Carbon dioxide separation and recovery apparatus

Abstract

One aspect of the atmospheric carbon dioxide separation and recovery apparatus disclosed herein includes: a plurality of adsorption treatment chambers for adsorption treatment of carbon dioxide contained in the atmosphere by contacting the atmosphere with particulate adsorbent material housed therein; and a regeneration treatment chamber for regeneration treatment of carbon dioxide removal from the adsorbent material by contacting vapor with the particulate adsorbent material housed therein, wherein the plurality of adsorption treatment chambers take in the adsorbent material that has been regenerated in the regeneration treatment chamber and use the taken-in adsorbent material for adsorption treatment, and the regeneration treatment chamber takes in the adsorbent material used for adsorption treatment in the plurality of adsorption treatment chambers and regenerates the taken-in adsorbent material.

Description

Technical Field

[0001] This disclosure relates to atmospheric carbon dioxide separation and recovery equipment for separating and recovering carbon dioxide from the atmosphere. Background Technology

[0002] The following technologies are disclosed in Patent Document 1: a technology for adsorbing carbon dioxide in the air onto particulate adsorbent materials, and a technology for using vapor to separate carbon dioxide from adsorbent materials that have adsorbed carbon dioxide.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2022-20723 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In atmospheric carbon dioxide separation and recovery equipment, when using particulate adsorbent materials to perform adsorption treatment on the atmosphere, increasing the volume of the adsorption treatment chamber is considered to improve efficiency. However, if a large volume of adsorbent material is filled into the adsorption treatment chamber, the atmosphere will have difficulty flowing between the adsorbent materials, which may actually reduce the adsorption treatment efficiency.

[0008] Therefore, the purpose of this disclosure is to provide an atmospheric carbon dioxide separation and recovery device that can perform efficient adsorption treatment when using particulate adsorbent materials.

[0009] Methods for solving problems

[0010] One aspect of the atmospheric carbon dioxide separation and recovery apparatus disclosed herein includes: a plurality of adsorption treatment chambers for adsorption treatment of carbon dioxide contained in the atmosphere by contacting the atmosphere with particulate adsorbent material housed therein; and a regeneration treatment chamber for regeneration treatment of carbon dioxide removal from the adsorbent material by contacting vapor with the particulate adsorbent material housed therein, wherein the plurality of adsorption treatment chambers take in the adsorbent material that has been regenerated in the regeneration treatment chamber and use the taken-in adsorbent material for adsorption treatment, and the regeneration treatment chamber takes in the adsorbent material used for adsorption treatment in the plurality of adsorption treatment chambers and regenerates the taken-in adsorbent material.

[0011] Invention Effects

[0012] Based on this structure, an atmospheric carbon dioxide separation and recovery device can be provided that can perform efficient adsorption treatment when using particulate adsorbent materials. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the atmospheric carbon dioxide separation and recovery device according to the first embodiment, viewed from the front side.

[0014] Figure 2 This is a schematic diagram of the atmospheric carbon dioxide separation and recovery device according to the first embodiment, viewed from the rear side.

[0015] Figure 3 This is a schematic diagram of the atmospheric carbon dioxide separation and recovery device according to the second embodiment, viewed from the front side.

[0016] Figure 4 This is a schematic diagram of the atmospheric carbon dioxide separation and recovery device according to the third embodiment, viewed from the front side. Detailed Implementation

[0017] (First Embodiment)

[0018] The embodiments will now be described. First, the carbon dioxide separation and recovery device (hereinafter referred to as "separation and recovery device") 100 of the first embodiment will be described. Figure 1 This is a schematic diagram of the separation and recovery device 100 according to the first embodiment, viewed from the front side. Additionally, Figure 2 This is a schematic diagram of the separation and recycling device 100 according to the first embodiment, viewed from the rear side.

[0019] The separation and recovery device 100 is a device for separating and recovering carbon dioxide from the atmosphere. That is, the separation and recovery device 100 is a Direct Air Capture (DAC) device. The separation and recovery device 100 includes an adsorption treatment chamber 10, a regeneration treatment chamber 20, and an suction device 30. These components will be described in turn below.

[0020] <Adsorption Treatment Chamber>

[0021] The adsorption treatment chamber 10 is a chamber for performing adsorption treatment in which carbon dioxide contained in the atmosphere is adsorbed onto an adsorbent material. The adsorbent material used in the adsorption treatment is the same adsorbent material that has undergone regeneration treatment in the regeneration treatment chamber 20 (described later). The adsorption treatment chamber 10 takes the adsorbent material that has undergone regeneration treatment in the regeneration treatment chamber 20 into its interior and performs adsorption treatment using the taken-in adsorbent material. In this embodiment, the adsorbent material is in particulate form and is a material made by impregnating an amine onto a porous support. However, the adsorbent material is not limited to the adsorbent material described above.

[0022] The separation and recovery apparatus 100 of this embodiment has multiple adsorption treatment chambers 10. Furthermore, the number of adsorption treatment chambers 10 in the separation and recovery apparatus 100 is not limited. Each adsorption treatment chamber 10 is constructed in the same manner and has the same volume. Atmosphere passes through the interior of the adsorption treatment chamber 10 containing adsorbent material and comes into contact with the adsorbent material. As a result, carbon dioxide in the atmosphere is adsorbed onto the adsorbent material and recovered.

[0023] The adsorption treatment chamber 10 of this embodiment has a plate-like shape perpendicular to the horizontal direction. The adsorption treatment chamber 10 includes, for example... Figure 1 As shown, this is equivalent to a main surface inflow surface 11 and such Figure 2 As shown, this corresponds to another main surface, the outflow surface 12. The inflow surface 11 and the outflow surface 12 are formed, for example, by a mesh-like component, allowing air to pass through. Figure 1 As shown, air flows from the outside of the adsorption treatment chamber 10 into the interior of the adsorption treatment chamber 10 via the inflow surface 11. Additionally, as... Figure 2 As shown, the air flowing into the adsorption treatment chamber 10 passes through the gaps in the adsorption material and flows out to the outside of the adsorption treatment chamber 10 via the outflow surface 12. In addition, in this embodiment, the inflow surface 11 and the outflow surface 12 are parallel to each other.

[0024] Here, the distance from the inflow surface 11 to the outflow surface 12 is called the "through distance D". The longitudinal dimensions of the inflow surface 11 and the outflow surface 12 are called the "longitudinal dimension L1" and "longitudinal dimension L2", respectively. The dimensions of the inflow surface 11 and the outflow surface 12 in the direction perpendicular to the longitudinal direction are called the "width dimension W1" and "width dimension W2", respectively. Thus, the through distance D is smaller than the longitudinal dimension L1 and the width dimension W1 of the inflow surface 11, and smaller than the longitudinal dimension L2 and the width dimension W2 of the outflow surface 12. According to this structure, the volume of the adsorption treatment chamber 10 can be ensured to be more than a certain value, and the atmospheric pressure loss can be reduced by shortening the movement distance of the atmosphere within the adsorption treatment chamber 10.

[0025] Furthermore, the longitudinal dimension L1 of the inflow surface 11 is greater than the width dimension W1, and the longitudinal dimension L2 of the outflow surface 12 is greater than the width dimension W2. In this embodiment, the inflow surface 11 and the outflow surface 12 extend vertically. Therefore, the longitudinal dimension L1 of the inflow surface 11 and the longitudinal dimension L2 of the outflow surface 12 are respectively the same as the height of the inflow surface 11 and the height of the outflow surface 12. Additionally, the width dimension W1 of the inflow surface 11 and the width dimension W2 of the outflow surface 12 are respectively the same as the lateral width of the inflow surface 11 and the lateral width of the outflow surface 12.

[0026] However, when the inflow surface 11 and the outflow surface 12 are inclined relative to the vertical direction or have a horizontally elongated shape, the longitudinal dimension L1 of the inflow surface 11 and the longitudinal dimension L2 of the outflow surface 12 are not necessarily consistent with the height of the inflow surface 11 and the height of the outflow surface 12, respectively. The width dimension W1 of the inflow surface 11 and the width dimension W2 of the outflow surface 12 are not necessarily consistent with the lateral width of the inflow surface 11 and the lateral width of the outflow surface 12, respectively.

[0027] Furthermore, the longitudinal dimension L1 of the inflow surface 11 can be the same as or different from the longitudinal dimension L2 of the outflow surface 12. Similarly, the width dimension W1 of the inflow surface 11 can be the same as or different from the width dimension W2 of the outflow surface 12. In this embodiment, the inflow surface 11 and the outflow surface 12 are rectangular, but they can also have shapes other than rectangular. Moreover, the inflow surface 11 and the outflow surface 12 can have different shapes from each other.

[0028] The adsorbent material within the adsorption treatment chamber 10 is replaced sequentially. The adsorption treatment chamber 10 includes a supply port 13 for taking in adsorbent material and a discharge port 14 for discharging adsorbent material. In this embodiment, the supply port 13 is located at the upper end of the adsorption treatment chamber 10, and the discharge port 14 is located at the lower end of the adsorption treatment chamber 10. The adsorbent material discharged from the adsorption treatment chamber 10 is transferred to the regeneration treatment chamber 20 via a first transfer device 15 and supplied to the regeneration treatment chamber 20. The first transfer device 15 is, for example, a bucket conveyor or an air conveyor.

[0029] Furthermore, the adsorption treatment chambers 10 are arranged in parallel and connected in parallel. Because the adsorption treatment chambers 10 are connected in parallel, the adsorbent material discharged from one adsorption treatment chamber 10 will not directly flow into other adsorption treatment chambers 10. In this embodiment, the separation and recovery device 100 has multiple adsorption treatment chambers 10, so even when using a large amount of adsorbent material to perform adsorption treatment, the adsorbent material is divided into multiple adsorption treatment chambers 10 for adsorption treatment. Therefore, the amount of adsorbent material contained in each adsorption treatment chamber 10 can be suppressed, and adsorption treatment can be performed efficiently.

[0030] <Regeneration Processing Room>

[0031] The regeneration chamber 20 is a chamber in which regeneration processing is performed to remove carbon dioxide from the adsorbent material. The adsorbent material to be regenerated is the adsorbent material used for adsorption processing in the adsorption chamber 10. The regeneration chamber 20 takes the adsorbent material used for adsorption processing in the adsorption chamber 10 into its interior, and brings the taken-in adsorbent material into contact with vapor, thereby performing the regeneration process. Furthermore, the regeneration chamber 20 of this embodiment is a sealable container. In the regeneration process of this embodiment, in order to create a negative pressure inside the regeneration chamber 20, the regeneration chamber 20 is configured to withstand negative pressure.

[0032] The regeneration chamber 20 includes a supply port 21 for taking in adsorbent material and a discharge port 22 for discharging adsorbent material. In this embodiment, the supply port 21 is located at the upper end of the regeneration chamber 20, and the discharge port 22 is located at the lower end of the regeneration chamber 20. The regenerated adsorbent material is discharged from the discharge port 22 of the regeneration chamber 20. The adsorbent material discharged from the regeneration chamber 20 is transferred to the adsorption chamber 10 by a second transfer device 23 and supplied to the adsorption chamber 10. The second transfer device 23 is, for example, a bucket conveyor or an air conveyor.

[0033] In this embodiment, the regeneration chamber 20 is located to the side when viewed from the adsorption chamber 10. Specifically, the supply port 21 of the regeneration chamber 20 is not located below the discharge port 14 of the adsorption chamber 10, and the discharge port 22 of the regeneration chamber 20 is not located above the supply port 13 of the adsorption chamber 10. That is, the adsorption chamber 10 and the regeneration chamber 20 are arranged horizontally, not vertically. Therefore, the height of the separation and recovery device 100 can be suppressed.

[0034] Furthermore, the volume of the regeneration chamber 20 in this embodiment is the same as the volume of each adsorption chamber 10. Therefore, the amount of adsorbent material that can be regenerated in the regeneration chamber 20 at one time is the same as the amount of adsorbent material contained in each adsorption chamber 10. However, the volume of the regeneration chamber 20 may also be larger than the volume of each adsorption chamber 10. In addition, the total volume obtained by summing the volumes of all adsorption chambers 10 is greater than the volume of the regeneration chamber 20.

[0035] <Attraction Device>

[0036] The suction device 30 is a device for drawing in the atmosphere inside the adsorption treatment chamber 10. For example... Figure 2As shown, the suction device 30 is located outside the adsorption treatment chamber 10 and on the outflow surface 12 side. In this embodiment, the suction device 30 is, for example, a fan, but it is not limited to this; for example, it could be a negative pressure tank, a pipe connected to a negative pressure chimney, or the like. Alternatively, the separation and recovery equipment 100 may have an air supply device, such as a fan, that supplies air to the inflow surface 11 of the adsorption treatment chamber 10 instead of the suction device 30.

[0037] The suction device 30 draws in the air inside the adsorption treatment chamber 10 via the outflow surface 12, thereby allowing the air to flow from the outside of the adsorption treatment chamber 10 into the interior of the adsorption treatment chamber 10 via the inflow surface 11. Thus, in this embodiment, instead of using an air supply device that delivers air toward the inflow surface 11 of the adsorption treatment chamber 10, the suction device 30 is used to draw the air into the interior of the adsorption treatment chamber 10.

[0038] Therefore, according to this embodiment, the temperature of the air flowing into the adsorption treatment chamber 10 can be prevented from rising as it passes through the air supply device. The lower the temperature of the adsorbent material, the easier it is to adsorb carbon dioxide. In this embodiment, the cooler air flows into the adsorption treatment chamber 10, thus suppressing the temperature rise of the adsorbent material caused by the atmosphere and enabling efficient adsorption treatment.

[0039] <Operation of the Separation and Recycling Equipment>

[0040] Next, the operation of the separation and recovery device 100 will be explained. For simplicity, the separation and recovery device 100 has two adsorption treatment chambers 10 and one regeneration treatment chamber 20. Furthermore, the adsorption treatment time is 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" refers to the time during which the adsorption material is used for adsorption treatment before it is taken into and discharged from the adsorption treatment chamber 10. Similarly, the "regeneration treatment time" refers to the time during which the adsorption material is regenerated before it is taken into and discharged from the regeneration treatment chamber 20.

[0041] First, the separation and recovery equipment 100 simultaneously performs adsorption and regeneration processes. The adsorption process is carried out separately in two adsorption chambers 10. Specifically, with adsorbent material contained in both adsorption chambers 10, the corresponding suction devices 30 are activated. As a result, atmospheric air flows into the two adsorption chambers 10 and passes through their interiors, where carbon dioxide is adsorbed onto the adsorbent material and recovered.

[0042] On the other hand, in the regeneration process, the regeneration chamber 20 is sealed while the adsorbent material is contained within it. Then, a negative pressure is created inside the regeneration chamber 20, and low-temperature steam is supplied to it. As a result, carbon dioxide is released from the adsorbent material, and the adsorbent material is regenerated. At this time, the regeneration chamber 20 can also be heated or kept at a constant temperature.

[0043] Next, when the regeneration process ends after 1 hour, the suction device 30 corresponding to one of the two adsorption chambers 10 is stopped, and the adsorption process in that adsorption chamber 10 ends. At this time, the adsorption process in the other adsorption chamber 10 continues.

[0044] After the adsorption treatment is completed, the adsorption treatment chamber 10 discharges all the adsorbent material used in the adsorption treatment, and the discharged adsorbent material is supplied to the regeneration treatment chamber 20 through the first transfer device 15. At the same time, the regeneration treatment chamber 20 discharges all the adsorbent material that has undergone regeneration treatment, and the discharged adsorbent material is supplied to the adsorption treatment chamber 10 after the adsorption treatment is completed through the second transfer device 23. That is, the adsorbent material is replaced between the adsorption treatment chamber 10 after the adsorption treatment and the regeneration treatment chamber 20.

[0045] Next, regeneration is initiated again in regeneration chamber 20, and adsorption is also initiated again in adsorption chamber 10 with the adsorbent material replaced. Additionally, regeneration chamber 20 regenerates the adsorbent material discharged from adsorption chamber 10 in a single cycle. Afterwards, when regeneration is completed after one hour, the adsorbent material is replaced between adsorption chamber 10 (the chamber where the adsorbent material was replaced) and regeneration chamber 20. After the adsorbent material replacement is completed, regeneration is initiated again in regeneration chamber 20, and adsorption is again initiated again in adsorption chamber 10 with the adsorbent material replaced.

[0046] In this way, the adsorbent material is discharged from the two adsorption chambers 10 at staggered times, and the adsorbent material is replaced alternately every hour. Thus, the adsorbent material is replaced every hour in the regeneration chamber 20, and every two hours in each adsorption chamber 10. By repeating the above cycle, adsorption and regeneration processes can be performed continuously even when the adsorption treatment time (two hours in the example above) and the regeneration treatment time (one hour in the example above) differ.

[0047] Furthermore, while the adsorption treatment time is twice the regeneration treatment time, it can also be more than twice the regeneration treatment time. In this case, the number of adsorption treatment chambers 10 in the separation and recovery device 100 can be more than twice the number of regeneration treatment chambers 20. The separation and recovery device 100 of this embodiment separates and recovers atmospheric carbon dioxide instead of waste gas, but the amount of carbon dioxide contained in the atmosphere is far less than the amount contained in waste gas. Therefore, the adsorbent material can sufficiently adsorb carbon dioxide even when exposed to the atmosphere for a long time. Therefore, as in this embodiment, by making the number of adsorption treatment chambers 10 greater than the number of regeneration treatment chambers 20, that is, by making the total volume of the adsorption treatment chambers 10 larger than the volume of the regeneration treatment chambers 20, a longer adsorption treatment time can be ensured, the capacity of the adsorbent material can be fully utilized, and thus efficient adsorption treatment can be performed.

[0048] Furthermore, while the supply of adsorbent material to the regeneration chamber 20 and the supply of adsorbent material to the adsorption chamber 10 after the adsorption process are performed simultaneously, if it is difficult to perform these operations simultaneously, the separation and recovery equipment 100 may have, for example, three adsorption chambers 10. That is, the number of adsorption chambers 10 in the separation and recovery equipment 100 may be three times the number of regeneration chambers 20. According to this structure, by emptying the interior and stopping the regeneration process of the three adsorption chambers 10 sequentially, adsorption and regeneration processes can be performed continuously.

[0049] (Second Implementation)

[0050] Next, the separation and recycling device 200 of the second embodiment will be described. Figure 3 This is a schematic diagram of the separation and recycling apparatus 200 according to the second embodiment, viewed from the front side. The separation and recycling apparatus 200 of the second embodiment differs from the separation and recycling apparatus 100 of the first embodiment in that it has a regeneration processing standby chamber 40. Apart from this, the separation and recycling apparatus 200 of the second embodiment has the same structure as the separation and recycling apparatus 100 of the first embodiment.

[0051] The regeneration processing standby chamber 40 is a chamber for taking in and temporarily storing the adsorbent material discharged from each adsorption processing chamber 10. Additionally, when the adsorbent material stored in the regeneration processing standby chamber 40 is discharged, it is transferred to the regeneration processing chamber 20. The regeneration processing standby chamber 40 includes a supply port 41 for taking in adsorbent material and a discharge port 42 for discharging adsorbent material. In this embodiment, the supply port 41 is located at the upper end of the regeneration processing standby chamber 40, and the discharge port 42 is located at the lower end of the regeneration processing standby chamber 40.

[0052] The regeneration processing standby chamber 40 is located downstream of the discharge port 14 of the adsorption processing chamber 10 and upstream of the supply port 21 of the regeneration processing chamber 20 in the flow direction of the adsorbent material. In this embodiment, the regeneration processing standby chamber 40 is located above the regeneration processing chamber 20. However, the location of the regeneration processing standby chamber 40 is not limited, and it may be located, for example, on the first transfer device 15. Furthermore, the volume of the regeneration processing standby chamber 40 in this embodiment is the same as the volume of each adsorption processing chamber 10. However, its volume may be larger than that of each adsorption processing chamber 10.

[0053] In the separation and recovery apparatus 200 of this embodiment, when replacing the adsorbent material, firstly, all the adsorbent material stored in the adsorption treatment chamber 10 where the adsorbent material replacement is performed is discharged, and the regeneration standby chamber 40 temporarily stores the adsorbent material discharged from the adsorption treatment chamber 10. Next, the adsorbent material stored in the regeneration treatment chamber 20 is discharged, and the adsorbent material discharged from the regeneration treatment chamber 20 is taken into the adsorption treatment chamber 10 where the adsorbent material replacement is performed. Thus, the empty adsorption treatment chamber 10 is filled with adsorbent material. Afterward, the temporarily stored adsorbent material is discharged from the regeneration standby chamber 40, and the adsorbent material discharged from the regeneration treatment standby chamber 40 is taken into the regeneration treatment chamber 20. Thus, the empty regeneration treatment chamber 20 is filled with adsorbent material. Thus, the replacement of the adsorbent material is completed.

[0054] Thus, according to this embodiment, a time lag occurs from the end of the discharge of adsorbent material from the adsorption treatment chamber 10 to the end of the intake of adsorbent material into the adsorption treatment chamber 10. Therefore, the supply of adsorbent material to the adsorption treatment chamber 10 and the discharge of adsorbent material from the adsorption treatment chamber 10 are not performed simultaneously, preventing the adsorbent material after regeneration from mixing with the adsorbent material before regeneration. Furthermore, it is not necessary to implement countermeasures such as stopping the operation of a portion of the adsorption treatment chamber 10 during the regeneration process to create the aforementioned time lag. Therefore, according to this embodiment, adsorption treatment can be performed efficiently.

[0055] (Third implementation)

[0056] Next, the separation and recovery device 300 of the third embodiment will be described. Figure 4 This is a schematic diagram of the separation and recovery apparatus 300 according to the third embodiment, viewed from the front side. The separation and recovery apparatus 300 of the third embodiment differs from the separation and recovery apparatus 100 of the first embodiment in that it has an adsorption processing standby chamber 50. Apart from this, the separation and recovery apparatus 300 of the third embodiment has the same structure as the separation and recovery apparatus 100 of the first embodiment.

[0057] The adsorption processing standby chamber 50 is a chamber for taking in and temporarily storing the adsorbent material discharged from the regeneration processing chamber 20. Furthermore, when the adsorbent material stored in the adsorption processing standby chamber 50 is discharged, it is transferred to each adsorption processing chamber 10. The adsorption processing standby chamber 50 includes a supply port 51 for taking in adsorbent material and a discharge port 52 for discharging adsorbent material. In this embodiment, the supply port 51 is located at the upper end of the adsorption processing standby chamber 50, and the discharge port 52 is located at the lower end of the adsorption processing standby chamber 50.

[0058] The adsorption treatment standby chamber 50 is located downstream of the discharge port 22 of the regeneration treatment chamber 20 and upstream of the supply port 13 of the adsorption treatment chamber 10 in the flow direction of the adsorbent material. In this embodiment, the adsorption treatment standby chamber 50 is located below the regeneration treatment chamber 20. However, the location of the adsorption treatment standby chamber 50 is not limited, and it may be located, for example, on the second transfer device 23. Furthermore, the volume of the adsorption treatment standby chamber 50 in this embodiment is the same as the volume of the regeneration treatment chamber 20. However, its volume may be larger than that of the regeneration treatment chamber 20.

[0059] In the separation and recovery apparatus 300 of this embodiment, when replacing the adsorbent material, the regeneration chamber 20 first discharges the adsorbent material, and the adsorption processing standby chamber 50 temporarily stores the adsorbent material discharged from the regeneration chamber 20. Next, all the adsorbent material stored in the adsorption processing chamber 10 where the adsorbent material replacement is performed is discharged, and the regeneration chamber 20 takes in the adsorbent material discharged from the adsorption processing chamber 10. Thus, the empty regeneration chamber 20 is filled with adsorbent material. Afterward, the adsorption processing standby chamber 50 discharges the temporarily stored adsorbent material, and the adsorption processing chamber 10 where the adsorbent material replacement is performed takes in the adsorbent material discharged from the adsorption processing standby chamber 50. Thus, the empty adsorption processing chamber 10 is filled with adsorbent material. Thus, the replacement of the adsorbent material is completed.

[0060] Thus, according to this embodiment, similarly to the second embodiment, a time lag occurs from the end of the discharge of adsorbent material from the adsorption treatment chamber 10 to the beginning of the adsorption treatment chamber 10. Therefore, the supply of adsorbent material to the adsorption treatment chamber 10 and the discharge of adsorbent material from the adsorption treatment chamber 10 are not performed simultaneously, preventing the adsorbent material after regeneration from mixing with the adsorbent material before regeneration. Furthermore, it is not necessary to implement countermeasures such as stopping the operation of a portion of the adsorption treatment chamber 10 during the regeneration process to create the aforementioned time lag. Therefore, according to this embodiment, adsorption treatment can be performed efficiently.

[0061] (Summarize)

[0062] The first item disclosed in this specification is an atmospheric carbon dioxide separation and recovery device, comprising: a plurality of adsorption treatment chambers for adsorbing carbon dioxide contained in the atmosphere onto the adsorption material by contacting the atmosphere with the particulate adsorption material contained therein; and a regeneration treatment chamber for regenerating carbon dioxide from the adsorption material by contacting vapor with the particulate adsorption material contained therein, wherein the plurality of adsorption treatment chambers take in the adsorption material that has been regenerated in the regeneration treatment chamber and use the taken-in adsorption material to perform adsorption treatment, and the regeneration treatment chamber takes in the adsorption material used for adsorption treatment in the plurality of adsorption treatment chambers and regenerates the taken-in adsorption material.

[0063] According to this structure, the atmospheric carbon dioxide separation and recovery equipment has multiple adsorption treatment chambers, thus suppressing the amount of adsorbent material contained in each adsorption treatment chamber, resulting in efficient adsorption treatment.

[0064] The second item disclosed in this specification is a carbon dioxide separation and recovery device in the atmosphere according to the first item, wherein the total volume of the plurality of adsorption treatment chambers is greater than the volume of the regeneration treatment chamber.

[0065] The atmospheric carbon dioxide separation and recovery equipment performs adsorption treatment on the atmosphere rather than waste gas. Based on the above structure, by ensuring a long adsorption treatment time, the capacity of the adsorption material can be fully utilized, enabling efficient adsorption treatment.

[0066] The third item disclosed in this specification is based on the atmospheric carbon dioxide separation and recovery device described in the second item, wherein the plurality of adsorption treatment chambers are connected in parallel, and each adsorption treatment chamber discharges all the adsorbent material stored inside at staggered times after adsorption treatment, and the regeneration treatment chamber performs a one-time regeneration treatment on the same amount of adsorbent material as the adsorbent material discharged from each adsorption treatment chamber at staggered times.

[0067] Based on this structure, adsorption and regeneration processes can be carried out continuously.

[0068] The fourth item disclosed in this specification is an atmospheric carbon dioxide separation and recovery device according to the third item, wherein the regeneration treatment chamber is located to the side when viewed from the plurality of adsorption treatment chambers.

[0069] This structure can suppress the height of the carbon dioxide separation and recovery equipment in the atmosphere.

[0070] The fifth item disclosed in this specification is a carbon dioxide separation and recovery device in the atmosphere according to the third item, wherein the carbon dioxide separation and recovery device in the atmosphere has a regeneration processing standby chamber, the volume of which is the same as or larger than the volume of the regeneration processing chamber, and the regeneration processing standby chamber temporarily holds the adsorbent material discharged from each of the adsorption processing chambers.

[0071] According to this structure, a time delay can be generated from the end of the adsorption treatment chamber when the adsorbent material is discharged to the beginning of the supply of adsorbent material to the adsorption treatment chamber, resulting in efficient adsorption treatment.

[0072] The sixth item disclosed in this specification is a carbon dioxide separation and recovery device in the atmosphere according to the third item, wherein the carbon dioxide separation and recovery device in the atmosphere has an adsorption treatment standby chamber, the volume of which is the same as or larger than the volume of each adsorption treatment chamber, and the adsorption treatment standby chamber temporarily holds the adsorbent material discharged from the regeneration treatment chamber.

[0073] According to this structure, a time delay can be generated from the end of the adsorption treatment chamber when the adsorbent material is discharged to the beginning of the supply of adsorbent material to the adsorption treatment chamber, resulting in efficient adsorption treatment.

[0074] The carbon dioxide separation and recovery apparatus in the atmosphere disclosed in item 7 of this specification according to any one of items 1 to 6, wherein the plurality of adsorption chambers each include: an inflow surface for air to flow from the outside of the adsorption chamber into the interior of the adsorption chamber; and an outflow surface for air to flow from the interior of the adsorption chamber to the outside of the adsorption chamber.

[0075] According to this structure, a large amount of air can be drawn into the adsorption treatment chamber through the inflow surface, thus enabling efficient adsorption treatment.

[0076] The carbon dioxide separation and recovery device in the atmosphere disclosed in item 8 of this specification according to item 7, wherein the carbon dioxide separation and recovery device in the atmosphere has a plurality of suction devices located outside each adsorption treatment chamber, which suction the atmosphere inside the adsorption treatment chamber through the outflow surface, thereby causing the atmosphere to flow from the outside of the adsorption treatment chamber into the interior of the adsorption treatment chamber through the inflow surface.

[0077] According to this structure, the temperature of the atmosphere flowing into the adsorption treatment chamber can be suppressed, thereby suppressing the temperature rise of the adsorption material and enabling efficient adsorption treatment.

[0078] The carbon dioxide separation and recovery device in the atmosphere disclosed in item 9 of this specification according to item 7 or 8, wherein the distance from the inflow surface to the outflow surface is smaller than the longitudinal and width dimensions of the inflow surface and smaller than the longitudinal and width dimensions of the outflow surface.

[0079] According to this structure, the volume of the adsorption treatment chamber can be ensured to be above a certain level, and the pressure loss of the atmosphere can be reduced by shortening the distance the atmosphere moves within the adsorption treatment chamber.

Claims

1. A device for separating and recovering carbon dioxide from the atmosphere, comprising: Multiple adsorption chambers, wherein adsorption treatment is performed by contacting atmospheric air with particulate adsorbent material contained within the chambers, thereby adsorbing carbon dioxide contained in the atmosphere onto the adsorbent material; and The regeneration chamber performs a regeneration process by contacting steam with particulate adsorbent material housed inside, thereby removing carbon dioxide from the adsorbent material. The plurality of adsorption treatment chambers take the adsorbent material that has undergone regeneration treatment in the regeneration treatment chamber into the chamber and use the taken-in adsorbent material to carry out adsorption treatment. The regeneration chamber takes the adsorbent material used for adsorption treatment in the plurality of adsorption chambers and puts it into the chamber to regenerate the adsorbent material.

2. The atmospheric carbon dioxide separation and recovery equipment according to claim 1, wherein, The combined volume of the plurality of adsorption treatment chambers is greater than the volume of the regeneration treatment chamber.

3. The atmospheric carbon dioxide separation and recovery equipment according to claim 2, wherein, The multiple adsorption treatment chambers are connected in parallel. After the adsorption treatment is completed, each adsorption chamber will discharge all the adsorbent material stored inside at staggered times. The regeneration chamber performs a one-time regeneration process on the same amount of adsorbent material as that discharged from the adsorption chambers at staggered times.

4. The atmospheric carbon dioxide separation and recovery equipment according to claim 3, wherein, The regeneration chamber is located to the side when viewed from the plurality of adsorption chambers.

5. The atmospheric carbon dioxide separation and recovery equipment according to claim 3, wherein, The atmospheric carbon dioxide separation and recovery equipment has a regeneration processing standby chamber, the volume of which is the same as or larger than that of the regeneration processing chamber. The regeneration processing standby chamber temporarily stores the adsorbent material discharged from each of the adsorption processing chambers.

6. The atmospheric carbon dioxide separation and recovery equipment according to claim 3, wherein, The atmospheric carbon dioxide separation and recovery equipment has an adsorption treatment standby chamber, the volume of which is the same as or larger than the volume of each adsorption treatment chamber. The adsorption treatment standby chamber temporarily stores the adsorbent material discharged from the regeneration treatment chamber.

7. The atmospheric carbon dioxide separation and recovery equipment according to claim 1, wherein, The plurality of adsorption treatment chambers each contain: An inflow surface, which allows atmospheric air to flow from the outside of the adsorption treatment chamber into its interior; and The outlet surface allows air to flow from the inside of the adsorption treatment chamber to the outside.

8. The atmospheric carbon dioxide separation and recovery equipment according to claim 7, wherein, The atmospheric carbon dioxide separation and recovery equipment has multiple suction devices located outside each adsorption treatment chamber. These suction devices draw in the atmosphere inside the adsorption treatment chamber via the outflow surface, thereby causing the atmosphere to flow from the outside of the adsorption treatment chamber into the interior of the adsorption treatment chamber via the inflow surface.

9. The atmospheric carbon dioxide separation and recovery equipment according to claim 7, wherein, The distance from the inflow surface to the outflow surface is smaller than the longitudinal and width dimensions of the inflow surface and smaller than the longitudinal and width dimensions of the outflow surface.

Images