Atmospheric carbon dioxide separation recovery facility

Abstract

To provide an atmospheric carbon dioxide separation recovery facility that can execute regeneration processing to adsorbent using low-temperature vapor.SOLUTION: An atmospheric carbon dioxide separation recovery facility comprises: adsorption processing chambers that execute adsorption processing for making particulate adsorbent adsorb carbon dioxide included in the atmosphere, by bringing the atmosphere into contact with the adsorbent stored therein; and a regeneration processing chamber which executes regeneration processing for desorbing carbon dioxide from the adsorbent, by bringing low-temperature vapor into contact with the adsorbent in a state where pressure of the inside of the chamber is set to negative pressure. The adsorption processing chambers take adsorbent subjected to the regeneration processing in the regeneration processing chamber thereinto, and execute the adsorption processing using the taken-in adsorbent. The regeneration processing chamber takes the adsorbent used for the adsorption processing in the adsorption processing chambers thereinto, and executes the regeneration processing to the taken-in adsorbent.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to an atmospheric carbon dioxide separation and recovery facility for separating and recovering carbon dioxide from the atmosphere.

Background Art

[0002] Patent Document 1 below discloses a technique for adsorbing carbon dioxide in the air to a particulate adsorbent and then separating carbon dioxide from the adsorbent using steam, which is a form of process heat, to regenerate the adsorbent.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In an atmospheric carbon dioxide separation and recovery facility, if high-temperature steam is used for the regeneration treatment of the adsorbent, the adsorbent can be efficiently regenerated. However, a large amount of energy is required to generate high-temperature steam, and if carbon dioxide is emitted to obtain that energy, it will go against the original purpose. Also, for example, even if high-temperature steam can be generated using the waste heat of some equipment, high-temperature steam has a high utilization value and will be in competition with other equipment. Therefore, an object of the present disclosure is to provide an atmospheric carbon dioxide separation and recovery facility capable of regenerating the adsorbent using low-temperature steam.

Means for Solving the Problems

[0005] An atmospheric carbon dioxide separation and recovery facility according to one aspect of the present disclosure includes an adsorption treatment chamber that performs an adsorption treatment of adsorbing carbon dioxide contained in the atmosphere to an adsorbent by bringing the atmosphere into contact with a particulate adsorbent accommodated therein, and a regeneration treatment chamber that performs a regeneration treatment of desorbing carbon dioxide from the adsorbent by bringing a low-temperature vapor into contact with the adsorbent in a state where the inside is under negative pressure. The adsorption treatment chamber takes in the adsorbent regenerated in the regeneration treatment chamber and performs the adsorption treatment using the taken-in adsorbent. The regeneration treatment chamber takes in the adsorbent used for the adsorption treatment in the adsorption treatment chamber and performs the regeneration treatment on the taken-in adsorbent.

Effect of the Invention

[0006] According to this configuration, it is possible to provide an atmospheric carbon dioxide separation and recovery facility capable of regenerating an adsorbent using a low-temperature vapor.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Mode for Carrying Out the Invention

[0008] (Overall Configuration) Hereinafter, embodiments will be described. First, the overall configuration of an atmospheric carbon dioxide separation and recovery facility (hereinafter referred to as "separation and recovery facility") 100 according to the embodiment will be described. FIG. 1 is a conceptual diagram of the separation and recovery facility 100. The separation and recovery facility 100 is a facility for separating and recovering carbon dioxide from the atmosphere. That is, the separation and recovery facility 100 is a Direct Air Capture (DAC) facility.

[0009] As shown in FIG. 1, the separation and recovery facility 100 includes an adsorption treatment chamber 10, a regeneration treatment chamber 20, a temperature adjustment device 30, and a suction device 40. Hereinafter, these components will be described in order.

[0010] <Adsorption treatment chamber> The adsorption treatment chamber 10 is a room that performs an adsorption treatment for adsorbing carbon dioxide in the atmosphere onto an adsorbent. In FIG. 1, two adsorption treatment chambers 10 are depicted, but the number of adsorption treatment chambers 10 included in the separation and recovery facility 100 is not limited. The adsorbent used for the adsorption treatment is the adsorbent that has been regenerated in the regeneration treatment chamber 20 described later. The adsorption treatment chamber 10 takes in the adsorbent regenerated in the regeneration treatment chamber 20 and performs the adsorption treatment using the taken-in adsorbent. The air passes through the inside of the adsorption treatment chamber 10 in which the adsorbent is accommodated and comes into contact with the adsorbent. As a result, carbon dioxide in the atmosphere is adsorbed by the adsorbent and recovered.

[0011] The adsorbent of the present embodiment is in a particulate form and is obtained by impregnating a porous carrier with an amine. However, the adsorbent is not limited to the above. The adsorbent has the characteristics that the amount of carbon dioxide that can be adsorbed increases as the temperature decreases, and the amount of carbon dioxide that can be adsorbed increases as the ambient pressure increases. Therefore, the carbon dioxide adsorbed on the adsorbent desorbs from the adsorbent as the temperature of the adsorbent is increased, and also desorbs from the adsorbent when the ambient pressure is decreased.

[0012] The adsorption treatment chamber 10 has a plate-like shape and extends along the vertical direction. The adsorption treatment chamber 10 includes an inflow surface 11 corresponding to one main surface and an outflow surface 12 corresponding to the other main surface. FIG. 2 is a view of the adsorption treatment chamber 10 seen from the inflow surface 11 side, and FIG. 3 is a view of the adsorption treatment chamber 10 seen from the outflow surface 12 side. The inflow surface 11 and the outflow surface 12 are formed of, for example, a net-like member. As shown in FIG. 2, the air flows into the adsorption treatment chamber 10 from the outside of the adsorption treatment chamber 10 through the inflow surface 11. Also, as shown in FIG. 3, the air that has flowed into the adsorption treatment chamber 10 passes through the gaps between the adsorbents and flows out of the adsorption treatment chamber 10 through the outflow surface 12.

[0013] The adsorption treatment chamber 10 includes a supply port 13 for taking in the adsorbent and a discharge port 14 for discharging the used adsorbent. In the present embodiment, the supply port 13 is located at the upper end portion of the adsorption treatment chamber 10, and the discharge port 14 is located at the lower end portion of the adsorption treatment chamber 10. As shown in FIG. 1, the adsorbent discharged from the adsorption treatment chamber 10 is transferred to the regeneration treatment chamber 20 by the transfer device 15 and supplied to the regeneration treatment chamber 20. The transfer device 15 is, for example, a bucket conveyor or an air conveyor. However, when the regeneration treatment chamber 20 is located below the adsorption treatment chamber 10, the adsorbent may be supplied from the adsorption treatment chamber 10 to the regeneration treatment chamber 20 using the self-weight of the adsorbent.

[0014] <Regeneration treatment chamber> The regeneration treatment chamber 20 is a room for performing a regeneration treatment for desorbing carbon dioxide from the adsorbent. The adsorbent to be subjected to the regeneration treatment is the adsorbent used for the adsorption treatment in the adsorption treatment chamber 10. The regeneration treatment chamber 20 takes in the adsorbent used for the adsorption treatment in the adsorption treatment chamber 10 and performs a regeneration treatment by bringing steam into contact with the taken-in adsorbent. The regeneration treatment chamber 20 of the present embodiment is a sealable container. The regeneration treatment chamber 20 includes a supply port 21 for taking in the adsorbent used for the adsorption treatment and a discharge port 22 for discharging the regenerated adsorbent. In the present embodiment, the supply port 21 is located at the upper end portion of the regeneration treatment chamber 20, and the discharge port 22 is located at the lower end portion of the regeneration treatment chamber 20.

[0015] The carbon dioxide desorbed from the adsorbent by the regeneration treatment is discharged by the discharge pump 23 to a carbon dioxide holder or the like (not shown). The regeneration treatment chamber 20 may be located below the adsorption treatment chamber 10, may be located above the adsorption treatment chamber 10, or may be located at the same height position as the adsorption treatment chamber 10.

[0016] As a regeneration method, there is a method of raising the temperature of the adsorbent. In this method, generally, indirect heating is performed to heat the adsorbent by applying heat to the wall surface of the tower that houses the adsorbent. However, in such indirect heating, it is difficult for heat to be transferred to the adsorbent located near the center of the tower. Moreover, when the adsorbent is in particulate form, heat is transferred to each adsorbent through the contact points of adjacent adsorbents, resulting in poor heat transfer efficiency. In contrast, in the present embodiment, since regeneration is performed using steam, the steam can enter the gaps between the adsorbents and directly heat the particulate adsorbents. Therefore, the heat utilization efficiency is higher compared to indirect heating. However, to perform regeneration only by heating, steam at a high temperature of about 100°C is required. Such high-temperature steam requires a large amount of energy for generation. Also, even if high-temperature steam can be generated using waste heat from some equipment, since high-temperature steam has high utilization value as a heat source, it will be in competition with other equipment such as power generation equipment.

[0017] Therefore, in the present embodiment, as a regeneration method, in addition to the method of raising the temperature of the adsorbent using steam, a method of reducing the pressure around the adsorbent is also implemented in combination to suppress the temperature of the steam used. Specifically, the adsorbent supplied from the adsorption treatment chamber 10 is taken into the interior of the regeneration treatment chamber 20, and low-temperature steam is brought into contact with the taken-in adsorbent in a state where the interior of the regeneration treatment chamber 20 is under negative pressure. To create a negative pressure inside the regeneration treatment chamber 20, for example, an exhaust pump 23 that discharges carbon dioxide from the regeneration treatment chamber 20 can be used. Note that the "low-temperature steam" is, for example, steam at 100°C or lower.

[0018] In the present embodiment, in order to make the pressure inside the regeneration treatment chamber 20 negative, even if the steam used for regeneration is at a low temperature, carbon dioxide can be sufficiently desorbed from the adsorbent. And by using low-temperature steam for regeneration, when generating steam, the energy required for steam generation can be reduced, and when there is unused low-temperature steam, that low-temperature steam can be utilized. Therefore, the energy consumption of the entire separation and recovery facility 100 can be suppressed.

[0019] Furthermore, by using low-temperature steam for the regeneration process, a secondary effect of suppressing the deterioration of the adsorbent can be expected. In the adsorbent carrying amine, the carbon dioxide absorption capacity decreases due to deterioration such as the volatilization, thermal degradation, and oxidative degradation of the amine. However, the lower the temperature of the steam used, the more these deteriorations are suppressed. Therefore, according to the present embodiment, the replacement frequency of the adsorbent is reduced compared to the case of performing a general regeneration process using a high-temperature heat source.

[0020] The regenerated adsorbent is discharged from the discharge port 22 of the regeneration chamber 20. The adsorbent discharged from the regeneration chamber 20 is transferred to the adsorption chamber 10 by the transfer device 24 and supplied to the adsorption chamber 10. The transfer device 24 is, for example, a bucket conveyor or an air conveyor. However, when the adsorption chamber 10 is located below the regeneration chamber 20, the adsorbent may be supplied from the regeneration chamber 20 to the adsorption chamber 10 by utilizing the self-weight of the adsorbent.

[0021] Also, unlike the present embodiment, in a facility where the adsorption process and the regeneration process are carried out in the same processing chamber, since the atmosphere passes through the inside during the absorption process and the processing chamber is cooled, reheating of the cooled processing chamber by steam or a heating device is required during the subsequent regeneration process. On the other hand, in the present embodiment, since the processing chambers are separated, the above-mentioned reheating is not required, and the energy consumption can be suppressed.

[0022] <Temperature adjustment device> The temperature adjustment device 30 is a device for keeping the regeneration chamber 20 warm or heating it. The temperature adjustment device 30 of the present embodiment heats the regeneration chamber 20 so that the internal temperature of the regeneration chamber 20 becomes equal to or higher than a specified value during the regeneration process. The specified value here is, for example, 50 to 100 °C. Thereby, while further suppressing the energy of the steam used, carbon dioxide can be sufficiently desorbed from the adsorbent.

[0023] <Suction device> The suction device 40 is a device that sucks the air inside the adsorption treatment chamber 10. As shown in FIG. 3, the suction device 40 is located outside the adsorption treatment chamber 10 and on the side of the outflow surface 12. The suction device 40 in the present embodiment is, for example, a fan or the like, but the suction device 40 is not limited thereto, and may be, for example, a negative pressure tank or a pipe connected to a negative pressure chimney. Note that the separation and recovery facility 100 may be provided with a blower device such as a fan that supplies air to the inflow surface 11 of the adsorption treatment chamber 10 instead of the suction device 40.

[0024] The suction device 40 sucks the air inside the adsorption treatment chamber 10 through the outflow surface 12 of the adsorption treatment chamber 10, so that air flows into the adsorption treatment chamber 10 from the outside of the adsorption treatment chamber 10 through the inflow surface 11. Thus, in the present embodiment, instead of a blower device that blows air toward the inflow surface 11 of the adsorption treatment chamber 10, the suction device 40 is used to allow air to flow into the adsorption treatment chamber 10.

[0025] Therefore, according to the present embodiment, the temperature rise of the air flowing into the adsorption treatment chamber 10 can be prevented due to the passage of the blower device. As described above, the adsorbent is more likely to adsorb carbon dioxide as the temperature is lower. In the present embodiment, since air with a relatively low temperature flows into the adsorption treatment chamber 10, the temperature rise of the adsorbent due to the air is suppressed, and the adsorption treatment can be efficiently performed.

[0026] (Operation of the separation and recovery facility) Next, the operation of the separation and recovery facility 100 will be described. Here, for the sake of simplicity, it is assumed that the separation and recovery facility 100 includes two adsorption treatment chambers 10 and one regeneration treatment chamber 20. Also, the volume of each adsorption treatment chamber 10 is assumed to be equal to the volume of the regeneration treatment chamber 20. Further, the adsorption treatment time is assumed to be twice the regeneration treatment time. Specifically, the adsorption treatment time is set to 2 hours and the regeneration treatment time is set to 1 hour. The "adsorption treatment time" as used herein refers to the time of the adsorption treatment performed using the adsorbent until the adsorption treatment chamber 10 takes in and discharges the adsorbent. The "regeneration treatment time" refers to the time of the regeneration treatment performed on the adsorbent until the regeneration treatment chamber 20 takes in and discharges the adsorbent.

[0027] First, the separation and recovery facility 100 simultaneously performs the adsorption process and the regeneration process. The adsorption process is respectively carried out in two adsorption chambers 10. Specifically, with both adsorption chambers 10 containing the adsorbent, the corresponding suction devices 40 are driven for each. Thereby, the atmosphere flows into both adsorption chambers 10 and passes through the interior, and carbon dioxide in the atmosphere is adsorbed and recovered by the adsorbent.

[0028] On the other hand, in the regeneration process, the adsorbent used in the adsorption process is accommodated in the regeneration chamber 20, and the regeneration chamber 20 is sealed. Then, with the interior of the regeneration chamber 20 in a negative pressure state, low-temperature steam is supplied to the regeneration chamber 20. Thereby, carbon dioxide desorbs from the adsorbent, and the adsorbent is regenerated. At this time, the temperature adjustment device 30 maintains the temperature in the regeneration chamber 20 at or above a specified value by keeping the regeneration chamber 20 warm or heating it.

[0029] Subsequently, when the regeneration process is carried out for 1 hour and the regeneration process ends, the suction device 40 corresponding to one of the two adsorption chambers 10 is stopped, and the adsorption process in the said one adsorption chamber 10 ends. At this time, the adsorption process in the other adsorption chamber 10 among the two adsorption chambers 10 continues.

[0030] The adsorption chamber 10 in which the adsorption process has ended discharges all of the adsorbent used in the adsorption process and supplies it to the regeneration chamber 20. At the same time, the regeneration chamber 20 discharges all of the regenerated adsorbent and supplies it to the adsorption chamber 10 in which the adsorption process has ended. That is, the adsorbent is exchanged between the adsorption chamber 10 in which the adsorption process has ended and the regeneration chamber 20.

[0031] Subsequently, the regeneration process is resumed in the regeneration processing chamber 20, and the adsorption process is resumed in the adsorption processing chamber 10 where the adsorbent is replaced. Then, when the regeneration process is carried out for 1 hour and the regeneration process ends, the adsorbent is replaced between the adsorption processing chamber 10 different from the one where the adsorbent was replaced and the regeneration processing chamber 20. After the replacement of the adsorbent is completed, the regeneration process is resumed in the regeneration processing chamber 20, and the adsorption process is resumed in the adsorption processing chamber 10 where the adsorbent is replaced.

[0032] In this way, by alternately replacing the adsorbent in the two adsorption processing chambers 10 every hour, the adsorbent is replaced every hour in the regeneration processing chamber 20, and the adsorbent is replaced every two hours in each adsorption processing chamber 10. By repeating the above cycle, even when the adsorption processing time (2 hours in the above example) and the regeneration processing time (1 hour in the above example) are different, the adsorption process and the regeneration process can be carried out continuously.

[0033] As described above, the operation of the separation and recovery facility 100 has been described, but the operation of the separation and recovery facility 100 is not limited to the above. For example, in the above, all the adsorbents in the adsorption processing chamber 10 are replaced at once, but the adsorbent in the adsorption processing chamber 10 may be replaced in multiple times. Further, the absorbent discharged from the regeneration processing chamber 20 may be temporarily stored in a container (not shown) and supplied from the container to the adsorption processing chamber 10.

[0034] Also, in the above, the adsorption processing time was twice the regeneration processing time, but the adsorption processing time may be twice or more the regeneration processing time. The separation and recovery facility 100 according to the present embodiment adsorbs carbon dioxide in the atmosphere to the adsorbent, but the amount of carbon dioxide contained in the atmosphere is much less than the amount of carbon dioxide contained in the exhaust gas. Therefore, the adsorbent can sufficiently adsorb carbon dioxide even when exposed to the atmosphere for a long time. Therefore, by securing a long adsorption processing time as in the present embodiment, the ability of the adsorbent can be sufficiently exhibited, and efficient adsorption processing becomes possible.

[0035] Also, as described above, the separation and recovery facility 100 according to the present embodiment supplies the adsorbent regenerated in the regeneration processing chamber 20 directly to the adsorption processing chamber 10. That is, the adsorbent that has come into contact with the steam in the regeneration processing chamber 20 is supplied to the adsorption processing chamber 10 while being wet. In the separation and recovery facility 100 according to the present embodiment, since the adsorption processing time is long as described above, the adsorbent accommodated in the adsorption processing chamber 10 is exposed to the flowing air for a long time. Therefore, in the adsorption processing chamber 10, a drying process for drying the adsorbent using the air can be performed. Thus, according to the present embodiment, by performing the drying process simultaneously with the adsorption process in the adsorption processing chamber 10, the drying processing chamber can be omitted, the configuration of the separation and recovery facility 100 can be simplified, and the energy consumption of the separation and recovery facility 100 can also be suppressed.

[0036] (Summary) The first item disclosed in this specification is an atmospheric carbon dioxide separation and recovery facility including an adsorption processing chamber that performs an adsorption process of adsorbing carbon dioxide contained in the air to a particulate adsorbent accommodated therein by bringing the air into contact with the adsorbent, and a regeneration processing chamber that performs a regeneration process of desorbing carbon dioxide from the adsorbent by bringing low-temperature steam into contact with the adsorbent in a state where the inside is under negative pressure. The adsorption processing chamber takes in the adsorbent regenerated in the regeneration processing chamber and performs an adsorption process using the taken-in adsorbent. The regeneration processing chamber takes in the adsorbent used for the adsorption process in the adsorption processing chamber and performs a regeneration process on the taken-in adsorbent.

[0037] According to this configuration, even if the steam used is at a low temperature, carbon dioxide can be sufficiently desorbed from the adsorbent. And by using low-temperature steam for the regeneration process, when generating the steam used for the regeneration process, the energy required for steam generation can be reduced, and when there is unused low-temperature steam, that low-temperature steam can be utilized. Therefore, the energy consumption of the entire atmospheric carbon dioxide separation and recovery facility can be suppressed.

[0038] The second item disclosed in this specification is the carbon dioxide separation and recovery facility in the atmosphere according to the first item, wherein in the adsorption treatment chamber, the adsorbent that has come into contact with steam in the regeneration treatment chamber is taken in wet, and the adsorbent taken in is brought into contact with the atmosphere, so that while performing the adsorption treatment, a drying treatment for drying the adsorbent taken in is also performed.

[0039] According to this configuration, since there is no need to provide a drying treatment chamber for performing the drying treatment separately from the adsorption treatment chamber, the configuration of the carbon dioxide separation and recovery facility in the atmosphere can be simplified, and the energy consumption of the carbon dioxide separation and recovery facility in the atmosphere can also be suppressed.

[0040] The third item disclosed in this specification is the carbon dioxide separation and recovery facility in the atmosphere according to the first item, wherein the adsorption treatment time for performing the adsorption treatment using the adsorbent until the adsorbent is taken in and discharged in the adsorption treatment chamber is 2 times or more the regeneration treatment time for performing the regeneration treatment on the adsorbent until the adsorbent is taken in and discharged in the regeneration treatment chamber.

[0041] According to this configuration, by ensuring a long adsorption treatment time, an efficient adsorption treatment becomes possible.

[0042] The fourth item disclosed in this specification is the carbon dioxide separation and recovery facility in the atmosphere according to any one of the first to third items, which is provided with a temperature adjustment device for keeping the inside temperature of the regeneration treatment chamber at or above a specified value or heating the regeneration treatment chamber during the implementation of the regeneration treatment in the regeneration treatment chamber.

[0043] According to this configuration, it is possible to sufficiently desorb carbon dioxide from the adsorbent while further suppressing the temperature of the steam used.

[0044] Item 5 disclosed in this specification is the air carbon dioxide separation and recovery facility according to any one of Items 1 to 4, wherein the adsorption treatment chamber includes an inflow surface through which air flows from the outside of the adsorption treatment chamber into the inside of the adsorption treatment chamber, and an outflow surface through which air flows out from the inside of the adsorption treatment chamber to the outside of the adsorption treatment chamber, and the air carbon dioxide separation and recovery facility is located outside the adsorption treatment chamber and is provided with a suction device that sucks the air inside the adsorption treatment chamber through the outflow surface, thereby allowing air to flow into the adsorption treatment chamber from the outside of the adsorption treatment chamber through the inflow surface.

[0045] According to this configuration, the temperature of the air flowing into the adsorption treatment chamber can be suppressed, so that the temperature rise of the adsorbent can be suppressed, and the adsorption treatment can be efficiently performed.

Explanation of Reference Numerals

[0046] 10 Adsorption treatment chamber 11 Inflow surface 12 Outflow surface 13 Supply port 14 Discharge port 15 Transfer device 20 Regeneration treatment chamber 21 Supply port 22 Discharge port 23 Discharge pump 24 Transfer device 30 Temperature adjustment device 40 Suction device 100 Air carbon dioxide separation and recovery facility

Claims

1. An adsorption treatment chamber that performs an adsorption treatment of adsorbing carbon dioxide contained in the atmosphere to an adsorbent by bringing the atmosphere into contact with a particulate adsorbent accommodated therein, A regeneration treatment chamber that performs a regeneration treatment of desorbing carbon dioxide from the adsorbent by bringing low-temperature vapor into contact with the adsorbent in a state where the inside is under negative pressure, and is provided with, The adsorption treatment chamber takes in the adsorbent regenerated in the regeneration treatment chamber inside, and performs an adsorption treatment using the taken-in adsorbent, The regeneration treatment chamber takes in the adsorbent used for the adsorption treatment in the adsorption treatment chamber inside, and performs a regeneration treatment on the taken-in adsorbent, an atmospheric carbon dioxide separation and recovery facility.

2. In the adsorption treatment chamber, the adsorbent that has come into contact with the vapor in the regeneration treatment chamber is taken in while being wet, and the atmosphere is brought into contact with the taken-in adsorbent, so that the adsorption treatment is performed and at the same time the taken-in adsorbent is dried. The atmospheric carbon dioxide separation and recovery facility according to claim 1, which performs a drying treatment.

3. The adsorption treatment time for performing the adsorption treatment using the adsorbent until the adsorbent is taken in and discharged in the adsorption treatment chamber is 2 times or more the regeneration treatment time for performing the regeneration treatment on the adsorbent until the adsorbent is taken in and discharged in the regeneration treatment chamber. The atmospheric carbon dioxide separation and recovery facility according to claim 1.

4. During the regeneration treatment in the regeneration treatment chamber, a temperature adjustment device is provided for keeping the regeneration treatment chamber warm or heating it so that the internal temperature of the regeneration treatment chamber becomes a specified value or more. The atmospheric carbon dioxide separation and recovery facility according to claim 1.

5. The adsorption treatment chamber includes an inflow surface through which the atmosphere flows from the outside of the adsorption treatment chamber into the inside of the adsorption treatment chamber, and an outflow surface through which the atmosphere flows out from the inside of the adsorption treatment chamber to the outside of the adsorption treatment chamber. The atmospheric carbon dioxide separation and recovery facility is located outside the adsorption treatment chamber, and is provided with a suction device that sucks the atmosphere inside the adsorption treatment chamber through the outflow surface, thereby allowing the atmosphere to flow into the adsorption treatment chamber from the outside of the adsorption treatment chamber through the inflow surface. The atmospheric carbon dioxide separation and recovery facility according to claim 1.

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