Apparatus for decomposing carbon dioxide

Abstract

To provide an apparatus for decomposing carbon dioxide capable of decomposing carbon dioxide to carbon monoxide.SOLUTION: An apparatus for decomposing carbon dioxide includes a container, a sheet, a mobile device, a first electrode, and a second electrode. The container has a first space and a second space. The sheet adsorbs carbon dioxide contained in the gas in the first space when positioned in the first space. The mobile device can transfer the sheet from the first space to the second space. The sheet passes through between the first electrode and the second electrode when transferring from the first space to the second space. The carbon dioxide adsorbed on the sheet is decomposed into carbon monoxide by plasma generated between the first electrode and the second electrode when transferring from the first space to the second space.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a carbon dioxide decomposition device. [Background technology]

[0002] Known examples of conventional inventions relating to carbon dioxide decomposition apparatus include the carbon dioxide recovery apparatus described in Patent Document 1. In this carbon dioxide recovery apparatus, at least one element selected from the group consisting of Mg, Ca, Sr, Ba, Y, and La is supported on a mesoporous silica carrier. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-184229 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in the field of the carbon dioxide recovery device described in Patent Document 1, there is a demand for decomposing the recovered carbon dioxide into carbon monoxide.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a carbon dioxide decomposition device capable of decomposing carbon dioxide into carbon monoxide. [Means for solving the problem]

[0006] The first aspect is The carbon dioxide decomposition device includes a container, a sheet, a moving device, a first electrode, and a second electrode; The container has a first space and a second space, the sheet adsorbs carbon dioxide contained in the gas in the first space when positioned in the first space, the moving device is capable of moving the seat from the first space to the second space, the sheet passes between the first electrode and the second electrode when moving from the first space to the second space; When the carbon dioxide adsorbed by the sheet moves from the first space to the second space, the carbon dioxide is decomposed into carbon monoxide by plasma generated between the first electrode and the second electrode. It is a carbon dioxide decomposition device.

[0007] The second aspect is the moving device includes a first rail, a second rail, and a second moving body; the first rail is provided in the first space, the second rail is provided in the second space, the second moving body is connected to the seat and moves along the second rail to move the seat from the first space to the second space; the first rail has a spiral shape in the first space, When the seat is positioned in the first space, the seat has a spiral shape along the first rail. The carbon dioxide decomposition device according to the first aspect.

[0008] The third aspect is When the sheet is positioned in the first space, gas is supplied to the container, and carbon dioxide contained in the gas in the first space is adsorbed onto the sheet, when the moving device moves the sheet from the first space to the second space, carbon dioxide adsorbed by the sheet is decomposed into carbon monoxide by plasma generated between the first electrode and the second electrode; the carbon monoxide is vented from the container; The carbon dioxide decomposition device according to the first or second aspect. [Effects of the Invention]

[0009] According to the present invention, carbon dioxide can be decomposed into carbon monoxide. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of a carbon dioxide decomposition device 10. [Figure 2] FIG. 2 is a cross-sectional view of the carbon dioxide decomposition device 10 taken along the line XX. [Figure 3] FIG. 3 is a cross-sectional view of the carbon dioxide decomposition device 10 taken along the line YY. [Figure 4] FIG. 4 is a cross-sectional view of the carbon dioxide decomposition device 10 taken along the line XX. [Figure 5] FIG. 5 is an enlarged view of A in FIG. [Figure 6] FIG. 6 is an enlarged view of B in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] (Embodiment) [Structure of carbon dioxide decomposition device 10] The structure of a carbon dioxide decomposition apparatus 10 according to one embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the carbon dioxide decomposition apparatus 10. FIGS. 2 and 4 are cross-sectional views of the carbon dioxide decomposition apparatus 10 taken along line XX. In FIG. 2, the sheet 14a is located in the first space Sp1. In FIG. 4, the sheet 14a is located in the second space Sp2. FIG. 3 is a cross-sectional view of the carbon dioxide decomposition apparatus 10 taken along line YY. FIG. 5 is an enlarged view of A in FIG. 2. FIG. 6 is an enlarged view of B in FIG. 2.

[0012] Hereinafter, the direction in which the first portion 12a, the third portion 12c, and the second portion 12b of the container 12 are aligned is defined as the leftward direction. Also, the direction in which the central axis of the intake / exhaust port 12d of the container 12 extends is defined as the front-rear direction. The front-rear direction is perpendicular to the left-right direction. The direction perpendicular to the left-right direction and the front-rear direction is defined as the up-down direction.

[0013] The carbon dioxide decomposition apparatus 10 adsorbs carbon dioxide in exhaust gas generated in a factory and decomposes the carbon dioxide into carbon monoxide. As shown in Figures 1 and 2, the carbon dioxide decomposition apparatus 10 includes a container 12, sheets 14a and 14b, moving devices 15a and 15b, plasma panels 20a, 20b, and 22, and a plurality of guides G. To avoid cluttering the drawings, only representative guides G are labeled with reference numerals.

[0014] The container 12 has a first space Sp1, a second space Sp2, and a third space Sp3. Specifically, the container 12 includes a first portion 12a, a second portion 12b, a third portion 12c, and intake and exhaust ports 12d and 12e. The first portion 12a and the second portion 12b are rectangular parallelepiped boxes. However, eight corners of the first portion 12a and eight corners of the second portion 12b are chamfered. The first portion 12a is located to the right of the second portion 12b. The first portion 12a forms the first space Sp1. The second portion 12b forms the second space Sp2.

[0015] The third portion 12c has a rectangular cylindrical shape with a central axis extending in the left-right direction. The right end of the third portion 12c is connected to the left surface of the first portion 12a. The left end of the third portion 12c is connected to the right surface of the second portion 12b. The third portion 12c forms a third space Sp3. As a result, the first space Sp1 is connected to the second space Sp2 via the third space Sp3.

[0016] The intake and exhaust ports 12d and 12e have a cylindrical shape with a central axis extending in the front-rear direction. The front end of the intake and exhaust port 12d is connected to the rear surface of the first portion 12a. The front end of the intake and exhaust port 12e is connected to the rear surface of the second portion 12b. This allows gas to flow into the first space Sp1 through the intake and exhaust port 12d and to flow out of the first space Sp1 through the intake and exhaust port 12d. Gas can flow into the second space Sp2 through the intake and exhaust port 12e and to flow out of the second space Sp2 through the intake and exhaust port 12e.

[0017] The moving device 15a can move a seat 14a (described later) from the first space Sp1 to the second space Sp2. As shown in Fig. 2, the moving device 15a includes a first rail L1a, a second rail L2a, a first moving body 16a, a second moving body 18a, and stoppers S1a, S2a, S3a, and S4a.

[0018] The first rail L1a is provided in the first space Sp1. When viewed forward, the first rail L1a has a spiral shape in the first space Sp1. When viewed forward, the first rail L1a has a spiral shape that moves clockwise and approaches the center. Hereinafter, the end located on the inside of the first rail L1a will be referred to as the inner peripheral end. The end located on the outside of the first rail L1a will be referred to as the outer peripheral end. The outer peripheral end of the first rail L1a is located near the boundary between the first space Sp1 and the third space Sp3. A sheet 14a, which will be described later, moves along the first rail L1a. Therefore, the surface of the first rail L1a is coated with Teflon (registered trademark). The stopper S1a is located at the outer peripheral end of the first rail L1a. The stopper S2a is located at the inner peripheral end of the first rail L1a.

[0019] As shown in FIG. 3, the carbon dioxide decomposition apparatus 10 further includes a plurality of support members 302 and a plurality of support members 304. The plurality of support members 302 and the plurality of support members 304 are metal rod-shaped members extending in the front-rear direction. The rear end of the support member 302 is fixed to the upper surface of the first rail L1a. The front end of the support member 304 is fixed to the front surface of the first portion 12a. The rear end of the support member 304 is fixed to the lower surface of the first rail L1a. The front end of the support member 304 is fixed to the front surface of the first portion 12a. As a result, the first rail L1a is positioned within the first space Sp1 without contacting the first portion 12a.

[0020] As shown in Fig. 3, the container 12 also includes a protrusion 400. The protrusion 400 is located at the center in the up-down direction of the front surface of the first portion 12a. Therefore, the protrusion 400 overlaps with the intake / exhaust port 12d when viewed from the front. The protrusion 400 protrudes rearward from the front surface of the first portion 12a. When viewed from the left, the protrusion 400 has a triangular shape. When viewed from the left, the base of the protrusion 400 is in contact with the front surface of the first portion 12a.

[0021] The guides G are located near the corners of the first rail L1a and assist the sheet 14a (described later) in moving along the first rail L1a.

[0022] 2, the second rail L2a is provided in the second space Sp2. However, the structure of the second rail L2a is symmetrical to the structure of the first rail L1a, so a description thereof will be omitted. Also, the structure of the stoppers S3a and S4a is symmetrical to the structure of the stoppers S1a and S2a, so a description thereof will be omitted.

[0023] The first moving body 16a can move along the first rail L1a. The first moving body 16a includes a motor and a sensor. The first moving body 16a moves from the inner peripheral end of the first rail L1a toward the outer peripheral end. When the first moving body 16a reaches the outer peripheral end of the first rail L1a, it comes into contact with a stopper S1a. At this time, the sensor of the first moving body 16a comes into contact with the stopper S1a, and the rotation direction of the motor is reversed. As a result, the first moving body 16a moves from the outer peripheral end of the first rail L1a toward the inner peripheral end. When the first moving body 16a reaches the inner peripheral end of the first rail L1a, it comes into contact with a stopper S2a. At this time, the sensor of the first moving body 16a comes into contact with the stopper S2a, and the rotation direction of the motor is reversed. As a result, the first moving body 16a moves from the inner peripheral end of the first rail L1a toward the outer peripheral end. In this way, the first moving body 16a moves back and forth on the first rail L1a.

[0024] The second moving body 18a can move along the second rail L2a. However, the structure of the second moving body 18a is the same as that of the first moving body 16a, so a description thereof will be omitted.

[0025] As shown in Fig. 2, the sheet 14a is provided along the first rail L1a. Therefore, when the sheet 14a is positioned in the first space Sp1, the sheet 14a has a spiral shape along the first rail L1a when viewed in the forward direction. However, there is a space between the portion of the sheet 14a that runs around the outside and the portion of the sheet 14a that runs around the inside. Therefore, exhaust gas (gas) can flow forward or backward between the portion of the sheet 14a that runs around the outside and the portion of the sheet 14a that runs around the inside.

[0026] Here, in FIG. 2, the inner peripheral edge of the sheet 14a is referred to as the first edge t1a. The outer peripheral edge of the sheet 14a is referred to as the second edge t2a. The first moving body 16a is connected to the first edge t1a of the sheet 14a. The second moving body 18a is connected to the second edge t2a of the sheet 14a. As a result, in the transition from FIG. 2 to FIG. 4, the second moving body 18a moves from the outer peripheral edge to the inner peripheral edge along the second rail L2a, thereby moving the sheet 14a from the first space Sp1 to the second space Sp2. Meanwhile, in the transition from FIG. 4 to FIG. 2, the first moving body 16a moves from the outer peripheral edge to the inner peripheral edge along the first rail L1a, thereby moving the sheet 14a from the second space Sp2 to the first space Sp1.

[0027] As shown in FIG. 5, the sheet 14a includes a base layer 202 and adsorption layers 204 and 206. The base layer 202 is a resin film such as a PET (polyethylene terephthalate) resin film or a nylon film. The adsorption layer 204 is applied to the upper main surface of the sheet 14a. The adsorption layer 206 is applied to the lower main surface of the sheet 14a. The adsorption layers 204 and 206 are layers formed of a material capable of adsorbing carbon dioxide. Examples of the material capable of absorbing carbon dioxide include zeolite. When the sheet 14a is positioned in the first space Sp1, it adsorbs carbon dioxide contained in the exhaust (gas) in the first space Sp1. When the sheet 14a is positioned in the second space Sp2, it adsorbs carbon dioxide contained in the exhaust (gas) in the second space Sp2.

[0028] Plasma panels 20a, 20b, and 22 are located in third space Sp3. Plasma panels 20a, 22, and 20b are arranged in this order from top to bottom. Sheet 14a is located between plasma panel 20a and plasma panel 22. As shown in FIG. 6, plasma panel 20a includes a dielectric 101, a first electrode 102, and a second electrode 104. Dielectric 101 has a plate shape with an upper main surface and a lower main surface. First electrode 102 and second electrode 104 are provided within dielectric 101. First electrode 102 is located on second electrode 104. Plasma panels 20b and 22 have the same structure as plasma panel 20a, and therefore will not be described here.

[0029] A first AC voltage is applied to the first electrode 102 of plasma panel 20a, the first electrode 102 of plasma panel 20b, and the first electrode 102 of plasma panel 22. A second AC voltage is applied to the second electrode 104 of plasma panel 20a, the second electrode 104 of plasma panel 20b, and the second electrode 104 of plasma panel 22. However, the polarity of the first AC voltage is different from the polarity of the second AC voltage. As a result, plasma is generated between the second electrode 104 of plasma panel 20a and the first electrode 102 of plasma panel 22. Plasma is generated between the second electrode 104 of plasma panel 22 and the first electrode 102 of plasma panel 20a.

[0030] Because the plasma panels 20a, 20b, and 22 have the above structure, the sheet 14a is positioned between the second electrode 104 of the plasma panel 20a and the first electrode 102 of the plasma panel 22. As a result, when the sheet 14a moves from the first space Sp1 to the second space Sp2, it passes between the first electrode 102 of the plasma panel 22 and the second electrode 104 of the plasma panel 20a. When the sheet 14a moves from the first space Sp1 to the second space Sp2, the carbon dioxide adsorbed by the sheet 14a is decomposed into carbon monoxide by the plasma generated between the first electrode 102 of the plasma panel 22 and the second electrode 104 of the plasma panel 20a. Similarly, when the sheet 14a moves from the second space Sp2 to the first space Sp1, it passes between the first electrode 102 of the plasma panel 22 and the second electrode 104 of the plasma panel 20a. When the carbon dioxide adsorbed by the sheet 14a moves from the second space Sp2 to the first space Sp1, it is decomposed into carbon monoxide by the plasma generated between the first electrode 102 of the plasma panel 22 and the second electrode 104 of the plasma panel 20b.

[0031] The structure of the seat 14b and the moving device 15b is vertically symmetrical to the structure of the seat 14a and the moving device 15a, and therefore a description thereof will be omitted.

[0032] [Operation of carbon dioxide decomposition device 10] Next, the operation of the carbon dioxide decomposition device 10 will be described. First, as shown in FIG. 2, the sheet 14a is positioned in the first space Sp1. At this time, the first moving body 16a and the second moving body 18a are stopped for a predetermined time. While the sheet 14a is positioned in the first space Sp1 (i.e., for a predetermined time), exhaust gas (gas) is supplied to the container 12 from the intake / exhaust port 12d. As a result, carbon dioxide contained in the exhaust gas (gas) in the first space Sp1 is adsorbed by the sheet 14a. When the adsorption of carbon dioxide is completed, the supply of exhaust gas is stopped.

[0033] Next, as shown in Fig. 4, second moving body 18a moves from the outer circumferential edge to the inner circumferential edge of second rail L2a. At this time, argon is supplied to container 12 through intake / exhaust port 12d. Plasma is then generated between first electrode 102 of plasma panel 22 and second electrode 104 of plasma panel 20a. As a result, when moving device 15a moves sheet 14a from first space Sp1 to second space Sp2, carbon dioxide adsorbed by sheet 14a is decomposed into carbon monoxide by the plasma generated between first electrode 102 of plasma panel 22 and second electrode 104 of plasma panel 20a.

[0034] When the sheet 14a is positioned in the second space Sp2, carbon monoxide is discharged from the container 12 through the intake / exhaust port 12e.

[0035] After this, the sheet 14a is moved from the second space Sp2 to the first space Sp1. At this time, the carbon dioxide remaining in the sheet 14a is decomposed into carbon monoxide. However, this operation is the same as the operation in which the carbon dioxide adsorbed by the sheet 14a is decomposed into carbon monoxide when the sheet 14a is moved from the first space Sp1 to the second space Sp2, so a description thereof will be omitted.

[0036] [effect] The carbon dioxide decomposition device 10 can decompose carbon dioxide into carbon monoxide. More specifically, when the sheet 14a is positioned in the first space Sp1, it adsorbs carbon dioxide contained in the exhaust (gas) in the first space Sp1. Then, when the carbon dioxide adsorbed by the sheet 14a moves from the first space Sp1 to the second space Sp2, it is decomposed into carbon monoxide by plasma generated between the first electrode 102 of the plasma panel 22 and the second electrode 104 of the plasma panel 20a.

[0037] The carbon dioxide decomposition device 10 enables the plasma panels 20a, 20b, and 22 to be miniaturized. More specifically, when carbon dioxide adsorbed by the sheet 14a moves from the first space Sp1 to the second space Sp2, it is decomposed into carbon monoxide by plasma generated between the first electrode 102 of the plasma panel 22 and the second electrode 104 of the plasma panel 20a. Therefore, the plasma panels 20a, 20b, and 22 are provided in the third space Sp3 through which the sheet 14a passes, and are not provided in the first space Sp1 or the second space Sp2. This eliminates the need for a large plasma panel that faces the entire sheet 14a. As a result, the carbon dioxide decomposition device 10 enables the plasma panels 20a, 20b, and 22 to be miniaturized.

[0038] According to the carbon dioxide decomposition device 10, the sheet 14a adsorbs a large amount of carbon dioxide. More specifically, the first rail L1a has a spiral shape in the first space Sp1. As a result, when the sheet 14a is positioned in the first space Sp1, it has a spiral shape along the first rail L1a. Therefore, the exhaust gas (gas) passes through the gaps in the spiral-shaped sheet 14a. As a result, the amount of exhaust gas (gas) that comes into contact with the sheet 14a increases, and the amount of carbon dioxide that the sheet 14a adsorbs increases.

[0039] According to the carbon dioxide decomposition device 10, the sheet 14a adsorbs a large amount of carbon dioxide. More specifically, the adsorption layers 204, 206 are applied to the upper and lower main surfaces of the sheet 14a, respectively. This increases the area of ​​the adsorption layers 204, 206. As a result, the sheet 14a adsorbs a large amount of carbon dioxide.

[0040] The carbon dioxide decomposition device 10 can be made smaller. More specifically, the first rail L1a has a spiral shape in the first space Sp1. As a result, the sheet 14a has a spiral shape along the first rail L1a when positioned in the first space Sp1. Therefore, the sheet 14a can be accommodated in the small first portion 12a. As a result, the carbon dioxide decomposition device 10 can be made smaller.

[0041] In the carbon dioxide decomposition device 10, the system of the carbon dioxide decomposition device 10 is simplified. More specifically, the first moving body 16a and the second moving body 18a include sensors. When the sensors of the first moving body 16a and the second moving body 18a come into contact with the stoppers S1a, S2a, S3a, and S4a, the rotation of the motors of the first moving body 16a and the second moving body 18a is reversed. In this way, in the carbon dioxide decomposition device 10, sensors are used instead of a computer to control the first moving body 16a and the second moving body 18a. This allows the system of the carbon dioxide decomposition device 10 to be simplified.

[0042] In the carbon dioxide decomposition device 10, the carbon dioxide adsorbed by the sheet 14a is easily decomposed into carbon monoxide. More specifically, after the sheet 14a is moved from the first space Sp1 to the second space Sp2, the sheet 14a is moved from the second space Sp2 to the first space Sp1. When the sheet 14a is moved from the second space Sp2 to the first space Sp1, the carbon dioxide remaining in the sheet 14a is decomposed into carbon monoxide. Therefore, the carbon dioxide adsorbed by the sheet 14a is easily decomposed into carbon monoxide.

[0043] In the carbon dioxide decomposition device 10, the sheet 14a adsorbs and decomposes carbon dioxide while reciprocating between the first space Sp1 and the second space Sp2, thereby efficiently adsorbing and decomposing carbon dioxide.

[0044] In the carbon dioxide decomposition device 10, a protrusion 400 is provided on the container 12. The protrusion 400 is positioned at the center of the front surface of the first portion 12a in the vertical direction. The protrusion 400 protrudes rearward from the front surface of the first portion 12a. This allows the protrusion 400 to guide the exhaust gas supplied from the intake / exhaust port 12d upward and downward. Furthermore, eight corners of the first portion 12a are chamfered. Therefore, the exhaust gas flows upward and downward along the front surface of the first portion 12a, and then is guided forward by the chamfered corners of the first portion 12a. Thus, the exhaust gas flows so as to spread throughout the entire first portion 12a due to the protrusion 400 and the chamfered corners of the first portion 12a. As a result, a greater amount of gas comes into contact with the sheet 14a, increasing the amount of carbon dioxide adsorbed by the sheet 14a.

[0045] (Other embodiments) The carbon dioxide decomposition device according to the present invention is not limited to the carbon dioxide decomposition device 10, and can be modified within the scope of the invention.

[0046] When the sheet 14a is moved from the first space Sp1 to the second space Sp2, the carbon dioxide adsorbed by the sheet 14a may be sufficiently decomposed into carbon monoxide. In this case, after the sheet 14a is moved from the first space Sp1 to the second space Sp2 and before the sheet 14a is moved from the second space Sp2 to the first space Sp1, exhaust air may be supplied to the container 12 through the intake / exhaust port 12e.

[0047] The moving device 15a is not limited to the combination of the first moving body 16a, the second moving body 18a, the first rail L1a, and the second rail L2a. The moving device 15a may be, for example, a combination of a string, a roller, and a motor. In this case, the string is attached to the second end t2a of the sheet 14a. The motor rotates the roller, thereby winding up the string. This moves the sheet 14a from the first space Sp1 to the second space Sp2. A wire, a chain, or the like may be used instead of the string.

[0048] The shapes of the first rail L1a and the second rail L2a are not limited to a spiral shape, but may be straight or zigzag. [Explanation of symbols]

[0049] 10: Carbon dioxide decomposition device 12: Container 12a: 1st part 12b:Second part 12c: 3rd part 12d, 12e: Intake and exhaust ports 14a, 14b: Seat 15a,15b: Mobile device 16a: First mobile unit 18a: 2nd moving body 20a, 20b, 22: Plasma panels 101: Dielectric 102: 1st electrode 104:Second electrode 202: Base layer 204,206: Adsorption layer 302, 304: Support members 400: Protrusion G: Guide L1a: First rail L2a: Second rail S1a: Stopper S2a: Stopper Sp1: 1st space Sp2: 2nd space Sp3: 3rd space

Claims

1. The carbon dioxide decomposition device includes a container, a sheet, a moving device, a first electrode, and a second electrode; The container has a first space and a second space, the sheet adsorbs carbon dioxide contained in the gas in the first space when positioned in the first space; the moving device is capable of moving the seat from the first space to the second space, the sheet passes between the first electrode and the second electrode when moving from the first space to the second space; When the carbon dioxide adsorbed by the sheet moves from the first space to the second space, the carbon dioxide is decomposed into carbon monoxide by plasma generated between the first electrode and the second electrode. Carbon dioxide decomposition unit.

2. the moving device includes a first rail, a second rail, and a second moving body; the first rail is provided in the first space, the second rail is provided in the second space, the second moving body is connected to the seat and moves along the second rail to move the seat from the first space to the second space; the first rail has a spiral shape in the first space, When the seat is positioned in the first space, the seat has a spiral shape along the first rail. The carbon dioxide decomposition device according to claim 1.

3. When the sheet is positioned in the first space, gas is supplied to the container, and carbon dioxide contained in the gas in the first space is adsorbed by the sheet, when the moving device moves the sheet from the first space to the second space, carbon dioxide adsorbed by the sheet is decomposed into carbon monoxide by plasma generated between the first electrode and the second electrode; the carbon monoxide is vented from the container; The carbon dioxide decomposition device according to claim 1 or 2.

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