KR20080087515A - Apparatus and method using seawater electrolysi - Google Patents

Abstract

A seawater electrolyzing apparatus is provided to maintain performance of the apparatus stably and prolong service life of the apparatus by preventing scales from forming on electrode members, and a seawater electrolyzing method using the seawater electrolyzing apparatus is provided. A seawater electrolyzing apparatus comprises: a module formed by connecting a plurality of cells; and a power supply part for applying a power source to the module. Each of the cells(A) comprises: a case(2) on which an inlet and an outlet(24) are formed, and which has a receiving part(20) formed in an inner side thereof; and a plurality of electrode members(4) installed in the receiving part of the case. Each of the electrode member comprises: a pair of pole plate parts(P1) including a first plate(41) having a vertical electrode line(414) and a second plate(42) having a horizontal electrode line(424), the first plate and the second plate being superposed on each other to form an intersecting point, the pole plate parts being alternately superposed on one another to form plural pairs of pole plate parts; and first and second electrode rods(61,62) for applying a power source to both sides of the first and second plates of the plural pairs of pole plate parts. The first plate includes a ring-shaped edge member(412), a plurality of vertical electrode lines formed at an inner side of the edge member, and a through hole(410) formed in one side of the edge member. The second plate includes a ring-shaped edge member(422), a plurality of horizontal electrode lines formed at an inner side of the edge member, and a through hole(420) formed in the other side of the edge member. Further, a packing(3) is inserted into the first and second electrode rods.

Description

Seawater electrolysis device and seawater electrolysis method using the same {apparatus and method using seawater electrolysi}

1 shows a prior art.

2 is a block diagram of a seawater electrolysis apparatus according to the present invention.

3 is an exploded perspective view of the "cell" in the seawater electrolysis apparatus of FIG.

4 is a plan view showing an example of lamination of "cells" in the seawater electrolysis apparatus of the present invention.

5 is a side cross-sectional view showing an example of lamination of cells in the seawater electrolysis apparatus of the present invention.

Figure 6a is a view showing an embodiment of the cell in the seawater electrolysis apparatus of the present invention, Figure 6b is a view showing another embodiment of the cell in the seawater electrolysis apparatus of the present invention.

Explanation of symbols on the main parts of the drawings

2: case 3: packing

4: electrode member 41: first plate

42: second plate 61: first electrode

62: second electrode P1, P2, P3, P4,... : Plate part

414 vertical electrode line 424 horizontal electrode line

X1, X2,... Intersection

The present invention relates to a seawater electrolysis apparatus and a seawater electrolysis method using the same, and more particularly, to prevent the formation of scale on the electrode member, the performance can be stably maintained, and the seawater electrolysis apparatus which can extend its life. It relates to the seawater electrolysis method used.

Thermal and nuclear power plants are usually located near the sea because they need to have sufficient cooling facilities.

That is, the seawater is used as cooling water for cooling the turbine of the power plant. Since the cooling facility of the power plant turbine has warm water temperature, shellfish and plankton inhabit the cooling efficiency.

Therefore, a seawater electrolyzer is used to prevent these marine organisms from living by maintaining the chlorine concentration at 2 ppm by electrolyzing seawater used as cooling water to generate sodium hypochlorite.

In the conventional seawater electrolysis device, 17 flat electrodes of 90 × 33 cm are installed to form one cell, and a plurality of cells are collected to form one module, and include a power supply unit for supplying power to the module. In general, one module is composed of 7 to 12 cells.

Approximately 500 MW power plants use four modules with 12 cells.

As shown in FIG. 1, the conventional cell A 'has a case 2' having an inlet 22 'and an outlet 24' formed therein and having a receiving portion 20 'therein, and the accommodation. And a plurality of electrode members 4 'installed in the portion 20', and a power supply unit (not shown) for supplying power to the electrode members 4 '.

Each electrode member 4 'is fixedly supplied with power of the positive and negative poles, and an electric field E is formed on the electrode member 4' by applying power. The water molecules are pulled by the electric attraction and eventually the water molecules are decomposed.

Thus, by electrolysis of sea water of sodium hypochlorite (NaOCl) and ^{H +, OH -, O -} , 0 3 -, are generated, such as Na ^+, HOCl.

However, when the cell of the conventional seawater electrolysis device is used for a long time, the metal ion generated during electrolysis is fixed to the electrode member of the specific electrode, thereby forming a scale, resulting in a decrease in electrolytic efficiency.

Therefore, since the scale must be removed by washing the electrode member having the scale fixed at regular intervals by pickling, there is a problem in operation, and in particular, a problem of environmental pollution occurs due to the contaminated water generated during pickling.

The present invention has been made to solve the above problems of the prior art, and has a mesh-shaped electrode member so that the scale is not fixed by improving the structure of the electrolytic electrode plate, and by increasing the number of the electric field to be discharged electric It is an object of the present invention to provide a seawater electrolysis device capable of improving the decomposition performance.

In addition, according to the present invention, by applying alternating power of the electrode member, the scale that has been fixed by the polarity switching of the power source can be naturally removed, so that the performance efficiency can be increased, and the seawater electrolysis using a seawater electrolytic device that is easy to maintain. There is another purpose in providing a method.

The object of the present invention described above,

A seawater electrolysis device comprising a module formed by connecting a plurality of cells formed by installing a plurality of electrode members in a case where an inlet and an outlet of sea water are formed, and a power supply unit for supplying power to the module. In the electrode member, a pair of pole plates is formed by overlapping a first plate having a vertical electrode line and a second plate having a horizontal electrode line so that intersections are formed, and the pole plate portions are alternately overlapped in multiple pairs. It can be achieved by the seawater electrolysis device, characterized in that the first and second electrode rods are installed to apply power to both sides of the first and second plates constituting the pair of pole plate portion.

In addition, the object of the present invention,

An inlet and an outlet are formed, and a plurality of electrode members are installed inside the case to form a module by connecting a plurality of cells, and a power supply unit for applying power to the module is installed. The electrode member is a vertical electrode. A pair of pole plates is formed by overlapping a first plate having a line and a second plate having a horizontal electrode line so as to form an intersection point. The pair of pole plates is alternately overlapped and installed in a plurality of pairs. In the seawater electrolysis method using a seawater electrolysis device provided with first and second electrode rods for supplying power to both sides of the second plate, alternately applying power to the first and second electrode rods and the first plate and According to the seawater electrolysis method using the seawater electrolysis device, characterized in that the polarity of the power applied to the second plate can be switched Can be achieved.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of the seawater electrolysis apparatus according to the present invention.

As shown in FIG. 2, the seawater electrolysis device T of the present invention comprises a module M by connecting a plurality of cells A, and a power supply unit 100 for applying power to the module M. As shown in FIG. Is installed and configured.

3 is an exploded perspective view of the "cell" in the seawater electrolysis apparatus of FIG.

As shown in FIG. 3, the cell A includes an inlet 22 and an outlet 24 and a case 2 in which an accommodating part 20 is formed, and an accommodating part 20 of the case 2. It consists of the several electrode member 4 provided.

The electrode member 4 overlaps the first plate 41 having the vertical electrode line 414 and the second plate 42 having the horizontal electrode line 424 so that an intersection is formed so that the pair of pole plates ( P1) is configured, and the pole plate portions P1 are alternately superimposed in a plurality of pairs P2, P3, P4, ..., and the first and second portions of the pole plate portions P1, P2, P3, P4,... The first and second electrode rods 61 and 62 for applying power to both sides of the plates 41 and 42 are provided (see Fig. 5).

The vertical electrode line 414 of the first plate 41 and the horizontal electrode line 424 of the second plate 42 may overlap each other at right angles.

The first plate 41 has a ring-shaped frame member 412, a plurality of vertical electrode lines 414 and a first electrode bar 61 connected to the inside of the frame member 412. It consists of a through hole 410 formed on one side of the (412).

The second plate 42 also has a ring-shaped edge member 422 having the same size as the first plate 41 described above, a plurality of horizontal electrode lines 424 inside the edge member 422, It consists of a through hole 420 formed on the other side of the frame member 422 so that the second electrode bar 62 can be connected.

That is, the through hole 420 of the second plate 42 is preferably formed at a position opposite to the through hole 410 of the first plate 41.

In addition, a predetermined packing 3 is interposed between the first plate 41 and the second plate 42, and the packing 3 is disposed at a position corresponding to the through holes 410 and 420. The second electrode rods 61 and 62 are fitted to each other.

4 is a plan view illustrating a lamination example of cells in the seawater electrolysis apparatus of the present invention.

As shown in FIG. 4, the intersection point X2 of the first and second plates 41 and 42 of the other electrode plate portion P2 overlapping the lower portion of the upper electrode plate portion P1 is the upper electrode plate portion P1. It is preferable to be arranged so as to deviate from the intersection point X1 of, so that more intersection points can be formed without interference.

5 is a side cross-sectional view showing an example of lamination of cells in the seawater electrolysis apparatus of the present invention.

As shown in FIG. 5, when the first plate 41 having the vertical electrode line 414 and the second plate 42 having the horizontal electrode line 424 overlap, the thickness of the packing 3 is perpendicular to the thickness of the packing 3. The horizontal electrode line 424 may be spaced apart to form an electric field E that can be discharged at a high voltage.

Hereinafter will be described the binding and action of the present invention.

The electrode member 4 is installed inside the case 2, and the first and second electrode rods 61 and 62 are connected to the electrode member 4 to enable energization.

The electrode member overlaps the first and second plates 41 and 42 to form the pole plates P1, P2, P3, P4,..., And the vertical electrode lines of the first and second plates 41 and 42. 414 and the horizontal electrode line 424 intersect and overlap each other, and is constructed by alternately overlapping a plurality of electrode plates P1, P2, P3, P4, ... configured in this way.

In this case, the first electrode rod 61 is connected to the through holes 410 of the plurality of first plates 41 constituting the plurality of pole plates P1, P2, P3, P4,.

In addition, one cell A is connected by connecting the second electrode 62 to the through holes 420 of the plurality of second plates 42 constituting the plurality of electrode plates P1, P2, P3, P4,... Assembly is complete.

Here, the installation method of the electrode member 4 may be divided into two types.

That is, Figure 6a is a view showing an embodiment of the cell in the seawater electrolysis apparatus of the present invention, Figure 6b is a view showing another embodiment of the cell in the seawater electrolysis apparatus of the present invention.

As shown in FIG. 6A, the electrode member 4 may be installed in a vertical form so as to be reverse to the direction in which seawater flows.

In addition, as shown in FIG. 6B, the electrode member 4 may be provided in a horizontal form so as to be in a forward direction with respect to the direction in which seawater flows.

As shown in FIG. 2, the cell A assembled as described above is connected to a plurality of units in series inside the module M, and a power supply unit for supplying power to the cell A outside the module M. FIG. 100 is installed to complete the assembly of the seawater electrolysis apparatus T of the present invention.

After the assembly is completed, seawater to be used as cooling water is introduced into the module M, and power is applied to the first and second electrode rods 61 and 62 of each cell A.

For example, a positive electrode is applied to the first electrode 61 and a negative electrode is applied to the second electrode 62.

When power is applied to the first and second electrode rods 61 and 62, a positive electrode is applied to the first plate 41 connected to the first electrode rod 61, and the second electrode rod 62 is connected to the second electrode rod 62. The negative electrode is applied to the two plates 42.

Therefore, the discharge occurs in the electric field E, which is the intersection of the first plate 41 and the second plate 42, so that seawater is electrolyzed and sodium hypochlorite is generated.

At this time, the intersection point X2 of the first and second plates 41 and 42 of the other electrode plate portion P2 overlapping the lower portion of the upper electrode plate portion P1 is the intersection point of the upper electrode plate portion P1 as described above. By arranging to deviate from (X1), more intersections can be formed without interference, and the electrolysis efficiency of water can be greatly increased, so that more sodium hypochlorite can be generated, which can block aquatic life. The composition becomes easy.

On the other hand, the polarity of the power applied to the first and second plates 41 and 42 is switched at regular intervals.

That is, a negative electrode is applied to the first electrode 61 and a positive electrode is applied to the second electrode 62 so that the negative electrode is applied to the first plate 41 and the second plate is applied. A positive electrode is applied to (42).

By switching the polarity of the power source, the scale, that is, the metal ions fixed to a specific plate can be naturally separated and removed.

For example, a metal ion having a negative charge was fixed to the first plate 41 of the (+) pole, but the polarity of the first plate 41 was switched to the (-) pole, resulting in a negative (-). Charged metal ions naturally fall apart.

This process is similarly performed in the polarity switching of the second plate 42 of the negative electrode.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be readily apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, all such modifications and modifications being attached It is obvious that the claims belong to the claims.

As described above, according to the present invention, the electrolytic performance can be improved by improving the structure of the electrolytic electrode plate so as to have a mesh-shaped electrode member so that the scale is not fixed, and increasing the number of the electric field where discharge is performed. It has an effect.

In addition, by alternately applying the power source of the electrode member, the scale that has been fixed by the polarity switching of the power source can be naturally removed, so that the performance efficiency can be increased, and the maintenance is easy.

Claims (7)

A seawater electrolysis device comprising a module formed by connecting a plurality of cells formed by installing a plurality of electrode members in a case where an inlet and an outlet of sea water are formed, and a power supply unit for supplying power to the module. To The electrode member 4, A pair of pole plate portions P1 are formed by overlapping the first plate 41 having the vertical electrode line 414 and the second plate 42 having the horizontal electrode line 424 so as to form an intersection point. The pole plate portion P1 is configured by alternately overlapping a plurality of pairs (P2, P3, P4, ...), First and second electrode rods 61 and 62 provided to apply power to both sides of the first and second plates 41 and 42 constituting the plurality of pairs of pole plate portions P1, P2, P3, P4,... Seawater electrolysis device, characterized in that consisting of. The method of claim 1, A packing 3 is interposed between the first plate 41 and the second plate 42, and the intersection points X1, X2... Of the vertical and horizontal electrode lines 414, 424 are separated by the thickness of the packing 3. Seawater electrolysis device characterized in that the electric field (E) is formed. The method according to claim 1 or 2, The packing (3) is a seawater electrolysis device, characterized in that the installation is fitted to the first and second electrode rods (61, 62). The method of claim 1, The plurality of pairs of pole plate portions P1, P2, P3, P4, ... are arranged so that the intersection points X1, X2 ... of the pole plate portions P1, P2, P3, P4, ... are mutually displaced so as not to interfere. Seawater electrolysis device characterized in that. The method of claim 1, The electrode member (4) is a seawater electrolysis device, characterized in that installed in a horizontal form so as to be reverse to the direction in which the seawater flows. The method of claim 1, The electrode member (4) is a seawater electrolysis device, characterized in that installed in the vertical form so as to be in the forward direction with respect to the direction in which the seawater flows. Module (M) is formed by connecting a plurality of cells (A) by installing a plurality of electrode members (4) inside the case (2) in which the inlet (22) into which seawater is introduced and the outlet (24) formed are discharged. In addition, a power supply unit 100 for applying power to the module M is provided, and the electrode member 4 includes a first plate 41 having a vertical electrode line 414 and a horizontal electrode line 424. A pair of pole plate portions P1 are formed by overlapping the second plates 42 having the cross-section to form an intersection, and the pole plate portions P1 are alternately overlapped in a plurality of pairs P2, P3, P4,... The first and second electrode rods are configured to apply power to both sides of the first and second plates 41 and 42 constituting the plurality of pairs of pole plate portions P1, P2, P3, P4,. In the seawater electrolysis method using a seawater electrolysis device consisting of (61,62), Periodically alternating power is applied to the first and second electrode rods 61 and 62 so that the polarity of the power applied to the first plate 41 and the second plate 42 can be switched. Seawater electrolysis method using a seawater electrolysis device.

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