Chemical regenerative reactor

Abstract

The objective of this invention is to provide a chemical regenerative reactor in which the flow path through which the reactant gas passes is not easily flattened. To solve the above-mentioned problem, a chemical regenerative reactor is provided, characterized by comprising: a container; a chemical regenerative material housed inside the container; and a reactant gas supply body housed inside the container, which guides the reactant gas used for the reaction of the chemical regenerative material to the chemical regenerative material. The reactant gas supply body is composed of a porous body or a frame filled with a flattening inhibition component.

Description

Technical Field

[0001] This invention relates to a chemical regenerative reactor in a chemical regenerative reaction apparatus. Background Technology

[0002] From the perspective of effectively utilizing the heat dissipation (waste heat) from heat sources that generate heat during operation (such as drive mechanisms like engines, and equipment that performs combustion processes in factories, such as waste incineration facilities), research and development are being conducted on chemical heat storage, which utilizes chemical reactions to store and dissipate heat, thereby enabling the preservation of thermal energy at room temperature.

[0003] Chemical regenerative reaction devices used for chemical regenerative processes typically employ solid chemical regenerative materials and are configured to accumulate heat generated by the endothermic reaction during the separation of generated gases by applying heat to the chemical regenerative material, while simultaneously dissipating heat to the outside of the chemical regenerative reaction device by causing the chemical regenerative material to undergo an exothermic reaction with the reaction gases.

[0004] As an example of such a chemical regenerative reaction device, the chemical regenerative reactor described in Patent Document 1 can be cited. Patent Document 1 describes that the steam flow path is created simply by bending the sheet into a rectangular corrugated shape (concave and convex), and the flow path is flattened because the chemical regenerative material expands through a hydration reaction and contracts through a dehydration reaction.

[0005] Previous technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2014-115060 Summary of the Invention

[0008] The technical problem to be solved by the invention

[0009] Therefore, Patent Document 1 describes the following: In a chemical regenerative reactor, along the arrangement direction of the chemical regenerative material (Patent Document 1), Figure 1 A pressing portion extending in the Y direction is bent and continuously disposed at both ends of a plate bent into a rectangular corrugated shape, and this pressing portion is configured to be sandwiched between the wall of the reaction vessel and the chemical heat storage material. In this state, if the chemical heat storage material expands, the pressing portion is pressed against the wall, thus suppressing the movement of the pressing portion. This suppresses the two ends of the plate bent into a rectangular corrugated shape from moving closer to each other (as described in Patent Document 1). Figure 1 The Z-direction movement prevents the portion bent into a rectangular wave shape from being flattened.

[0010] However, even a structure like that in Patent Document 1, which is simply a matter of bending the sheet metal, may not be able to ensure sufficient strength in the flow path for steam. Therefore, a different structure is required to prevent flattening.

[0011] Therefore, the objective of this invention is to provide a chemical regenerative reactor in which the flow path through which the reactant gas passes is not easily flattened.

[0012] means for solving technical problems

[0013] The inventors conducted in-depth research on the above-mentioned issues and found that, in a chemical regenerative reactor, by constructing a frame consisting of a porous body or filled with a flattening inhibition component, the reaction gas used for the reaction of the chemical regenerative material is guided to the reaction gas supply body of the chemical regenerative material. The reaction gas supply body is not easily flattened, and the reaction gas is easily guided to the entire chemical regenerative material, thus completing the present invention.

[0014] That is, the present invention is a chemical regenerative reactor as follows.

[0015] The chemical regenerative reactor of the present invention, which is used to solve the above-mentioned problems, is characterized by comprising: a container; a chemical regenerative material contained inside the container; and a reaction gas supply body contained inside the container, which guides the reaction gas for the reaction of the chemical regenerative material to the chemical regenerative material. The reaction gas supply body is composed of a porous body or a frame filled with a flattening inhibition member inside.

[0016] According to this chemical regenerative reactor, the following effect is achieved: the flattening suppression member set on the reactant gas supply body suppresses the flattening of the reactant gas supply body, thereby facilitating the supply of reactant gas into the chemical regenerative material as a whole.

[0017] Furthermore, as one embodiment of the chemical regenerative reactor of the present invention, the porous body is characterized by being plate-shaped.

[0018] Based on this characteristic, by setting the porous body to a plate shape, the following effects are achieved: the volume of the reactant gas supply body can be reduced, thereby reducing the proportion of the volume in the container, thus enabling the storage of a large amount of chemical heat storage material.

[0019] Moreover, it also has the following effects: the contact area between the plate and the chemical heat storage material increases, and heat can be effectively transferred from the plate surface of the plate to the downstream (inner) side of the chemical heat storage material, thereby improving the reaction rate of the downstream chemical heat storage material.

[0020] Furthermore, as one embodiment of the chemical regenerative reactor of the present invention, the plate-shaped body is characterized by having two or more plate-shaped components, each plate-shaped component having a plurality of through holes extending along the thickness direction, and the plate-shaped components being stacked together in a staggered manner such that a portion of the through holes of one plate-shaped component and a portion of the through holes of another plate-shaped component overlap each other.

[0021] According to this feature, since two or more plate-shaped parts are stacked together in a staggered manner with a portion of the through hole of one plate-shaped part and a portion of the through hole of the other plate-shaped part overlapping each other, the manufacturing of the plate-shaped parts becomes simple.

[0022] Furthermore, as one embodiment of the chemical regenerative reactor of the present invention, the reactant gas supply is characterized by being formed by arranging a plurality of plate-shaped bodies in a cross configuration.

[0023] Based on this feature, since the plates are arranged in a cross configuration, the following effects are achieved: the contact area between the plate and the chemical heat storage material can be increased, and heat can be applied to the chemical heat storage material from the contact surface via the plate heated by the reaction gas, thereby increasing the reaction rate of the chemical heat storage material.

[0024] Invention Effects

[0025] According to the present invention, a chemical regenerative reactor in which the reactant gas supply is not easily crushed can be provided. Attached Figure Description

[0026] Figure 1 This is a schematic diagram illustrating the structure of the chemical heat storage device according to the first embodiment of the present invention.

[0027] Figure 2 This is a schematic top view illustrating the interior of the chemical regenerative reactor of the chemical regenerative apparatus according to the first embodiment of the present invention.

[0028] Figure 3 (A) is along Figure 2 A sectional view cut along line AA. Figure 3 (B) is a magnified view of (A).

[0029] Figure 4 This is a schematic top view illustrating the interior of the chemical regenerative reactor in a modified example of the chemical regenerative apparatus according to the first embodiment of the present invention.

[0030] Figure 5 This is a schematic top view illustrating the interior of the chemical regenerative reactor of the chemical regenerative apparatus according to the second embodiment of the present invention.

[0031] Figure 6This is a schematic diagram of a reaction gas supply body according to the second embodiment of the present invention, wherein (A) is a schematic diagram of a plate-shaped member on one side before being stacked into a plate-shaped body, (B) is a schematic diagram of a plate-shaped member on the other side before being stacked into a plate-shaped body, and (C) is a schematic diagram of a plate-shaped body after the plate-shaped members on one side and the plate-shaped members on the other side are stacked.

[0032] Figure 7 It means along Figure 6 A schematic diagram of a portion of the chemical thermal storage material and plate-like body in a cross-section cut along line BB in the middle (C).

[0033] Figure 8 It means along Figure 6 A schematic diagram of a portion of the chemical thermal storage material and plate-like body in a cross-section cut along line C (C).

[0034] Figure 9 This is a schematic top view illustrating the interior of the chemical thermal storage reactor of the chemical thermal storage device according to the third embodiment of the present invention.

[0035] Figure 10 This is a schematic top view illustrating the interior of the chemical regenerative reactor of a modified chemical regenerative apparatus according to the second embodiment of the present invention.

[0036] Figure 11 It means along Figure 10 A schematic diagram of a portion of the chemical thermal storage material and plate-like body in a cross-section cut along the DD line.

[0037] Figure 12 This is a schematic top view illustrating the interior of the chemical regenerative reactor in a modified example of the chemical regenerative apparatus according to the third embodiment of the present invention. Detailed Implementation

[0038] The chemical heat storage device and method of the present invention are configured to store waste heat from heat sources that generate heat during operation (e.g., drive mechanisms such as engines, and equipment that performs combustion processes such as waste incineration plants) in a chemical heat storage material, and to utilize the heat by dissipating heat from the stored product when heat is needed. Furthermore, the chemical heat storage device of the present invention can be used as a heat supply source when fixed in a predetermined location, or it can be configured as a portable device and transported to a location where heat is needed.

[0039] Furthermore, in the chemical heat storage device and the heat storage method of the chemical heat storage material of the present invention, the chemical heat storage material is heated during heat storage to separate it into heat storage products and generated gases, and during heat dissipation, the heat storage products react with the reaction gases to generate chemical heat storage material. Here, the generated gases generated during heat storage and the reaction gases supplied during heat dissipation are preferably of the same kind. Moreover, by condensing the generated gases and recovering them as reaction liquids in a liquefaction process and evaporating the reaction liquids obtained in the liquefaction process and using them as reaction gases in a vaporization process, the reaction related to chemical heat storage can be carried out, making heat storage and heat dissipation of the chemical heat storage material possible. In addition, the generated gases and reaction gases are sometimes referred to as "reaction media" below.

[0040] As a general reaction related to chemical heat storage in this invention, a reaction such as that shown in formula (1) can be exemplified.

[0041] [Formula 1]

[0042] AB(s)+QA(s)+B(g)…(1)

[0043] If heat Q is applied to a solid chemical heat storage material AB, a solid heat storage product A and a gaseous reaction medium B are generated, and heat storage can be achieved through this endothermic reaction. This reaction is a reversible equilibrium reaction, so the heat storage product A reacts with the reaction medium B during heat dissipation. Furthermore, "(s)" in the formula represents the solid state, and "(g)" represents the gaseous state.

[0044] In conventional chemical regenerative devices, during heat storage, the reaction medium B (generated gas), generated by applying heat Q to the chemical regenerative material AB within the reactor, is introduced into an evaporator-condenser. The evaporator-condenser dissipates heat, causing the temperature of the reaction medium B (generated gas) to drop. Through a condensation reaction, the reaction medium B (generated gas) liquefies and is recovered as the reaction liquid. At this time, all the recovered reaction liquid accumulates in the evaporator-condenser; therefore, the container constituting the evaporator-condenser needs a certain amount of space to store the reaction liquid. Consequently, due to the sensible heat of the container itself, the energy consumption required to lower the temperature of the reaction medium B (generated gas) increases.

[0045] Furthermore, during heat dissipation, a reaction occurs in the opposite direction to that during heat storage. Specifically, on the evaporator-condenser side, heat is applied to the reaction liquid to vaporize it into reaction medium B (reaction gas). On the reactor side, heat is dissipated through a heat-generating reaction between reaction medium B (reaction gas) and heat storage product A to produce chemical heat storage material AB. At this time, all the reaction liquid within the evaporator-condenser needs to be heated; therefore, to generate the required amount of reaction gas for the heat-generating reaction on the reactor side, a certain amount of energy is required.

[0046] In contrast, in the chemical heat storage device and method for chemical heat storage materials of the present invention, when performing heat storage or heat dissipation based on the reaction of formula (1), the reaction liquid used in the reaction of chemical heat storage material AB is stored separately from the parts where heat exchange occurs, such as condensation or evaporation. Therefore, in the liquefaction process where the generated gas is condensed and recovered as the reaction liquid, and in the vaporization process where the reaction liquid obtained in the liquefaction process is evaporated and used as the reaction gas, heat storage and heat dissipation related to chemical heat storage can be performed without consuming the necessary energy. As a result, compared with conventional chemical heat storage devices, energy loss can be suppressed, and reactions related to chemical heat storage can be performed smoothly.

[0047] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0048] In this invention, by applying a porous body or a frame consisting of a flattening inhibition component to the reactive gas supply body, even if pressure (flattening pressure) is generated that would cause the reactive gas supply body to be flattened due to repeated expansion and contraction caused by the reaction of the chemical heat storage material, the flow path through which the reactive gas passes is not easily flattened, and the reactive gas is easily guided to the entire chemical heat storage material.

[0049] As a porous body, a component with multiple holes in an internally blocked object is equivalent to this. For example, a honeycomb-like structure of metal with a large number of small spaces (bubbles) and a continuous bubble body (i.e., foam metal) formed by these bubbles communicating with each other, or a component with multiple through holes running through the thickness of the plate and multiple plate-like components stacked in such a way that the through holes are staggered from each other is equivalent to a porous body.

[0050] Furthermore, as a component consisting of a frame filled with a flattening suppression component, an example can be an object that ensures the flow path (space through which the reactant gas passes) and can withstand flattening pressure, with the flattening suppression component filled inside the frame. Specifically, in addition to using inorganic materials such as metal, gravel, or ceramics as the flattening suppression component, PCM capsules that exert latent heat storage can also be used as the flattening suppression component.

[0051] PCM capsules are capsules made by sealing a latent heat storage material (PCM stands for Phase Change Material) inside a metal capsule. Heat is absorbed and released through repeated melting and solidification of the latent heat storage material. Regarding PCM capsules, if the temperature reaches a high level, the latent heat storage material inside will melt and become liquid. However, because the outer metal capsule remains solid, the latent heat storage material will not leak, and even under crushing pressure, the flow path of the reacting gases can be ensured.

[0052] In addition, the frame can be exemplified as a cylindrical or angular frame, but it is not particularly limited as long as it can ensure that it serves as a space for supplying reactive gases to the chemical thermal storage material.

[0053] Furthermore, the chemical heat storage device and the heat storage method of the chemical heat storage material described in the embodiments are merely examples to illustrate the heat storage device and the heat storage method of the chemical heat storage material involved in the present invention, and are not limited to these as long as they achieve the same effect.

[0054] [First Embodiment]

[0055] [Chemical thermal storage device]

[0056] Figure 1 This is a schematic diagram illustrating the structure of the chemical heat storage device 1a according to the first embodiment of the present invention. The chemical heat storage device 1a includes a chemical heat storage reactor 2a that holds the chemical heat storage material 4 and a condenser 3 that condenses and stores the generated gas produced from the chemical heat storage material 4 as the reaction medium 9. The interiors of the chemical heat storage reactor 2a and the condenser 3 are airtightly connected together via a connecting portion 7. A heat exchange pipe 5 for the passage of a heat medium such as waste gas is provided inside the chemical heat storage reactor 2a. Furthermore, the connecting portion 7 is connected to the opening 6 of the chemical heat storage reactor 2a. A valve 10 is provided in the connecting portion 7 to control the movement of the generated gas between the chemical heat storage reactor 2a and the condenser 3.

[0057] (Condenser)

[0058] The condenser 3 is a structure used to condense the gaseous reaction medium 9 generated from the chemical heat storage material 4 into a liquid state and store it. The condenser 3 and the chemical heat storage reactor 2a are connected together via a connecting part 7. The condenser 3 is adjusted to a temperature that condenses the gaseous reaction medium 9. If the gaseous reaction medium 9 flows into the condenser 3, it condenses into a liquid state. The temperature adjustment of the condenser 3 is not particularly limited; it can be cooled using a cooling device or by natural heat dissipation.

[0059] (Chemical regenerative reactor)

[0060] refer to Figure 2 and Figure 3 The chemical regenerative reactor 2a will be described. Additionally, in... Figure 2 and Figure 3 The heat exchange piping 5 is not shown in the diagram. The chemical regenerative reactor 2a includes a container 21, a reaction gas supply 22a, a chemical regenerative material 4, and heat exchange piping 5.

[0061] <Container>

[0062] Container 21 is a structure for holding chemical heat storage material 4, and it is composed of a sealable structure.

[0063] The shape and material of container 21 are not particularly limited, but it is preferably pressure-resistant. By making container 21 pressure-resistant, changes in the internal volume of container 21 caused by changes in internal pressure can be suppressed, thus making it easy to control the internal pressure. The shape and material of container 21 are not particularly limited. Container 21 has an opening 6 for the flow of reaction medium 9 that has separated from chemical heat storage material 4, and the opening 6 is connected to the connecting part 7.

[0064] <Reactant Gas Supplier>

[0065] The reaction gas supply 22a is housed inside the container 21. It is a component used to guide the reaction medium 9 (i.e., reaction gas 8) supplied from the connecting part 7 to the inner side (downstream side of the reaction gas supply 22a) opposite to the side of the opening 6 (upstream side of the reaction gas supply 22a). That is, the reaction gas supply 22a is a component used to guide the reaction gas 8 to the entire range of the chemical heat storage material 4 from the upstream side to the downstream side. It can be a porous body or a component composed of a frame filled with a flattening suppression component 27 inside.

[0066] In addition, as a porous body, a honeycomb structure of metal with a large number of small spaces can be used, and a continuous bubble body (called foam metal) can be formed by interconnecting the bubbles.

[0067] Figure 3 The reaction gas supply unit 22a shown in this embodiment is a component consisting of a frame filled with a flattening suppression member 27. The reaction gas supply unit 22a includes an internal space 23, a wall component 24, and a flattening suppression member 27.

[0068] In addition, the frame may be exemplified as a cylindrical or angular frame, but it is not particularly limited as long as it can ensure that it serves as a space for supplying the reactive gas 8 to the chemical heat storage material 4.

[0069] Wall components

[0070] The wall member 24 is configured to surround the internal space 23 of the frame, thereby ensuring that the internal space 23 allows the reactant gas 8 to pass through. The wall member 24 has a gas supply section 26 for guiding the reactant gas 8 from the internal space 23 to the chemical heat storage material 4. The gas supply section 26 is a through hole, and multiple of them are individually provided in the wall member 24. The gas supply section 26 is provided over the entire range of the wall member 24 from the opening 6 side (upstream side) to the inner side (downstream side).

[0071] Flattening suppression component

[0072] The flattening suppression component 27 functions as follows: it prevents the frame from being flattened towards the internal space 23 by the flattening pressure 29, wherein the flattening pressure 29 is generated by the repeated expansion and contraction of the chemical heat storage material 4 based on the reaction.

[0073] The flattening suppression component 27 is an object that fills the interior of the frame (i.e., the interior space 23). The surface of the flattening suppression component 27 has irregularities, and the flattening suppression component 27 can be made of a material capable of withstanding the flattening pressure 29 generated by the repeated expansion and contraction of the chemical heat storage material 4. The gaps between the multiple flattening suppression components 27 form flow paths, and the reaction gas 8 bends along the flow paths (the gaps between the flattening suppression components 27) and reacts with the chemical heat storage material 4 after passing through the gas supply section 26 from the interior space 23.

[0074] In this embodiment, a case is illustrated where multiple flattening suppression components 27 are filled internally. However, the flattening suppression components 27 are not particularly limited as long as they can ensure the passage of the reactive gas 8 and are made of a material, object, or structure capable of withstanding the flattening pressure 29 generated by the repeated expansion and contraction of the chemical heat storage material 4. For example, in addition to inorganic materials such as metal, gravel, or ceramic, the flattening suppression components 27 can also be PCM capsules that play a role in latent heat storage.

[0075] Furthermore, the flattening suppression component 27 is preferably sized to prevent it from entering the through hole of the gas supply section 26 and blocking the through hole.

[0076] If the chemical heat storage material 4 and the reactive gas 8 react repeatedly to dissipate and store heat, the volume of the chemical heat storage material 4 will repeatedly expand and contract. As a result, the pressure on the downstream (inner) side of the reactive gas supply body 22a will increase, resulting in a pressure in the flattening direction (flattening pressure 29) applied to the reactive gas supply body 22a. If the downstream (inner) side of the reactive gas supply body 22a is flattened, the reactive gas 8 will be difficult to be introduced to the downstream (inner) side, and the chemical heat storage material 4 on the downstream side may be unable to react.

[0077] In this invention, when the flattening pressure 29 is generated, the flattening inhibition members 27 come into contact with each other and support each other, thereby making it difficult for the wall members 24 of the reactant gas supply body 22a to be flattened and block the flow path through which the reactant gas 8 passes. Therefore, even when the flattening pressure 29 is generated, the durability of the reactant gas supply body 22a can be improved, thus easily ensuring the flow path and having the effect of easily guiding the reactant gas 8 to the inner (downstream) side of the gas supply section 26.

[0078] Furthermore, in order to prevent the chemical heat storage material 4 from entering the through hole of the gas supply section 26 and thus blocking the through hole, the reaction gas supply body 22a can be placed in a container or bag made of a metal screen, or the screen-shaped component can be placed between the reaction gas supply body 22a and the chemical heat storage material 4.

[0079] <Chemical thermal storage materials>

[0080] Chemical heat storage material 4 is a chemical substance that, upon heating, separates into heat storage products and a generated gas, and releases heat through the opposite reaction. Examples of heat storage products and generated gases include calcium oxide (CaO) and water vapor (H2O), calcium chloride (CaCl2) and water vapor (H2O), calcium bromide (CaBr2) and water vapor (H2O), calcium iodide (CaI2) and water vapor (H2O), magnesium oxide (MgO) and water vapor (H2O), magnesium chloride (MgCl2) and water vapor (H2O), zinc chloride (ZnCl2) and water vapor (H2O), strontium chloride (SrCl2) and ammonia (NH3), and strontium bromide (SrBr2) and ammonia (NH3). From the viewpoint of ease of heat dissipation, water vapor is preferably used as both the generated gas and the reactant gas in chemical heat storage material 4.

[0081] The structure and shape of the chemical heat storage material 4 are not particularly limited, and can be in the form of powder, granules, pellets, pellets, flakes, etc. Furthermore, a molded body obtained by shaping powder or a material formed by supporting the chemical heat storage material 4 in a porous body can also be used. From the viewpoint of increasing surface area to improve reactivity, a powder form is preferred.

[0082] Furthermore, the chemical heat storage material 4 can also be a cartridge made by filling a container or bag made of a metal sieve with powdered chemical heat storage material 4. By using a cartridge, it is possible to prevent the powdered chemical heat storage material 4 from flowing out of the reactor 2, and to prevent the chemical heat storage material 4 from shifting inside the reactor 2. In addition, by using a cartridge, the replacement of the chemical heat storage material 4 becomes easy, and it also has excellent operability.

[0083] <Heat exchange piping>

[0084] The chemical regenerative reactor 2a has heat exchange piping 5 for transferring heat between the chemical regenerative material 4 contained inside and the outside. The heat exchange piping 5 can be of any shape as long as it can transfer heat between the chemical regenerative material 4 contained inside the chemical regenerative reactor 2a and the outside, for example, it can be composed of heat exchange tubes that are tortuously arranged inside the chemical regenerative reactor 2a or the inner cylinder of a double-cylinder reactor.

[0085] [The role of the reactant gas supplier in a chemical regenerative reactor]

[0086] according to Figure 3 Section (A) describes the movement of the reactive gas 8 and the reaction of the chemical thermal storage material 4 in the chemical thermal storage reactor 2a of this embodiment.

[0087] By opening the valve 10 provided in the connecting part 7, the chemical regenerative reactor 2a and the condenser 3 are connected into a space. The reaction gas 8, which passes through the outside of the chemical regenerative reactor 2a (i.e., the connecting part 7 and the opening 6), is guided from the opening 6 side (upstream side) of the reaction gas supply body 22a to the internal space 23.

[0088] The reactant gas 8 in the internal space 23 moves from the upstream side to the downstream side of the internal space 23 and reacts with the chemical heat storage material 4 after passing through the gas supply sections 26 located on both sides of the internal space 23. The reactant gas 8 that does not react with the chemical heat storage material 4 is guided to the flattening suppression member 27 located inside the gas supply section 26 and collides with its surface. The reactant gas 8 that collides with the flattening suppression member 27 changes direction toward the chemical heat storage material 4. Then, the reactant gas 8 that changes direction is either reacting with the chemical heat storage material 4 after passing through the gas supply section 26 (reactant gas 8a), or continuing to flow through the downstream path (reactant gas 8b) and colliding with the surface of the flattening suppression member 27 on the downstream side to change direction.

[0089] As described above, the chemical heat storage material 4 and the reactive gas 8 can react easily and uniformly throughout the entire range from the upstream side to the downstream side. The chemical heat storage material 4 and the reactive gas 8 react to become a heat dissipation state, and the heat is output to the outside through the heat exchange pipe 5, thereby utilizing the heat.

[0090] Then, if heat is supplied from the heat exchange pipe 5 and applied to the chemical heat storage material 4, a reaction occurs in which the reactive gas 8 moves toward the condenser 3. In this state, by closing the valve 10 of the connecting part 7, the chemical heat storage device 1a enters the heat storage state.

[0091] As described above, if heat dissipation and heat storage are repeated, the chemical heat storage material 4 will shift in the direction of gravity, thereby generating a flattening pressure 29 on the wall component 24 of the reactant gas supply body 22a. Even under this flattening pressure 29, since the wall component 24 is supported by the flattening suppression component 27 to prevent it from being flattened and to ensure the flow path of the reactant gas 8, the durability of the reactant gas supply body 22a can be improved, and the state in which the chemical heat storage material 4 and the reactant gas 8 can easily and uniformly react throughout the entire range from the upstream side to the downstream side can be maintained for a long time.

[0092] In this embodiment, a frame filled with a flattening suppression component is illustrated, but a porous body (i.e., a continuous bubble body formed by interconnected bubbles, i.e., foam metal) can also be used. Figure 4 The example shown uses cylindrical foam metal, but its shape is not limited. The portion formed by the interconnected bubbles of the foam metal acts as a flow path for the reactant gas 8, thereby supplying the reactant gas 8 to the chemical heat storage material 4. Furthermore, the openings of the foam metal opposite to the chemical heat storage material 4 (the openings on the surface of the foam metal) act as the gas supply section 26. Since the foam metal is an object with multiple holes on an internally blocked object, it is not easily flattened even when flattening pressure 29 is generated due to the presence of the internally blocked object portion.

[0093] [Second Implementation]

[0094] Figure 5 This is a schematic top view illustrating the structure of the chemical thermal storage reactor 2b of the chemical thermal storage device 1b according to the second embodiment of the present invention. Additionally, Figure 5 The heat exchange piping 5 is not shown in the diagram. In this embodiment, the structure of the reaction gas supply 22b in the chemical regenerative reactor 2b is different. In this embodiment, a plate-shaped porous body is used as the reaction gas supply 22b.

[0095] <Reactant Gas Supplier>

[0096] The reaction gas supply 22 is housed inside the container 21 and is a component for guiding the reaction medium 9 (i.e., reaction gas 8) that has passed through the connecting part 7 to the inner side (downstream side of the reaction gas supply 22) opposite to the side of the opening 6 (upstream side of the reaction gas supply 22).

[0097] like Figure 5 As shown, in this embodiment, the reactant gas supply body 22b is a porous plate-shaped body, and the plate-shaped body 201 has plate-shaped components 202a and 202b.

[0098] "Platform Body"

[0099] like Figure 6 As shown in (C), the plate-shaped body 201 is provided with a plurality of through holes 203 extending along the thickness direction of the plate. The plate-shaped body 201 has a plate-shaped component 202a and a plate-shaped component 202b. The plate-shaped component 202a is configured to have a plate-shaped portion 204a and a plurality of through holes 203a, and the plate-shaped component 202b is configured to have a plate-shaped portion 204b and a plurality of through holes 203b.

[0100] The plate-shaped body 201 is configured with a through hole 203a in the plate-shaped member 202a on one side. Figure 6Through hole 203b of plate-shaped component 202b on the middle (A) and the other side (A) Figure 6 The state of overlapping parts of (B) is staggered. Figure 6 The plate body 201 has a plate-shaped portion 204a and a plate-shaped portion 204b that are in contact with each other and overlapped. Furthermore, three, four, or five or more plate-shaped components 202 can be overlapped in the plate-shaped body 201. The plate-shaped body 201 becomes a plate-shaped porous body by stacking multiple plate-shaped components 202 into a single plate. Additionally, the plate-shaped component 202 can be a component called a perforated metal plate, which has multiple through holes in a metal sheet.

[0101] Furthermore, the diameters of the through holes 203a and 203b are not particularly limited as long as they are designed to not obstruct the flow of the reactive gas 8 to the chemical heat storage material 4 when stacked. However, if all through holes 203a and 203b are arranged with the same diameter and at the same interval, the manufacturing of the plate-shaped component 202 becomes simpler. Moreover, the diameters of the through holes 203a and 203b can be set differently on the upstream and downstream sides, and the flow rate of the reactive gas 8 can also be designed to differ on the upstream and downstream sides.

[0102] like Figure 7 As shown, the plate-shaped bodies 201 are stacked in a state where the through hole 203a on one side of the upstream side is connected to the through hole 203b on the other side, and the through hole 203b on the other side is connected to the through hole 203a on one side of the downstream side. Thus, with the through holes 203a and 203b connected, the space of the through holes 203 becomes curved left and right and connected to the downstream side. In other words, the reactant gas 8 can pass through in a curved manner from the upstream side to the downstream side in the order of the through hole 203a on one side, the through hole 203b on the other side, and the through hole 203a on the downstream side.

[0103] The material of the plate 201 is not particularly limited as long as it is a material or structure that is not easily flattened or deformed by the pressure 29, but it is preferably made of metal. In the case of metal, the thermal conductivity is good, and the plate 201 will be heated by the reaction gas 8. This heat will be transferred to the downstream chemical heat storage material 4, causing the temperature of the downstream chemical heat storage material 4 to rise, thereby increasing the reaction rate. Therefore, it is preferred.

[0104] In this embodiment, since a plate-shaped body 201 is used, both sides of the reactant gas supply body 22b are in contact with the chemical heat storage material 4. The contact area (area for supplying heat) between the plate-shaped body 201 and the chemical heat storage material 4 is increased, and heat can be effectively transferred from the plate surface of the plate-shaped body 201 to the downstream side (inner side) of the chemical heat storage material 4. Therefore, it has the effect of effectively improving the reaction rate of the downstream chemical heat storage material 4.

[0105] like Figure 7 As shown, in the reactant gas supply body 22b, the movement space (flow path) of the reactant gas 8 is tortuous and connects from the upstream side to the downstream side, thus eliminating the need to ensure a straight internal space for movement from the upper end to the lower end of the reactant gas supply body 22b. Therefore, since a straight internal space is not required, the area occupied by the reactant gas supply body 22b in the container 21 can be reduced. Consequently, the amount of chemical heat storage material 4 placed in the container 21 can be increased, which is preferable.

[0106] like Figure 8 As shown, the superimposed portion 30, in which the plate-shaped portions 204a and 204b are in contact, exists throughout the plate-shaped portions 204a and 204b, which is equivalent to the internal blockage of the porous body.

[0107] When the chemical heat storage material 4 reacts with the reactive gas 8, thereby repeatedly dissipating heat and storing heat, the pressure on the downstream (inner) side of the reactive gas supply body 22b increases, resulting in a pressure in the flattening direction (flattening pressure 29) being applied to the reactive gas supply body 22b. Since there is an internal blockage part (i.e., the stacked part 30), the plate-shaped body 201 is not easily deformed and flattened by the flattening pressure 29, which can improve the durability of the reactive gas supply body 22b and easily ensure the flow path on the downstream side through which the reactive gas 8 passes. Therefore, it is preferred.

[0108] Other features

[0109] The portion of the plate-shaped component 202b side of the through hole 203a is the flow path through which the reaction gas 8 flows, and the opening on the chemical heat storage material 4 side of the through hole 203a corresponds to the gas supply section 26a.

[0110] Furthermore, the portion of the plate-shaped component 202a side of the through hole 203b is the flow path through which the reaction gas 8 flows, and the opening on the chemical heat storage material 4 side of the through hole 203b corresponds to the gas supply section 26b.

[0111] like Figure 7As shown, the downstream sidewalls of the through holes 203a and 203b of the plate-shaped component 202a and plate-shaped component 202b correspond to diffusers 28a and 28b, respectively. When the reactant gas 8 passes through from the upstream side, it collides with the diffusers 28a or 28b, changing its flow direction toward the chemical heat storage material 4. The reactant gas 8, having changed direction, reacts with the chemical heat storage material 4 after passing through the gas supply section 26a or 26b (reactant gas 8a), or continues to flow through the downstream path (reactant gas 8b) and collides with the downstream diffuser 28b, changing its direction.

[0112] As described above, the reaction gas 8 from the upstream side changes direction toward the chemical heat storage material 4 through the diffuser 28a or 28b, thereby easily guiding the reaction gas 8 to the entire gas supply section 26a and gas supply section 26b of the reaction gas supply body 22.

[0113] Furthermore, the reactive gas supply body 22b can be placed in a container or bag made of a metal mesh, or a mesh-like component can be placed between the reactive gas supply body 22b and the chemical heat storage material 4 to prevent the chemical heat storage material 4 from entering the through hole of the gas supply section 26b and causing blockage.

[0114] [The role of the reactant gas supplier in a chemical regenerative reactor]

[0115] according to Figure 7 The movement of the reaction gas 8 during the reaction in the chemical regenerative reactor 2b of this embodiment will be described.

[0116] The reaction gas 8, which passes through the outside of the chemical regenerative reactor 2b (i.e., the connecting part 7 and the opening part 6), is guided from the opening part 6 side (upstream side) of the reaction gas supply body 22b to the through hole 203 of the plate body 201.

[0117] The reactant gas 8, guided to the through hole 203, moves from the upstream side to the downstream side and collides with the diffuser 28a or 28b. After the collision, the reactant gas 8 changes direction toward the chemical heat storage material 4. The reactant gas 8, after changing direction, reacts with the chemical heat storage material 4 after passing through the gas supply section 26a or 26b (reactant gas 8a), or continues to flow through the downstream path (reactant gas 8b) and collides with the downstream diffuser 28b or 28a, changing direction.

[0118] As described above, the reactive gas 8 guided from the upstream side changes direction toward the chemical heat storage material 4, so that the reactive gas 8 can be easily guided to the entire upstream gas supply section 26a and 26b and the downstream gas supply section 26a and 26b of the reactive gas supply body 22b, and the chemical heat storage material 4 as a whole can easily react with the reactive gas 8.

[0119] In this embodiment, a plate-shaped body formed by stacking plate-shaped components with multiple through holes is illustrated as a porous body. However, a continuous bubble body (referred to as foam metal) consisting of a honeycomb structure of metal with numerous small spaces and interconnected bubbles can also be used as a plate-shaped component. That is, multiple sheets of foam metal serving as plate-shaped components 202 can be stacked to form a plate-shaped body. Furthermore, a plate-shaped body 201 (porous body) can be formed by stacking perforated metal plates and foam metal serving as plate-shaped components 202, or a plate-shaped body 201 (porous body) can be formed by sandwiching foam metal between two perforated metal plates, and the combination of porous bodies is not limited.

[0120] [Third Implementation]

[0121] Figure 9 This is a schematic explanatory diagram showing the structure of the chemical thermal storage reactor 2c of the chemical thermal storage device 1c according to the third embodiment of the present invention from a top view. Additionally, Figure 9 The heat exchange piping 5 is not shown in the diagram.

[0122] The difference between the structure of the chemical regenerative reactor 2c and the chemical regenerative reactor 2b in this embodiment is that multiple plate-shaped bodies 201 of the chemical regenerative reactor 2b are used, and the multiple plate-shaped bodies 201 are arranged crosswise with each other.

[0123] In the chemical regenerative reactor 2c of this embodiment, a plurality of plate-shaped bodies 201 are configured to intersect each other and be arranged in a grid pattern from the upstream side to the downstream side, thereby increasing the contact area between the plate-shaped bodies 201 and the chemical regenerative material 4, and enabling heat to be effectively transferred from the plate surface of the metal plate-shaped bodies 201 to the downstream side (inner side) of the chemical regenerative material 4.

[0124] Furthermore, if the plate-shaped bodies 201 are arranged in a grid pattern inside the container 21 and the end faces of the plate-shaped bodies are in contact with the inner surface of the container 21, the effect of suppressing the deformation of the container 21 is improved.

[0125] [Other Implementation Methods]

[0126] In the second embodiment of the present invention, an example is shown where the plate-shaped body 201 formed by stacking plate-shaped members 201a and 201b is a porous body, but as Figure 10 and Figure 11As shown, when using a continuous bubble-like foam metal as the plate-shaped body 201, it is not necessary to stack multiple plate-shaped components 202; a single plate-shaped porous body of foam metal can be used as the plate-shaped body 201. In this case, a single plate-shaped porous body constitutes the plate-shaped body 201, making it easy to operate. Furthermore, since the foam metal is made of metal, it has good thermal conductivity, which has the effect of transferring heat from the reacting gas to the chemical heat storage material, thereby increasing the reaction rate. Moreover, if it is a single plate-shaped foam metal, the contact area (heat-supplying area) between the porous body (i.e., the plate-shaped body 201) and the chemical heat storage material 4 is increased, which has the effect of effectively transferring heat from the plate surface of the plate-shaped body 201 to the downstream (inner) side of the chemical heat storage material 4.

[0127] In addition, such as Figure 12 As shown, in the third embodiment of the present invention, the plate-shaped body 201 can also be a plate-shaped foam metal and multiple plate-shaped bodies 201 can be arranged in a grid pattern for application.

[0128] Industrial availability

[0129] The chemical heat storage device and the heat storage method of the chemical heat storage material of the present invention are suitable for use as a mechanism for effectively utilizing the heat dissipation (waste heat) from heat sources that generate heat during operation (e.g., drive mechanisms such as engines, and equipment that performs combustion processes in factories (such as waste incineration facilities)).

[0130] Symbol Explanation

[0131] 1a, 1b, 1c - Chemical thermal storage device; 2a, 2b, 2c - Chemical thermal storage reactor; 3 - Condenser; 4 - Chemical thermal storage material; 5 - Heat exchange piping; 6 - Opening; 7 - Connecting part; 8 - Reaction gas; 9 - Reaction medium; 10 - Valve; 21 - Container; 22a, 22b - Reaction gas supply body; 23 - Internal space; 24 - Wall component; 25 - Missing number; 26, 26a, 26b - Gas supply part; 27 - Flattening suppression component; 28a, 28b - Diffusion part; 29 - Flattening pressure; 30 - Stacking part; 201 - Plate-shaped body; 202, 202a, 202b - Plate-shaped component; 203, 203a, 203b - Through hole; 204a, 204b - Plate-shaped part.

Claims

1. A chemical regenerative reactor, characterized in that, have: container; Chemical heat storage material, contained inside the container; and A reactant gas supply is housed inside the container and directs the reactant gas used for the reaction of the chemical heat storage material to the chemical heat storage material. The reactant gas supply is a plate-shaped body with through holes. The plate-like body has two or more plate-like components, each plate-like component having multiple through holes along its thickness direction. The plate-like components are stacked together in a staggered manner, with a portion of the through holes on one side overlapping a portion of the through holes on another side. The reactive gas branches into a branch flowing through the through-hole and a branch flowing toward the chemical thermal storage material.

2. The chemical regenerative reactor according to claim 1, characterized in that, The reactive gas supply is formed by arranging multiple plate-shaped bodies in a crosswise configuration along the thickness direction of the plates.

3. The chemical regenerative reactor according to claim 1 or 2, characterized in that, The reactive gas supply is contained in a container or bag made of a metal screen, or a screen-like component is provided between the reactive gas supply and the chemical heat storage material.

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