Atmospheric carbon dioxide separation recovery facility

Abstract

To provide an atmospheric carbon dioxide separation recovery facility that can prevent a conveying device or the like that conveys adsorbent from being troubled.SOLUTION: An atmospheric carbon dioxide separation recovery facility comprises: adsorption processing chambers that execute adsorption processing for making particulate adsorbent adsorb carbon dioxide contained in the atmosphere, by bringing the atmosphere into contact with the adsorbent stored therein; a regeneration processing chamber which is positioned above the adsorption processing chamber, and executes regeneration processing for desorbing carbon dioxide from the adsorbent, by bringing vapor into contact with the particulate adsorbent stored therein; and a conveying device that conveys adsorbent ejected from the adsorption processing chambers to the regeneration processing chamber. The adsorption processing chambers take the adsorbent subjected to 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 system for adsorbing carbon dioxide in air using an adsorbent. Among them, FIG. 11a of Patent Document 1 discloses a system in which the adsorbent that has adsorbed carbon dioxide is regenerated by contacting it with steam, and the regenerated adsorbent is lifted vertically and returned to the container where the adsorption process is performed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When performing a regeneration process using steam, a large amount of moisture adheres to the adsorbent. However, in a system for separating and recovering carbon dioxide in the "atmosphere", unlike a system for separating and recovering carbon dioxide in "exhaust gas", a drying process for drying the adsorbent is not performed. This is because, during the adsorption process, a large amount of air is blown into the adsorbent, and the adsorbent is dried by this blowing of air.

[0005] Since no drying process is performed even in the system described in Patent Document 1, a large amount of moisture adheres to the adsorbent that is transported to the container where the adsorption process is performed. If such an adsorbent with a large amount of moisture attached is transported by a transport device, there is a risk of trouble occurring in the transport device and the surrounding equipment.

[0006] Therefore, an object of the present disclosure is to provide an atmospheric carbon dioxide separation and recovery facility capable of suppressing troubles in a conveying device or the like that conveys an adsorbent.

Means for Solving the Problems

[0007] An atmospheric carbon dioxide separation and recovery facility according to an aspect of the present disclosure includes an adsorption treatment chamber that performs an adsorption treatment of adsorbing carbon dioxide contained in the atmosphere to a particulate adsorbent accommodated therein by bringing the atmosphere into contact with the particulate adsorbent; a regeneration treatment chamber that is located above the adsorption treatment chamber and performs a regeneration treatment of desorbing carbon dioxide from the adsorbent by bringing steam into contact with the particulate adsorbent accommodated therein; and a conveying device that conveys the adsorbent discharged from the adsorption treatment chamber to the regeneration treatment chamber. The adsorption treatment chamber takes in the adsorbent regenerated in the regeneration treatment chamber therein 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 therein and performs a regeneration treatment on the taken-in adsorbent.

Advantages of the Invention

[0008] According to this configuration, troubles in a conveying device or the like that conveys an adsorbent can be suppressed.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0010] (First Embodiment) Hereinafter, the embodiments will be described. First, a carbon dioxide separation and recovery facility (hereinafter referred to as the "separation and recovery facility") 100 according to the first embodiment will be described. FIG. 1 is a schematic view of the separation and recovery facility 100 according to the first embodiment, as viewed from the front side. Further, FIG. 2 is a schematic view of the separation and recovery facility 100 according to the first embodiment, as viewed from the back side.

[0011] The separation and recovery facility 100 includes an adsorption treatment chamber 10, a regeneration treatment chamber 20, a suction device 30, and a transfer device 40. Hereinafter, these components will be described in order.

[0012] <Adsorption Treatment Chamber> The adsorption treatment chamber 10 is a room for performing an adsorption treatment for adsorbing carbon dioxide contained in the atmosphere onto an adsorbent. The adsorbent used for the adsorption treatment is the adsorbent 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 an adsorption treatment using the taken-in adsorbent. The atmosphere comes into contact with the adsorbent by passing through the inside of the adsorption treatment chamber 10 in which the adsorbent is accommodated. As a result, carbon dioxide in the atmosphere is adsorbed onto the adsorbent and recovered. The adsorbent in the present embodiment is in a particulate form, and an adsorbent in which an amine is impregnated in a porous carrier is used. However, the adsorbent is not limited to the above.

[0013] The adsorption processing chamber 10 of this embodiment has a plate-like shape perpendicular to the horizontal direction. The adsorption processing chamber 10 includes an inflow surface 11 corresponding to one main surface as shown in FIG. 1, and an outflow surface 12 corresponding to the other main surface as shown in FIG. 2. The inflow surface 11 and the outflow surface 12 are formed of, for example, a net-like member and can allow air to pass through. As shown in FIG. 1, air flows into the adsorption processing chamber 10 from the outside of the adsorption processing chamber 10 through the inflow surface 11. Further, as shown in FIG. 2, the air that has flowed into the adsorption processing chamber 10 passes through the gaps between the adsorbents and flows out of the adsorption processing chamber 10 through the outflow surface 12. In this embodiment, the inflow surface 11 and the outflow surface 12 are parallel to each other.

[0014] Here, the distance from the inflow surface 11 to the outflow surface 12 is referred to as the "passage distance D", the longitudinal dimensions of the inflow surface 11 and the outflow surface 12 are respectively referred to as the "longitudinal dimension L1" and the "longitudinal dimension L2", and the dimensions in the direction perpendicular to the longitudinal direction of the inflow surface 11 and the outflow surface 12 are respectively referred to as the "width dimension W1" and the "width dimension W2". Then, the passage distance D is smaller than the longitudinal dimension L1 and the width dimension W1 of the inflow surface 11, and is smaller than the longitudinal dimension L2 and the width dimension W2 of the outflow surface 12.

[0015] Also, the longitudinal dimension L1 of the inflow surface 11 is larger than the width dimension W1, and the longitudinal dimension L2 of the outflow surface 12 is larger than the width dimension W2. In this embodiment, the inflow surface 11 and the outflow surface 12 extend in the vertical direction. Therefore, the longitudinal dimension L1 of the inflow surface 11 and the longitudinal dimension L2 of the outflow surface 12 respectively coincide with the height of the inflow surface 11 and the height of the outflow surface 12. Also, the width dimension W1 of the inflow surface 11 and the width dimension W2 of the outflow surface 12 respectively coincide with the lateral width of the inflow surface 11 and the lateral width of the outflow surface 12.

[0016] However, when the inflow surface 11 and the outflow surface 12 are inclined with respect to the vertical direction or have a horizontally long shape, the longitudinal dimension L1 of the inflow surface 11 and the longitudinal dimension L2 of the outflow surface 12 do not necessarily coincide with the height of the inflow surface 11 and the height of the outflow surface 12 respectively, and the width dimension W1 of the inflow surface 11 and the width dimension W2 of the outflow surface 12 do not necessarily coincide with the lateral width of the inflow surface 11 and the lateral width of the outflow surface 12 respectively.

[0017] Note that the vertical dimension L1 of the inflow surface 11 may be the same as or different from the vertical dimension L2 of the outflow surface 12. Similarly, the width dimension W1 of the inflow surface 11 may be the same as or different from the width dimension W2 of the outflow surface 12. Also, although the inflow surface 11 and the outflow surface 12 of the present embodiment are rectangular, the inflow surface 11 and the outflow surface 12 may have a shape other than rectangular. Furthermore, the inflow surface 11 and the outflow surface 12 may have different shapes from each other.

[0018] Also, the adsorbents in the adsorption treatment chamber 10 are sequentially replaced. The lower end portion of the adsorption treatment chamber 10 is connected to the discharge pipe 13, and the adsorbents in the adsorption treatment chamber 10 are discharged through the discharge pipe 13. A discharge valve 14 is provided in the discharge pipe 13. By opening this discharge valve 14, the adsorbents in the adsorption treatment chamber 10 can be discharged, and by closing the discharge valve 14, the discharge of the adsorbents in the adsorption treatment chamber 10 can be stopped.

[0019] <Regeneration treatment chamber> The regeneration treatment chamber 20 is a chamber 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. Note that the regeneration treatment chamber 20 of the present embodiment is a sealable container. In the regeneration treatment of the present embodiment, in order to make the inside of the regeneration treatment chamber 20 negative pressure, the regeneration treatment chamber 20 is formed so as to be able to withstand negative pressure.

[0020] The upper end portion of the regeneration treatment chamber 20 is connected to the inlet portion 21, and the adsorbent is supplied to the regeneration treatment chamber 20 through this inlet portion 21. An inlet valve 22 is provided in the inlet portion 21. Also, the lower end portion of the regeneration treatment chamber 20 is connected to the outlet portion 23, and the adsorbent in the regeneration treatment chamber 20 is supplied to the adsorption treatment chamber 10 through this outlet portion 23. An outlet valve 24 is provided in the outlet portion 23.

[0021] Since the regeneration processing chamber 20 of this embodiment is located above the adsorption processing chamber 10, when the outlet valve 24 is opened, the adsorbent in the regeneration processing chamber 20 moves to the adsorption processing chamber 10 due to its own weight. Therefore, according to this embodiment, when moving the adsorbent in the regeneration processing chamber 20 to the adsorption processing chamber 10, a conveying device is not required, or even if a conveying device is used, a simple one is sufficient. Therefore, even if a large amount of moisture adheres to the adsorbent due to the regeneration process, there is no conveying device for conveying the adsorbent, or it is simple, so troubles of the conveying device and its peripheral equipment caused by the moisture adhering to the adsorbent are unlikely to occur.

[0022] Note that the volume of the regeneration processing chamber 20 is smaller than the volume of the adsorption processing chamber 10. For example, the volume of the regeneration processing chamber 20 is 1 / 2 or less of the volume of the adsorption processing chamber 10. Also, the volume of the regeneration processing chamber 20 may be about 1 / 6 or more and 1 / 4 or less of the volume of the adsorption processing chamber 10.

[0023] <Suction device> The suction device 30 is a device that suctions the air inside the adsorption processing chamber 10. As shown in FIG. 2, the suction device 30 is located outside the adsorption processing chamber 10 and on the outflow surface 12 side. The suction device 30 of this embodiment is, for example, a fan, etc., but the suction device 30 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 processing chamber 10 instead of the suction device 30.

[0024] The suction device 30 suctions the air inside the adsorption processing chamber 10 through the outflow surface 12 of the adsorption processing chamber 10, so that air flows into the adsorption processing chamber 10 from the outside of the adsorption processing chamber 10 through the inflow surface 11. Thus, in this embodiment, instead of a blower device that blows air toward the inflow surface 11 of the adsorption processing chamber 10, the suction device 30 is used to allow air to flow into the adsorption processing chamber 10.

[0025] Therefore, according to this embodiment, the air flowing into the adsorption treatment chamber 10 can prevent the temperature rise associated with passing through the blower device. Since the adsorbent is more likely to adsorb carbon dioxide as the temperature is lower, and in this embodiment, 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 carried out.

[0026] <Conveying device> The conveying device 40 is a device that conveys the adsorbent discharged from the adsorption treatment chamber 10 to the regeneration treatment chamber 20. The conveying device 40 receives the adsorbent discharged from the adsorption treatment chamber 10 through the discharge pipe 13 and lifts the received adsorbent. The lifted adsorbent is supplied to the regeneration treatment chamber 20 through the inlet portion 21. In the adsorption treatment, since the adsorbent comes into contact with a large amount of air, the adsorbent used in the adsorption treatment is dry. Therefore, troubles of the conveying device 40 and its peripheral equipment caused by the moisture adhering to the adsorbent can be avoided. As the conveying device 40, for example, a bucket conveyor or an air conveyor can be used.

[0027] <Operation of the separation and recovery facility> Next, the operation of the separation and recovery facility 100 will be described. The separation and recovery facility 100 performs an adsorption treatment in the adsorption treatment chamber 10. Specifically, the suction device 30 is driven with the adsorption treatment chamber 10 filled with the adsorbent. Thereby, air flows into the interior of the adsorption treatment chamber 10 from the inflow surface 11 by the suction device 30, and as the inflowing air passes through the adsorption treatment chamber 10, carbon dioxide in the air is adsorbed by the adsorbent.

[0028] Furthermore, simultaneously with this adsorption treatment, a regeneration treatment is performed on the adsorbent used in the adsorption treatment. Specifically, the adsorbent used in the adsorption treatment is filled into the regeneration treatment chamber 20, the inlet valve 22 and the outlet valve 24 are closed, and the regeneration treatment chamber 20 is sealed. In this state, steam is supplied to the regeneration treatment chamber 20. Thereby, carbon dioxide is desorbed from the adsorbent.

[0029] Subsequently, when the regeneration process is completed, the suction device 30 is temporarily stopped, the outlet valve 24 is opened, and the discharge valve 14 is opened. As a result, the regenerated adsorbent from the regeneration processing chamber 20 is supplied to the adsorption processing chamber 10, and the adsorbent that has adsorbed carbon dioxide is discharged from the adsorption processing chamber 10. At this time, not all of the adsorbent in the adsorption processing chamber 10 is discharged, but the same amount of adsorbent as that supplied to the adsorption processing chamber 10, that is, the same amount as the volume of the regeneration processing chamber 20, is discharged from the adsorption processing chamber 10. For example, when the volume of the regeneration processing chamber 20 is one-fifth of the adsorption processing chamber 10, one-fifth of the adsorbent in the adsorption processing chamber 10 is discharged. Then, the outlet valve 24 and the discharge valve 14 are closed.

[0030] Subsequently, simultaneously with or slightly after the adsorbent is discharged from the adsorption processing chamber 10, the conveying device 40 is operated and the inlet valve 22 is opened. As a result, the adsorbent discharged from the adsorption processing chamber 10 is conveyed to the regeneration processing chamber 20 and filled into the regeneration processing chamber 20. After the regeneration processing chamber 20 is filled with the adsorbent, the conveying device 40 is stopped and the inlet valve 22 is closed. Then, the suction device 30 is driven to resume the adsorption process, and steam is supplied to the regeneration processing chamber 20 to resume the regeneration process. In the separation and recovery facility 100, the above operations are taken as one cycle, and this cycle is repeated.

[0031] By repeating the above cycle, the adsorbent supplied to the adsorption processing chamber 10 moves downward and is discharged from the adsorption processing chamber 10. That is, the adsorption processing chamber 10 is configured to move the adsorbent taken in from the upper part downward and discharge it from the lower part. And each time the regeneration process by the regeneration processing chamber 20 is completed, the adsorption processing chamber 10 discharges an amount of adsorbent corresponding to the volume of the regeneration processing chamber 20 from the lower part. When the volume of the regeneration processing chamber 20 is one-fifth of the adsorption processing chamber 10, by repeating the above cycle five times, all of the adsorbent in the adsorption processing chamber 10 will be replaced. Thus, in this embodiment, the supply and discharge of the adsorbent to and from the adsorption processing chamber 10 are performed intermittently. That is, the adsorption process and the regeneration process can be carried out intermittently.

[0032] (Second embodiment) Next, a separation and recovery system 200 according to a second embodiment will be described. FIG. 3 is a schematic diagram of the separation and recovery system 200 according to the second embodiment, as viewed from the front side. The separation and recovery system 200 according to the second embodiment differs from the separation and recovery system 100 according to the first embodiment in that it includes an adsorption treatment standby chamber 50 and a regeneration treatment standby chamber 60. Apart from this, the separation and recovery system 200 according to the second embodiment basically has the same configuration as the separation and recovery system 100 according to the first embodiment. Therefore, the adsorption treatment standby chamber 50 and the regeneration treatment standby chamber 60 will be described in detail below.

[0033] <Adsorption treatment waiting room> The adsorption treatment standby chamber 50 is a chamber that stores the adsorbent before adsorption treatment. The adsorption treatment standby chamber 50 is located below the regeneration treatment chamber 20 and above the adsorption treatment chamber 10. The adsorbent that has been regenerated in the regeneration treatment chamber 20 is temporarily stored in this adsorption treatment standby chamber 50 and then supplied to the adsorption treatment chamber 10. Therefore, even while regeneration treatment is being performed in the regeneration treatment chamber 20, the supply and discharge of adsorbent to the adsorption treatment chamber 10 can continue until the adsorbent in the adsorption treatment standby chamber 50 is used up.

[0034] Moreover, the adsorption treatment standby chamber 50 of this embodiment has the same or a larger volume than the regeneration treatment chamber 20. In other words, the adsorption treatment standby chamber 50 can accommodate an amount of adsorbent sufficient for one regeneration treatment or more. In this way, by adjusting the amount of adsorbent discharged from the adsorption treatment chamber 10 so that the "time required to discharge an amount of adsorbent sufficient for one regeneration treatment from the adsorption treatment chamber 10" matches the "time required for one regeneration treatment," the adsorption treatment chamber 10 can be kept filled with adsorbent regardless of when the regeneration treatment ends. Therefore, according to this embodiment, adsorption treatment can be performed continuously, and ultimately, efficiently.

[0035] In this embodiment, the adsorption treatment waiting chamber 50 and the adsorption treatment chamber 10 are integrally formed. However, the adsorption treatment waiting chamber 50 and the adsorption treatment chamber 10 may be separate. When the adsorption treatment waiting chamber 50 and the adsorption treatment chamber 10 are integrally formed, the region through which the atmosphere passes is the adsorption treatment chamber 10, and the region where the atmosphere does not pass is the adsorption treatment waiting chamber 50. For example, when the suction device 30 includes a plurality of fans 31, the region located above the uppermost fan 31 may be defined as the adsorption treatment waiting chamber 50.

[0036] <Regeneration treatment waiting chamber> The regeneration treatment waiting chamber 60 is a room for storing the adsorbent before regeneration treatment. The regeneration treatment waiting chamber 60 of this embodiment is located above the regeneration treatment chamber 20 and stores the adsorbent conveyed by the conveying device 40. Therefore, the adsorbent conveyed by the conveying device 40 is stored in this regeneration treatment waiting chamber 60 and then supplied to the regeneration treatment chamber 20. In this embodiment, the regeneration treatment waiting chamber 60 and the regeneration treatment chamber 20 are separate. Also, in this embodiment, the volume of the regeneration treatment waiting chamber 60 is the same as the volume of the regeneration treatment chamber 20. However, the volume of the regeneration treatment waiting chamber 60 may be different from the volume of the regeneration treatment chamber 20.

[0037] Since the separation and recovery facility 200 according to this embodiment is provided with the regeneration treatment waiting chamber 60, the adsorbent conveyed by the conveying device 40 can be stored in the regeneration treatment waiting chamber 60 while the regeneration treatment is being performed in the regeneration treatment chamber 20. By storing the adsorbent before regeneration treatment in the regeneration treatment waiting chamber 60 in this way, after the regeneration treatment is completed, the adsorbent to be subjected to the next regeneration treatment can be quickly supplied to the regeneration treatment chamber 20. Therefore, according to this embodiment, the regeneration treatment can be performed efficiently.

[0038] (Third Embodiment) Next, the separation and recovery facility 300 according to the third embodiment will be described. FIG. 4 is a schematic view of the separation and recovery facility 300 according to the third embodiment, as viewed from the front side. The separation and recovery facility 300 according to the third embodiment differs from the separation and recovery facility 100 according to the first embodiment in that the regeneration processing chamber 20 includes a first regeneration processing chamber 26 and a second regeneration processing chamber 27. That is, in the third embodiment, the regeneration processing chamber 20 is divided. Except for this point, the separation and recovery facility 300 according to the third embodiment basically has the same configuration as the separation and recovery facility 100 according to the first embodiment.

[0039] In the above-described first regeneration processing chamber 26 and second regeneration processing chamber 27, regeneration processing is performed independently of each other. The first regeneration processing chamber 26 and the second regeneration processing chamber 27 are connected in parallel, and the adsorbents regenerated in the first regeneration processing chamber 26 and the second regeneration processing chamber 27 are supplied to the same adsorption processing chamber 10. Therefore, if the regeneration processing in the first regeneration processing chamber 26 and the second regeneration processing chamber 27 is performed alternately, the time interval for supplying the adsorbent from the regeneration processing chamber 20 to the adsorption processing chamber 10 can be shortened, and thus the adsorption processing can be performed efficiently. Note that the regeneration processing chamber 20 of the present embodiment includes two regeneration processing chambers 26 and 27, but may include three or more regeneration processing chambers.

[0040] (Fourth Embodiment) Next, the separation and recovery facility 400 according to the fourth embodiment will be described. FIG. 5 is a schematic view of the separation and recovery facility 400 according to the fourth embodiment, as viewed from the front side. The separation and recovery facility 400 according to the fourth embodiment includes two adsorption processing chambers 10 arranged adjacent to each other in the width direction and two regeneration processing chambers 20 connected in parallel. That is, the separation and recovery facility 400 according to the fourth embodiment is similar to a structure in which two separation and recovery facilities 100 according to the first embodiment are combined. However, each regeneration processing chamber 20 of the separation and recovery facility 400 according to the present embodiment can supply the adsorbent to any of the two adsorption processing chambers 10.

[0041] According to the present embodiment, similar to the third embodiment, the time interval for supplying the adsorbent from the regeneration processing chamber 20 to the adsorption processing chamber 10 can be shortened, and the adsorption processing can be efficiently performed. Note that the separation and recovery facility 400 according to the present embodiment includes two adsorption processing chambers 10 and two regeneration processing chambers 20, respectively, but may include three or more adsorption processing chambers 10 and regeneration processing chambers 20, respectively.

[0042] The first to fourth embodiments have been described above. However, the separation and recovery facility disclosed in this specification is not limited to the above-described configuration. For example, the separation and recovery facilities 100, 200, 300, and 400 according to the above-described embodiments may be combined.

[0043] (Summary) The first item disclosed in this specification is an adsorption processing chamber that performs an adsorption process of adsorbing carbon dioxide contained in the atmosphere to the adsorbent by bringing the atmosphere into contact with a particulate adsorbent housed therein, a regeneration processing chamber that is located above the adsorption processing chamber and performs a regeneration process of desorbing carbon dioxide from the adsorbent by bringing steam into contact with the particulate adsorbent housed therein, and a transport device that transports the adsorbent discharged from the adsorption processing chamber to the regeneration processing chamber. The adsorption processing chamber takes in the adsorbent regenerated in the regeneration processing chamber therein 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 therein and performs a regeneration process on the taken-in adsorbent.

[0044] According to this configuration, since the transport device transports the dried adsorbent, troubles in the transport device and the like can be suppressed.

[0045] The second item disclosed in this specification is the carbon dioxide separation and recovery facility in the atmosphere according to the first item, wherein the volume of the regeneration processing chamber is 1 / 2 or less of the volume of the adsorption processing chamber.

[0046] According to this configuration, the cycles of the adsorption process and the regeneration process can be performed in good balance.

[0047] The third item disclosed in this specification is the atmospheric carbon dioxide separation and recovery facility according to the second item, wherein the adsorption treatment chamber is configured to move the adsorbent taken in from the upper part downward and discharge it from the lower part, and each time the regeneration treatment by the regeneration treatment chamber is completed, an amount of adsorbent corresponding to the volume of the regeneration treatment chamber is discharged from the lower part.

[0048] According to this configuration, the adsorption treatment and the regeneration treatment can be intermittently performed.

[0049] The fourth item disclosed in this specification is the atmospheric carbon dioxide separation and recovery facility according to any one of the first to third items, which is located above the adsorption treatment chamber, has the same volume as the regeneration treatment chamber or a larger volume than the regeneration treatment chamber, and includes an adsorption treatment waiting chamber for storing the adsorbent before the adsorption treatment.

[0050] According to this configuration, it is also possible to continuously perform the adsorption treatment, and the adsorption treatment can be efficiently performed.

[0051] The fifth item disclosed in this specification is the atmospheric carbon dioxide separation and recovery facility according to any one of the first to fourth items, which is located above the regeneration treatment chamber and includes a regeneration treatment waiting chamber for storing the adsorbent before the regeneration treatment conveyed by the conveying device.

[0052] According to this configuration, since the adsorbent can be quickly supplied to the regeneration treatment chamber, the regeneration treatment can be efficiently performed.

[0053] The sixth item disclosed in this specification is the atmospheric carbon dioxide separation and recovery facility according to any one of the first to fifth items, wherein the regeneration treatment chambers are connected in parallel, the regeneration treatments are performed independently of each other, and the regenerated adsorbents are supplied to the same adsorption treatment chamber, and it includes a first regeneration treatment chamber and a second regeneration treatment chamber.

[0054] According to this configuration, since the time interval for supplying the adsorbent from the regeneration processing chamber to the adsorption processing chamber can be shortened, the adsorption processing can be efficiently performed.

[0055] Item 7 disclosed in this specification is the carbon dioxide separation and recovery facility in the atmosphere according to any one of Items 1 to 6, wherein the adsorption processing chamber includes an inflow surface through which air flows from the outside of the adsorption processing chamber into the inside of the adsorption processing chamber, and an outflow surface through which air flows out from the inside of the adsorption processing chamber to the outside of the adsorption processing chamber.

[0056] According to this configuration, since a large amount of air can be taken into the adsorption processing chamber through the inflow surface, the adsorption processing can be efficiently performed.

[0057] Item 8 disclosed in this specification is the carbon dioxide separation and recovery facility in the atmosphere according to Item 7, which is provided with a plurality of suction devices that are located outside the adsorption processing chamber and suck the air inside the adsorption processing chamber through the outflow surface, thereby allowing air to flow from the outside of the adsorption processing chamber into the inside of the adsorption processing chamber through the inflow surface.

[0058] According to this configuration, by suppressing the temperature of the air flowing into the adsorption processing chamber, the temperature rise of the adsorbent can be suppressed, and the adsorption processing can be efficiently performed.

[0059] Item 9 disclosed in this specification is the carbon dioxide separation and recovery facility in the atmosphere according to Item 7 or 8, wherein the distance from the inflow surface to the outflow surface is smaller than the vertical dimension and the width dimension of the inflow surface, and is smaller than the vertical dimension and the width dimension of the outflow surface.

[0060] According to this configuration, while ensuring a volume of the adsorption processing chamber of a certain level or more, the pressure loss of the air in the adsorption processing chamber can be reduced by shortening the moving distance of the air in the adsorption processing chamber.

Explanation of Reference Numerals

[0061] 10 Adsorption processing chamber 11 Inflow surface 12 Outlet surface 20 Regeneration treatment chamber 26 First regeneration treatment chamber 27 Second regeneration treatment chamber 30 Suction device 40 Conveyor device 50 Adsorption treatment waiting chamber 60 Regeneration treatment waiting chamber 100 Atmospheric carbon dioxide separation and recovery equipment 200 Atmospheric carbon dioxide separation and recovery equipment 300 Atmospheric carbon dioxide separation and recovery equipment 400 Atmospheric carbon dioxide separation and recovery equipment

Claims

1. An adsorption treatment chamber that performs an adsorption treatment of adsorbing carbon dioxide contained in the atmosphere to the adsorbent by bringing the atmosphere into contact with a particulate adsorbent accommodated therein; A regeneration treatment chamber that is located above the adsorption treatment chamber and performs a regeneration treatment of desorbing carbon dioxide from the adsorbent by bringing steam into contact with the particulate adsorbent accommodated therein; A conveying device that conveys the adsorbent discharged from the adsorption treatment chamber to the regeneration treatment chamber, and The adsorption treatment chamber takes in the adsorbent regenerated in the regeneration treatment chamber therein 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 therein and performs a regeneration treatment on the taken-in adsorbent, an atmospheric carbon dioxide separation and recovery facility.

2. The atmospheric carbon dioxide separation and recovery facility according to Claim 1, wherein the volume of the regeneration treatment chamber is 1 / 2 or less of the volume of the adsorption treatment chamber.

3. The adsorption treatment chamber is configured to move the adsorbent taken in from the upper part downward and discharge it from the lower part, and each time the regeneration treatment by the regeneration treatment chamber is completed, an amount of adsorbent corresponding to the volume of the regeneration treatment chamber is discharged from the lower part. The atmospheric carbon dioxide separation and recovery facility according to Claim 2.

4. The atmospheric carbon dioxide separation and recovery facility according to Claim 1, further comprising an adsorption treatment waiting chamber that is located above the adsorption treatment chamber, has the same volume as the regeneration treatment chamber or a larger volume than the regeneration treatment chamber, and accommodates the adsorbent before the adsorption treatment.

5. The atmospheric carbon dioxide separation and recovery facility according to Claim 1, further comprising a regeneration treatment waiting chamber that is located above the regeneration treatment chamber and accommodates the adsorbent before the regeneration treatment conveyed by the conveying device.

6. The atmospheric carbon dioxide separation and recovery facility according to Claim 1, wherein the regeneration treatment chambers are connected in parallel, the regeneration treatments are performed independently of each other, and the regenerated adsorbents are supplied to the same adsorption treatment chamber, including a first regeneration treatment chamber and a second regeneration treatment chamber.

7. The adsorption treatment chamber includes an inflow surface through which the atmosphere flows into the adsorption treatment chamber from the outside of the adsorption treatment chamber, and an outflow surface through which the atmosphere flows out of the adsorption treatment chamber from the inside of the adsorption treatment chamber. The atmospheric carbon dioxide separation and recovery facility according to Claim 1.

8. A plurality of suction devices that are located outside the adsorption treatment chamber and suck 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. The carbon dioxide separation and recovery facility in the atmosphere according to claim 7.

9. The distance from the inflow surface to the outflow surface is smaller than the vertical dimension and the width dimension of the inflow surface, and is smaller than the vertical dimension and the width dimension of the outflow surface. The carbon dioxide separation and recovery facility in the atmosphere according to claim 7.

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