KR102292325B1 - Gas diffusion reactor - Google Patents

Abstract

A gas diffusion reactor according to an embodiment of the present invention comprises: a gas part having an inlet into which gas enters and an exhaust port; an electrode mounting part for decomposing the gas by applying electric power; a gas diffusion electrode that separates the gas part and the electrode mounting part and transmits the gas; and a light-transmitting part having a light-transmitting window to be fastened with the electrode mounting part to form an enclosed space within the electrode mounting part, and to allow light to be irradiated to the gas diffusion electrode.

Description

Gas diffusion reactor

The present invention relates to a gas diffusion reactor utilizing light reaction and gas diffusion. More specifically, it relates to a gas diffusion reactor with increased reaction rate and efficiency.

Techniques for reducing carbon dioxide or removing air pollutants have been continuously developed.

Methods for removing these substances include collecting them or changing them into other substances through chemical reactions.

Among these, there are two typical methods for changing into another substance through a chemical reaction.

The first method is to make and apply an electrochemical reaction cell to improve the rate and reactivity of the reduction reaction. The electrochemical reaction cell is composed of a gas diffusion layer, a catalyst layer, and a polymer electrolyte membrane, and is configured to improve the carbon dioxide reduction reaction by increasing the reaction area between carbon dioxide and the catalyst.

The second method is to apply a photocatalytic vapor phase reactor. The photocatalytic gas phase reactor consists of a light irradiation part, a catalyst, a gas diffusion part, a gas circulation part, and a sealing part, and is configured to monitor the photocatalytic reaction in a specific gas composition by applying light to the sealed part through the light irradiation part.

The conventional electrochemical reaction cell is a reactor that targets the reduction reaction of carbon dioxide, and it is structurally impossible to apply a photoelectrochemical reaction that requires the application of light, and it is also difficult to construct a system for efficiently monitoring the concentration of the target gas.

On the other hand, the photocatalytic vapor phase reactor has a structural limitation in grafting photoelectrochemical reaction because it is impossible to apply electricity.

Therefore, in order to cause an electrochemical reaction while improving the reaction rate with a photocatalyst, innovative development of structures and devices is required.

1) Japanese Patent No. 3655349 (2005.03.11.)

The present invention provides a gas diffusion reactor that simultaneously utilizes a photoreaction and an electric reaction in a carbon dioxide decomposition or air pollutant removal reactor.

As a technical means for achieving the above-described technical problem, the gas diffusion reactor according to an embodiment of the present invention includes a gas part equipped with an inlet and an exhaust port into which gas enters, an electrode mounting part for decomposing the gas by applying electric power, and the A gas diffusion electrode that separates the gas part and the electrode mounting part, through which gas passes, and the electrode mounting part are fastened to form a closed space within the electrode mounting part, and light can be irradiated to the gas diffusion electrode. Includes light-transmitting parts having a transparent window.

The gas part may include two or more inlet ports, and at least one of the inlet ports may re-inject the gas discharged to the exhaust port.

It may further include a pump that pressurizes the gas discharged from the exhaust port and injects it back into one or more of the intake ports.

The exhaust port may be connected to a gas analyzer.

The electrode mounting parts may include a counter electrode.

The electrode mounting parts may further include a reference electrode.

The gas diffusion electrode may be conductive and waterproof.

The gas diffusion electrode may include a current collector forming an outline in a planar structure and carbon paper filling the inside.

The gas diffusion electrode may be composed of a double layer of a micropore structure layer and a coarse pore structure layer.

In the gas diffusion electrode, the micropore structure layer may be positioned adjacent to the electrode mounting part, and the coarse pore structure layer may be adjacent to the gas part.

Among the surfaces of the gas diffusion electrode, a surface adjacent to the light transmitting part may be coated with a photocatalyst.

The photocatalytic coating may be made of any one or more of titanium dioxide and tungsten trioxide.

The light-transmitting window may include an optical window for transmitting light, an optical window cover for coupling the optical window to the light-transmitting body, and an O-ring for sealing between the optical window and the light-transmitting body.

The optical window may be made of a quartz material.

According to an embodiment of the present invention, by adopting a structure in which light is directly irradiated to the reaction surface, the effect of the electrical reaction and the photoreaction can be obtained at the same time.

According to an embodiment of the present invention, the degree of reaction can be measured in real time while minimizing the bias of the photoreaction.

1 is an exploded perspective view showing the overall configuration according to an embodiment of the present invention.
2A is a perspective view of a gas part body according to an embodiment of the present invention, and FIG. 2B is a cross-sectional view showing a structure in which the gas parts are connected to a gas circulation system according to an embodiment of the present invention. 2C is a front view of the gas part, and FIG. 2D is a rear view of the gas part.
Figure 3a is a perspective view of the electrode mounting parts according to an embodiment of the present invention, Figure 3b is a perspective view showing the connection structure of the electrode mounting parts and the reference electrode, Figure 3c is a structure in which the gas diffusion electrode is fastened to the electrode mounting parts A perspective view is shown.
4A is a front view of a gas diffusion electrode according to an embodiment of the present invention, and FIG. 4B is a cross-sectional view.
5A is an exploded perspective view of the light transmitting parts according to an embodiment of the present invention, FIG. 5B is a perspective view showing a structure in which the light transmitting parts are combined, and FIG. 5C is a perspective view seen from the rear of the light transmitting parts.
Figure 6a is a front view of the gas diffusion reactor according to an embodiment of the present invention, Figure 6b is a side cross-sectional view taken along the line A of Figure 6a, Figure 6c is a front view excluding the connection of the gas diffusion reactor, Figure 6d is a gas It is a side view of the diffusion reactor, and FIG. 6E is a rear view of the gas diffusion reactor.
7 is an exploded perspective view of a gas diffusion reactor including a fastening means according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

The main feature of the present invention lies in a structure that activates a reaction by using both light and electric power. In order to emphasize this, we focus on the structure that separates the gas and the electrolyte, the structure through which light is transmitted to the chemical reaction area, the gas circulation pressurization structure that allows the gas to be easily dissolved in the electrolyte, and the separation membrane (gas diffusion electrode) structure. Explain.

The present invention has a structure in which plate-shaped light-transmitting parts, electrode mounting parts, and gas parts are sequentially stacked. Here, the gas part direction is defined as the rear side and the light transmission part direction is defined as the front side.

1 is an exploded perspective view showing the overall configuration according to an embodiment of the present invention.

The gas diffusion reactor according to an embodiment of the present invention includes a gas part 110 having an inlet and an exhaust port, an electrode mounting part 120 for decomposing gas by applying electric power, a gas part 110 and an electrode mounting part 120 . ) and is fastened with the gas diffusion electrode 130 and the electrode mounting parts 120 through which the gas passes to form an enclosed space within the electrode mounting parts 120, and light can be irradiated to the gas diffusion electrode 130 It includes a light-transmitting part 140 having a light-transmitting window so as to be there.

Here, the gas parts 110 may include two or more intake ports, and at least one of the intake ports may re-inject the gas discharged to the exhaust port. By re-injecting the gas, it is possible to maintain the flow of the gas at a high velocity to ensure that the internal gas is thoroughly mixed.

A pump that pressurizes the gas discharged from the exhaust port and injects it back into one or more of the intake ports may be further provided. As will be described later, since the gas must permeate through the electrolyte, sufficient atmospheric pressure must be maintained. If the amount of gas discharged from the exhaust port is reduced, the atmospheric pressure can be increased, but there is a problem in that the gas inside is stagnant. Therefore, it is possible to maintain the flow of the gas while maintaining a high pressure by a method of re-injecting the discharged gas by pressurization.

The exhaust port may be connected to the gas analyzer. Emissions can be determined only by analyzing the degree of gas reaction in real time in the gas diffusion reactor. By analyzing the physical properties of the gas discharged from the exhaust port, it can be used as information to control the degree and speed of the discharge.

The electrode mounting parts 120 may include a counter electrode. In addition, the electrode mounting parts 120 are provided with a counter electrode, which is an electrode capable of applying an electromotive force to the gas reactor and emitting the generated electric charge to the outside.

The electrode mounting parts 120 may further include a reference electrode. The reference electrode is configured to check whether an appropriate voltage is applied to the gas reactor. A detailed description of the electrode mounting parts 120 will be described later with reference to FIG. 3 .

The gas diffusion electrode 130 may be conductive and waterproof. One surface of the gas diffusion electrode makes a space for accommodating the electrolyte together with the electrode mounting parts 120 and a light-transmitting window to be described later, and the other surface makes a space for accommodating the gas together with the gas parts 110 . Accordingly, the gas diffusion electrode 130 serves as an interface that separates the liquid electrolyte from the gas. Since the gas diffusion electrode 130 blocks the flow of liquid and gas, it is preferable to be made waterproof, and since it serves to apply power so that a reaction can easily occur in the gas diffusion electrode 130, it is preferably conductive.

The gas diffusion electrode 130 may be composed of a current collector forming a contour in a planar structure and carbon paper filling the contour. The current collector may be made of a material such as copper having high conductivity and durability.

Carbon paper can be any product as long as it can be used as a gas diffusion layer.

The gas diffusion electrode 130 may be composed of a double layer of a micropore structure layer having micropores and a coarse pore structure layer. Both the micropore structure layer and the coarse pore structure layer may be made of carbon paper.

One surface of the gas diffusion electrode 130 is in contact with the electrode mounting parts 120 , and the other surface of the gas diffusion electrode 130 is in contact with the gas parts 110 . The double micropore structure layer may be configured to be adjacent to the electrode mounting part 120 and configured to be adjacent to the gas part 110 so that the coarse pore structure layer is in contact.

Here, among the surfaces of the gas diffusion electrode 130 , a surface adjacent to the light transmitting parts 140 may be coated with a photocatalyst. In particular, the photocatalyst may be coated on the micropore structure layer adjacent to the electrode mounting parts 120 among the gas diffusion electrodes 130 .

The photocatalytic coating may be made of any one or more of titanium dioxide and tungsten trioxide.

A more detailed description of the gas diffusion electrode 130 will be described later with reference to FIG. 4 .

The light-transmitting window may include an optical window that transmits light, an optical window cover that couples the optical window to the light-transmitting parts 140 , and an O-ring that seals the optical window and the light-transmitting body.

The light-transmitting window serves to prevent leakage of the electrolyte inside while transmitting light therein.

The optical window may be made of a quartz material. The optical window should have high transparency and high durability and fire resistance. Quartz is a suitable material for this purpose, and the optical window in direct contact with the electrolyte can be made of quartz.

A detailed description of the light transmitting parts 140 will be described later with reference to FIG. 5 .

2A is a perspective view of a gas part body according to an embodiment of the present invention, and FIG. 2B is a cross-sectional view showing a structure in which the gas parts are connected to a gas circulation system according to an embodiment of the present invention. 2C is a front view of the gas part, and FIG. 2D is a rear view of the gas part.

Referring to FIGS. 2A and 2B , the gas parts 110 have a space for confining the gas therein. In addition, the gas parts 110 are provided with the gas parts body 210 and various gas vents. The gas parts body 210 has a structure in which the rear is blocked, the front is perforated, and has gas vents on the side. The front surface of the gas parts body 210 is blocked by the gas diffusion electrode 130 described in FIG. 1 to form a space, and may further include a sealing member made of an elastic material for sealing.

Referring to FIGS. 2B and 2C , the gas parts 110 include the aforementioned gas parts body 210 , the first intake port 220 through which external gas enters, and the measurement intake port through which the gas from which the components of the discharged gas are measured and entered. 230 , a first exhaust port 240 through which the gas exits, and a second intake port 250 through which the exhausted gas enters again.

The gas parts 110 may further include a pump 260 connected to the first exhaust port 240 and the second intake port 250 , and the first exhaust port 240 may be further connected to the second exhaust port 270 . have. The first exhaust port 240 may separate and discharge the gas supplied to the pump 260 and the gas supplied to the second exhaust port 270 . The second exhaust port 270 may be connected to the third exhaust port 280 to discharge gas to the outside. Some of the gas discharged from the second exhaust port 270 may be connected to the measuring device 235 to measure the purification state of the gas. In this case, when the amount of foreign substances in the gas is higher than a preset amount, a control for reducing the amount of gas discharged to the second exhaust port 270 may be performed.

The measurement inlet 230 is connected to the gas analyzer 235, and may be a passage through which the gas whose component has been analyzed through the gas analyzer 235 is again injected.

Figure 3a is a perspective view of the electrode mounting parts according to an embodiment of the present invention, Figure 3b is a perspective view showing the connection structure of the electrode mounting parts and the reference electrode, Figure 3c is a structure in which the gas diffusion electrode is fastened to the electrode mounting parts A perspective view is shown.

3A to 3C , the electrode mounting parts 120 include an electrode mounting parts body 310 , a counter electrode 340 , and a reference electrode 320 .

The electrode mounting parts body 310 has a space capable of confining the electrolyte therein. The electrode mounting parts 120 are connected to the gas diffusion electrode on the rear side to form a sealed structure with a front side opening.

A counter electrode 340 and a reference electrode 320 may be connected to a side surface of the electrode mounting parts body 310 . The reference electrode 320 may be immersed in the electrolyte to measure the voltage, and the concentration of the gas included in the electrolyte may be measured through the measured voltage. The counter electrode 340 may apply power to select a reactive active material based on a potential difference with a gas diffusion electrode, which will be described later.

The counter electrode 340 may be made of platinum, and may be provided in a form immersed in an electrolyte to serve as a counter electrode of the gas diffusion electrode centered on the electrolyte.

It is preferable that the counter electrode does not block the irradiation of light, and it may be provided in a form that avoids the dimming area.

The electrode mounting parts body 310 may further include an electrolyte replacement hole 330 for filling or replacing the electrolyte after assembly.

The electrode mounting parts 120 function as a frame for containing the electrolyte therein. Since an electrochemical reaction occurs in the electrolyte, electrolyte degeneration and gas may occur. In this case, a new electrolyte may be introduced through the electrolyte replacement port 330 , and the modified electrolyte may be replaced.

Meanwhile, the electrode mounting parts 120 may further include a reaction gas exhaust port 350 . The reactive gas exhaust port 350 is configured to discharge the reactive gas generated during the inflow and outflow of the electrolyte or generated due to a reaction in the electrode mounting parts 120 . The reactive gas exhaust port 350 and the electrolyte replacement port 330 may be opened and closed together to perform an operation of additionally filling the electrolyte while the reactive gas is discharged.

Referring to FIG. 3C , the gas diffusion electrode 130 may be fastened to the rear surface of the electrode mounting parts 120 . The gas diffusion electrode 130 serves to confine the electrolyte, and serves to supply a gas to induce a photoelectrochemical reaction in the electrode mounting parts 120 .

4A is a front view of a gas diffusion electrode according to an embodiment of the present invention, and FIG. 4B is a cross-sectional view.

Referring to FIG. 4A , the gas diffusion electrode may be composed of a current collector 410 that forms a contour in a planar structure and carbon paper 420 that fills the contour. In order to be able to uniformly affect the voltage, the current collector 410 preferably has a symmetrical structure. Specifically, an annular structure is suitable. The current collector 410 serves to collect and transport positive charges generated through a reduction reaction on the carbon paper 420 or apply a voltage uniformly to the carbon paper 420 . The current collector 410 may be made of a material such as copper having high conductivity and durability.

Referring to FIG. 4B , the carbon paper 420 of the gas diffusion electrode may be composed of a double layer of a micropore structure layer 430 having micropores and a coarse pore structure layer 440 having large pores.

The coarse pore structure layer 440 serves as a filter to filter out foreign substances that may be included in the gas, and the gas can be easily permeated compared to the micropore structure layer.

The micropore structure layer 430 has a lower degree of gas permeation than the coarse pore structure layer 440 , but has a large surface area, so that the reaction rate can be increased.

One surface of the gas diffusion electrode is in contact with the electrode mounting part, and the other surface of the gas diffusion electrode is in contact with the gas part. The double micropore structure layer 430 may be configured to be adjacent to the electrode mounting part and configured to be adjacent to the gas part so that the tempered pore structure layer 440 is in contact.

The micropore structure layer 430 may be manufactured by sintering carbon nanoparticles, and the coarse pore structure layer 440 may have a structure made of carbon fibers.

Here, among the surfaces of the gas diffusion electrode, a surface adjacent to the light-transmitting part may be coated with a photocatalyst. The gas diffusion electrode allows gas to pass through. Therefore, the gas solubility of the electrolyte in contact with the gas diffusion electrode is maintained at a high level. That is, the reactant is maintained at a high level on the surface of the gas diffusion electrode adjacent to the electrode mounting part. When light is irradiated on this surface, the power required for the reaction is lowered or the reaction speed is improved. Accordingly, the reaction rate can be increased by coating the photocatalyst on the micropore structure layer 430 adjacent to the light transmitting parts of the gas diffusion electrode.

As the photocatalyst, _{a material such as titanium dioxide (TiO 2} ), tungsten trioxide (WO ₃ ), etc. may be modified, or a heterometallic catalyst in which various types of two metals are combined according to an energy level may be used.

Figure 5a is an exploded perspective view of the light-transmitting parts according to an embodiment of the present invention, 5b is a perspective view showing a structure in which the light-transmitting parts are combined, 5c is a perspective view seen from the rear of the light-transmitting parts.

5A to 5C, the light-transmitting window is an optical window 520 for transmitting light, an optical window cover 530 for fastening the optical window 520 to the light-transmitting body 510, and an optical window 520) and an O-ring 540 sealing the light-transmitting body 510 .

The light-transmitting window serves to prevent leakage of the electrolyte inside while transmitting light therein.

In other words, the light-transmitting window, the inner surface of the light-transmitting body 510, the inner surface of the electrode mounting parts body 310, and the gas diffusion electrode make a sealed space to accommodate the electrolyte. A light-transmitting window is provided on the light-transmitting parts 140 in a closed structure, so that light is transmitted through a transparent electrolyte to be irradiated to the gas diffusion electrode.

Figure 6a is a front view of the gas diffusion reactor according to an embodiment of the present invention, Figure 6b is a side cross-sectional view taken along the line A of Figure 6a, Figure 6c is a front view excluding the connection of the gas diffusion reactor, Figure 6d is a gas It is a side view of the diffusion reactor, and FIG. 6E is a rear view of the gas diffusion reactor.

6B and 6D , the gas diffusion reactor is assembled in a box-shaped structure by sequentially combining the gas parts 110 , the gas diffusion electrode 130 , the electrode mounting parts 120 and the light transmitting parts 140 .

That is, the gas parts 110 , the gas diffusion electrode 130 , the electrode mounting parts 120 , and the light transmitting parts 140 are coupled in order, and an O-ring is provided between them for sealing. On the side, the intake and exhaust port through which gas enters and exits and the electrode are connected.

Meanwhile, in the gas diffusion reactor according to an embodiment of the present invention, light and gas are introduced through separate paths.

Referring to FIGS. 6A and 6C , the optical window 520 is fixed to the front of the light transmitting parts 140 by the optical window cover 530 . Light is transmitted through the optical window 520 of the front to the inside. The transmitted light passes through the electrolyte of the electrode mounting parts 120 and is irradiated to the gas diffusion electrode 130 .

Meanwhile, a reaction gas is introduced through the gas parts 100 . The introduced gas passes through the gas diffusion electrode 130 and flows into the electrolyte in the electrode mounting parts 120 . The gas introduced into the electrolyte reacts electrically by a voltage applied to the counter electrode and the gas diffusion electrode 130 . At this time, the light introduced into the light transmitting parts 140 promotes the catalytic reaction of the photocatalyst applied to the gas diffusion electrode 130 . Accordingly, the reaction rate of the electric reaction is increased.

On the other hand, materials that do not react in the gas permeated through the electrolyte may be accumulated. In this case, by replacing the electrolyte through the electrolyte replacement port 330, it is possible to prevent a decrease in the reaction rate.

Depending on the reactant, a gas may be generated as a result of the electrical reaction. In this case, gas may be accumulated in the electrode mounting parts 120 to increase the atmospheric pressure. In this case, the gas may be exhausted by opening and closing the reactive gas exhaust port 350 .

Gas flowing into the gas parts 110 and not passing through the electrolyte may be exhausted through the first exhaust port. In addition, the reaction rate can be measured in real time through component analysis of the gas.

7 is an exploded perspective view of a gas diffusion reactor including a fastening means according to an embodiment of the present invention.

The fastening structure of the gas diffusion reactor can be divided into a load-bearing structure and an attachment structure. The bearing structure is formed by fastening the gas parts body 210, the electrode mounting parts body 310 and the light transmitting body 510 to form the structure of the gas diffusion reactor. Therefore, it serves to maintain the structure of the gas diffusion reactor from external impact. The gas parts body 210, the electrode mounting parts body 310, and the light transmitting body 510 are the main structures forming a sealed structure while forming the outside of the gas diffusion reactor, and the gas parts body 210, the electrode mounting parts body 310 ) and the light transmitting body 510 may be connected by a main fastening part 730 and a main fastening means 740 penetrating them. The main fastening part 730 may be a bolt, and the main fastening means 740 may be a nut.

The attachment structure is not a load-bearing structure such as the optical window cover 530 or the gas diffusion electrode, but serves to attach a component having a sealing structure.

The optical window cover 530 may be fastened to the light transmitting body 510 by means of an optical window fastening means 720 that is fastened through the optical window cover 530 to a hole provided in the light transmitting body 510 . In this case, the optical window cover 530 may fix the optical window 520 in a structure that surrounds and presses the periphery of the optical window 520 .

The gas diffusion electrode may be fastened to the electrode mounting parts body 310 by means of a gas diffusion electrode fastening means 710 penetrating the current collector 410 forming the outer periphery of the gas diffusion electrode. The electrode mounting parts body 310 may have a structure such as a hole through which the gas diffusion electrode fastening means 710 can be fastened.

The gas diffusion reactor according to an embodiment of the present invention has a structure in which light is directly irradiated to the gas diffusion electrode, so that the effects of the photoreaction and the electrochemical reaction can be obtained at the same time.

In particular, the gas diffusion reactor according to an embodiment of the present invention can be used to decompose various contaminants in gaseous and liquid states.

Specifically, the efficiency can be improved by being applied to a photocatalytic radical generation reaction as shown in Chemical Formula 1 below and a volatile organic compound (VOCs) decomposition reaction as shown in Chemical Formula 2 below.

[Formula 1]

phtocatalyst + hv ---> e-(CB) + h+(VB)

h+(VB) + H ₂ O ----> OH-

e- (CB) + O ₂ ------>˙O ₂ -

[Formula 2]

VOCs(CH ₃ CHO,CH ₂ O,CH ₃ COOH,C ₇ H ₈ ) + OH- ---> H ₂ O + CO ₂

VOCs(CH ₃ CHO,CH ₂ O,CH ₃ COOH,C ₇ H ₈ ) +˙O ₂ ---> H ₂ O + CO ₂

In addition, the gas diffusion reactor according to an embodiment of the present invention has both a configuration for injecting gas (gas parts and ancillary connection structures; 110, 210, 220, 240) and a configuration for injecting an electrolyte (electrolyte replacement port; 330). Therefore, it can be used for the purpose of decomposing contaminants in the liquid electrolyte by omitting or not using the gas injection configuration. In other words, it can be used as a water quality improvement device by injecting a solution containing contaminants together with an electrolyte.

A gas diffusion reactor according to an embodiment of the present invention includes a configuration for injecting an electrolyte and a configuration for removing or collecting gas generated from the electrolyte. Therefore, it can be utilized as an electrolysis device of water using an aqueous sodium hydroxide solution or the like as an electrolyte.

The gas diffusion reactor according to an embodiment of the present invention is connected to the gas analyzer, so that the degree of the gas diffusion reaction can be checked in real time.

In the gas diffusion reactor according to an embodiment of the present invention, by injecting a part of the gas coming out of the first exhaust port back into the gas diffusion reactor, the mixing of the gas inside the gas diffusion reactor is activated to refine the gas analysis result, and to perform the gas diffusion reaction. has a stimulating effect.

The description of the present invention described above is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and likewise components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

110: gas parts 120: electrode mounting parts
130: gas diffusion electrode 140: light transmitting parts
210: gas parts body 220: first intake port
230: measurement intake and exhaust port 235: gas analysis device
240: first exhaust port 250: second intake port
260: pump 270: second exhaust port
310: electrode mounting parts 320: reference electrode
330: electrolyte replacement 340: counter electrode
350: reaction gas exhaust port 410: current collector
420: carbon paper 430: micropore structure layer
440: tempered pore structure layer 510: light transmitting body
520: optical window 530: optical window cover
540: O-ring 710: gas diffusion electrode fastening means
720: optical window fastening means 730: main fastening part
740: main fastening means

Claims (14)

Gas parts equipped with an intake and exhaust port into which gas enters;
electrode mounting parts for decomposing the gas by applying electric power;
a gas diffusion electrode separating the gas part and the electrode mounting part and allowing gas to pass therethrough; and
It is fastened with the electrode mounting parts to form an enclosed space within the electrode mounting parts, and includes light transmitting parts having a light transmitting window so that light can be irradiated to the gas diffusion electrode,
The gas diffusion electrode is conductive and waterproof, and a gas diffusion reactor comprising a current collector forming a contour in a planar structure and carbon paper filling the inside. According to claim 1,
The gas parts are
A gas diffusion reactor comprising two or more inlet ports, and at least one of the inlet ports re-injects the gas discharged to the exhaust port. 3. The method of claim 2,
The gas diffusion reactor according to claim 1, further comprising a pump for pressurizing the gas discharged from the exhaust port and injecting it back into at least one of the inlet ports. According to claim 1,
The exhaust port is gas diffusion reactor, characterized in that connected to the gas analyzer. According to claim 1,
The electrode mounting parts,
A gas diffusion reactor comprising a counter electrode. 6. The method of claim 5,
The electrode mounting parts,
Gas diffusion reactor, characterized in that it further comprises a reference electrode. delete delete According to claim 1,
The gas diffusion electrode is a gas diffusion reactor, characterized in that composed of a double layer of the micropore structure layer and the coarse pore structure layer. 10. The method of claim 9,
The gas diffusion electrode is a gas diffusion reactor, characterized in that the micropore structure layer is positioned adjacent to the electrode mounting parts, and the coarse pore structure layer is adjacent to the gas parts. According to claim 1,
Among the surfaces of the gas diffusion electrode, a surface adjacent to the light-transmitting part is coated with a photocatalyst. 12. The method of claim 11,
The photocatalytic coating is a gas diffusion reactor, characterized in that made of any one or more of titanium dioxide and tungsten trioxide. According to claim 1,
The light-transmitting window
an optical window that transmits light;
an optical window cover for fastening the optical window to the light transmitting body; and
Gas diffusion reactor comprising an O-ring sealing between the optical window and the light-transmitting body. 14. The gas diffusion reactor of claim 13, wherein the optical window is made of a quartz material.

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