and a lid portion 42 that seals it. Similarly to the outer inspection port 40, an inner inspection port 50 is also installed in the electrode support frame 12 in the lower part of the apparatus.

  Of the many bipolar electrode plates 18 arranged in the electrode support frame 12, as shown in FIGS. 3 and 4, the inspection bipolar electrode plate 20 is arranged in the lower part of the vertical electrolyzer 10. The As the anode part 21, it is preferable to use a titanium material coated with a metal such as platinum or a metal oxide. The coating layer is more preferably platinum metal. Moreover, it is preferable to use titanium, iron, carbon steel, stainless steel, nickel, nickel alloy etc. for the cathode part 22, and titanium is more preferable.

  In the inspection bipolar electrode plate 20, a through hole 23 through which the through bolt 13 passes is formed in the cathode portion 22. The anode part 21 is composed of an anode body part 24 and a sample part 27 detachable from the anode body part 24. Although the dimension of the sample part 27 is not specifically limited, The magnitude | size which can carry out from the outer side inspection port 40 and the inner side inspection port 50 is preferable, For example, one side can be 30-60 mm.

  As shown in FIGS. 5 and 6, the anode main body portion 24 is formed with an insertion portion 26 protruding from the edge portion 25 at the edge portion 25 where the sample portion 27 is attached and detached. The thickness of the insertion portion 26 is preferably in the range of 1/4 to 1/2 of the thickness of the anode main body portion 24, and more preferably about 1/3. The insertion portion 26 is preferably located at the center of the edge portion 25. The length of the insertion part 26 is preferably in the range of 4 to 6 mm, for example.

  As shown in FIGS. 7 and 8, the sample portion 27 is formed with a slit 28 at an edge portion 29 where the anode main body portion 24 is attached and detached. The width of the slit 28 is preferably in the range of 1/4 to 1/2 of the thickness of the sample portion 27 according to the thickness of the insertion portion 26 so that the insertion portion 26 is in close contact, and about 1/3 is More preferred. The slit 28 is preferably located at the center of the edge portion 29. The depth of the slit 28 is preferably 3 to 5 mm, for example, in accordance with the length of the insertion portion 26.

  The shape of the insertion portion 26 is preferably tapered so that the insertion portion 26 and the slit 28 are in close contact with each other, and the shape of the slit 28 is formed on the back side in accordance with the shape of the insertion portion 26. It is preferable to have a tapered shape with a narrow width. In particular, it is desirable that the back side insertion portion 26 and the slit 28 have a main shape.

  5-8, the insertion part 26 is provided in the edge part 25 of the anode main-body part 24, the slit 28 is provided in the edge part 29 of the sample part 27, and the edge part 25 of the anode main-body part 24 and The insertion portion 26 is fitted into the slit 28 until the edge portion 29 of the sample portion 27 comes into contact, so that the sample portion 27 is attached to the anode main body 24. However, the present invention is limited to this configuration. Instead, as shown in FIG. 9, as another embodiment, the anode portion 21a can be configured by an anode main body portion 24a provided with a slit 28a and a sample portion 27a provided with an insertion portion 26a.

  As shown in FIG. 10, the inspection bipolar electrode plate 20 is preferably arranged so that the sample portion 27 is positioned in front of the inner inspection port 50. The inner inspection port 50 mainly includes an inspection window 53 that penetrates the electrode support frame 12, a lid portion 51 that seals the inspection window 53, and the lid portion 51 including the electrode support frame 12. In order to prevent the sample part 27 from falling off from the anode main body part 24, the lid part 51 reaches the inside of the inspection window 53 so that the inner surface of the lid part 51 restrains the sample part 27 as shown in FIG. 10. A projecting shape is preferred.

  According to such a configuration, first, chloride ion-containing water such as seawater enters the outer cylinder 11 of the vertical electrolysis device 10 from the inflow port 16, and between the bipolar electrode plates 18 in the electrode support frame 12. As it passes, it is electrolyzed. Thereby, sodium hypochlorite is generated, and water containing this sodium hypochlorite is discharged from the outlet 17. In the periodic inspection of the vertical electrolyzer 10, the inflow of chloride ion-containing water is stopped and all the chloride ion-containing water inside is discharged. And the cover part 42 of the outer side inspection port 40 and the cover part 51 of the inner side inspection port 50 are opened, and the sample part 27 is extracted from the bipolar electrode plate 20 for an inspection.

  When the electrolysis is performed over a long period of time, the coating layer on the titanium surface is consumed in the anode portion 21. Therefore, the consumption of the coating layer is determined by measuring the film thickness of the surface of the sample portion 27 extracted. be able to. The consumption of the coating layer tends to be intense in the lower part of the vertical electrolyzer 10, so by measuring the film thickness of the inspection bipolar electrode plate 20 arranged in the lower part of the vertical electrolyzer 10, The consumption of the coating layer of the entire bipolar electrode plate 18 of the vertical electrolytic device 10 can be grasped without taking out the entire electrode cell in which a large number of bipolar electrode plates 18 are fixed to the electrode support frame 12 from the vertical electrolytic device 10. can do. In FIG. 4, only one inspection bipolar electrode plate 20 is shown, but a plurality of inspection bipolar electrode plates 20 may be attached.

(Second Embodiment)
Another embodiment of the vertical electrolysis apparatus according to the present invention will be described. As shown in FIG. 11, the vertical electrolysis apparatus 100 is provided with a number of bipolar electrode plates 130 as in FIG. 1 of the first embodiment. The bipolar electrode plate 120 is installed in the upper part of the vertical electrolyzer 100, and is preferably installed in the uppermost stage. A normal bipolar electrode plate 130 is composed of a cathode portion 131 and an anode portion 132 as in the above-described embodiment.

  As shown in FIGS. 12 and 13, the inspection bipolar electrode plate 120 is also composed of a cathode part 121 and an anode part 122, and the inspection bipolar electrode plate 120 has a sheath type on the upper and lower sides thereof. A spacer 110 is provided. A slit 112 having a width capable of inserting the inspection bipolar electrode plate 120 is formed at the edge 111 of the sheath type spacer 110. The sheath type spacer 110 is made of a plastic insulating material such as PVC. During the periodic inspection, by removing the inspection bipolar electrode plate 120 from between the upper and lower sheath spacers 110, the consumption of the coating layer on the anode surface can be measured as described above.

  Since the inspection bipolar electrode plate 120 is installed above the vertical electrolysis apparatus 100, the inspection bipolar electrode plate 120 can be extracted without taking out the entire electrode cell from the apparatus. . Moreover, since the sheath type spacer 110 is installed in the upper part of the vertical electrolyzer 100, the influence on the strength structure of the vertical electrolyzer 100 is very small.

(Third embodiment)
Still another embodiment of the vertical electrolysis apparatus according to the present invention will be described. As shown in FIGS. 14 and 15, in the vertical electrolysis apparatus 200 of the present embodiment, the inspection bipolar electrode plate 220 has a vertical electrolysis as in FIGS. 3 and 4 of the first embodiment. The bipolar electrode plate 220 for inspection is arranged in the lower part of the apparatus 200. As shown in FIGS. 16 and 17, the sample portion 225 extends from the upper end to the lower end of the bipolar electrode plate. In this configuration, the anode portion 221 and the cathode portion 222 are partially provided on the inspection port side.

  An insulating portion 228 made of plastic such as PVC is formed between the sample portion 225 and the bipolar electrode plate main body portion 224. As shown in FIG. 17, the insulating portion 228 is fixed to the sample portion 225 side. A through hole 223 for fixing to the electrode support frame is formed on the bipolar electrode plate body 224 side. Sheath-type spacers (not shown) are disposed above and below the sample portion 225, respectively. The configuration of the sheath type spacer is the same as the configuration shown in FIG. By extracting the sample portion 225 from between the upper and lower sheath-shaped spacers, as described above, the deterioration of the coating on the anode surface can be measured.

  Since the sample portion 225 of the inspection bipolar electrode plate 220 is long in the vertical direction, unlike the embodiment shown in FIGS. 1 to 9, as shown in FIGS. The inner inspection port 250 also needs to be configured to be long in the vertical direction according to this.

(Fourth embodiment)
Still another embodiment of the vertical electrolysis apparatus according to the present invention will be described. As shown in FIG. 18, the bipolar electrode plate 320 of the present embodiment is composed of a cathode portion 321 and an anode portion 322. At least one positioning plate is positioned on the anode portion 322 or preferably the cathode portion 321. A hole 330 is formed. The positioning hole 330 is not particularly limited as long as it is other than the central axis 331 of the bipolar electrode plate 320. This bipolar electrode plate 320 is directly installed on the surface of the electrode support frame 312. Therefore, the coating layer is formed on the anode part 322 only on one surface through which chloride ion-containing water flows. .

  Positioning protrusions 313 are arranged on the surface of the electrode support frame 312 so that the positioning holes 330 are fitted when the bipolar electrode plate 320 is placed at the correct position. Therefore, in the state where the front and back surfaces of the bipolar electrode plate 320 are opposite, the bipolar electrode plate 320 can be prevented from being attached to the opposite side because the electrode support frame 312 cannot be installed at the correct position.

DESCRIPTION OF SYMBOLS 10 Vertical type electrolysis apparatus 11 Outer cylinder 12 Electrode support frame 13 Through bolt 15 Annular spacer 16 Inlet 17 Outlet 18 Bipolar electrode plate 20 Bipolar electrode plate 21 for inspection 21 Anode part 22 Cathode part 23 Through hole 24 Anode body part 25 Edge portion of anode body portion 26 Insertion portion 27 Sample portion 28 Slit 29 Edge portion of sample portion 40 Outer inspection port 41 Frame portion 42 Lid portion 50 Inner inspection port 51 Lid portion 52 Stop bolt 53 Inspection window 100 Vertical electrolyzer 110 Sheath-type spacer 111 Edge 112 of sheath-type spacer Slit 120 Bipolar electrode plate 121 for inspection Cathode portion 122 Anode portion 130 Secondary electrode plate 131 Cathode portion 132 Anode portion 200 Vertical electrolyzer 220 Bipolar electrode plate for inspection 221 Anode portion 222 Cathode portion 223 Through hole 224 Bipolar electrode plate body portion 225 Sample portion 228 Insulating portion 240 Side access door 250 inside access hole 312 electrode support frame 313 hole 331 center axis of the protrusion 320 bipolar electrode plate 321 cathode 322 anode 330 for positioning the positioning

Claims (5)

An outer cylinder in which chloride ion-containing water circulates in the vertical direction;
A plurality of electrode plates fixed in the outer cylinder;
A vertical electrolysis apparatus comprising an inspection port accessible to at least one electrode plate among the plurality of electrode plates, wherein an anode portion of the at least one electrode plate includes an anode portion main body, A sample part that can be attached to and detached from the anode part main body, and a slit is formed at one of the anode part main body and the sample part at an edge part to be attached and detached, and the anode part main body or the sample part The other is a vertical electrolysis apparatus in which an insertion portion that fits into the slit is formed at an edge portion to be attached and detached.   An electrode plate for electrolyzing water containing chloride ions, the anode part of the electrode plate comprising an anode part body and a sample part detachable from the anode part body, the anode part body Alternatively, a slit is formed in a part of the sample part at an edge part where attachment / detachment is performed, and the other part of the anode part main body or the sample part is inserted into the slit in an edge part where attachment / detachment is performed. The electrode plate in which the part is formed. An outer cylinder in which chloride ion-containing water circulates in the vertical direction;
A plurality of electrode plates fixed in the outer cylinder;
A vertical electrolysis apparatus comprising: a pair of spacers that are positioned above and below at least one of the plurality of electrode plates and that detachably sandwich the at least one electrode plate. An outer cylinder in which chloride ion-containing water circulates in the vertical direction;
A plurality of electrode plates fixed in the outer cylinder;
An inspection port accessible to at least one of the plurality of electrode plates;
A vertical electrolysis apparatus comprising a pair of spacers positioned above and below the at least one electrode plate and detachably sandwiching the at least one electrode plate, wherein the at least one electrode plate is fixed A vertical electrolysis apparatus comprising: an electrode plate main body; and a sample portion that is detachable from the spacer via the electrode plate main body and an insulator. An outer cylinder in which chloride ion-containing water circulates in the vertical direction;
A vertical electrolysis apparatus comprising a plurality of electrode plates fixed to an electrode support frame in the outer cylinder, wherein the electrode plate is directly fixed to the surface of the electrode support frame among the plurality of electrode plates Is formed with a positioning hole at a position asymmetric with respect to the central axis of the electrode plate, and a positioning projection is formed on the surface of the electrode support frame to fit into the positioning hole. Vertical electrolyzer.

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