Carbon dioxide recovery device, carbon dioxide recovery method, and carbon dioxide recovery system

Abstract

This carbon dioxide recovery device is provided with: a gas-permeable container which is disposed in a hoistway of an elevator car and on the outside of the elevator car or on the outside of a counterweight; and an adsorbent which is accommodated in the container and adsorbs carbon dioxide.

Description

Technical Field

[0001] The present disclosure relates to a carbon dioxide recovery device, a carbon dioxide recovery method and a carbon dioxide recovery system. Background Art

[0002] Patent Document 1 discloses a technique for removing carbon dioxide from the air using an adsorbent capable of adsorbing carbon dioxide.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2020-131166 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] As carbon dioxide is adsorbed by the adsorbent, the carbon dioxide concentration in the air on the adsorbent's surface gradually decreases. As the carbon dioxide concentration decreases, the adsorbent's carbon dioxide recovery efficiency decreases. Therefore, to maintain carbon dioxide recovery efficiency, it is preferable to continue blowing air onto the adsorbent even if the carbon dioxide concentration has not decreased. However, if, for example, a device is provided solely for blowing air onto the adsorbent, the actual carbon dioxide recovery efficiency of the entire system may decrease due to the power consumption of this device.

[0008] In view of the above circumstances, an object of the present disclosure is to provide a carbon dioxide recovery device, a carbon dioxide recovery method, and a carbon dioxide recovery system capable of maintaining the recovery efficiency of carbon dioxide in the entire system.

[0009] Solutions to Problems

[0010] One embodiment of the carbon dioxide recovery device disclosed herein includes: a gas-permeable container disposed in an elevator car passage and outside the elevator car or outside a counterweight; and an adsorbent housed in the container for adsorbing carbon dioxide.

[0011] One embodiment of the carbon dioxide recovery method disclosed herein comprises: a filling step, in which an adsorbent to be adsorbed with carbon dioxide is filled into a container, wherein the container is air-permeable and is arranged in a lifting passage of an elevator car chamber and on the outside of the elevator car chamber or on the outside of a counterweight; an adsorption step, in which the adsorbent is brought into contact with air containing carbon dioxide by raising and lowering the elevator car chamber, thereby adsorbing carbon dioxide on the adsorbent; and a recovery step, in which the adsorbent that has adsorbed carbon dioxide is recovered from the container.

[0012] One aspect of the carbon dioxide recovery system disclosed herein includes: the carbon dioxide recovery device; the elevator car; the counterweight; and a control panel for controlling the raising and lowering of the elevator car.

[0013] Effects of the Invention

[0014] According to the present disclosure, a carbon dioxide recovery device, a carbon dioxide recovery method, and a carbon dioxide recovery system capable of maintaining the carbon dioxide recovery efficiency in the entire system can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the carbon dioxide recovery system of embodiment 1.

[0016] Figure 2 This is a schematic diagram of a carbon dioxide recovery system according to a second embodiment.

[0017] Figure 3 yes Figure 2 AA section view.

[0018] Figure 4 This is a schematic diagram of a carbon dioxide recovery system according to a third embodiment.

[0019] Figure 5 This is a graph showing the relationship between the loading rate and power consumption in an elevator device.

[0020] Figure 6 This is a schematic diagram of a carbon dioxide recovery system according to a fourth embodiment.

[0021] Figure 7 This is a schematic diagram of a carbon dioxide recovery system according to a fifth embodiment.

[0022] Figure 8 This is a schematic diagram showing a portion of the structure of the carbon dioxide recovery system according to the sixth embodiment. DETAILED DESCRIPTION

[0023] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. The scope of the present disclosure is not limited to the following embodiments, and can be arbitrarily modified within the scope of the technical concept of the present disclosure.

[0024] Implementation Method 1

[0025] Figure 1 This is a schematic diagram showing the carbon dioxide recovery device and carbon dioxide recovery system according to the first embodiment.

[0026] like Figure 1 As shown, the carbon dioxide recovery system 1 includes a carbon dioxide recovery device 10 and an elevator device 20. The carbon dioxide recovery system 1 is installed in a building B including the elevator device 20.

[0027] The elevator device 20 includes an elevator car 21, a counterweight 22, a rope 23, a hoist 24, a control panel 25, and the like. The elevator car 21 and the counterweight 22 are disposed within a hoistway P provided in the building B. The elevator car 21 and the counterweight 22 are capable of ascending and descending within the hoistway P. The elevator device 20 may be a type for passenger transportation or a type dedicated to cargo transportation.

[0028] The elevator car 21 and the counterweight 22 are fixed to the ends of the rope 23, respectively. The hoist 24 feeds out the rope 23 to raise and lower the elevator car 21. The control panel 25 is electrically connected to the hoist 24. In the figure, the control panel 25 is arranged near the hoist 24, but the control panel 25 can also be arranged away from the hoist 24. The control panel 25 controls the length, speed, direction, etc. of the rope 23 fed out by the hoist 24. Based on the control of the control panel 25, the elevator car 21 moves between the floors F of the building B or stops at each floor F. In the figure, the number of floors F of the building B is 3, but the number of floors F can be 2 or 4 or more.

[0029] The carbon dioxide recovery device 10 includes a container 11 and an adsorbent 12. The carbon dioxide recovery device 10 is placed in the elevator shaft P, outside the elevator car 21 or outside the counterweight 22. Figure 1 In the embodiment, the carbon dioxide recovery device 10 is fixed to the lower side of the elevator car chamber 21. However, the carbon dioxide recovery device 10 may be fixed to the upper side or the lower side of the counterweight 22.

[0030] The container 11 is air-permeable. Therefore, when the elevator car 21 and counterweight 22 move up and down, air within the elevator shaft P enters the container 11. Furthermore, the air within the container 11 is discharged into the elevator shaft P. In other words, the up and down movement of the elevator car 21 and counterweight 22 allows the air within the container 11 to be exchanged with the air within the elevator shaft P.

[0031] Container 11 only needs to be able to accommodate adsorbent 12 and be air-permeable. For example, if adsorbent 12 is granular, container 11 may be formed with a plurality of pores smaller than the particle size of adsorbent 12. Container 11 may also be entirely or partially mesh-shaped. The material of container 11 can be modified as appropriate and may be metal or resin. Container 11 may also employ structures other than those described above.

[0032] The adsorbent 12 contains a material capable of adsorbing carbon dioxide. Examples of materials capable of adsorbing carbon dioxide include amines, zeolites, silica gel, diatomaceous earth, alumina, activated carbon, and the like. A plurality of materials may be selected from the above, or materials other than the above may be used. The adsorbent 12 may also be granular (e.g., beads (spherical), pellets (cylindrical)). Alternatively, a powdered adsorbent 12 may be used. In this case, the powdered adsorbent 12 may also be maintained on the surface of the substrate. The substrate may also be, for example, in a honeycomb shape.

[0033] The carbon dioxide recovery method of the present embodiment includes a filling step, an adsorption step, and a recovery step.

[0034] In the filling step, the adsorbent 12 is filled into the container 11 .

[0035] In the adsorption step, the elevator car chamber 21 is moved up and down, so that air containing carbon dioxide comes into contact with the adsorbent 12 , and the carbon dioxide is adsorbed on the adsorbent 12 .

[0036] In the recovery step, the adsorbent 12 that has adsorbed carbon dioxide is recovered from the container 11 .

[0037] The recovery process may also be performed, for example, during maintenance and inspection of the elevator device 20. At this time, the adsorbent 12 that has adsorbed carbon dioxide may be removed from the container 11 and new adsorbent 12 may be filled into the container 11. Alternatively, the container 11 may be replaced together with the adsorbent 12. Carbon dioxide may be removed from the recovered adsorbent 12 and used to generate methane or the like.

[0038] As described above, the carbon dioxide recovery device 10 of this embodiment includes: a container 11, which is air-permeable and is arranged in the lifting channel P of the elevator car room 21, and on the outside of the elevator car room 21 or the outside of the counterweight 22; and an adsorbent 12, which is accommodated in the container 11 and adsorbs carbon dioxide.

[0039] In addition, the carbon dioxide recovery method of this embodiment includes: a filling process, in which the adsorbent 12 to be adsorbed with carbon dioxide is filled into a breathable container 11 which is arranged in the lifting channel P of the elevator car chamber 21 and on the outside of the elevator car chamber 21 or on the outside of the counterweight 22; an adsorption process, in which the adsorbent 12 is brought into contact with the air containing carbon dioxide by raising and lowering the elevator car chamber 21, so that the carbon dioxide is adsorbed on the adsorbent 12; and a recovery process, in which the adsorbent 12 that has adsorbed carbon dioxide is recovered from the container 11.

[0040] According to such a carbon dioxide recovery device 10 or carbon dioxide recovery method, the air in the container 11 can be efficiently replaced with the air in the lift passage P by utilizing the airflow generated within the lift passage P as the elevator device 20 operates. Thus, air whose carbon dioxide concentration has been reduced by contact with the adsorbent 12 can be discharged from the container 11, while air whose carbon dioxide concentration has not been reduced can be taken into the container 11. Therefore, the carbon dioxide recovery efficiency can be maintained. Furthermore, compared to the use of, for example, a dedicated blower for generating airflow, energy savings and costs can be achieved, while maintaining the carbon dioxide recovery efficiency of the entire system.

[0041] Alternatively, the container 11 can be fixed to the upper or lower side of the elevator car 21. In this case, as the elevator car 21 moves up and down, air can easily blow into the container 11. Therefore, the air in the container 11 can be more efficiently replaced with the air in the elevator passage P, thereby improving the efficiency of carbon dioxide recovery. Furthermore, compared to the case where the container 11 is fixed to the counterweight 22, the installation area of ​​the carbon dioxide recovery device 10 can be increased. In other words, since the amount of adsorbent 12 filled in the container 11 can be increased, the efficiency of carbon dioxide recovery can be improved. The container 11 can also be fixed to both the upper and lower sides of the elevator car 21. Fixing the container 11 not only above and below the car 21 but also on the outside of the counterweight 22 can further improve the recovery efficiency.

[0042] For example, if the elevator 20 operating rate is low, the chances of wind blowing toward the carbon dioxide recovery device 10 decrease, leading to lower carbon dioxide recovery efficiency. Therefore, if the elevator car 21's stop time exceeds a threshold, the elevator car 21 can be raised or lowered even without user intervention. This control can be performed by the control panel 25 or other control equipment. The threshold can be set appropriately, for example, to 10 minutes.

[0043] Thus, by raising and lowering the elevator car 21 when the stop time of the elevator car 21 exceeds the threshold, the carbon dioxide recovery efficiency of the carbon dioxide recovery device 10 can be maintained even when the operation rate of the elevator apparatus 20 is low.

[0044] Implementation Method 2

[0045] Next, a description will be given of a carbon dioxide recovery system according to Embodiment 2. The basic configuration of the carbon dioxide recovery system according to this embodiment is the same as that of Embodiment 1, and therefore the description will focus on the differences.

[0046] In the first embodiment, the carbon dioxide recovery device 10 is fixed to the elevator car 21 or the counterweight 22 and moves up and down with the operation of the elevator device 20. In contrast, in the present embodiment, Figure 2 and Figure 3 As shown, the carbon dioxide recovery device 10 is fixed to the wall surface of the elevator shaft P. That is, in this embodiment, the carbon dioxide recovery device 10 remains stationary in the elevator shaft P even when the elevator device 20 is in operation.

[0047] exist Figure 2 、 Figure 3 In the example shown in FIG. 1 , the container 11 is arranged along the wall surface P1 in the elevator passage P. The container 11 is filled with an adsorbent 12. The container 11 may be arranged across multiple floors F. Alternatively, multiple containers 11 may be arranged for each floor F.

[0048] As in this embodiment, when container 11 is fixed in elevator duct P, the airflow generated in elevator duct P during operation of elevator device 20 is directed toward stationary container 11. This airflow allows the air in container 11 to be replaced with the air in elevator duct P. Furthermore, the volume of container 11 and the amount of adsorbent 12 filled in container 11 can be increased. Consequently, the efficiency of carbon dioxide recovery can be further improved.

[0049] Implementation 3

[0050] Next, a description will be given of a carbon dioxide recovery system according to Embodiment 3. The basic configuration of the carbon dioxide recovery system according to this embodiment is the same as that of Embodiment 1, and therefore the description will focus on the differences.

[0051] like Figure 4 As shown, in this embodiment, a separation device b1 and a methanation system b2 are provided in a building B.

[0052] Separator b1 has the function of separating carbon dioxide from adsorbent 12. Separator b1 may also include a heater to heat adsorbent 12 (e.g., to 60-120°C) to separate carbon dioxide. The heating temperature may also be appropriately adjusted depending on the specific material of adsorbent 12. Alternatively, separator b1 may include a vacuum pump to separate carbon dioxide by placing adsorbent 12 under reduced pressure.

[0053] Methanation system b2 generates methane using carbon dioxide, water, electricity, and other resources. Methanation system b2 can also generate methane using electricity generated from renewable energy sources (e.g., sunlight). Building B may also be equipped with solar cells or other devices to operate methanation system b2.

[0054] The carbon dioxide recovery system 1 of the present embodiment circulates the adsorbent 12 as follows.

[0055] First, in the ascending and descending passage P, the adsorbent 12 is caused to adsorb carbon dioxide.

[0056] Next, the adsorbent 12 is transferred from the container 11 to the separation device b1.

[0057] Next, carbon dioxide is separated from the adsorbent 12 by the separation device b1.

[0058] Next, the separated carbon dioxide is transported to the methanation system b2, where methane is generated.

[0059] Next, the adsorbent 12 from which carbon dioxide has been separated is transported to the container 11 and filled into the container 11 .

[0060] Alternatively, a storage tank may be provided to store the adsorbent 12 after separation of carbon dioxide. In this case, the adsorbent 12 can be circulated without stagnation.

[0061] Here, when the adsorbent 12 is filled into the container 11, the amount of adsorbent 12 filled into the container 11 may be varied according to the loading rate of the elevator car chamber 21. For example, the amount of adsorbent 12 filled into the container 11 may be controlled by the control panel 25. The loading rate of the elevator car chamber 21 is calculated by the following mathematical formula (1). In mathematical formula (1), R is the loading rate (%), x1 is the weight of the elevator car chamber 21, x2 is the weight of the load in the elevator car chamber 21, x3 is the weight of the carbon dioxide recovery device 10 fixed to the elevator car chamber 21, and n is the allowable weight.

[0062] R=(x1+x2+x3) / n×100…(1)

[0063] The value of (x1+x2+x3) can be acquired using, for example, a sensor that measures the load applied to the rope 23. The control panel 25 may calculate the loading factor R based on the value of x1+x2+x3 measured by the sensor.

[0064] Figure 5 Graph showing the relationship between the loading rate R and the power consumption of the elevator device 20. Figure 5 As shown, when the loading rate R is 50%, the power consumption of the elevator device 20 is minimized. Therefore, when the loading rate R is 50% or less, the container 11 may be filled with adsorbent 12 (i.e., the value of x3 may be increased) to bring the loading rate R closer to 50%. In this case, by filling the container 11 with adsorbent 12, the power consumption of the elevator device 20 can be reduced. It is more preferable to control the amount of adsorbent 12 filled into the container 11 so that the loading rate R is 50%.

[0065] Implementation 4

[0066] Next, a description will be given of a carbon dioxide recovery system according to Embodiment 4. The basic configuration of the carbon dioxide recovery system according to this embodiment is the same as that of Embodiment 3, and therefore the description will focus on the differences.

[0067] like Figure 6 As shown, in this embodiment, a blower b3 is installed in building B. Blower b3 is installed on each floor F and delivers air from floor F to the elevator P. The carbon dioxide concentration in the air on floor F often increases with human breathing. Therefore, by delivering air from floor F to the elevator P, the carbon dioxide concentration in the elevator P can be increased. Thus, in this specification, the process of increasing the carbon dioxide concentration in the elevator P is referred to as the "high-concentration process."

[0068] Specifically, the carbon dioxide recovery method of this embodiment includes, in addition to the filling, adsorption, and recovery steps, a high-concentration step. In this high-concentration step, air is transported from floor F to the elevator duct P, thereby increasing the carbon dioxide concentration within the elevator duct P. This further improves the carbon dioxide recovery efficiency of the carbon dioxide recovery device 10.

[0069] In addition, the carbon dioxide concentration in the ascending and descending passage P may be increased by using a member other than the blower b3.

[0070] Implementation 5

[0071] Next, a description will be given of a carbon dioxide recovery system according to Embodiment 5. The basic configuration of the carbon dioxide recovery system according to this embodiment is the same as that of Embodiment 3, and therefore the description will focus on the differences.

[0072] like Figure 7 As shown in FIG. 1 , in this embodiment, ventilation ports A1 and A2 are provided in the lift passage P. Figure 7 In the embodiment, the number of ventilation ports A1 and A2 is 2, but this number can be changed appropriately, and may be 1 or 3 or more.

[0073] As the carbon dioxide recovery device 10 adsorbs carbon dioxide, the carbon dioxide concentration in the air within the elevator duct P gradually decreases. As the carbon dioxide concentration decreases, the carbon dioxide recovery efficiency of the carbon dioxide recovery device 10 decreases. Therefore, in this embodiment, outside air is introduced into the elevator duct P through the ventilation ports A1 and A2. This allows the carbon dioxide concentration within the elevator duct P to be restored to the same level as that of the outside air, thus suppressing a decrease in the carbon dioxide recovery efficiency.

[0074] Alternatively, the ventilation ports A1 and A2 may be simple openings. Alternatively, ventilation fans may be provided at the ventilation ports A1 and A2 to actively draw outside air into the lift duct P. Alternatively, outside air may be drawn into the lift duct P through one of the ventilation ports A1 and A2, and air within the lift duct P may be exhausted through the other of the ventilation ports A1 and A2.

[0075] Implementation Method 6

[0076] Next, a description will be given of a carbon dioxide recovery system according to Embodiment 6. The basic configuration of the carbon dioxide recovery system according to this embodiment is the same as that of Embodiment 1, and therefore the description will focus on the differences.

[0077] In this embodiment, a case where a building B includes a plurality of elevator apparatuses 20 will be described.

[0078] For example, in the elevator lobby of a building or apartment building, multiple elevators are often installed in parallel to shorten elevator waiting times. If there are more than one elevator 20 on standby, even if the remaining elevators 20 are operating to collect carbon dioxide, this can prevent increased passenger waiting times. In other words, by operating the elevators 20 even when no passengers are on board, the standby time can be effectively utilized to collect carbon dioxide.

[0079] Therefore, in this embodiment, Figure 8 That is, the carbon dioxide recovery system 1 includes a plurality of elevator devices 20 and 20A. The structure of the elevator device 20A may be the same as that of the elevator device 20. The elevator device 20A includes an elevator car 21A, a hoist 24A, and a control panel 25A. The control panel 25A controls the hoist 24A to raise and lower the elevator car 21A. In addition, communication is performed between the control panel 25 and the control panel 25A to share each other's operating conditions. In the elevator car 21A, the carbon dioxide recovery device 10 may be fixed, similarly to the first elevator car 21 in Embodiment 1. Alternatively, the elevator cars 21 and 21A may be arranged in a common elevator shaft P, and the carbon dioxide recovery device 10 may be fixed inside the elevator shaft P, similarly to Embodiment 2.

[0080] Control panels 25 and 25A communicate with each other, and when one of elevator car compartments 21 and 21A is stopped, the other is raised or lowered. For example, when elevator car compartment 21 is stopped, elevator car compartment 21A is raised or lowered. As elevator car compartment 21A rises or falls, air flows toward carbon dioxide recovery device 10, thereby accelerating carbon dioxide recovery using adsorbent 12.

[0081] As described above, the carbon dioxide recovery system 1 of this embodiment includes multiple elevator car chambers (a first elevator car chamber 21 and a second elevator car chamber 21A) and multiple control panels (a first control panel 25 and a second control panel 25A). The control panel 25A communicates with the control panel 25 to raise or lower the elevator car chamber 21A when the elevator car chamber 21 is stopped. This structure can avoid increasing passenger waiting time while improving carbon dioxide recovery efficiency. The same control can also be applied when three or more elevator devices are arranged in parallel.

[0082] In addition, the technical scope of the present disclosure is not limited to the above-described embodiment, and various changes can be made without departing from the gist of the present disclosure.

[0083] For example, a gas cylinder capable of storing carbon dioxide may be provided in place of or in addition to the methanation system b2 described in Embodiment 3. In this case, the carbon dioxide separated from the adsorbent 12 by the separation device b1 can be stored in the gas cylinder. The gas cylinder containing carbon dioxide can also be transported to another location (e.g., a factory) for use.

[0084] Furthermore, the above-described embodiments and modifications may be appropriately combined.

[0085] For example, in the carbon dioxide recovery system 1 in which the container 11 is fixed inside the lift passage P as in the second embodiment, the adsorbent 12 may be circulated as described in the third embodiment.

[0086] The control panel 25 includes a computer system. Furthermore, a program for implementing the functions of the various components of the carbon dioxide recovery system 1 may be stored on a computer-readable recording medium, and the computer system may read and execute the program stored on the recording medium to perform the processing in the control panel 25. Furthermore, hardware other than the control panel 25 may also perform the aforementioned processing.

[0087] Here, "causing a computer system to read and execute a program recorded in a recording medium" includes installing the program in the computer system. The "computer system" mentioned here includes hardware such as an OS and peripheral devices.

[0088] Furthermore, a "computer system" may also include multiple computer devices connected via a network, including the Internet, a WAN, a LAN, or a dedicated line. Furthermore, a "computer-readable recording medium" refers to removable media such as floppy disks, magnetic optical disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into the computer system. Thus, the recording medium storing the program may also be a non-disposable recording medium such as a CD-ROM.

[0089] In addition, the recording medium also includes an internal or external recording medium that can be accessed from a delivery server in order to deliver the program. In addition, the program may be divided into multiple parts, which are downloaded at different times and then combined with the various structures possessed by the carbon dioxide recovery system 1. In addition, the delivery servers that deliver the divided programs may be different. In addition, the so-called "computer-readable recording medium" also includes a medium that keeps the program for a certain period of time, such as a server in the case of sending a program via a network or a volatile memory (RAM) inside a computer system that becomes a client. In addition, the above-mentioned program may also be a program for realizing a part of the above-mentioned functions. Moreover, it may also be a program that can realize the above-mentioned functions by combining with a program already recorded in the computer system, a so-called difference file (difference program).

[0090] Description of Reference Signs

[0091] 1...Carbon dioxide recovery system 10...Carbon dioxide recovery device 11...Container 12...Adsorbent 21...Elevator car compartment 21A...Second elevator car compartment 22...Counterweight 25...Control panel 25A...Second control panels A1, A2...Ventilation port F...Floor P...Elevator passage P1...Wall

Claims

1. A carbon dioxide recovery device, characterized in that: The carbon dioxide recovery device comprises: A container having air permeability and arranged in the hoistway of the elevator car room and outside the elevator car room or outside the counterweight; and The adsorbent is contained in the container and adsorbs carbon dioxide.

2. The carbon dioxide recovery device according to claim 1, characterized in that: The container is fixed to at least one of the upper side and the lower side of the elevator cage.

3. The carbon dioxide recovery device according to claim 1, characterized in that: The container is fixed inside the lifting channel.

4. A method for recovering carbon dioxide, characterized in that: The carbon dioxide recovery method has the following features: A filling step of filling an adsorbent to adsorb carbon dioxide into a container, wherein the container is air-permeable and is disposed in the elevator shaft of the elevator car room and outside the elevator car room or outside the counterweight; an adsorption step of bringing the adsorbent into contact with air containing carbon dioxide by raising and lowering the elevator car chamber, so that the carbon dioxide is adsorbed on the adsorbent; as well as The recovery step is to recover the adsorbent having adsorbed carbon dioxide from the container.

5. The carbon dioxide recovery method according to claim 4, characterized in that: In the filling step, the container is filled with the adsorbent so that the loading rate of the elevator car room is 50%.

6. The carbon dioxide recovery method according to claim 4 or 5, characterized in that: The carbon dioxide recovery method further includes a high concentration step in which the carbon dioxide concentration in the lift passage is increased by sending air from the floor to the lift passage.

7. A carbon dioxide recovery system, characterized in that: The carbon dioxide recovery system comprises: The carbon dioxide recovery device according to any one of claims 1 to 3; the elevator car compartment; said counterweight; and A control panel controls the lifting and lowering of the elevator car chamber.

8. The carbon dioxide recovery system according to claim 7, characterized in that: The control panel fills the container with the adsorbent when the loading rate of the elevator car room is 50% or less.

9. The carbon dioxide recovery system according to claim 7 or 8, characterized in that: When the stop time of the elevator car room exceeds a threshold value, the control panel causes the elevator car room to move up or down.

10. The carbon dioxide recovery system according to any one of claims 7 to 9, characterized in that: The carbon dioxide recovery system also has: a second elevator car compartment; and A second control panel controls the raising and lowering of the second elevator car chamber, The second control panel communicates with the control panel, and raises or lowers the second elevator car room when the elevator car room is stopped.

11. The carbon dioxide recovery system according to any one of claims 7 to 10, characterized in that: External air is taken into the ascending and descending passage from a ventilation port provided in the ascending and descending passage.

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