Cross-seasonal heat storage and release integrated system based on thermochemical heat storage material

Abstract

The utility model discloses a cross-seasonal heat storage and release integrated system based on thermochemical heat storage materials. The cross-seasonal heat storage and release integrated system comprises a heat storage reaction material bin, a reactor, a heater, a solid product cooler, a heat storage solid product bin, a heat exchanger, an induced draft fan, a gas product storage tank, a valve, an air feeder, a controllable three-way valve, a dividing wall type heating surface and a separator. Compared with the prior art, the utility model has the advantages of reasonable flow, wide application range, large handling capacity, high system integration and high heat storage efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the energy storage technical field, concretely relates to a cross-seasonal heat storage and release integrated system based on thermochemical heat storage material. BACKGROUND

[0002] Since the "double carbon" goal was proposed, the efficient consumption of new energy and the effective reduction of fossil energy have been the key challenges to achieve this ambitious blueprint. In order to effectively solve this problem, actively tap the waste heat resources of traditional high-energy-consuming industries, and store green power in the form of heat energy through heat storage technology, which is gradually showing its great application potential and strategic value. This innovative energy conversion and storage method not only improves energy utilization efficiency, but also helps to optimize energy structure and promote green transformation of industry, providing a feasible path to achieve carbon peak and carbon neutralization.

[0003] Heat storage technology can be divided into three categories according to the principle: sensible heat storage, latent heat storage (phase change energy storage) and thermochemical heat storage technology. Among them, thermochemical heat storage technology realizes the storage and release of heat energy through reversible chemical reaction. Sensible heat and latent heat storage technology, thermochemical heat storage technology obtains high heat storage density reactants after heat storage. Thus, the inevitable heat dissipation problem of sensible heat and latent heat storage during cross-seasonal heat storage is eliminated. The core of this technology is to utilize the heat effect in chemical reactions, storing electrical or thermal energy as chemical energy during the charging phase, and releasing heat energy through reverse reactions to meet the diversified needs of heating, industrial steam, etc. This technology not only realizes efficient conversion of energy, but also meets the cross-seasonal or even cross-year energy storage needs, opening up new ways for stable supply and efficient use of new energy.

[0004] However, the existing technology has the following shortcomings:

[0005] (1) It cannot solve the problem of wasting new energy that cannot be connected to the grid and the problem of not having heat storage.

[0006] (2) It cannot avoid the large amount of heat loss generated by phase change heat storage and sensible heat storage during long-term storage.

[0007] (3) It cannot solve the demand for cross-seasonal energy storage and the problem of low equipment utilization rate during cross-seasonal heat storage. INVENTION CONTENTS

[0008] The technical problem to be solved by the utility model is to overcome the above technical defects, and to provide a cross-seasonal heat storage and release integrated system based on thermochemical heat storage material, which has reasonable process, wide application range, large processing capacity, high system integration, and high heat storage efficiency.

[0009] In order to solve the above problems, the technical scheme of the utility model is: a cross-season heat storage and release integrated system based on thermochemical heat storage material, comprising: a heat storage reactant bin, a reactor, a heater, a solid product cooler, a heat storage solid product bin, a heat exchanger, an air blower, a gas product storage tank, a valve, a blower, a controllable three-way valve, a partitioned heating surface and a separator;

[0010] The heat storage reactant bin is used for storing heat storage material;

[0011] The reactor is connected with the heat storage reactant bin, the reactor can receive the heat storage material stored in the heat storage reactant bin, and the reactor is internally provided with a partitioned heating surface;

[0012] The heater is connected with the reactor through the controllable three-way valve, the controllable three-way valve is used for connecting the reactor, the heater and a heat user, the heater can convert green electricity into heat energy in the heat storage stage, the heat energy is sent into the reactor through flowable working medium and is transmitted to the reactant through the partitioned heating surface in the reactor, and the reactant is decomposed into solid product and gas product by heat;

[0013] The solid product cooler is connected with the reactor, and the solid product cooler is used for absorbing the sensible heat of the high-temperature solid product decomposed by the reactant;

[0014] The heat storage solid product bin is connected with the solid product cooler and the reactor, the heat storage solid product bin is used for storing the solid product recovered by sensible heat in the heat storage stage, and the heat storage solid product bin is used for filling the reactant into the reactor in the heat release stage;

[0015] The heat exchanger is connected with the reactor through the separator, the separator excludes the high-temperature solid product and separates the high-temperature gas product into the heat exchanger, and the heat exchanger is used for absorbing the sensible heat of the high-temperature gas product separated by the separator;

[0016] The gas product storage tank is connected with the heat exchanger through the air blower, the gas product in the heat exchanger is introduced into the gas product storage tank through the air blower, and the gas product storage tank is provided with a valve on one side;

[0017] The blower is connected between the valve and the reactor, and the blower is used for sending the reactant working medium in the gas product storage tank into the reactor in the heat release stage.

[0018] Further, the heat storage material stored in the heat storage reactant bin is thermochemical heat storage material, and cross-season heat storage can be realized;

[0019] For the metal oxide series in the heat storage material, the reactant in the heat storage stage is metal oxide, including but not limited to BaO2, Co3O4, CuO, Mn2O3, etc., the solid product refers to BaO, CoO, Cu2O, Mn3O4, etc., the gas product refers to oxygen (O2), the heat release reaction is the reversible reaction of the heat storage reaction, the solid reactant includes but is not limited to BaO, CoO, Cu2O, Mn3O4, etc., and the solid product refers to BaO2, Co3O4, CuO, Mn2O3, etc.;

[0020] For the metal hydroxide series in the heat storage material, the reactant in the heat storage stage is metal hydroxide, including but not limited to Mg(OH)2, Ca(OH)2, Fe(OH)2, etc., the solid product refers to MgO, CaO, Fe2O3, etc., the gas product refers to water vapor (H2O) which can be stored in the form of liquid water after heat exchange, the heat release reaction is the reversible reaction of the heat storage reaction, the solid reactant includes but is not limited to MgO, CaO, Fe2O3, etc., and H2O can be in the form of liquid water or water vapor, and the solid product refers to Mg(OH)2, Ca(OH)2, Fe(OH)2, etc.;

[0021] For the carbonate series in the heat storage material, the reactant in the heat storage stage is carbonate, including but not limited to MgCO3, CaCO3, SrCO3, etc., the solid product refers to MgO, CaO, SrO, etc., the gas product refers to carbon dioxide (CO2), the heat release reaction is the reversible reaction of the heat storage reaction, and the solid reactant includes but is not limited to MgO, CaO, SrO, etc., and the solid product refers to MgCO3, CaCO3, SrCO3, etc.

[0022] Further, the reactor 2 can be used as a heat storage reactor or a heat release reactor, and the reactor forms include but are not limited to fixed bed, moving bed, fluidized bed, etc.

[0023] Further, the reactor is provided with a partition type heating surface for transferring heat from the heat storage stage to the reactant, while avoiding mutual pollution between the reactant and the heat storage medium, and the working medium in the partition type heating surface includes but is not limited to hot air, hot water, water vapor, CO2, heat conducting oil, etc.

[0024] The reactor is provided with an inlet and an outlet of the reaction working medium at the same time, which facilitates the recovery and reuse of the product in the heat storage stage and the entry of the reaction working medium in the heat release stage and the recovery of the excess working medium.

[0025] Further, in the electric heating mode, the heating mode includes but is not limited to electrode heating, resistance heating, electromagnetic heating, etc., and the heater includes but is not limited to electric heat conducting oil electric heater, electric air heater, etc.

[0026] Further, the solid product cooler can be a roller cooler, a fluidized bed cooler, a grate cooler, etc.

[0027] Further, the separator can be a membrane filter, a cyclone separator, a settling chamber, etc.

[0028] Further, the controllable three-way valve is disconnected from the heat user in the heat storage stage and is disconnected from the heater in the heat release stage.

[0029] Further, when the reactant in the heat storage stage is a metal hydroxide, the gas product is water vapor, at this time, the induced draft fan can be replaced by a water pump and the gas product storage tank can be replaced by a water tank, and the latent heat and sensible heat of the water vapor are recovered by the heat exchanger and then sent into the water tank by the water pump for storage.

[0030] The utility model has the advantages compared with the prior art:

[0031] (1) The electric heating scheme of the system adopts electric heating (for example, electric air heater or high-temperature heat-conducting oil) to convert electric energy into heat energy of heat transfer working medium to provide heat for the thermochemical heat storage material, and industrial waste heat can also be directly used to promote the thermochemical heat storage material to have a thermal decomposition reaction, so that heat energy is converted into chemical energy. The system can improve the utilization rate of new energy power generation, solve the problem that new energy cannot be connected to the grid and can only be wasted, and solve the problem that there is no heat energy storage.

[0032] (2) The thermochemical heat storage material is a medium-high temperature (reaction temperature greater than 300 DEG C) thermochemical heat storage material, and since the energy is stored in the form of chemical energy, the problem of large heat loss during long-time storage of phase change heat storage and sensible heat storage can be solved. At the same time, the heat release temperature is high, and high-quality heat can be provided.

[0033] (3) The application can solve the demand for cross-seasonal energy storage. The new system is an integrated system for heat storage and heat release, and the reactor can meet the technical requirements of heat storage reaction and heat release reaction. The new system can solve the problems of traditional thermochemical heat storage systems, such as complexity and low energy utilization rate. The new system has high equipment utilization rate and low investment cost. BRIEF DESCRIPTION OF DRAWINGS

[0034] Fig. 1 is a system schematic diagram of a heat storage process of a cross-seasonal heat storage and release integrated system based on thermochemical heat storage material.

[0035] Fig. 2 is a system schematic diagram of a heat release process of a cross-seasonal heat storage and release integrated system based on thermochemical heat storage material.

[0036] As shown in the figure: 1. Thermal storage reaction material silo; 2. Reactor; 3. Heater; 4. Solid product cooler; 5. Thermal storage solid product silo; 6. Heat exchanger; 7. Exhaust fan; 8. Gas product storage tank; 9. Valve; 10. Blower; 11. Controllable three-way valve; 12. Indirect heating surface; 13. Separator. Detailed Implementation

[0037] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0039] Example 1:

[0040] like Figs. 1-2 As shown, a cross-seasonal integrated heat storage and release system based on thermochemical heat storage materials includes: a heat storage reaction material silo 1, a reactor 2, a heater 3, a solid product cooler 4, a heat storage solid product silo 5, a heat exchanger 6, an induced draft fan 7, a gas product storage tank 8, a valve 9, a blower 10, a controllable three-way valve 11, a partitioned heating surface 12, and a separator 13.

[0041] The thermal storage reaction material silo 1 is used to store thermal storage materials. The thermal storage materials stored in the thermal storage reaction material silo 1 are thermochemical thermal storage materials, which can realize cross-seasonal thermal storage.

[0042] For metal oxide series in thermal storage materials, the reactants in the thermal storage stage are metal oxides, including but not limited to BaO2, Co3O4, CuO, Mn2O3, etc., the solid products are BaO, CoO, Cu2O, Mn3O4, etc., the gaseous products are oxygen (O2), the heat release reaction is a reversible reaction of thermal storage reaction, the solid reactants are including but not limited to BaO, CoO, Cu2O, Mn3O4, etc., the solid products are BaO2, Co3O4, CuO, Mn2O3, etc.;

[0043] For the metal hydroxide series in the heat storage material, the reactant in the heat storage stage is metal hydroxide, including but not limited to Mg(OH)2, Ca(OH)2, Fe(OH)2, etc., the solid product refers to MgO, CaO, Fe2O3, etc., the gaseous product refers to water vapor (H2O), which can be stored in the form of liquid water after heat exchange, the heat release reaction is the reversible reaction of the heat storage reaction, the solid reactant includes but is not limited to MgO, CaO, Fe2O3, etc., H2O can be in the form of liquid water or water vapor, and the solid product refers to Mg(OH)2, Ca(OH)2, Fe(OH)2, etc.

[0044] For the carbonate series in the heat storage material, the reactant in the heat storage stage is carbonate, including but not limited to MgCO3, CaCO3, SrCO3, etc., the solid product refers to MgO, CaO, SrO, etc., the gaseous product refers to carbon dioxide (CO2), the heat release reaction is the reversible reaction of the heat storage reaction, the solid reactant includes but is not limited to MgO, CaO, SrO, etc., and the solid product refers to MgCO3, CaCO3, SrCO3, etc.

[0045] The reactor 2 is connected to the heat storage reactant bin 1, the reactor 2 can receive the heat storage material stored in the heat storage reactant bin 1, the reactor 2 is internally provided with a partition wall type heating surface 12, the partition wall type heating surface 12 provided in the reactor 2 is used for the heat storage stage to transfer heat from the heat storage material to the reactant, while avoiding mutual contamination between the reactant and the heat storage material, the working medium in the partition wall type heating surface 12 includes but is not limited to hot air, hot water, water vapor, CO2, heat conducting oil, etc., the reactor 2 can be used as a heat storage reactor and also as a heat release reactor, the reactor 2 can be in the form of a fixed bed, a moving bed, a fluidized bed, etc., the reactor 2 is simultaneously provided with an inlet and an outlet of the reaction working medium, which facilitates the recycling and reuse of the product in the heat storage stage and the entry of the reaction working medium and the recycling of the excess working medium in the heat release stage.

[0046] The heater 3 is connected to the reactor 2 through a controllable three-way valve 11, the controllable three-way valve 11 is used for connecting the reactor 2, the heater 3 and the heat user, the heater 3 can convert green electricity into heat energy in the heat storage stage, the heat energy is sent into the reactor 2 through the flowable working medium and is transferred to the reactant through the partition wall type heating surface 12 in the reactor 2, the reactant is decomposed into solid products and gaseous products, the heater 3 includes but is not limited to an electric heat conducting oil electric heater, an electric air heater, etc. in the electric heating mode, the controllable three-way valve 11 is disconnected from the heat user in the heat storage stage and is disconnected from the heater 3 in the heat release stage.

[0047] The solid product cooler 4 is connected to the reactor 2, the solid product cooler 4 is used for absorbing the sensible heat of the high-temperature solid product decomposed from the reactant, and the solid product cooler 4 can be in the form of a drum cooler, a fluidized bed cooler, a grate cooler, etc.

[0048] The heat storage solid product bin 5 is connected with the solid product cooler 4 and the reactor 2, and is used for storing the solid product recovered by the sensible heat during the heat storage stage, and is used for filling the reactant into the reactor 2 during the heat release stage;

[0049] The heat exchanger 6 is connected with the reactor 2 through the separator 13, the separator 13 removes the high-temperature solid product and separates the high-temperature gas product to be sent into the heat exchanger 6, the heat exchanger 6 is used for absorbing the sensible heat of the high-temperature gas product separated by the separator 13, and the separator 13 can be a membrane filter, a cyclone separator, a settling chamber or the like.

[0050] The gas product storage tank 8 is connected with the heat exchanger 6 through the induced draft fan 7, the gas product in the heat exchanger 6 is introduced into the gas product storage tank 8 through the induced draft fan 7, and the gas product storage tank 8 is provided with the valve 9 on one side;

[0051] The air blower 10 is connected between the valve 9 and the reactor 2, and is used for sending the reaction working medium in the gas product storage tank 8 into the reactor 2 during the heat release stage.

[0052] When the reactant during the heat storage stage is a metal hydroxide, the gas product is water vapor, at this time, the induced draft fan 7 can be replaced by a water pump, and the gas product storage tank 8 can be replaced by a water tank, and the latent heat and the sensible heat of the water vapor are recovered by the heat exchanger 6 and then sent into the water tank by the water pump for storage.

[0053] Reference Fig. 1, the heat storage material is Ca(OH)2 / CaO, and the system is applied to a new energy green electricity consumption scene. In the heat storage stage, Ca(OH)2 is first filled into a moving reaction bed, a continuous discharging device is arranged at the lower part of the moving reaction bed, Ca(OH)2 slowly moves downward in the reactor under the action of gravity, and finally is discharged from the reactor. Then, the electric air heater is used to heat air to 500-600 DEG C by using green electricity, and the air is sent into the reactor 2, Ca(OH)2 is heated by the partition wall heating surface 12 in the reactor, and Ca(OH)2 is decomposed into CaO and water vapor. At this time, the controllable three-way valve 11 is cut off from the heat user, the high-temperature air after heat exchange is reduced to 200-250 DEG C, and returns to the heater 3 to continue to be heated to realize cyclic utilization. The reaction product CaO has a temperature of 300-400 DEG C, in order not to waste the sensible heat, the CaO is cooled to below 150 DEG C by using a roller cooler, and finally is stored in the heat storage solid product bin 5 as a reaction material for heat release reaction. The water vapor is discharged from the upper part of the moving reaction bed, if powder Ca(OH)2 is used, a gas-solid separator such as a cyclone separator or a settling chamber needs to be arranged at the upper part of the moving bed. The discharged water vapor is separated from excess CaO and Ca(OH)2 by the separator 13, and then enters the heat exchanger 6 to recover the latent heat and the sensible heat to a temperature of below 50 DEG C, and is pumped into a water tank by a water pump, at this time, the valve 9 is closed.

[0054] With reference to Fig. 2 In the heat release stage, CaO is first filled into the reactor 2. Then, the valve 9 is opened, liquid water is sprayed into the reactor through multiple nozzles arranged in the middle part of the moving reaction bed by the water pump 10, and the liquid water reacts with CaO to release heat. At this time, the liquid water is heated into water vapor and discharged from the upper part of the moving reaction bed, the water vapor is separated from excess CaO and Ca(OH)2 by the separator 13, and then enters the heat exchanger 6 to recover the latent heat and the sensible heat to a temperature of below 50 DEG C, and is pumped into a water tank by a water pump, to realize cyclic utilization. The heat exchanger 6 uses 20 DEG C cold water to heat to 40-50 DEG C after heat exchange, and continues to be used as a cooling medium to enter the roller cooler. The heat is transferred to the water in the partition wall heating surface 12, the water is heated from 40-50 DEG C to 80-90 DEG C, and then is delivered to the heat user, at this time, the controllable three-way valve is cut off from the electric heater. The reaction product Ca(OH)2 has a temperature of 400-500 DEG C, in order not to waste the sensible heat, the CaO is cooled to below 100 DEG C by using a roller cooler 4, and finally is stored in the heat storage reaction material bin 1 as a reaction material for heat storage reaction. The roller cooler uses 40-50 DEG C cold water to heat to 70-80 DEG C after heat exchange, and then enters the heat network to supply heat to the heat user.

[0055] Example 2:

[0056] With reference to Fig. 1, the heat storage material is MgCO3 / MgO, and the system is used in a gas-steam combined cycle power generation system. In the heat storage stage, MgCO3 is first filled into the moving reaction bed, a continuous discharge device is arranged at the lower part of the moving reaction bed, MgCO3 slowly moves downward in the reactor under the action of gravity, and is finally discharged from the reactor. Then, the heat exchange medium in the heater 3 is heated to 400-500 DEG C by using the 500-600 DEG C hot flue gas generated by the gas turbine, and is sent into the reactor 2, MgCO3 is heated by the intermediate wall heating surface 12 in the reactor, and is decomposed into MgO and CO2. At this time, the controllable three-way valve 11 is cut off from the heat user, and the reacted heat exchange medium returns to the air heater to continue to be heated to realize cyclic utilization. The reaction product MgO has a temperature of 300-400 DEG C, in order not to waste the sensible heat, the MgO is cooled to below 150 DEG C by using a drum cooler, and is finally stored in the heat storage solid product bin 5 as a reactant for the heat releasing reaction. CO2 is discharged from the reserved outlet at the upper part of the moving bed, and a cyclone separator needs to be arranged at the upper part of the moving bed to recover MgCO3 particles carried. The discharged CO2 enters the heat exchanger 6 to reduce the temperature to below 50 DEG C, and is sent into the gas tank 8 by the induced draft fan 7, at this time, the valve 9 is in the closed state. The recovered heat is sent to the nearby heat user.

[0057] Referring to Fig. 2 In the heat releasing stage, MgO is first filled into the reactor 2. Then, the valve 9 is opened, CO2 is sprayed into the reactor through the multiple nozzles arranged in the middle part of the moving reaction bed by the air blower 10, and the CO2 reacts with MgO to release heat. CO2 is discharged from the reserved outlet at the upper part of the moving bed, and after the separation of excess MgO and MgCO3 by the separator 13, the CO2 enters the heat exchanger 6 to reduce the temperature to below 50 DEG C, and is sent into the gas tank 8 by the induced draft fan 7 to realize cyclic utilization. The heat exchanger 6 uses steam turbine unit feed water as cooling water, and after heat exchange, the cooling water is heated to 30-40 DEG C, and is continuously sent into the drum cooler as cooling medium. After being heated to 60-70 DEG C in the drum cooler, the cooling medium is sent into the intermediate wall heating surface 12, and is finally returned to the regenerative system of the steam turbine unit. At this time, the controllable three-way valve is cut off from the electric heater. The reacted MgCO3 has a temperature of 400-500 DEG C, in order not to waste the sensible heat, the MgO is cooled to below 100 DEG C by using a drum cooler, and is finally stored in the heat storage reactant bin 1 as a reactant for the heat storage reaction.

[0058] The electrical components appearing in the text are all connected with the main controller and 220V mains, and the main controller can be a computer or other conventional known device that can be controlled, and the detailed description of the known functions and known components is omitted in the specific embodiment of the present disclosure. In order to ensure the compatibility of the device, the operation means adopted is consistent with the parameters of the market appliances.

[0059] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An integrated system for storing and releasing heat across seasons based on thermo-chemical heat storage material, characterized in that, The application relates to a heat storage and release device for a heat user, which comprises a heat storage reactant bin (1), a reactor (2), a heater (3), a solid product cooler (4), a heat storage solid product bin (5), a heat exchanger (6), an air blower (7), a gas product storage tank (8), a valve (9), an air feeder (10), a controllable three-way valve (11), a partitioned heating surface (12) and a separator (13). The heat storage reactant bin (1) is used for storing heat storage materials. The reactor (2) is connected with the heat storage reactant bin (1), the reactor (2) can receive the heat storage materials stored in the heat storage reactant bin (1), and the reactor (2) is internally provided with the partitioned heating surface (12). The heater (3) is connected with the reactor (2) through the controllable three-way valve (11), the controllable three-way valve (11) is used for connecting the reactor (2), the heater (3) and the heat user, the heater (3) can convert green electricity into heat energy in the heat storage stage, the heat energy is sent into the reactor (2) through a flowable working medium, and the heat energy is transmitted to reactants through the partitioned heating surface (12) in the reactor (2) to decompose the reactants into solid products and gas products. The solid product cooler (4) is connected with the reactor (2), and the solid product cooler (4) is used for absorbing the sensible heat of the high-temperature solid products decomposed by the reactants. The heat storage solid product bin (5) is connected with the solid product cooler (4) and the reactor (2), the heat storage solid product bin (5) is used for storing the solid products recovered in the heat storage stage, and the heat storage solid product bin (5) is used for filling the reactants into the reactor (2) in the heat release stage. The heat exchanger (6) is connected with the reactor (2) through the separator (13), the separator (13) removes the high-temperature solid products and separates the high-temperature gas products to be sent into the heat exchanger (6), and the heat exchanger (6) is used for absorbing the sensible heat of the high-temperature gas products separated by the separator (13). The gas product storage tank (8) is connected with the heat exchanger (6) through the air blower (7), the gas products in the heat exchanger (6) are introduced into the gas product storage tank (8) through the air blower (7), and one side of the gas product storage tank (8) is provided with the valve (9). The air feeder (10) is connected between the valve (9) and the reactor (2), and the air feeder (10) is used for sending the reaction working medium in the gas product storage tank (8) into the reactor (2) in the heat release stage. The heat storage materials stored in the heat storage reactant bin (1) are thermochemical heat storage materials, and the heat storage materials can realize cross-season heat storage.

2. The integrated system for cross-seasonal heat storage and release based on thermo-chemical heat storage material according to claim 1, characterized in that: For the metal oxide series of heat storage materials, the reactants in the heat storage stage are metal oxides, including but not limited to BaO2, Co3O4, CuO or Mn2O3, the solid products refer to BaO, CoO, Cu2O or Mn3O4, the gas products refer to oxygen (O2), the heat release reaction is a reversible reaction of the heat storage reaction, the solid reactants include but are not limited to BaO, CoO, Cu2O or Mn3O4, and the solid products refer to BaO2, Co3O4, CuO or Mn2O3. ​ For the metal hydroxide series of the heat storage material, the reactant of the heat storage stage is metal hydroxide, including but not limited to Mg(OH)2, Ca(OH)2 or Fe(OH)2, the solid product refers to MgO, CaO or Fe2O3, the gaseous product refers to water vapor (H2O), which can be stored in the form of liquid water after heat exchange, the heat releasing reaction is the reversible reaction of the heat storage reaction, the solid reactant includes but is not limited to MgO, CaO or Fe2O3, H2O can be in the form of liquid water or water vapor, and the solid product refers to Mg(OH)2, Ca(OH)2 or Fe(OH)2; For the carbonate series of the heat storage material, the reactant of the heat storage stage is carbonate, including but not limited to MgCO3, CaCO3 or SrCO3, the solid product refers to MgO, CaO or SrO, the gaseous product refers to carbon dioxide (CO2), the heat releasing reaction is the reversible reaction of the heat storage reaction, and the solid reactant includes but is not limited to MgO, CaO or SrO, and the solid product refers to MgCO3, CaCO3 or SrCO3.

3. The integrated system for seasonal heat storage and release based on thermo-chemical heat storage material according to claim 1, characterized in that: The reactor (2) can be used as a heat storage reactor or a heat releasing reactor, and the reactor (2) includes but is not limited to a fixed bed, a moving bed or a fluidized bed.

4. The integrated system for cross-seasonal heat storage and release based on thermo-chemical heat storage material according to claim 1, characterized in that: The reactor (2) is provided with a partition type heating surface (12) for transferring heat from the heat storage stage to the reactant, while avoiding mutual contamination of the reactant and the heat storage medium, and the working medium in the partition type heating surface (12) includes but is not limited to hot air, hot water, water vapor, CO2 or heat conducting oil. The reactor (2) is provided with an inlet and an outlet of the reaction working medium, which facilitates the recycling and reuse of the product of the heat storage stage and the entry of the reaction working medium of the heat releasing stage and the recycling of the excess working medium.

5. The integrated system for seasonal heat storage and release based on thermo-chemical heat storage material according to claim 1, characterized in that: In the heating mode of using electricity, the heating mode includes but is not limited to electrode heating, resistance heating or electromagnetic heating, and the heater (3) includes but is not limited to an electric heat conducting oil electric heater or an electric air heater.

6. The integrated system for cross-seasonal heat storage and release based on thermo-chemical heat storage material according to claim 1, characterized in that: The solid product cooler 4 can be a drum cooler, a fluidized bed cooler or a grate cooler.

7. The integrated system for cross-seasonal heat storage and release based on thermo-chemical heat storage material according to claim 1, characterized in that: The separator (13) can be a membrane filter, a cyclone separator or a settling chamber.

8. The integrated system for cross-seasonal heat storage and release based on thermo-chemical heat storage material according to claim 1, characterized in that: The controllable three-way valve (11) is disconnected from the heat user in the heat storage stage and disconnected from the heater (3) in the heat releasing stage.

9. The integrated system for seasonal heat storage and release based on thermo-chemical heat storage material according to claim 1, characterized in that: When the reactant of the heat storage stage is metal hydroxide, the gaseous product is water vapor, at this time, the induced draft fan (7) can be replaced by a water pump, and the gaseous product tank (8) can be replaced by a water tank, and the latent heat and sensible heat of the water vapor are recovered through the heat exchanger (6) and then sent into the water tank for storage through the water pump.

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