Flow-electrode capacitive deionization device

Abstract

The present invention relates to a flow-electrode capacitive deionization device comprising: a plurality of flow-electrode cartridge units arranged in a first direction, through each of which an electrode fluid flows, and which allow ions to permeate through at least one of both sides in the first direction; raw water flow units respectively coupled, between each pair of adjacent flow-electrode cartridge units in the first direction, to the flow-electrode cartridge units positioned on both sides thereof in the first direction, through which raw water to be deionized flows, and which allows ions to permeate through both sides in the first direction; housings configured to seal, in the first direction, the flow-electrode cartridge units which are respectively arranged at the outermost ends on both sides in the first direction; and a positive power line and a negative power line alternately connected to the plurality of flow-electrode cartridge units in the first direction so that the plurality of flow-electrode cartridge units alternately form positive-electrode flow-electrode cartridge units and negative-electrode flow-electrode cartridge units in the first direction, wherein, when power is applied through the positive power line and the negative power line, negative ions in the raw water flowing through each of the raw water flow units move into the electrode fluid in the positive-electrode flow-electrode cartridge units, and positive ions in the raw water flowing through each of the raw water flow units move into the electrode fluid in the negative-electrode flow-electrode cartridge units.

Description

Flow electrode capacitive deionization device

[0001] The present invention relates to a flow electrode capacitive deionization device, and more particularly, to a flow electrode capacitive deionization device applied to water treatment using flow electrode capacitive deionization.

[0002] Recently, countries around the world have been making efforts to develop clean alternative energy sources to address air pollution and global warming issues. In particular, marine power generation utilizing electrolyte concentration differences has emerged as a new hot topic.

[0003] In addition, the development of large-capacity power storage technologies capable of storing electrical energy generated from various alternative energy sources is emerging as a key foundation for future green industries. Most of these future power storage technologies utilize Li-ion batteries or supercapacitors, which utilize the principles of ion absorption (charge) and desorption (discharge). Countries around the world are conducting extensive R&D efforts to improve the charge / discharge characteristics of materials and components, thereby achieving high efficiency, compactness, and increased capacity.

[0004] Meanwhile, in recent years, in the water treatment field, such as water purification or wastewater treatment to prepare for water pollution and water shortage, and seawater desalination, the development of a process that can treat water with only very low energy costs compared to the existing evaporation method or reverse osmosis (RO) method, namely the Capacitive Deionization (CDI) process, is underway, using the same principle.

[0005] The biggest problems in power storage and water treatment systems using this same principle are the decrease in efficiency and the high cost of the equipment when large-capacity is applied. In other words, the large-area electrode for scale-up, the resulting non-uniform distribution of the electric field within the electrode, the limited amount of active material in the thin-film electrode coated on the current collector, the decrease in the contact area between the active material and the electrolyte due to the binder during the coating process, and the decrease in charge / discharge efficiency require stacking of a large number of unit cells, which leads to the increase in the cost of the equipment, and especially in the case of the CDI (Capacitive Deionization) process, the increase in operating costs due to the pressure loss of the water (electrolyte) flow within the stack is pointed out as a problem.

[0006] Recently, a new CDI approach called flow-electrode capacitive deionization (FCDI) has been proposed. Examples include Korean Patent Nos. 10-1233295 and 10-1318331.

[0007] In the case of flow electrode capacitive deionization technology, a design such as increasing the electrode area is required to increase the capacity. Therefore, there is a need for the development of a flow electrode capacitive deionization technology that can increase the electrode capacity while reducing the installation space, maximize the contact area between the flow electrode and the influent, and simplify the structure.

[0008] Accordingly, the present invention has been devised to solve the above-mentioned problems, and the purpose of the present invention is to provide a flow electrode capacitive deionization device that can increase electrode capacity while reducing installation space, maximize the contact area between the flow electrode and raw water, and simplify the structure.

[0009] In addition, another purpose of the present invention is to provide a flow electrode capacitive deionization device that implements a modular structure in which raw water flows inside the device without a separate tank for flowing the raw water to be deionized, thereby facilitating installation, operation, and maintenance of the module.

[0010] In addition, another object of the present invention is to provide a flow electrode capacitive deionization device capable of more easily sealing and fixing an ion permeable membrane.

[0011] Another purpose is to provide a flow electrode capacitor deionization device that is easy to replace and maintain the positive or negative electrode unit and whose size is easy to adjust.

[0012] The above object is, according to the present invention, a flow electrode capacitive deionization device, comprising: a plurality of flow electrode cartridge units arranged in a first direction, each having an electrode fluid flowing inside thereof, and capable of transmitting ions in at least one direction among both sides in the first direction; a raw water flow unit, each coupled to the flow electrode cartridge units on both sides in the first direction between a pair of the flow electrode cartridge units adjacent to each other in the first direction, and having raw water to be deionized flowing inside thereof, and capable of transmitting ions in both sides in the first direction; a housing that seals the flow electrode cartridge units, each of which is arranged at the outermost ends of both sides in the first direction, in the first direction; and a positive power line and a negative power line alternately connected to the plurality of flow electrode cartridge units in the first direction so that the plurality of flow electrode cartridge units alternately form a positive flow electrode cartridge unit and a negative flow electrode cartridge unit in the first direction; This is achieved by a flow electrode capacitive deionization device characterized in that when power is applied through the positive power line and the negative power line, negative ions in the raw water flowing through each of the raw water flow units move to the electrode fluid in the cartridge unit for the positive flow electrode, and positive ions in the raw water flowing through each of the raw water flow units move to the electrode fluid in the cartridge unit for the negative flow electrode.

[0013] Here, the raw water flow unit may include a raw water frame in which raw water flow channels open to both sides of the first direction are formed, a pair of raw water-side ion permeable membranes each connected to the raw water frame on both sides of the first direction so that the raw water flow channels are blocked on both sides of the first direction, a raw water inlet pipe formed on the upper side of the raw water frame through which the raw water flows into the raw water flow channel, and a raw water discharge pipe formed on the lower side of the raw water frame through which the raw water in the raw water flow channel is discharged.

[0014] Additionally, a pair of the above-described ion-permeable membranes may have a property of permeating both negative and positive ions.

[0015] And, among the pair of raw water-side ion permeable membranes, the raw water-side ion permeable membrane facing the cartridge unit for the anode flow electrode may be applied with an anion permeable membrane that allows negative ions to pass through; and among the pair of raw water-side ion permeable membranes, the raw water-side ion permeable membrane facing the cartridge unit for the cathode flow electrode may be applied with a cation permeable membrane that allows positive ions to pass through.

[0016] In addition, the raw water frame may include a plurality of raw water distribution guide ribs positioned inside the raw water flow channel and causing the raw water introduced through the raw water inlet pipe to flow downward while being distributed laterally inside the raw water flow channel.

[0017] And, each of the flow electrode cartridge units includes a first case having a first ion passage area formed on a plate surface and open in the first direction, a second case having a first ion passage area formed on a plate surface and coupled to the first case so that a flow electrode channel for flowing the electrode fluid is formed therein, a first ion permeable membrane attached to the plate surface of the first case to block the first ion passage area and a second ion permeable membrane attached to the plate surface of the second case to block the second ion passage area, an electrode plate disposed inside the flow electrode channel and electrically connected to the positive power line or the negative power line, a pair of electrode fluid inlet pipes formed laterally spaced apart from each other on upper sides of the plate surfaces of the first case and the second case and penetrating the first case and the second case in the first direction, and a pair of electrode fluid discharge pipes formed laterally spaced apart from each other on lower sides of the plate surfaces of the first case and the second case and penetrating the first case and the second case in the first direction; Among the pair of electrode fluid inlet tubes of each of the flow electrode cartridge units, the electrode fluid inlet tubes at corresponding positions are mutually connected to each other in the first direction to form a first internal discharge tube and a second internal discharge tube, respectively; Among the pair of electrode fluid outlet tubes of each of the flow electrode cartridge units, the electrode fluid outlet tubes at corresponding positions are mutually connected to each other in the first direction to form a first internal discharge tube and a second internal discharge tube, respectively; An electrode fluid inlet hole is formed in an electrode fluid inlet tube forming the first internal inlet tube among the pair of electrode fluid inlet tubes of the positive flow electrode cartridge unit, and an electrode fluid inlet hole is formed in an electrode fluid inlet tube forming the second internal inlet tube among the pair of electrode fluid inlet tubes of the negative flow electrode cartridge unit;An electrode fluid discharge hole is formed in an electrode fluid discharge pipe forming the first internal discharge pipe among a pair of electrode fluid discharge pipes of the cartridge unit for the flow electrode of the positive electrode, and an electrode fluid discharge hole is formed in an electrode fluid discharge pipe forming the second internal discharge pipe among a pair of electrode fluid discharge pipes of the cartridge unit for the flow electrode of the negative electrode; the electrode fluid flowing in from the outside can flow through the first internal inlet pipe and the second internal inlet pipe, and can be discharged to the outside through the first internal discharge pipe and the second internal discharge pipe through the electrode fluid channel.;

[0018] And, on the upper side plate surface of the raw water frame, a pair of first electrode fluid connection pipes, which are respectively connected in the first direction with a pair of electrode fluid inlet pipes of the cartridge units for the flow electrodes on both sides in the first direction, are formed, so that the electrode fluid inlet pipe, the first electrode fluid connection pipe, and the electrode fluid inlet pipe, which are respectively connected in the first direction, form the first internal inlet pipe and the second internal inlet pipe, respectively; and on the lower side plate surface of the raw water frame, a pair of second electrode fluid connection pipes, which are respectively connected in the first direction with a pair of electrode fluid discharge pipes of the cartridge units for the flow electrodes on both sides in the first direction, so that the electrode fluid discharge pipe, the second electrode fluid connection pipe, and the electrode fluid discharge pipe, which are respectively connected in the first direction, form the first internal discharge pipe and the second internal discharge pipe, respectively; and the first electrode fluid connection pipe and the second electrode fluid connection pipe are not connected with the raw water flow channel.

[0019] And, a first raw water connection pipe is formed on the upper side plate surfaces of the first case and the second case at a position corresponding to the raw water inlet pipe and communicating with the raw water discharge pipe; a second raw water connection pipe is formed on the lower side plate surfaces of the first case and the second case at a position corresponding to the raw water discharge pipe and communicating with the raw water discharge pipe; the raw water inlet pipes and the first raw water connection pipes form a third internal inlet pipe through which the raw water flows in in a first direction; the raw water discharge pipes and the second raw water connection pipes form a third internal discharge pipe through which the raw water flows in in the first direction; the first raw water connection pipe is not communicated with the flow electrode channel, and the second raw water connection pipe is not communicated with the flow electrode channel.

[0020] And, the housing may include a first electrode fluid inlet connected to the first internal inlet pipe and supplying the electrode fluid from the outside to the first internal inlet pipe, a second electrode fluid inlet connected to the second internal inlet pipe and supplying the electrode fluid from the outside to the second internal inlet pipe, a first electrode fluid discharge connected to the first internal discharge pipe and discharging the electrode fluid flowing through the first internal discharge pipe to the outside, a second electrode fluid discharge connected to the second internal discharge pipe and discharging the electrode fluid flowing through the first internal discharge pipe to the outside, a raw water inlet connected to the third internal inlet pipe and supplying the raw water from the outside to the third internal inlet pipe, and a raw water discharge connected to the third internal discharge pipe and discharging the raw water flowing through the third internal discharge pipe to the outside.

[0021] And, when the raw water frame and the first case or the second case are combined, the raw water flow channel and the flow electrode channel can be combined to be sealed with the raw water frame and the outside of the first case or the second case.

[0022] According to the above configuration, according to the present invention, a flow electrode capacitor deionization device is provided, which implements a modular structure in which the raw water flows inside the device without a separate tank for flowing the raw water to be deionized by providing a flow space for the raw water to be deionized with a raw water flow unit, thereby facilitating installation, operation, and maintenance of the module.

[0023] In addition, the cartridge unit for the positive flow electrode and the cartridge unit for the negative flow electrode are each configured in the form of a cartridge-type module, thereby maximizing the contact area with the raw water, thereby improving process performance.

[0024] In addition, by producing it in the form of a large-area cartridge, it can contribute to large-area utilization while simultaneously achieving the effect of reducing installation space.

[0025] In addition, the cartridge unit for the positive flow electrode and the cartridge unit for the negative flow electrode are each modularized, making individual management easy, and providing an effect suitable for assembly, installation, and maintenance.

[0026] Figure 1 is a front perspective view of a flow electrode capacitor deionization device according to an embodiment of the present invention;

[0027] Figure 2 is a rear perspective view of a flow electrode capacitor deionization device according to an embodiment of the present invention;

[0028] Figure 3 is an exploded perspective view of a flow electrode capacitor deionization device according to an embodiment of the present invention.

[0029] Figure 4 is an exploded perspective view of a raw water flow unit according to an embodiment of the present invention.

[0030] Figure 5 is an exploded perspective view of a cartridge unit for a flow electrode according to an embodiment of the present invention.

[0031] Fig. 6 is a drawing showing a part of a cross-section along line Ⅶ-Ⅶ of Fig. 1,

[0032] Figure 7 is a cross-sectional view taken along line Ⅷ-Ⅷ of Figure 1,

[0033] Fig. 8 is a cross-sectional view taken along line Ⅸ-Ⅸ of Fig. 1.

[0034] The present invention relates to a flow electrode capacitive deionization device, comprising: a plurality of flow electrode cartridge units arranged in a first direction, each having an electrode fluid flowing therein, and capable of transmitting ions in at least one direction among both sides in the first direction; a raw water flow unit, each coupled to the flow electrode cartridge units on both sides in the first direction between a pair of the flow electrode cartridge units adjacent to each other in the first direction, and having raw water to be deionized flowing therein, and capable of transmitting ions in both sides in the first direction; a housing that seals the flow electrode cartridge units, each of which is arranged at the outermost ends on both sides in the first direction, in the first direction; and a positive power line and a negative power line alternately connected to the plurality of flow electrode cartridge units in the first direction so that the plurality of flow electrode cartridge units alternately form a positive flow electrode cartridge unit and a negative flow electrode cartridge unit in the first direction; When power is applied through the positive power line and the negative power line, negative ions in the raw water flowing through each of the raw water flow units move to the electrode fluid in the cartridge unit for the positive flow electrode, and positive ions in the raw water flowing through each of the raw water flow units move to the electrode fluid in the cartridge unit for the negative flow electrode.

[0035] The present invention can be modified in various ways and has many embodiments, and specific embodiments are illustrated in the drawings and described in detail.

[0036] However, this is not intended to limit the present invention to a specific embodiment, but should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

[0037] The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprise" or "have" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0038] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0039] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0040] FIG. 1 is a front perspective view of a flow electrode capacitive deionization device (10) according to an embodiment of the present invention, FIG. 2 is a rear perspective view of a flow electrode capacitive deionization device (10) according to an embodiment of the present invention, and FIG. 3 is an exploded perspective view of a flow electrode capacitive deionization device (10) according to an embodiment of the present invention.

[0041] Referring to FIGS. 1 to 3, a flow electrode capacitive deionization device (10) according to an embodiment of the present invention may be configured to include a plurality of flow electrode cartridge units (100, 100a), a plurality of raw water flow units (200), a housing (300), a positive power line (410), and a negative power line (420).

[0042] A plurality of cartridge units (100, 100a) for flow electrodes according to an embodiment of the present invention can be arranged in a form in which their plate surfaces face each other in the first direction (x). Each cartridge unit (100, 100a) for flow electrodes has a plate shape having a relatively thin rectangular parallelepiped shape in the first direction (x).

[0043] The raw water flow unit (200) according to an embodiment of the present invention can be arranged between a pair of flow electrode cartridge units (100, 100a) adjacent to each other in the first direction (x), and can be combined with the flow electrode cartridge units (100, 100a) arranged on both sides in the first direction (x).

[0044] Referring to FIG. 3, it has a structure in which a cartridge unit for a flow electrode (100, 100a), a raw water flow unit (200), a cartridge unit for a flow electrode (100, 100a), a raw water flow unit (200), and a cartridge unit for a flow electrode (100, 100a) are sequentially connected to each other in the first direction (x).

[0045] As illustrated in FIG. 3, in the embodiment of the present invention, four cartridge units (100, 100a) for flow electrodes constitute a flow electrode capacitive deionization device (10), and three raw water flow units (200) are mutually connected while being arranged between the four cartridge units (100, 100a) for flow electrodes. However, the number of raw water flow units (200) and cartridge units (100, 100a) for flow electrodes is not limited to this structure in which the raw water flow units (200) are arranged between the cartridge units (100, 100a) for flow electrodes.

[0046] A housing (300) according to an embodiment of the present invention can seal cartridge units (100, 100a) for flow electrodes, which are respectively arranged at the outermost sides in the first direction (x), in the first direction (x). In one embodiment, the housing (300) can be configured to include a first housing (311) and a second housing (312).

[0047] The first housing (311) is coupled to a cartridge unit for a flow electrode arranged at the outermost side on one side in the first direction (x) to seal the cartridge unit for a flow electrode (100, 100a). In addition, the second housing (312) is coupled to a cartridge unit for a flow electrode (100, 100a) arranged at the outermost side on the other side in the first direction (x) to seal the cartridge unit for a flow electrode (100, 100a). Here, the cartridge unit for a flow electrode (100, 100a) and the raw water flow unit (200) can be coupled to be sealed from the outside when they are mutually coupled in the first direction (x).

[0048] According to an embodiment of the present invention, electrode fluid flows inside a cartridge unit (100, 100a) for a flow electrode, and raw water to be deionized flows inside a raw water flow unit (200).

[0049] Here, the cartridge unit (100, 100a) for the flow electrode and the raw water flow unit (200) are mutually coupled so as to be sealed inside, and the first housing (311) and the second housing (312) seal the cartridge unit (100, 100a) for the flow electrode, which is disposed at the outermost side in the first direction (x), so that the electrode fluid and raw water flowing inside the cartridge unit (100, 100a) for the flow electrode and the raw water flow unit (200) do not leak out to the outside other than through the raw water inlet (341), the raw water discharge (342), the electrode fluid inlet, and the electrode fluid discharge, which will be described later.

[0050] Meanwhile, in the embodiment of the present invention, each cartridge unit (100, 100a) for the flow electrode is provided in a form that allows ions to pass through in at least one direction among both sides in the first direction (x). In the present invention, the cartridge unit (100, 100a) for the flow electrode is provided in a form that allows ions to pass through in both sides in the first direction (x). In addition, the raw water flow unit (200) according to the embodiment of the present invention is provided in a form that allows ions to pass through in both sides in the first direction (x).

[0051] According to an embodiment of the present invention, a positive power line (410) and a negative power line (420) are alternately electrically connected to a plurality of flow electrode cartridge units (100, 100a) in a first direction (x). Through this, the flow electrode cartridge unit (100, 100a) connected to the positive power line (410) operates as a positive flow electrode cartridge unit (100) since the electrode fluid flowing therein becomes positive, and the flow electrode cartridge unit (100, 100a) connected to the negative power line (420) operates as a negative flow electrode cartridge unit (100a) since the electrode fluid flowing therein becomes negative.

[0052] That is, the cartridge unit (100) for the positive flow electrode and the cartridge unit (100a) for the negative flow electrode are alternately arranged in the first direction (x), and the raw water flow unit (200) is arranged between the cartridge unit (100) for the positive flow electrode and the cartridge unit (100a) for the negative flow electrode.

[0053] According to the above configuration, when the electrode fluid is allowed to flow in each of the flow electrode cartridge units (100, 100a) and the raw water to be deionized is allowed to flow in the raw water flow unit (200), and power is applied to each of the flow electrode cartridge units (100, 100a) through the positive power line (410) and the negative power line (420), the electrode fluid flowing into each of the flow electrode cartridge units (100, 100a) forms a negative flow electrode and a positive flow electrode.

[0054] And, the negative ions in the raw water flowing inside the raw water flow unit (200) move to the cartridge unit (100) for the positive flow electrode, and the positive ions in the raw water move to the cartridge unit (100a) for the negative flow electrode, thereby enabling deionization of the raw water.

[0055] In one embodiment, the electrode fluid flowing inside the cartridge unit (100a) for the cathode flow electrode and the cartridge unit (100) for the anode flow electrode has supercapacitor slurry such as activated carbon distributed therein, and when power is applied, it becomes polarized, so that ions in the raw water flowing outside the cartridge unit (100, 100a) for the flow electrode, i.e., inside the raw water flow unit (200), are captured by the electrical properties. At this time, the ions that have moved inside the cartridge unit (100, 100a) for the flow electrode are adsorbed on the supercapacitor slurry and flow together with the electrode fluid.

[0056] As described above, the cartridge unit (100, 100a) for the flow electrode and the raw water flow unit (200) are modularized and combined with each other, thereby reducing the installation space. In addition, the raw water flow unit (200) is placed between the cartridge units (100, 100a) for the flow electrode to cause the raw water to flow, thereby implementing a modular structure in which the raw water flows without a separate tank for causing the raw water to flow, thereby providing the effect of making the installation, operation, and maintenance of the module easier.

[0057] Figure 4 is an exploded perspective view of a raw water flow unit (200) according to an embodiment of the present invention.

[0058] Referring to FIG. 4, a raw water flow unit (200) according to an embodiment of the present invention may be configured to include a raw water frame (210), a pair of raw water-side ion permeable membranes (220), a raw water inlet pipe (230), and a raw water discharge pipe (240).

[0059] The raw water frame (210) according to an embodiment of the present invention forms the entire skeleton of the raw water flow unit (200). The raw water frame (210) has a thin rectangular parallelepiped shape in the first direction (x) corresponding to the shape of the cartridge unit (100, 100a) for the flow electrode and the housing (300).

[0060] Here, the raw water frame (210) is formed with a raw water flow channel for raw water to flow inside. The raw water flow channel is formed by penetrating the plate surface of the raw water frame (210) in the first direction (x), and has a shape that is open on both sides in the first direction (x). In one embodiment, the raw water flow channel is formed by penetrating the plate surface of the raw water frame (210) in a rectangular shape.

[0061] A pair of raw water-side ion permeable membranes (220) can be respectively coupled to the raw water frame (210) on both sides in the first direction (x) so that the raw water flow channel is blocked on both sides in the first direction (x). Here, each raw water-side ion permeable membrane (220) has a characteristic of permeating ions.

[0062] Through this, a pair of raw water-side ion permeable membranes (220) block both sides of the raw water flow channel in the first direction (x), thereby blocking the raw water from passing through and allowing the raw water to flow through the raw water flow channel, and allowing the ions in the raw water to pass through and move toward both sides of the first direction (x), i.e., toward the cartridge units (100, 100a) for the flow electrodes on both sides.

[0063] In one embodiment, the raw water-side ion permeable membrane (220) may have a characteristic of permeating both negative ions and positive ions. Accordingly, positive ions in the raw water permeate and move through the raw water-side ion permeable membrane (220) facing the cartridge unit (100a) for the cathode flow electrode, and negative ions in the raw water permeate and move through the raw water-side ion permeable membrane (220) facing the cartridge unit (100) for the anode flow electrode.

[0064] In another embodiment, an anion-permeable membrane that allows negative ions to pass through may be applied to one of the pair of ion-permeable membranes (220) on the source side, and a cation-permeable membrane that allows positive ions to pass through may be applied to the other.

[0065] That is, among a pair of raw water-side ion permeable membranes (220), the raw water-side ion permeable membrane (220) facing the cartridge unit (100) for the anode flow electrode may be applied with an anion permeable membrane, and among a pair of raw water-side ion permeable membranes (220), the raw water-side ion permeable membrane (220) facing the cartridge unit (100a) for the cathode flow electrode may be applied with a cation permeable membrane.

[0066] Here, when a cation-permeable membrane and an anion-permeable membrane are applied to a pair of raw water-side ion-permeable membranes (220), the polarity of the raw water-side ion-permeable membranes (220) can be marked on both sides of the first direction (x) of the raw water frame (210), so as to determine the bonding direction when manufacturing the flow electrode capacitive deionization device (10).

[0067] Meanwhile, the raw water inlet pipe (230) may be formed on the upper side of the raw water frame (210). In one embodiment, the raw water inlet pipe (230) may be formed by penetrating the upper plate surface of the raw water frame (210) in the first direction (x). In FIG. 4, it is exemplified that the raw water inlet pipe (230) is formed in the central region in the lateral direction (y) on the upper side of the raw water frame (210).

[0068] Here, a raw water inlet hole (231, see Fig. 7) communicating with the raw water flow channel at the bottom may be formed to penetrate the raw water inlet pipe (230) in the vertical direction (z). Through this, raw water flowing in the first direction (x) through the raw water inlet pipe (230) flows into the raw water inlet channel through the raw water inlet hole (231), and a detailed description thereof will be provided later.

[0069] The raw water discharge pipe (240) according to an embodiment of the present invention may be formed on the lower side of the raw water frame (210). In one embodiment, the raw water discharge pipe (240) may be formed by penetrating the lower plate surface of the raw water frame (210) in the first direction (x). In FIG. 4, it is exemplified that the raw water discharge pipe (240) is formed in the central region in the lateral direction (y) on the lower side of the raw water frame (210).

[0070] Here, a raw water discharge hole (241, see FIG. 8) communicating with the upper raw water flow channel may be formed in the raw water discharge pipe (240) in the vertical direction (z). Through this, the raw water introduced into the raw water flow channel through the raw water inlet hole (231) flows downward along the raw water flow channel, and then is discharged outside the raw water flow channel through the raw water discharge hole (241), i.e., to the raw water discharge pipe (240), and flows in the first direction (x) along the raw water discharge pipe (240), which will be described in detail later.

[0071] Meanwhile, the raw water frame (210) according to an embodiment of the present invention may be configured to include a plurality of raw water distribution guard ribs (211). The plurality of raw water distribution guard ribs (211) are positioned inside the raw water flow channel, and disperse the raw water flowing in through the raw water inlet hole (231) of the raw water inlet pipe (230) in the lateral direction (y) inside the raw water flow channel.

[0072] In one embodiment, the raw water distribution guard rib (211) has a round shape that is convex in the upward direction, so as to disperse the raw water flowing downward in the lateral direction (y). Here, the shape of the raw water distribution guard rib (211) may have a different shape that can disperse the raw water in the lateral direction (y).

[0073] In the present invention, as an example, a raw water distribution guard rib (211) is supported on a plurality of raw water vertical brackets (212) extending in the vertical direction (z) within a raw water flow channel of a raw water frame (210).

[0074] Meanwhile, in the raw water frame (210) according to the embodiment of the present invention, a pair of first electrode fluid connecting tubes (251) are formed on the upper side, and a pair of first electrode fluid connecting tubes (251) are formed on the lower side, as an example, and a detailed description thereof will be provided later.

[0075] Meanwhile, the housing (300) according to the embodiment of the present invention may be configured to include a first electrode fluid inlet (321), a second electrode fluid inlet (322), a first electrode fluid discharge (331), a second electrode fluid discharge (332), a raw water inlet (341), and a raw water discharge (342).

[0076] In one embodiment, the first electrode fluid inlet (321), the second electrode fluid inlet (322), the first electrode fluid outlet (331), the second electrode fluid outlet (332), the raw water inlet (341), and the raw water outlet (342) may be formed in the first housing (311).

[0077] The first electrode fluid inlet (321) introduces electrode fluid from the outside into the flow electrode capacitive deionization device (10). Here, the first electrode fluid inlet (321) is connected to the first internal inlet pipe (181) described later so that the electrode fluid from the outside can be supplied to the first internal inlet pipe (181).

[0078] Likewise, the second electrode fluid inlet (322) introduces electrode fluid from the outside into the flow electrode capacitive deionization device (10). Here, the second electrode fluid inlet (322) is connected to the second internal inlet pipe (182) described later so that the electrode fluid from the outside can be supplied to the second internal inlet pipe (182).

[0079] Here, the first internal inlet pipe (181) supplies electrode fluid to the cartridge unit (100) for the positive flow electrode, and the second internal inlet pipe (182) supplies electrode fluid to the cartridge unit (100a) for the negative flow electrode, which will be described in detail later.

[0080] The first electrode fluid discharge unit (331) discharges the electrode fluid that flows through the cartridge unit (100) for the positive flow electrode by being introduced through the second electrode fluid inlet unit (322) to the outside. Here, the first electrode fluid discharge unit (331) is connected to the first internal discharge pipe (183) to be described later, and discharges the electrode fluid flowing through the first internal discharge pipe (183) to the outside, which will be described later.

[0081] And, the second electrode fluid discharge unit (332) discharges the electrode fluid that has flowed through the first electrode fluid inlet unit (321) and has flowed through the negative flow electrode cartridge unit (100a) to the outside. Here, the second electrode fluid discharge unit (332) is connected to the second internal discharge pipe (184) to be described later, and discharges the electrode fluid flowing through the second internal discharge pipe (184) to the outside, which will be described later.

[0082] The raw water inlet (341) according to an embodiment of the present invention supplies raw water from the outside to the raw water flow unit (200). Here, the raw water inlet (341) is connected to a third internal inlet pipe (185) to be described later, and supplies raw water from the outside to the raw water flow unit (200) by introducing the raw water through the third internal inlet pipe (185), which will be described later.

[0083] And, the raw water discharge unit (342) discharges the raw water flowing through the raw water flow unit (200) to the outside. Here, the raw water discharge unit (342) is connected to the third internal discharge pipe (186) described later, and discharges the raw water flowing through the third internal discharge pipe (186) to the outside after flowing through the raw water flow unit (200), which will be described later.

[0084] In an embodiment of the present invention, a first electrode fluid inlet (321), a second electrode fluid inlet (322), and a raw water inlet (341) are formed on the upper side of the first housing (311), and a first electrode fluid discharge (331), a second electrode fluid discharge (332), and a raw water discharge (342) are formed on the lower side of the first housing (311).

[0085] FIG. 5 is an exploded perspective view of a cartridge unit (100, 100a) for a flow electrode according to an embodiment of the present invention, FIG. 6 is a drawing showing a part of a cross-section taken along line Ⅶ-Ⅶ of FIG. 1, FIG. 7 is a cross-section taken along line Ⅷ-Ⅷ of FIG. 1, and FIG. 8 is a cross-section taken along line Ⅸ-Ⅸ of FIG. 1.

[0086] Hereinafter, a cartridge unit (100, 100a) for a flow electrode according to an embodiment of the present invention will be described in detail with reference to FIGS. 5 to 8.

[0087] A cartridge unit (100, 100a) for a flow electrode according to an embodiment of the present invention may be configured to include a first case (110), a second case (120), a first ion permeable membrane (130), a second ion permeable membrane (140), and an electrode plate (150).

[0088] The first case (110) and the second case (120) are mutually coupled in the first direction (x) and form a flow electrode channel therein. Here, electrode fluid flows into the flow electrode channel, and when power is applied to the electrode plate (150), the electrode fluid forms a flow electrode.

[0089] A first ion passage area (111) may be formed on the plate surface of the first case (110) according to an embodiment of the present invention. As an example, the first case (110) has a plate surface having an approximately rectangular shape, and the first ion passage area (111) has an approximately rectangular shape that penetrates the plate surface of the first case (110) in a first direction (x).

[0090] Likewise, a second ion passage area (121) may be formed on the plate surface of the second case (120). In one embodiment, the second case (120) corresponds to the formation of the first case (110), and the plate surface has an approximately rectangular shape, and the second ion passage area (121) has an approximately rectangular shape that penetrates the plate surface of the second case (120) in the first direction (x).

[0091] The first ion permeable membrane (130) according to an embodiment of the present invention is attached to the plate surface of the first case (110) to block the first ion permeable region (111). In addition, the second ion permeable membrane (140) is attached to the plate surface of the second case (120) to block the second ion permeable region (121).

[0092] As an example, the first ion permeable membrane (130) is attached to the first case (110) at the front of the first case (110), i.e., outside the flow electrode channel. And, the second ion permeable membrane (140) is attached to the second case (120) at the rear of the second case (120), i.e., outside the flow electrode channel.

[0093] An electrode plate (150) according to an embodiment of the present invention is placed inside a flow electrode channel. Here, a positive power line (410) or a negative power line (420) extends from the upper side of the electrode plate (150) to the outside of the first case (110) and the second case (120), so that it can be connected to an external power supply source (not shown).

[0094] When power is applied to the electrode plate (150) according to the above configuration, ions that have passed through the first ion permeable membrane (130) and the second ion permeable membrane (140) move into the first case (110) and the second case (120) through the first ion permeable region (111) and the second ion permeable region (121), and are adsorbed to the supercapacitor slurry in the electrode fluid, thereby enabling deionization of the raw water.

[0095] To be more specific, as described above, the cartridge unit (100) for the positive flow electrode and the cartridge unit (100a) for the negative flow electrode are arranged alternately spaced apart with the raw water flow unit (200) interposed therebetween.

[0096] Here, the electrode plate (150) of the cartridge unit (100) for the positive flow electrode is connected to the positive power line (410), and the cartridge unit (100a) for the negative flow electrode is connected to the negative power line (420).

[0097] Here, an anion exchange membrane may be applied as the first ion permeable membrane (130) and the second ion permeable membrane (140) of the cartridge unit (100) for the positive flow electrode. Therefore, when positive power is applied to the electrode plate (150) of the cartridge unit (100) for the positive flow electrode through the positive power line (410), negative ions in the raw water flowing in the raw water flow channel in the raw water flow unit (200) pass through the raw water-side ion permeable membrane and the anion permeable membrane of the raw water flow unit (200) and move into the inside of the flow electrode channel.

[0098] On the other hand, a cation exchange membrane may be applied as the first ion permeable membrane (130) and the second ion permeable membrane (140) of the cartridge unit (100a) for the cathode flow electrode. Therefore, when the negative power is applied to the electrode plate (150) of the cartridge unit (100a) for the cathode flow electrode through the negative power line (420), the positive ions in the raw water flowing in the raw water flow channel in the raw water flow unit (200) pass through the ion permeable membrane and the cation exchange membrane on the raw water side of the raw water flow unit (200) and move into the inside of the flow electrode channel.

[0099] Meanwhile, a cartridge unit (100, 100a) for a flow electrode according to an embodiment of the present invention may be configured to include a pair of electrode fluid inlet pipes (160) and a pair of electrode fluid discharge pipes (170).

[0100] A pair of electrode fluid inlet tubes (160) are spaced apart from each other in the lateral direction (y) on the upper side of the plate surface of the first case (110) and the second case (120). In addition, each electrode fluid inlet tube (160) is formed to penetrate the first case (110) and the second case (120) in the first direction (x). In one embodiment, a pair of first electrode fluid inlet tubes (160a) formed penetrating in a first direction (x) through an upper surface of a first case (110) are formed spaced apart in a lateral direction (y), and a pair of second electrode fluid inlet tubes (160b) formed penetrating in a first direction (x) through an upper surface of a second case (120) are formed spaced apart in a lateral direction (y), so that when the first case (110) and the second case (120) are mutually coupled, the first electrode fluid inlet tubes (160a) and the second electrode fluid inlet tubes (160b) at corresponding positions form an electrode fluid inlet tube (160).

[0101] A pair of electrode fluid discharge tubes (170) are spaced apart from each other in the lateral direction (y) on the lower side of the plate surface of the first case (110) and the second case (120). In addition, each electrode fluid discharge tube (170) is formed to penetrate the first case (110) and the second case (120) in the first direction (x). In one embodiment, a pair of first electrode fluid discharge pipes (170a) formed penetrating in a first direction (x) through a lower plate surface of a first case (110) are formed spaced apart in a lateral direction (y), and a pair of second electrode fluid discharge pipes (170b) formed penetrating in a first direction (x) through a lower plate surface of a second case (120) are formed spaced apart in a lateral direction (y), so that when the first case (110) and the second case (120) are mutually coupled, the first electrode fluid discharge pipes (170a) and the second electrode fluid discharge pipes (170b) at corresponding positions form an electrode fluid discharge pipe (170).

[0102] Here, when a plurality of flow electrode cartridge units (100, 100a) are connected in the first direction (x) with the raw water flow unit (200) interposed therebetween, the electrode fluid inlet pipes (160) at mutually corresponding positions among the pair of electrode fluid inlet pipes (160) form a first internal inlet pipe (181) and a second internal inlet pipe (182) in the first direction (x).

[0103] Likewise, when a plurality of cartridge units (100, 100a) for flow electrodes are connected in the first direction (x) with the raw water flow unit (200) interposed therebetween, electrode fluid discharge pipes (170) at corresponding positions among a pair of electrode fluid discharge pipes (170) are interconnected in the first direction (x), thereby forming a first internal discharge pipe (183) and a second internal discharge pipe (184), respectively.

[0104] Here, a raw water flow unit (200) is arranged between adjacent flow electrode cartridge units (100, 100a), and the first internal inlet pipe (181), the second internal inlet pipe (182), the first internal discharge pipe (183), and the second internal discharge pipe (184) are blocked in the first direction (x) by the raw water frame (210) of the raw water flow unit (200).

[0105] Accordingly, a pair of electrode fluid inlet pipes (160) of the flow electrode cartridge units (100, 100a) on both sides of the first direction (x) and a pair of first electrode fluid connection pipes (251) that are connected in the first direction (x) are formed on the upper side plate of the raw water frame (210) so that the first internal inlet pipe (181) and the second internal inlet pipe (182) are connected in the first direction (x), thereby forming a first internal inlet pipe (181) and a second internal inlet pipe (182) in which the electrode fluid inlet pipe (160) and the first electrode fluid connection pipe (251) are connected in the first direction (x).

[0106] Likewise, a pair of electrode fluid discharge pipes (170) of the flow electrode cartridge units (100, 100a) on both sides of the first direction (x) and a pair of second electrode fluid connection pipes (252) communicating in the first direction (x) are formed on the lower side plate of the raw water frame (210) so that the first internal discharge pipe (183) and the second internal discharge pipe (184) are connected in the first direction (x), thereby forming a first internal discharge pipe (183) and a second internal discharge pipe (184) in which the electrode fluid discharge pipe (170) and the second electrode fluid connection pipe (252) are connected in the first direction (x).

[0107] Here, an electrode fluid inlet hole (161) is formed in one of a pair of electrode fluid inlet tubes (160) of a cartridge unit (100, 100a) for a single flow electrode, which connects the corresponding electrode fluid inlet tube (160) with the flow electrode channel. Similarly, an electrode fluid discharge hole (171) may be formed in one of a pair of electrode fluid discharge tubes (170) of a cartridge unit (100, 100a) for a single flow electrode, which connects the corresponding electrode fluid discharge tube (170) with the flow electrode channel. In one embodiment, the electrode fluid inlet hole (161) and the electrode fluid discharge hole (171) may be formed in the electrode fluid inlet tube (160) and the electrode fluid discharge tube (170) which are respectively positioned in a diagonal direction.

[0108] To be more specific, in the embodiment of the present invention, the cartridge unit (100) for the positive flow electrode and the cartridge unit (100a) for the negative flow electrode are alternately arranged in the first direction (x).

[0109] Here, an electrode fluid inlet hole (161) may be formed in an electrode fluid inlet tube (160) forming a first internal inlet tube (181) among a pair of electrode fluid inlet tubes (160) of a cartridge unit (100) for a positive flow electrode. And, an electrode fluid inlet hole (161) may be formed in an electrode fluid inlet tube (160) forming a second internal inlet tube (182) among a pair of electrode fluid inlet tubes (160) of a cartridge unit (100a) for a negative flow electrode.

[0110] In addition, an electrode fluid discharge hole (171) may be formed in an electrode fluid discharge pipe (170) forming a first internal discharge pipe (183) among a pair of electrode fluid discharge pipes (170) of a cartridge unit (100a) for a negative flow electrode. In addition, an electrode fluid discharge hole (171) may be formed in an electrode fluid discharge pipe (170) forming a second internal discharge pipe (184) among a pair of electrode fluid discharge pipes (170) of a cartridge unit (100) for a positive flow electrode.

[0111] According to the above configuration, when electrode fluid is introduced into the first internal inlet pipe (181) and the second internal inlet pipe (182) through the first electrode fluid inlet port (321) and the second electrode fluid inlet port (322) of the housing (300), respectively, the electrode fluid flowing through the first internal inlet pipe (181) passes through the positive electrode flow cartridge unit (100) and flows into the flow electrode channel of the positive electrode flow cartridge unit (100) through the electrode fluid inlet hole (161) formed in the electrode fluid inlet pipe (160).

[0112] And, the electrode fluid flowing through the second internal inlet pipe (182) passes through the cartridge unit (100a) for the cathode flow electrode and flows into the flow electrode channel of the cartridge unit (100a) for the cathode flow electrode through the electrode fluid inlet hole (161) formed in the electrode fluid inlet pipe (160).

[0113] Here, when positive power is applied to the electrode plate (150) of the cartridge unit (100) for the positive flow electrode and negative power is applied to the electrode plate (150) of the cartridge unit (100a) for the negative flow electrode, the electrode fluid flowing in the flow electrode channel of the cartridge unit (100) for the positive flow electrode is charged positively, and the electrode fluid flowing in the flow electrode channel of the cartridge unit (100a) for the negative flow electrode is charged negatively.

[0114] And, the electrode fluid flowing through the flow electrode channel of the cartridge unit (100) for the positive flow electrode is discharged through the electrode fluid discharge hole (171) at the bottom to the second internal discharge pipe (184) and discharged to the outside through the second electrode fluid discharge port (332) of the housing (300). And, the electrode fluid flowing through the flow electrode channel of the cartridge unit (100a) for the negative flow electrode is discharged through the electrode fluid discharge hole (171) at the bottom to the first internal discharge pipe (183) and discharged to the outside through the first electrode fluid discharge port (331) of the housing (300).

[0115] Here, the second housing (312) blocks the rear side of the first internal inlet pipe (181), the second internal inlet pipe (182), the first internal discharge pipe (183) and the second internal discharge pipe (184) in the first direction (x).

[0116] According to the above configuration, paths are formed in which the electrode fluids charged positively and negatively flow independently of each other. Instead of forming a separate flow line for supplying the electrode fluid to each flow electrode cartridge unit (100, 100a), the flow line for the flow of the electrode fluid is formed through the structure of the flow electrode cartridge unit (100, 100a), thereby simplifying the structure and reducing the overall size of the product.

[0117] In addition, the cartridge unit (100) for the positive flow electrode and the cartridge unit (100a) for the negative flow electrode are each configured in the form of a cartridge-type module, thereby maximizing the contact area with the raw water, thereby improving process performance.

[0118] In addition, by producing it in the form of a large-area cartridge, it can contribute to large-area utilization while simultaneously achieving the effect of reducing installation space.

[0119] In addition, the cartridge unit (100) for the positive flow electrode and the cartridge unit (100a) for the negative flow electrode are each modularized, making individual management easy, and providing an effect suitable for assembly, installation, and maintenance.

[0120]

[0121] *Meanwhile, at least one of the first case (110) and the second case (120) according to the embodiment of the present invention may be configured to include a plurality of electrode-side distribution guide ribs (112, 122). In the embodiment of the present invention, it is exemplified that the distribution guide ribs are formed in each of the first case (110) and the second case (120).

[0122] Here, the electrode-side distribution guide rib (112, 122) is located inside the flow electrode channel and disperses the electrode fluid flowing in through the electrode fluid inlet hole (161) in the lateral direction (y) inside the flow electrode channel.

[0123] In one embodiment, the electrode-side distribution guide rib (112, 122) has a round shape that is convex in the upward direction, so as to distribute the electrode fluid flowing in the downward direction in the lateral direction (y). Here, the shape of the electrode-side distribution guide rib (112, 122) may have a different shape that can distribute the raw water in the lateral direction (y).

[0124] In the present invention, as an example, electrode-side distribution guide ribs (112, 122) are supported by a plurality of electrode-side vertical brackets (113, 123) extending in the vertical direction (z) in the first case (110) and the second case (120).

[0125] According to the above configuration, the electrode fluid is evenly distributed while flowing downward, so that the supercapacitor slurry flowing in the flow electrode channel is evenly distributed, and the effect of inducing even adsorption of ions without a dead zone can be expected.

[0126] In addition, it is possible to prevent the phenomenon of supercapacitor slurry accumulating and clogging in a specific area inside the flow electrode channel.

[0127] Meanwhile, a first raw water connection pipe (187) that is connected to the raw water inlet pipe (230) and that is connected to the raw water outlet pipe (240) may be formed on the upper side plate surfaces of the first case (110) and the second case (120) of the cartridge unit (100, 100a) for the flow electrode at a position corresponding to the raw water inlet pipe (230). In addition, a second raw water connection pipe (188) that is connected to the raw water outlet pipe (240) may be formed on the lower side plate surfaces of the first case (110) and the second case (120) at a position corresponding to the raw water outlet pipe (240).

[0128] Here, the raw water inlet pipes (230) and the first raw water connection pipe (187) form a third internal inlet pipe (185) through which raw water flows in the first direction (x), and the raw water discharge pipes (240) and the second raw water connection pipe (188) form a third internal discharge pipe (186) through which raw water is discharged in the first direction (x). Here, the third internal inlet pipe (185) is connected to the raw water inlet portion (341) of the housing (300), and the third internal discharge pipe (186) is connected to the raw water discharge portion (342) of the housing (300). In addition, the first raw water connection pipe (187) and the second raw water connection are not connected to the flow electrode channel, so that the raw water flowing in the first raw water connection pipe (187) does not flow into the flow electrode channel, and the electrode fluid in the flow electrode channel is not discharged toward the second raw water connection pipe (188).

[0129] According to the above configuration, the raw water flowing into the third internal inlet pipe (185) through the raw water inlet portion (341) moves to the raw water inlet pipe (230) through the first raw water connecting pipe (187) forming the third internal inlet pipe (185), and moves to the raw water flow channel through the raw water inlet hole (231) formed in the raw water inlet pipe (230).

[0130] Likewise, the raw water discharged from the raw water flow channel toward the third internal discharge pipe (186) through the raw water discharge hole (241) of the raw water discharge pipe (240) can be discharged to the outside through the raw water discharge pipe (240) and the raw water discharge section (342).

[0131] In one embodiment, a first upper connecting tube (187a) and a second upper connecting tube (187b) are formed through the upper surfaces of the first case (110) and the second case (120), respectively, in the first direction (x), so that when the first case (110) and the second case (120) are joined, the first upper connecting tube (187a) and the second upper connecting tube (187b) form the first raw water connecting tube (187).

[0132] Likewise, a first lower connecting pipe (188a) and a second lower connecting pipe (188b) are formed penetrating in the first direction (x) on the lower plates of the first case (110) and the second case (120), respectively, so that when the first case (110) and the second case (120) are joined, the first lower connecting pipe (188a) and the second lower connecting pipe (188b) form a second raw water connecting pipe (188).

[0133] Meanwhile, in the flow electrode capacitor deionization device (10) according to the embodiment of the present invention, the first housing (311), the cartridge unit for the flow electrode (100, 100a), the raw water flow unit (200), and the second housing (312) are fastened by bolt fastening, as an example.

[0134] In one embodiment, as illustrated in FIG. 3, a plurality of fastening holes (311a, 312a) may be formed along the edges of the four sides of the first housing (311) and the second housing (312), a plurality of fastening holes (114, 115) may be formed at positions corresponding to the plate surfaces of the first case (110) and the second case (120) of the flow electrode cartridge unit (100), and a plurality of fastening holes (213) may be formed at positions corresponding to the plate surface of the raw water frame (210) of the raw water flow unit (200). Then, by inserting fastening bolts (520) into the fastening holes (311a, 312a, 114, 115, 213) and then fastening a fastening nut (510), the first housing (311), the flow electrode cartridge unit (100, 100a), the raw water flow unit (200), and the second housing (312) may be connected. At this time, a gasket can be applied to prevent electrode fluid and raw water from leaking to the outside.

[0135] Although certain embodiments of the present invention have been illustrated and described, it will be apparent to those skilled in the art that modifications may be made to the embodiments without departing from the spirit or scope of the invention. The scope of the invention is defined by the appended claims and their equivalents.

[0136] [Explanation of symbols]

[0137] 10: Flow electrode capacitive deionization device

[0138] 100: Cartridge unit for flow electrode 110: First case

[0139] 111: First ion passage area 112: Electrode side dispersion guide rib

[0140] 113: Electrode side vertical bracket 114: Case fastening hole

[0141] 120: Second case 121: Second ion passage area

[0142] 122: Electrode side distribution guide rib 123: Electrode side vertical bracket

[0143] 124: Case fastening hole 130: First ion permeable membrane

[0144] 140: Second ion permeable membrane 150: Electrode plate

[0145] 160: Electrode fluid inlet pipe 160a: First electrode fluid inlet pipe

[0146] 160b: Second electrode fluid inlet pipe 161: Electrode fluid inlet hole

[0147] 170: Electrode fluid discharge pipe 170a: First electrode fluid discharge pipe

[0148] 170b: Second electrode fluid discharge pipe 171: Electrode fluid discharge hole

[0149] 181: First internal inlet pipe 182: Second internal inlet pipe

[0150] 183: First internal exhaust pipe 184: Second internal exhaust pipe

[0151] 185: Third internal inlet pipe 186: Third internal discharge pipe

[0152] 187: First raw water connector 188: Second raw water connector

[0153] 200: Raw water flow unit 210: Raw water frame

[0154] 211: Raw water distribution guide rib 212: Raw water vertical bracket

[0155] 213: Frame fastener 220: Source side ion permeable membrane

[0156] 230: Raw water inlet pipe 231: Raw water inlet hole

[0157] 240: Raw water discharge pipe 241: Raw water discharge hole

[0158] 251: First electrode fluid connection pipe 252: Second electrode fluid connection pipe

[0159] 300: Housing 311: First Housing

[0160] 312: Second housing 321: First electrode fluid inlet

[0161] 322: Second electrode fluid inlet 331: First electrode fluid outlet

[0162] 332: Second electrode fluid discharge port 341: Raw water inlet port

[0163] 342: Raw water discharge port 410: Both power lines

[0164] 420: Sound power line

[0165] The present invention is applied to the field of water treatment using flow electrode capacitive deionization.

Claims

1. In a flow electrode capacitive deionization device, A plurality of flow electrode cartridge units arranged in a first direction, each having an electrode fluid flowing inside thereof, and capable of transmitting ions in at least one direction among both sides in the first direction; A raw water flow unit, which is connected to the cartridge units for the flow electrodes on both sides in the first direction, between a pair of cartridge units for the flow electrodes that are adjacent to each other in the first direction, and through which raw water to be deionized flows, and through which ions can pass in both sides in the first direction, A housing for sealing the cartridge units for the flow electrodes, each of which is arranged on the outermost sides on both sides in the first direction, in the first direction; A plurality of said flow electrode cartridge units include positive power lines and negative power lines alternately connected in the first direction to the plurality of said flow electrode cartridge units so as to form positive flow electrode cartridge units and negative flow electrode cartridge units alternately in the first direction; A flow electrode capacitive deionization device characterized in that when power is applied through the positive power line and the negative power line, negative ions in the raw water flowing through each of the raw water flow units move to the electrode fluid in the cartridge unit for the positive flow electrode, and positive ions in the raw water flowing through each of the raw water flow units move to the electrode fluid in the cartridge unit for the negative flow electrode.

2. In paragraph 1, The above raw water flow unit A raw water frame having raw water flow channels open to both sides of the first direction formed therein, A pair of raw water-side ion permeable membranes each connected to the raw water frame on both sides in the first direction so that the raw water flow channel is blocked on both sides in the first direction; A raw water inlet pipe formed on the upper side of the raw water frame, through which the raw water flows into the raw water flow channel; A flow electrode capacitor deionization device characterized by including a raw water discharge pipe formed on the lower side of the raw water frame and through which the raw water in the raw water flow channel is discharged.

3. In paragraph 2, A flow electrode capacitive deionization device characterized in that a pair of the above-mentioned raw water-side ion permeable membranes have the property of permeating both negative ions and positive ions.

4. In paragraph 2, Among the pair of above-mentioned raw water-side ion-permeable membranes, the raw water-side ion-permeable membrane facing the cartridge unit for the anode flow electrode is applied with an anion-permeable membrane that allows negative ions to pass through; A flow electrode capacitive deionization device characterized in that the ion permeable membrane on the raw water side facing the cartridge unit for the flow electrode of the cathode among the pair of ion permeable membranes on the raw water side is a cation permeable membrane that allows positive ions to pass through.

5. In paragraph 2, The above raw frame is A flow electrode capacitive deionization device characterized by comprising a plurality of raw water distribution guide ribs positioned inside the raw water flow channel and causing the raw water introduced through the raw water inlet pipe to flow downward while being distributed laterally inside the raw water flow channel.

6. In paragraph 2, Each of the above-mentioned flow electrode cartridge units A first case having a first ion passage area formed on the plate surface in the first direction, A second case is formed on the plate surface in the first direction, and is combined with the first case so that a flow electrode channel for the electrode fluid to flow is formed therein; Attached to the surface of the first case, the first ion-passing region is a first ion-permeable membrane, A second ion permeable membrane attached to the plate surface of the second case to block the second ion passage area, An electrode plate disposed inside the flow electrode channel and electrically connected to the positive power line or the negative power line, A pair of electrode fluid inlet tubes formed laterally spaced apart from each other on the upper side of the plate surface of the first case and the second case and penetrating the first case and the second case in the first direction; A pair of electrode fluid discharge tubes are formed on the lower side of the plate surface of the first case and the second case and are spaced apart from each other in the lateral direction, and penetrate the first case and the second case in the first direction; Among the pair of electrode fluid inlet tubes of each of the above flow electrode cartridge units, the electrode fluid inlet tubes at corresponding positions are mutually connected in the first direction to form a first internal discharge tube and a second internal discharge tube, respectively; Among the pair of electrode fluid discharge pipes of each of the above-described cartridge units for the flow electrode, the electrode fluid discharge pipes at corresponding positions are mutually connected in the first direction to form a first internal discharge pipe and a second internal discharge pipe, respectively; An electrode fluid inlet hole is formed in an electrode fluid inlet tube forming the first internal inlet tube among a pair of electrode fluid inlet tubes of the cartridge unit for the positive flow electrode, and an electrode fluid inlet hole is formed in an electrode fluid inlet tube forming the second internal inlet tube among a pair of electrode fluid inlet tubes of the cartridge unit for the negative flow electrode; An electrode fluid discharge hole is formed in an electrode fluid discharge pipe forming the first internal discharge pipe among a pair of electrode fluid discharge pipes of the cartridge unit for the positive flow electrode, and an electrode fluid discharge hole is formed in an electrode fluid discharge pipe forming the second internal discharge pipe among a pair of electrode fluid discharge pipes of the cartridge unit for the negative flow electrode; A flow electrode capacitive deionization device characterized in that the electrode fluid introduced from the outside flows through the first internal inlet pipe and the second internal inlet pipe, passes through the electrode fluid channel, and is discharged to the outside through the first internal discharge pipe and the second internal discharge pipe.

7. In paragraph 6, On the upper side plate of the raw water frame, a pair of the electrode fluid inlet pipes of the cartridge unit for the flow electrode on both sides in the first direction and a pair of first electrode fluid connecting pipes communicating in the first direction are formed, so that the electrode fluid inlet pipe, the first electrode fluid connecting pipe, and the electrode fluid inlet pipe communicating in the first direction form the first internal inlet pipe and the second internal inlet pipe, respectively; On the lower side plate of the raw water frame, a pair of the electrode fluid discharge pipes of the cartridge unit for the flow electrode on both sides in the first direction and a pair of second electrode fluid connection pipes communicating in the first direction are formed, so that the electrode fluid discharge pipe, the second electrode fluid connection pipe, and the electrode fluid discharge pipe communicating in the first direction form the first internal discharge pipe and the second internal discharge pipe, respectively; A flow electrode capacitive deionization device, characterized in that the first electrode fluid connection pipe and the second electrode fluid connection pipe are not in communication with the raw water flow channel.

8. In paragraph 6, A first raw water connection pipe communicating with the raw water inlet pipe is formed on the upper side surface of the first case and the second case at a position corresponding to the raw water inlet pipe; A second raw water connection pipe communicating with the raw water discharge pipe is formed on the lower side surface of the first case and the second case at a position corresponding to the raw water discharge pipe; The above raw water inlet pipes and the first raw water connecting pipes form a third internal inlet pipe through which the raw water flows in the first direction; The above raw water discharge pipes and the second raw water connecting pipes form a third internal discharge pipe through which the raw water is discharged in the first direction; A flow electrode capacitive deionization device, characterized in that the first raw water connecting tube is not connected to the flow electrode channel, and the second raw water connecting tube is not connected to the flow electrode channel.

9. In paragraph 8, The above housing The first electrode fluid inlet connected to the first internal inlet pipe and supplying the electrode fluid from the outside to the first internal inlet pipe; A second electrode fluid inlet connected to the second internal inlet pipe and supplying the electrode fluid from the outside to the second internal inlet pipe; A first electrode fluid discharge unit connected to the first internal discharge pipe and discharging the electrode fluid flowing through the first internal discharge pipe to the outside; A second electrode fluid discharge unit connected to the second internal discharge pipe and discharging the electrode fluid flowing through the first internal discharge pipe to the outside; A raw water inlet connected to the third internal inlet pipe and supplying the raw water from outside to the third internal inlet pipe; A flow electrode capacitor deionization device characterized by including a raw water discharge unit connected to the third internal discharge pipe and discharging the raw water flowing through the third internal discharge pipe to the outside.

10. In paragraph 8, A flow electrode capacitive deionization device characterized in that when the raw water frame and the first case or the second case are combined, the raw water flow channel and the flow electrode channel are combined so as to be sealed with the outside of the raw water frame and the first case or the second case.

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