WO2023176406A1 - Réacteur d'accumulation de chaleur chimique - Google Patents

Réacteur d'accumulation de chaleur chimique Download PDF

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Publication number
WO2023176406A1
WO2023176406A1 PCT/JP2023/007084 JP2023007084W WO2023176406A1 WO 2023176406 A1 WO2023176406 A1 WO 2023176406A1 JP 2023007084 W JP2023007084 W JP 2023007084W WO 2023176406 A1 WO2023176406 A1 WO 2023176406A1
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Prior art keywords
heat storage
chemical heat
storage material
chemical
reaction
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Ceased
Application number
PCT/JP2023/007084
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English (en)
Japanese (ja)
Inventor
宗樹 西村
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Sumitomo Heavy Industries Ltd
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Sumitomo Heavy Industries Ltd
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Application filed by Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to CN202380018724.6A priority Critical patent/CN118613692A/zh
Priority to JP2024507680A priority patent/JPWO2023176406A1/ja
Publication of WO2023176406A1 publication Critical patent/WO2023176406A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00

Definitions

  • the present invention relates to a chemical heat storage reactor of a chemical heat storage reactor.
  • Chemical heat storage which stores and dissipates heat using chemical reactions and makes it possible to store thermal energy at room temperature, is used not only in drive engines such as engines, but also in factories and equipment that performs combustion processing (such as garbage incineration facilities) during operation. Research and development is progressing from the perspective of effectively utilizing waste heat from heat sources that generate heat.
  • a chemical heat storage reaction device for chemical heat storage generally uses a solid chemical heat storage material, and stores heat from an endothermic reaction when heat is applied to the chemical heat storage material to separate the generated gas.
  • the structure is such that heat can be radiated to the outside of the chemical heat storage reaction device by causing an exothermic reaction with the reaction gas.
  • Patent Document 1 describes that an exothermic reaction is efficiently performed by fluidizing and mixing a chemical heat storage material using a reaction gas.
  • an object of the present invention is to provide a chemical heat storage reactor that has a simple structure and can move the chemical heat storage material and cause the chemical heat storage material to react efficiently.
  • the present invention is the following chemical heat storage reactor.
  • the chemical heat storage device of the present invention for solving the above-mentioned problems is characterized by a moving region where the chemical heat storage material moves due to vibration and/or its own weight, and a reaction between the chemical heat storage material while moving in the moving region.
  • this chemical heat storage device since the chemical heat storage material is moved by vibration and/or its own weight, it has a simple structure and has the effect of efficiently causing the chemical heat storage material in the heat storage container to react.
  • the chemical heat storage device of the present invention for solving the above-mentioned problems is characterized by a moving region where the chemical heat storage material moves due to vibration and/or its own weight, and a reaction between the chemical heat storage material while moving in the moving region.
  • this chemical heat storage device since the chemical heat storage material is moved by vibration and/or its own weight, it has a simple structure and has the effect of efficiently causing the chemical heat storage material in the heat storage container to react.
  • the chemical heat storage device of the present invention for solving the above-mentioned problems is characterized by being equipped with a reaction gas supply body that supplies a reaction gas or discharges a generated gas into the inside of a heat storage container having a moving region.
  • the reactive gas supply body efficiently supplies the reactive gas to the chemical heat storage material in the heat storage container by supplying the reactive gas to the heat storage material in the heat storage container or discharging the generated gas. Therefore, there is an effect that the chemical heat storage material in the heat storage container can react more efficiently.
  • An embodiment of the chemical heat storage device of the present invention is characterized in that the reaction gas supply unit that supplies the reaction gas or discharges the generated gas is connected to the reaction gas supply body.
  • this chemical heat storage device since the reactive gas supply section and the reactive gas supply body are connected, the efficiency of supplying the reactive gas to the chemical heat storage material of the heat storage container or discharging the generated gas is improved, and the chemical heat storage This has the effect of making the material more reactive.
  • one embodiment of the chemical heat storage device of the present invention is characterized in that the reactive gas supply section that supplies the reactive gas is disposed on the downstream side in the movement direction of the chemical heat storage material.
  • the reactive gas is supplied from the side where the chemical heat storage materials are densely arranged, it is possible to suppress the reacted chemical heat storage materials from coming into contact with the air inside the heat storage container, thereby reducing heat loss. It can be suppressed.
  • the unreacted chemical heat storage material reacts immediately after being supplied, and the chemical heat storage material near the outlet of the feeder reacts, so that the chemical heat storage material reacts without contacting the heat exchange piping. This has the effect of suppressing heat loss.
  • one embodiment of the chemical heat storage device of the present invention is characterized in that the reaction gas supply section that discharges the generated gas is arranged above the chemical heat storage material.
  • the reactive gas supply section is arranged above the chemical heat storage material, there is no need to provide a structure to prevent a part of the chemical heat storage material from flowing out from the reactive gas supply section, and the chemical It does not impede the flow of reaction gas during heat storage, and has the effect of simplifying the structure.
  • the chemical heat storage material reaction method of the present invention for solving the above problems is characterized by a moving step of moving the chemical heat storage material by vibration and/or its own weight, and a reaction of the chemical heat storage material while being moved in the moving step. shall be.
  • the chemical heat storage material reaction method of the present invention for solving the above problems includes a moving step in which the chemical heat storage material is moved by vibration and/or its own weight, and a reaction in which the chemical heat storage material is stopped from moving. It is characterized by
  • FIG. 1 is a schematic explanatory diagram showing the structure of a chemical heat storage device according to a first embodiment of the present invention.
  • FIG. 2 is a schematic explanatory diagram showing the structure of a chemical heat storage device according to a second embodiment of the present invention. It is a schematic explanatory drawing which shows the structure of the chemical thermal storage device of the 3rd embodiment of this invention.
  • FIG. 2 is a schematic explanatory diagram showing the structure of a reactive gas supply body used in the chemical heat storage device according to the first embodiment of the present invention.
  • FIG. 2 is a schematic explanatory diagram showing the structure of a reactive gas supply body used in the chemical heat storage device according to the first embodiment of the present invention.
  • FIG. 1 is a schematic explanatory diagram showing the structure of a chemical heat storage device according to a first embodiment of the present invention.
  • FIG. 2 is a schematic explanatory diagram showing the structure of a chemical heat storage device according to a second embodiment of the present invention. It is a schematic explanatory drawing which shows
  • FIG. 2 is a schematic explanatory diagram showing the structure of a reactive gas supply body used in the chemical heat storage device according to the first embodiment of the present invention. It is a schematic explanatory drawing which shows the structure of the chemical heat storage device of the 4th embodiment of this invention.
  • FIG. A is a schematic explanatory diagram showing the structure of a reactive gas supply body used in a chemical heat storage device according to a fourth embodiment of the present invention.
  • Figure B is a schematic explanatory diagram of Figure A viewed from the upstream side.
  • FIG. A is a schematic explanatory diagram showing the structure of a reactive gas supply body used in a chemical heat storage device according to a fourth embodiment of the present invention.
  • Figure B is a schematic explanatory diagram of Figure A viewed from the upstream side.
  • the chemical heat storage device and the reaction method of the chemical heat storage material of the present invention utilize waste heat from heat sources that generate heat during operation, such as drive engines such as engines, factories, and equipment that performs combustion processing (garbage incineration facilities, etc.). (waste heat) is stored in a chemical heat storage material, and when heat is needed, the heat is radiated from the heat storage product, making it possible to utilize the heat.
  • the chemical heat storage device of the present invention may be used as a heat supply source while being fixed at a predetermined position, or it may be a transportable device and used by being transported to a heat demand location where heat is required. It can also be used as a thing.
  • the chemical heat storage device and the reaction method of the chemical heat storage material of the present invention include heating the chemical heat storage material to separate it into a heat storage product and a generated gas during heat storage, and reacting the heat storage product and the reaction gas during heat release. It generates chemical heat storage material.
  • the generated gas generated during heat storage and the reaction gas supplied during heat radiation are the same type of substance. Then, through the liquefaction process in which the generated gas is condensed and recovered as a reaction liquid, and the vaporization process in which the reaction liquid obtained in the liquefaction process is evaporated and used as a reaction gas, the reaction related to chemical heat storage progresses, and the chemical heat storage material is Heat storage and heat dissipation are possible.
  • the generated gas and the reaction gas may be referred to as "reaction medium.”
  • the present invention efficiently reacts the entire chemical heat storage material in a heat storage container with a simple structure by providing a moving area in which the chemical heat storage material moves due to vibration and/or its own weight.
  • the chemical heat storage device and the reaction method of the chemical heat storage material described in the embodiments are merely exemplified to explain the reaction method of the chemical heat storage device and the chemical heat storage material according to the present invention, and similar effects can be achieved. However, it is not limited to these. Moreover, the reaction method of the chemical heat storage material of the present invention shall be replaced with the operation of the chemical heat storage device.
  • FIG. 1 is a schematic explanatory diagram showing the structure of a chemical heat storage device 1a according to a first embodiment of the present invention.
  • This chemical heat storage device 1a includes a chemical heat storage material 2, a chemical heat storage reactor 3 in which the chemical heat storage material 2 causes an exothermic reaction or a heat storage reaction while moving, and an evaporative condenser that supplies a reaction gas 7 to the chemical heat storage reactor 3. 4, a heat storage material container 5 located on the upstream side in the moving direction of the chemical heat storage material 2, and a heat storage material container 6 located on the downstream side in the moving direction of the chemical heat storage material 2.
  • the chemical heat storage material 2 is a chemical substance that is separated into a heat storage product and a generated gas 8 (reaction medium 9) during heat storage, and releases heat by the reverse reaction.
  • the heat storage product and generated gas 8 include calcium oxide (CaO) and water vapor (H 2 O), calcium chloride (CaCl 2 ) and water vapor (H 2 O), calcium bromide (CaBr 2 ) and water vapor (H 2 O), and calcium bromide (CaBr 2 ) and water vapor (H 2 O) .
  • the chemical heat storage material 2 preferably uses water vapor as the generated gas 8 and the reaction gas 7.
  • the structure and shape of the chemical heat storage material 2 are not particularly limited as long as they can move in a moving region 33a, which will be described later. Can be mentioned. Alternatively, it may be a molded body obtained by molding powder, or a porous body supporting the chemical heat storage material 2. Powder form is preferable from the viewpoint of having a large surface area to increase reactivity.
  • the chemical heat storage reactor 3 heats the chemical heat storage material 2 and separates generated gas 8 from the chemical heat storage material 2 to perform a heat storage reaction, and also supplies reaction gas 7 to the chemical heat storage material 2 to perform a heat dissipation reaction. It is for this purpose.
  • the chemical heat storage reactor 3 may have any size as long as the chemical heat storage material 2 can store and release heat. As shown in FIG. 1, the chemical heat storage reactor 3 includes a heat storage container 31, a heat exchange section 32a, a movement region 33a, a reaction gas supply section 34, and supply machines 35 and 36.
  • the heat storage container 31 is configured to hold the chemical heat storage material 2, and is made of a sealable structure.
  • the shape and material of the heat storage container 31 are not particularly limited, but preferably have pressure resistance. Having pressure resistance suppresses changes in the internal volume due to changes in the internal pressure of the heat storage container 31, thereby providing an effect that the internal pressure can be easily controlled.
  • the shape and material of the heat storage container 31 are not particularly limited.
  • the heat exchange section 32a exchanges the heat of the heat exchange medium inside the heat exchange section 32a with the chemical heat storage material 2, and the chemical heat storage material 2 receives the heat of the heat exchange section 32a or converts the heat of the chemical heat storage material 2 into chemical heat storage. It has a function for taking out the reactor 3 to the outside.
  • the heat exchange part 32a is a plate-shaped member and has a space through which a heat exchange medium passes.
  • the heat exchange part 32a is arranged in the internal space 311 of the heat storage container 31 in a state that intersects with the direction of gravity, and is arranged in an inclined state.
  • the movement region 33a is a region where the chemical heat storage material 2 supplied from the heat storage material container 5 moves, and corresponds to the region on the upper surface of the heat exchange section 32a.
  • the chemical heat storage material 2 performs an exothermic reaction or a heat storage reaction while moving in the moving region 33a.
  • the chemical heat storage material 2 in the movement region 33a is not fluidized by the pressure of the reaction gas 7, and moves by gravity along the upper surface of the heat exchange section 32a.
  • the reaction gas supply section 34 is a section to which the reaction gas 7 supplied from the evaporative condenser 4 during exothermic reaction is supplied via the medium flow path L1. Further, the reaction gas supply section 34 is also an entrance portion through which the generated gas 8 generated during the heat storage reaction moves to the evaporation condenser 4 via the medium flow path L1. Note that the valve V1 of the medium flow path L1 is opened when performing an exothermic reaction or an endothermic reaction.
  • the reactive gas supply section 34 may be provided in any part of the heat storage container 31, but if it is arranged on the downstream side in the movement direction of the chemical heat storage material 2, it will be provided from the side where the chemical heat storage material 2 is densely arranged. Since the reaction gas 7 is supplied, the reacted chemical heat storage material 2 can be prevented from coming into contact with the air in the internal space 311 of the heat storage container 31, and heat loss can be suppressed. In other words, the unreacted chemical heat storage material 2 supplied from the feeder 35, which will be described later, reacts immediately and the chemical heat storage material 2 near the outlet of the feeder 35 reacts, so that it comes into contact with the heat exchange section 32a.
  • the supply machine 35 is arranged on the upstream side in the moving direction of the chemical heat storage material 2, and continuously supplies the chemical heat storage material 2 in the heat storage material container 5, which will be described later, into the inside of the heat storage container 31 via the heat storage material supply path L2. do. Further, the supply machine 36 is disposed on the downstream side in the movement direction of the chemical heat storage material 2, and continuously discharges the chemical heat storage material 2 in the heat storage container 31 to a heat storage material container 6, which will be described later, via a heat storage material discharge path L3. do. Examples of the feeder 35 and the feeder 36 include a screw feeder and a rotary valve.
  • the supply machine 35 and the supply machine 36 can block the reaction gas 7 from flowing into the heat storage material container 5 or the heat storage material container 6, and supply the chemical heat storage material 2 to the heat storage container 31 or the chemical heat storage material 2 from the heat storage container 31.
  • it has a closed structure that can be drained. With this structure, reaction with the chemical heat storage material 2 in the heat storage material container 5 or the heat storage material container 6 can be suppressed, and the heat exchange efficiency becomes high.
  • the evaporative condenser 4 supplies a reaction gas to the chemical heat storage reactor 3 during the exothermic reaction of the chemical heat storage material 2, and during the heat storage reaction, generated gas 8 flows from the chemical heat storage reactor 3 and is stored as a reaction medium 9 in a liquid state. It is a structure for The evaporative condenser 4 includes a heat exchange pipe 41, through which heat exchange is performed with the reaction medium 9, and the reaction medium 9 is supplied to the chemical heat storage reactor 3 as a reaction gas 7 during an exothermic reaction. Further, during the heat storage reaction, the generated gas 8 is condensed into a liquid state to become a reaction medium 9.
  • the heat exchange pipe 41 may be cooled by a cooling device or the like, or may be cooled by natural heat radiation.
  • the evaporative condenser 4 may be equipped with a vacuum pump 41 and a line 42.
  • the structure and material of the heat storage material container 5 and the heat storage material container 6 are not particularly limited as long as they can store the chemical heat storage material 2, but they must be sealed so that the state of the discharged chemical heat storage material 2 does not change. It is preferable that the structure is capable of storing the chemical heat storage material 2 as much as possible.
  • the heat storage material container 5 is a structure that is disposed on the upstream side in the moving direction of the chemical heat storage material 2 and stores the chemical heat storage material 2 before being reacted in the chemical heat storage reactor 3.
  • the heat storage material container 6 is a structure that is disposed on the downstream side in the moving direction of the chemical heat storage material 2, and stores the chemical heat storage material 2 after reacting in the chemical heat storage reactor 3.
  • the heat storage material container 5 and the heat storage material container 6 are provided so as to be replaceable from the chemical heat storage reactor 3.
  • the chemical heat storage material 2 is supplied from the heat storage material container 5 to the chemical heat storage reactor 3. This process is referred to as a supply step. At this time, the chemical heat storage material 2 stored in the heat storage material container 5 has completed heat storage. Further, the supply is performed by a supply device 35, and a constant amount is continuously supplied into the heat storage container 31.
  • the supplied chemical heat storage material 2 moves in the movement area 33a.
  • This process is defined as a moving step for moving the chemical heat storage material 2.
  • the supplied chemical heat storage material 2 is supplied to the heat exchange section 32a arranged at an angle, and the chemical heat storage material 2 moves by gravity due to its own weight in a movement region 33a that is the upper surface of the heat exchange section 32a.
  • the chemical heat storage material 2 reacts with the supplied reaction gas 7. Thereby, the reaction gas 7 and the chemical heat storage material 2 can be reacted efficiently, and heat is supplied to the outside of the chemical heat storage device 1a via the heat exchange section 32a.
  • the chemical heat storage material 2 that has moved through the movement area 33a is discharged into the heat storage material container 6.
  • the discharge is performed by the supply machine 36, and a constant and constant amount is discharged into the heat storage material container 6. This process is called the discharge step.
  • the above-mentioned supply step is performed, and the chemical heat storage material 2 is supplied to the chemical heat storage reactor 3. At this time, the chemical heat storage material 2 stored in the heat storage material container 5 has completed heat generation.
  • a moving step is performed, and while moving in the moving step, the chemical heat storage material 2 reacts with the heat supplied from the heat exchange section 32a, and a heat storage reaction is performed.
  • the generated gas 8 moves from the reaction gas supply section 34 through the medium flow path L1 to the evaporation condenser 4, and the chemical heat storage material 2 becomes in a state where heat is stored.
  • FIG. 2 a chemical heat storage device 1b according to a second embodiment will be described. Note that components having the same configuration as the chemical heat storage device 1a are given the same reference numerals, and explanations thereof will be omitted.
  • the chemical heat storage device 1b of this embodiment is different from the chemical heat storage device 1a in a heat exchange section 32b and a moving region 33b.
  • ⁇ Heat exchange section> The heat exchange section 32b has the same function as the heat exchange section 32.
  • the heat exchange portions 32b are tubular members, and a plurality of heat exchange portions 32b are arranged inside the heat storage container 31 at a distance in a direction intersecting gravity.
  • the heat exchange section 32b is shown in cross section in FIG. 2, it is arranged so as to extend in the direction of the paper.
  • the supply devices 35 and 36 are controlled so that the heat exchange section 32b is kept covered with the chemical heat storage material 2 around the heat exchange section 32b.
  • the movement area 33b is an area where the chemical heat storage material 2 moves, and corresponds to the area between the wall of the heat storage container 31 and the heat exchange part 32b or between the heat exchange parts 32b.
  • the moving region 33b moves so that the supplied chemical heat storage material 2 falls in the vertical direction due to gravity, and therefore does not require power for moving. Therefore, the structure of the device becomes simple.
  • a moving step of moving the chemical heat storage material 2 is performed, and the supplied chemical heat storage material 2 moves in the moving area 33b so as to fall by gravity due to its own weight.
  • the chemical heat storage material 2 reacts with the supplied reaction gas 7. Thereby, the reaction gas 7 and the chemical heat storage material 2 can be reacted efficiently, and heat is supplied to the outside of the chemical heat storage device 1b via the heat exchange section 32b.
  • the chemical heat storage material 2 that has moved through the movement area 33b is discharged into the heat storage material container 6.
  • the discharge is performed by the supply machine 36, and a constant and constant amount is discharged into the heat storage material container 6. This process is called the discharge step.
  • the heat storage reaction Similar to the operation of the chemical heat storage device 1a, a supply step, a movement step, and a discharge step are performed. In the movement step, the heat storage reaction is performed while the chemical heat storage material 2 is moved by gravity so as to fall vertically in the movement region 33b. Through the above series of steps, the exothermic reaction and heat storage reaction of the chemical heat storage device 1b are completed.
  • the chemical heat storage device 1c of this embodiment differs in the heat exchange section 32c and the moving region 33c, and also includes a reactive gas supply body 10 and a reactive gas supply section 34a and a reactive gas supply section 34b. Different from 1b.
  • ⁇ Heat exchange section> The heat exchange section 32c has the same function as the heat exchange sections 32a and 32b.
  • the heat exchange parts 32c are tubular members, and a plurality of heat exchange parts 32c are arranged inside the heat storage container 31, spaced apart in a direction intersecting the gravity, and arranged in a plurality in a row in the direction of gravity. Since the heat exchange section 32c is arranged side by side in the direction of gravity (vertical direction) compared to the heat exchange section 32b, it has the effect of reducing the installation area of the chemical heat storage reactor 3 and ensuring a long distance of the movement region 33c. . In addition, in this embodiment, the heat exchange part 32c illustrated the case where a plurality of tubular members are arranged apart from each other in the direction intersecting gravity, but a single heat exchange part 32c may be used.
  • the plate-shaped heat exchange part 32a of the first embodiment of the present invention may be arranged vertically so that the chemical heat storage material 2 falls in the direction of gravity.
  • the supply devices 35 and 36 are controlled so that the surroundings of the heat exchange section 32c are maintained covered with the chemical heat storage material 2.
  • the movement area 33c is an area where the chemical heat storage material 2 moves, and corresponds to the area between the wall of the heat storage container 31 and the heat exchange part 32c or between the heat exchange parts 32c. do. Since the moving region 33c can ensure a longer distance in the direction of gravity than the moving region 33b, the chemical heat storage material 2 can react efficiently.
  • the reaction gas supply body 10 is a member for securing a flow path for sending the reaction gas 7 to the downstream side of the chemical heat storage material 2 during an exothermic reaction, and also is a member for ensuring a flow path for sending the reaction gas 7 to the downstream side of the chemical heat storage material 2 during a heat storage reaction. This is a member for securing a flow path so that the generated gas 8 can easily reach the reaction gas supply section 34b.
  • the reactive gas supply body 10 is arranged inside the heat storage container 31 having the moving region 33c, and is arranged with a part of the upstream side exposed to the space 311 of the heat storage container 31.
  • the reaction gas 7 flows in or the generated gas 8 passes through the exposed portion of the reaction gas supply body 10 . Further, the reactive gas supply body 10 is arranged so as not to hinder the movement of the chemical heat storage material 2 due to gravity.
  • the reaction gas supply body 10 is not particularly limited as long as it has a structure that allows the reaction gas 7 and generated gas 8 to flow back and forth inside the chemical heat storage material 2. Specifically, a cylindrical casing or a porous body filled with the diffusion member 506 can be used.
  • the cylindrical casing in which the diffusion member 506 is filled has a through hole 503 provided in the wall member 502 of the casing 501, so that the reaction gas 7 can be passed through the upper opening 504 of the casing 501.
  • a structure in which the reaction gas 7 is supplied to the chemical heat storage material 2 from the through hole 503 can be used.
  • the shape of the casing 501 can be exemplified by a cylindrical shape or a rectangular cylindrical shape, but any shape may be used as long as it can secure a space that becomes a flow path for supplying the reaction gas 7 to the chemical heat storage material 2. .
  • the casing 501 is subjected to crushing pressure 505 caused by repeated expansion and contraction due to the reaction of the chemical heat storage material 2.
  • the diffusion members 506 filled in the housing 501 are used for the purpose of diffusing the reaction gas 7 in a meandering manner between the diffusion members 506, and also serve to prevent the reaction gas 7 from being crushed by the crushing pressure 505.
  • the diffusion member 506 is filled, an object made of another member that can secure a flow path (passage space) for the reaction gas 7 and can withstand the crushing pressure 505 is used.
  • An example of the diffusion member 506 is one filled inside the housing 501.
  • a PCM capsule that plays a role of storing latent heat may be used for the diffusion member 506.
  • a PCM capsule is a metal capsule containing a latent heat storage material (PCM is an abbreviation for Phase Change Material), and the latent heat storage material absorbs and releases heat by repeating melting and solidification. .
  • PCM Phase Change Material
  • the latent heat storage material absorbs and releases heat by repeating melting and solidification.
  • the latent heat storage material melts and becomes liquid, but since the outer metal capsule is in a solid state, the latent heat storage material does not leak, and even if crushing pressure 505 is generated. , a flow path for the reaction gas 7 can be secured.
  • porous body it is possible to use what is called a metal foam, which is a metal cell-like structure having a large amount of small spaces, and has open cells in which the cells are connected to each other.
  • FIG. 5C corresponds to the plate-like body 201 (FIG. 5C) in which the through-holes 203a and 203b of the plate-like members 202a and 202b are shifted from each other and overlapped.
  • the plate-like members 202a and 202b are arranged so that the through holes 203a and 203b are connected to each other. are overlapped with their positions shifted from each other, the reaction gas 7 enters from the through hole 203a in the portion exposed to the space 21, and the reaction gas 7 meanderingly flows downward through the through holes 203a and 203b. Moving. Therefore, it is possible to supply the reactive gas 7 also to the chemical heat storage material 2 below.
  • the reactive gas supply body 10 may be placed in a container or bag made of metal mesh, or a mesh member may be placed in the chemical heat storage material 2. It may also be placed between.
  • reaction gas supply section 34a and the reaction gas supply section 34b are supply ports through which the reaction gas 7 or the generated gas 8 flows back and forth to the evaporation condenser 4.
  • the reactive gas supply section 34a is disposed on the downstream side in the moving direction of the chemical heat storage material 2 and is connected to the downstream side of the reactive gas supply body 10, and the reactive gas supply section 34b is located at a position above the chemical heat storage material 2.
  • the reaction gas supply section 34a is provided with a structure that prevents a part of the chemical heat storage material 2 from flowing out, so as to suppress clogging of the medium flow path L1 with the chemical heat storage material 2.
  • the reaction gas is discharged from the evaporation condenser 4 with the valve V1 provided in the medium flow path L1 being operated to open and the valve V2 provided in the medium flow path L4 being closed. 7 is supplied to the chemical heat storage material 2 from the reactive gas supply body 10 via the reactive gas supply section 34a.
  • the generated gas 8 is reacted with the valve V1 provided in the medium flow path L1 being closed and the valve V2 provided in the medium flow path L4 being open.
  • the gas is released into the internal space of the heat storage container 31 via the exposed portion of the gas supply body 10, and is discharged from the reaction gas supply section 34b.
  • the generated gas 8 can easily move to the upstream side and the flow is not obstructed. Note that by supplying heat from the downstream side of the downstream heat exchange section 32c, the temperature on the downstream side increases, and the densely arranged chemical heat storage material 2 exhibits a heat retention effect, so heat is not transferred from the upstream side.
  • the heat storage reaction can be carried out more efficiently than when the heat is supplied.
  • a moving step of moving the chemical heat storage material is performed, and the supplied chemical heat storage material 2 moves in the moving area 33c so as to fall by gravity due to its own weight. While moving in the moving step, the chemical heat storage material 2 reacts with the reaction gas 7 supplied from the downstream side of the reaction gas supply body 10 . This allows the reaction gas 7 and the chemical heat storage material 2 to react efficiently, and heat is supplied to the outside of the chemical heat storage device 1c via the heat exchange section 32c.
  • the chemical heat storage material 2 that has moved through the movement area 33c is discharged into the heat storage material container 6.
  • the discharge is performed by the supply machine 36, and a constant and constant amount is discharged into the heat storage material container 6. This process is called the discharge step.
  • a supply step Similar to the operations of the chemical heat storage devices 1a and 1b, a supply step, a movement step, and a discharge step are performed. Note that during the supply step, the valve V1 is in a closed state and the valve V2 is in an open state. In the movement step, the heat storage reaction is performed while the chemical heat storage material 2 is moved by gravity so as to fall vertically in the movement area 33c. Through the above series of steps, the exothermic reaction and heat storage reaction of the chemical heat storage device 1c are completed.
  • a reaction gas supply section 34a and a reaction gas supply section 34b are provided, the reaction gas 7 is supplied from the reaction gas supply section 34a, and the generated gas 8 generated during the heat storage reaction is discharged from the reaction gas supply section 34b.
  • the reaction gas 7 may be supplied and the generated gas 8 may be discharged from the reaction gas supply section 34b without providing the reaction gas supply section 34a.
  • the reaction gas 7 may be supplied and the generated gas 8 may be discharged from the reaction gas supply section 34a without providing the reaction gas supply section 34b.
  • the upstream portion into which the chemical heat storage material 2 is introduced is connected to the reactive gas supply section 34b, so that the generated gas 7 or the reactive gas 8 can be passed through the reactive gas supply section 34b.
  • It has a structure in which the medium flows through the medium flow path L4. With this structure, the reaction gas 8 can be efficiently supplied to the chemical heat storage material 2 of the heat storage container 31 on the downstream side. Furthermore, by making the inside of the evaporative condenser 4 have a lower pressure than the heat storage container 31 using the vacuum pump 41, the transfer efficiency is improved when the generated gas 7 is transferred to the evaporative condenser 4.
  • FIG. 8 and 9 are diagrams showing the reactive gas supply body 10 and the reactive gas supply section 34b.
  • the upper part of the upstream side into which the chemical heat storage material 2 is introduced is covered with a cover member 34c.
  • This structure has a medium flow path L4 arranged on the side surface of the cover member 34c. Since the cover member 34c is structured to cover the upper end surface of the reactive gas supply body 10, it has the effect of suppressing the chemical heat storage material 2 supplied from upstream from entering the through holes 203a and the through holes 203b. . Further, with this structure, since a large connecting portion between the medium flow path L4 and the cover member 34c can be secured, the connection can be easily performed by a method such as welding, and manufacturing is easy.
  • a moving step of moving the chemical heat storage material is performed, and the supplied chemical heat storage material 2 moves in the moving area 33c so as to fall by gravity due to its own weight.
  • the cover member 34c covers the upper end surface of the reactive gas supply body 10
  • the supplied chemical heat storage material 2 flows from the upper end surface of the reactive gas supply body 10 into the through holes 203a and 203b. can be prevented from entering.
  • the chemical heat storage material 2 reacts with the reaction gas 7 supplied from the downstream side of the reaction gas supply body 10 . Thereby, the reaction gas 7 and the chemical heat storage material 2 can be efficiently reacted, and heat is supplied to the outside of the chemical heat storage device 1d via the heat exchange section 32c.
  • the chemical heat storage material 2 that has moved through the movement area 33c is discharged into the heat storage material container 6.
  • the discharge is performed by the supply machine 36, and a constant and constant amount is discharged into the heat storage material container 6. This process is called the discharge step.
  • a supply step Similar to the operation of the chemical heat storage device 1c, a supply step, a movement step, and a discharge step are performed. Note that during the supply step, the valve V1 is in a closed state and the valve V2 is in an open state. In the movement step, the heat storage reaction is performed while the chemical heat storage material 2 is moved by gravity so as to fall vertically in the movement area 33c.
  • the exothermic reaction and heat storage reaction of the chemical heat storage device 1d are completed.
  • the cover member 34c is provided on the upper end surface of the reactive gas supply body 10, and the reactive gas supply body 10 is connected to the reactive gas supply section 34b.
  • a cover member may be provided to cover the lower end surface of the body 10 to connect the reactive gas supply body 10 and the reactive gas supply section 34a. Further, the reactive gas supply body 10 may be connected to both the reactive gas supply section 34b and the reactive gas supply section 34a.
  • a reaction gas supply section 34a and a reaction gas supply section 34b are provided, and the reaction gas 7 is supplied from the reaction gas supply section 34a, and the generated gas 8 generated during the heat storage reaction is
  • the reaction gas 7 may be supplied and the generated gas 8 may be discharged from the reaction gas supply section 34b without providing the reaction gas supply section 34a.
  • the reaction gas 7 when the reaction gas 7 is supplied, the reaction of the chemical heat storage material 2 near the internal space 311 can be suppressed and the reaction can be caused near the heat exchange section 32c, so that heat exchange can be performed efficiently. I can do it.
  • the case where the heat exchange parts 32a, 32b, and 32c are arranged inside the heat storage container 31 is illustrated, but the A heat exchange member may be installed outside the heat storage container 31.
  • an inclined plate for guiding the chemical heat storage material 2 is arranged in place of the heat exchange section 32a.
  • the chemical heat storage material 2 is moved by gravity in the movement areas 33a, 33b, and 33c, but the chemical heat storage reactor 3 is moved by vibration. It may be equipped with a prompting device.
  • a vibrator that continuously vibrates the heat storage container 31 or the heat exchange parts 32a, 32b, and 32c, a knocker that vibrates periodically at regular intervals, or the like may be provided.
  • the flow path L1 and/or L4 connected to the reactive gas supply body 10 is connected to a compressor or the like, and high-pressure air is injected to the chemical heat storage material 2 through the reactive gas supply body 10, thereby controlling the movement of the chemical heat storage material 2. You can also encourage them.
  • the heat exchange member 32a may be arranged at an angle so that the chemical heat storage material 2 does not move due to gravity but moves when vibration is applied.
  • the chemical heat storage material 2 may be batch-processed, and after completing the exothermic reaction or heat storage reaction while the movement of the chemical heat storage material 2 in the moving area 33a is stopped (no vibration is applied), The chemical heat storage material 2 may be moved by applying vibration.
  • the heat exchange part 32b or 32c is kept covered with the chemical heat storage material 2; A case where a continuous and constant amount is controlled by the feeders 35 and 36 has been illustrated.
  • the chemical heat storage material 2 may be subjected to batch processing, in which the feeder 35 is operated and the feeder 36 is stopped so that the heat exchange section 32b or 32c is covered, and the chemical heat storage material 2 is processed in the transfer area 33b or 33c. After the movement of the heat storage material 2 is stopped and the exothermic reaction or heat storage reaction is completed, the feeder 36 may be operated to discharge (move) the chemical heat storage material 2 after the reaction.
  • valve V1 when an exothermic reaction is performed, the valve V1 is in an open state and the valve V2 is in a closed state, and when a heat storage reaction is performed, the valve V1 is in an open state and a valve V2 is in a closed state.
  • the case where the valve V2 is in the closed state and the valve V2 is in the open state is illustrated.
  • the valve V1 if the entire reaction gas supply body 10 is covered with the chemical heat storage material 2 as in the case of batch processing, the valve V1 is in the closed state during the exothermic reaction.
  • valve V1 and valve V2 may be in an open state, or, when performing a heat storage reaction, valve V1 may be in an open state and valve V2 may be in a closed state. Moreover, both the valve V1 and the valve V2 may be in an open state during the exothermic reaction and the heat storage reaction.
  • the chemical heat storage material 2 is moved vertically by gravity in the movement areas 33a, 33b, and 33c, but in the horizontal direction (lateral direction) You may move it.
  • the chemical heat storage device and the heat storage method of the chemical heat storage material of the present invention utilize exhaust heat from heat sources that generate heat during operation, such as drive engines such as engines, factories and equipment that performs combustion processing (garbage incineration facilities, etc.). It is suitably used as a means to effectively utilize (waste heat).

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Abstract

La présente invention aborde le problème de l'utilisation d'un réacteur d'accumulation de chaleur chimique qui a une structure simple et qui peut provoquer efficacement la réaction d'un matériau d'accumulation de chaleur chimique en déplaçant le matériau d'accumulation de chaleur chimique. Pour résoudre le problème ci-dessus, le dispositif d'accumulation de chaleur chimique de la présente invention est caractérisé par une région de déplacement dans laquelle le matériau d'accumulation de chaleur chimique est déplacé par des vibrations et/ou par son propre poids et par la réaction du matériau d'accumulation de chaleur chimique tout en se déplaçant dans la région de déplacement. Ce dispositif d'accumulation de chaleur chimique a une structure simple, car le matériau d'accumulation de chaleur chimique est déplacé par des vibrations et/ou par son propre poids et permet de provoquer efficacement la réaction d'un matériau d'accumulation de chaleur chimique dans un récipient d'accumulation de chaleur.
PCT/JP2023/007084 2022-03-14 2023-02-27 Réacteur d'accumulation de chaleur chimique Ceased WO2023176406A1 (fr)

Priority Applications (2)

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CN202380018724.6A CN118613692A (zh) 2022-03-14 2023-02-27 化学蓄热反应器
JP2024507680A JPWO2023176406A1 (fr) 2022-03-14 2023-02-27

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JP2022-039754 2022-03-14
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5773369A (en) * 1980-10-27 1982-05-08 Toyo Engineering Corp Chemical heat pump
JPH05248728A (ja) * 1992-03-06 1993-09-24 Hitachi Ltd 化学蓄熱型ヒートポンプ
US20140096933A1 (en) * 2011-06-07 2014-04-10 Commissariat A L'energie Atomique Et Aux Ene Alt Reactive solid/heat-transport gas reactor including a helical duct in which the solid and the gas flow in opposite directions
JP2016008744A (ja) * 2014-06-23 2016-01-18 トヨタ自動車株式会社 可逆的反応により蓄熱と放熱を繰り返す化学蓄熱体を用いる熱輸送システム
CN111457769A (zh) * 2020-06-03 2020-07-28 黄景温 一种高温废水余热回收利用装置
CN113663636A (zh) * 2021-08-31 2021-11-19 南京工业大学 一种回转式钙基高温热化学储能反应装置及储能反应方法
CN113720188A (zh) * 2021-08-30 2021-11-30 中国科学院过程工程研究所 一种储热球短距离储热输热系统及其运行方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5773369A (en) * 1980-10-27 1982-05-08 Toyo Engineering Corp Chemical heat pump
JPH05248728A (ja) * 1992-03-06 1993-09-24 Hitachi Ltd 化学蓄熱型ヒートポンプ
US20140096933A1 (en) * 2011-06-07 2014-04-10 Commissariat A L'energie Atomique Et Aux Ene Alt Reactive solid/heat-transport gas reactor including a helical duct in which the solid and the gas flow in opposite directions
JP2016008744A (ja) * 2014-06-23 2016-01-18 トヨタ自動車株式会社 可逆的反応により蓄熱と放熱を繰り返す化学蓄熱体を用いる熱輸送システム
CN111457769A (zh) * 2020-06-03 2020-07-28 黄景温 一种高温废水余热回收利用装置
CN113720188A (zh) * 2021-08-30 2021-11-30 中国科学院过程工程研究所 一种储热球短距离储热输热系统及其运行方法
CN113663636A (zh) * 2021-08-31 2021-11-19 南京工业大学 一种回转式钙基高温热化学储能反应装置及储能反应方法

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