Adsorbent structure and gas separation adsorber

Abstract

To provide an adsorbent structure capable of efficiently adsorbing and desorbing a target gas.SOLUTION: The adsorbent structure 30 includes a metal sheet 31 made of a metal material and a plurality of adsorbent sheets 32 each having a meandering shape and gas adsorbability, and the metal sheet 31 and the plurality of adsorbent sheets 32 are laminated.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an adsorbent structure, a gas separation adsorber, and the like. [Background technology]

[0002] Conventionally, gas treatment using a temperature swing adsorption process has been known. Patent Document 1 discloses a gas treatment device that performs gas adsorption and desorption, which is an example of gas treatment, using a temperature swing adsorption process. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-154063 Summary of the Invention [Problem to be solved by the invention]

[0004] When a gas (target gas) is adsorbed and desorbed using a temperature swing adsorption process, the target gas is adsorbed at a low temperature and desorbed at a high temperature, thereby enabling efficient adsorption and desorption of the target gas. However, with the honeycomb rotor (adsorbent structure) disclosed in Patent Document 1, it is difficult to rapidly increase or decrease the temperature, which can make it difficult to efficiently adsorb and desorb the target gas.

[0005] Therefore, an object of the present invention is to provide an adsorbent structure or the like that can efficiently adsorb and desorb a target gas. [Means for solving the problem]

[0006] An adsorbent structure according to one aspect of the present invention comprises a metal sheet made of a metal material and a plurality of adsorbent sheets, each of which has a serpentine shape and gas adsorption properties, and the metal sheet and the plurality of adsorbent sheets are stacked.

[0007] Furthermore, a gas separation adsorption vessel according to one embodiment of the present invention comprises the adsorbent structure described above and two or more metal plates arranged parallel to each other and each having a planar shape, the adsorbent structure being disposed between the two or more metal plates, and the metal sheet and the two or more metal plates being perpendicular to each other.

[0008] Furthermore, a gas separation adsorption device according to one embodiment of the present invention comprises the adsorbent structure described above and two or more flat tubes made of a metal material and arranged parallel to each other, wherein the adsorbent structure is disposed between the two or more flat tubes, and the metal sheet and the two or more flat tubes are perpendicular to each other.

[0009] Furthermore, a gas separation adsorption device according to one embodiment of the present invention comprises a first cylindrical member having a cylindrical shape, and the above-described adsorbent structure arranged inside the cylindrical member and in contact with the first cylindrical member. [Effects of the Invention]

[0010] According to the adsorbent structure of the present invention, the adsorption and desorption of the target gas can be carried out efficiently. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view of a gas separation adsorber according to an embodiment. [Figure 2] FIG. 2 is a side view of the gas separation adsorber according to the embodiment. [Figure 3] FIG. 3 is a perspective view showing the configuration of the adsorbent structure according to the embodiment. [Figure 4] FIG. 4 is a perspective view showing the configuration of a metal sheet according to the embodiment. [Figure 5] FIG. 5 is a perspective view showing the structure of an adsorbent sheet according to an embodiment. [Figure 6] FIG. 6 is a side view of the adsorbent sheet according to the embodiment. [Figure 7]FIG. 7 is an enlarged view of an area VII enclosed by a dashed line in FIG. [Figure 8] FIG. 8 is a plan view of the adsorbent structure according to the embodiment. [Figure 9] FIG. 9 is a diagram showing temperature changes in the gas separation adsorption device according to the embodiment and the gas separation adsorption device according to the comparative example. [Figure 10] FIG. 10 is a perspective view showing the configuration of an adsorbent sheet according to another first example of the embodiment. [Figure 11] FIG. 11 is a perspective view showing the configuration of an adsorbent sheet according to a second alternative example of the embodiment. [Figure 12] FIG. 12 is a perspective view showing an example in which the adsorbent structure according to the embodiment is replaced. [Figure 13] FIG. 13 is a side view of the gas separation adsorber according to the first modified example of the embodiment. [Figure 14] FIG. 14 is a perspective view of a gas separation adsorber according to the first modified example of the embodiment. [Figure 15] FIG. 15 is an enlarged view of the area XV enclosed by the dashed line in FIG. [Figure 16] FIG. 16 is a side view of a gas separation adsorber according to the second modification of the embodiment. [Figure 17] FIG. 17 is a perspective view of a gas separation adsorber according to the second modification of the embodiment. [Figure 18] FIG. 18 is a perspective view of five flat tubes and one pipe provided in a gas separation adsorber according to the third modification of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments will be described with reference to the drawings. Note that the embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, component placement and connection configurations, processes, process sequences, etc. shown in the following embodiments are merely examples and are not intended to limit the present invention. Furthermore, among the components in the following embodiments, components not recited in independent claims will be described as optional components.

[0013] It should be noted that the drawings are schematic diagrams and are not necessarily strict illustrations. In addition, in the drawings, substantially the same components are denoted by the same reference numerals, and duplicated explanations may be omitted or simplified.

[0014] In the present specification and drawings, the x-axis, y-axis, and z-axis represent the three axes of a three-dimensional Cartesian coordinate system. In the embodiment, the main surface of the metal sheet is parallel to the xy plane, and the direction perpendicular to the xy plane is the z-axis direction. In the embodiments described below, the positive direction of the z-axis may be referred to as "upward," and the negative direction of the z-axis may be referred to as "downward."

[0015] (Embodiment) [composition] First, the configuration of a gas separation adsorber 100 according to this embodiment will be described. Fig. 1 is a perspective view of the gas separation adsorber 100 according to this embodiment. Fig. 2 is a side view of the gas separation adsorber 100 according to this embodiment.

[0016] The gas separation adsorber 100 is a device for treating a target gas (target gas). The gas separation adsorber 100 according to this embodiment performs adsorption and desorption of the target gas as an example of the treatment of the target gas. However, the treatment of the target gas performed by the gas separation adsorber 100 may be other treatments.

[0017] The type of target gas may be any type, such as oxygen and carbon dioxide. In this embodiment, carbon dioxide gas is used as the target gas. The gas separation adsorber 100 according to this embodiment adsorbs the target gas from air containing carbon dioxide gas, which is the target gas, and desorbs the adsorbed target gas. As a result, the gas separation adsorber 100 can concentrate the target gas.

[0018] As an example, the gas separation adsorber 100 is installed in a factory or the like that emits air containing carbon dioxide gas, and the air is supplied to the gas separation adsorber 100. By utilizing waste heat from the factory, the gas separation adsorber 100 adsorbs the carbon dioxide gas contained in the air. This reduces the concentration of carbon dioxide gas contained in the air emitted from the factory, thereby reducing the burden on the environment. The gas separation adsorber 100 can then desorb and concentrate the adsorbed carbon dioxide, and further adsorb the target gas again.

[0019] The gas separation adsorber 100 may be installed not in a factory but in a mobile body that emits carbon dioxide gas, such as a vehicle or a ship.

[0020] As shown in FIG. 1, the gas separation adsorber 100 includes five metal plates 10, two pipes 20, and four adsorbent structures 30.

[0021] First, the two pipes 20 provided in the gas separation adsorber 100 will be described.

[0022] The two pipes 20 each have the same configuration.

[0023] The pipe 20 is a member made of a metal material, more specifically, a member made of a metal material with high thermal conductivity. The metal material making up the pipe 20 may be any material with high thermal conductivity, for example, a thermal conductivity of 100 W / (m·K) or more, such as copper or aluminum. In this embodiment, the material making up the pipe 20 is copper. As shown in FIG. 2, the pipe 20 is a U-shaped pipe having a U-shape, but is not limited to this.

[0024] A fluid flows through the pipe 20 to control the temperature of the gas separation adsorber 100. For example, water flows through the pipe 20, and hot water is flowed through the pipe 20 to increase the temperature of the gas separation adsorber 100, or cold water is flowed through the pipe 20 to decrease the temperature of the gas separation adsorber 100.

[0025] The pipes 20 are arranged so as to be thermally connected to the five metal plates 10. That is, the two pipes 20 and the five metal plates 10 are arranged so that the temperature of the five metal plates 10 can be raised or lowered by flowing hot or cold water through each of the two pipes 20.

[0026] Next, the five metal plates 10 will be described.

[0027] The five metal plates 10 each have the same configuration.

[0028] The metal plate 10 is a member made of a metal material. More specifically, the metal plate 10 is a member made of a metal material with high thermal conductivity. The metal material making up the metal plate 10 may be any material with high thermal conductivity, for example, a thermal conductivity of 100 W / (m·K) or more, and may be, for example, copper or aluminum. In this embodiment, the material making up the metal plate 10 is copper.

[0029] The metal plate 10 is a member having a flat plate shape. The two main surfaces of the metal plate 10 are planes parallel to the zy plane.

[0030] Four openings are provided in the metal plate 10, and one pipe 20 is inserted through two of the four openings, and another pipe 20 is inserted through the other two of the four openings. At the locations where the pipes 20 are inserted (the opening locations of the metal plate 10), the pipes 20 and the metal plate 10 are connected by, for example, welding so as to be thermally connected.

[0031] The five metal plates 10 are arranged parallel to and spaced apart from one another. When one main surface of the metal plates 10 is viewed in plan, the five metal plates 10 are arranged so as to overlap one another.

[0032] One adsorbent structure 30 is inserted and arranged in the space between two adjacent metal plates 10 out of the five metal plates 10. In this embodiment, since five metal plates 10 are provided, there are four such spaces, and an adsorbent structure 30 is arranged in each of the four such spaces.

[0033] Next, a description will be given of the four adsorbent structures 30. Each of the four adsorbent structures 30 has the same configuration.

[0034] The adsorbent structure 30 is a member that is supplied with carbon dioxide gas, which is a target gas, and that adsorbs and desorbs the carbon dioxide gas. The adsorbent structure 30 adsorbs and desorbs the target gas, carbon dioxide gas, using a temperature swing adsorption process.

[0035] In this embodiment, the adsorbent structure 30 adsorbs carbon dioxide gas at low temperatures and desorbs the adsorbed carbon dioxide gas at high temperatures. The carbon dioxide gas is desorbed while a purge gas is supplied to the adsorbent structure 30, thereby concentrating the carbon dioxide gas.

[0036] The structure of the adsorbent structure 30 will now be described.

[0037] FIG. 3 is a perspective view showing the configuration of an adsorbent structure 30 according to this embodiment.

[0038] The adsorbent structure 30 is a structure including a metal sheet 31 and an adsorbent sheet 32. More specifically, the adsorbent structure 30 includes a plurality of metal sheets 31 and a plurality of adsorbent sheets 32.

[0039] FIG. 4 is a perspective view showing the configuration of a metal sheet 31 according to this embodiment.

[0040] The metal sheet 31 is a sheet-like member having two main surfaces (upper and lower surfaces). The two main surfaces are flat planes parallel to each other. The two main surfaces of the metal sheet 31 are planes parallel to the xy plane. Therefore, the metal sheet 31 and the metal plate 10 are orthogonal to each other, and more specifically, the main surfaces of the metal sheet 31 and the metal plate 10 are orthogonal to each other. The metal sheet 31 is a flexible sheet member having flexibility, but is not limited to this and may be a rigid sheet member having no flexibility.

[0041] When the shape of the metal sheet 31 as seen from one main surface direction is taken as the planar shape, the planar shape of the metal sheet 31 according to this embodiment is rectangular, but is not limited to this.

[0042] The adsorbent structure 30 is provided with a plurality of metal sheets 31, each of which has the same size.

[0043] The metal sheet 31 is a member made of a metal material, more specifically, a member made of a metal material with high thermal conductivity. Metal foil can be used as the metal sheet 31. The metal material making up the metal sheet 31 may be any material with high thermal conductivity, for example, a thermal conductivity of 100 W / (m·K) or more, and may be, for example, copper or aluminum. In this embodiment, the material making up the metal sheet 31 is aluminum, and the metal sheet 31 is made of aluminum foil.

[0044] FIG. 5 is a perspective view showing the structure of the adsorbent sheet 32 ​​according to this embodiment.

[0045] The adsorbent sheet 32 ​​is a sheet-like member having two main surfaces (upper and lower surfaces). The adsorbent sheet 32 ​​is a flexible sheet member, but is not limited to this and may be a rigid sheet member that is not flexible. The shape of the adsorbent sheet 32 ​​in a plan view is rectangular, but is not limited to this. Note that the size of the adsorbent sheet 32 ​​in a plan view is smaller than the size of the metal sheet 31.

[0046] The adsorbent structure 30 is provided with a plurality of adsorbent sheets 32, each of which has the same size.

[0047] The adsorbent sheet 32 ​​is a sheet member having gas adsorption properties. The adsorbent sheet 32 ​​adsorbs a target gas. The adsorbent sheet 32 ​​is a member composed of an adsorbent material and a binder material. The adsorbent sheet 32 ​​has the adsorbent material, so that the adsorbent sheet 32 ​​can have gas adsorption properties. In the adsorbent sheet 32, the adsorbent material is dispersed and arranged in the binder material, more specifically, the adsorbent material is uniformly dispersed and arranged in the binder material.

[0048] The adsorption material may be any material capable of adsorbing the target gas. When the target gas is carbon dioxide, zeolite or MOF (metal-organic framework) may be used as the adsorption material. An appropriate material may be selected depending on the target gas. When the target gas is oxygen, activated carbon may be selected as the adsorption material.

[0049] The adsorbent sheet 32 ​​contains an adsorbent material, and therefore the adsorbent structure 30 including this adsorbent sheet 32 ​​can adsorb and desorb carbon dioxide gas, which is the target gas.

[0050] The binder material may be any material that can form a support for the adsorbent material. The binder material can also be considered a material that supports the adsorbent material. Examples of binder materials include paper, glass fiber, nonwoven fabric, and resin.

[0051] In this embodiment, fine particle zeolite, which is the adsorption material, is dispersed in a binder material.

[0052] Next, the shape of the adsorbent sheet 32 ​​will be described.

[0053] FIG. 6 is a side view of the adsorbent sheet 32 ​​according to this embodiment.

[0054] The adsorbent sheet 32 ​​has a serpentine shape. More specifically, in the side view shown in Fig. 6, i.e., when viewed from the side (as viewed from the y-axis direction), the adsorbent sheet 32 ​​has a serpentine shape. The serpentine shape of the adsorbent sheet 32 ​​extends in a serpentine manner toward the x-axis direction, i.e., the serpentine direction is the x-axis direction. The adsorbent sheet 32 ​​is also a member that extends in the y-axis direction while maintaining its serpentine shape in side view.

[0055] Furthermore, in this embodiment, the adsorbent sheet 32 ​​has a corrugated shape as a meandering shape. In other words, the adsorbent sheet 32 ​​meanders in an S-shape in side view. Therefore, as shown in Fig. 6, the adsorbent sheet 32 ​​has a corrugated shape.

[0056] Furthermore, since the adsorbent sheet 32 ​​has a corrugated shape, the adsorbent sheet 32 ​​has a plurality of curved portions 321 formed to bend smoothly in a curved shape in a side view. As shown in Fig. 5, each of the plurality of curved portions 321 extends in a direction (y-axis direction) perpendicular to the meandering direction (x-axis direction).

[0057] The adsorbent structure 30 will be described again with reference to FIG.

[0058] 3, in the adsorbent structure 30, a plurality of metal sheets 31 and a plurality of adsorbent sheets 32 are stacked. The plurality of metal sheets 31 are stacked so as to overlap one another, and the plurality of adsorbent sheets 32 are stacked so as to overlap one another. In other words, in a plan view, the plurality of metal sheets 31 are stacked without any misalignment, and the plurality of adsorbent sheets 32 are stacked without any misalignment.

[0059] More specifically, the plurality of metal sheets 31 and the plurality of adsorbent sheets 32 are alternately stacked. For ease of identification, the following description will be given using metal sheet 31a, metal sheet 31b, metal sheet 31c, and metal sheet 31d included in the plurality of metal sheets 31, and adsorbent sheet 32a, adsorbent sheet 32b, adsorbent sheet 32c, and adsorbent sheet 32d included in the plurality of adsorbent sheets 32.

[0060] 3, one adsorbent sheet 32a is stacked above one metal sheet 31a, and one metal sheet 31b is stacked above one adsorbent sheet 32a. Furthermore, one adsorbent sheet 32b is stacked above one metal sheet 31b, and one metal sheet 31c is stacked above one adsorbent sheet 32b. Furthermore, one adsorbent sheet 32c is stacked above one metal sheet 31c, and one metal sheet 31d is stacked above one adsorbent sheet 32c. Finally, one adsorbent sheet 32d is stacked above one metal sheet 31d.

[0061] In this way, the plurality of metal sheets 31 and the plurality of adsorbent sheets 32 are stacked alternately. In the adsorbent structure 30, the metal sheets 31 can be said to correspond to liners.

[0062] Furthermore, one metal sheet 31 and one adsorbent sheet 32 ​​may be bonded together with an adhesive (not shown) or the like. For example, after adhesive is applied to the vertex of curved portion 321 of adsorbent sheet 32, one metal sheet 31 and one adsorbent sheet 32 ​​may be stacked and bonded together.

[0063] In this embodiment, the adsorbent sheet 32 ​​has a serpentine shape, more specifically a corrugated shape, so that a plurality of gaps 40 are provided between one metal sheet 31 and one adsorbent sheet 32 ​​laminated on the metal sheet 31.

[0064] FIG. 7 is an enlarged view of an area VII enclosed by a dashed line in FIG.

[0065] As described above, the adsorbent sheet 32 ​​extends in the y-axis direction while maintaining its serpentine shape in side view, i.e., in this embodiment, each of the curved portions 321 extends in the y-axis direction, and therefore each of the voids 40 also extends in the y-axis direction.

[0066] Furthermore, the direction in which the air containing carbon dioxide gas is supplied to the adsorbent structure 30 will be described.

[0067] 1 and 2, the air is supplied to the adsorbent structure 30 along the y-axis direction. The air flows through the plurality of voids 40, and carbon dioxide gas, which is the target gas contained in the air, is treated.

[0068] In this case, the direction in which the air is supplied and the direction in which the plurality of voids 40 extend are the y-axis direction, which coincides with each other. This reduces the pressure loss of the air, and allows the target gas to be adsorbed more efficiently.

[0069] Furthermore, the adsorbent sheet 32 ​​extends in the y-axis direction while maintaining its serpentine shape in side view, and more specifically, each of the multiple curved portions 321 extends in the y-axis direction. Therefore, compared to a hypothetical case where a gap is provided between a flat adsorbent sheet that does not have a serpentine shape and the metal sheet 31 and the air flows through this gap as a flow path, the contact area between the air flowing through the gap 40 in this embodiment and the adsorbent sheet 32 ​​is increased. As a result, in this embodiment, carbon dioxide gas contained in the air is more easily adsorbed by the adsorbent sheet 32, which means that the target gas is more efficiently adsorbed.

[0070] Furthermore, the direction in which the gas is discharged after the target gas is adsorbed is the y-axis direction, which is the same as the direction in which the air containing carbon dioxide gas is supplied.

[0071] Furthermore, the positional relationship between the adsorbent structure 30 and the metal plate 10 will be described.

[0072] The adsorbent structure 30 is arranged so as to be in contact with two metal plates 10. More specifically, the adsorbent structure 30 is arranged so as to be thermally connected to two metal plates 10. The two pipes 20 are arranged so as to be thermally connected to five metal plates 10.

[0073] The metal plates 10 and the pipes 20 are both made of a metal material with high thermal conductivity, and the adsorbent structure 30 has a metal sheet 31 made of a metal material with high thermal conductivity. Therefore, by flowing hot or cold water through each of the two pipes 20, the temperature of the five metal plates 10 and the four adsorbent structures 30 can be rapidly increased or decreased. In other words, the gas separation adsorber 100 according to this embodiment can easily rapidly increase or decrease the temperature.

[0074] Here, consider a case where the gas separation adsorber 100 is installed in a factory and the temperature of the gas separation adsorber 100 is increased or decreased by utilizing waste heat from the factory. Factory waste heat is generally low in temperature and has a low energy density. However, because the gas separation adsorber 100 according to this embodiment has the above-described configuration, it can easily rapidly increase or decrease the temperature even when such waste heat with a low energy density is provided.

[0075] When the temperature swing adsorption process is used to adsorb and desorb a target gas, the gas can be adsorbed at a low temperature and desorbed at a high temperature, thereby enabling efficient adsorption and desorption of the target gas. The gas separation adsorber 100 according to this embodiment can easily rapidly increase or decrease its temperature, meaning that the gas separation adsorber 100 can quickly reach a low temperature or high temperature. Therefore, the gas separation adsorber 100 according to this embodiment can efficiently adsorb and desorb a target gas.

[0076] The honeycomb rotor (adsorbent structure) disclosed in Patent Document 1 is made of a non-flammable sheet such as ceramic fiber paper or glass fiber paper. In other words, the honeycomb rotor is not made of a material with high thermal conductivity, and the thermal conductivity of the honeycomb rotor itself is low. Even if such a honeycomb rotor is installed in a factory and waste heat from the factory is utilized, the low thermal conductivity of the honeycomb rotor itself makes it difficult to rapidly increase or decrease the temperature, making it difficult for the honeycomb rotor to efficiently adsorb and desorb the target gas.

[0077] In summary, the gas separation adsorber 100 having the above configuration can adsorb and desorb the target gas more efficiently than the honeycomb rotor disclosed in Patent Document 1.

[0078] Further, the metal sheet 31 has an area 311 that does not overlap with the adsorbent sheet 32 ​​in plan view.

[0079] Fig. 8 is a plan view of the adsorbent structure 30 according to this embodiment. In Fig. 8, the two metal plates 10 are shown by dashed lines to show the positional relationship between the adsorbent structure 30 and the two metal plates 10.

[0080] The metal sheet 31 has two regions 311. In the present embodiment, a plurality of metal sheets 31 are provided, and each of the plurality of metal sheets 31 has two regions 311. As described above, in plan view, the size of the adsorbent sheet 32 ​​is smaller than the size of the metal sheet 31, and therefore the region of the metal sheet 31 that is not covered by the adsorbent sheet 32 ​​corresponds to the region 311.

[0081] The two regions 311 have a rectangular shape extending in the y-axis direction. One region 311 is located on the most positive side of the x-axis in the metal sheet 31, and the other region 311 is located on the most negative side of the x-axis in the metal sheet 31. In other words, the two regions 311 can be said to be regions that protrude in the x-axis direction in the metal sheet 31 or regions that protrude from the adsorbent sheet 32 ​​in a plan view.

[0082] In this embodiment, the adsorbent structure 30 is arranged so as to be thermally connected to the two metal plates 10. Since the metal sheet 31 has two regions 311, each of the two regions 311 can be arranged so as to be in contact with the metal plates 10, and therefore, thermal conduction between the metal sheet 31 and the two metal plates 10 can easily occur. As a result, the gas separation adsorber 100 according to this embodiment can more easily rapidly increase or decrease the temperature.

[0083] It is also possible to provide only one of the two regions 311 and not the other. In addition, as shown in Figure 8, in the adsorbent structure 30, the side surfaces of the metal sheet 31 and the adsorbent sheet 32 ​​are flush with each other on the positive and negative sides of the y-axis.

[0084] [Experimental Results] Here, the results of an experiment comparing the gas separation adsorber 100 according to the present embodiment with a gas separation adsorber according to a comparative example will be shown.

[0085] FIG. 9 is a diagram showing temperature changes in the gas separation adsorber 100 according to the present embodiment and a gas separation adsorber according to a comparative example.

[0086] In the gas separation adsorber 100 according to the present embodiment, the adsorbent structure 30 comprises a plurality of metal sheets 31. The gas separation adsorber according to the comparative example has the same configuration as the gas separation adsorber 100, except that it comprises a plurality of liner sheets instead of the plurality of metal sheets 31. Each of the plurality of liner sheets is made of the same material as the material constituting the adsorbent sheet 32, and therefore has lower thermal conductivity than the metal sheet 31 according to the present embodiment.

[0087] Here, in the gas separation adsorber 100, measurements were made of the temperature change in the adsorbent structure 30 when cold water at 20°C was first flowed through the two pipes 20, and then hot water at 80°C was flowed through the two pipes 20. Note that similar measurements were also made in the gas separation adsorber according to the comparative example.

[0088] In FIG. 9, the temperature change of the gas separation adsorber 100 according to this embodiment is indicated by open circles, and the temperature change of the gas separation adsorber according to the comparative example is indicated by open triangles.

[0089] 9, compared to the gas separation adsorber according to the comparative example, the gas separation adsorber 100 can rapidly increase or decrease the temperature of the adsorbent structure 30. Therefore, the gas separation adsorber 100 can efficiently adsorb and desorb the target gas.

[0090] In the present embodiment, the adsorbent sheet 32 ​​has a corrugated shape as a meandering shape, but is not limited to this and may have another meandering shape. An adsorbent sheet 32e according to another first example and an adsorbent sheet 32f according to another second example will be described below with reference to Figures 10 and 11.

[0091] Fig. 10 is a perspective view showing the configuration of an adsorbent sheet 32e according to another first example of the present embodiment. Fig. 11 is a perspective view showing the configuration of an adsorbent sheet 32f according to another second example of the present embodiment.

[0092] The adsorbent sheets 32e and 32f have a serpentine shape that is not curved but bent in side view, more specifically, bent at right angles in side view. Furthermore, the shape of the gaps corresponding to the gaps 40 in the adsorbent sheet 32e is rectangular in side view, and the shape of the gaps corresponding to the gaps 40 in the adsorbent sheet 32f is triangular in side view. Furthermore, the adsorbent sheet 32f has an accordion-folded shape in side view.

[0093] Even when the adsorbent sheets 32e and 32f are used instead of the adsorbent sheet 32, the gas separation adsorber 100 can efficiently adsorb and desorb the target gas.

[0094] Furthermore, the adsorbent structure 30 according to this embodiment may be damaged during use. Figure 12 is a perspective view showing an example in which the adsorbent structure 30 according to this embodiment is replaced. As shown in Figure 12, even if, for example, one of the multiple (five) adsorbent structures 30 is damaged, it is possible to replace just that one adsorbent structure 30.

[0095] [Variation 1] The following describes Modification 1 of the embodiment. The following description focuses on the differences from the embodiment, and the description of the commonalities will be omitted or simplified.

[0096] Fig. 13 is a side view of a gas separation adsorber 1100 according to Modification 1 of the present embodiment. Fig. 14 is a perspective view of the gas separation adsorber 1100 according to Modification 1 of the present embodiment. The gas separation adsorber 1100 includes two cylindrical members 110 and one adsorbent structure 130.

[0097] 13 and 14 also show the direction in which air containing carbon dioxide gas is supplied and the direction in which the gas is discharged after the target gas has been adsorbed.

[0098] The two cylindrical members 110 are a first cylindrical member 110a and a second cylindrical member 110b. Each of the two cylindrical members 110 has a cylindrical shape, more specifically, a cylindrical shape without a bottom.

[0099] 13 and 14, the cylindrical axes A1 of the two cylindrical members 110 overlap. Each of the two cylindrical members 110 extends along the cylindrical axis A1 and can be said to have a tubular shape. The length of each of the two cylindrical members 110 in the direction along the cylindrical axis A1 is, for example, not less than several tens of centimeters and not more than several meters, but is not limited to this.

[0100] Each of the two cylindrical members 110 may be made of any material, but in this example, they are made of a metal material. More specifically, the two cylindrical members 110 are made of a metal material with high thermal conductivity. The metal material making up the two cylindrical members 110 may be any material with high thermal conductivity, for example, a thermal conductivity of 100 W / (m·K) or higher, and may be, for example, copper or aluminum. In this modification, the material making up the two cylindrical members 110 is copper.

[0101] The second cylindrical member 110b is smaller than the first cylindrical member 110a. More specifically, as shown in Fig. 13, the radius of the cylindrical shape of the second cylindrical member 110b is smaller than the radius of the cylindrical shape of the first cylindrical member 110a in a side view. The radius (inner diameter) of the cylindrical shape of the second cylindrical member 110b is, for example, several mm or more and several cm or less, and the radius (inner diameter) of the cylindrical shape of the first cylindrical member 110a is, for example, several cm or more and several tens of cm or less, but is not limited to these.

[0102] The second cylindrical member 110b is disposed inside the cylindrical shape of the first cylindrical member 110a. The larger first cylindrical member 110a is disposed away from the cylindrical axis A1, and the smaller second cylindrical member 110b is disposed closer to the cylindrical axis A1. The first cylindrical member 110a and the second cylindrical member 110b are disposed at a distance from each other.

[0103] 14, the gas separation adsorption device 1100 has an elongated shape, and more specifically, extends elongatedly in the direction in which air containing carbon dioxide gas is supplied. As described above, the second cylindrical member 110b is disposed inside the first cylindrical member 110a, and therefore the first cylindrical member 110a and the second cylindrical member 110b form a double pipe.

[0104] The adsorbent structure 130 is disposed inside the cylindrical shape of the first cylindrical member 110a and in contact with the first cylindrical member 110a. More specifically, the adsorbent structure 130 is disposed between the first cylindrical member 110a and the second cylindrical member 110b. That is, in this modification, as in the first embodiment, the adsorbent structure 130 is provided between the two cylindrical members 110, i.e., between the first cylindrical member 110a and the second cylindrical member 110b. Furthermore, the first cylindrical member 110a and the second cylindrical member 110b are disposed so as to be thermally connected to the adsorbent structure 130.

[0105] While the adsorbent structure 30 according to the first embodiment has a rectangular parallelepiped shape, the adsorbent structure 130 according to this modification has a cylindrical shape, more specifically, a bottomless cylindrical shape. The adsorbent structure 130 extends along a cylindrical axis A1 and can also be said to have a tubular shape. The length of the adsorbent structure 130 along the cylindrical axis A1 is preferably the same as that of the first cylindrical member 110a and the second cylindrical member 110b.

[0106] Furthermore, the cylindrical axis of the adsorbent structure 130 overlaps with the cylindrical axis A1 of each of the two cylindrical members 110.

[0107] The inner surface (surface closer to the cylindrical axis A1) of the bottomless cylindrical shape of the adsorbent structure 130 contacts the second cylindrical member 110b, and the outer surface (surface farther from the cylindrical axis A1) of the bottomless cylindrical shape of the adsorbent structure 130 contacts the first cylindrical member 110a.

[0108] The adsorbent structure 130 has a plurality of metal sheets 131 and a plurality of adsorbent sheets 132. In this modification, each of the plurality of metal sheets 131 and each of the plurality of adsorbent sheets 132 are arranged to extend radially from the cylindrical axis A1. The plurality of metal sheets 131 and the plurality of adsorbent sheets 132 have the same configuration as the plurality of metal sheets 31 and the plurality of adsorbent sheets 32 according to the first embodiment, except that they have different shapes.

[0109] Furthermore, the positional relationship between the metal sheet 131 and the adsorbent sheet 132 will be described with reference to FIG.

[0110] Fig. 15 is an enlarged view of area XV surrounded by a dashed line in Fig. 13. As in the first embodiment, a plurality of metal sheets 131 and a plurality of adsorbent sheets 132 are stacked. More specifically, the plurality of metal sheets 131 and the plurality of adsorbent sheets 132 are stacked so that they each extend radially from the cylindrical axis A1. Furthermore, the plurality of metal sheets 131 and the plurality of adsorbent sheets 132 are stacked alternately.

[0111] As in the first embodiment, each of the plurality of adsorbent sheets 132 has a curved portion 1321, and a plurality of gaps 140 are provided between one metal sheet 131 and one adsorbent sheet 132 laminated on the one metal sheet 131. The extension direction of the plurality of gaps 140 coincides with the direction in which air containing carbon dioxide gas is supplied, so that pressure loss of the air is suppressed and the target gas is adsorbed more efficiently.

[0112] In this modification, since the piping 20 is not provided, the first cylindrical member 110a and the second cylindrical member 110b are heated or cooled to control the temperature of the gas separation adsorber 1100. In other words, the adsorbent structure 130 according to this modification is heated or cooled from both the inside (the second cylindrical member 110b side) and the outside (the first cylindrical member 110a side) of the bottomless cylindrical shape.

[0113] In this modification, the entire first cylindrical member 110a is heated or cooled, and the entire second cylindrical member 110b is heated or cooled.

[0114] As described above, the adsorbent structure 130 is arranged so as to be thermally connected to the first cylindrical member 110a and the second cylindrical member 110b. The first cylindrical member 110a and the second cylindrical member 110b are made of a metal material with high thermal conductivity, and the adsorbent structure 130 has a plurality of metal sheets 131 made of a metal material with high thermal conductivity. Therefore, by heating or cooling the first cylindrical member 110a and the second cylindrical member 110b, the temperature of the adsorbent structure 130 can be rapidly increased or decreased. In other words, the gas separation adsorber 1100 according to this modification can easily rapidly increase or decrease its temperature, and can quickly reach a low-temperature or high-temperature state. Therefore, the gas separation adsorber 1100 according to this modification can efficiently adsorb and desorb the target gas.

[0115] In this modification, the plurality of metal sheets 131 are arranged radially and are in contact with both the first cylindrical member 110a and the second cylindrical member 110b. Therefore, when the first cylindrical member 110a and the second cylindrical member 110b are heated or cooled, the gas separation adsorber 1100 can more easily rapidly increase or decrease the temperature.

[0116] [Variation 2] The following describes Modification 2 of the embodiment, focusing on differences from Modification 1, and omitting or simplifying the description of commonalities.

[0117] Fig. 16 is a side view of a gas separation adsorber 2100 according to Modification 2 of the present embodiment. Fig. 17 is a perspective view of the gas separation adsorber 2100 according to Modification 2 of the present embodiment. The gas separation adsorber 2100 includes a first cylindrical member 210a, a third cylindrical member 210c, and an adsorbent structure 230.

[0118] The gas separation adsorber 2100 according to this modification is a rotor-type device having a disk shape. The gas separation adsorber 2100 rotates around an axis A2 passing through the center point of the disk shape.

[0119] 16 and 17 also show the rotation direction of the gas separation adsorber 2100, the direction in which air containing carbon dioxide gas is supplied, and the direction in which gas is discharged after the target gas has been adsorbed.

[0120] The first cylindrical member 210a and the third cylindrical member 210c each have a cylindrical shape, more specifically, a bottomless cylindrical shape. The cylindrical axes of the first cylindrical member 210a and the third cylindrical member 210c overlap with the axis A2.

[0121] The length of each of the first cylindrical member 210a and the third cylindrical member 210c in the direction along the axis A2 is, for example, at least several centimeters and up to 10-odd centimeters, but is not limited to this.

[0122] The first cylindrical member 210a is a member made of a metal material. More specifically, the first cylindrical member 210a is a member made of a metal material with high thermal conductivity. The metal material making up the first cylindrical member 210a may be a material with high thermal conductivity, for example, a thermal conductivity of 100 W / (m·K) or more, and may be, for example, copper or aluminum. In this modification, the material making up the first cylindrical member 210a is copper.

[0123] The third cylindrical member 210c may be made of any material. Like the first cylindrical member 210a, the third cylindrical member 210c is made of copper, but it may also be made of resin or a metal other than copper, or may be made of a combination of multiple materials.

[0124] The third cylindrical member 210c is smaller than the first cylindrical member 210a. More specifically, as shown in Fig. 16, the radius of the cylindrical shape of the third cylindrical member 210c is smaller than the radius of the cylindrical shape of the first cylindrical member 210a in a side view. The radius (inner diameter) of the cylindrical shape of the first cylindrical member 210a is, for example, several mm or more and several cm or less, and the radius (inner diameter) of the cylindrical shape of the third cylindrical member 210c is, for example, several cm or more and several tens of cm or less, but is not limited to these.

[0125] The third cylindrical member 210c is disposed inside the cylindrical shape of the first cylindrical member 210a. The larger first cylindrical member 210a is disposed away from the axis A2, and the smaller third cylindrical member 210c is disposed closer to the axis A2. The first cylindrical member 210a and the third cylindrical member 210c are disposed spaced apart from each other.

[0126] The adsorbent structure 230 is disposed inside the cylindrical shape of the first cylindrical member 210a and in contact with the first cylindrical member 210a. More specifically, the adsorbent structure 230 is disposed between the first cylindrical member 210a and the third cylindrical member 210c. That is, in this modification, as in the first embodiment, the adsorbent structure 230 is provided between the first cylindrical member 210a and the third cylindrical member 210c. Furthermore, the first cylindrical member 210a and the third cylindrical member 210c are disposed so as to be thermally connected to the adsorbent structure 230.

[0127] While the adsorbent structure 30 according to the first embodiment has a rectangular parallelepiped shape, the shape of the adsorbent structure 230 according to this modification is a circular disk shape with the columnar portion extending along the axis A2 removed (a bottomless cylindrical shape). The cylindrical axis of the bottomless cylindrical shape of the adsorbent structure 230 also overlaps with the axis A2. The length of the adsorbent structure 230 in the direction along the axis A2 is preferably the same as that of the first cylindrical member 210a and the third cylindrical member 210c.

[0128] The inner surface (surface closer to axis A2) of the bottomless cylindrical shape of adsorbent structure 230 contacts third cylindrical member 210c, and the outer surface (surface farther from axis A2) of the bottomless cylindrical shape of adsorbent structure 230 contacts first cylindrical member 210a.

[0129] The adsorbent structure 230 has the same configuration as the adsorbent structure 130 of variant example 1, except that it has multiple metal sheets 231 and multiple adsorbent sheets 232 instead of multiple metal sheets 131 and multiple adsorbent sheets 132.

[0130] The plurality of metal sheets 231 and the plurality of adsorbent sheets 232 have the same configuration as the plurality of metal sheets 131 and the plurality of adsorbent sheets 132 according to Modification 1, except that they differ in length in the direction of axis A2 (direction of cylinder axis A1). Therefore, the plurality of metal sheets 231 and the plurality of adsorbent sheets 232 are stacked so that they each extend radially around axis A2. Furthermore, the plurality of metal sheets 231 and the plurality of adsorbent sheets 232 are stacked alternately.

[0131] A plurality of voids are provided between one metal sheet 231 and one adsorbent sheet 232 laminated on the one metal sheet 231. The direction in which the plurality of voids extend coincides with the direction in which air containing carbon dioxide gas is supplied, so that pressure loss of the air is suppressed, and the target gas is adsorbed more efficiently.

[0132] Furthermore, the temperature control in the gas separation adsorber 2100 according to this modification will be described.

[0133] As shown in Fig. 16, the gas separation adsorber 2100 has a region R1 and a region R2. Region R1 is a semicircular region on the upper side of the page in Fig. 16, which is the circular shape of the gas separation adsorber 2100 in side view, and region R2 is a semicircular region on the lower side of the page in Fig. 16, which is the circular shape of the gas separation adsorber 2100 in side view.

[0134] In this modification, one of the regions R1 and R2 is a region to be heated and the other is a region to be cooled. Here, the region R1 is a region to be cooled and the region R2 is a region to be heated.

[0135] The gas separation adsorber 2100 rotates along a rotational direction around an axis A2. For example, in the state shown in Fig. 16, the region 50 located in the region R1 to be cooled is rotated to a position within the region R2 to be heated.

[0136] In the gas separation adsorption device 2100, the direction in which air containing carbon dioxide gas is supplied and the direction in which the gas after the target gas has been adsorbed are toward the depth of the page, and the direction in which a purge gas containing a low-reactivity gas such as nitrogen is supplied is toward the front of the page. The air containing carbon dioxide gas is supplied to a region R1 to be cooled, and the purge gas is supplied to a region R2 to be heated.

[0137] As a result, carbon dioxide gas, which is the target gas, is adsorbed in the region R1, and the adsorbed carbon dioxide gas is desorbed in the region R2, resulting in separation and concentration of the carbon dioxide gas.

[0138] In this modification, the adsorbent structure 230 is arranged so as to be thermally connected to the first cylindrical member 210a and the third cylindrical member 210c. The first cylindrical member 210a is made of a metal material with high thermal conductivity, and the adsorbent structure 230 has a plurality of metal sheets 231 made of a metal material with high thermal conductivity.

[0139] Therefore, when one region (e.g., region 50) is located in the cooling region (region R1), the region is rapidly cooled, and when one region (e.g., region 50) is located in the heating region (region R2), the region is rapidly heated. That is, the gas separation adsorption device 2100 according to this modification can easily rapidly increase or decrease the temperature, and can quickly reach a low-temperature state or a high-temperature state. Therefore, the gas separation adsorption device 2100 according to this modification can efficiently adsorb and desorb the target gas.

[0140] [Variation 3] The third modification of the embodiment will be described below. The following description will focus on the differences from the embodiment, and the description of the commonalities will be omitted or simplified.

[0141] The gas separation adsorption device of this modified example has the same configuration as the gas separation adsorption device 100 of the embodiment, except that it has five flat tubes 310 instead of five metal plates 10, and one pipe 320 instead of two pipes 20.

[0142] 18 is a perspective view of five flat tubes 310 and one pipe 320 provided in a gas separation adsorber according to Modification 3 of the present embodiment. The gas separation adsorber according to this modification includes five flat tubes 310, one pipe 320, and four adsorbent structures 30 (not shown).

[0143] The pipe 320 has the same configuration as the pipe 20 .

[0144] Each of the five flat tubes 310 has the same configuration.

[0145] The flat tubes 310 are components made of a metal material. More specifically, the flat tubes 310 are components made of a metal material with high thermal conductivity. The metal material making up the flat tubes 310 may be any material with high thermal conductivity, for example, a thermal conductivity of 100 W / (m·K) or higher, such as copper or aluminum. In this embodiment, the material making up the flat tubes 310 is copper.

[0146] The flat tube 310 is a member having a flat plate shape and a through-hole provided in the center. The through-hole extends in the z-axis direction. The two main surfaces of the flat tube 310 are planes parallel to the zy plane.

[0147] The flat tube 310 is connected to one pipe 320, and the fluid flowing in the pipe 320 flows through the through-holes of the flat tube 310. The pipe 320 and the flat tube 310 are connected so as to be thermally connected. Figure 18 shows the flow direction of the fluid (hot water or cold water) for controlling the temperature of the gas separation adsorber.

[0148] The five flat tubes 310 are arranged parallel to and spaced apart from one another. When one main surface of the flat tube 310 is viewed from above, the five flat tubes 310 are arranged so as to overlap one another.

[0149] One adsorbent structure 30 is inserted into the space between two adjacent flat tubes 310 out of the five flat tubes 310. In this embodiment, there are four such spaces because five flat tubes 310 are provided, and an adsorbent structure 30 is disposed in each of the four such spaces.

[0150] Also in this modification, the two main surfaces of the metal sheet 31 of the adsorbent structure 30 are planes parallel to the xy plane, and therefore the metal sheet 31 and the flat tubes 310 are perpendicular to each other.

[0151] Furthermore, although the gas separation adsorber according to this modification includes five flat tubes 310, the number is not limited to this and it is sufficient if two or more flat tubes 310 are included.

[0152] As described above, in this modification, the flat tubes 310 are made of a metal material with high thermal conductivity, and the adsorbent structure 30 has metal sheets 31 made of a metal material with high thermal conductivity. Therefore, for example, when hot or cold water flows through one pipe 320, the hot or cold water also flows through the flat tubes 310. As a result, when the adsorbent structure 30 is heated or cooled, the temperature of the adsorbent structure 30 can be rapidly increased or decreased. In other words, the gas separation adsorber according to this modification can easily rapidly increase or decrease the temperature. In other words, the gas separation adsorber according to this modification can efficiently adsorb and desorb the target gas.

[0153] [Effects, etc.] Invention 1 is an adsorbent structure 30 comprising a metal sheet 31 made of a metal material and a plurality of adsorbent sheets 32 each having a serpentine shape and gas adsorption properties, wherein the metal sheet 31 and the plurality of adsorbent sheets 32 are stacked.

[0154] As a result, as shown in the embodiment, the adsorbent structure 30 has the metal sheet 31 made of a metal material with high thermal conductivity. Therefore, when the adsorbent structure 30 is heated or cooled, for example, by flowing hot water or cold water through each of the two pipes 20, the temperature of the adsorbent structure 30 can be rapidly increased or decreased. In other words, the adsorbent structure 30 according to the embodiment can easily rapidly increase or decrease its temperature.

[0155] When a target gas is adsorbed and desorbed using a temperature swing adsorption process, the gas is adsorbed at a low temperature and desorbed at a high temperature, thereby enabling efficient adsorption and desorption of the target gas. The adsorbent structure 30 according to the embodiment can easily rapidly increase or decrease its temperature, meaning that the gas separation adsorber 100 can quickly reach a low temperature or high temperature. Therefore, the adsorbent structure 30 according to the embodiment can efficiently adsorb and desorb the target gas.

[0156] Invention 2 is the adsorbent structure 30 according to Invention 1, which comprises a plurality of metal sheets 31, and the plurality of metal sheets 31 and the plurality of adsorbent sheets 32 are stacked alternately.

[0157] As a result, as shown in the embodiment, the adsorbent structure 30 has a plurality of metal sheets 31. Therefore, the adsorbent structure 30 according to the embodiment can more easily rapidly increase or decrease the temperature. In other words, the adsorbent structure 30 according to the embodiment can more efficiently adsorb and desorb the target gas.

[0158] Invention 3 is the adsorbent structure 30 according to Invention 1 or 2, in which the adsorbent sheet 32 ​​has a corrugated shape as the meandering shape.

[0159] As a result, as shown in the embodiment, compared to an adsorbent structure using a flat adsorbent sheet that does not have a serpentine shape, the adsorbent structure 30 has a larger contact area between the air containing the target gas and the adsorbent sheet 32. As a result, in the embodiment, the target gas contained in the air is more easily adsorbed by the adsorbent sheet 32, which means that the adsorbent structure 30 can more efficiently adsorb the target gas.

[0160] Invention 4 is the adsorbent structure 30 according to any one of Inventions 1 to 3, wherein, in plan view of the metal sheet 31, the metal sheet 31 has an area 311 that does not overlap with the plurality of adsorbent sheets 32.

[0161] This allows region 311 to be disposed so as to be in contact with, for example, metal plate 10, facilitating thermal conduction between metal sheet 31 and metal plate 10. As a result, adsorbent structure 30 according to the embodiment can more easily rapidly increase or decrease the temperature.

[0162] Invention 5 is a gas separation adsorber 100 comprising an adsorbent structure 30 according to any one of Inventions 1 to 4 and two or more metal plates 10 arranged parallel to each other and each having a planar shape, wherein the adsorbent structure 30 is disposed between the two or more metal plates 10, and the metal sheet 131 and the two or more metal plates 10 are perpendicular to each other.

[0163] As a result, as shown in the embodiment, the metal plate 10 is made of a metal material with high thermal conductivity, and the adsorbent structure 30 has a metal sheet 31 made of a metal material with high thermal conductivity. Therefore, for example, when the adsorbent structure 30 and the metal plate 10 are heated or cooled by flowing hot or cold water through each of the two pipes 20, the temperature of the adsorbent structure 30 can be rapidly increased or decreased. In other words, the gas separation adsorber 100 according to the embodiment can easily rapidly increase or decrease the temperature. In other words, the gas separation adsorber 100 according to the embodiment can efficiently adsorb and desorb the target gas.

[0164] Invention 6 is a gas separation adsorber comprising an adsorbent structure 30 according to any one of Inventions 1 to 4 and two or more flat tubes 310 made of a metal material and arranged parallel to each other, wherein the adsorbent structure 30 is disposed between the two or more flat tubes 310, and the metal sheet and the two or more flat tubes 310 are perpendicular to each other.

[0165] As a result, in Modification 3, the flat tubes 310 are made of a metal material with high thermal conductivity, and the adsorbent structure 30 has metal sheets 31 made of a metal material with high thermal conductivity. Therefore, for example, when hot or cold water flows through one pipe 320, the hot or cold water also flows through the flat tubes 310. As a result, when the adsorbent structure 30 is heated or cooled, the temperature of the adsorbent structure 30 can be rapidly increased or decreased. In other words, the gas separation adsorber according to this modification can easily rapidly increase or decrease the temperature. In other words, the gas separation adsorber according to Modification 3 can efficiently adsorb and desorb the target gas.

[0166] Invention 6 is a gas separation adsorption device 1100 comprising a first cylindrical member 110a having a cylindrical shape, and an adsorbent structure 130 according to any one of Inventions 1 to 4, which is arranged inside the cylindrical shape and in contact with the first cylindrical member 110a.

[0167] As a result, as shown in Modification 1, the adsorbent structure 130 has a plurality of metal sheets 131 made of a metal material with high thermal conductivity. Also, in Modification 1, the first cylindrical member 110a is made of a metal material with high thermal conductivity. In this case, the temperature of the adsorbent structure 130 can be rapidly increased or decreased by heating or cooling the first cylindrical member 110a. That is, the gas separation adsorption device 1100 according to Modification 1 can easily rapidly increase or decrease the temperature, and can quickly reach a low-temperature state or a high-temperature state. Therefore, the gas separation adsorption device 1100 according to Modification 1 can efficiently adsorb and desorb the target gas.

[0168] Invention 7 is a gas separation adsorption device 1100 according to Invention 6, which includes a second cylindrical member 110b having a cylindrical shape, being smaller than the first cylindrical member 110a, and being arranged inside the cylindrical shape of the first cylindrical member 110a, and the adsorbent structure 130 is provided between the first cylindrical member 110a and the second cylindrical member 110b.

[0169] As a result, as shown in Modification 1, the adsorbent structure 130 has a plurality of metal sheets 131 made of a metal material with high thermal conductivity. In Modification 1, the first cylindrical member 110a and the second cylindrical member 110b are made of a metal material with high thermal conductivity. In this case, the temperature of the adsorbent structure 130 can be rapidly increased or decreased by heating or cooling the first cylindrical member 110a and the second cylindrical member 110b. Therefore, the gas separation adsorber 1100 according to Modification 1 can more efficiently adsorb and desorb the target gas.

[0170] (Other embodiments) Although the adsorbent structures and the like according to the embodiments and modifications have been described above, the present invention is not limited to the above-described embodiments and modifications.

[0171] In the above embodiment, the adsorbent sheet 32 ​​has been described as having the adsorbent material uniformly dispersed in the binder material, but the present invention is not limited to this. In other words, the adsorbent material may be unevenly distributed in the binder material.

[0172] For example, the adsorbent material may be unevenly distributed on the surface of the adsorbent sheet 32. That is, the concentration of the adsorbent material may be high on the surface of the adsorbent sheet 32 ​​and low inside the adsorbent sheet 32.

[0173] As another example, a layer containing an adsorbent material may be provided on the surface of the adsorbent sheet 32. For example, a paint containing an adsorbent material may be applied to the surface of a sheet member made of a binder material to form a layer containing the adsorbent material on the surface. In this case, the adsorbent material is present only on the surface of the adsorbent sheet 32, and not inside the adsorbent sheet 32.

[0174] In these cases, the concentration of the adsorbent material on the surface of the adsorbent sheet 32 ​​can be increased, so that the target gas can be adsorbed efficiently.

[0175] In the embodiment, the plurality of metal sheets 31 and the plurality of adsorbent sheets 32 are alternately stacked, but this is not limiting. For example, two or more adsorbent sheets 32 may be arranged in succession above one metal sheet 31. For example, two adsorbent sheets 32a and 32b may be stacked in succession above one metal sheet 31a, and one metal sheet 31b may be stacked above the two adsorbent sheets 32a and 32b. Furthermore, two adsorbent sheets 32c and 32d may be stacked in succession above one metal sheet 31b.

[0176] In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art would think of, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope that does not deviate from the spirit of the present invention. [Industrial Applicability]

[0177] The adsorbent structure according to the present invention can be used for various purposes such as gas separation and concentration. [Explanation of symbols]

[0178] 10 metal plate 20, 320 piping 30, 130, 230 adsorbent structure 31, 31a, 31b, 31c, 31d, 131, 231 Metal sheets 32, 32a, 32b, 32c, 32d, 32e, 32f, 132, 232 Adsorbent sheet 40, 140 void 50, 311, R1, R2 area 100, 1100, 2100 Gas separation adsorber 110 Cylindrical member 110a, 210a First cylindrical member 110b second cylindrical member 210c third cylindrical member 310 Flat Tube 321, 1321 curved section A1 Cylindrical shaft A2 axis

Claims

1. a metal sheet made of a metal material; a plurality of adsorbent sheets each having a serpentine shape and gas adsorbency; The metal sheet and the plurality of adsorbent sheets are stacked. Adsorbent structure.

2. A plurality of the metal sheets are provided, The plurality of metal sheets and the plurality of adsorbent sheets are alternately stacked. The adsorbent structure of claim 1 .

3. The adsorbent sheet has a corrugated shape as a meandering shape. The adsorbent structure of claim 1 .

4. In a plan view of the metal sheet, the metal sheet has an area that does not overlap with the plurality of adsorbent sheets. The adsorbent structure of claim 1 .

5. The adsorbent structure according to any one of claims 1 to 4, two or more metal plates arranged parallel to each other, each having a planar shape; the adsorbent structure is disposed between the two or more metal plates; The metal sheet and the two or more metal plates are perpendicular to each other. Gas separation adsorber.

6. The adsorbent structure according to any one of claims 1 to 4, two or more flat tubes arranged parallel to each other and made of a metal material; the adsorbent structure is disposed between the two or more flat tubes; The metal sheet and the two or more flat tubes are perpendicular to each other. Gas separation adsorber.

7. a first cylindrical member having a cylindrical shape; and the adsorbent structure according to any one of claims 1 to 4, which is disposed inside the cylindrical shape and in contact with the first cylindrical member. Gas separation adsorber.

8. a second cylindrical member having a cylindrical shape, smaller than the first cylindrical member, and disposed inside the cylindrical shape of the first cylindrical member; The adsorbent structure is provided between the first cylindrical member and the second cylindrical member. The gas separation adsorber according to claim 7.

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