KR102019318B1 - Hybrid generating device and method for electricity and concentrated water and desalting - Google Patents

Abstract

The present invention provides a hybrid power generation apparatus and method capable of simultaneously producing electricity and desalination for desalination of seawater or brackish water by using electrochemical potential energy generated during operation of reverse electrodialysis (RED) for electrodialysis (ED). I would like to.

Description

HYBRID GENERATING DEVICE AND METHOD FOR ELECTRICITY AND CONCENTRATED WATER AND DESALTING}

The present invention relates to a hybrid power generation apparatus and method capable of simultaneously producing electricity and producing brine and demineralized water. The present invention relates to an integrated device integrating reverse electrodialysis (RED) and electrodialysis (ED, Electrodialysis). The present invention relates to a hybrid power generation apparatus and method capable of continuously and simultaneously desalination.

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

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

In other words, it is a power generation method that directly converts chemical energy generated by ions dissolved in sea water (salt water) into fresh water through ion exchange membranes into electrical energy, and loses energy compared with existing power generation methods such as thermal power, hydropower, and nuclear power. This enemy is the generator.

On the other hand, the electrodialysis (ED) process uses an ion exchange membrane that selectively permeates an electrolyte (positive or negative) having electrical properties among chemical components dissolved in water when an electric potential is applied to the electrode. Is a membrane separation process for separating ionic substances.

More specifically, by applying electric power to the electrode, the cation or anion dissolved in the water moves to each electrode side, so that a desalting chamber in which the ion concentration decreases and a concentration chamber in which the ion concentration increases are alternately formed.

However, such a desalination process using electrodialysis has the disadvantage of consuming energy because the electrode needs to be powered.

Although these technologies are currently being published as a new renewable energy source, various research reports and papers have been published. However, the electrochemical potential energy generated during the operation of the reverse electrodialysis (RED) device is used for the electrolysis of the electrolysis (ED). No linkage system has been reported to desalination.

The present invention provides a hybrid power generation apparatus and method capable of simultaneously producing electricity and desalination for desalination of seawater or brackish water by using electrochemical potential energy generated during operation of reverse electrodialysis (RED) for electrodialysis (ED). Its purpose is to.

In order to achieve the above object, the present invention, the first anode electrode, the first cathode electrode electrically connected to the first anode electrode, and disposed between the first anode electrode and the first cathode electrode, the first high concentration solution and the first A first power generation unit including a plurality of first ion exchange membranes for partitioning a flow path of a low concentration solution; The second anode electrode and the second anode electrode and the second cathode electrode electrically connected to the second anode electrode, the second anode electrode and the second cathode electrode, which are spaced apart from the first cathode electrode by a predetermined distance, are disposed between the second high concentration solution and the second low concentration solution. A second power generation unit including a plurality of second ion exchange membranes for partitioning a flow path of the flow path; And a separation part defined as a space between opposing surfaces of the first cathode electrode and the second anode electrode, the separation part having at least one desalting flow path and a concentration flow path for the third high concentration solution to flow; It provides a hybrid power generation device comprising a.

In addition, a carbon dioxide capture device including a carbon dioxide absorbent using a carbon dioxide absorbent, and an absorbent flow path through which the absorbent absorbed by carbon dioxide is discharged; And the hybrid power generation device according to claim 1, wherein the absorbent flow path and the first and second high concentration solution flow paths are capable of fluid movement to supply the absorbent absorbed with carbon dioxide to the first and second high concentration solution flow paths of the hybrid power generation device. It provides a hybrid power generation device that is connected easily.

The method may further include supplying a high concentration solution and a low concentration solution to the first and second high concentration solution flow paths and the first and second low concentration solution flow paths described above; And supplying a high concentration solution to the desalting flow path and the concentrated flow path of the separation unit. It provides a hybrid power generation method comprising a.

According to the present invention, energy is produced in the first and second power generation units, and the energy produced at this time is used in the separation unit, so that fresh water is continuously supplied through electrochemical desalination of seawater and brackish water without using additional energy. There is an effect that can be produced.

In addition, the fresh water produced in the separation unit can be used as drinking water or other living water, and the fresh water and concentrated concentrated water can be reused as low and high concentration solutions of the first and second power generation units, thereby improving the efficiency of the device. You can.

In addition, by independently connecting the electrical circuit of each of the cathode electrode and the anode electrode for producing electricity, it is easy to maintain and maintain continuous operation even if a problem occurs in the part of the device.

1 to 3 are configuration diagrams of a hybrid power generation device according to a first embodiment of the present invention.
4 and 5 are configuration diagrams of a hybrid power generation apparatus according to a second embodiment of the present invention.
6 is a schematic diagram of a hybrid power generation apparatus according to a third 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 being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

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 hybrid power generation apparatus and method capable of generating electricity and desalination at the same time, by using the reverse electrodialysis (RED, Reverse Electrodialysis) and electrodialysis (ED, Electrodialysis) at the same time capable of continuous generation of salt and desalination It relates to a hybrid system.

According to an exemplary hybrid power generation apparatus of the present invention, the energy is produced in the first and second power generation units, and the energy produced at this time is used in the separation unit, so that no additional energy is used and electrochemical desalination of seawater and brackish water. Through this is effective to produce fresh water continuously.

1 to 3 are configuration diagrams of a hybrid power generation apparatus according to a first embodiment of the present invention, FIGS. 4 and 5 are configuration diagrams of a hybrid power generation apparatus according to a second embodiment of the present invention, and FIG. It is a schematic diagram of the hybrid power generation apparatus which concerns on 3rd Example.

Hereinafter, a hybrid power generation apparatus and method according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6.

First, according to the water quality classification by the salt concentration of the US Geological Survey, 'saline' or 'sea water' generally means a solution having a salt concentration of 35,000 mg / L or more of salt (mainly NaCl) concentration of sea water. For example, 'base' may mean a solution having a salt concentration of about 1,000 to 10,000 mg / L, and 'fresh water' may mean a solution having a salt concentration of 0 to 1,000 mg / L.

In the present specification, the first and second low concentration solutions refer to a low concentration solution introduced for generation of concentration difference or salt difference.

In particular, the first and second low concentration solutions may be brackish water or fresh water.

In addition, the first and second high concentration solution means a high concentration solution introduced for the concentration difference or salt generation.

In particular, the first and second high concentration solutions may be saline, seawater, brackish water, and mixed solutions comprising one or more of these.

In addition, the low concentration solution and the high concentration solution may include a first discharge solution and a second discharge solution discharged from the separation unit.

Also, the third high concentration solution means a high concentration solution introduced for desalination or desalination.

In particular, the third high concentration solution may be a power generation unit discharge solution discharged from the first power generation unit 100 or the second power generation unit 200 to be described later, brine, sea water, brackish water, and a mixed solution including one or more thereof. .

In addition, in the present specification, a spacer, a gasket, and the like, which are generally disposed between each ion exchange membrane to maintain an internal flow path spacing, are omitted for convenience of description.

As shown in FIG. 1, the hybrid power generation apparatus 10 according to the first embodiment of the present invention includes a first power generation unit 100, a second power generation unit 200, and a separation unit 300.

The first power generation unit 100 of the present invention includes a first anode electrode 101, a first cathode electrode 102 electrically connected to the first anode electrode 101, and a first anode electrode 101 and a first cathode. The plurality of first ion exchange membranes 110 are disposed between the electrodes 102 to partition the flow path between the first high concentration solution and the first low concentration solution.

Here, the first ion exchange membrane 110 includes a plurality of cation exchange membrane 111 and anion exchange membrane 112, respectively.

More specifically, the first high concentration solution flow path 120 is formed by the cation exchange membrane 111 and the anion exchange membrane 112 disposed between the first anode electrode 101 and the first cathode electrode 102 spaced a predetermined distance apart. And the first low concentration solution flow path 130 may be partitioned.

A high concentration solution and a low concentration solution may flow into the first high concentration solution flow path 120 and the first low concentration solution flow path 130, respectively.

In addition, the second power generation unit 200 of the present invention may include a second anode electrode 201, a second cathode electrode 202 electrically connected to the second anode electrode 201, and a second anode electrode 201. It is disposed between the second cathode electrode 202, and includes a plurality of second ion exchange membrane 210 for partitioning the flow path of the second high concentration solution and the second low concentration solution.

Here, the second ion exchange membrane 210 includes a plurality of cation exchange membranes 211 and anion exchange membranes 212, respectively.

More specifically, the second high concentration solution flow path 220 is formed by the cation exchange membrane 211 and the anion exchange membrane 212 disposed between the second anode electrode 201 and the second cathode electrode 202 disposed at predetermined intervals. And the second low concentration solution flow path 230 may be partitioned.

A high concentration solution and a low concentration solution may flow into the second high concentration solution flow path 220 and the second low concentration solution flow path 230, respectively.

Here, in the first power generation unit 100 and the second power generation unit 200, when the high concentration solution and the low concentration solution flow through the respective high concentration solution flow paths 120 and 220 and the low concentration solution flow paths 130 and 230, the first ions are respectively. The first and second anode electrodes 101 and 201 and the first and second cathode electrodes 102 and 202 are formed by the concentration difference between the high concentration solution and the low concentration solution passing through the exchange membrane 110 and the second ion exchange membrane 210. Electricity can be produced at

That is, by the concentration difference between the low concentration solution and the high concentration solution, cations and anions contained in the high concentration solution selectively move the ion exchange membrane, and electricity may be produced.

Meanwhile, the separation part 300 of the present invention is defined as a space between opposing surfaces of the first cathode electrode 102 and the second anode electrode 201, and at least one desalination for flowing the third high concentration solution. The flow path 321 and the enrichment flow path 322 are included.

More specifically, the separator 300 of the present invention includes a plurality of third ion exchange membranes 310 for dividing the desalination passage 321 and the concentrated passage 322.

Here, the third ion exchange membrane 310 includes a plurality of cation exchange membranes 311 and anion exchange membrane 312.

In particular, the desalination flow path 321 of the separation unit 300 performs the desalination process by electricity produced by the first and second power generation units 100 and 200.

More specifically, the first power generation unit 100 and the second power generation unit 200 may lower the concentration of the first and second low concentration solution flow paths 130 and 230 and the first and second high concentration solution flow paths 120 and 220. When the solution and the high concentration solution flow, the concentration difference between the low concentration solution and the high concentration solution passes through the first and second ion exchange membranes 110 and 210 and the first and second anode electrodes 101 and 201 and the first and second Electricity may be produced at the second cathode electrodes 102, 202.

By the electricity produced at the first cathode electrode 102 and the second anode electrode 201, the ionic material of the third high concentration solution moves toward the first cathode electrode 102 and the second anode electrode 201, respectively. Desalination and concentration may be performed in the desalination flow path 321 and the concentration flow path 322.

That is, the ionic material may pass through the cation exchange membrane 311 and the anion exchange membrane 312 to the first cathode electrode 102 and the second anode electrode 201 and may be desalted or concentrated.

Referring to FIG. 2, in the ionic material, the cationic material moves toward the first cathode electrode 102 and the anionic material moves toward the second anode electrode 201. 300 may be divided into a desalination passage 321 and a concentrated passage 322.

More specifically, the ionic material of the third high concentration solution introduced into the separator 300 may be formed of the cationic material in the first cathode by electricity produced at the first cathode electrode 102 and the second anode electrode 201. It moves toward the electrode 102 and passes through the cation exchange membrane 311.

At the same time, the anionic material moves toward the second anode electrode 201 and passes through the anion exchange membrane 312.

At this time, since the cationic material does not pass through the anion exchange membrane 312 and the anionic material does not pass through the cation exchange membrane 311, the flow path of the separation section partitioned by the third ion exchange membrane is the desalination flow passage 321. And a condensation passage 322 is formed in the desalination passage 321, that is, desalination, or desalination, to discharge brackish or fresh water, and the concentrated condensate 322 discharges the concentrated condensate.

Meanwhile, the first cathode electrodes 102 and 202 and the second anode electrode 201 of the present invention include first surfaces 102a and 201a and second surfaces 102b and 201b, respectively.

That is, the separator 300 of the present invention may be defined as a space between the opposing surfaces 102a and 201a of the first cathode electrode 102 and the second anode electrode 201.

Here, the opposing surface refers to the first surface 102a of the first cathode electrode and the first surface 201a of the second anode electrode.

Accordingly, the separator 300 may be defined as a space between the first surface 102a of the first cathode electrode and the first surface 201a of the second anode electrode.

More specifically, the separation unit 300 may be provided to be in contact with the opposing surfaces 102a and 201a of the first cathode electrode 102 and the second anode electrode 201 when the third high concentration solution flows. Can be.

Therefore, when the third high concentration solution flows, the third high concentration solution may be provided to be in contact with the first surface 102a of the first cathode electrode and the first surface 201a of the second anode electrode.

More specifically, when the third high concentration solution flows, the ionic material of the third high concentration solution moves toward the opposite surfaces 102a and 201a of the first cathode electrode 102 and the second anode electrode 201. Can be.

Here, the ionic material may include a cationic material and an anionic material.

In addition, the cationic material may pass through the first cathode electrode 102 and the anionic material may move through the second anode electrode 201.

In particular, the ionic material is a dissolving material including salt contained in the third high concentration solution. For example, the cationic material may be sodium ion (Na +), and the anionic material may be chlorine ion (Cl−). It may be, but is not limited thereto.

On the other hand, the electrode solution supplied to produce electricity in the first and second power generation unit (100,200) includes an electrolyte and may include any one of the above-described low concentration solution or high concentration solution, the separation unit 300 Electrode solution on the second surface (102b, 201b) side of each of the first cathode and the second anode (102,201), which forms a, it is also preferable to use an electrolyte solution containing an electrolyte, fresh water, pure water or high ion conductivity.

In addition, the first cathode electrode 102 and the second anode electrode 201 may be formed of different materials on both sides of the power generation unit side and the separation unit side.

Here, the first surface 102a of the first cathode electrode 102 faces the separation unit 300 side, and the second surface 102b faces the power generation unit side, that is, the first power generation unit 100 side.

In addition, the first surface 201a of the second anode electrode 201 faces the separation part 300 side, and the second surface 201b faces the power generation part side, that is, the second power generation part 200 side.

More specifically, the first cathode electrode 102 is formed of a different material from the second surface 102b facing the first power generation unit 100 and the first surface 102a facing the separation unit 300. Can be.

In addition, the second anode electrode 201 may be formed of different materials from the second surface 201b facing the second power generation unit 200 and the first surface 201a facing the separation unit 300. have.

Accordingly, the first surfaces 102a and 201a and the second surfaces 102b and 201b of each of the first cathode electrode 102 and the second anode electrode 201 may be formed of different materials.

In addition, the first surfaces 102a and 201a of each of the first cathode electrode and the second anode electrode may be a structure described above, and the second surfaces 102b and 201b may be current collectors.

Meanwhile, the present invention further includes a first supply unit 401 for supplying any one or more of effluent water, brackish water, fresh water, and a mixed solution including one or more of these into the flow paths 130 and 230 of the first and second low concentration solutions. can do.

In addition, the second supply unit 402 for supplying any one or more of the seawater, brackish water, and a mixed solution containing at least one of them to the flow path (120,220) of the first and second high concentration solution.

The apparatus may further include a third supply unit 403 for supplying any one or more of seawater, brackish water, and a mixed solution including one or more of these to the desalination passage 321 and the concentrated passage 322 of the separator 300. can do.

In particular, the discharge solution discharged from the desalination passage 321 and the concentrated passage 322 is supplied to the first and second low concentration solution passages 130 and 230 or the first and second high concentration solution passages 120 and 220, respectively. The first and second flow paths 140 and 240 may be further included.

In particular, the first flow passage 140 may fluidly move with the first and second low concentration solution flow passages 130 and 230 so that the first flow passage 140 may be supplied to the first power generation unit side, the second power generation unit side, or both the first and second power generation units. Connection may be provided.

In addition, the second flow path 240 may fluidly move with the first and second high concentration solution flow paths 120 and 220 so that the second flow path 240 may be supplied to the first power generation part side, the second power generation part side, or both the first and second power generation parts side. Connection may be provided.

Here, the discharge solution is a discharge solution discharged from the desalination flow path 321 and the concentration flow path 322, the ion of the high concentration solution flowing through the ion exchange membrane to move to the electrode side and then concentrated with the desalination flow path 321 It means a solution discharged from the flow path (322).

That is, in the desalination flow path 321, the first discharge solution which is a solution having a concentration lower than the flowed in concentration is discharged, and in the concentration flow path 322, the second discharge solution which is a solution having a concentration higher than the flowed in concentration is discharged. Can be.

When this is transferred to the first and second power generation units 100 and 200, the concentration difference is larger than that of general seawater and freshwater, so that high energy can be recovered while reusing the discharged solution. There is.

In addition, when the first discharge solution and the second discharge solution are properly diluted and introduced into the low concentration solution flowing into the first and second power generation units 100 and 200, the output is increased by lowering the internal resistance between the ion exchange membranes. It can be effective.

In addition, after the electricity is produced in the first and second low concentration solution flow paths 130 and 230 or the first and second high concentration solution flow paths 120 and 220, the discharge unit discharge solution discharged is desalination flow path 321 and Third and fourth flow paths (not shown) for supplying to the enrichment flow path 322 may be further included.

Here, when the high-concentration solution and the low-concentration solution flow into the plurality of first high concentration and first low concentration solution flow paths 120 and 130 and the second high concentration and second low concentration solution flow paths 220 and 230, respectively, The first anode electrode 101 and the first cathode electrode 102 and the second anode electrode 201 and the first through the cation exchange membranes 111 and 211 and the anion exchange membranes 112 and 212, respectively, by concentration differences. After the electricity is produced by the second cathode electrode 202, it means a solution discharged from each of the first and second high concentration solution flow path (120, 220).

That is, as the ions of the introduced high concentration solution move through the ion exchange membrane to the low concentration solution side, it may be a diluted high concentration solution having a lower concentration than the high concentration solution introduced.

By transferring it to the separation unit, by desalting a diluted high concentration solution having a lower concentration than seawater, there is an effect that can improve the efficiency of desalination.

Meanwhile, the first cathode electrode 102 and the second anode electrode 201 of the present invention may be electrochemically connected.

Here, the first cathode electrode 102 and the second anode electrode 201 are not electrically connected directly, but because the flow of electrons is generated by the movement of ions can be connected electrochemically.

In addition, the first cathode electrode 102 electrically connected to the first anode electrode 101 may be connected through a first resistor 103, and the first resistor 103 may be provided to be adjustable in size.

In addition, the second cathode electrode 202 electrically connected to the second anode electrode 201 may be connected through a second resistor 203, and the second resistor 203 may be provided to be adjustable in size. .

In particular, the first anode electrode 101 and the second cathode electrode 202 may also be electrically connected to each other, and may be connected to each other through a third resistor 301.

As shown in FIG. 3, the hybrid power generation device 10 having the above configuration may include a form in which each cathode electrode and the anode electrode are inverted, and are disposed between each cathode electrode and the anode electrode. The arrangement of the cation exchange membrane and the anion exchange membrane may also be appropriately changed.

Here, the reversed form means, for example, that the cathode electrode is an anode electrode, the anode electrode is a cathode electrode, the cation exchange membrane is an anion exchange membrane and the anion exchange membrane is a cation exchange membrane.

On the other hand, using the hybrid power generation device 10 having the above configuration will be described the process of the electricity production and desalination at the same time as follows.

In the following description, the first and second low concentration solutions and the first to third high concentration solutions are supplied from the respective supply units as an example. However, as described above, low or high concentrations may be appropriately used using the first to fourth flow paths. The solution can be fed.

First, referring again to FIG. 1, when the low concentration solution and the high concentration solution flow into the first and second power generation units 100 and 200 through the first and second supply units 401 and 402, the difference in concentration between the low concentration solution and the high concentration solution is obtained. This causes a potential difference.

Accordingly, the flow of electrons occurs in the first and second anode electrodes 101 and 201 and the first and second cathode electrodes 102 and 202.

The flow of electrons as described above means that a potential is applied to the separation unit 300 defined as a space between opposite surfaces of the first cathode electrode 102 and the second anode electrode 201.

Accordingly, the first ionic material in the third high concentration solution passing through the deionization flow path 321 and the concentration flow path 322 of the separation part 300 by the applied potential is respectively first. The opposite side of the cathode electrode 102 and the second anode electrode 201 is moved to the side.

At this time, each ionic material passes through the cation exchange membrane 311 and the anion exchange membrane 312, and among the ionic materials, the ionic material not passing through the cation exchange membrane 311 or the anion exchange membrane 312 is concentrated flow path By moving to 322, the liquid is concentrated and the first discharge solution is discharged.

At this time, in the desalination flow path 321, a desalination process is performed to discharge the desalted second discharge solution.

Since the separation unit 300 of the hybrid power generation device 10 configured as described above does not require an electrode for desalination, there is an effect of implementing a more compact device.

In addition, since the potential applied to the separation unit 300 is electricity produced by the first and second power generation units 100 and 200, there is an effect of producing fresh water without using additional energy.

In addition, each of the anode and cathode electrodes that are electrically connected to each other may be connected to the first through third resistors 103, 203, and 301 to implement an independent electric circuit.

Therefore, the potential applied to the separation unit 300 can be continuously supplied, thereby maintaining the desalination process continuously, and at the same time, the parts requiring maintenance such as the ion exchange membrane can be partially replaced without stopping the operation of the separation unit 300. You can do it.

In particular, the first to third resistors 103, 203 and 301 may be adjusted in size so that the operating conditions may be changed by adjusting the resistance values according to the concentrations of the low concentration solution and the high concentration solution respectively supplied to the hybrid generator 10. .

For example, when the concentration of the third high concentration solution supplied to the separator 300 is high, the electrical energy transferred to the separator 300 by increasing the resistance values of the first resistor 103 and the second resistor 203. Can be raised.

Accordingly, the moving speed of the ionic material contained in the third high concentration solution is increased, so that the desalination can be performed quickly.

On the other hand, the hybrid power generation apparatus 20 according to the second embodiment of the present invention may further improve the efficiency of desalination by arranging a plurality of first and second power generation units 100 and 200.

3 and 4, a plurality of first power generating units 100 and second power generating units 200 may be arranged in an alternating manner.

That is, the first power generating unit 100, the second power generating unit 200, and then the first power generating unit 100 and the second power generating unit 200 may be sequentially arranged.

At this time, if each desalination flow path 321 is connected to the fluid movement, the fresh water effect can be improved.

For example, as shown in FIG. 5, when about 3.5 wt% of seawater is supplied to the third high concentration solution flow path 320 of the separation unit 300, each of the desalting flow paths in which the supplied sea water is fluidly movable to each other ( As the plurality of passes through the 321 and the concentrated flow passage 322, desalination is repeatedly performed to finally produce about 0.05 wt% of fresh water in the desalination flow passage 321.

In addition, the concentrated flow path 322 may be discharged more concentrated concentrated water, using this as a high concentration solution of the first and second power generation unit (100,200) has the effect of further improving the power generation efficiency.

In addition, as shown in FIG. 4, a large amount of fresh water can be produced by connecting the third supply unit 403 to each separation unit 300.

Meanwhile, the hybrid power generation device 30 according to the third exemplary embodiment of the present invention includes a carbon dioxide collecting device 1000 including an absorbent flow path for collecting carbon dioxide using a carbon dioxide absorbent and discharging the absorbent absorbed with carbon dioxide. .

In addition, the above-described hybrid power generation device (10 or 20), the absorbent flow path and the first and second high concentration solution to supply the absorbent absorbed carbon dioxide to the first and second high concentration solution flow path of the hybrid power generation device. The flow path includes fluidly connected.

As an example, the absorbent in which carbon dioxide is absorbed may be a product generated through carbon dioxide absorption using an absorbent during a carbon capture storage (CCS) capture process.

This reaction can be represented by the following Scheme 1.

Scheme 1

Abs (absorbent) (aq) + CO2 (g ) ↔ Abs + (aq) + HCO3 - (aq)

The carbonate (HCO 3-) contained in the absorbent moves through the anion exchange membrane in the first and second power generation units of the hybrid generator, and the hydrogen (H +) ions move through the cation exchange membrane to generate a potential difference. As a result, electricity can be produced. Here, the hydrogen (H +) ions may be present in water (H 2 O) included in the solvent of the absorbent.

The present invention also provides a hybrid power generation method.

For example, the hybrid power generation method relates to a power generation method through the hybrid power generation apparatuses 10, 20, and 30 according to the first to third embodiments described above.

Therefore, the details of the hybrid power generation apparatus described below may be equally applied.

The hybrid power generation method includes supplying a high concentration solution and a low concentration solution to the first and second high concentration solution flow paths and the first and second low concentration solution flow paths of the first and second power generation units according to the hybrid power generation apparatus.

The method may also include supplying a third high concentration solution to the desalting flow path and the concentrated flow path of the separation part.

10, 20, 30: hybrid power unit
100: first power generation unit
101: first anode electrode
102: first cathode electrode
102a: first cathode electrode first surface 102b: first cathode electrode second surface
103: first resistance 110: a plurality of first ion exchange membranes
200: second power generation unit
201: second anode electrode
201a: second anode electrode first surface 202b: second anode electrode second surface
202: second cathode electrode
203: second resistor 210: a plurality of second ion exchange membranes
300: separation unit 301: third resistance
310: a plurality of third ion exchange membrane
321: desalination channel 322: concentrated channel

Claims (15)

A first anode electrode, a first cathode electrode electrically connected to the first anode electrode, and disposed between the first anode electrode and the first cathode electrode, the plurality of passages for partitioning a flow path between the first high concentration solution and the first low concentration solution A first power generation unit including a first ion exchange membrane;
The second anode electrode and the second anode electrode and the second cathode electrode electrically connected to the second anode electrode, the second anode electrode and the second cathode electrode, which are spaced apart from the first cathode electrode by a predetermined distance, are disposed between the second high concentration solution and the second low concentration solution. A second power generation unit including a plurality of second ion exchange membranes for partitioning a flow path of the flow path; And
A separation part defined as a space between opposing facing surfaces of the first cathode electrode and the second anode electrode, the separation part having at least one desalting flow path and a concentration flow path for the third high concentration solution to flow; Including;
The flow of electrons is generated in the first anode electrode, the first cathode electrode, the second anode electrode, and the second cathode electrode by the concentration difference between the low concentration solution and the high concentration solution introduced into the first and second power generation units. Potential is applied,
By virtue of the applied potential, the ionic material in the third high concentration solution flowing in the separator moves toward opposite sides of the first cathode electrode and the second anode electrode. The method of claim 1,
The separating unit includes a plurality of third ion exchange membranes for partitioning the desalting passage and the concentrated passage. The method of claim 1,
When the low concentration solution and the high concentration solution flow through the first and second low concentration solution flow paths and the first and second high concentration solution flow paths,
A hybrid power generation apparatus that generates electricity at the first and second anode electrodes and the first and second cathode electrodes while passing through the first and second ion exchange membranes by the concentration difference between the low concentration solution and the high concentration solution. The method of claim 3,
By the electricity produced at the first cathode electrode and the second anode electrode, the ionic material of the third high concentration solution moves to the first cathode electrode and the second anode electrode, respectively, and desalination and concentration are performed in the desalting flow path and the concentrated flow path. A hybrid power generation device characterized by the above. The method of claim 1,
The first cathode electrode and the second anode electrode is a hybrid power generation device formed of a different material on both sides toward the power generation portion side and the separation unit side. The method of claim 1,
And a first supply unit for supplying at least one of brackish water and fresh water into a flow path of the first and second low concentration solutions. The method of claim 1,
And a second supply unit for supplying at least one of brine, seawater, brackish water, and a mixed solution including at least one of them into a flow path of the first and second high concentration solutions. The method of claim 1,
And a third supply unit for supplying any one or more of brine, seawater, brackish water, and a mixed solution including one or more of the desalting flow path and the concentrated flow path. The method of claim 1,
And a first flow passage and a second flow passage for supplying the discharge solution discharged from the desalting flow passage and the concentrated flow passage to the first and second low concentration solution flow passages or the first and second high concentration solution flow passages, respectively. The method of claim 1,
A hybrid power generation apparatus, characterized in that a plurality of first and second power generation unit arranged respectively. The method of claim 1,
The hybrid power generation device of the first cathode electrode and the second anode electrode is electrochemically connected. The method of claim 1,
The first cathode electrode electrically connected to the first anode electrode is connected via a first resistor, the first resistor is provided to be adjustable in size. The method of claim 1,
The second cathode electrode electrically connected to the second anode electrode is connected via a second resistor, the second resistor is provided to be adjustable in size. A carbon dioxide collecting device including an absorbent flow path through which carbon dioxide is collected using a carbon dioxide absorbent and discharged by the carbon dioxide absorbed absorbent; And
Including a hybrid power generation device according to claim 1,
And the absorbent flow path and the first and second high concentration solution flow paths are fluidly connected to supply the absorbent absorbed with carbon dioxide to the first and second high concentration solution flow paths of the hybrid power generation device. Supplying a high concentration solution and a low concentration solution to the first and second high concentration solution flow paths and the first and second low concentration solution flow paths according to claim 1; And
Supplying a high concentration solution to the desalting flow path and the concentrated flow path of the separator according to claim 1; Hybrid power generation method comprising a.

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