Reactor, gas recovery device, and gas recovery system

Abstract

A reactor provided with a honeycomb structure and a particulate functional material 50, the honeycomb structure having: an outer peripheral wall 10; and a porous partition wall (30) that is disposed inside the outer peripheral wall (10) and that partitions a first cell (23) and a second cell (24) that extend from the inflow end surface (20) to the outflow end surface (21) and through which a process gas containing a gas to be captured can flow, the first cell (23) and the second cell (24) being adjacent to each other with the partition wall (30) interposed therebetween, and the second cell (24) being filled with a functional material (50).

Description

Technical Field

[0001] The present invention relates to a reactor, a gas recovery device, and a gas recovery system. Background Art

[0002] As a countermeasure against global warming, there is an increasing demand for the effective utilization of recovering CO2 from combustion exhaust gas of CO2 emission sources such as factory exhaust gas and thermal power plants, directly recovering CO2 from the atmosphere (direct air capture: DAC) and fixing it, and methanation based on the recovered CO2.

[0003] As a main method for CO2 recovery, it has been proposed to adsorb CO2 on an adsorbent material capable of adsorbing CO2, change temperature, pressure, humidity, etc. to desorb CO2, recover it in the form of high-concentration CO2, use it as a chemical industry raw material, or inject it underground for immobilization, etc. The adsorbent material is used by being supported on a porous particle, porous particle, fiber filter, honeycomb structure, etc. (for example, Non-Patent Document 1).

[0004] Prior Art Documents

[0005] Non-Patent Documents

[0006] Non-Patent Document 1: "Cost and Evaluation of Direct Air Capture (DAC) Method of Carbon Dioxide (Vol. 2) - Adsorption Separation Process -", Low Carbon Society Strategy Center, National Institute of Advanced Industrial Science and Technology, March 2021 Summary of the Invention

[0007] Non-Patent Document 1 describes a reactor in which an adsorbent material (an adsorbent material layer is formed) is supported on the surface of the partition walls of a honeycomb structure made of andalusite. The thickness of the partition walls is 0.15 mm, the cell density is 400 cells / inch 2 (62 cells / cm 2 ), and the opening ratio is 75.0%. Since the CO2 recovery amount is proportional to the amount of the adsorbent material held in the reactor, in order to increase the CO2 recovery amount, as much adsorbent material as possible may be arranged in the reactor.

[0008] However, in the method of loading an adsorbent material on the surface of the partition walls of a honeycomb structure, if the loading amount of the adsorbent material is increased, the open cell ratio of the honeycomb structure decreases due to the thickness of the adsorbent material layer, and the pressure loss during the flow of the treatment gas containing CO2 increases. As a result, the kinetic energy required to flow the treatment gas through the honeycomb structure increases, and the operating cost of the reactor increases. In addition, when the thickness of the adsorbent material layer increases, it becomes difficult for the treatment gas to sufficiently reach the inside of the adsorbent material layer. Therefore, the CO2 adsorption performance also decreases. In the process of CO2 desorption, there is also a problem that it is difficult for CO2 to sufficiently desorb from the inside of the adsorbent material layer.

[0009] In addition, considering the deterioration of the adsorbent material during long-term use of the reactor, it is effective to hold as much adsorbent material as possible in the reactor to extend the maintenance period. However, in the above method, there is a limit to increasing the holding amount of the adsorbent material.

[0010] On the other hand, methods of loading an adsorbent material on porous particles and methods of forming the adsorbent material itself into a granular shape are also considered. However, compared with the method of loading an adsorbent material on the surface of the partition walls of a honeycomb structure, these methods are inferior in terms of the contact area with the treatment gas and the pressure loss. In addition, a method of forming the partition walls of a honeycomb structure from an adsorbent material is also considered. However, it is difficult for the treatment gas to sufficiently diffuse in the thickness direction of the partition walls, and the strength of the honeycomb structure also decreases.

[0011] It should be noted that the above has been described by taking as an example a reactor in which the gas to be captured is CO2 and an adsorbent material capable of adsorbing CO2 is used. However, even in the case of a reactor in which the gas to be captured is a component other than CO2 and a functional material other than an adsorbent material capable of adsorbing CO2 is used, the same problems as described above can occur.

[0012] The present invention has been implemented to solve the above-described problems, and the problem thereof is to provide a reactor, a gas recovery device, and a gas recovery system capable of suppressing an increase in pressure loss and increasing the recovery amount of the gas to be captured by increasing the holding amount of the functional material.

[0013] The inventors of the present invention have intensively studied a reactor equipped with a honeycomb structure, and as a result, have found that by selectively filling a functional material into a specific compartment of a honeycomb structure having a specific structure, the above problems can be solved, and thus the present invention has been completed. That is, the present invention is illustrated as follows.

[0014] (1) A reactor, characterized by comprising a honeycomb structure and a granular functional material, the honeycomb structure having: an outer peripheral wall; and

[0015] A porous partition wall disposed inside the outer peripheral wall and partitioning to form a first compartment and a second compartment that allow a processing gas containing a gas to be captured to flow from an inflow end face to an outflow end face.

[0016] The first compartment and the second compartment are adjacent to each other with the partition wall therebetween.

[0017] This functional material is filled in the second compartment.

[0018] (2) The reactor according to (1), characterized in that

[0019] It further includes a second sealing portion provided on the inflow end face side and / or the outflow end face side of the second compartment.

[0020] (3) The reactor according to (2), characterized in that

[0021] The second sealing portion is provided on the outflow end face side of the second compartment, and the second sealing portion is dense or porous.

[0022] (4) The reactor according to (3), characterized in that

[0023] It further includes a first sealing portion provided in the first compartment on the inflow end face side.

[0024] (5) The reactor according to (2), characterized in that

[0025] The second sealing portion is provided on the inflow end face side of the second compartment, and the second sealing portion is dense or porous.

[0026] (6) The reactor according to (5), characterized in that

[0027] It further includes a first sealing portion provided in the first compartment on the outflow end face side.

[0028] (7) The reactor according to (2), characterized in that

[0029] The second sealing portion is provided on the inflow end face side and the outflow end face side of the second compartment. The second sealing portion on the inflow end face side is dense, and the second sealing portion on the outflow end face side is dense or porous.

[0030] (8) The reactor according to (4) or (6), characterized in that

[0031] The first sealing portion is dense.

[0032] (9) The reactor according to any one of (1) to (8), characterized in that

[0033] In a cross-section orthogonal to the direction in which the first compartment and the second compartment extend, the shapes of the first compartment and the second compartment are triangular, quadrilateral, hexagonal, octagonal, or a combination thereof.

[0034] (10) The reactor according to any one of (1) to (9), characterized in that

[0035] The outer peripheral wall and the partition wall are mainly composed of one or more selected from cordierite, mullite, alumina, silicon carbide, and Si-bonded silicon carbide.

[0036] (11) The reactor according to any one of (1) to (10), characterized in that

[0037] The thickness of the partition wall is 0.05 mm to 5 mm.

[0038] (12) The reactor according to any one of (1) to (11), characterized in that

[0039] The porosity of the partition wall is 30% or more and less than 80%.

[0040] (13) The reactor according to any one of (1) to (12), characterized in that

[0041] The average pore diameter of the partition wall is 10 μm to 300 μm.

[0042] (14) The reactor according to any one of (1) to (13), characterized in that

[0043] The functional material is an adsorption material.

[0044] (15) The reactor according to (14), characterized in that

[0045] The adsorption material is at least one selected from amine compounds, organometallic complexes, and nanoporous ceramics or mesoporous silica supporting the amine compound and / or the organometallic complex.

[0046] (16) The reactor according to any one of (1) to (15), characterized in that

[0047] In the direction in which the second compartment extends, the particle size of the particulate functional material is smaller on the outflow end face side than at the center.

[0048] (17) The reactor according to any one of (1) to (16), characterized in that

[0049] In a direction orthogonal to the direction in which the second compartment extends, the particle size of the granular functional material is larger on the outer peripheral wall side than at the central portion.

[0050] (18) The reactor according to any one of (1) to (17), characterized in that

[0051] The first compartment is disposed at a position facing the outer peripheral wall.

[0052] (19) The reactor according to any one of (2) to (8), characterized in that

[0053] The second sealing portion is made of resin.

[0054] (20) The reactor according to (4) or (6), characterized in that

[0055] The first sealing portion is made of resin.

[0056] (21) The reactor according to any one of (1) to (20), characterized in that

[0057] The honeycomb structure has a quadrangular prism shape in which the length of one side of the inflow end face and the outflow end face is 100 to 500 mm, and the length in the direction in which the first compartment and the second compartment extend is 100 to 1000 mm.

[0058] (22) A gas recovery device for recovering and releasing a gas to be captured contained in a processing gas,

[0059] The gas recovery device is characterized by comprising:

[0060] The reactor according to any one of (1) to (21);

[0061] A gas supply pipe that can supply the processing gas or a purge gas to the inlet of the reactor; and

[0062] A gas discharge pipe that can discharge the processing gas or the purge gas from the outlet of the reactor.

[0063] (23) The gas recovery device according to (22), characterized in that

[0064] The gas supply pipe has two branched gas supply branch pipes, and the gas supply branch pipes are a first gas supply branch pipe capable of supplying the processing gas and a second gas supply branch pipe capable of supplying the purge gas,

[0065] The gas discharge pipe has two branched gas discharge branch pipes, the gas discharge branch pipes being a first gas discharge branch pipe capable of discharging the process gas and a second gas discharge branch pipe capable of discharging the purge gas.

[0066] The gas recovery device further includes: a supply gas switching valve capable of shutting off the first gas supply branch pipe or the second gas supply branch pipe, and a discharge gas switching valve capable of shutting off the first gas discharge branch pipe or the second gas discharge branch pipe.

[0067] (24) The gas recovery device according to (22), characterized in that

[0068] The gas supply pipe has two independent gas supply pipes, the gas supply pipes being a first gas supply pipe capable of supplying the process gas and a second gas supply pipe capable of supplying the purge gas.

[0069] The gas discharge pipe has two independent gas discharge pipes, the gas discharge pipes being a first gas discharge pipe capable of discharging the process gas and a second gas discharge pipe capable of discharging the purge gas.

[0070] The reactor can be disposed between the first gas supply pipe and the first gas discharge pipe or between the second gas supply pipe and the second gas discharge pipe.

[0071] The gas recovery device further includes: a transfer mechanism capable of transferring the reactor between the first gas supply pipe and the first gas discharge pipe or between the second gas supply pipe and the second gas discharge pipe.

[0072] (25) The gas recovery device according to (22), characterized in that

[0073] The gas recovery device further includes: a heating mechanism capable of heating the reactor.

[0074] (26) A gas recovery system for recovering and releasing a gas to be captured contained in a process gas.

[0075] The gas recovery system is characterized by including:

[0076] A gas recovery device having a loading and unloading portion capable of loading and unloading the reactor according to any one of (1) to (21), a gas supply pipe capable of supplying the process gas to the inlet of the reactor, and a gas discharge pipe capable of discharging the process gas from the outlet of the reactor.

[0077] A gas release device, which has a loading and unloading part for loading and unloading the reactor, a gas supply pipe for supplying purge gas to the inlet of the reactor, and a gas discharge pipe for discharging the purge gas from the outlet of the reactor; and

[0078] A transfer device, which can transfer the reactor that has recovered the gas to be captured in the gas recovery device to the gas release device, and transfer the reactor that has released the gas to be captured in the gas release device to the gas recovery device.

[0079] (27) The gas recovery system according to (26), characterized in that

[0080] The transfer device includes a vehicle.

[0081] Advantages of the Invention

[0082] According to the present invention, a reactor, a gas recovery device, and a gas recovery system can be provided, which can suppress an increase in pressure loss and increase the recovery amount of the gas to be captured by increasing the holding amount of the functional material. Description of the Drawings

[0083] Figure 1A It is a schematic diagram of the inlet end face and the outlet end face of the reactor according to an embodiment of the present invention.

[0084] Figure 1B is Figure 1A a schematic diagram of the cross-section of the d-d' line of

[0085] Figure 2A It is a schematic diagram of the cross-section parallel to the direction in which each compartment extends of the reactor according to another embodiment of the present invention.

[0086] Figure 2B It is a schematic diagram of the cross-section parallel to the direction in which each compartment extends of the reactor according to another embodiment of the present invention.

[0087] Figure 3A It is a schematic diagram of the cross-section parallel to the direction in which each compartment extends of the reactor according to another embodiment of the present invention.

[0088] Figure 3B It is a schematic diagram of the cross-section parallel to the direction in which each compartment extends of the reactor according to another embodiment of the present invention.

[0089] Figure 4A It is a schematic diagram of the cross-section parallel to the direction in which each compartment extends of the reactor according to another embodiment of the present invention.

[0090] Figure 4BIt is a schematic view of a cross-section parallel to the direction in which each compartment extends of the reactor according to another embodiment of the present invention.

[0091] Figure 5A It is a schematic view of the inflow end face of the reactor according to another embodiment of the present invention.

[0092] Figure 5B It is Figure 5A a schematic view of the outflow end face of the reactor of

[0093] Figure 5C It is Figure 5A and Figure 1B a schematic view of the cross-section of the a-a' line of

[0094] Figure 5D It is a partially enlarged view for explaining the flow of the processing gas.

[0095] Figure 6A It is a schematic view of the inflow end face of the reactor according to another embodiment of the present invention.

[0096] Figure 6B It is Figure 6A a schematic view of the outflow end face of the reactor of

[0097] Figure 7A It is a schematic view of a cross-section parallel to the direction in which each compartment extends of the reactor according to another embodiment of the present invention.

[0098] Figure 7B It is a partially enlarged view for explaining the flow of the processing gas.

[0099] Figure 8 It is a partially enlarged view of the inflow end face for explaining the shape of each compartment.

[0100] Figure 9 It is a partially enlarged view of the inflow end face for explaining the shape of each compartment.

[0101] Figure 10 It is a partially enlarged view of the inflow end face for explaining the shape of each compartment.

[0102] Figure 11 It is a partially enlarged view of the inflow end face for explaining the shape of each compartment.

[0103] Figure 12 It is a partially enlarged view of the inflow end face for explaining the shape of each compartment.

[0104] Figure 13 It is a partially enlarged view of the inflow end face for explaining the shape of each compartment.

[0105] Figure 14AIt is a schematic view of the inflow end face of the reactor involved in another embodiment of the present invention.

[0106] Figure 14B It is Figure 14A a schematic view of the outflow end face of the reactor.

[0107] Figure 14C It is Figure 14A and Figure 14B a schematic view of the cross section of the c-c' line of.

[0108] Figure 15 It is a partially enlarged view for explaining the flow of the processing gas.

[0109] Figure 16 It is a schematic view showing the configuration of the gas recovery device according to one embodiment of the present invention.

[0110] Figure 17 It is a schematic view showing the configuration of the gas recovery device according to another embodiment of the present invention.

[0111] Figure 18 It is a schematic view showing the configuration of the gas recovery system according to one embodiment of the present invention. Detailed Embodiments

[0112] The reactor according to the embodiment of the present invention includes a honeycomb structure body and a granular functional material. The honeycomb structure body has: an outer peripheral wall; and a porous partition wall disposed inside the outer peripheral wall and partitioning and forming a first compartment and a second compartment that can communicate with a processing gas containing a gas to be captured and extend from an inflow end face to an outflow end face. The first compartment and the second compartment are adjacent to each other with the partition wall therebetween, and the functional material is filled in the second compartment.

[0113] In addition, the gas recovery device according to the embodiment of the present invention is used to recover and release the gas to be captured contained in the processing gas. The gas recovery device includes: the reactor; a gas supply pipe that can supply the processing gas or a purge gas to the inlet of the reactor; and a gas discharge pipe that can discharge the processing gas or the purge gas from the outlet of the reactor.

[0114] In addition, the gas recovery system according to an embodiment of the present invention is used to recover and release a gas to be captured contained in a process gas. The gas recovery system includes: a gas recovery device having a loading and unloading section that can be loaded and unloaded to and from the reactor, a gas supply pipe that can supply the process gas to the inlet of the reactor, and a gas discharge pipe that can discharge the process gas from the outlet of the reactor; a gas release device having a loading and unloading section that can be loaded and unloaded to and from the reactor, a gas supply pipe that can supply a purge gas to the inlet of the reactor, and a gas discharge pipe that can discharge the purge gas from the outlet of the reactor; and a transfer device that can transfer the reactor that has recovered the gas to be captured in the gas recovery device to the gas release device, and transfer the reactor that has released the gas to be captured in the gas release device to the gas recovery device.

[0115] The reactor, gas recovery device, and gas recovery system according to the embodiment of the present invention can suppress an increase in pressure loss and increase the recovery amount of the gas to be captured by increasing the retention amount of the functional material by adopting the above-described configuration. In addition, suppressing the increase in pressure loss can reduce the kinetic energy required for the process gas to flow through the honeycomb structure, and thus reduce the operating cost of the reactor.

[0116] Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. The present invention is not limited to the following embodiments, and it should be understood that a solution obtained by appropriately changing, improving, etc. the following embodiments based on the common knowledge of those skilled in the art without departing from the gist of the present invention also falls within the scope of the present invention.

[0117] <Reactor>

[0118] The reactor according to the embodiment of the present invention can be well used to recover a gas to be captured contained in a process gas. The process gas is not particularly limited, and examples thereof include exhaust gas discharged from factories, power plants, etc., and the atmosphere. The exhaust gas is not particularly limited, and examples thereof include coal gasification gas obtained by gasifying fossil fuels and coal in thermal power plants, ironworks, etc., and combustion exhaust gas generated when natural gas is burned. In addition, the gas to be captured is not particularly limited, and examples thereof include acidic gases such as carbon dioxide (CO2), nitrogen oxides (NO x ), sulfur oxides (SO x ), and hydrogen sulfide (H2S). Among them, the reactor according to the embodiment of the present invention is particularly useful for recovering carbon dioxide (CO2) contained in combustion exhaust gas and the atmosphere.

[0119] Figure 1AIt is a schematic view of the inflow end face and the outflow end face of the reactor according to an embodiment of the present invention. Figure 1B is Figure 1A a schematic view of the cross-section (a cross-section parallel to the direction in which each compartment extends) of the d-d' line of Figure 1B It should be noted that in

[0120] as Figure 1A and Figure 1B shown, the reactor includes a honeycomb structure and a granular functional material 50. The honeycomb structure has: an outer peripheral wall 10; and a porous partition wall 30 disposed inside the outer peripheral wall 10 and partitioning and forming a first compartment 23 and a second compartment 24 extending from the inflow end face 20 to the outflow end face 21. The first compartment 23 and the second compartment 24 are adjacent to each other with the partition wall 30 interposed therebetween, and the functional material 50 is filled in the second compartment 24. The first compartment 23 and the second compartment 24 can allow a processing gas containing a gas to be captured to flow therethrough.

[0121] In addition, Figure 1A in

[0122] as Figure 1B shown, in this reactor, the processing gas flows into the first compartment 23 and the second compartment 24 on the inflow end face 20 side. Although the functional material 50 is filled in the second compartment 24, the processing gas can flow through the gaps of the filled functional material 50. In addition, a part of the processing gas flowing into the first compartment 23 flows into the second compartment 24 through the porous partition wall 30. Conversely, a part of the processing gas flowing into the second compartment 24 flows into the first compartment 23 through the porous partition wall 30. The processing gas flowing into the second compartment 24 is recovered (for example, adsorbed) the gas to be captured by the functional material 50. Then, the processing gas flowing into the second compartment 24 flows out from the outflow end face 21.

[0123] The reactor may further include a second sealing portion 41 provided on the inflow end face 20 side and / or the outflow end face 21 side of the second compartment 24. By providing the second sealing portion 41, it is easy to control the flow of the processing gas, and thus, the recovery efficiency of the gas to be captured can be improved.

[0124] Figure 2ASchematic cross-section parallel to the direction in which each compartment extends of a reactor in which a second sealing portion 41 is provided on the outflow end face 21 side of the second compartment 24 and the second sealing portion 41 is of dense quality.

[0125] As Figure 2A shown, in this reactor, the processing gas flows into the first compartment 23 and the second compartment 24 from the inflow end face 20 side. A part of the processing gas flowing into the first compartment 23 flows into the second compartment 24 through the porous partition wall 30. In addition, a part of the processing gas flowing into the second compartment 24 flows into the first compartment 23 through the porous partition wall 30. The processing gas flowing into the second compartment 24 is recovered (e.g., adsorbed) for the gas to be captured by the functional material 50. The processing gas from which the gas to be captured has been recovered in the second compartment 24 flows into the first compartment 23 through the porous partition wall 30 and flows out from the outflow end face 21 of the first compartment 23.

[0126] Here, "dense quality" in this specification means that the porosity is 10% or less, and the porosity may also be 5% or less.

[0127] Figure 2B Schematic cross-section parallel to the direction in which each compartment extends of a reactor in which a second sealing portion 41 is provided on the outflow end face 21 side of the second compartment and the second sealing portion 41 is of porous quality.

[0128] As Figure 2B shown, in this reactor, since the second sealing portion 41 is of porous quality, in addition to Figure 2A the flow of the processing gas in the reactor shown, the processing gas from which the gas to be captured has been recovered in the second compartment 24 flows out from the outflow end face 21 of the second compartment through the second sealing portion 41. Therefore, compared with the reactor Figure 2A shown, this reactor can suppress the pressure loss when the processing gas flows through and increase the recovery amount of the gas to be captured.

[0129] Here, "porous quality" in this specification means that the porosity is 20% or more, and the porosity may also be 30% or more.

[0130] Figure 3A Schematic cross-section parallel to the direction in which each compartment extends of a reactor in which a second sealing portion 41 is provided on the inflow end face 20 side of the second compartment 24 and the second sealing portion 41 is of dense quality.

[0131] As Figure 3AAs shown, in this reactor, the processing gas flows into the first compartment 23 from the inflow end face 20 side. A part of the processing gas flowing into the first compartment 23 flows into the second compartment 24 through the porous partition wall 30. The processing gas flowing into the second compartment 24 is recovered (e.g., adsorbed) for the gas to be captured by the functional material 50. The processing gas from which the gas to be captured has been recovered in the second compartment 24 flows out from the outflow end face 21 of the second compartment 24, or flows into the first compartment 23 through the porous partition wall 30 and flows out from the outflow end face 21 of the first compartment 23.

[0132] Figure 3B It is a schematic cross-sectional view parallel to the extending direction of each compartment of a reactor in which a second sealing portion 41 is provided on the inflow end face 20 side of the second compartment 24 and the second sealing portion 41 is porous.

[0133] As Figure 3B shown, in this reactor, since the second sealing portion 41 is porous, in addition to Figure 3A the flow of the processing gas in the reactor shown, the processing gas flows into the second compartment 24 through the second sealing portion 41. Therefore, compared with the reactor Figure 3A shown, this reactor can suppress the pressure loss when the processing gas flows through and increase the recovery amount of the gas to be captured.

[0134] Figure 4A It is a schematic cross-sectional view parallel to the extending direction of each compartment of a reactor in which second sealing portions 41 are provided on the inflow end face 20 side and the outflow end face 21 side of the second compartment 24, the second sealing portion 41 on the inflow end face 20 side is dense, and the second sealing portion 41 on the outflow end face 21 side is dense.

[0135] As Figure 4A shown, in this reactor, the processing gas flows into the first compartment 23 from the inflow end face 20 side. A part of the processing gas flowing into the first compartment 23 flows into the second compartment 24 through the porous partition wall 30. The processing gas flowing into the second compartment 24 is recovered (e.g., adsorbed) for the gas to be captured by the functional material 50. The processing gas from which the gas to be captured has been recovered in the second compartment 24 flows into the first compartment 23 through the porous partition wall 30 and flows out from the outflow end face 21 of the first compartment 23.

[0136] Figure 4B It is a schematic cross-sectional view parallel to the extending direction of each compartment of a reactor in which second sealing portions 41 are provided on the inflow end face 20 side and the outflow end face 21 side of the second compartment 24, the second sealing portion 41 on the inflow end face 20 side is dense, and the second sealing portion 41 on the outflow end face 21 side is porous.

[0137] As Figure 4BAs shown, in this reactor, the second sealing portion 41 on the outflow end face 21 side is porous. Therefore, in addition to the flow of the processing gas in the reactor shown in Figure 4A , the processing gas flows out from the outflow end face 21 through the second sealing portion 41. Therefore, compared with the reactor shown in Figure 4A , this reactor can suppress the pressure loss when the processing gas flows through, and increase the recovery amount of the gas to be captured.

[0138] The reactor may further include a first sealing portion 40 provided in the first compartment 23 on the inflow end face 20 side. By providing the first sealing portion 40 at such a position, it is easy to control the flow of the processing gas. Therefore, the recovery efficiency of the gas to be captured can be improved. A schematic diagram of a reactor having such a structure is shown in Figure 5A - 5C .

[0139] Figure 5A is a schematic diagram of the inflow end face of the reactor. Figure 5B is Figure 5A a schematic diagram of the outflow end face of the reactor. Figure 5C is Figure 5A and Figure 5B a schematic diagram of the cross-section of the a-a' line.

[0140] As Figure 5A - 5C shown, this reactor includes a honeycomb structure body and a functional material 50. The honeycomb structure body has: an outer peripheral wall 10; a porous partition wall 30 disposed inside the outer peripheral wall 10 and partitioning and forming a first compartment 23 and a second compartment 24 extending from the inflow end face 20 to the outflow end face 21; a first sealing portion 40 provided in the first compartment 23 on the inflow end face 20 side; and a second sealing portion 41 provided in the second compartment 24 on the outflow end face 21 side. The first compartment 23 and the second compartment 24 are adjacent to each other with the partition wall 30 interposed therebetween, and the functional material 50 is filled in the second compartment 24. The first compartment 23 and the second compartment 24 can allow the processing gas containing the gas to be captured to flow through.

[0141] Here, a partial enlarged view of the same cross-section as that for explaining the flow of the processing gas is shown in Figure 5C in Figure 5D . In addition, it should be noted that: Figure 5D in Figure 5C , for the sake of easy understanding of this explanation, the length in the extending direction of each compartment is shorter than that in Figure 5D . In addition, in

[0142] As Figure 5DAs shown, in the reactor 100, the processing gas flows into the second compartment 24 where a sealing portion is not provided on the inflow end face 20 side. Although the functional material 50 is filled in the second compartment 24, the processing gas can flow through the gaps between the filled functional materials 50. The processing gas flowing into the second compartment 24 is recovered (e.g., adsorbed) for the gas to be captured through the functional material 50. Since the second sealing portion 41 is provided on the outflow end face 21 side of the second compartment 24, the processing gas that has flowed into the second compartment 24 and has had the gas to be captured recovered flows into the first compartment 23 through the porous partition wall 30. Then, the processing gas flowing into the first compartment 23 flows out from the outflow end face 21.

[0143] Figure 5A - 5C In the figure, although an example is shown where the first compartment 23 and the second compartment 24 are adjacent with the partition wall 30 entirely sandwiched therebetween, it can be that at least a part between the first compartment 23 and the second compartment 24 is adjacent with the partition wall 30 sandwiched therebetween (that is, there can be a part where the first compartment 23 and the second compartment 24 are adjacent without the partition wall 30 sandwiched therebetween). Schematic views of the inflow end face and the outflow end face of the reactor in such a form are shown in Figure 6A and Figure 6B . It should be noted that Figure 6A and Figure 6B The cross-section of the b - b' line of Figure 5A is the same as the cross-section of the a - a' line of

[0144] and is thus omitted. Figure 6A and Figure 6B As shown in

[0145] In this reactor, in the direction of the b - b' line, the first compartment 23 and the second compartment 24 are adjacent with the partition wall 30 sandwiched therebetween. On the other hand, in the direction orthogonal to the b - b' line, the first compartment 23 and the second compartment 24 are adjacent without the partition wall 30 sandwiched therebetween. Even with such a structure of the reactor 200, the same above-described effects as those of the reactor 100 can be obtained.

[0145] It should be noted that the arrangements of the first compartment 23 and the second compartment 24 are not limited to the forms exemplified in Figure 5A - 5C and Figure 6A - 6B , and at least a part between the first compartment 23 and the second compartment 24 may be adjacent with the partition wall 30 sandwiched therebetween.

[0146] The reactor may further include a first sealing portion 40, and the first sealing portion 40 is provided in the first compartment 23 on the outflow end face 21 side. By providing the first sealing portion 40 at such a position, it is easy to control the flow of the processing gas, and thus the recovery efficiency of the gas to be captured can be improved. Schematic views of the cross-section parallel to the direction in which each compartment (the first compartment 23 and the second compartment 24) extends of the reactor having such a structure are shown in Figure 7A . In addition, for explaining the flow of the processing gas of this reactor,Figure 7A A partial enlarged view of the same cross-section is shown in Figure 7B . In addition, it should be noted that: Figure 7B In Figure 7A is shorter in the length ratio in the direction in which each compartment extends, from the viewpoint of facilitating understanding of this description.

[0147] As Figure 7A and Figure 7B shown, this reactor has: a first sealing portion 40 provided in the first compartment 23 on the outflow end face 21 side, and a second sealing portion 41 provided in the second compartment 24 on the inflow end face 20 side. Other structures can be the same as those of the above-mentioned reactor. In a reactor having such a structure, as Figure 7B shown, the processing gas flows into the first compartment 23 where no sealing portion is provided on the inflow end face 20 side. Since the first sealing portion 40 is provided on the outflow end face 21 side, the processing gas flowing into the first compartment 23 flows into the second compartment 24 through the porous partition wall 30. The processing gas flowing into the second compartment 24 is recovered (e.g., adsorbed) for the gas to be trapped by the functional material 50. Then, the processing gas from which the gas to be trapped has been recovered flows out from the outflow end face 21.

[0148] Hereinafter, each component constituting the above-mentioned reactor will be described in detail.

[0149] (1. Honeycomb structure)

[0150] The shape of the honeycomb structure may have the above-mentioned structure and is not particularly limited. For example, the outer shape of the cross-section of the honeycomb structure orthogonal to the direction in which the flow paths (the first compartment 23 and the second compartment 24) extend can be a polygon such as a triangle, a quadrilateral, a hexagon, an octagon, a circular shape, an elliptical shape, a horizontally long elliptical shape, an oval shape, an oblong shape, a quadrilateral with roundness (a quadrilateral in which each side and each corner are formed by a curve, the radius of curvature of each side is greater than the radius of curvature of each corner, and the whole is formed by a curve), etc. Among them, the shape of the honeycomb structure is preferably a quadrilateral in terms of the outer shape of the cross-section (that is, the shape of the honeycomb structure is a quadrangular prism). It should be noted that the end faces (the inflow end face 20 and the outflow end face 21) have the same shape as this cross-section.

[0151] In a preferred embodiment, the honeycomb structure has a quadrangular prism shape in which one side length of the inflow end face 20 and the outflow end face 21 is 100 to 500 mm (preferably 200 to 400 mm), and the length in the direction in which the first compartment 23 and the second compartment 24 extend is 100 to 1000 mm (preferably 300 to 500 mm). If the honeycomb structure is of such a size, the filling amount of the functional material 50 in the second compartment 24 can be sufficiently ensured, and thus the practicality as a reactor can be ensured.

[0152] The shapes of the respective compartments (the first compartment 23 and the second compartment 24) are not particularly limited, and in a cross-section of the honeycomb structure orthogonal to the direction in which the flow paths (the first compartment 23 and the second compartment 24) extend, they can be polygons such as triangles, quadrilaterals, hexagons, octagons, circular shapes, oval shapes, horizontally elongated oval shapes, egg-shaped, oblong shapes with arcs, etc. The shape of each compartment can be a single shape, or two or more types can be combined. Additionally, among the shapes of the above-mentioned respective compartments, triangles, quadrilaterals, hexagons, octagons, or combinations thereof are preferred. By providing the respective compartments with such shapes, the pressure loss during the flow of the processing gas can be reduced. It should be noted that the shape of each compartment in this cross-section is the same as the shape of each compartment in the end faces (the inflow end face 20 and the outflow end face 21).

[0153] Here, combinations of compartments with various shapes are exemplified in Figures 8 - 13 . Figures 8 - 13 is a partial enlarged view of the inflow end face of a reactor having compartments with various shapes.

[0154] Figure 8 's solution has two types of hexagons compartments with different sizes. The hexagonal second compartment 24 is smaller than the hexagonal first compartment 23.

[0155] Figure 9 's solution has hexagonal compartments of the same size.

[0156] Figure 10 's solution has two types of triangular compartments with different sizes. The first compartment 23 is composed of two types of triangular compartments of different sizes, and among them, the smaller triangular compartment is the same size as the second compartment 24.

[0157] Figure 11 's solution has an octagonal first compartment 23 and octagonal and quadrilateral second compartments 24. The octagonal first compartment 23 and the octagonal second compartment 24 are the same size.

[0158] Figure 12 's solution has three types of quadrilateral compartments with different sizes. The size of the second compartment 24 is smaller than that of the first compartment 23.

[0159] Figure 13 's solution has quadrilateral and hexagonal compartments. The first compartment 23 is a quadrilateral compartment of the same size. The second compartment 24 is a hexagonal compartment.

[0160] Figures 8 - 13 In the solution of , they are all arranged such that the first compartment 23 and the second compartment 24 are adjacent with a partition wall 30 interposed therebetween.

[0161] The honeycomb structure is preferably provided with the first compartment 23 at a position facing the outer peripheral wall 10.

[0162] Here, a schematic view of the inflow end face of a reactor having such a configuration is shown in Figure 14A , and a schematic view of the outflow end face is shown in Figure 14B , and the schematic view of the cross-section of the c-c' line of Figure 14A and Figure 14B is shown in Figure 14C .

[0163] As Figures 14A - 14C shown, for this reactor, a first compartment 23 is arranged at a position facing the outer peripheral wall 10, and other than this, it is the same as the reactor shown in Figures 5A - 5C .

[0164] In the case where a second compartment 24 filled with a functional material 50 is arranged at a position facing the outer peripheral wall 10, the outflow path of the processing gas becomes fewer. Therefore, sometimes the processing gas does not sufficiently flow through the second compartment 24 facing the outer peripheral wall 10, and the effect of the functional material 50 cannot be obtained sufficiently. Thus, as Figures 14A - 14C shown, by arranging the first compartment 23 at a position facing the outer peripheral wall 10, it is possible to avoid wasteful use of the functional material 50 that is difficult to fully exert its effect, and thus the manufacturing cost can be reduced.

[0165] The honeycomb structure may also be a honeycomb bonded body having a plurality of honeycomb cells and a bonding layer that indirectly bonds the outer peripheral surfaces (the outer peripheral surfaces of the honeycomb cells parallel to the direction in which the flow path extends) of the plurality of honeycomb cells to each other. By using the honeycomb bonded body, the occurrence of cracking can be suppressed and the total cross-sectional area of the compartments, which is very important for ensuring the flow rate of the processing gas, can be increased. The bonding layer can be formed using a bonding material. As the bonding material, there is no particular limitation, and a material obtained by adding a solvent such as water to a ceramic material and making it into a paste form can be used. The bonding material may contain the same material as the outer peripheral wall 10 and the partition wall 30. In addition to the function of bonding the honeycomb cells to each other, the bonding material can also be used as an outer peripheral coating material after the honeycomb cells are bonded.

[0166] The thickness of the partition wall 30 is not particularly limited. From the viewpoints of ensuring the strength of the honeycomb structure and reducing the pressure loss when the processing gas passes through the partition wall 30, it is preferably 0.05 mm to 5 mm, more preferably 0.10 mm to 4.5 mm, and further preferably 0.15 mm to 4 mm.

[0167] It should be noted that the "thickness of the partition wall 30" in this specification means: in a cross-section orthogonal to the direction in which the flow path (the first compartment 23 and the second compartment 24) extends in the honeycomb structure, when the centers of gravity of adjacent compartments are connected by a line segment, the length of the line segment passing through the partition wall 30. The thickness of the partition wall 30 refers to the average value of the thicknesses of all the partition walls 30.

[0168] The porosity of the partition wall 30 is not particularly limited. From the viewpoints of ensuring the strength of the honeycomb structure and reducing the pressure loss when the processing gas passes through the partition wall 30, it is preferably 30% or more and less than 80%, more preferably 35% to 75%, and further preferably 40% to 70%.

[0169] It should be noted that the "porosity of the partition wall 30" in this specification refers to the porosity of the partition wall 30 measured by the mercury intrusion method in accordance with JIS R1655:2003.

[0170] The average pore diameter of the partition wall 30 is not particularly limited. From the viewpoints of ensuring the strength of the honeycomb structure and reducing the pressure loss when the processing gas passes through the partition wall 30, it is preferably 10 μm to 300 μm, more preferably 15 μm to 280 μm, and further preferably 20 μm to 260 μm.

[0171] It should be noted that the "average pore diameter of the partition wall 30" in this specification refers to the pore diameter of the partition wall 30 at the cumulative value of 50% in the pore size distribution obtained by the mercury intrusion method in accordance with JIS R1655:2003.

[0172] The thickness of the outer peripheral wall 10 is not particularly limited. From the viewpoints of ensuring the strength of the honeycomb structure, etc., it is preferably 0.05 mm to 10 mm, more preferably 0.20 mm to 8 mm, and further preferably 0.30 mm to 6 mm.

[0173] It should be noted that in this specification, the thickness of the outer peripheral wall 10 refers to the length in the normal direction of the outer peripheral surface from the boundary between the outer peripheral wall 10 and the outermost peripheral side compartment or partition wall 30 to the outer peripheral surface of the honeycomb structure in a cross-section orthogonal to the direction in which the flow path (the first compartment 23 and the second compartment 24) extends.

[0174] The compartment density of the honeycomb structure is not particularly limited. From the viewpoints of ensuring the strength of the honeycomb structure and increasing the filling amount of the functional material 50, etc., it is preferably 0.05 compartments / cm 2 ~25 compartments / cm 2 and more preferably 0.1 compartments / cm 2 ~20 compartments / cm 2 and further preferably 0.5 compartments / cm 2 ~15 compartments / cm 2 .

[0175] It should be noted that the "compartment density" in this specification refers to the value obtained by dividing the number of compartments by the area of one end face of the honeycomb structure (the total area of the partition wall 30, the first compartment 23, and the second compartment 24 excluding the outer peripheral wall 10).

[0176] The materials of the outer peripheral wall 10 and the partition wall 30 are not particularly limited. From the viewpoint of ensuring the strength of the honeycomb structure, it is preferable to use one or more selected from cordierite, mullite, alumina, silicon carbide, and Si-bonded silicon carbide as the main component.

[0177] The first plugging portion 40 is not particularly limited, and is preferably dense. By adopting such a configuration, the processing gas can easily flow in the flow path as described above.

[0178] The second plugging portion 41 is not particularly limited, and is preferably porous. By adopting such a configuration, as Figure 15 shown, the processing gas from which the gas to be captured has been recovered by the functional material 50 also flows out from the outflow end face 21 through the porous second plugging portion 41. Therefore, the pressure loss during the flow of the processing gas can be reduced. It should be noted that Figure 15 is a partial enlarged view of the same cross section as Figure 5D for explaining the flow of the processing gas.

[0179] In addition, in the case of the reactor shown in Figure 7A and Figure 7B similarly, the processing gas flows into the second compartment 24 through the second plugging portion 41 provided on the inflow end face 20. Therefore, the pressure loss during the flow of the processing gas can be reduced.

[0180] The materials of the first plugging portion 40 and the second plugging portion 41 are not particularly limited and can be made of known materials such as ceramics and resins. However, from the viewpoints of manufacturing cost and productivity, it is preferably made of resin. The characteristics of the first plugging portion 40 and the second plugging portion 41 can be ensured by appropriately selecting the types of materials used.

[0181] For example, when the first plugging portion 40 and the second plugging portion 41 are dense, a resin sheet, dense ceramics or glass can be selected for use. From the viewpoints of manufacturing cost and productivity, it is preferably to select a resin sheet for use.

[0182] In addition, when the second plugging portion 41 is porous, a resin porous sheet, porous ceramics or glass can be selected for use. From the viewpoints of manufacturing cost and productivity, it is preferably to select a resin porous sheet for use.

[0183] (2. Functional Material)

[0184] As the functional material 50, it is sufficient that it can recover the gas to be captured contained in the processing gas, and there is no particular limitation. For example, an adsorption material can be used. By using an adsorption material as the functional material 50, the gas to be captured can be adsorbed and recovered, and by changing conditions such as temperature, the recovered gas to be captured can be easily desorbed.

[0185] Here, the "adsorbent material" in this specification refers to: a material that can attract and accumulate the gas to be captured contained in the processing gas.

[0186] As the adsorbent material, it can be appropriately selected according to the type of the gas to be captured, and there is no particular limitation. As an adsorbent material effective for adsorbing gases to be captured such as carbon dioxide (CO2), examples include: amine compounds, organometallic complexes, nanoporous ceramics or mesoporous silica supported with amine compounds and / or organometallic complexes, etc. These adsorbent materials can be used alone or in combination of two or more.

[0187] As for the amine compound, there is no particular limitation, and examples include: monoethanolamine (MEA), N-methyldiethanolamine (MDEA), etc.

[0188] As for the organometallic complex, there is no particular limitation, and examples include porous organometallic structures (MOF: Metal-organic Framework) having a structure capable of adsorbing the gas to be captured into pores, etc.

[0189] The shape of the functional material 50 is granular. By using the granular functional material 50, it is possible to make the functional material 50 difficult to fall off from the second compartment 24, and moreover, it is possible to increase the space between the functional materials 50, thus reducing the pressure loss.

[0190] Here, "granular" in this specification refers to: shapes such as spherical, cylindrical, elliptical cylindrical, multi-prisms (such as triangular prism, quadrangular prism, pentagonal prism, hexagonal prism, etc.) having a substantially constant thickness, and its cross-section is circular, elliptical, polygonal, etc. As the particle size (hereinafter sometimes referred to as "particle diameter") of the granular functional material 50, there is no particular limitation, for example, it is 0.001 to 10 mm, preferably 0.1 to 10 mm, more preferably 0.5 to 10 mm, and further preferably 1 to 10 mm. It should be noted that the particle diameter refers to: the average value of the minor axis and the major axis. A typical granular functional material 50 is a spherical or cylindrical material with a diameter or length of 0.3 to 10 mm.

[0191] The particle diameter of the granular functional material 50 is not particularly limited, and it is preferably smaller on the outflow end face 21 side than in the central part in the direction in which the second compartment 24 extends. By adopting such a configuration, it is possible to increase the contact area of the functional material 50 on the outflow end face 21 side, and thus, it is easy to reliably recover the gas to be captured contained in the processing gas.

[0192] Here, the particle size of the particulate functional material 50 is determined by the following method. Using a video microscope manufactured by Keyence Corporation, the diameter of the smallest circle in the circle circumscribing the particulate functional material 50 is measured. 100 particulate functional materials 50 are randomly selected for this measurement, and the average value is set as the particle size of the particulate functional material 50.

[0193] The particle size of the particulate functional material 50 is preferably larger on the outer peripheral wall 10 side than in the central portion in a direction orthogonal to the direction in which the second compartment 24 extends. The processing gas easily flows in the central portion. On the other hand, compared with the central portion, the processing gas hardly flows on the outer peripheral wall 10 side. Thus, by adopting the above-described configuration, it is easy to suppress the processing gas from preferentially flowing into the second compartment 24 in the central portion, and the processing gas uniformly flows into the whole in a direction orthogonal to the direction in which the second compartment 24 extends.

[0194] The filling rate of the particulate functional material 50 in the second compartment 24 is not particularly limited, and is preferably 20 to 70%. By controlling the filling rate like this, the recovery efficiency of the gas to be captured contained in the processing gas can be improved.

[0195] Here, the filling rate can be measured as follows: for example, the mass (kg) of the filled particles is divided by the density of the particles (kg / m 3 ), the volume of the filled particles is calculated, this volume is divided by the volume of the second compartment 24 (m 3 ) and multiplied by 100, thereby measuring the filling rate.

[0196] The reactor according to the embodiment of the present invention can be arranged such that the direction in which each compartment extends is a horizontal direction, or can be arranged and used such that the direction in which each compartment extends is a vertical direction, the inflow end face 20 is the upper part, and the outflow end face 21 is the bottom.

[0197] <Method for manufacturing the reactor>

[0198] The method for manufacturing the reactor according to the embodiment of the present invention is not particularly limited as long as it can obtain the above structure.

[0199] For example, the reactor according to the embodiment of the present invention can be manufactured as follows: Prepare a honeycomb structure having an outer peripheral wall 10 and a porous partition wall 30 disposed inside the outer peripheral wall 10, and partitioning to form a first compartment 23 and a second compartment 24 that allow a processing gas containing a gas to be captured to flow from an inflow end face 20 to an outflow end face 21. The first compartment 23 and the second compartment 24 are adjacent to each other with the partition wall 30 interposed therebetween, and a functional material 50 is filled in the second compartment 24. When the first sealing portion 40 and the second sealing portion 41 are provided at predetermined positions of the honeycomb structure, the first sealing portion 40 and the second sealing portion 41 can be formed at an appropriate stage.

[0200] As an example, the manufacturing method of the Figures 5A - 5D reactor shown will be described. The manufacturing method of this reactor includes the following steps: Prepare a honeycomb structure having an outer peripheral wall 10 and a porous partition wall 30 disposed inside the outer peripheral wall 10, and partitioning to form a first compartment 23 and a second compartment 24 that allow a processing gas containing a gas to be captured to flow from an inflow end face 20 to an outflow end face 21. The first compartment 23 and the second compartment 24 are adjacent to each other with the partition wall 30 interposed therebetween (step A); form a second sealing portion 41 on the outflow end face 21 side of the second compartment 24 (step B); fill the second compartment 24 with a functional material 50 (step C); and form a first sealing portion 40 on the inflow end face 20 side of the first compartment 23 (step D). It should be noted that a reactor having other structures can be manufactured with reference to the manufacturing method of this reactor.

[0201] In step A, the manufacturing method of the honeycomb structure is not particularly limited and can be implemented according to methods well known in the art. For example, the honeycomb structure can be manufactured as follows.

[0202] First, an unfired body containing ceramic powder is extruded into a desired shape to produce a honeycomb formed body. At this time, by selecting an appropriate die and fixture, the shape and density of each compartment, the shape and thickness of the partition wall 30 and the outer peripheral wall 10, etc. can be controlled. It should be noted that as the ceramic powder, the powder of the aforementioned ceramic, the raw material powder that becomes the aforementioned ceramic after firing (such as cordierite-forming raw material), etc. can be used. Cordierite-forming raw material refers to a raw material that becomes cordierite after firing. The cordierite-forming raw material preferably has a chemical composition of alumina (Al2O3) (including the amount of aluminum hydroxide converted to alumina): 30 to 45% by mass, magnesia (MgO): 11 to 17% by mass, and silica (SiO2): 42 to 57% by mass. In addition, the unfired body can contain a binder, a pore former, a dispersant, water, an organic solvent, etc. It should be noted that the porosity and average pore diameter of the partition wall 30 can be controlled by appropriately selecting the types and amounts of the ceramic powder, binder, pore former, and dispersant used.

[0203] Next, by drying and firing the honeycomb formed body obtained above, a honeycomb structure can be obtained. As the drying method, there is no particular limitation, and conventionally known drying methods such as hot air drying, microwave drying, dielectric drying, reduced pressure drying, vacuum drying, and freeze drying can be used. Among them, in terms of being able to dry the entire honeycomb formed body quickly and uniformly, a drying method combining hot air drying and microwave drying or dielectric drying is preferred.

[0204] Next, in step B, a second plugging portion 41 is formed on the outflow end face 21 side of the second compartment 24 of the honeycomb structure obtained above. The formation method of each plugging portion is not particularly limited and can be carried out according to the conventional method. For example, when the second plugging portion 41 is composed of a resin sheet, the second plugging portion 41 can be formed by pasting a resin sheet on the outflow end face 21 of the second compartment 24. In addition, when the second plugging portion 41 is composed of ceramics, glass, etc., first, a thin film is pasted, and the thin film is formed with an opening at a portion corresponding to the second compartment 24 of the outflow end face 21 of the honeycomb structure where the second plugging portion 41 is to be formed. Next, the outflow end face 21 of the honeycomb structure is immersed in a paste-like plugging material (ceramics, glass, etc.), and the plugging material is allowed to enter the second compartment 24 of the honeycomb structure not blocked by the thin film, whereby the second plugging portion 41 can be formed.

[0205] Next, in step C, a functional material 50 is filled in the second compartment 24. The filling method is not particularly limited and can be carried out according to the conventional method.

[0206] Next, in step D, a first plugging portion 40 is formed on the inflow end face 20 side of the first compartment 23. The method of forming the first plugging portion 40 can be carried out in the same manner as the method of forming the second plugging portion 41 described above.

[0207] It should be noted that the order of steps A to D is not particularly limited except that step C is carried out after step B. For example, it can be carried out in the order of steps B, C, and D, the order of steps B, D, and C, or the order of steps D, B, and C.

[0208] <Gas recovery device>

[0209] The gas recovery device according to the embodiment of the present invention can be well used for recovering and releasing the gas to be captured contained in the processing gas.

[0210] Figure 16 It is a schematic diagram showing the configuration of the gas recovery device according to an embodiment of the present invention.

[0211] As Figure 16As shown, the gas recovery device 1000 includes: a reactor 1100; a gas supply pipe 1200 capable of supplying a processing gas or a purge gas to the inlet 1110 of the reactor 1100; and a gas discharge pipe 1300 capable of discharging the processing gas or the purge gas from the outlet 1120 of the reactor 1100. The reactor 1100 uses the above-mentioned reactor that can suppress an increase in pressure loss and increase the recovery amount of the gas to be captured by increasing the holding amount of the functional material 50. Therefore, the gas recovery device 1000 can also suppress an increase in pressure loss and increase the recovery amount of the gas to be captured.

[0212] The gas supply pipe 1200 has two branched gas supply branch pipes. The gas supply branch pipes can be a first gas supply branch pipe 1210 capable of supplying a processing gas and a second gas supply branch pipe 1220 capable of supplying a purge gas.

[0213] The gas discharge pipe 1300 has two branched gas discharge branch pipes. The gas discharge branch pipes can be a first gas discharge branch pipe 1310 capable of discharging a processing gas and a second gas discharge branch pipe 1320 capable of discharging a purge gas.

[0214] In addition, the gas recovery device 1000 further includes: a supply gas switching valve 1400 capable of shutting off the first gas supply branch pipe 1210 or the second gas supply branch pipe 1220, and a discharge gas switching valve 1500 capable of shutting off the first gas discharge branch pipe 1310 or the second gas discharge branch pipe 1320.

[0215] In the gas recovery device 1000 having the above structure, when recovering the gas to be captured contained in the processing gas, the supply gas switching valve 1400 is switched so as to shut off the second gas supply branch pipe 1220 and open the first gas supply branch pipe 1210, and the discharge gas switching valve 1500 is switched so as to shut off the second gas discharge branch pipe 1320 and open the first gas discharge branch pipe 1310. Next, the processing gas containing the gas to be captured is supplied from the first gas supply branch pipe 1210 to the inlet 1110 of the reactor 1100 via the gas supply pipe 1200. The processing gas supplied to the reactor 1100 has the gas to be captured recovered and is discharged from the outlet 1120. The discharged processing gas is discharged from the first gas discharge branch pipe 1310 via the gas discharge pipe 1300.

[0216] Next, when separating the gas to be captured recovered by the reactor 1100, the supply gas switching valve 1400 is switched so as to open the second gas supply branch pipe 1220 and cut off the first gas supply branch pipe 1210, and the discharge gas switching valve 1500 is switched so as to open the second gas discharge branch pipe 1320 and cut off the first gas discharge branch pipe 1310. Next, the purge gas is supplied from the second gas supply branch pipe 1220 to the inlet 1110 of the reactor 1100 via the gas supply pipe 1200. The purge gas supplied to the reactor 1100 is discharged from the outlet 1120 together with the gas to be captured captured by the functional material 50 of the reactor 1100. The purge gas containing the gas to be captured is discharged from the second gas discharge branch pipe 1320 via the gas discharge pipe 1300.

[0217] Here, in this specification, the "purge gas" means: a gas that can separate the gas to be captured captured by the functional material 50 of the reactor 1100 and discharge it from the reactor 1100. As the purge gas, it can be appropriately selected according to the type of the gas to be captured. For example, when the gas to be captured is carbon dioxide, water vapor or the like can be used. The water vapor is preferably at a high temperature of 100 °C or higher (for example, 120 °C).

[0218] In addition, in order to heat the purge gas to a specified temperature, the gas recovery device 1000 can further include a heating mechanism capable of heating the reactor 1100. By adopting such a configuration, it is possible to supply the purge gas at room temperature from the second gas supply branch pipe 1220 and heat the purge gas to the specified temperature in the reactor 1100. Therefore, it is not necessary to pre-heat the purge gas supplied to the gas recovery device 1000.

[0219] Figure 17 It is a schematic diagram showing the configuration of a gas recovery device according to another embodiment of the present invention.

[0220] As shown in Figure 17 the gas recovery device 2000 has the same basic structure as the Figure 16 gas recovery device 1000. That is, the gas recovery device 2000 includes: a reactor 1100; a gas supply pipe 1200 capable of supplying a processing gas or a purge gas to the inlet 1110 of the reactor 1100; and a gas discharge pipe 1300 capable of discharging the processing gas or the purge gas from the outlet 1120 of the reactor 1100. Therefore, the gas recovery device 2000 can also suppress an increase in pressure loss and increase the recovery amount of the gas to be captured.

[0221] The gas supply pipe 1200 has two independent gas supply pipes. The two independent gas supply pipes are a first gas supply pipe 2100 capable of supplying a process gas and a second gas supply pipe 2200 capable of supplying a purge gas.

[0222] The gas discharge pipe 1300 has two independent gas discharge pipes. The two independent gas discharge pipes are a first gas discharge pipe 2300 capable of discharging a process gas and a second gas discharge pipe 2400 capable of discharging a purge gas.

[0223] The reactor 1100 can be disposed between the first gas supply pipe 2100 and the first gas discharge pipe 2300 or between the second gas supply pipe 2200 and the second gas discharge pipe 2400.

[0224] The gas recovery device 2000 further includes a transfer mechanism (not shown) capable of transferring the reactor 1100 between the first gas supply pipe 2100 and the first gas discharge pipe 2300 or between the second gas supply pipe 2200 and the second gas discharge pipe 2400. As the transfer mechanism, there is no particular limitation, and a known transfer mechanism (for example, a transfer mechanism driven by a motor, etc.) can be used.

[0225] In the gas recovery device 2000 having the above-described structure, when recovering the gas to be captured contained in the process gas, the reactor 1100 is disposed between the first gas supply pipe 2100 and the first gas discharge pipe 2300 by the transfer mechanism. Next, the process gas containing the gas to be captured is supplied from the first gas supply pipe 2100 to the inlet 1110 of the reactor 1100. The process gas supplied to the reactor 1100 has the gas to be captured recovered and is discharged from the outlet 1120. The discharged process gas is discharged from the first gas discharge pipe 2300.

[0226] Next, when detaching the gas to be captured recovered by the reactor 1100, the reactor 1100 is disposed between the second gas supply pipe 2200 and the second gas discharge pipe 2400 by the transfer mechanism. Next, the purge gas is supplied from the second gas supply pipe 2200 to the inlet 1110 of the reactor 1100. The purge gas supplied to the reactor 1100 and the gas to be captured captured by the functional material 50 of the reactor 1100 are discharged together from the outlet 1120. The purge gas containing the gas to be captured is discharged from the second gas discharge pipe 2400. It should be noted that the same purge gas as described above can be used as the purge gas.

[0227] In addition, in order to heat the purge gas to a specified temperature, the gas recovery device 2000 may further include a heating mechanism capable of heating the reactor 1100 disposed between the second gas supply pipe 2200 and the second gas discharge pipe 2400. By adopting such a configuration, it is possible to supply the purge gas at room temperature from the second gas supply pipe 2200 and heat the purge gas to the specified temperature in the reactor 1100. Therefore, it is not necessary to pre-heat the purge gas supplied to the gas recovery device 2000.

[0228] <Gas Recovery System>

[0229] The gas recovery system according to the embodiment of the present invention can be well used for recovering and releasing the gas to be captured contained in the process gas.

[0230] Figure 18 It is a schematic diagram showing the configuration of the gas recovery system according to an embodiment of the present invention.

[0231] As Figure 18 shown, the gas recovery system 3000 includes: a gas recovery device 3100, a gas release device 3200, and a transfer device 3300.

[0232] The gas recovery device 3100 includes: a loading and unloading unit 3110 capable of loading and unloading the reactor 1100; a gas supply pipe 1200 capable of supplying a process gas to the inlet 1110 of the reactor 1100; and a gas discharge pipe 1300 capable of discharging the process gas from the outlet 1120 of the reactor 1100.

[0233] The gas release device 3200 includes: a loading and unloading unit 3210 capable of loading and unloading the reactor 1100; a gas supply pipe 1200 capable of supplying a purge gas to the inlet 1110 of the reactor 1100; and a gas discharge pipe 1300 capable of discharging the purge gas from the outlet 1120 of the reactor 1100.

[0234] The transfer device 3300 can transfer the reactor 1100 that has recovered the gas to be captured in the gas recovery device 3100 to the gas release device 3200, and can transfer the reactor 1100 that has released the gas to be captured in the gas release device 3200 to the gas recovery device 3100.

[0235] In the gas recovery system 3000 having the structure as described above, when recovering the gas to be captured contained in the process gas, the reactor 1100 is arranged at the loading and unloading section 3110 of the gas recovery device 3100 by the transfer device 3300. Next, the process gas containing the gas to be captured is supplied from the gas supply pipe 1200 of the gas recovery device 3100 to the inlet 1110 of the reactor 1100. The process gas supplied to the reactor 1100 has the gas to be captured recovered and is discharged from the outlet 1120. The discharged process gas is discharged from the gas discharge pipe 1300.

[0236] Next, when separating the gas to be captured recovered by the reactor 1100, the reactor 1100 arranged in the gas recovery device 3100 is moved to the loading and unloading section 3210 of the gas release device 3200 by the transfer device 3300. Next, the purge gas is supplied from the gas supply pipe 1200 of the gas release device 3200 to the inlet 1110 of the reactor 1100. The purge gas supplied to the reactor 1100 is discharged from the outlet 1120 together with the gas to be captured captured by the functional material 50 of the reactor 1100. The purge gas containing the gas to be captured is discharged from the gas discharge pipe 1300. It should be noted that the same purge gas as described above can be used as the purge gas.

[0237] In addition, in order to heat the purge gas to a specified temperature, the gas release device 3200 may further include a heating mechanism capable of heating the reactor 1100. By adopting such a configuration, it is possible to supply the purge gas at room temperature from the gas supply pipe 1200 and heat the purge gas to the specified temperature inside the reactor 1100. Therefore, it is not necessary to pre-heat the purge gas supplied to the gas release device 3200.

[0238] The transfer device 3300 is not particularly limited and may include a vehicle. By adopting such a configuration, even when the gas recovery device 3100 and the gas release device 3200 are in separated locations, the reactor 1100 can be efficiently transported.

[0239] Symbol Explanation

[0240] 10 Outer peripheral wall

[0241] 20 Inflow end face

[0242] 21 Outflow end face

[0243] 23 First compartment

[0244] 24 Second compartment

[0245] 30 Partition wall

[0246] 40 First sealing portion

[0247] 41 Second Sealing Part

[0248] 50 Functional Material

[0249] 1000, 2000 Gas Recovery Device

[0250] 1100 Reactor

[0251] 1110 Inlet

[0252] 1120 Outlet

[0253] 1200 Gas Supply Pipe

[0254] 1210 First Gas Supply Branch Pipe

[0255] 1220 Second Gas Supply Branch Pipe

[0256] 1300 Gas Discharge Pipe

[0257] 1310 First Gas Discharge Branch Pipe

[0258] 1320 Second Gas Discharge Branch Pipe

[0259] 1400 Supply Gas Switching Valve

[0260] 1500 Discharge Gas Switching Valve

[0261] 2100 First Gas Supply Pipe

[0262] 2200 Second Gas Supply Pipe

[0263] 2300 First Gas Discharge Pipe

[0264] 2400 Second Gas Discharge Pipe

[0265] 3000 Gas Recovery System

[0266] 3100 Gas Recovery Device

[0267] 3110 Loading and Unloading Part

[0268] 3200 Gas Release Device

[0269] 3210 Loading and Unloading Part

[0270] 3300 Transfer Device

Claims

1. A reactor, characterized in that, It includes a honeycomb structure body and a granular functional material. The honeycomb structure body has: an outer peripheral wall; and a porous partition wall disposed inside the outer peripheral wall and partitioning to form a first compartment and a second compartment that extend from an inflow end face to an outflow end face and through which a processing gas containing a gas to be captured can flow. The first compartment and the second compartment are adjacent to each other with the partition wall therebetween. The functional material is filled in the second compartment.

2. The reactor according to claim 1, wherein it further includes a second sealing portion provided on the inflow end face side and / or the outflow end face side of the second compartment.

3. The reactor according to claim 2, wherein the second sealing portion is provided on the outflow end face side of the second compartment, and the second sealing portion is dense or porous.

4. The reactor according to claim 3, wherein it further includes a first sealing portion provided in the first compartment on the inflow end face side.

5. The reactor according to claim 2, wherein the second sealing portion is provided on the inflow end face side of the second compartment, and the second sealing portion is dense or porous.

6. The reactor according to claim 5, wherein it further includes a first sealing portion provided in the first compartment on the outflow end face side.

7. The reactor according to claim 2, wherein the second sealing portion is provided on the inflow end face side and the outflow end face side of the second compartment, the second sealing portion on the inflow end face side is dense, and the second sealing portion on the outflow end face side is dense or porous.

8. The reactor according to claim 4 or 6, wherein the first sealing portion is dense.

9. The reactor according to any one of claims 1 to 7, wherein in a cross section orthogonal to the extending direction of the first compartment and the second compartment, the shapes of the first compartment and the second compartment are triangular, quadrilateral, hexagonal, octagonal, or a combination thereof.

10. The reactor according to any one of claims 1 to 7, wherein the outer peripheral wall and the partition wall are mainly composed of one or more selected from cordierite, mullite, alumina, silicon carbide, and Si-bonded silicon carbide.

11. The reactor according to any one of claims 1 to 7, wherein the thickness of the partition wall is 0.05 mm to 5 mm.

12. The reactor according to any one of claims 1 to 7, wherein the porosity of the partition wall is 30% or more and less than 80%.

13. The reactor according to any one of claims 1 to 7, wherein the average pore diameter of the partition wall is 10 μm to 300 μm.

14. The reactor according to any one of claims 1 to 7, wherein the functional material is an adsorption material.

15. The reactor according to claim 14, wherein The adsorbent material is at least one selected from amine compounds, organometallic complexes, and nanoporous ceramics or mesoporous silica supporting the amine compound and / or the organometallic complex.

16. The reactor according to any one of claims 1 to 7, characterized in that in the direction in which the second compartment extends, the particle size of the particulate functional material is smaller on the outflow end face side than at the central part.

17. The reactor according to any one of claims 1 to 7, characterized in that in the direction orthogonal to the direction in which the second compartment extends, the particle size of the particulate functional material is larger on the outer peripheral wall side than at the central part.

18. The reactor according to any one of claims 1 to 7, characterized in that the first compartment is arranged at a position facing the outer peripheral wall.

19. The reactor according to any one of claims 2 to 7, characterized in that the second sealing portion is made of resin.

20. The reactor according to claim 4 or 6, characterized in that the first sealing portion is made of resin.

21. The reactor according to any one of claims 1 to 7, characterized in that the honeycomb structure has a quadrangular prism shape in which the length of one side of the inflow end face and the outflow end face is 100 to 500 mm, and the length in the direction in which the first compartment and the second compartment extend is 100 to 1000 mm.

22. A gas recovery device for recovering and releasing a gas to be captured contained in a processing gas, the gas recovery device is characterized by comprising: the reactor according to any one of claims 1 to 7; a gas supply pipe that can supply the processing gas or a purge gas to the inlet of the reactor; and a gas discharge pipe that can discharge the processing gas or the purge gas from the outlet of the reactor.

23. The gas recovery device according to claim 22, characterized in that the gas supply pipe has two branched gas supply branch pipes, and the gas supply branch pipes are a first gas supply branch pipe capable of supplying the processing gas and a second gas supply branch pipe capable of supplying the purge gas, the gas discharge pipe has two branched gas discharge branch pipes, and the gas discharge branch pipes are a first gas discharge branch pipe capable of discharging the processing gas and a second gas discharge branch pipe capable of discharging the purge gas, the gas recovery device further comprises: a supply gas switching valve capable of shutting off the first gas supply branch pipe or the second gas supply branch pipe, and a discharge gas switching valve capable of shutting off the first gas discharge branch pipe or the second gas discharge branch pipe.

24. The gas recovery device according to claim 22, characterized in that the gas supply pipe has two independent gas supply pipes, and the gas supply pipes are a first gas supply pipe capable of supplying the processing gas and a second gas supply pipe capable of supplying the purge gas, The gas discharge pipe has two independent gas discharge pipes, namely a first gas discharge pipe capable of discharging the processing gas and a second gas discharge pipe capable of discharging the purge gas. The reactor can be disposed between the first gas supply pipe and the first gas discharge pipe or between the second gas supply pipe and the second gas discharge pipe. The gas recovery device further includes a transfer mechanism capable of transferring the reactor between the first gas supply pipe and the first gas discharge pipe or between the second gas supply pipe and the second gas discharge pipe.

25. The gas recovery device according to claim 22, wherein: The gas recovery device further includes a heating mechanism capable of heating the reactor.

26. A gas recovery system for recovering and releasing a gas to be captured contained in a processing gas. The gas recovery system is characterized by comprising: A gas recovery device having a loading and unloading portion capable of loading and unloading the reactor according to any one of claims 1 to 7, a gas supply pipe capable of supplying the processing gas to the inlet of the reactor, and a gas discharge pipe capable of discharging the processing gas from the outlet of the reactor; A gas release device having a loading and unloading portion capable of loading and unloading the reactor, a gas supply pipe capable of supplying the purge gas to the inlet of the reactor, and a gas discharge pipe capable of discharging the purge gas from the outlet of the reactor; And A transfer device capable of transferring the reactor that has recovered the gas to be captured in the gas recovery device to the gas release device, and transferring the reactor that has released the gas to be captured in the gas release device to the gas recovery device.

27. The gas recovery system according to claim 26, wherein: The transfer device includes a vehicle.

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