WO2020017694A1

WO2020017694A1 - Cylindrical reverse electrodialysis generator

Info

Publication number: WO2020017694A1
Application number: PCT/KR2018/011682
Authority: WO
Inventors: 황교식; 정남조; 남주연; 김한기; 김찬수; 한지형; 최지연; 양승철; 박철호; 좌은진; 정해준
Original assignee: 한국에너지기술연구원
Priority date: 2018-07-16
Filing date: 2018-10-02
Publication date: 2020-01-23
Also published as: KR20200008282A; KR102074257B1

Abstract

The present invention provides a cylindrical reverse electrodialysis generator comprising: a hollow cylindrical housing; an inner electrode disposed in the central portion of the housing; an outer electrode disposed on an edge in the housing; and a plurality of ion exchange membranes disposed between the inner electrode and the outer electrode and wound along the circumferential direction of the inner electrode so as to separate one or more first flow paths through which a high concentration solution flows from one or more second flow paths through which a low concentration solution flows.

Description

Cylindrical Reverse Electrodialysis Generator

The present invention relates to a cylindrical reverse electrodialysis generator.

Reverse electrodialysis (RED) refers to the recovery of salinity or concentration difference energy in the form of electrical energy from the mixing of two fluids of different concentrations, eg seawater and fresh water.

More specifically, reverse electrodialysis (RED) is a system for generating a salt difference using seawater and freshwater, and ions move through an ion exchange membrane (cation exchange membrane and anion exchange membrane) due to a difference in concentration between seawater and freshwater. It is a device that generates an electric potential difference between electrodes (positive electrode and negative electrode) at both ends of a stack in which ion exchange membranes are alternately arranged, and generates electric energy through a redox reaction on the electrode.

In other words, it is a power generation method that directly converts chemical energy generated as ions dissolved in seawater (salt water) into fresh water through an ion exchange membrane.

In general, a reverse electrodialysis (RED) device is a stack in which a plurality of ion exchange membranes are alternately arranged between electrodes (positive electrodes and negative electrodes) at both ends, and in order to manufacture a stack, an ion exchange membrane, a spacer, and a gasket are used. Gaskets should be stacked continuously, and at least several hundred cells must be stacked to increase the capacity of the stack.

However, such stacked stacks require hundreds to thousands of ion exchange membranes, spacers, and gaskets to be stacked in a straight line, which takes a long time and requires a lot of labor. In addition, in the case of a stack stack, it is difficult to manufacture by an automated process, which inevitably decreases productivity.

In addition, the reverse electrodialysis (RED) device has to stack a stack of hundreds of cells and fasten the stack at high pressure to prevent leakage of low and high concentrations of solution supplied into the stack. Is needed.

However, there is a limit to uniformly tighten the pressure of the stack with bolts, so there is a problem in that a fine leakage phenomenon occurs continuously and the performance of the device is degraded due to leakage of the supplied solution. Difficult to disassemble / assemble, there was a problem that makes it difficult to maintain the device.

Therefore, the stack manufacturing is easier, the automation process is easy, and the leakage manufacturing and easy maintenance of the stack manufacturing technology is required.

An object of the present invention is to provide a cylindrical reverse electrodialysis power generation device, which can prevent the above-mentioned problems occurring when operating the conventional reverse electrodialysis (RED) device.

In order to achieve the above object, the present invention, the cylindrical housing having a hollow; An inner electrode disposed in the central portion of the hollow in the housing; An outer electrode disposed at an edge of the hollow in the housing; And a plurality of ion exchange membranes disposed between the inner electrode and the outer electrode and wound along the circumferential direction of the inner electrode to partition one or more first flow paths through which the high concentration solution flows and one or more second flow paths through which the low concentration solution flows; It provides a reverse electrodialysis generator comprising a.

In addition, the present invention, the plurality of reverse electrodialysis generators described above; And a power converter having a plurality of mounting spaces to accommodate each of the reverse electrodialysis generators. Each of the plurality of mounting spaces includes: first and second fluid supply pipes provided to supply a low concentration solution or a high concentration solution to each of the second fluid supply holes; First and second fluid discharge pipes configured to discharge fluid discharged from each of the second fluid discharge holes to the outside; A third fluid supply pipe provided to supply fluid to the first inflow port; A third fluid discharge pipe provided to discharge the fluid discharged from the second discharge port to the outside; And a plurality of support members provided to support the reverse electrodialysis generator. It provides a reverse electrodialysis power generation system comprising a.

In addition, the present invention, the inner electrode; A first roller on which the first ion exchange membrane is wound; A second roller on which the first spacer is wound; A third roller on which the second ion exchange membrane is wound; A fourth roller on which the second spacer is wound; And a fifth roller provided so that the first ion exchange membrane, the first spacer, the second ion exchange membrane, and the second spacer respectively wound on the first to fourth rollers are sequentially stacked and wound on the inner electrode. It provides an ion exchange membrane production apparatus comprising a.

According to the present invention, the manufacturing process is simpler than the conventional reverse electrodialysis (RED) device, so that the stack can be manufactured quickly with less labor, and the automation process is possible, thereby increasing productivity.

In addition, there is no need for fastening the bolt at high pressure when manufacturing the reverse electrodialysis apparatus, so that the maintenance and repair of the device is easier than in the related art.

1 is an exploded perspective view of a cylindrical reverse electrodialysis apparatus according to an embodiment of the present invention.

2 to 4 is a view showing a cylindrical reverse electrodialysis apparatus according to an embodiment of the present invention.

5 is a cross-sectional view of a cylindrical reverse electrodialysis apparatus according to an embodiment of the present invention.

6 and 7 are views illustrating an ion exchange membrane according to an embodiment of the present invention.

8 and 9 are views illustrating an ion exchange membrane according to another embodiment of the present invention.

10 is a view showing a state in which a spacer is disposed on the ion exchange membrane according to another embodiment of the present invention.

11 is a diagram illustrating an inner electrode according to an exemplary embodiment of the present invention.

12 illustrates an inner electrode according to another exemplary embodiment of the present invention.

13 is a cross-sectional view illustrating an ion exchange membrane wound on an inner electrode according to an embodiment of the present invention.

14 is a view showing a state in which a pair of sealing gaskets are coupled to an ion exchange membrane according to an embodiment of the present invention.

15 is a view showing a housing according to an embodiment of the present invention.

16 and 17 illustrate a fluid distribution member according to an embodiment of the present invention.

18 and 19 illustrate a fluid supply member according to an embodiment of the present invention.

20 is a coupling diagram in which a fluid supply member and a fluid distribution member are coupled according to an embodiment of the present invention.

21 is a view showing the fluid flow of the reverse electrodialysis apparatus according to an embodiment of the present invention.

22 is a view showing the fluid flow of the reverse electrodialysis apparatus according to another embodiment of the present invention.

23 and 24 are views shown to explain a reverse electrodialysis power generation system according to an embodiment of the present invention.

25 and 26 are views for explaining a third supply unit according to an embodiment of the present invention.

27 and 28 are schematic views showing an ion exchange membrane production apparatus according to an embodiment of the present invention.

29 is a partially enlarged view illustrating a spacer according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that it can be defined.

In addition, irrespective of the reference numerals, the same or corresponding components will be given the same or similar reference numerals, and redundant description thereof will be omitted. Can be.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

The present invention relates to a cylindrical reverse electrodialysis (RED) device, and more particularly to a device for winding a cylindrical reverse electrodialysis device, a system using the same and an ion exchange membrane disposed in the reverse electrodialysis device.

1 is an exploded perspective view of a cylindrical reverse electrodialysis apparatus according to an embodiment of the present invention Figures 2 to 4 is a view showing a cylindrical reverse electrodialysis apparatus 10 according to an embodiment of the present invention, Figure 5 is a present invention A cross-sectional view of a cylindrical reverse electrodialysis apparatus 10 according to one embodiment of the present invention.

1 to 5, the cylindrical reverse electrodialysis apparatus 10 of the present invention includes a cylindrical housing 100 having a hollow, an inner electrode 200 disposed in a central portion of the hollow in the housing, and an edge of the hollow in the housing. The outer electrode 300 and the plurality of ion exchange membranes 400 wound along the circumferential direction of the inner electrode 200 are included.

More specifically, the housing 100 may be provided in a cylindrical shape having a hollow with both ends open.

In addition, the plurality of ion exchange membranes 400 may be provided to partition one or more first flow passages 410 through which a high concentration solution flows and one or more second flow passages 420 through which a low concentration solution flows.

The plurality of ion exchange membranes 400 may include a cation exchange membrane C and an anion exchange membrane A, and may be stacked such that the cation exchange membrane C and the anion exchange membrane A are in contact with each other.

Here, the plurality of ion exchange membranes 400 may each include at least one cation exchange membrane and an anion exchange membrane.

For example, when the plurality of ion exchange membranes 400 are two or more, the cation exchange membrane and the anion exchange membrane may be alternately stacked.

In addition, the plurality of ion exchange membranes 400 may be wound on the inner electrode to be disposed between the inner electrode 200 and the outer electrode 300.

In addition, the inner and

outer electrodes

200 and 300 may be electrically connected.

Therefore, electricity may be produced at the inner and outer electrodes by the concentration difference between the high concentration solution and the low concentration solution flowing through the first flow path 410 and the second flow path 420, respectively.

6 and 7 illustrate an ion exchange membrane 400 according to an embodiment of the present invention.

First, the plurality of ion exchange membranes 400 of the present invention include a flow path guide for guiding the flow of the fluid so that the fluid flowing in the first flow path and the second flow path flows along the axial direction of the housing.

More specifically, referring to FIG. 6, the flow path guide part includes a plurality of flow path members 450 for guiding the flow of fluid on the ion exchange membrane.

The plurality of flow path members 450 may be disposed to be spaced apart from each other by predetermined intervals on both

end portions

401a and 401b in the axial direction of the ion exchange membrane.

The flow path member 450 is disposed along the circumferential direction on the side of the plurality of first flow path members 451 and the other end 401b which are disposed at predetermined intervals along the circumferential direction on one end 401a side of the ion exchange membrane 400. The plurality of second flow path members 452 may be disposed to be spaced apart from each other, and the second flow path members 452 may be disposed between two adjacent first flow path members 451 along the circumferential direction.

Here, both ends 401a and 401b along the axial direction of the ion exchange membrane mean one end 401a and the other end 401b based on the width direction W of the ion exchange membrane.

More specifically, a spacer 453 may be provided between the ion exchange membrane 400 and the plurality of flow path members 450 to guide the flow of the fluid.

That is, a spacer 453 may be stacked on the ion exchange membrane 400, and a plurality of flow path members 450 may be provided on the spacer 453.

Here, the flow path member 450 may be provided to have the same height as the spacer 453.

The spacer 453 may be, for example, a spacer having a diamond structure, but is not limited thereto.

In addition, the flow path member 450 may be, for example, an adhesive, but is not limited thereto.

In addition, referring to FIG. 6C, when the plurality of ion exchange membranes 400 are laminated to be wound on the inner electrode, the first flow path member 451 of the cation exchange membrane and the first flow path member of the anion exchange membrane 451 ′ may be arranged to be staggered from each other.

That is, when the ion exchange membranes are stacked, the first flow path member 451 of the cation exchange membrane C is disposed to be positioned between two adjacent first flow path members 451 'of the anion exchange membrane A. It may be provided alternately along the longitudinal direction (L), that is, in the circumferential direction.

Here, the circumferential direction means the same direction as the circumferential direction of the housing.

Although not shown, when the plurality of ion exchange membranes are stacked, the second flow path member of the cation exchange membrane and the second flow path member of the anion exchange membrane may be provided to be alternated with each other.

That is, when the ion exchange membrane is stacked, the second flow path member of the cation exchange membrane is disposed to be positioned between two adjacent second flow path members of the anion exchange membrane, and may be alternately provided along the circumferential direction L of the ion exchange membrane. have.

As described above, by arranging the first flow path member 451 and the second flow path member 452 to cross each other, the flow of the fluid can flow in an oblique direction on the ion exchange membrane, as shown by the arrow shown in FIG.

In particular, by using a spacer of diamond structure, turbulence can be formed in the fluid while guiding the fluid in a diagonal direction.

Referring to FIG. 7, when the ion exchange membrane 400 including the plurality of flow path members 450 is wound around the inner electrode 200, each of the ion exchange membranes 400 wound along the inner electrode circumferential direction may be described. The first flow path 410 and the second flow path 420 are partitioned.

In particular, the first flow path members 451 and 451 'disposed in the cation exchange membrane and the anion exchange membrane are alternately alternately arranged along the circumferential direction of the inner electrode.

In addition, the second flow path members 452 and 452 'disposed in the cation exchange membrane and the anion exchange membrane are alternately alternately arranged along the circumferential direction of the inner electrode.

Only the high concentration solution flows into the first flow path 410 by the plurality of flow path members 450 disposed as described above, and only the low concentration solution flows into the second flow path 420.

That is, the low concentration solution may be blocked from flowing into the first flow path 410, and the high concentration solution may be blocked from flowing into the second flow path 420.

For example, a low concentration solution is supplied to the second flow path 420 from the fluid distribution member 600 coupled to the one end 401a side of the wound ion exchange membrane 400, and coupled to the other end 401b side. When the high concentration solution is supplied from the fluid distribution member 600 to the first flow path 410, the low concentration solution flows out of the fluid in the first axial direction D1, and the high concentration solution flows in the second axial direction D2. And discharged.

At this time, electricity may be produced by the concentration difference between the fluid flowing through the first flow path 410 and the second flow path 420.

8 and 9 are views illustrating a flow path guide part provided on the ion exchange membrane 400 according to another exemplary embodiment of the present invention.

Referring to FIG. 8, the flow path guide part includes a plurality of channel ribs 430 for guiding a flow of a fluid on an ion exchange membrane.

The channel ribs 430 may be provided to extend along the axial direction of the housing 100, and the plurality of channel ribs 430 may be spaced apart from each other along a circumferential direction of the housing.

More specifically, the channel rib 430 may be formed to protrude to guide the flow of fluid on the ion exchange membrane 400, and may be formed to extend along the width direction W of the ion exchange membrane 400. .

In this case, the channel ribs 430 may be provided to be spaced apart from each other along the longitudinal direction L of the ion exchange membrane 400.

The channel rib 430 provided as described above forms a first channel 431 defined as a space between adjacent channel ribs, and passes through the first channel 431 to allow fluid to flow in the axial direction.

In the present specification, the axial direction of the ion exchange membrane means the width direction W of the ion exchange membrane, and also means the same direction as the axial direction of the housing 100. In addition, the circumferential direction of an ion exchange membrane means the longitudinal direction L of an ion exchange membrane, and also means the same direction as the circumferential direction of a housing.

As described above, the ion exchange membrane according to another embodiment of the present invention has the effect of not using a spacer disposed between the ion exchange membranes by the plurality of formed first channels 431.

In addition, a plurality of gaskets 440 may be included between the plurality of ion exchange membranes 400.

The gasket 440 may be disposed between the plurality of ion exchange membranes so that the high concentration solution and the low concentration solution flowing through the first flow path 410 and the second flow path 420, respectively, do not flow out.

More specifically, as shown in FIG. 8C, the gasket 440 is along the circumferential direction L at either end of both

ends

401a and 401b along the axial direction W of the ion exchange membrane. Can be prepared.

For example, when the gasket 440 is provided at one end 401a of the anion exchange membrane A, the gasket 440 is provided at the other end 401b at the cation exchange membrane C stacked on the anion exchange membrane A. Can be prepared.

That is, when the anion exchange membrane (A) and the cation exchange membrane (C) are alternately stacked, the gasket 440 may be alternately provided at one end and the other end of each ion exchange membrane adjacent to each other.

Referring to FIG. 9, the ion exchange membrane 400 includes a first gasket 440a provided on the ion exchange membrane so that the fluid flowing through the first flow passage 410 does not flow out, and the second flow passage 420. And a second gasket 440b provided on the ion exchange membrane so that the fluid flowing through the ion exchange membrane does not flow out. When the plurality of ion exchange membranes are stacked, the first gasket 440a is provided at one end of the ion exchange membrane along the axial direction. The second gasket 440b may be disposed at the other end of the ion exchange membrane along the axial direction.

For example, when a cation exchange membrane (C), an anion exchange membrane (A), and a cation exchange membrane (C ') are sequentially stacked, a first gasket is disposed at one end of the cation exchange membrane (C), and the other anion exchange membrane (A) The second gasket may be disposed at the end portion, and the first gasket may be disposed at one end of the cation exchange membrane C ′ and stacked.

That is, the first gasket 440a and the second gasket 440b may be disposed in opposite directions to each other according to the stacking direction of the ion exchange membrane.

Here, the gasket 440 may be, for example, an adhesive, but is not limited thereto, and a gasket used in the related art may be used. The flow of fluid by the first channel 431 and the gasket 440 prepared as described above is as follows.

When fluid is supplied to the first and

second flow paths

410 and 420 partitioned by the ion exchange membrane 400, the fluid flows in the axial direction along the first channel formed in the ion exchange membrane, and a gasket provided in each ion exchange membrane. The flow is broken by 440 and then flows again along the first channel in the axial direction and is discharged from the ion exchange membrane.

Conventionally, in the same way as a reverse osmosis (RO) apparatus using a spirally wound reverse osmosis membrane, fresh water flows along the circumferential direction, that is, in the longitudinal direction L of the ion exchange membrane, and the housing 100. When the reverse electrodialysis apparatus is designed to allow seawater to flow in the axial direction, the flow distance of freshwater is much longer than that of seawater, and thus there is a problem in that the output is lowered because there are more areas with no concentration difference with seawater.

On the other hand, the present invention, as described above, by forming a flow guide portion, that is, the flow path member 450 or the first channel 431 on the ion exchange membrane to flow the fluid in the axial direction of the housing 100, sea water and fresh water That is, the flow distance is adjusted, that is, the flow distance is shortened, so that the difference in concentration occurs until the end, there is an effect that can optimize the performance of the device.

10 is a view illustrating a state where spacers are disposed on an ion exchange membrane 400 according to another embodiment of the present invention.

Referring to FIG. 10, when the reverse electrodialysis generator 10 of the present invention does not use an ion exchange membrane in which a first channel 431 is formed as described above, the reverse electrodialysis generator 10 is configured to guide the flow of a fluid between each ion exchange membrane. Spacer 800 may be disposed.

At this time, in order to flow the fluid in the housing axial direction as described above, the spacer 800 is also the same spacer channel as the first channel 431 formed by the plurality of channel ribs 430a formed in the ion exchange membrane. 431a may be formed.

11 illustrates an inner electrode 200 according to an embodiment of the present invention.

Referring to FIG. 11, the inner electrode 200 may include a first inflow port 240 through which an electrode solution is introduced, and a first discharge port 270 provided to flow in an axial direction to move to an outer electrode. ).

More specifically, the inner electrode 200 is fluidly connected to the first inlet port 240, the first inlet (100) is provided so that the fluid flowing through the first inlet port 240 flows to the outer peripheral surface of the inner electrode ( 250 and a first outlet 260 fluidly connected to the first outlet port 270 such that the fluid axially flowing from the outer circumferential surface of the inner electrode flows to the first outlet port 270.

The inner electrode 200 may have a cylindrical shape and may be formed in a hollow shape, but both ends along the axial direction, that is, one end portion 201a and the other end portion 201b may be formed in a blocked structure.

More specifically, the first inflow port 240 may be formed at one side of the lower end portion 201b of the inner electrode 200 so that the fluid is supplied into the inner electrode.

That is, at least a portion of the inner electrode may have an inner flow path (not shown) capable of fluid movement. For example, the inner flow path (not shown) may be the entire inside of the inner electrode in which the inside of the inner electrode is hollow, but is not limited thereto.

In addition, the outer circumferential surface of the inner electrode 200 may include a plurality of second channels 210 and second channels 210 for guiding the flow of the introduced fluid to flow along the circumferential direction of the electrode 200. Guide the flows along the circumferential direction of the electrode 200 to the plurality of third channels 220 and the fluids flowed along the third channel 220 to guide the flow so that the flowed fluid flows along the axial direction of the electrode A plurality of fourth channels 230 to be included.

The second to

fourth channels

210, 220, and 230 may be formed to protrude outwards on the outer circumferential surface of the inner electrode 200.

More specifically, the second channel 210 may be provided at the other end side 201b of the inner electrode 200, and the fourth channel 230 may be provided at one end side 201a of the inner electrode 200, respectively. Can be.

Here, the other end side of the inner electrode 200 may be the lower end side of the inner electrode, one end side may be the upper end side.

In addition, the third channel 220 may be disposed between the second channel 210 and the fourth channel 230.

Here, the plurality of third channels 220 are provided to extend along the axial direction of the inner electrode 200 between the second channel 210 and the fourth channel 230, and are spaced apart by a predetermined interval along the circumferential direction. Can be.

In addition, the second and

fourth channels

210 and 230 may include, for example, at least three channels 210a, 210b, 210c, 230a, 230b, and 230c along an axial direction, and may be spaced apart from each other. Each can be placed apart.

In addition, at least three channels formed along the axial direction may be provided in plural to be spaced apart from each other by a predetermined distance in the circumferential direction of the inner electrode.

In particular, the second channel 210, the third channel 220, and the fourth channel 230 may be disposed to be spaced apart from each other by the channels adjacent to each other in the axial direction.

In addition, each channel adjacent to each other along the circumferential direction may be disposed apart from each other by a predetermined distance.

For example, based on any one third channel 220a, the second channel 210 and the fourth channel 230 each including at least three channels on both end sides of the third channel 220a. This can be arranged.

Here, although the second channel 210 and the fourth channel 230 have been described by illustrating at least three channels, the present invention is not limited thereto and may include at least two.

In addition, the second and

fourth channels

210 and 230 may be formed to be shorter than the length of the third channel 220.

As described above, each of the second to

fourth channels

210, 220, and 230 is disposed to be spaced apart from each other with a channel adjacent to each other, so that the introduced fluid may move in a space between the channels.

In particular, the fluid introduced by the second and

fourth channels

210 and 230 may flow along the circumferential direction of the inner electrode 200.

In addition, the first inlet 250 may be provided in an area where the second channel 210 is provided, and the first outlet 260 may be provided in an area where the fourth channel 230 is provided.

The first inlet port 240 and the first inlet 250 move the fluid so that the fluid flowing into the first inlet port 240 flows along the second channel 210 through the first inlet 250. Possibly connected.

That is, the inner passage may connect the first inlet port 240 and the first inlet 250 to be fluidly movable.

In addition, the fluid passing through the first inlet 250 flows in the circumferential direction of the inner electrode along the second channel 210, and at this time, some of the fluid flows along the third channel 220. Will flow in the axial direction.

That is, the fluid introduced by the second channel 210 can flow through the entire outer peripheral surface of the inner electrode.

The fluid flowing along the axial direction by the third channel 220 passes through the space between the fourth channels and flows along the fourth channel in the circumferential direction of the inner electrode, and passes through the first outlet 260 to allow the fluid to flow. It may be introduced into the inside and may be discharged to the outside of the inner electrode through the first discharge port 270.

That is, the first outlet 260 may be fluidly connected to the first outlet port 270, and the inner flow path (not shown) may fluidly connect the first outlet and the first outlet port.

Here, the first discharge port 270 may be formed at one side of one end 201a of the inner electrode, and the fluid introduced into the inner electrode may be discharged to the outside through the first discharge port 270.

In addition, the first inlet 250 and the first outlet 260 may be disposed to be opposite to each other.

That is, the first outlet 260 is located on one end 201a side corresponding to the position where the first inlet 250 is rotated by an angle of 180 degrees with respect to the central axis, that is, on the region where the fourth channel 230 is provided. Can be arranged.

When the fluid flows by the first inlet and the first outlet arranged as described above, the entire outer peripheral surface of the inner electrode can flow.

In addition, the inner electrode 200 may be formed with a plurality of insertion holes 290 into which the partition wall 640 to be described later is inserted, respectively, at one end 201a and the other end 201b.

More specifically, the plurality of insertion holes 290 are spaced apart by a predetermined interval along the circumferential direction of one end portion 201a and the other end portion 201b of the inner electrode, and the partition wall 640 of the fluid distribution member to be described later. Can be arranged correspondingly.

In addition, the inner electrode 200 may include coupling members 291 formed to protrude outwardly from one end 201a and the other end 201b.

The coupling member 291 may be formed in a cylindrical shape along the circumferential regions of the first inlet port 240 and the first outlet port 270, and the first through hole 610 of the fluid distribution member 600 to be described later. It may be provided to correspond to the first through-hole 610 to be inserted into the coupling.

That is, the fluid distribution member 600 to be described later may be combined with the coupling member 291 and the plurality of insertion holes 290 of the inner electrode to seal the ion exchange membrane 400 wound around the inner electrode.

Here, the inner electrode 200 may be formed of a conductive material as a whole, for example, a material of platinum (Pt) coating on titanium (Ti), or only a partial region where channels are formed. It is made of platinum (Pt) coating on Ti), and the remaining regions except for some regions may be formed of a non-conductive material, but is not limited thereto.

In this case, the conductive material may be generally applied to any electrode that can be used in the reverse electrodialysis apparatus.

In addition, the fluid flowing into the inner electrode 200 may be an electrode solution.

12 is a diagram illustrating an inner electrode 200 according to another exemplary embodiment of the present invention.

Referring to FIG. 12, instead of a plurality of channels, a portion of a channel (hereinafter, referred to as an 'inner electrode portion') in which the channels of the inner electrode 200 are formed may be formed of, for example, a mesh type electrode.

More specifically, when the inner electrode part 202 is provided as a mesh type electrode, the fluid introduced through the first inlet port 240 flows to the first inlet port 250 and then the inner electrode part (by the electrode structure). After flowing 202, it may be discharged through the first outlet 260.

As described above, instead of forming a channel for guiding the flow of the fluid on the inner electrode 200, an electrode of a type corresponding to the channel may be provided to enable the fluid to move in the axial direction.

In addition, the first inlet port 240 may include an electrode fluid supply unit (not shown) provided to supply fluid into the inner electrode, and the fluid may be transferred from the electrode fluid supply unit to the first inlet port 240. It may include a first connecting member 901 for supplying.

Here, the first connection member 901 may be a transport pipe capable of supplying a fluid, and any type may be applicable as long as it can supply fluid.

In addition, the inner electrode 200 has both end sides along the axial direction W of the ion exchange membrane 400 such that the plurality of ion exchange membranes 400 described above are wound along the outer circumferential direction of the inner electrode 200. It includes a junction 280 to be bonded.

The junction part 280 is a region between one end portion 201a of the inner electrode 200 and the fourth channel 230 and the other end portion 201b and the second channel 210 to wind up the plurality of ion exchange membranes 400. It can mean the area between.

That is, it may mean a region between one end portion 201a and inner electrode portion 202 of the inner electrode 200 and a region between the other end portion 201b and the inner electrode portion 202.

More specifically, the first and

second flow paths

410 and 420 of the present invention are bonded to each other along the axial direction of the plurality of ion exchange membranes 400 on the junction portion 280 by a predetermined length, and then inside It can be formed by winding an ion exchange membrane along the circumferential direction of the electrode.

Here, the ion exchange membrane 400 may be wound a plurality of times along the circumferential direction of the inner electrode.

In addition, as described above, when the first channel is not formed on the ion exchange membrane, a plurality of spacers for guiding the flow of the fluid may be further wound together.

Referring to FIG. 13, the ion exchange membrane 400 wound in the circumferential direction of the inner electrode 200 partitions the first flow passage 410 and the second flow passage 420, respectively.

As described above, the ion exchange membrane 400 wound around the inner electrode 200 is a pair of seals respectively coupled to at least some regions on both end sides along the axial direction of the ion exchange membrane so that fluid does not flow into the outer electrode 300. It may include a gasket 500.

The pair of sealing gaskets 500 may simultaneously serve to fix and seal the wound ion exchange membrane 400.

Referring to FIG. 14, a pair of sealing gaskets 500 may be formed on at least some regions of the ion exchange membrane at both ends along the axial direction of the ion exchange membrane, that is, at one end side and the other end side of the ion exchange membrane wound on the inner electrode. And can be combined.

When the fluid distribution member 600 is coupled to both ends of the wound ion exchange membrane 200, the pair of sealing gaskets 500 may have a minute gap between the fluid distribution member 600 and the ion exchange membrane 200. It may occur, there is an effect that can prevent the flow of fluid to the outer electrode side by a minute gap.

In addition, when fluid flows between the plurality of ion exchange membranes, swelling occurs in the ion exchange membrane, so that the sealing gasket 500 is coupled to both ends of the ion exchange membrane as described above, thereby preventing the same. .

15 is a view showing a housing 100 according to an embodiment of the present invention.

Referring to FIG. 15, the housing 100 is formed in a cylindrical shape having a hollow, and has a predetermined thickness T1, one end 101a, and the other end 101b.

More specifically, the housing 100 may include a second inlet hole 110 through which the electrode solution flowing out of the first discharge port 270 flows, and an inner circumferential surface of the housing so that the introduced electrode solution flows toward the outer electrode 300. 103) The second inlet port 120 provided on the other end side, the electrode solution passed through the second outlet 130 and the second outlet provided on one end side so that the electrode solution flows out along the axial direction to the outside And a second discharge hole 140 provided to be discharged.

The second inflow hole 110 and the second discharge hole 140 may be formed at one end 101a of the housing, respectively.

More specifically, the second inlet hole 110 is provided to penetrate through the axial direction between the outer circumferential surface 102 and the inner circumferential surface 130 of the housing so as to be fluidly connected to the second inlet 120. Can be.

In addition, the second discharge hole 140 may be provided to pass through the axial direction between the outer circumferential surface 102 and the inner circumferential surface 103 of the housing so as to be fluidly connected to the second outlet 130.

Here, the second inlet hole 110 and the second outlet hole 140 may be provided in opposite directions to each other, so that the second inlet 120 and the second outlet 130 also in the housing inner peripheral surface 103 It may be arranged in opposite directions to each other.

By arranging as described above, the introduced fluid flows from the other end portion 101b side to the one end portion 101a side and passes through the entire area of the outer electrode 300 to be described later.

In addition, as described above, by sharing the electrode solution flowing into the inner electrode 200 and the outer electrode 300 as described above, it is not necessary to supply each electrode solution separately, the device can be made more compact .

On the other hand, the outer electrode 300 according to an embodiment of the present invention may be formed in a cylindrical shape having a hollow to surround the ion exchange membrane 400 wound on the above-described inner electrode.

More specifically, the outer electrode 300 may be disposed at an edge in the housing 100 to be spaced apart from the housing 100 by a predetermined distance.

The outer electrode 300 is disposed to be spaced apart from the ion exchange membrane 400 to have a predetermined space S so that the electrode solution can flow, and the electrode solution introduced through the second inlet 120 is the outer electrode 300. It may be provided to flow between the outer electrode and the ion exchange membrane 400 through.

More specifically, the outer electrode 300 may be spaced apart from the housing inner circumferential surface 103 by a predetermined distance so that the fluid introduced through the second inlet 120 of the housing 100 may flow.

That is, the outer electrode 300 is disposed to have a predetermined space with the ion exchange membrane 400 to allow fluid to flow, and the fluid introduced through the second inlet 120 passes through the outer electrode 300 to allow the outer electrode and ions to flow. It may be provided to flow between the exchange membranes.

Here, the outer electrode 300 may have a mesh type structure, but is not limited thereto, and any outer structure may be used as long as the fluid may pass therethrough.

16 and 17 illustrate a fluid distribution member 600 in accordance with one embodiment of the present invention.

16 and 17, the reverse electrodialysis power generator 10 according to an embodiment of the present invention is coupled to both

end portions

401a and 401b of the plurality of wound ion exchange membranes 400, respectively, and is connected to the first portion. And a pair of fluid distribution members 600 for supplying and discharging high and low concentration solutions, respectively, into the flow path 410 and the second flow path 420.

The fluid bonsai member 600 has a first surface 601a and a second surface 601b opposite the ion exchange membrane in a direction opposite to the first surface, and has a first surface 601a and a second surface 601b. The first through hole 610 is formed through the central portion.

In particular, the inner circumferential surface of the first through hole 610 may be coupled to the outer circumferential surface of the coupling member 291 of the inner electrode, and the outer circumferential surface of the fluid distribution member 600 may be coupled to be in contact with the inner circumferential surface 103 of the housing 100. have.

Here, referring to FIG. 16C, the length h1 of the outer circumferential portion 602 is longer than the length h2 of the first through hole 610 based on the longitudinal section of the fluid distribution member 600. Can be formed.

In addition, the rapeseed distribution member 600 includes a plurality of first fluid supply holes 620 and respective first fluid supply holes 620 that are spaced apart at predetermined intervals along a circumferential region of the first through hole 610. The first fluid is provided between the first fluid supply hole 620 and the first fluid discharge hole 630, respectively, in the plurality of first fluid discharge holes 630 and the second surface 601 b which are arranged between the first fluid discharge holes 630 and the second surface 601 b. It includes a plurality of partitions 640 for separating the flow of the fluid passing through the supply hole 620 and the first fluid discharge hole 630.

More specifically, some regions along the axial direction of both ends of the ion exchange membrane 400 wound around the inner electrode 200, that is, the one end portion 401a side and the other end portion 401b side of the ion exchange membrane 400 are formed. The insert-fit coupled to the fluid distribution member 600 fixes and supports the plurality of ion exchange membranes, and seals the ion exchange membranes.

In particular, one end portion 401a and the other end portion 401 of the wound ion exchange membrane are respectively coupled to abutment with the partition wall 640 formed on the second surface 601b of the fluid distribution member, and the fluid introduced from the fluid supply member to be described later. May flow into the ion exchange membrane, or may flow out after passing through the ion exchange membrane.

That is, by forming the length h1 of the outer circumferential portion 602 of the fluid distribution member 600 to be longer than the length h2 of the first through hole 610, it may be coupled to surround a portion of the ion exchange membrane. Will be.

Referring to FIG. 5, the outer electrode 300 is disposed between the end portions 602a and 602b of each of the outer circumference portions 602 of the pair of fluid distribution members 600 with respect to the axial direction. Can be.

In particular, the outer circumferential portion 602 is formed to have a predetermined thickness T2 so that the outer space 300 may be disposed between the inner circumferential surface 103 of the housing 100 and the ion exchange membrane 200. This can be provided.

Accordingly, the outer electrode 300 may be spaced apart from the inner circumferential surface 103 of the housing 100 by a predetermined space, and spaced apart from the ion exchange membrane 400 on the outer electrode side.

In addition, a plurality of sealing grooves 605 formed along the circumferential direction may be provided on the outer circumferential surface of the fluid distribution member 600, that is, the outer circumferential portion 602.

In addition, a plurality of sealing grooves 605 ′ formed along the circumferential direction may also be provided on the inner circumferential surface of the first through hole 610 of the fluid distribution member 600.

The sealing grooves 605 and 605 'may be provided so that rubber rings (not shown) may be inserted to prevent leakage of fluid.

18 and 19 are views illustrating a fluid supply member 700 according to an embodiment of the present invention, and FIG. 20 is a coupling diagram in which the fluid supply member 600 and the fluid distribution member 700 are coupled.

18 to 20, the reverse electrodialysis generator 10 according to an embodiment of the present invention is coupled to both

end portions

101a and 101b of the housing, respectively, so that each of the first fluid supply holes 620 is provided. And a pair of fluid supply members 700 for supplying fluid to the furnace and for discharging fluid discharged from the first fluid discharge hole 630.

2 to 5, the fluid supply member 700 may fluidly move with the first discharge port 270 so that the electrode solution introduced into the inner electrode 200 is transferred to the outer electrode 300. It may include a second inlet port 780 connected, the second inlet port 780 is connected to the second inlet hole 110 so as to be fluidly movable, the first outlet port 270 and the second inlet And a second connecting member 902 for fluidly connecting the port 780.

That is, in the fluid supply member 700 coupled to the one end 101a of the housing 100, the fluid discharged from the first discharge port 270 passes through the second inlet port 780 to allow the second fluid in the housing. It may be introduced into the inlet hole (110).

Accordingly, the second inflow port 780 may be positioned to correspond to each other to allow fluid movement with the second inflow hole (110).

In addition, the second discharge port 790 may be positioned to correspond to each other so that the second discharge hole 140 and the fluid movement.

The fluid supply member 700 may include a second connection member 902 connecting the first discharge port 270 and the second inflow port 780 so that the electrode solution introduced into the inner electrode is transferred to the outer electrode. Include.

That is, the first discharge port 270 and the second inlet port 780 may be connected to the fluid movement by the second connecting member 902.

In addition, the second discharge port 790 may include a third connection member 903 connected to the second discharge port 790 such that the electrode solution discharged from the housing is discharged to the outside through the fluid supply member.

The second and

third connection members

902 and 903 may be transport pipes capable of supplying a fluid, and any type of the second and

third connection members

902 and 903 may be applicable.

The pair of fluid supply members 700 have a first surface 701a and a second surface 701b facing the ion exchange membrane in a direction opposite to the first surface, and correspond to the first through hole 610. It includes a second through hole 710 penetrating the first surface and the second surface in the position.

More specifically, the pair of fluid supply members 700 are positioned to correspond to one of the plurality of first fluid supply holes 620 and are formed through the first surface 701a and the second surface 701b. The second fluid supply hole 720 is included.

In addition, the fluid supply passage 730 is connected to the fluid movement along the circumferential direction of the second through hole 710 of the second surface 701b to supply fluid to the plurality of first fluid supply holes 620. do.

In addition, a second fluid discharge hole 740 and a plurality of first fluids which are disposed to correspond to one of the plurality of first fluid discharge holes 630 and penetrate the first surface 701a and the second surface 701b. It includes a fluid discharge flow path 750 connected to the fluid movement along the circumferential direction of the fluid supply flow path 730 to discharge the fluid flowing out of the fluid discharge hole 630.

More specifically, the fluid supply flow path 730 is a circumferential direction of the second through hole 710 based on the second through hole 710 to correspond to the plurality of first fluid supply holes 620 formed alternately. Accordingly, a plurality of convex portions 731 may be formed to have a substantially wavy pattern.

That is, the plurality of convex portions 731 may be formed to correspond to the plurality of first fluid supply holes 620.

In addition, the fluid discharge flow path 750 is substantially waved along the circumferential direction of the fluid supply flow path 730 based on the second through hole 710 corresponding to the plurality of first fluid discharge holes 630 alternately formed. A plurality of recesses 732 may be formed to have a shape pattern.

That is, the plurality of recesses 732 may be formed to correspond to the plurality of first fluid discharge holes 630.

In addition, the fluid supply member 700 may be provided with a flow path partition wall 760 for partitioning the fluid supply flow path 730 and the fluid discharge flow path 750.

The flow path partition wall 760 may be provided to have a substantially wavy pattern so as to partition between the convex portion 731 and the concave portion 732 formed alternately.

In addition, the second fluid supply hole 720 may be provided in any one of the plurality of convex portions 731 of the fluid supply flow path 730, and the second fluid discharge hole 740 may be the fluid discharge flow path 750. It may be provided in any one of the plurality of recesses (732).

In addition, one of the low concentration solution or the high concentration solution is introduced into one of the pair of fluid supply members 700, and the other one of the low concentration solution or the high concentration solution is introduced to the other one of the pair of fluid supply members. Can be.

For example, when a low concentration solution flows into the fluid supply member 700 coupled with one end 101a of the housing 100, a high concentration solution flows into the fluid supply member 700 coupled with the other end 101b of the housing 100. .

On the contrary, when a high concentration solution flows into the fluid supply member 700 coupled to one end 101a of the housing 100, a low concentration solution flows into the fluid supply member 700 coupled with the other end 101b of the housing 100.

As described above, the reverse electrodialysis power generation apparatus 10 of the present invention has the above-described configuration in which the high concentration solution and the low concentration solution flow along the axial direction on the ion exchange membrane wound on the inner electrode, thereby reducing the flow distance between seawater and fresh water. It is possible to optimize the performance of the device by allowing adjustment and concentration differences to occur to the end.

In general, the longer the flow length of the fluid, the lower the difference in concentration between the high concentration solution and the low concentration solution is lowered the potential difference at the end of the flow path of the fluid can lower the overall electrical production efficiency, but the flow length of the fluid shorter Therefore, there is an effect that can produce electricity with higher efficiency.

Meanwhile, in order to produce electricity as described above, the inner electrode 200 and the outer electrode 300 of the present invention include first and

second electrode rods

801 and 802 for collecting electricity, respectively. The first electrode 801 may be provided to protrude to the outside through the first and second through

holes

610 and 710.

In addition, each of the fluid distribution member and the fluid supply member may include a through hole (not shown) through which the second electrode 802 passes.

In addition, the first electrode 801 may be connected to the inner electrode, the second electrode 802 may be connected to the outer electrode, and the first and

second electrode

801 and 802 may be electrically connected to generate electricity.

Referring to FIG. 5, inside the housing of the present invention, an inner electrode 200, a plurality of ion exchange membranes 400 wound around the inner electrode, an ion exchange membrane, and a fluid distribution member are provided to seal the center portion of the housing. A pair of sealing gaskets 500 and a pair of fluid distribution members 600 for supplying a fluid by sealing the wound ion exchange membrane may be coupled in turn.

In addition, the fluid supply member may be coupled to both ends of the housing to complete the coupling of the device 10.

21 is a view showing the fluid flow of the reverse electrodialysis apparatus 10 according to an embodiment of the present invention, Figure 22 is a view showing the fluid flow of the reverse electrodialysis apparatus 10 according to another embodiment of the present invention Drawing.

More specifically, FIG. 21 is a reverse electrodialysis apparatus 10 having an ion exchange membrane 400 including a plurality of flow path members 450, and FIG. 22 is an ion exchange membrane including a plurality of first channels 430. A reverse electrodialysis apparatus 10 equipped with 400 is shown.

Referring to Figures 21 and 22 will be described the flow of the fluid of the present invention. Here, an example will be described in which a low concentration solution is supplied to the fluid supply member 700 provided at one end of the housing, and a high concentration solution is supplied to the fluid supply member 700 provided at the other end of the housing.

Referring to the flow of the low concentration solution and the high concentration solution, the low concentration solution is supplied to the second fluid supply hole 720 provided at one end of the housing, the high concentration solution to the second fluid supply hole 720 provided at the other end of the housing To supply.

The fluid supplied to the second fluid supply hole 720 flows along the circumferential direction of the second through hole 710 while flowing through the fluid supply flow path 730, respectively.

As described above, the fluid flowing in the fluid supply passage 730 passes through each of the first fluid supply holes 620 connected thereto and flows into the first and second passages partitioned by the ion exchange membrane, respectively.

First, referring to FIG. 21, the flow of the fluid in the reverse electrodialysis apparatus 10 having the ion exchange membrane 400 including the plurality of flow path members 450 includes the flow of the fluid introduced into the first and second flow paths. Each flows in the axial direction by the spacer of the ion exchange membrane and is then discharged from the ion exchange membrane.

Here, the fluid flowing through the first and second flow paths may be respectively flowed in a substantially diagonal direction in a direction having a predetermined angle with respect to the central axis by the spacer.

The low concentration solution introduced at one end flows into the second flow path and then is discharged through each of the first fluid discharge holes 630 provided at the other end, and flows through the fluid discharge flow path 750 and the second fluid discharge hole 740. Can be discharged to the outside of the housing.

At this time, the high concentration solution introduced from the other end is introduced into the first flow path and then discharged through each of the first fluid discharge holes 630 provided at one end, and flows through the fluid discharge flow path 750 and discharges the second fluid. It may be discharged to the outside of the housing through the hole 740.

In this process, ionic materials (cationic materials and anionic materials) contained in the high concentration solution selectively pass through the ion exchange membrane due to the difference in concentration between the low concentration solution and the high concentration solution flowing through the first and second flow paths. To generate electricity.

Referring to FIG. 22, the flow of fluid in the reverse electrodialysis apparatus 10 having the ion exchange membrane 400 including the plurality of first channels 430 may include ions in the first and second flow paths. It flows in the axial direction along the first channel formed in the exchange membrane, and the flow is broken by the gasket provided in each ion exchange membrane, and then flows again in the axial direction along the first channel and discharged from the ion exchange membrane.

That is, the low concentration solution introduced into one end may flow along the first channel and be discharged to one end again, and the high concentration solution introduced into the other end may be discharged back to the other end along the first channel.

As described above, the fluid discharged from the ion exchange membrane flows through the first fluid discharge hole, and the flowed fluid flows along the fluid discharge flow path to be discharged to the outside through the second fluid discharge hole.

In the present specification, the low concentration solution may include, but is not limited to, fresh water, brackish water, and the like. It may include, but is not limited to.

As described above, in order to generate electricity by using the concentration difference between the low concentration solution and the high concentration solution, the fluid must also flow to the inner and outer electrodes while the low and high concentration solutions are flowing.

Fluid flowing through the inner electrode and the outer electrode, for example, an electrode solution, is introduced into the inner electrode through the first connecting member and the first inlet port.

The electrode solution introduced into the inner electrode is discharged to the first inlet, moves to the inner circumferential surface of the inner electrode, flows along the second inner fourth channel, and is discharged to the outside of the inner electrode through the first outlet and the first outlet port. .

Thereafter, the electrode solution is transferred to the second inlet port by the second member connected to the first outlet port, passed through the second inlet hole connected to the second inlet port, and discharged to the second inlet port to flow into the housing.

The electrode solution flowed into the housing flows through the outer electrode and is discharged through the second outlet to the second discharge hole connected thereto.

The flow of the electrode solution is discharged to the outside by the third connection member through the second discharge port connected to the second discharge hole.

In the present specification, the fluid flowing into the inner electrode and the outer electrode may be an electrode solution, and the electrode solution may include, for example, fresh water, seawater, potassium ferricyanide, and iron chloride. Generally, the present invention is not limited thereto, and any electrode solution usable in the reverse electrodialysis apparatus may be applied.

Meanwhile, as described above, the low concentration and high concentration solution flows into the ion exchange membrane 400 into the reverse electrodialysis power generation apparatus 10 of the present invention, and when the power is produced, the scale is concentrated on the ion exchange membrane on the inlet side where the low concentration and high concentration solution flows. In this case, the fluid supply member and the fluid distribution member can be separated and repaired, thereby enabling more efficient device management.

In addition, the reverse electrodialysis apparatus 10 according to the present invention is manufactured by winding the inner electrode using only the cation exchange membrane and the anion exchange membrane, thereby making it easier to manufacture, easy to automate, easy to prevent leakage and maintenance.

The present invention also provides a reverse electrodialysis power generation system 20.

For example, the reverse electrodialysis power generation system relates to a system using the reverse electrodialysis power generation device 10 described above.

Therefore, the details described in the reverse electrodialysis power generation device to be described later may be equally applied.

Referring to FIGS. 23 and 24, the reverse electrodialysis power generation system 20 of the present invention includes a plurality of mounting spaces to accommodate the plurality of reverse electrodialysis power generation devices 10 and the reverse electrodialysis power generation device 10, respectively. A first and second fluid provided to supply the low concentration solution or the high concentration solution to each of the second fluid supply holes 720. Supply fluid to the first and second

fluid discharge pipes

1301 and 1302 and the first inflow port 240 provided to discharge the fluid discharged from the

supply pipes

1201 and 1202 and the second fluid discharge holes 740 to the outside. A plurality of third fluid supply pipes 1401 provided to support the third fluid discharge pipes 1402 provided to discharge the fluid discharged from the second discharge port 790 to the outside, and a plurality of reverse electrodialysis generators 10. And a support member 1500.

Here, the third fluid supply pipe 1401 may be the first connection member 901 described above, or the third fluid supply pipe 1401 may be fluidly connected to the first connection member 901. .

In addition, the third fluid discharge pipe 1402 may be the third connection member 903 described above, or the third fluid discharge pipe 1402 may be fluidly connected to the third connection member 903. .

In addition, the first and second

fluid supply pipes

1201 and 1202 and the first and second

fluid discharge pipes

1301 and 1302 correspond to the second fluid supply hole 720 and the second fluid discharge hole 740, respectively. The third fluid supply pipe 1401 and the third fluid discharge pipe 1402 are provided at positions corresponding to the first inflow port 240 and the second discharge port 790, respectively, The member 1500 may be provided to have a length H corresponding to the first fluid supply pipe 1201 and the first fluid discharge pipe 1301.

As described above, the plurality of support members 1500 have a length H corresponding to the first fluid supply pipe 1201 and the first fluid discharge pipe 1301, and thus, the reverse electrodialysis power generation device 10 of the present invention. ) Can be more easily and easily seated in the mounting space.

In addition, in a system composed of a plurality of reverse electrodialysis power generation apparatuses 10, maintenance of each reverse electrodialysis power generation apparatus 10 is easier.

In addition, the reverse electrodialysis power generation system 20 includes first and

second supply units

1701 and 1702 and a third supply unit configured to supply a low concentration solution or a high concentration solution to the first and second

fluid supply pipes

1201 and 1202, respectively. And a third supply part 1703 provided to supply fluid to the fluid supply pipe 1401.

Here, each of the supply unit may each include a pump for supplying a fluid.

25 and 26, the fluid supplied from the third supply unit 1703 passes through the reverse electrodialysis power generator 10 and then flows back into the third supply unit 1703 to be reused.

Here, each of the fluid supply pipes and the fluid discharge pipes may be supplied to the reverse electrodialysis power generator 10 or may be provided with a flow control valve 1600 to adjust the flow rate discharged from the reverse electrodialysis power generator 10.

The present invention also provides an ion exchange membrane production apparatus 30.

For example, the ion exchange membrane production apparatus relates to an apparatus for winding the plurality of ion exchange membranes described in the above-mentioned reverse electrodialysis power generation apparatus 10 on the inner electrode.

Therefore, the details described in the ion exchange membrane manufacturing apparatus 30 to be described later may be equally applicable to the contents described in the reverse electrodialysis power generator 10.

27 and 28 are schematic views showing an ion exchange membrane manufacturing apparatus according to an embodiment of the present invention, Figure 29 is a partially enlarged view for explaining a spacer according to an embodiment of the present invention.

Referring to FIGS. 27 to 29, the ion exchange membrane manufacturing apparatus 30 of the present invention includes a first roller 2001 on which an inner electrode 200, a first ion exchange membrane 400a is wound, and a first spacer 800a. ), The second roller 2002 wound around the third roller, the third roller 2003 wound around the second ion exchange membrane 400b, the fourth roller 2004 wound around the second spacer 800b, and the first to fourth rollers. The first ion exchange membrane 400a, the first spacer 800a, the second ion exchange membrane 400b, and the second spacer 800b, which are respectively wound in (2001,2002,2003,2004), are stacked in order to form the inner electrode 200. ), A fifth roller 2005 provided to be wound around.

Here, the first and second ion exchange membrane may refer to the plurality of ion exchange membrane 400 described above, and thus, the first ion exchange membrane may be one of a cation exchange membrane (C) or an anion exchange membrane (A), The second ion exchange membrane may be the other of the cation exchange membrane (C) or the anion exchange membrane (A).

That is, if the first ion exchange membrane is an anion exchange membrane (A), the second ion exchange membrane is a cation exchange membrane (C), and if the first ion exchange membrane is a cation exchange membrane (C), the second ion exchange membrane may be an anion exchange membrane (A). have.

In addition, the present invention may include a support structure 2100 for supporting the first to fifth rollers.

The support structure 2100 may be provided as a plurality of structures spaced apart from each other so as to roll each roller.

In the drawing, although the first to fourth rollers are arranged in a vertical line, each of the two rollers may be provided to be arranged on both sides with respect to the fifth roller.

In addition, the first and second spacers may be the

spacers

453 and 800 described above.

The first to

fourth rollers

2001, 2002, 2003, and 2004 may be provided to unwind respective ion exchange membranes and spacers toward the fifth roller 2005.

Here, each of the ion exchange membrane and the spacer may be wound along the circumferential direction of the inner electrode 200.

In addition, the second and

fourth rollers

2002 and 2004 have a first end 2000a and a second end 2000b opposite to the first end, and the first and

second spacers

800a and 800b are formed. In order to block the flow of the fluid and the flow path spacer 810 provided to partition the first and second flow paths (410, 420) between the first ion exchange membrane (400a) and the second ion exchange membrane (400b), respectively. The blocking spacer 820 is provided, and the first spacer 800a has a flow path spacer 810 disposed on the side of the first end 2000a and a blocking spacer 820 disposed on the side of the second end 2000b. Can be arranged.

In particular, the second spacer 800b may include a blocking spacer 820 disposed on the side of the first end 2000a and a flow path spacer 810 disposed on the side of the second end 2000b.

In addition, the fifth roller 2005 may include the first and second

ion exchange membranes

400a and 400b and the first and second spacers 800a, at a position where the first and

second spacers

800a and 800b are wound. An adhesive device (not shown) may be further provided to discharge the adhesive to the first and

second spacers

800a and 800b so that the 800b may be adhered to each other.

In addition, the first and

second spacers

800a and 800b each have a spacer channel 430a for guiding the movement of the fluid, and the spacer channels 430a of each of the flow path spacer and the blocking spacer are arranged to be orthogonal to each other. Can be.

As described above, each spacer includes a flow path spacer and a blocking spacer, and the blocking spacer serves as the aforementioned gasket.

Conventionally, when the gasket thickness and the spacer thickness are not the same when the gasket is used, there is a possibility that water leakage occurs in the gap, but, as in the present invention, when the gasket thickness and the ion exchange membrane are laminated with the spacer instead of the gasket, By the same, there is an effect that can prevent the leakage in advance.

In addition, by using the spacer having the channel formed as described above, by arranging the channels of the flow path spacer and the blocking spacer to be orthogonal to each other, the effect of preventing leakage can be increased.

Claims

A cylindrical housing having a hollow;

An inner electrode disposed in the central portion of the hollow in the housing;

An outer electrode disposed at an edge of the hollow in the housing; And

A plurality of ion exchange membranes disposed between the inner electrode and the outer electrode and wound along the circumferential direction of the inner electrode to partition one or more first flow paths through which the high concentration solution flows and one or more second flow paths through which the low concentration solution flows; Reverse electrodialysis generator comprising a.
The method of claim 1,

The plurality of ion exchange membrane, the reverse electrodialysis generator comprising a cation exchange membrane and an anion exchange membrane.
The method of claim 1,

Reverse electrodialysis power generation apparatus for producing electricity at the inner and outer electrodes by the concentration difference between the high concentration solution and the low concentration solution flowing through the first flow path and the second flow path, respectively.
The method of claim 1,

The plurality of ion exchange membranes include a flow path guide for guiding the flow of the fluid such that the fluid flowing in the first flow path and the second flow path flows along the axial direction of the housing; Reverse electrodialysis generator comprising a.
The method of claim 4, wherein

Euro guide part,

A plurality of flow path members for guiding the flow of the fluid on the ion exchange membrane,

A plurality of flow path members, reverse electrodialysis generators are provided so as to be spaced apart from each other at a predetermined interval in the axial direction of the ion exchange membrane.
The method of claim 5,

The flow path member includes a plurality of first flow path members disposed on the one end side of the ion exchange membrane at predetermined intervals along the circumferential direction, and a plurality of second flow path members disposed on the other end side at a predetermined interval along the circumferential direction,

The second flow path member is disposed so as to be positioned between two adjacent first flow path members along the circumferential direction.
The method of claim 4, wherein

The flow path guide includes a plurality of channel ribs for guiding the flow of the fluid on the ion exchange membrane,

Each channel rib is provided to extend along the axial direction of the housing, the plurality of channel ribs are arranged spaced apart a predetermined interval along the circumferential direction of the housing.
The method of claim 1,

The inner electrode may include a first inlet port through which an electrode solution is introduced;

A first discharge port provided to flow the axial direction of the introduced electrode solution into the outer electrode; Reverse electrodialysis generator comprising a.
The method of claim 8,

The inner electrode may include: a first inlet port fluidly connected to the first inlet port and configured to allow fluid introduced through the first inlet port to flow to an outer circumferential surface of the inner electrode; And

A first outlet configured to fluidly move with the first outlet port such that the fluid flowing along the axial direction at the outer circumferential surface of the inner electrode flows to the first outlet port; Reverse electrodialysis generator having a.
The method of claim 9,

The outer circumferential surface of the inner electrode is

A plurality of second channels for guiding the introduced fluid to flow along the circumferential direction of the electrode;

A plurality of third channels for guiding fluid flowing along the second channel to flow along the axial direction of the electrode; And

A plurality of fourth channels for guiding fluid flowing along the third channel to flow along the circumferential direction of the electrode; Reverse electrodialysis generator further comprising a.
The method of claim 10,

The first inlet is provided in the region where the second channel is provided,

The first outlet is provided in the region provided with the fourth channel, the reverse electrodialysis generator.
The method of claim 8,

The housing is

A second inflow hole into which the electrode solution flowing out of the first discharge port is introduced;

A second inlet provided at the other end side of the inner circumferential surface of the housing such that the introduced electrode solution flows toward the outer electrode;

A second outlet provided at one end of the housing circumferential surface such that the electrode solution flows along the axial direction and is discharged; And

A second discharge hole provided to discharge the electrode solution passing through the second discharge port to the outside; Reverse electrodialysis generator comprising a.
The method of claim 12,

The outer electrode is disposed apart from the predetermined interval so as to have a predetermined space with the ion exchange membrane to allow the electrode solution to flow,

The reverse electrodialysis power generation device provided to allow the electrode solution introduced through the second inlet to flow between the outer electrode and the ion exchange membrane through the outer electrode.
The method of claim 12,

The housing has a predetermined thickness,

The second inflow hole is provided to penetrate a predetermined length along the axial direction between the outer circumferential surface and the inner circumferential surface of the housing so as to be in fluid communication with the second inlet,

The second discharge hole, the reverse electrodialysis generator is provided to penetrate by a predetermined length along the axial direction between the outer peripheral surface and the inner peripheral surface of the housing so as to be fluidly connected to the second outlet.
The method of claim 1,

A pair of sealing gaskets respectively coupled to at least some regions on both end sides of the ion exchange membrane wound to prevent fluid from flowing into the outer electrode side; Reverse electrodialysis generator comprising a.
The method of claim 7, wherein

A first gasket provided on the ion exchange membrane such that the fluid flowing through the first flow path does not flow out; Including,

A second gasket provided on the ion exchange membrane such that the fluid flowing through the second flow path does not flow out; Including,

When the plurality of ion exchange membranes are stacked, the first gasket is disposed at one end of the ion exchange membrane in the axial direction, the second gasket is disposed at the other end of the ion exchange membrane in the axial direction.
The method of claim 1,

A pair of fluid distribution members coupled to both end portions of the plurality of wound ion exchange membranes, respectively, for supplying and discharging high and low concentration solutions to the first flow path and the second flow path, respectively;

The fluid distribution member has a first surface and a second surface facing the ion exchange membrane in a direction opposite to the first surface,

A first through hole formed through the central portion of the first and second surfaces; Reverse electrodialysis generator comprising a.
The method of claim 17,

Fluid distribution member,

A plurality of first fluid supply holes spaced apart at predetermined intervals along a circumferential region of the first through hole;

A plurality of first fluid outlet holes respectively arranged between each first fluid supply hole; And

A plurality of partition walls provided on the second surface, respectively, between the first fluid supply hole and the first fluid discharge hole to separate a flow of the fluid passing through the first fluid supply hole and the first fluid discharge hole; Reverse electrodialysis generator comprising a.
The method of claim 18,

A pair of fluid supply members coupled to both end portions of the housing, respectively, for supplying and discharging high and low concentration solutions to respective first fluid supply holes and first fluid discharge holes, respectively;

The pair of fluid supply members have a first surface and a second surface facing the ion exchange membrane in a direction opposite to the first surface,

A second through hole penetrating the first and second surfaces at a position corresponding to the first through hole; Reverse electrodialysis generator comprising a.
The method of claim 18,

The pair of fluid supply members may include: a second fluid supply hole positioned corresponding to one of the first fluid supply holes and formed through the first and second surfaces;

A fluid supply passage connected to fluidly move along a circumferential direction of the second through hole of the second surface to supply fluid to the plurality of first fluid supply holes;

A second fluid discharge hole positioned corresponding to one of the first fluid discharge holes and formed through the first and second surfaces; And

A fluid discharge flow path connected to be fluidly movable along a circumferential direction of the fluid supply flow path for discharging fluid discharged from the plurality of first fluid discharge holes; Reverse electrodialysis generator comprising a.
The method of claim 1,

The inner electrode includes a first electrode rod for collecting electricity; Including,

The outer electrode includes a second electrode rod for collecting electricity; Including;

The first electrode and the second electrode is a reverse electrodialysis generator device electrically connected to each other.
The method of claim 20,

One of the fluid supply members is

A second inflow port fluidly connected to the first discharge port so that the electrode solution introduced into the inner electrode is transferred to the outer electrode,

The second inflow port is connected to the second inflow hole so that the fluid can move,

A second connecting member for fluidly connecting the first discharge port and the second inlet port; Reverse electrodialysis generator comprising a further.
The method of claim 21,

The reverse electrodialysis power generation device is provided such that one of a low concentration solution or a high concentration solution flows into one of the pair of fluid supply members, and the other of the low concentration solution and the high concentration solution flows into the other one of the pair of fluid supply members.
Reverse electrodialysis power generation apparatus according to claim 1; And

A power converter having a plurality of mounting spaces to accommodate each of the reverse electrodialysis generators; Including,

Each of the plurality of mounting spaces may include: first and second fluid supply pipes configured to supply a low concentration solution or a high concentration solution to each of the second fluid supply holes;

First and second fluid discharge pipes configured to discharge fluid discharged from each of the second fluid discharge holes to the outside;

A third fluid supply pipe provided to supply fluid to the first inflow port;

A third fluid discharge pipe provided to discharge the fluid discharged from the second discharge port to the outside; And

A plurality of support members provided to support the reverse electrodialysis generator; Reverse electrodialysis power generation system comprising a.
The method of claim 24,

The first and second fluid supply pipes and the first and second fluid discharge pipes are provided at positions corresponding to the second fluid supply hole and the second fluid discharge hole, respectively,

The third fluid supply pipe and the third fluid discharge pipe are respectively provided at positions corresponding to the first inflow port and the second discharge port,

The plurality of support members, the reverse electrodialysis power generation system provided to have a length corresponding to the first fluid supply pipe and the first fluid discharge pipe.
The method of claim 24,

Reverse electrodialysis power system,

First and second supply parts arranged to supply a low concentration solution or a high concentration solution to the first and second fluid supply pipes, respectively; And

A third supply part provided to supply fluid to the third fluid supply pipe; Reverse electrodialysis power generation system further comprising a.
An inner electrode;

A first roller on which the first ion exchange membrane is wound;

A second roller on which the first spacer is wound;

A third roller on which the second ion exchange membrane is wound;

A fourth roller on which the second spacer is wound; And

A fifth roller provided such that the first ion exchange membrane, the first spacer, the second ion exchange membrane, and the second spacer respectively wound on the first to fourth rollers are sequentially stacked and wound on the inner electrode; Ion exchange membrane production apparatus comprising a.
The method of claim 27,

The first to fourth rollers, the ion exchange membrane production apparatus provided to unwind the respective ion exchange membrane and the spacer toward the fifth roller.
The method of claim 27,

The second and fourth rollers have a first end and a second end opposite in the first end,

The first and second spacers may include flow path spacers provided to partition first and second flow paths through which fluid flows between the first ion exchange membrane and the second ion exchange membrane; And

A blocking spacer provided to block the outflow of the fluid; Including;

The ion spacer membrane manufacturing apparatus of which a flow path spacer is arrange | positioned at the 1st end side, and a blocking spacer is arrange | positioned at the 2nd end side, respectively, for a 1st spacer.
The method of claim 29,

In the second spacer, the blocking spacer is disposed on the first end side, and the flow path spacer is disposed on the second end side, respectively.
The method of claim 27,

The fifth roller further includes an adhesion device provided to discharge the adhesive to the first and second spacers such that the first and second ion exchange membranes and the first and second spacers are bonded to each other at a position where the first and second spacers are wound. Ion exchange membrane production apparatus comprising a.
The method of claim 29,

The first and second spacers each have a spacer channel for guiding the movement of the fluid,

The spacer channel of each of the flow path spacer and the blocking spacer is disposed orthogonal to each other.