CN207204051U - A kind of fixed-bed type high temperature heat mutually changes energy storage reactor with chemical energy - Google Patents

Abstract

The utility model discloses a fixed-bed type high-temperature thermal energy and chemical energy mutual conversion energy storage reactor, which mainly includes a heat transfer fluid H heat exchange tube, a reactant particle bed layer and a water delivery W heat exchange tube. The heat storage process is that the high-temperature heat transfer fluid is transported by the H heat exchange tube, and when it flows through the heat transfer pipe section between the reactant particle bed, the reactant particle bed is heated to make the metal hydroxide in the bed generate The dehydration decomposition reaction realizes the conversion of high-temperature heat energy into chemical energy and stores it in the form of metal oxides. The heat release process is to input water vapor into the reactor from the water vapor inlet, and distribute the steam evenly through the steam distributor to adjust the pressure; the water vapor and the metal oxide in the reactant particle bed undergo an exothermic hydration reaction, The generated heat heats and vaporizes the water in the W heat exchange tubes into water vapor, and transports the water vapor to the steam turbine for power generation or for other purposes. The utility model has the advantages of high energy storage density, long storage period and efficient and stable storage process.

Description

A fixed-bed high-temperature thermal energy and chemical energy mutual conversion energy storage reactor

technical field

The utility model belongs to the technical field of high-temperature thermal energy storage, in particular to an energy storage reactor which adopts metal hydroxide as an energy storage medium and is capable of converting high-temperature thermal energy and chemical energy.

Background technique

Thermal energy storage technology is a key factor for improving the efficiency of concentrated high-temperature solar thermal power plants. Focused high-temperature solar thermal power generation converts solar thermal energy into electrical energy, and can realize continuous power generation by configuring a high-temperature (400-1000°C) thermal energy storage system. The main high-temperature heat storage methods are: sensible heat energy storage, latent heat energy storage and thermochemical energy storage.

Sensible heat energy storage refers to the storage of heat by changing the temperature of the energy storage medium, which can be divided into solid sensible heat energy storage, liquid sensible heat energy storage, and liquid-solid combined sensible heat energy storage. Sensible heat energy storage is low in cost and mature in technology, but it also has disadvantages such as large heat loss during long-term storage, low energy storage density, and a large heat storage device required, so it is not suitable for large-scale thermal power generation. Latent heat energy storage, also known as phase change energy storage, mainly stores and releases heat by absorbing or releasing heat when the energy storage material undergoes a phase change. The density of latent heat energy storage is higher than sensible heat, and the volume of energy storage system is smaller than sensible heat. However, latent heat energy storage has disadvantages such as low thermal conductivity, low heat storage temperature, large heat loss, and limited energy storage period.

Thermochemical energy storage is mainly based on a reversible thermochemical reaction, such as C+ΔH=A+B, in which the energy storage material C absorbs heat (such as solar heat) and decomposes into A and B, and A and B can be independently store it up. When heat supply is needed, A and B are fully mixed, and an exothermic reaction occurs to generate C, releasing the stored chemical energy in the form of heat energy. Thermochemical energy storage has the characteristics of high energy storage density (100-500kW·h/m ³ ) and high heat generation temperature (up to 500°C). Realize long-term (24 hours to several months) energy storage without heat loss. Therefore, thermal energy storage using reversible chemical reactions is a very promising high-temperature energy storage technology.

Compared with other energy storage methods, thermochemical energy storage has the advantages of high energy storage density, long-term storage without heat loss at ambient temperature, and suitable for long-distance transportation. Provides a very promising method. Thermochemical energy storage can overcome the intermittent nature of solar energy and achieve continuous heat supply. It is especially suitable for peak and valley load regulation of power plants, and releases heat energy during peak power generation to drive steam turbines to generate electricity.

At present, more than 70 thermochemical energy storage reactions have been studied, but there are not many ideal reaction systems. Typical thermochemical energy storage systems include thermal decomposition of metal hydroxides, mainly Ca(OH) ₂ /CaO+H ₂ O or Mg(OH) ₂ /MgO+H ₂ O. In addition, there are decomposition of ammonia, decomposition of carbonates, catalytic reforming of methane-carbon dioxide, thermal decomposition of ammonium salts, hydrogenation and dehydrogenation of organic substances, etc. In order to make the thermochemical energy storage system more efficient and stable, in addition to the reasonable selection of energy storage materials, the design and research of energy storage devices is also a key technology that needs to be solved urgently. For the design of the energy storage reactor, the characteristics of the reaction bed must be clarified to ensure the heat conduction and mass transfer stability of the gas, solid and other reactant media in the reactor, which can effectively control the occurrence of energy storage/release reactions and realize storage-release. The best operating efficiency can be cycled.

Utility model content

The purpose of this utility model is to avoid the deficiencies in the above-mentioned background, and a fixed-bed type high-temperature thermal energy and chemical energy mutual conversion energy storage reactor is designed to effectively convert solar thermal energy or other high-temperature thermal energy (industrial waste heat, waste heat) It is stored in the form of chemical energy through a reversible chemical reaction. When high-temperature heat energy is needed, the chemical energy is converted into heat energy through a reverse exothermic reaction and released to achieve efficient energy storage and utilization.

A fixed-bed type high-temperature thermal energy and chemical energy mutual conversion energy storage reactor, which includes: including a shell, an insulation layer, a bed of reactant particles, a steam distributor, a water outlet, a water vapor inlet, a water vapor outlet, and a water pipe That is, W heat exchange tube, W heat exchange tube inlet, heat transfer fluid delivery tube namely H heat exchange tube, W heat exchange tube outlet, H heat exchange tube inlet, H heat exchange tube outlet;

The insulation layer is coated on the outside of the shell, and the inside of the shell is provided with the H heat exchange tube, the W heat exchange tube, the reactant particle bed, the steam distributor and the water vapor pressure regulator; the H heat exchange tube and the W heat exchange tube The heat transfer section of the tube is respectively distributed on both sides of the reactant particle bed and closely attached to the two larger sides of the reactant particle bed, in the form of H heat exchange tube-particle bed-W heat exchange tube-particle bed Layer-H heat exchange tubes are arranged in sequence, and the reactant particle bed can be provided with multiple layers, correspondingly forming multi-layer H heat exchange tube layers and multi-layer W heat exchange tube layers, H heat exchange tube layers and W heat exchange tube layers The tube layers are arranged staggeredly, and the H heat exchange tube layer is perpendicular to the W heat exchange tube layer pipeline direction; the H heat exchange tube inlet and H heat exchange tube outlet are located on one side of the shell, and the W heat exchange tube inlet and W heat exchange tube The tube outlet is located on the other side of the housing;

The steam distributor is located at the bottom of the shell, the drain is located at the lower end of the bottom of the shell, the water vapor inlet is located at the bottom side of the shell and connected to the steam distributor; the water vapor outlet is located at the upper side of the shell;

The heat storage process is: the metal hydroxide in the reactant particle bed absorbs the heat input by the heat transfer fluid in the H heat exchange tube and undergoes a dehydration decomposition reaction to realize the conversion of heat energy into chemical energy, and the generated water vapor is discharged from the water vapor outlet; The heat release process is: from the steam inlet to the steam distributor at the bottom of the fixed-bed energy storage reactor, steam is distributed to distribute the steam; the metal oxide in the reactant particle bed and the water vapor undergo an exothermic reaction of hydration , the heat generated by the water absorption reaction in the W heat exchange tube is vaporized into water vapor, and the output water vapor is used for steam turbine power generation or other high-temperature occasions; the drain is used to discharge the condensed liquid water in the reactor; close to the bottom ( D) There are three square steels at the bottom of the W heat transfer pipe section, and both ends of the heat transfer section of the H heat exchange pipe except the bottom layer are supported by square steels, and the wedge-shaped brackets supporting the square steels are fixed inside the shell.

Further optimized, the reactant particle bed is closely attached to the H heat exchange tube and the W heat exchange tube to reduce heat transfer resistance.

Further optimized, the W heat exchange tube adopts a stainless steel metal tube with an equivalent diameter DN of 30-50 mm and a pressure bearing capacity PN of 20-30 MPa, and the heat transfer section of the W heat exchange tube located on the same layer is connected by a U-shaped joint And it is arranged in a continuous U shape, and the center distance L1 between two adjacent heat exchange tubes is 45-80mm; the gap between the tubes is filled with honeycomb stainless steel mesh, which is used to improve the thermal conductivity between the reactant particle bed and the W heat exchange tube, and as a passage for water vapor.

Further optimized, the reactant particle bed is filled with metal hydroxide/oxide particles and wrapped by stainless steel mesh to prevent the reactant particles from falling off. The reactor can be used for both heat storage and heat release.

Further optimized, the bed of reactant particles inside the energy storage reactor is in the shape of a cuboid, and the reactant particles are doped with expanded graphite and SiO ₂ or Al ₂ O ₃ particles. SiO ₂ or Al ₂ O ₃ particles are used to ensure that the porosity between the reactant particles is 0.2-0.8 to increase the reaction fraction of the reactants in the particle bed; adding expanded graphite is to enhance the heat conduction inside the bed. The length and width of the reactant particle bed are determined according to the specific arrangement of the H heat exchange tubes and W heat exchange tubes, and the bed thickness L3 is set at 20-40 mm.

Further optimized, the H heat exchange tube adopts a stainless steel metal tube with an equivalent diameter of DN50-70mm and a pressure-bearing capacity of PN1.5-2.5MPa. There are 4 heat transfer tube sections in each layer, and the heat transfer tube sections between layers are S There is a gap between adjacent heat transfer tube sections in each layer and the center distance L2 is 90-120mm. The gap between the heat transfer tubes is filled with honeycomb stainless steel mesh, which is used as a channel for water vapor to enter and exit and a carrier for heat conduction.

Further optimized, the inlet pipe of the H heat exchange tube is connected to the inlet of the H heat exchange tube, the outlet pipe of the H heat exchange tube is connected to the outlet of the H heat exchange tube; the inlet pipe of the H heat exchange tube is adjacent to the outlet pipe to ensure the reaction All parts of the particle bed are heated at a uniform temperature.

The steam outlet is arranged on the upper part of the side of the casing, and the steam inlet is arranged on the lower part of the side of the casing; the drain is arranged on the bottom of the casing, and is controlled by a valve to facilitate the discharge of liquid water produced by partial steam condensation.

Further optimized, the pressure bearing capacity of the shell is 0.2-0.4 MPa, and a pressure gauge is installed on the upper part, and the pressure of the water vapor inside the reactor is monitored through the pressure gauge. The steam pressure in the reactor is adjusted by the steam pressure regulator to control the reaction rate and reaction temperature of the chemical reaction.

Compared with the prior art, the utility model has the following advantages:

1. It can make full use of solar thermal energy to drive reversible chemical reactions, and realize long-term, efficient and stable storage of solar thermal energy in the form of chemical energy without heat loss. When heat energy is needed, high-grade heat energy can be provided by exothermic reaction, and the reaction temperature can be controlled by adjusting the water vapor pressure.

2. The heat transfer sections of the W heat exchange tubes at the same level between the reaction particle beds adopt a U-shaped connection, and the heat transfer sections of the adjacent layers of the H heat exchange tubes are connected in an S-shape, and there are honeycomb-shaped connections between the tubes. Filled with stainless steel mesh to enhance heat transfer and improve heat conduction efficiency.

3. According to the needs, the reactor can be modularized and combined to meet the needs of thermal power generation with different powers. The operation is simple, the installation is convenient, and it is convenient for future maintenance and cleaning.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a three-dimensional diagram of the connection of heat transfer pipe sections inside the shell and the particle bed of the utility model.

Fig. 3 is an interior front sectional view of the utility model. Fig. 4 is the internal left view sectional view of the utility model.

Fig. 5 is a top sectional view of the heat transfer section of layer A of the W heat exchange tube. Fig. 6 is a top sectional view of the B-layer heat transfer section of the W heat exchange tube.

Fig. 7 is a top sectional view of the heat transfer section of the C layer of the W heat exchange tube. Fig. 8 is a top sectional view of the heat transfer section of the D layer of the W heat exchange tube.

Fig. 9 is a top sectional view of the heat transfer section of layer a of the H heat exchange tube. Fig. 10 is a top sectional view of the heat transfer section of the b-layer of the H heat exchange tube.

Fig. 11 is a top sectional view of the heat transfer section of the c-layer of the H heat exchange tube.

In the drawings: 1-H heat exchange tube inlet; 2-H heat exchange tube outlet; 3-insulation layer; 4-granule bed; 5-honeycomb stainless steel mesh; 6-steam distributor; 7-drain outlet; 8 -water vapor inlet; 9-water vapor pressure regulator; 10-W heat exchange tube inlet; 11-W heat exchange tube; 12-H heat exchange tube; 13-W heat exchange tube outlet; 14-water vapor outlet; 15 -pressure gauge; 16-shell; 17-square steel; 18-wedge bracket.

Detailed ways

Below in conjunction with accompanying drawing, the structure of the utility model and concrete work process are described in detail, but the implementation and protection of the utility model are not limited thereto.

The installation parameters of some equipment and materials required for the implementation of the scheme are shown in Table 1.

Table 1

As shown in Figure 1, a fixed bed type high temperature heat energy and chemical energy mutual conversion energy storage reactor, including: H heat exchange tube inlet 1, H heat exchange tube outlet 2, insulation layer 3, reactant particle bed 4, honeycomb Stainless steel mesh 5, steam distributor 6, drain port 7, water vapor inlet 8, water vapor pressure regulator 9, W heat exchange tube inlet 10, W heat exchange tube 11, H heat exchange tube 12, W heat exchange tube outlet 13 , steam outlet 14, pressure gauge 15, housing 16. The shell 16 is covered with an insulating layer 3, and the shell 16 is provided with a heat transfer fluid delivery pipe (H heat exchange pipe), a water delivery pipe (W heat exchange pipe), a reactant particle bed 4, a steam distributor 6 and a steam Pressure regulator9. A reactant particle bed 4 is arranged between the H heat exchange tube 12 and the W heat exchange tube 11, and the water vapor outlet 14 is used for outputting water vapor generated by decomposition reaction during the heat storage process. The steam outlet 14 is arranged on the upper part of the side of the housing 16, the steam inlet 8 is arranged on the lower part of the side of the housing 16, and the steam distributor 6 is connected to the steam inlet 8 at the bottom end inside the reactor. The drain port 7 is arranged at the bottom of the casing 16 to facilitate the discharge of liquid water produced by the condensation of part of the steam. The pressure of the water vapor inside the reactor is monitored in real time with a pressure gauge 15, and the pressure is controlled by a water vapor pressure regulator 9.

As shown in Figure 2, Figure 3, and Figure 4, the inside of the energy storage reactor is a reactant particle bed 4 wrapped with stainless steel mesh, H heat exchange tube 12 and W heat exchange tube 11, and the H heat exchange tube exchanges heat with W The heat transfer sections of the tubes are respectively distributed on both sides of the reactant particle bed 4, and the H heat exchange tube layer is perpendicular to the W heat exchange tube layer pipeline direction; the reactant particle bed 4 wrapped with stainless steel mesh is located on the H heat exchange tube layer Honeycomb stainless steel mesh 5 is used to fill the gap between each heat transfer section of the W heat exchange tube and between the H heat exchange tube horizontal layer and the W heat exchange tube horizontal layer. There are three square steels arranged at the bottom of layer D next to the W heat exchange tubes, both ends of the a and b layers of the H heat exchange tubes 12 are supported by square steels 17, and the wedge-shaped brackets 18 supporting the square steels 17 are fixed on the shell 16.

As shown in Fig. 5, Fig. 6, Fig. 7 and Fig. 8, it is a top sectional view of the heat transfer section of the W heat exchange tubes A, B, C, and D layers inside the fixed-bed type high-temperature thermal energy and chemical energy mutual conversion energy storage reactor; The distribution of the heat transfer pipe sections in each layer is the same, and they are all arranged in a U shape. A, B, C, and D correspond to the direction of the W heat exchange tube 11 in each layer in Figure 2 and Figure 3 respectively, and W1 is the liquid water in the W heat exchange tube 11 Inlet, connect the heat transfer sections of the W heat exchange tubes of each layer with elbows and straight pipes, where W2 is connected with W3, W4 is connected with W5, W6 is connected with W7, and W8 is connected with the outlet 13 of the W heat exchange tube, that is, the W heat exchange tube The steam generated after the water in the heat pipe 11 is heated is output from the outlet 13 of the W heat exchange pipe.

As shown in Fig. 9, Fig. 10 and Fig. 11, it is a cross-sectional view of the heat transfer section of the H heat exchange tubes a, b, and c layers inside the fixed-bed type high-temperature heat energy and chemical energy mutual conversion energy storage reactor; it is located at the bottom (c Layer) of 4 H heat exchange tubes, the right ends of the two adjacent tubes (H32 and H33) in the middle are connected by a 90° elbow, and the right ends of the two outermost tubes (H31, H34) are connected by a 90° elbow; The left ends of the four H heat exchange tubes (H31, H32, H33, H34) on the bottom layer (c layer) are respectively connected to the left ends (H21, H22) of the four H heat exchange tubes on the middle layer (b layer) directly above with elbows , H23, H24), the right ends of the 4 H heat exchange tubes (H21, H22, H23, H24) in the middle layer (b layer) are respectively connected to the 4 H heat exchange tubes in the top layer (a layer) directly above with elbows The right end of (H11, H12, H13, H14); the four H heat exchange tubes located on the top layer (a layer), select one of the H heat exchange tubes (H14) on the side, and connect its left end with the adjacent H The left end of the heat exchange tube (H13) is connected with an elbow, and the left ends of the other two H heat exchange tubes (H11 and H12) are respectively connected to the H heat exchange tube inlet 1 and the H heat exchange tube outlet 2.

The specific working mode of this device is:

Heat storage process: the high-temperature heat transfer fluid flows from the inlet 1 of the H heat exchange tube into the heat transfer tube section of the H heat exchange tube in the fixed-bed energy storage reactor to heat the reactant particle bed 4, and the reactant particle bed 4 Metal hydroxides are thermally decomposed into metal oxides and water vapor to convert thermal energy into chemical energy and store them in the form of metal oxides. The generated water vapor passes through the gaps between the particles and the pores of the honeycomb stainless steel mesh 5 between the heat exchange tubes and is discharged from the steam outlet 14 to realize the separation of decomposition products.

Heat release process: Water vapor is introduced from the water vapor inlet 8 to the steam distributor 6 at the bottom of the fixed-bed energy storage reactor to distribute the steam; the pressure of the water vapor inside the reactor is monitored in real time through the pressure gauge 15; through the water vapor pressure The regulator 8 is used to adjust the steam pressure in the reactor to control the reaction rate and reaction temperature of the chemical reaction. The metal oxide in the reactant particle bed layer 4 undergoes a hydration exothermic reaction with water vapor. Water at normal temperature is input from the W heat exchange tube inlet 8, and the water in the W heat exchange tube absorbs the heat generated by the reaction to vaporize into water vapor, and the water vapor output from the W heat exchange tube outlet 13 is used for steam turbine power generation or other high-temperature occasions.

As mentioned above, the utility model can be better realized. The above-mentioned embodiments are only preferred embodiments of the utility model, and are not used to limit the scope of implementation of the utility model; that is, all equal changes made according to the contents of the utility model and modifications are all covered by the scope of protection required by the claims of the present utility model.

Claims (9)

1. a kind of fixed-bed type high temperature heat and chemical energy mutually change energy storage reactor, it is characterised in that including housing (16), Heat-insulation layer (3), reactant particle layers (4), steam distributor (6), discharge outlet (7), steam entry (8), steam outlet (14), water-supply-pipe is W heat exchanger tubes (11), W heat exchange tube inlets (10), heat-transfer fluid delivery pipe i.e. H heat exchanger tubes (12), W heat exchanger tubes Export (13), H heat exchange tube inlets (1), H heat transfer tube outlets (2)；

Heat-insulation layer (3) is coated on housing (16) outside, and housing (16) is internally provided with the H heat exchanger tubes (12), W heat exchanger tubes (11), reactant particle layers (4), steam distributor (6) and water vapor pressure draught control mechanism (9)；H heat exchanger tubes and W heat exchanger tubes Heat transfer segment is respectively distributed to the both sides of reactant particle layers (4) and closely against two larger side of reactant particle layers Face, arranged successively in a manner of H heat exchanger tubes-particle layers-W heat exchanger tubes-particle layers-H heat exchanger tubes, reactant particle layers (4) multilayer can be set, correspondingly form multi-layer H heat exchange tube layer and multilayer W heat exchange tube layer, H heat exchange tube layer and W heat exchange tube layer are interlocked Arrangement, and H heat exchange tube layer is vertical with W heat exchange tube layer pipelines direction；H heat exchange tube inlets (1), H heat transfer tube outlets (2) are located at housing (16) side, W heat exchange tube inlets (10), W heat transfer tube outlets (13) are located at the opposite side of housing (16)；

Steam distributor (6) is located at housing (16) inner bottom part, and discharge outlet (7) is located at housing (16) bottom lower end, steam entry (8) it is located at housing (16) bottom side and is connected with steam distributor (6)；Steam outlet (14) is located at housing (16) upper side Face；

Heat accumulation process is：Metal hydroxides in reactant particle layers (4) absorbs the interior heat-transfer fluid input of H heat exchanger tubes (12) Heat kinetics reaction occurs, realize conversion of the heat energy to chemical energy, caused vapor is arranged from steam outlet (14) Go out；Heat release process is：Steam distributor (6) from from steam entry (8) to fixed-bed type energy storage reactor bottom is passed through water steaming Gas, carry out the distribution of steam；The exothermic reaction that metal oxide in reactant particle layers (4) is hydrated with vapor, W Heat caused by water absorbing reaction in heat exchanger tube (11) is vaporizated into vapor, and the vapor of output is generated electricity for steam turbine or it He uses high temperature applicationss；Discharge outlet (7) is used for the aqueous water for discharging condensation in reactor；Against the bottom（D）W heat transfer pipeline sections Bottom is provided with three square steel (17), and there is square steel (17) support at other each layer heat transfer segment both ends of the H heat exchanger tubes in addition to the bottom, It is internal that the wedge-shaped support (18) of support square steel is fixed on device housing (16).

2. a kind of fixed-bed type high temperature heat according to claim 1 mutually changes energy storage reactor with chemical energy, it is special Sign is that closely patch connects the reactant particle layers (4) with H heat exchanger tubes (12), W heat exchanger tubes (11) respectively.

3. a kind of fixed-bed type high temperature heat according to claim 1 mutually changes energy storage reactor with chemical energy, it is special Sign is that the W heat exchanger tubes (11) use equivalent diameter DN as 30~50mm, and bearing capacity PN is 20~30MPa stainless steel Metal tube, connected positioned at the heat transfer segment part of the W heat exchanger tubes (11) of same layer with U-joint and be in continuous U-shaped arrangement, adjacent two The tube hub spacing L1 that exchanges heat is 45 ~ 80mm；Space is filled with cellular stainless (steel) wire (5) between pipe, reacts composition granule for improving Heat conductivility between bed (4) and W heat exchanger tubes, and as the Vomitory of vapor.

4. a kind of fixed-bed type high temperature heat according to claim 1 mutually changes energy storage reactor with chemical energy, it is special Sign is that the reactant particle layers (4) are filled by metal hydroxides/oxide particle, and are wrapped up by stainless (steel) wire.

5. a kind of fixed-bed type high temperature heat according to claim 1 or 4 mutually changes energy storage reactor with chemical energy, its It is characterised by, the reactant particle layers (4) of energy storage inside reactor are cuboid, doped with expanded inside reaction composition granule Graphite, also mixed with SiO₂Or Al₂O₃Particle；SiO₂Or Al₂O₃Particle be used for ensureing to react porosity between composition granule 0.2 ~ 0.8；The thickness of bed layer L3 of reactant particle layers (4) is set as 20 ~ 40mm.

6. a kind of fixed-bed type high temperature heat and chemical energy according to claim 1,3 or 4 mutually change energy storage reactor, Characterized in that, the equivalent diameter DN of H heat exchanger tubes is 50~70mm, bearing capacity PN is 1.5~2.5MPa stainless steel metal Pipe, every layer of H heat exchanger tubes set 4 heat transfer pipeline sections, layer and layer heat transfer pipeline section it is S-shaped couple, adjacent heat-transfer pipe in each layer It is 90 ~ 120mm to remain with gap and center spacing L2 between section, and heat exchange ligament is filled with cellular stainless (steel) wire (5), as The carrier of access way and the heat conduction of vapor.

7. a kind of fixed-bed type high temperature heat according to claim 1 mutually changes energy storage reactor with chemical energy, it is special Sign is that the inlet tube (H11) of H heat exchanger tubes (12) is connected with H heat exchange tube inlets (1), the outlet of H heat exchanger tubes (12) (H12) it is connected with H heat transfer tube outlets (2)；The inlet tube (H11) of H heat exchanger tubes (12) is adjacent with outlet (H12).

8. a kind of fixed-bed type high temperature heat according to claim 1 mutually changes energy storage reactor with chemical energy, it is special Sign is that for the bearing capacity of housing (16) in 0.2~0.4MPa, top is provided with pressure gauge (15), is supervised by pressure gauge (15) Survey the pressure of inside reactor vapor.

9. a kind of fixed-bed type high temperature heat according to claim 1 mutually changes energy storage reactor with chemical energy, it is special Sign is that steam entry (8) is provided with water vapor pressure draught control mechanism (9), and reactor is adjusted by steam pressure regulator (9) Interior steam pressure, with the reaction rate and reaction temperature of control chemical reaction.