Gas recovery device

Abstract

A gas recovery device according to the present disclosure comprises: an adsorbent that adsorbs a target gas; an adsorbent container that is air permeable and can accommodate the adsorbent; an inclined member, provided inside the adsorbent container, for moving the adsorbent; and a uniforming member for making the wind speed distribution inside the adsorbent container uniform.

Description

Gas Recovery Device

[0001] The present disclosure relates to a gas recovery device.

[0002] Patent Document 1 discloses an apparatus in which a moving bed of adsorbent that adsorbs harmful components is provided in a flow path of a gas containing harmful components, and the harmful components in the gas are adsorbed by moving the adsorbent on the moving bed.

[0003] Japanese Patent Application Publication No. 11-169646

[0004] In an adsorbent container, if the gaps between the adsorbents are large, a large amount of air flows through the gaps, reducing the flow rate of the mixed gas containing the target gas passing through the adsorbent. As a result, the amount of the target gas adsorbed by the adsorbent decreases, and the target gas recovery efficiency decreases. For example, when the mixed gas is air and the target gas is carbon dioxide, the concentration of carbon dioxide contained in the air is low, so it is necessary to improve the carbon dioxide recovery efficiency by the adsorbent.

[0005] In view of the above circumstances, an object of the present disclosure is to provide a gas recovery device that can improve the recovery efficiency of a target gas.

[0006] One aspect of the gas recovery device according to the present disclosure includes an adsorbent that adsorbs a target gas, an adsorbent container that is breathable and capable of containing the adsorbent, an inclined member that is provided inside the adsorbent container for moving the adsorbent, and a uniforming member that uniforms the wind speed distribution inside the adsorbent container.

[0007] According to the present disclosure, it is possible to provide a gas recovery device that can improve the recovery efficiency of a target gas.

[0008] 1 is a block diagram of a gas recovery device according to embodiment 1. FIG. 2 is a perspective view of an adsorption member according to embodiment 1. FIG. 3 is a schematic diagram of a gas recovery device according to embodiment 1. FIG. 4 is a schematic diagram of an adsorption unit according to embodiment 1. FIG. 5 is a schematic diagram of a gas recovery device according to embodiment 2. FIG. 6 is a schematic diagram of an adsorption unit according to embodiment 2. FIG. 7 is a schematic diagram of a gas recovery device according to embodiment 3. FIG. 8 is a schematic diagram of an adsorption unit according to embodiment 3.

[0009] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the scope of the present disclosure is not limited to the following embodiments and can be modified as desired within the scope of the technical concept of the present disclosure.

[0010] Embodiment 1. Fig. 1 is a block diagram of a gas recovery device 1 according to embodiment 1. The gas recovery device 1 recovers carbon dioxide (target gas) from air (mixed gas containing the target gas). The gas recovery device 1 is installed, for example, on the roof of a building (for example, a building or an apartment building). However, the installation location of the gas recovery device 1 is not limited to this. The gas recovery device 1 may also be installed in an empty lot next to a building, in the courtyard of an apartment building, in the desert, etc. The gas recovery device 1 may also be installed indoors.

[0011] The gas recovery device 1 includes an adsorbent 10 (see FIG. 2 ), a blower 20, an adsorption unit 30, a separation unit 50, and a storage unit 60. The adsorbent 10 is accommodated in the adsorption unit 30.

[0012] FIG. 2 is a perspective view of the adsorbent 10. The adsorbent 10 contains a material capable of adsorbing carbon dioxide. Examples of materials capable of adsorbing carbon dioxide include amine, zeolite, silica gel, diatomaceous earth, alumina, and activated carbon. A plurality of materials may be selected from the above, or a material other than the above may be used. The adsorbent 10 is made of a porous material. The adsorbent 10 has a cylindrical shape. The adsorbent 10 is a honeycomb material. The adsorbent 10 may be in a granular shape (for example, a bead shape (spherical) or a pellet shape (cylindrical)).

[0013] In the following description, the vertical direction is referred to as the Z direction, a direction perpendicular to the Z direction is referred to as the X direction, and a direction perpendicular to the X and Z directions is referred to as the Y direction.

[0014] The blower unit 20 has a fan (not shown) that generates an airflow. As shown in FIG. 3 , the blower unit 20 has an air intake 21 through which air is taken in from the outside by driving the fan, and an air outlet 22 through which the air is discharged to the outside. The blower unit 20 is, for example, an outdoor unit or an indoor unit of an air conditioning system, or a ventilation fan. In the illustrated example, the air intake 21 and the air outlet 22 face each other in the X direction, and air flows in the blower unit 20 in the X direction. However, the flow direction of the airflow in the blower unit 20 is not limited to this. For example, the air outlet 22 may be provided at the top of the blower unit 20, and the air taken in through the air intake 21 may be discharged upward. Furthermore, the driving source of the blower unit 20 may be any device capable of blowing air and is not limited to a fan.

[0015] As shown in FIGS. 3 and 4, the adsorption section 30 includes an adsorbent container 31, a plurality of first inclined members 33 (inclined members), and a plurality of second inclined members 34 (uniform members).

[0016] The adsorbent container 31 is installed outside the blower 20. The adsorbent container 31 is installed to face the air inlet 21 of the blower 20. The adsorbent container 31 may also be installed to face the air outlet 22 of the blower 20. The adsorbent container 31 accommodates a plurality of adsorbents 10. The adsorbent container 31 is breathable. Specifically, the adsorbent container 31 is provided with an inlet 31a through which air flows into the internal space of the adsorbent container 31, and an outlet 31b through which air flows out of the internal space of the adsorbent container 31. The inlet 31a and the outlet 31b are arranged to face each other in the X direction. The outlet 31b is also arranged to face the air inlet 21. When the fan of the blower 20 is driven, air flows through the internal space of the adsorbent container 31 in the X direction from the inlet 31a to the outlet 31b. That is, the flow direction of the air flowing through the adsorbent container 31 is the X direction.

[0017] A plurality of first inclined members 33 and a plurality of second inclined members 34 are provided inside the adsorbent container 31. The first inclined members 33 and the second inclined members 34 are arranged side by side in the X direction (the flow direction of the airflow passing through the adsorbent container 31). For example, the adsorbent container 31 is provided with a breathable partition plate 32, which divides the internal space of the adsorbent container 31 into two spaces S1 and S2 in the X direction. The plurality of first inclined members 33 are arranged in one space S1, and the plurality of second inclined members 34 are arranged in the other space S2. Note that the adsorbent container 31 may be configured with two containers, thereby dividing the internal space of the adsorbent container 31 into two spaces S1 and S2. If it is possible to arrange the first inclined members 33 and the second inclined members 34 side by side in the X direction inside the adsorbent container 31, the partition plate 32 may not be provided, and the internal space of the adsorbent container 31 may not be divided.

[0018] The adsorbent container 31 includes a storage section 41 , an adsorption section main body 42 , and a recovery section 43 .

[0019] The adsorbent 10 is stored in the storage unit 41. The storage unit 41 has an inclined bottom plate 41a. An opening 41b is provided in the inclined bottom plate 41a. The storage unit 41 is in communication with the adsorption unit main body 42 via the opening 41b. The storage unit 41 has a valve 41c that opens and closes the opening 41b. When the valve 41c closes the opening 41b, the adsorbent 10 is stored in the storage unit 41. When the valve 41c opens the opening 41b, the adsorbent 10 falls toward the adsorption unit main body 42 due to its own weight.

[0020] The adsorption unit main body 42 is disposed between the storage unit 41 and the recovery unit 43. The inlet 31 a and the outlet 31 b described above are provided in the adsorption unit main body 42. As will be described in detail later, in the adsorption unit main body 42, the adsorbent 10 comes into contact with air and adsorbs carbon dioxide contained in the air.

[0021] The recovery unit 43 is disposed below the adsorption unit main body 42. The recovery unit 43 is in communication with the adsorption unit main body 42 via an opening 43 a. The recovery unit 43 recovers the adsorbent 10 that has adsorbed carbon dioxide in the adsorption unit main body 42. The recovery unit 43 may be detachable from the adsorption unit main body 42.

[0022] As shown in Fig. 4, a plurality of first inclined members 33 and a plurality of second inclined members 34 are arranged on the suction unit main body 42. The first inclined members 33 and the second inclined members 34 are plate-shaped members inclined with respect to the horizontal plane (XY plane). The first inclined members 33 and the second inclined members 34 have the same shape. In Fig. 4, the first inclined members 33 are indicated by solid lines, and the second inclined members 34 are indicated by dotted lines.

[0023] A first end 33a of the first inclined member 33 in the longitudinal direction is fixed to the adsorbent container 31. A second end 33b of the first inclined member 33 in the longitudinal direction is separated from the adsorbent container 31, and a gap is formed between the second end 33b and the adsorbent container 31. The second end 33b is positioned below the first end 33a. The multiple first inclined members 33 are arranged side by side in the Z direction. The first inclined members 33 adjacent to each other in the Z direction are arranged so that their inclination directions are opposite. The first inclined members 33 adjacent to each other in the Z direction are arranged so that at least a portion of each of the first inclined members 33 overlaps with each other in the Y direction when viewed from the X direction (i.e., in the YZ plane shown in FIG. 4 ). The first inclined members 33 adjacent to each other in the Z direction are arranged so that the second end 33b of one first inclined member 33 is located between the first end 33a and the second end 33b of the other first inclined member 33 in the Y direction. The adsorbent 10 rolls or slides on the first inclined member 33 from the first end 33a to the second end 33b due to its own weight. The adsorbent 10 drops downward from the gap between the second end 33b and the adsorbent container 31 and moves to the next first inclined member 33 or the recovery section 43.

[0024] A first end 34a in the longitudinal direction of the second inclined member 34 is fixed to the adsorbent container 31. A second end 34b in the longitudinal direction of the second inclined member 34 is separated from the adsorbent container 31, and a gap is formed between the second end 34b and the adsorbent container 31. The second end 34b is positioned lower than the first end 34a. The multiple second inclined members 34 are arranged side by side in the Z direction. The second inclined members 34 adjacent to each other in the Z direction are arranged so that their inclination directions are opposite. The second inclined members 34 adjacent to each other in the Z direction are arranged so that at least a portion of each second inclined member 34 overlaps with each other in the Y direction when viewed from the X direction (i.e., in the YZ plane shown in FIG. 4 ). The second inclined members 34 adjacent to each other in the Z direction are arranged so that the second end 34b of one second inclined member 34 is located between the first end 34a and the second end 34b of the other second inclined member 34 in the Y direction. The adsorbent 10 rolls or slides on the second inclined member 34 from the first end 34a to the second end 34b due to its own weight. The adsorbent 10 moves downward through the gap between the second end 34b and the adsorbent container 31.

[0025] The first inclined member 33 and the second inclined member 34 are arranged to have different heights (i.e., positions in the Z direction). Specifically, when viewed from the X direction, the height of the first end 33a of the first inclined member 33 is different from the height of the first end 34a of the second inclined member 34 adjacent to the first inclined member 33 in the Z direction. When viewed from the X direction, the height of the second end 33b of the first inclined member 33 is different from the height of the second end 34b of the second inclined member 34 adjacent to the first inclined member 33 in the Z direction. When viewed from the X direction, the second inclined member 34 is arranged between the first inclined members 33 adjacent to each other in the Z direction. When viewed from the X direction (i.e., in the YZ plane shown in FIG. 4 ), the first inclined members 33 and the second inclined members 34 adjacent to each other in the Z direction are arranged so that at least a portion of each of them overlaps with each other in the Y direction. The first inclined member 33 and the second inclined member 34, which are adjacent in the Z direction, are arranged so that the second end 33b of the first inclined member 33 is located between the first end 34a and the second end 34b of the second inclined member 34 in the Y direction, and the second end 34b of the second inclined member 34 is located between the first end 33a and the second end 33b of the first inclined member 33 in the Y direction.

[0026] The adsorbent 10 rolls or slides on the first inclined member 33 or the second inclined member 34 due to its own weight. As a result, the adsorbent 10 moves downward in the adsorption unit main body 42 from the storage unit 41 toward the recovery unit 43. In the adsorption unit main body 42, the adsorbent 10 comes into contact with air introduced into the internal space of the adsorbent container 31 through the inlet 31a, and adsorbs carbon dioxide contained in the air. The air from which carbon dioxide has been removed by the adsorbent 10 flows out of the internal space of the adsorbent container 31 through the outlet 31b.

[0027] Here, if the gaps between the adsorbents in the adsorbent container are large, a large amount of airflow will flow through these gaps, reducing the flow rate of air passing through the adsorbent. As a result, the amount of carbon dioxide adsorbed by the adsorbent will decrease, increasing carbon dioxide capture costs and reducing carbon dioxide capture efficiency. In this embodiment, the second inclined member 34 is provided alongside the first inclined member 33 in the X direction (the flow direction of the airflow through the adsorbent container 31). As a result, when viewed from the X direction, the gaps between the adsorbents 10 are smaller than when, for example, only the first inclined member 33 is provided, thereby making the air velocity distribution within the adsorbent container 31 more uniform. As a result, the flow rate of air passing through the adsorbent 10 increases, increasing the amount of carbon dioxide adsorbed by the adsorbent 10. Therefore, carbon dioxide capture costs can be reduced and carbon dioxide capture efficiency can be improved.

[0028] The separation unit 50 is connected to the recovery unit 43. The adsorbent 10 is transported from the recovery unit 43 to the separation unit 50. The separation unit 50 applies heat, pressure, or the like to the adsorbent 10 transported from the recovery unit 43 to separate carbon dioxide from the adsorbent 10. For example, the separation unit 50 is equipped with a heating device (not shown) that supplies hot air into the separation unit 50. By heating the adsorbent 10 with carbon dioxide adsorbed thereto with the hot air, the carbon dioxide adsorbed to the adsorbent 10 is separated from the adsorbent 10.

[0029] The storage unit 60 is in communication with the separation unit 50 via a pipe (not shown). The storage unit 60 has, for example, a cylinder capable of storing carbon dioxide. The carbon dioxide separated from the adsorbent 10 by the separation unit 50 is exhausted from the separation unit 50 and stored in the storage unit 60 via the pipe.

[0030] The gas recovery method of this embodiment will be described below. The gas recovery method includes an adsorption step, a separation step, and a recovery step.

[0031] In the adsorbent container 31, the adsorbent 10 is stored in the storage section 41. When the opening 41b is opened by the valve 41c, the adsorbent 10 falls toward the adsorption section main body 42 under its own weight and rolls or slides on the inclined members 33, 34. The adsorbent 10 comes into contact with air in the adsorption section main body 42 and adsorbs carbon dioxide contained in the air (adsorption process). The adsorbent 10 that has adsorbed carbon dioxide passes through the opening 43a and is stored in the recovery section 43. The adsorbent 10 stored in the recovery section 43 is transported to the separation section 50. In the separation section 50, carbon dioxide is separated from the adsorbent 10 (separation process). The carbon dioxide separated from the adsorbent 10 is exhausted from the separation section 50 and stored in the storage section 60 (recovery process).

[0032] As described above, the gas recovery device 1 according to this embodiment includes the adsorbent 10 that adsorbs the target gas, the adsorbent container 31 that is breathable and can accommodate the adsorbent 10, the first inclined member 33 that is provided inside the adsorbent container 31 and that moves the adsorbent 10, and the second inclined member 34 that serves as a uniform member that uniforms the wind speed distribution inside the adsorbent container 31.

[0033] The second inclined member 34 (uniform member) can make the wind speed distribution uniform inside the adsorbent container 31. As a result, the flow rate of the mixed gas containing the target gas passing through the adsorbent 10 increases, and the amount of the target gas adsorbed by the adsorbent 10 increases. Therefore, the cost of recovering the target gas can be reduced, and the recovery efficiency of the target gas can be improved.

[0034] The uniform member is a second inclined member 34 that is arranged alongside the first inclined member 33 in the flow direction of the airflow flowing through the adsorbent container 31 and moves the adsorbent 10. With the above configuration, compared to, for example, a case where only the first inclined member 33 is provided, the gap between the adsorbents 10 is smaller, the flow rate of the mixed gas passing through the adsorbent 10 is increased, and the amount of the target gas adsorbed by the adsorbent 10 is increased. Also, the number of adsorbents 10 that can be accommodated in the adsorbent container 31 is increased. This further improves the recovery efficiency of the target gas.

[0035] Furthermore, the first inclined member 33 and the second inclined member 34 have different heights. According to the above configuration, even if the first inclined member 33 and the second inclined member 34 are arranged side by side, an increase in the pressure loss of the entire adsorbent container 31 can be suppressed.

[0036] Furthermore, the first inclined member 33 and the second inclined member 34 have the same shape. According to the above configuration, the manufacturing cost of the gas recovery device 1 can be reduced, and therefore the recovery cost of the target gas can be reduced.

[0037] The adsorbent 10 is cylindrical or spherical. According to the above configuration, the adsorbent 10 is moved by rolling on the first inclined member 33, which eliminates the need for power to transport the adsorbent 10 and reduces the cost of recovering the target gas.

[0038] Second Embodiment Next, a gas recovery device 1 according to a second embodiment will be described. The gas recovery device 1 according to this embodiment has the same basic configuration as that of the first embodiment, and therefore the following description will focus on the differences.

[0039] 5 and 6 , in this embodiment, the first inclined members 33 and the second inclined members 34 are arranged side by side in the Y direction inside the adsorbent container 31. For example, the adsorbent container 31 is provided with a breathable partition plate 35, which divides the internal space of the adsorbent container 31 into two spaces S3 and S4 in the Y direction, with multiple first inclined members 33 arranged in one space S3 and multiple second inclined members 34 arranged in the other space S4. Note that the direction in which the first inclined members 33 and the second inclined members 34 are arranged is not limited to the Y direction and may be any horizontal direction that intersects with the flow direction of the airflow passing through the adsorbent container 31.

[0040] In the space S3, a plurality of first inclination members 33 are arranged side by side in the Z direction. In the space S4, a plurality of second inclination members 34 are arranged side by side in the Z direction. In this embodiment, the first inclination members 33 and the second inclination members 34 may be arranged to have the same height or different heights.

[0041] In this embodiment, the second inclined member 34 is arranged alongside the first inclined member 33 in the Y direction (a horizontal direction intersecting the flow direction of the airflow through the adsorbent container 31). That is, the inclined members 33, 34 are arranged in two rows in the Y direction. This reduces the gap between the adsorbents 10 compared to when the inclined members are arranged in a single row in the Y direction, and increases the occupancy rate of the adsorbent 10 in the adsorbent container 31. More specifically, when the adsorbent containers 31 have the same shape, when the inclined members 33, 34 are arranged in two rows in the Y direction, the number of inclined members 33, 34 that can be arranged in the Z direction increases compared to when the inclined members are arranged in a single row in the Y direction. Therefore, the spacing between the multiple inclined members 33, 34 in the Z direction decreases, and the gap between the adsorbents 10 decreases. By increasing the occupancy rate of the adsorbent 10 in the adsorbent container 31, the wind speed distribution within the adsorbent container 31 can be made uniform. As a result, the flow rate of air passing through the adsorbent 10 increases, and the amount of carbon dioxide adsorbed by the adsorbent 10 increases. Therefore, the cost of capturing carbon dioxide can be reduced, and the efficiency of capturing carbon dioxide can be improved.

[0042] As described above, in this embodiment, the uniform member is the second inclined member 34, which is arranged horizontally alongside the first inclined member 33 in a direction intersecting the flow direction of the airflow passing through the adsorbent container 31, and which moves the adsorbent 10. With the above configuration, the gaps between the adsorbents 10 are smaller than when, for example, the inclined members are arranged in a row in the above direction. This increases the flow rate of the mixed gas passing through the adsorbent 10, and increases the amount of adsorption of the target gas by the adsorbent 10. Furthermore, the number of adsorbents 10 that can be accommodated in the adsorbent container 31 increases. This further improves the target gas recovery efficiency.

[0043] Third Embodiment Next, a gas recovery device 1 according to a third embodiment will be described. The gas recovery device 1 according to this embodiment has the same basic configuration as that of the first embodiment, and therefore the following description will focus on the differences.

[0044] 7 and 8 , in this embodiment, only the first inclined member 33 is provided inside the adsorbent container 31. The adsorbent container 31 is provided with a resistance member 36 (uniform member). In the illustrated example, the resistance member 36 is provided on the outside of the adsorbent container 31. However, the resistance member 36 may also be provided on the inside of the adsorbent container 31.

[0045] The resistance member 36 is disposed to face the inlet 31a or the outlet 31b of the adsorbent container 31 in the X direction (the flow direction of the airflow through the adsorbent container). The resistance member 36 is disposed to overlap with a portion of the adsorption unit main body 42 other than the region where the adsorbent 10 moves on the first inclined member 33, as viewed from the X direction. In other words, the resistance member 36 is disposed to not overlap with the region where the adsorbent 10 moves on the first inclined member 33, as viewed from the X direction. The ventilation resistance of the resistance member 36 in the X direction is 1 to 1.2 times the ventilation resistance of the adsorbent 10. The provision of the resistance member 36 makes it possible to uniform the air velocity distribution within the adsorbent container 31.

[0046] The relationship between the ventilation resistance of the resistance element 36 and the ventilation resistance of the adsorbent 10 will now be described. If the ventilation resistance of the resistance element 36 is smaller than the ventilation resistance of the adsorbent 10 (i.e., if the ventilation resistance of the resistance element 36 is smaller than 1 times the ventilation resistance of the adsorbent 10), the pressure loss of the resistance element 36 will be lower than the pressure loss of the adsorbent 10. This will result in a greater amount of air passing through the interior of the resistance element 36 than through the interior of the adsorbent 10, thereby reducing the flow rate of air passing through the adsorbent 10. Furthermore, if the ventilation resistance of the resistance element 36 is too large compared to the ventilation resistance of the adsorbent 10 (i.e., if the ventilation resistance of the resistance element 36 is greater than 1.2 times the ventilation resistance of the adsorbent 10), the pressure loss of the resistance element 36 will be too high compared to the pressure loss of the adsorbent 10. As a result, the pressure loss of the entire adsorbent container 31 will increase, reducing the flow rate of air passing through the adsorbent 10. Furthermore, the primary function of the air blower 20 in which the adsorbent container 31 is installed will be reduced. For example, if the blower 20 is an outdoor unit or an indoor unit of an air conditioning system, an increase in pressure loss across the adsorbent container 31 will reduce the blowing capacity (air volume) of the blower 20 and decrease the heat exchange performance. If the blower 20 is a ventilation fan, an increase in pressure loss across the adsorbent container 31 will reduce the blowing capacity (air volume) of the blower 20. In order to increase the flow rate of air passing through the adsorbent 10 while minimizing the decrease in the primary function of the blower 20, the ventilation resistance of the resistance member 36 in the X direction is set to 1 to 1.2 times the ventilation resistance of the adsorbent 10.

[0047] As described above, in this embodiment, the uniform member is the resistance member 36 that is provided in the adsorbent container 31 and has a ventilation resistance in the flow direction of the airflow flowing through the adsorbent container 31 that is 1 to 1.2 times the ventilation resistance of the adsorbent 10. According to the above configuration, the resistance member 36 can uniformize the air velocity distribution inside the adsorbent container 31, increasing the flow rate of the mixed gas passing through the adsorbent 10 and increasing the amount of the target gas adsorbed by the adsorbent 10. This can further improve the recovery efficiency of the target gas.

[0048] The technical scope of the present disclosure is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present disclosure.

[0049] For example, in the first embodiment, the inclined members 33 and 34 may be arranged in three or more rows in the X direction. In the second embodiment, the inclined members 33 and 34 may be arranged in three or more rows in the Y direction.

[0050] In the first to third embodiments, the blower 20 may be omitted. In this case, for example, the adsorption unit 30 may be placed outdoors, and air may be circulated through the adsorption unit main body 42 by wind blowing outdoors. Also, in the first to third embodiments, the storage unit 41 may be omitted. In this case, for example, the adsorbent 10 may be supplied directly to the adsorption unit main body 42. Also, in the first to third embodiments, the recovery unit 43 may be omitted. In this case, for example, the adsorbent 10 may be supplied directly to the separation unit 50. In other words, the adsorbent 10 transferred from the adsorption unit main body 42 may be transported to the separation unit 50 without being recovered by the recovery unit 43.

[0051] Furthermore, in the first to third embodiments, an example in which the target gas is carbon dioxide has been described, but the present disclosure is not limited to this. The gas recovery device of the present disclosure is also applicable to cases in which the target gas is nitrogen oxide (NOx), methane, water, formaldehyde, or the like. Furthermore, the mixed gas containing the target gas is not limited to air.

[0052] In addition, the above-described embodiments and modifications may be combined as appropriate.

[0053] For example, in the first and second embodiments, the adsorbent container 31 may be provided with a resistance member 36 .

[0054] REFERENCE SIGNS LIST 1...gas recovery device, 10...adsorbent, 20...blower section, 31...adsorbent container, 33...first inclined member (inclined member), 34...second inclined member (uniform member), 36...resistance member (uniform member)

Claims

1. A gas recovery device comprising: an adsorbent that adsorbs a target gas; an adsorbent container that is breathable and capable of containing the adsorbent; an inclined member that is provided inside the adsorbent container and that moves the adsorbent; and a uniforming member that uniforms the wind speed distribution inside the adsorbent container.

2. The gas recovery device according to claim 1, wherein the uniform member is a second inclined member arranged alongside the inclined member in the flow direction of the airflow passing through the adsorbent container, for moving the adsorbent.

3. The gas recovery device described in claim 1, wherein the uniform member is a second inclined member arranged horizontally alongside the inclined member in a direction intersecting the flow direction of the airflow flowing through the adsorbent container, for moving the adsorbent.

4. The gas recovery device according to claim 2, wherein the inclined member and the second inclined member have different heights.

5. A gas recovery device according to claim 2 or 3, wherein the inclined member and the second inclined member have the same shape.

6. The gas recovery device described in claim 1, wherein the uniform member is a resistance member provided in the adsorbent container and whose ventilation resistance in the flow direction of the airflow flowing through the adsorbent container is 1 to 1.2 times the ventilation resistance of the adsorbent.

7. A gas recovery device according to any one of claims 1 to 6, wherein the adsorbent is cylindrical or spherical.

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