Carbon dioxide separation, recovery, and supply device

Abstract

To solve a problem in a conventional carbon dioxide separation, recovery, and supply device which is difficult in handling and limited in use field since a target gas such as an exhaust gas contains a carbon dioxide at a relatively high concentration.SOLUTION: A carbon dioxide separation, recovery, and supply device comprises: a carbon dioxide adsorbing / releasing agent that adsorbs carbon dioxide and releases the carbon dioxide at a temperature equal to or higher than a temperature at which the carbon dioxide is adsorbed; and a storage container that has at least one opening and accommodates the carbon dioxide adsorbing / releasing agent. The at least one opening may be provided to open a lower surface of the storage container. A support member may be disposed inside the storage container so as to overlap with the at least one opening, and the carbon dioxide adsorbing / releasing agent may be placed on the support member.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an apparatus for capturing carbon dioxide and supplying the captured carbon dioxide. [Background technology]

[0002] Known methods for recovering carbon dioxide include chemical adsorption and pressure swing adsorption (see, for example, Patent Documents 1 and 2). Chemical adsorption is a technique in which an alkaline aqueous solution of an amine or the like is brought into contact with a gas containing carbon dioxide in an absorption tower to selectively absorb carbon dioxide into the alkaline aqueous solution, and then the alkaline aqueous solution is heated in a regeneration tower to separate and recover carbon dioxide. Pressure swing adsorption is a technique in which carbon dioxide is desorbed onto an adsorbent material using a pressure difference based on the properties of the carbon dioxide-containing gas and its affinity for a predetermined adsorbent material. Examples of the predetermined adsorbent material that is used include zeolite, activated carbon, and molecular sieves. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-292298 [Patent Document 2] Japanese Patent Application Laid-Open No. 2017-189750 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional carbon dioxide separation and capture devices have problems such as requiring large-scale facilities, requiring a large amount of energy to separate carbon dioxide, and high running costs. Furthermore, conventional carbon dioxide separation and capture supply devices are designed for gases containing relatively high concentrations of carbon dioxide, such as exhaust gas, which makes them difficult to handle and limits the fields in which they can be used. [Means for solving the problem]

[0005] A carbon dioxide separation, capture and supply device according to one embodiment of the present invention includes a carbon dioxide adsorption / release agent that adsorbs carbon dioxide and releases the carbon dioxide at a temperature higher than the temperature at which the carbon dioxide was adsorbed, and a storage container having at least one opening for storing the carbon dioxide adsorption / release agent.

[0006] In one embodiment of the present invention, at least one opening may be provided to open the bottom surface of the storage container, and a support member may be arranged in the storage container so as to overlap with the at least one opening, and the carbon dioxide adsorbing and releasing agent may be placed on the support member.

[0007] In one embodiment of the present invention, the carbon dioxide separation capture and supply device may have a blower provided in at least one opening, and the blower may have a first operation of blowing air into the storage container and a second operation of blowing air from the storage container to the outside. Also, the at least one opening may consist of a first opening and a second opening, an openable / closeable lid may be provided in the first opening, and the blower may be provided in the second opening, and the openable / closeable lid may be opened during the first operation and closed during the second operation.

[0008] In one embodiment of the present invention, the first opening provided in the container may be provided on the bottom surface, and the second opening may be provided on the side surface.

[0009] A carbon dioxide separation, capture and supply device according to one embodiment of the present invention includes a carbon dioxide adsorption / release agent that adsorbs carbon dioxide and releases the carbon dioxide at a temperature higher than the temperature at which the carbon dioxide was adsorbed, a storage container for storing the carbon dioxide adsorption / release agent, and a hollow support extending downward from the storage container, wherein the storage container has a first opening and a second opening, the storage container has a first open / close lid that closes the second opening, the support is connected so that its hollow part communicates with the first opening, the support has a third opening in its lower part and a second open / close lid that closes the third opening, and the support is provided with a blower in its hollow part that generates an airflow from the storage container to the second opening.

[0010] In one embodiment of the present invention, the storage container of the carbon dioxide separation capture and supply device may be installed on the ground with a support inserted into the ground, and may be installed at a height where the third opening is exposed above the ground. Also, an on-off valve may be provided instead of the blower.

[0011] In one embodiment of the present invention, the carbon dioxide separation capture and supply device may have a first operating mode in which the first opening / closing lid is open and the blower is stopped, and a second operating mode in which the opening / closing lid is closed and the blower is driven.

[0012] A carbon dioxide separation, capture and supply device according to one embodiment of the present invention includes a carbon dioxide adsorption / release agent that adsorbs carbon dioxide and releases the carbon dioxide at a temperature higher than the temperature at which the carbon dioxide was adsorbed, a storage container having at least one opening for storing the carbon dioxide adsorption / release agent, an open / close lid provided on the storage container, a treatment chamber for storing an object to be adsorbed with carbon dioxide, and a carbon dioxide introduction path connecting the storage container and the treatment chamber.

[0013] In one embodiment of the present invention, a blower that forms an air current flowing from the storage container to the processing chamber may be provided in the carbon dioxide introduction path. Also, an open / close valve may be provided in the carbon dioxide introduction path, and the open / close valve may be disposed between the blower and the processing chamber.

[0014] In one embodiment of the present invention, the carbon dioxide separation capture and supply device may have a first operating mode in which the open / close lid is open, the blower is stopped, and the open / close valve is closed, a second operating mode in which the open / close lid is closed, the blower is operating, and the open / close valve is open, and a third operating mode in which the open / close lid is closed, the blower is stopped, and the open / close valve is closed.

[0015] A carbon dioxide separation, capture and supply device according to one embodiment of the present invention includes a carbon dioxide adsorption / release agent that adsorbs carbon dioxide and releases the carbon dioxide at a temperature higher than the temperature at which the carbon dioxide was adsorbed, a storage container that stores the carbon dioxide adsorption / release agent, and a hollow support extending downward from the storage container, wherein the storage container has a first opening and a second opening, and the storage container has an open / close first opening / closing lid that closes the second opening, the support is connected so that the hollow part communicates with the first opening, the support has a third opening at its lower part and an open / close second opening / closing lid that closes the third opening, and has a ventilation part at its tip, and the support is provided with a blower in its hollow part that generates airflow from the storage container to the ventilation part.

[0016] In one embodiment of the present invention, when installing the carbon dioxide separation capture and supply device, the tips of the support poles may be inserted into the ground, the support poles may be long enough to position the storage container above ground, and the ventilation part may be located underground. Also, an open / close valve may be provided between the blower and the ventilation part.

[0017] In one embodiment of the present invention, the carbon dioxide separation capture and supply device may have a first operating mode in which the first opening / closing lid is open, the blower is stopped, the second opening / closing lid is closed, and the opening / closing valve is closed; a second operating mode in which the first opening / closing lid is closed, the blower is operated, the second opening / closing lid is open, and the opening / closing valve is closed; and a third operating mode in which the first opening / closing lid is closed, the blower is operated, the second opening / closing lid is closed, and the opening / closing valve is open.

[0018] In one embodiment of the present invention, the first operation mode may be performed at night and the second operation mode may be performed during the day. In the second operation mode, the carbon dioxide adsorbing and releasing agent may be configured to be heated by sunlight. In the second operation mode, the storage container may be configured to be heated by sunlight, thereby increasing the temperature of the carbon dioxide adsorbing and releasing agent. [Effects of the Invention]

[0019] According to one embodiment of the present invention, it is possible to provide a carbon dioxide separation, capture, and supply device that does not consume a large amount of energy to separate and capture carbon dioxide and has a simple configuration. It is also possible to provide a carbon dioxide separation, capture, and supply device that is easy to handle and can separate and capture carbon dioxide from the atmosphere. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a diagram showing the configuration of a carbon dioxide separation, capture and supply device according to one embodiment of the present invention. [Figure 2] 1 is a diagram showing the configuration of a carbon dioxide separation, capture and supply device according to one embodiment of the present invention. [Figure 3] 1 is a diagram showing the configuration of a carbon dioxide separation, capture and supply device according to one embodiment of the present invention. [Figure 4] 1 is a diagram showing the configuration of a carbon dioxide separation, capture and supply device according to one embodiment of the present invention. [Figure 5] 1 is a diagram showing the configuration of a carbon dioxide separation, capture and supply device according to one embodiment of the present invention. [Figure 6] 1 is a diagram showing the configuration of a carbon dioxide separation, capture and supply device according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention can be implemented in many different forms, and should not be construed as being limited to the description of the embodiments exemplified below. For clarity of explanation, the drawings may show the width, thickness, shape, etc. of each part schematically compared to the actual form, but these are merely examples and do not limit the interpretation of the present invention. Furthermore, in this specification and each drawing, elements similar to those previously described with reference to the previous drawings are designated by the same reference numerals, and detailed descriptions may be omitted as appropriate. Furthermore, the letters "first" and "second" attached to each element are convenient labels used to distinguish each element and have no further meaning unless otherwise specified.

[0022] [First embodiment] The configuration and operation of a carbon dioxide separation, capture and supply device according to one embodiment of the present invention will be described with reference to the drawings.

[0023] FIG. 1 shows a cross-sectional schematic diagram of a carbon dioxide separation, capture, and supply apparatus 100 according to this embodiment. The carbon dioxide separation, capture, and supply apparatus 100 includes a storage container 102 and a carbon dioxide adsorption / release agent 110. There are no limitations on the shape of the storage container 102, and the external shape can have various shapes such as a cube, a rectangular parallelepiped, a sphere, a cone, or a cylinder. The storage container 102 is a container having a space inside. The storage container 102 has at least one opening. FIG. 1 shows an example in which a first opening 104 is provided in the storage container 102.

[0024] The position of the first opening 104 is arbitrary, but it is preferable that it be provided on the bottom surface of the container so that rainwater, dust, and the like do not directly enter the internal space 1022 when the storage container 102 is installed outdoors. From this perspective, it is preferable that the top and side surfaces of the storage container 102 are surrounded by walls. FIG. 1 illustrates a configuration in which the first opening 104 is provided across the entire bottom surface of the storage container 102, but the size of the first opening 104 is not limited to that shown in the figure, and the first opening 104 may be provided so as to open a portion of the bottom surface of the container. Furthermore, the first opening 104 may be divided into multiple openings.

[0025] A support member 112 for placing the carbon dioxide adsorption / release agent 110 is provided inside the storage container 102. The structure of the support member 112 is not limited, and may be, for example, a member with a plurality of through holes such as a mesh plate or a punched plate (or punched metal), or a deep or shallow tray. FIG. 1 shows an example in which the support member 112 is formed of a mesh plate. By using a mesh plate or a punched plate (or punched metal) as the support member 112, the area in which the carbon dioxide adsorption / release agent 110 comes into contact with the air can be increased, allowing for smooth adsorption and release of carbon dioxide. A deep or shallow tray can be installed as the support member 112 to prevent the carbon dioxide adsorption / release agent 110 from flowing out if the carbon dioxide adsorption / release agent 110 has fluidity.

[0026] There is no limitation on the position where the support member 112 is installed inside the storage container 102. The support member 112 is installed at a position where the carbon dioxide adsorption and release agent 110 is placed in the internal space 1022 and the area of ​​contact with the air is large. In other words, the support member 112 is installed at a position where the carbon dioxide adsorption and release agent 110 does not come into close contact with the inner wall surface when the carbon dioxide adsorption and release agent 110 is placed in the internal space 1022 of the storage container 102.

[0027] The first opening 104 provided in the storage container 102 functions as a vent for introducing outside air (such as air) into the internal space 1022 and for discharging gas in the internal space 1022 (gas released from the carbon dioxide adsorption and release agent 110) to the outside. By providing the first opening 104 in the storage container 102, it is possible to introduce outside air into the internal space 1022 and cause the carbon dioxide to be adsorbed by the carbon dioxide adsorption and release agent 110. In addition, the first opening 104 allows the carbon dioxide released from the carbon dioxide adsorption and release agent 110 to be released to the outside.

[0028] In this way, by disposing the carbon dioxide adsorbing and releasing agent 110 inside the storage container 102, it is possible to prevent the carbon dioxide released from the carbon dioxide adsorbing and releasing agent 110 from diffusing in an unintended direction other than the direction in which the first opening 104 is provided. Furthermore, the first opening 104 provided in the storage container 102 allows the carbon dioxide to be released in the direction in which it is open.

[0029] The introduction of outside air (such as air) into the internal space 1022 of the storage container 102 and the discharge of gas in the internal space 1022 to the outside can be achieved by natural convection. Such gas flow may also be controlled by a blower. As shown in FIG. 1, the blower 114 is installed so as to overlap the first opening 104. The blower 114 has a function of forming an airflow that causes gas in the internal space 1022 to flow out. The blower 114 may also have a function of forming a bidirectional airflow, capable of performing two operations: a first operation of forming an airflow that introduces outside air (such as air) into the internal space 1022, and a second operation of forming an airflow that discharges gas (carbon dioxide) in the internal space 1022 to the outside.

[0030] 1 shows an example in which one fan 114 is installed in the first opening 104, but multiple fans 114 may be installed in the first opening 104. Also, two types of fans, one for intake and one for exhaust, may be installed to generate airflow in both directions.

[0031] The carbon dioxide adsorption / release agent 110 is configured to include a material capable of adsorbing and releasing carbon dioxide. For example, an amine compound can be used as a material capable of adsorbing and releasing carbon dioxide. Note that a carbon dioxide adsorption / release agent formed from such a material may be evaluated as absorbing carbon dioxide (it may absorb carbon dioxide rather than adsorb it), and the carbon dioxide adsorption / release agent 110 may also be referred to as a carbon dioxide absorption / release agent 110. The carbon dioxide adsorption / release agent 110 may have such an amine compound dispersed in a substrate (matrix). The substrate (matrix) may be a resin material or an inorganic porous material capable of dispersing and retaining an amine compound. For example, polyolefin or the like can be used as the resin material. For example, zeolite, carbide, or the like can be used as the inorganic porous material.

[0032] Examples of amine compounds that can adsorb and release carbon dioxide include the compounds described in the specification of WO 2022 / 085789 and the porous metal-organic framework described in JP 2023-158570 A. Such amine compounds can adsorb carbon dioxide at temperatures below 40°C and release carbon dioxide at a temperature higher than the temperature at which the carbon dioxide was adsorbed, for example, at a temperature of 40°C or higher but less than 100°C (a temperature in the low to medium temperature range). When such amine compounds are used, carbon dioxide can be adsorbed at a temperature of about room temperature (e.g., 25°C), in other words, at a temperature that is not intentionally heated, and the carbon dioxide can be released by heating with natural energy such as sunlight.

[0033] From this perspective, the carbon dioxide adsorption / release agent 110 may contain a light absorbing agent in the base material (matrix). A dye or pigment that absorbs visible light or infrared light may be used as the light absorbing agent; for example, carbon black may be used as the light absorbing agent. By containing a light absorbing agent in the base material (matrix), the temperature of the carbon dioxide adsorption / release agent 110 can be increased by irradiation with external light (such as sunlight).

[0034] In another embodiment of the support member 112, a heat generating plate made of a metal plate or the like may be installed in the portion where the carbon dioxide adsorbing and releasing agent 110 is placed, and the temperature of the metal plate may rise due to irradiation with external light (sunlight, etc.), thereby secondarily increasing the temperature of the carbon dioxide adsorbing and releasing agent 110. In yet another embodiment, the storage container 102 may function as a heat generating plate that absorbs external light (sunlight, etc.) and increases in temperature. Alternatively, the carbon dioxide adsorbing and releasing agent 110 may contain a light absorbing agent and be placed on the heat generating plate. With this configuration, it is possible to promote the release of carbon dioxide by utilizing natural energy (sunlight, etc.) from the carbon dioxide adsorbing and releasing agent 110 after it has adsorbed carbon dioxide.

[0035] It is preferable that a part or the whole of the storage container 102 is translucent or transparent so that external light (such as sunlight) can be irradiated onto the carbon dioxide adsorbing and releasing agent 110. For example, it is preferable that the storage container 102 is made of a transparent resin material such as acrylic, or a transparent glass material. The storage container 102 may be made entirely of a transparent resin material or glass material, or may be provided with a window for light incidence, and the window may be made of a transparent resin material or glass material.

[0036] The storage container 102 may also be made of a metal material such as iron, aluminum, or copper, or an alloy containing these metal materials as a main component. For example, the storage container 102 may be made of stainless steel, brass, or the like. Furthermore, the storage container 102 may be made of a synthetic resin colored with a coloring material. Although the storage container 102 made of these materials is opaque, its temperature rises when exposed to external light (such as sunlight), and therefore it can also function as a heating plate as described above.

[0037] The carbon dioxide separation capture supply device 100 can be installed and operated outdoors, for example. In a configuration in which the blower 114 is not provided, the carbon dioxide separation capture supply device 100 adsorbs and releases carbon dioxide by natural convection through the first opening 104. Specifically, at night (roughly the time period from sunset to sunrise), outside air (such as air) flows into the internal space 1022 of the storage container 102 from the first opening 104 by natural convection. The carbon dioxide adsorption / release agent 110 adsorbs carbon dioxide contained in the air filling the internal space 1022. During the day (roughly the time period from sunrise to sunset when sunlight is irradiated), the carbon dioxide adsorption / release agent 110 is heated by external light (such as sunlight) to a temperature higher than the temperature at which it adsorbed carbon dioxide. Then, when the carbon dioxide adsorption / release agent 110 reaches a temperature at which it can release carbon dioxide, the carbon dioxide is released into the internal space 1022 and is then released to the outside through the first opening 104 due to natural convection and a temperature gradient (a temperature gradient caused by the temperature of the carbon dioxide adsorption / release agent 110 being higher than the outside air temperature).

[0038] When the carbon dioxide separation capture supply device 100 is equipped with a blower 114, the operation of the blower 114 may be stopped at night and driven during the day to release the gas (carbon dioxide) in the internal space 1022 to the outside through the first opening 104. A battery may be used as a power source for driving the blower 114. Also, a small-scale solar power generation system (a battery charging system using solar cells) may be used. The blowing air by the blower 114 does not require a large volume of air, and only a small volume of air is sufficient, so power consumption is small. For this reason, a blower 114 capable of blowing air in both directions may be used, and the blower 114 may be driven even at night.

[0039] The carbon dioxide separation, capture, and supply device 100 that operates in this way can be installed in agricultural land such as farmland and rice paddies, and other green spaces. The carbon dioxide separation, capture, and supply device 100 installed in agricultural land or green spaces can adsorb carbon dioxide from the atmosphere at night and supply the adsorbed carbon dioxide to plants during the day, promoting their growth.

[0040] The carbon dioxide separation, capture, and supply device 100 can be installed at or near the exhaust port of an internal combustion engine or a combustion furnace (the area where the exhaust gas flows out), or in a container into which the exhaust gas emitted from the exhaust port is introduced. The carbon dioxide separation, capture, and supply device 100 installed in such a location can adsorb the carbon dioxide contained in the exhaust gas and reduce the carbon dioxide released into the atmosphere. The carbon dioxide released from the carbon dioxide separation, capture, and supply device 100 can be stored in a specified container and supplied to plants in agricultural land such as farmland and rice paddies, other green spaces, or plants cultivated in plant plants, as described above.

[0041] The carbon dioxide separation, capture, and supply system 100 according to this embodiment can selectively adsorb and release carbon dioxide contained in the atmosphere or in a specific atmosphere with a high concentration of exhaust gas. The carbon dioxide separation, capture, and supply system 100 can adsorb carbon dioxide at low temperatures below 40°C and release carbon dioxide at low to medium temperatures below 100°C, and can release carbon dioxide using natural energy, thereby enabling effective use of carbon dioxide without placing a burden on the global environment.

[0042] [Second embodiment] This embodiment shows an aspect in which the configuration of the opening provided in the storage container is different from that of the carbon dioxide separation capture and supply device shown in the first embodiment. In the following explanation, the differences from the first embodiment will be mainly explained, and explanations of the common parts will be omitted as appropriate.

[0043] 2(A) and (B) show cross-sectional schematic diagrams of a carbon dioxide separation capture and supply apparatus 100 according to this embodiment. The carbon dioxide separation capture and supply apparatus 100 according to this embodiment has a structure in which a first opening 104 and a second opening 106 are provided in a storage container 102. The first opening 104 is an opening that opens a partial area of ​​the storage container 102 (for example, the underside of the storage container 102), as in the first embodiment. In contrast, the second opening 106 is openable and closable, and a first opening / closing lid 108 is provided to close the open area. The second opening 106 can be placed in two states: an open state ( FIG. 2(A) ) and a closed state ( FIG. 2(B) ), depending on the first opening / closing lid 108.

[0044] There is no limitation on the position of the second opening 106, but it is preferable that it be provided on the side of the storage container 102 so that the carbon dioxide adsorption / release agent 110 is not exposed to wind and rain when the carbon dioxide separation capture supply device 100 is installed outdoors. Furthermore, the second opening 106 may be provided in one location within the storage container 102, or in multiple locations.

[0045] The open and closed states of first opening / closing cover 108 are controlled by drive mechanism 109. Drive mechanism 109 is, for example, electrically driven and is composed of mechanical elements such as a motor, gears, and a rotating shaft. The opening and closing of first opening / closing cover 108 may be automatically controlled by drive mechanism 109. For example, a light sensor (not shown) may control it to the open state when it is dark (nighttime) and to the closed state when there is a predetermined amount of brightness (daytime). Alternatively, a timer may control it to the open state at night (roughly the time period from sunset to sunrise) and to the closed state during the daytime (roughly the time period from sunrise to sunset when sunlight is irradiated).

[0046] The carbon dioxide separation capture and supply device 100 according to this embodiment captures and supplies carbon dioxide with the operation of the first opening / closing lid 108. Specifically, at night (roughly the time period from sunset to sunrise), the first opening / closing lid 108 is controlled to be in an open state, as shown in FIG. 2(A). When the first opening / closing lid 108 is in an open state, outside air (such as air) flows into the internal space 1022 of the storage container 102 through the second opening 106. The carbon dioxide adsorption / release agent 110 adsorbs carbon dioxide contained in the air filling the internal space 1022. At this time, the blower 114 is in a stopped state.

[0047] The second opening 106 directly connects the internal space 1022 in which the carbon dioxide adsorbing and releasing agent 110 is placed with the outside, so that the carbon dioxide adsorbing and releasing agent 110 can be directly exposed to outside air (air, etc.). Furthermore, by providing the second openings 106 at multiple locations in the storage container 102 (for example, by providing the second openings 106 on one side and the other side of the storage container 102 as shown in FIG. 2(A)), a flow of outside air (air, etc.) can be formed in the internal space 1022, and the carbon dioxide adsorbing and releasing agent 110 can be constantly exposed to fresh outside air (air, etc.). This increases the amount of carbon dioxide adsorbed by the carbon dioxide adsorbing and releasing agent 110.

[0048] 2(A), the blower 114 may be operated to actively take in outside air (air, etc.). That is, by operating the blower 114 with the first opening / closing lid 108 open, it is possible to form an airflow in which outside air (air, etc.) is sucked in through the second opening 106 and released through the first opening 104. This operation also allows the carbon dioxide adsorption / release agent 110 to be constantly exposed to fresh outside air (air, etc.), thereby increasing the amount of carbon dioxide that is adsorbed.

[0049] During the daytime (roughly the period from sunrise to sunset when sunlight is irradiated), as shown in FIG. 2(B), the first opening / closing lid 108 is controlled to a closed state. The carbon dioxide adsorption / release agent 110 is heated by external light (such as sunlight) to a temperature higher than the temperature at which it adsorbed carbon dioxide. When the carbon dioxide adsorption / release agent 110 reaches a temperature at which it can release carbon dioxide, the carbon dioxide is released into the internal space 1022 and is released to the outside through the first opening 104 by natural convection. At this time, the second opening 106 is closed, so that the carbon dioxide released from the carbon dioxide adsorption / release agent 110 does not diffuse laterally, and most of the released carbon dioxide can be released to the outside through the first opening 104. At this time, the blower 114 may be operated so that the carbon dioxide released into the internal space 1022 is released to the outside through the first opening 104.

[0050] In the carbon dioxide separation capture supply device 100 of this embodiment, a second opening 106 is provided in the storage container 102, so that outside air (such as air) can be more actively introduced into the internal space 1022, allowing carbon dioxide to be adsorbed by the carbon dioxide adsorption / release agent 110.

[0051] The carbon dioxide separation capture and supply device 100 of this embodiment, like the first embodiment, can be installed in agricultural land such as farmland or rice paddies, or other green spaces, and can also be installed near the exhaust outlet of an internal combustion engine or combustion furnace or in its vicinity (the area where the exhaust gas flows out), or in a container into which the exhaust gas emitted from the exhaust outlet is introduced, and can be made to achieve the same effects.

[0052] [Third embodiment] This embodiment shows an example of a carbon dioxide separation capture and supply device in which the storage container is cylindrical. In the following explanation, differences from the first and second embodiments will be mainly described, and explanations of common parts will be omitted as appropriate.

[0053] Figures 3(A) and (B) show the carbon dioxide separation capture and supply apparatus 100 according to this embodiment. Figure 3(A) shows a schematic diagram of the carbon dioxide separation capture and supply apparatus 100 as seen from above, and Figure 3(B) shows a schematic cross-sectional diagram of the carbon dioxide separation capture and supply apparatus 100. The storage container 102 has a cylindrical appearance, with the top surface closed by a lid (or wall) and the bottom surface open to form a first opening 104.

[0054] The storage container 102 has an internal space 1022, and a support member 112 and a carbon dioxide adsorbing and releasing agent 110 are provided in the internal space 1022. The support member 112 is provided along the inner wall of the storage container 102, and the carbon dioxide adsorbing and releasing agent 110 is disposed on top of the support member 112. Note that, although Fig. 3(A) shows an example in which the support member 112 and the carbon dioxide adsorbing and releasing agent 110 are continuous along the inner wall of the storage container 102, the present invention is not limited to this example, and the support member 112 and the carbon dioxide adsorbing and releasing agent 110, or the carbon dioxide adsorbing and releasing agent 110, may be provided discontinuously.

[0055] The storage container 102 is provided with a second opening 106 and a first opening / closing lid 108 that is positioned at the second opening 106. The second opening 106 is provided on the side of the storage container 102 at a position slightly higher than the position where the carbon dioxide adsorption / release agent 110 is disposed. FIG. 3(A) shows an example in which the first opening / closing lids 108 are provided in two locations, but more first opening / closing lids 108 may be provided. A blower 114 may be provided inside the storage container 102. The blower 114 is installed at a position lower than the position where the carbon dioxide adsorption / release agent 110 is disposed.

[0056] According to the carbon dioxide separation capture supply device 100 of this embodiment, the carbon dioxide adsorption / release agent 110 is arranged along the inner wall surface of the storage container 102, so that the central part of the internal space can be used as a gas (air) flow path, and a smooth airflow can be formed. Furthermore, since the length (height) of the cylindrical storage container 102 can be freely adjusted, the storage container 102 itself can be used as a support for the main body when the carbon dioxide separation capture supply device 100 is installed outdoors.

[0057] The carbon dioxide separation capture supply device 100 of this embodiment is similar to the first and second embodiments except for the configurations of the storage container 102, support member 112, and carbon dioxide adsorption / release agent 110, and can achieve the same effects.

[0058] [Fourth embodiment] This embodiment shows an example of supplying carbon dioxide to plants using a carbon dioxide separation, capture and supply device.

[0059] FIG. 4 shows an aspect in which the carbon dioxide separation capture and supply apparatus 100 according to this embodiment is installed on the ground 200. In the carbon dioxide separation capture and supply apparatus 100 shown in FIG. 4, the storage container 102 has a cylindrical appearance, but the configuration is the same as that in the second embodiment. The second opening 106, first opening / closing lid 108, and drive mechanism 109 provided in the storage container 102 are also configured in the same manner. Furthermore, in FIG. 4, the carbon dioxide adsorption / release agent 110 is shown in the form of a pellet, but the material forming the pellet and its carbon dioxide adsorption / release function are the same as those shown in the first embodiment. Note that FIG. 4 omits the support member 112 that supports the carbon dioxide adsorption / release agent 110, but as long as the storage container 102 has a structure that can stably hold the carbon dioxide adsorption / release agent 110, the support member 112 need not be used, or may be additionally disposed in the internal space 1022.

[0060] The storage container 102 is supported by a support 116 and is placed at a high position above the ground 200. There is no limitation on the height at which the storage container 102 may be installed, but it is preferable that the height be such that the storage container 102 will not be buried by the leaves of the plants 202 to be cultivated as they grow. The support 116 is a hollow tube, and preferably has sufficient strength (thickness and hardness) to support the storage container 102 and stand upright by inserting its tip into the ground 200. The support 116 is attached to support the storage container 102. The support 116 does not need to be translucent or generate heat by absorbing light, and therefore may be made of a material different from that of the storage container 102. For example, the support 116 may be made of an aluminum alloy, stainless steel, or other metal material, or may be made of a hard resin material. There is no limitation on the connection structure between the support 116 and the storage container 102; for example, they may be joined with an adhesive or fitted with screws.

[0061] The support 116 is connected so that the hollow portion 1162 communicates with the first opening 104. The hollow portion of the support 116 forms a flow path for carbon dioxide released from the carbon dioxide adsorption / release agent 110. A third opening 118 communicating with the hollow portion 1162 is provided in the support 116. The third opening 118 is provided at a height that is exposed above the ground 200, even when the support 116 is inserted into the ground 200 to support the storage container 102. In other words, the height of the third opening 118 from the ground 200 can be adjusted by changing the depth to which the support 116 is inserted into the ground 200.

[0062] A second opening / closing lid 120 is provided at the third opening 118. The second opening / closing lid 120 is driven by a drive mechanism 119. The second opening / closing lid 120 is controlled by the drive mechanism 119 to be in an open state when carbon dioxide is supplied to the plant 202, and is controlled to be in a closed state at other times.

[0063] A blower 114 may be provided in the hollow portion 1162 of the support 116 to form an airflow from the first opening 104 toward the third opening 118. The configuration and function of the blower 114 are similar to those shown in the first embodiment.

[0064] Moreover, an on-off valve 115 may be provided instead of the blower 114. Carbon dioxide has a higher specific gravity than air (is heavier than air), so by periodically opening and closing the on-off valve 115, gas (air) containing a high concentration of carbon dioxide can be caused to flow into the third opening 118.

[0065] The carbon dioxide separation capture supply device 100 according to this embodiment can separate and capture carbon dioxide from the atmosphere and supply the captured carbon dioxide to plants. The operation of the carbon dioxide separation capture supply device 100 shown in FIG. 4 is the same as that shown in the second embodiment. That is, when capturing carbon dioxide at night, there is a first operation mode in which the first opening / closing lid 108 is open, the second opening / closing lid 120 is closed, and the blower 114 is stopped. In the first operation mode, outside air flows into the storage container 102, and the carbon dioxide adsorption / release agent 110 adsorbs carbon dioxide. In the daytime, there is a second operation mode in which the first opening / closing lid 108 is closed, the second opening / closing lid 120 is open, and the blower 114 is driven. In the second operation mode, carbon dioxide released from the carbon dioxide adsorption / release agent 110 heated by outside light (sunlight) passes through the hollow portion 1162 of the support 116 and is released from the third opening 118.

[0066] The first operation mode and the second operation mode can be repeated over the period of cultivating the plant 202. In this case, only a small amount of power is required to operate the first opening / closing lid 108, the second opening / closing lid 120, and the blower 114, so the carbon dioxide separation capture and supply device 100 does not need to be connected to a commercial power source and can be driven by an isolated power source (such as a storage battery or an isolated power supply system using solar power generation).

[0067] This series of operations by the carbon dioxide separation, capture and supply device 100 can provide an environment with a high concentration of carbon dioxide in the space where the plants 202 are grown. As a result, the plants 202 can be made to actively carry out photosynthesis, which promotes growth and increases the yield during the harvest season.

[0068] [Fifth embodiment] This embodiment shows an aspect in which a configuration for supplying carbon dioxide underground is added to the carbon dioxide separation capture and supply apparatus shown in the fourth embodiment. In the following explanation, the differences from the fourth embodiment will be mainly described.

[0069] FIG. 5 shows the configuration of the carbon dioxide separation capture and supply apparatus 100 according to this embodiment. In the carbon dioxide separation capture and supply apparatus 100 according to this embodiment, a vent 1164 made of a gas-permeable material is provided in the portion of the support 116 that is embedded in the ground. The vent 1164 is provided so as to be connected to the hollow portion 1162. The vent 1164 is preferably formed of a porous material, such as an unglazed material made by firing clay at a low temperature, pumice, or porous ceramic. The vent 1164 may also be provided by forming small holes (micropores) in the support 116. By providing the vent 1164, carbon dioxide supplied from the storage container 102 can be supplied into the ground.

[0070] The carbon dioxide separation capture supply apparatus 100 according to this embodiment has different operation modes for night and day, similar to the fourth embodiment. Specifically, it has a first operation mode in which, at night, when capturing carbon dioxide, the first open-close lid 108 is opened, the blower 114 is stopped, and the open-close valve 117 is closed. During the day, it has a second operation mode in which the first open-close lid 108 is controlled to be closed, the blower 114 is driven, and the open-close valve 117 is controlled to be open. The first operation mode is an operation in which carbon dioxide contained in outside air (such as air) is adsorbed by the carbon dioxide adsorption / release agent 110. The second operation mode is an operation in which carbon dioxide released from the carbon dioxide adsorption / release agent 110 is released through the ventilation section 1164 to supply carbon dioxide to the soil. Thus, by providing the open-close valve 117, the carbon dioxide separation capture supply apparatus 100 can supply gas (air) containing a high concentration of carbon dioxide to the soil. The open-close valve 117 may not be provided.

[0071] According to the carbon dioxide separation, capture and supply apparatus 100 of this embodiment, by providing a ventilation section 1164 at the tip of the support 116, carbon dioxide can be supplied into the ground. With this configuration, it is possible to improve the soil quality of alkaline soil, for example. The carbon dioxide separation, capture and supply apparatus 100 of this embodiment has the same configuration as the fourth embodiment except for the provision of the ventilation section 1164, and can achieve the same effects.

[0072] [Sixth embodiment] This embodiment shows an example of a carbon dioxide separation, capture and supply apparatus provided with a treatment chamber 126 to which carbon dioxide is supplied.

[0073] 6 shows the configuration of a carbon dioxide separation capture supply apparatus 100 according to this embodiment. The carbon dioxide separation capture supply apparatus 100 according to this embodiment has a configuration in which a treatment chamber 126 is connected to a storage container 102. The configuration of the storage container 102 is the same as that in the second embodiment, and detailed description thereof will be omitted. The treatment chamber 126 is a closed container or room for forming an atmosphere with a high concentration of carbon dioxide inside.

[0074] The storage container 102 and the processing chamber 126 may be connected by a carbon dioxide introduction path 122. The carbon dioxide introduction path 122 may be provided with a blower 114 and an on-off valve 124. The blower 114 is provided to form an air current so that the carbon dioxide released from the storage container 102 flows into the processing chamber 126. The on-off valve 124 is provided to open when carbon dioxide is supplied and to make the processing chamber 126 a sealed space by closing it.

[0075] The carbon dioxide separation capture and supply device 100 according to this embodiment has at least three operation modes. The first operation mode is an operation mode for capturing carbon dioxide, in which the first opening / closing lid 108 is open, the blower 114 is stopped, and the opening / closing valve 124 is closed. Details of the operation at this time are the same as those described in the second embodiment.

[0076] The second operation mode is an operation mode in which carbon dioxide is supplied from the storage container 102 to the processing chamber 126, in which the first open / close lid 108 is closed, the blower 114 is operating, and the open / close valve 124 is open. The operation when carbon dioxide is supplied from the storage container 102, i.e., the mechanism by which carbon dioxide is released from the carbon dioxide adsorption and release agent 110, is the same as in the second embodiment. The carbon dioxide released from the storage container 102 is blown into the processing chamber 126 by the blower 114, and an atmosphere in the processing chamber 126 with a higher carbon dioxide concentration than that in the atmosphere is formed.

[0077] The third operation mode is an operation mode in which the object 204 is exposed to a high carbon dioxide atmosphere in the processing chamber 126, and the blower 114 is stopped and the on-off valve 124 is closed. At this time, the first on-off lid 108 on the storage container 102 side may be open (i.e., the object may be operating in the first operation mode) or may be closed. By being exposed to an atmosphere with a high carbon dioxide concentration, the object 204 placed in the processing chamber 126 can adsorb carbon dioxide at a higher concentration than when exposed to the air.

[0078] Various objects 204 can be selected for the purpose of absorbing or exposing the object to carbon dioxide. For example, a concrete structure into which fresh concrete has been poured and is being cured can be selected as the object 204. By placing the concrete structure to be cured in the treatment chamber 126, carbon dioxide can be fixed in the concrete structure. In this case, the carbon dioxide separation, capture, and supply device 100 can simultaneously execute the first operation mode and the third operation mode, so that carbon dioxide can be captured and the concrete structure can be cured at night, and during the day, carbon dioxide can be supplied while the concrete structure is being cured in the second operation mode, and then the device can continue to switch to the third operation mode.

[0079] The target object 204 may be fresh concrete, cement milk, mortar, or the like before being poured. By exposing such target object 204 to carbon dioxide in the treatment chamber 126, the carbon dioxide can be fixed. The target object 204 may also be stored materials (cement, fly ash, slag, ash, aggregate) used in concrete. By placing such stored materials in the treatment chamber 126, the carbon dioxide can be absorbed and dissolved into the fresh concrete.

[0080] The target object 204 may also be incineration ash, alkaline solution, alkaline soil, or charcoal. Such target object 204 can be placed in the treatment chamber 126 and exposed to carbon dioxide to be neutralized.

[0081] The treatment chamber 126 may be replaced with a cultivation chamber of a plant factory. With such a configuration, carbon dioxide can be supplied to the plants being cultivated, thereby promoting their growth.

[0082] According to the carbon dioxide separation capture and supply device 100 of this embodiment, by providing a processing chamber 126, it is possible to supply carbon dioxide to a specific target 204. The gas supplied to the storage container 102 may be the atmosphere (air) or exhaust gas discharged from an exhaust port. In either case, carbon dioxide is selectively captured by the carbon dioxide adsorption and release agent 110, and the captured carbon dioxide is supplied to the processing chamber 126 and fixed to the target 204, thereby reducing the carbon dioxide concentration in the atmosphere. [Explanation of symbols]

[0083] 100: carbon dioxide separation, recovery and supply device, 102: storage container, 1022: internal space, 104: first opening, 106: second opening, 108: first opening / closing lid, 109: driving mechanism, 110: carbon dioxide adsorption / release agent, 112: support member, 114: blower 114, 115: opening / closing valve, 116: support, 1162: hollow portion, 1164: ventilation section, 117: opening / closing valve, 118: third opening, 119: driving mechanism, 120: second opening / closing lid, 122: carbon dioxide introduction path, 124: opening / closing valve, 126: treatment chamber, 200: ground, 202: plant, 204: target object

Claims

1. a carbon dioxide adsorption / release agent that adsorbs carbon dioxide and releases carbon dioxide at a temperature equal to or higher than the temperature at which the carbon dioxide was adsorbed; a storage container having at least one opening and storing the carbon dioxide adsorbing and releasing agent; A carbon dioxide separation, capture and supply device characterized by the above.

2. The carbon dioxide separation capture and supply device according to claim 1 , wherein the at least one opening opens to a lower surface of the storage container.

3. a support member is disposed in the storage container so as to overlap the at least one opening, and the carbon dioxide adsorbing and releasing agent is placed on the support member; The carbon dioxide separation, capture and supply system according to claim 2.

4. a blower provided in the at least one opening, The blower performs a first operation of blowing air into the storage container and a second operation of blowing the air inside the storage container to the outside. The carbon dioxide separation, capture and supply system according to claim 1.

5. the at least one opening comprises a first opening and a second opening; an openable / closable lid is provided on the first opening, The blower is provided at the second opening, The retractable lid opens during the first operation and closes during the second operation. The carbon dioxide separation, capture and supply system according to claim 4.

6. the first opening is provided on the bottom surface of the container; The second opening is provided on a side surface of the storage container. The carbon dioxide separation, capture and supply system according to claim 5.

7. a carbon dioxide adsorption / release agent that adsorbs carbon dioxide and releases carbon dioxide at a temperature equal to or higher than the temperature at which the carbon dioxide was adsorbed; a storage container for storing the carbon dioxide adsorption and release agent; a hollow support extending downward from the container; The container has a first opening and a second opening, the storage container has a first opening / closing lid that closes the second opening, the support pillar is connected such that the hollow portion communicates with the first opening; the support pillar has a third opening at a lower portion thereof and a second opening / closing cover that closes the third opening; The support pillar is provided with a blower in the hollow portion thereof for generating an airflow from the storage container to the second opening. A carbon dioxide separation, capture and supply device characterized by the above.

8. The support pole is inserted into the ground to erect the storage container on the ground, The third opening is provided at a height exposed above the ground. The carbon dioxide separation, capture and supply system according to claim 7.

9. An open / close valve is provided instead of the blower. The carbon dioxide separation, capture and supply system according to claim 7.

10. a first operation mode in which the first opening / closing cover is opened and the blower is stopped; a second operating mode in which the retractable lid is closed and the blower is driven; The carbon dioxide separation, capture and supply system according to claim 9.

11. a carbon dioxide adsorption / release agent that adsorbs carbon dioxide and releases carbon dioxide at a temperature equal to or higher than the temperature at which the carbon dioxide was adsorbed; a storage container having at least one opening and storing the carbon dioxide adsorption / release agent; an openable / closable lid provided on the storage container; a treatment chamber that accommodates an object to be adsorbed with carbon dioxide; a carbon dioxide introduction path connecting the storage container and the processing chamber; A carbon dioxide separation, capture and supply device characterized by the above.

12. a blower that forms an air current flowing from the storage container to the processing chamber is provided in the carbon dioxide introduction path; The carbon dioxide separation and capture supply system according to claim 11.

13. an open / close valve is provided in the carbon dioxide introduction path, The open / close valve is disposed between the blower and the processing chamber. The carbon dioxide separation, capture and supply system according to claim 12.

14. a first operating mode in which the openable cover is open, the blower is stopped, and the openable valve is closed; a second operating mode in which the openable cover is closed, the blower is operating, and the openable valve is open; a third operating mode in which the openable lid is closed, the blower is stopped, and the openable valve is closed; The carbon dioxide separation, capture and supply system according to claim 13.

15. a carbon dioxide adsorption / release agent that adsorbs carbon dioxide and releases carbon dioxide at a temperature equal to or higher than the temperature at which the carbon dioxide was adsorbed; a storage container for storing the carbon dioxide adsorption and release agent; a hollow support extending downward from the container; The container has a first opening and a second opening, the storage container has a first opening / closing lid that closes the second opening, the support pillar is connected such that the hollow portion communicates with the first opening; the support pillar has a third opening at a lower portion thereof and an openable second opening / closing cover that closes the third opening, and has a ventilation portion at a tip portion thereof; The support pillar is provided with a blower in the hollow portion thereof for generating an air flow from the storage container to the ventilation portion. A carbon dioxide separation, capture and supply device characterized by the above.

16. When installing the carbon dioxide separation and capture supply device, The tip of the support pole is inserted into the ground, the support pole has a length that allows the storage container to be located above ground, and the ventilation part is located underground. The carbon dioxide separation and capture supply system according to claim 15.

17. An open / close valve is provided between the blower and the ventilation section. The carbon dioxide separation and capture supply system according to claim 16.

18. a first operating mode in which the first opening / closing cover is open, the blower is stopped, the second opening / closing cover is closed, and the opening / closing valve is closed; a second operating mode in which the first opening / closing cover is closed, the blower is operated, the second opening / closing cover is open, and the opening / closing valve is closed; a third operating mode in which the first opening / closing cover is closed, the blower is operated, the second opening / closing cover is closed, and the opening / closing valve is open. The carbon dioxide separation and capture supply system according to claim 17.

19. The first operating mode is performed at night and the second operating mode is performed during the day.

19. The carbon dioxide separation and capture supply system of claim 10, 14, or 18.

20. In the second operating mode, the carbon dioxide adsorbing and releasing agent is heated by sunlight.

20. The carbon dioxide separation, capture and supply system according to claim 19.

21. In the second operating mode, the storage container is heated by sunlight, and the temperature of the carbon dioxide adsorbing and releasing agent increases.

20. The carbon dioxide separation, capture and supply system according to claim 19.

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