A high-temperature thermal storage hot air furnace system based on off-peak electricity storage

Abstract

The application provides a high-temperature heat storage hot blast furnace system based on valley electricity heat storage, which comprises a valley electricity heating device, a high-temperature particle heat storage tank, a fluidized bed heat exchanger, a gas-solid separator, a hot blast furnace device, a condensing heat exchanger and a low-temperature particle heat storage tank. The application has the beneficial effects that: during valley electricity, renewable valley electricity is used to power the valley electricity heating device to heat solid particles, and the heated solid particles are stored in the high-temperature particle heat storage tank; during non-valley electricity, the fluidized bed heat exchanger is used to release the heat energy stored by the solid particles to heat the working medium, and the working medium converts the stored heat energy back into electric energy, thereby improving the energy utilization efficiency; the fluidized wind of the fluidized bed heat exchanger is extracted in the form of hot blast and is sent into the built-in hot blast furnace heat exchanger of the hot blast furnace device, air is heated to become dry and hot blast, and the dry and hot blast is delivered to the working area by a fan, so that the purpose and requirement of heat output are achieved, and the hot blast furnace device forms hot blast, which directly contacts with materials to heat, dry or bake the materials.

Description

Technical Field

[0001] This invention relates to the field of thermal energy storage power generation equipment technology, and in particular to a high-temperature thermal energy storage hot air furnace system based on off-peak electricity thermal storage. Background Technology

[0002] With the vigorous development of the renewable energy industry, the proportion of wind and solar power generation in total electricity consumption has been increasing year by year, significantly improving the share of renewable energy and effectively improving the energy structure. However, as renewable energy projects are implemented at an accelerated pace, the problem of wind and solar curtailment urgently needs to be addressed in some regions, especially those with abundant renewable energy resources. The issue of energy integration has always been a difficult and bottleneck hindering the development of renewable energy.

[0003] Renewable energy sources are characterized by intermittency and volatility, which contradicts the grid's requirements for stability and reliability. Currently, my country's power supply structure is dominated by coal-fired power generation, while flexible and adjustable power supply types such as pumped storage and gas-fired power are relatively lacking. Insufficient peak-shaving capacity has become a key factor affecting the grid connection of renewable energy power generation.

[0004] There are currently no applications for waste heat recovery from convective air in existing solid particle thermal energy storage systems. Effectively combining it with hot air furnaces can significantly expand the industrial application scope of the entire high-temperature independent solid particle thermal energy storage system. Therefore, existing energy storage technologies require a low-cost, flexible, and industrially applicable independent high-temperature thermal energy storage hot air furnace system. Summary of the Invention

[0005] In view of this, in order to solve the problem of waste heat recovery and utilization of convective air in renewable energy storage and solid particle thermal storage systems, embodiments of the present invention provide a high-temperature thermal storage hot air furnace system based on off-peak electricity thermal storage.

[0006] Embodiments of the present invention provide a high-temperature thermal storage hot air furnace system based on off-peak electricity thermal storage, comprising:

[0007] A valley electricity heating device includes a first outer shell and a plurality of resistance heating plates disposed within the first outer shell. The resistance heating plates are arranged in parallel to each other, and the gap between any two adjacent resistance heating plates forms a flow channel for solid particles to flow through. When the solid particles flow through, they are heated to a predetermined temperature by each resistance heating plate.

[0008] A high-temperature particle heat storage tank is used to store solid particles heated by the off-peak electricity heating device using off-peak electricity.

[0009] A fluidized bed heat exchanger is connected to the high-temperature particle heat storage tank to receive solid particles output from the high-temperature particle heat storage tank during non-off-peak electricity hours and exchange heat with the solid particles to output the heated working medium.

[0010] A gas-solid separator, connected to the fluidized bed heat exchanger, separates the solid particles and fluidizing air output from the fluidized bed heat exchanger.

[0011] A hot blast stove device includes a hot blast stove body, a hot blast stove heat exchanger, a drying air pipeline, and a condensation waste heat recovery pipeline disposed within the hot blast stove body. The condensation waste heat recovery pipeline is disposed around the drying air pipeline. The drying air pipeline is connected to the hot blast stove heat exchanger. The hot blast stove heat exchanger is connected to the gas-solid separator through a first fluidizing air pipeline and to the fluidized bed heat exchanger through a second fluidizing air pipeline. A fluidized bed blower is provided on the second fluidizing air pipeline.

[0012] A condensing heat exchanger, which is connected to the hot air furnace heat exchanger and the condensing waste heat recovery pipeline respectively;

[0013] The system also includes a low-temperature particle heat storage tank connected to the gas-solid separator to store the solid particles separated by the gas-solid separator. The low-temperature particle heat storage tank is also connected to the off-peak electricity heating device to input the solid particles into the off-peak electricity heating device.

[0014] Furthermore, the condenser heat exchanger is connected to the hot air furnace heat exchanger via a drying air duct, and a drying air blower is provided on the drying air duct.

[0015] Furthermore, the condensing heat exchanger is provided with a condensing bypass, which is connected to the condensing waste heat recovery pipeline to form a circulation loop.

[0016] Furthermore, the fluidized bed heat exchanger includes a second outer shell and a fluid tube bundle disposed within the second outer shell. The second outer shell has a bottom air distribution plate, a top third particle outlet, and a bottom side third particle inlet.

[0017] Furthermore, the fluid tube bundle is serpentine, and the inlet and outlet ends of the fluid tube bundle are located on the same side of the second housing.

[0018] Furthermore, the high-temperature particle heat storage tank is provided with a second particle outlet at its lower end, and the low-temperature particle heat storage tank is provided with a fourth particle outlet at its lower end. Both the second particle outlet and the fourth particle outlet are funnel-shaped.

[0019] Furthermore, the outer wall of the high-temperature particle heat storage tank includes a refractory layer, an insulation layer, and a structural layer arranged sequentially from the inside to the outside.

[0020] Furthermore, it also includes a pellet feeder and a pellet conveyor, wherein the pellet feeder is disposed between the high-temperature pellet heat storage tank and the fluidized bed heat exchanger, and the pellet conveyor is disposed between the low-temperature pellet heat storage tank and the off-peak electricity heating device.

[0021] Furthermore, the resistance heating plate includes a straight ceramic shell and a heating element disposed within the ceramic shell.

[0022] Furthermore, the solid particles are one of ceramic particles, quartz sand, and industrial waste residue.

[0023] The beneficial effects of the technical solutions provided by the embodiments of the present invention are as follows:

[0024] 1. This invention discloses a high-temperature thermal energy storage hot air furnace system based on off-peak electricity storage. During off-peak electricity periods, renewable off-peak electricity is used to power the off-peak heating device to heat solid particles. After the solid particles are heated, they are stored in a high-temperature particle thermal energy storage tank. During non-off-peak electricity periods, a fluidized bed heat exchanger is used to release the stored heat energy of the solid particles to heat the working medium. The working medium drives a high-efficiency supercritical carbon dioxide Brayton combined cycle or steam Rankine cycle system with a generator to convert the stored heat energy back into electrical energy, thereby improving energy utilization efficiency, increasing the economic efficiency of thermal power units, and achieving efficient energy consumption. The independent off-peak electricity thermal energy storage system has good scalability, low cost, and site selection flexibility, and can support the integration of grid-scale renewable energy and other thermal energy supplies, playing a crucial role in renewable energy consumption. It can operate in a wide temperature range of -100 to 1000°C, reducing capital costs. Furthermore, the working medium heated by the fluidized bed heat exchanger can also be applied to various industrial production processes that require high-temperature steam, such as dyeing, drying, sizing, and printing processes in the textile printing and dyeing industry; and the heating and dissolving of chemicals, paper processing, forming paper, and black pulp concentration processes in the paper industry.

[0025] 2. The present invention provides a high-temperature thermal storage hot air furnace system based on off-peak electricity heat storage. The fluidizing air from the fluidized bed heat exchanger is extracted as hot air and sent to the built-in hot air furnace heat exchanger of the hot air furnace device. The hot air furnace heat exchanger can heat the pure, low-humidity air or the flowing cold air in one go. The heated air becomes dry drying air and is transported to the working area by a fan to achieve the purpose and requirements of heat output. The hot air furnace device generates hot air that directly contacts the material for heating, drying or baking. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a high-temperature thermal storage hot air furnace system based on off-peak electricity thermal storage according to the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of a valley electricity heating device;

[0028] Figure 3 This is a schematic diagram of the structure of a high-temperature particle heat storage tank;

[0029] Figure 4This is a schematic diagram of a fluidized bed heat exchanger.

[0030] Figure 5 This is a schematic diagram of the hot blast stove device;

[0031] Figure 6 This is a schematic diagram of the structure of a low-temperature particle thermal storage tank.

[0032] In the diagram: 1. Renewable energy off-peak electricity system; 2. Off-peak electricity heating device; 201. First outer shell; 202. Resistance heating plate; 203. First particle inlet; 204. First particle outlet; 205. Flow channel; 3. Particle conveyor; 4. Gas-solid separator; 5. Low-temperature particle heat storage tank; 501. Fourth particle inlet; 502. Fourth particle outlet; 503. Curved ramp; 504. Insulation layer; 505. Structural layer; 6. Fluidized bed heat exchanger; 601. Second outer shell; 602. Fluid tube bundle; 603. Air distribution plate; 604. Third particle inlet; 605. Third particle outlet; 606. Inlet end 607. Outlet end; 7. High-temperature particle heat storage tank; 701. Second particle inlet; 702. Second particle outlet; 703. Curved slope; 704. Refractory layer; 705. Insulation layer; 706. Structural layer; 8. Hot air furnace device; 801. Hot air furnace heat exchanger; 802. Condensation waste heat recovery pipeline; 803. Drying air pipeline; 804. Water inlet; 805. Water outlet; 9. Drying air blower; 10. Particle feeder; 11. Fluidized bed blower; 12. Condensation heat exchanger; 13. First fluidized air pipeline; 14. Second fluidized air pipeline; 15. Condensation bypass; 16. Drying air pipeline. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of the various possible embodiments of the present invention, intended to provide a basic understanding of the invention, but not intended to identify key or decisive elements of the invention or to limit the scope of protection sought.

[0034] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0035] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0037] In the description of this invention, it should be noted that the circuits, electronic components and modules involved in this invention are all prior art, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve improvements to the internal structure and method.

[0038] It should be further noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] Please refer to Figure 1 The present invention provides a high-temperature thermal storage hot air furnace system based on off-peak electricity thermal storage, including an off-peak electricity heating device 2, a high-temperature particle thermal storage tank 7, a fluidized bed heat exchanger 6, a gas-solid separator 4, a hot air furnace device 8, a condensing heat exchanger 12, and a low-temperature particle thermal storage tank 5.

[0040] like Figure 2 As shown, the off-peak electricity heating device 2 is used to heat solid particles during off-peak electricity hours to obtain solid particles at a predetermined temperature. The solid particles can be one of ceramic particles, quartz sand, and industrial waste residue. The off-peak electricity heating device 2 includes a first outer shell 201 and a plurality of resistance heating plates 202 disposed within the first outer shell 201.

[0041] Specifically, the outer wall of the first outer shell 201 is provided with a heat insulation layer. The upper end of the first outer shell 201 is provided with a first particle inlet 203, and the lower end is provided with a first particle outlet 204. Each of the resistance heating plates 202 is vertically arranged and fixedly disposed inside the first outer shell 201. The resistance heating plates 202 are arranged parallel to each other and are equally spaced. The gap between any two adjacent resistance heating plates 202 forms a flow channel 205, through which solid particles can flow, and the solid particles are heated to a predetermined temperature by each resistance heating plate 202 when they flow through. The resistance heating plate 202 specifically includes a straight ceramic shell and a heating element disposed inside the ceramic shell.

[0042] Solid particles flow in through the first particle inlet 203, then through the flow channel 205, and finally out through the first particle outlet 204. As the solid particles flow through the flow channel 205, they come into contact with the outer wall of the resistance heating plate 202, thereby being heated to a predetermined temperature.

[0043] like Figure 3 As shown, the high-temperature particle heat storage tank 7 is used to store the solid particles heated by the off-peak electricity heating device 2 using off-peak electricity. The outer wall of the high-temperature particle heat storage tank 7 includes a refractory layer 704, an insulation layer 705, and a structural layer 706 arranged sequentially from the inside to the outside. In this way, the high-temperature particle heat storage tank 7 can store the solid particles for a relatively long time with minimal heat loss. In this embodiment, the refractory layer 704 is made of refractory material with a thickness of 0.5m, the insulation layer 705 is made of calcium silicate insulation material with a width of 1m, and the structural layer 706 is made of 0.3m of concrete. The high-temperature particle heat storage tank 7 can achieve a heat loss of <3% after storing solid particles for 5 days at a storage temperature of 1200℃.

[0044] The high-temperature particle heat storage tank 7 is provided with a second particle inlet 701 at the upper end and a second particle outlet 702 at the lower end. The second particle outlet 702 is funnel-shaped, so that a curved slope 703 is formed on the inner wall of the second particle outlet 702. The curved slope 703 can prevent the solid particles from accumulating and arching.

[0045] Furthermore, to better prevent the solid particles from accumulating and arching, the minimum diameter of the second particle outlet 702 can be calculated using the following formula:

[0046]

[0047] Among them, b crit It is the minimum diameter of the second particle outlet 702, σ crit and ρ crit These are the critical stress and critical bulk density, respectively, both determined by measurements of the flow function.

[0048] The fluidized bed heat exchanger 6 is connected to the high-temperature particle heat storage tank 7. In this embodiment, the high-temperature thermal energy storage hot air furnace system based on off-peak electricity storage also includes a particle feeder 10, which is positioned between the high-temperature particle heat storage tank 7 and the fluidized bed heat exchanger 6. During non-off-peak electricity periods, the particle feeder 10 transports the solid particles output from the second particle outlet 702 of the high-temperature particle heat storage tank 7 to the fluidized bed heat exchanger 6. The fluidized bed heat exchanger 6 exchanges heat with the solid particles, thereby outputting the heated working medium.

[0049] Specifically, such as Figure 4As shown, the fluidized bed heat exchanger 6 includes a second outer shell 601 and a fluid tube bundle 602 disposed within the second outer shell 601. The second outer shell 601 has a bottom air distribution plate 603, a top third particle outlet 605, and a bottom side third particle inlet 604. The fluid tube bundle 602 is serpentine, with its inlet end 606 and outlet end 607 located on the same side of the second outer shell 601, wherein the inlet end 606 is located at the upper part of the second outer shell 601, and the outlet end 607 is located at the lower part of the second outer shell 601.

[0050] The solid particles output from the high-temperature particle heat storage tank 7 enter the second outer shell 601 through the third particle inlet 604, supplying air to the air distribution plate 603. Under the action of the fluidizing air, the solid particles are blown upward, and the working medium is input from the inlet end 606 and flows downward along the fluid tube bundle 602 until it flows out from the outlet end 607. During the flow process, the working medium exchanges heat with the solid particles and is thus heated. At the same time, the fluidizing air in the second outer shell 601 that is in direct contact with the solid particles is also heated. Finally, the solid particles and the fluidizing air are discharged from the third particle outlet 605.

[0051] The gas-solid separator 4 is connected to the fluidized bed heat exchanger 6, specifically to the third particle outlet 605. The solid particles and fluidizing air output from the fluidized bed heat exchanger 6 are separated after entering the gas-solid separator 4, and the solid particles and fluidizing air can be obtained.

[0052] like Figure 5 As shown, the hot air furnace device 8 is used to absorb the heat of the fluidizing air separated by the gas-solid separator 4. The hot air furnace device 8 specifically includes a hot air furnace body, and a hot air furnace heat exchanger 801, a drying air pipeline 803, and a condensation waste heat recovery pipeline 802 disposed in the hot air furnace body.

[0053] The condensation waste heat recovery pipeline 802 is located around the drying air pipeline 803. The drying air pipeline 803 is connected to the hot air furnace heat exchanger 801. The hot air furnace heat exchanger 801 is connected to the gas-solid separator 4 through the first fluidizing air pipeline 13 and to the fluidized bed heat exchanger 6 through the second fluidizing air pipeline 14. The second fluidizing air pipeline 14 is equipped with a fluidized bed blower 11.

[0054] The fluidizing air separated by the gas-solid separator 4 has a high temperature. This fluidizing air enters the hot air furnace heat exchanger 801 through the first fluidizing air duct 13. Inside the hot air furnace heat exchanger 801, the fluidizing air exchanges heat with the drying air duct 803, thus heating the drying air within the drying air duct 803. The drying air duct 803 has multiple air outlets, allowing the drying air to be blown into the interior of the hot air furnace body. This can be used to directly heat, dry, or bake materials containing moisture.

[0055] The condensation waste heat recovery pipeline 802 is installed on the inner wall of the hot air furnace body. The drying air pipeline 803 generates radiation and convection heat exchange between the drying air input into the hot air furnace body and the condensate in the condensation waste heat recovery pipeline 802, and recovers the waste heat of the drying air through the condensation waste heat recovery pipeline 802.

[0056] The condenser heat exchanger 12 is connected to the hot air furnace heat exchanger 801 via a drying air duct 16, and a drying air blower 9 is installed on the drying air duct 16. The condenser heat exchanger 12 is provided with a condenser bypass 15. The inlet 804 and outlet 805 of the condenser waste heat recovery pipeline 802 are located on the same side, and the inlet 804 and outlet 805 are respectively connected to the condenser bypass 15 to form a circulation loop.

[0057] The condensate in the waste heat recovery pipeline 802 heats the cold air entering the condenser heat exchanger 12 to form dry air. This dry air, driven by the dry air blower 9, is sent along the dry air pipeline 16 into the hot air furnace heat exchanger 801, and then into the drying air pipeline 803. As the dry air flows through the hot air furnace heat exchanger 801, it is further heated to a higher temperature by the fluidizing air. Simultaneously, the condensate circulates in the loop formed by the condenser bypass 15 and the waste heat recovery pipeline 802, and the waste heat from the dry air is used to heat the condensate inside the hot air furnace. This fully utilizes the heat energy carried away by the fluidizing air in the fluidized bed heat exchanger 6, achieving waste heat recovery and utilization of the fluidizing air.

[0058] Furthermore, the second fluidizing air duct 14 will send the fluidizing air that has been cooled down by the heat absorption of the hot air furnace heat exchanger 801 back to the bottom of the fluidized bed heat exchanger 6 for reuse by the fluidized bed heat exchanger 6, thereby realizing the recycling of fluidizing air and reducing heat loss.

[0059] The low-temperature particle heat storage tank 5 is connected to the gas-solid separator 4 to store the solid particles separated by the gas-solid separator 4. The low-temperature particle heat storage tank 5 is also connected to the off-peak electricity heating device 2 to input the solid particles into the off-peak electricity heating device 2.

[0060] Specifically, such as Figure 6As shown, the outer wall of the low-temperature particle thermal storage tank 5 includes an insulation layer 504 and a structural layer 505 arranged sequentially from the inside to the outside. In this embodiment, the insulation layer 504 is made of calcium silicate insulation material with a width of 0.4m, and the structural layer 505 is made of concrete with a width of 0.3m. In this way, the low-temperature particle thermal storage tank 5 achieves a heat loss of <3% at a thermal storage temperature of 300℃.

[0061] The low-temperature particle heat storage tank 5 is provided with a fourth particle inlet 501 at the upper end and a fourth particle outlet 502 at the lower end. The fourth particle outlet 502 is funnel-shaped, so that a curved slope 503 is formed on the inner wall of the fourth particle outlet 502. The curved slope 503 can prevent the solid particles from accumulating and arching.

[0062] In order to transport the low-temperature solid particles to the off-peak electricity heating device 2, the high-temperature thermal storage hot air furnace system based on off-peak electricity heat storage also includes a particle conveyor 3. The particle conveyor 3 is set between the low-temperature particle heat storage tank 5 and the off-peak electricity heating device 2. The low-temperature solid particles stored in the low-temperature particle heat storage tank 5 are input into the off-peak electricity heating device 2 through the particle conveyor 3, and the solid particles are heated again during the next off-peak electricity period.

[0063] like Figure 1 As shown, the working process of a high-temperature thermal storage hot air furnace system based on off-peak electricity storage according to the present invention is as follows:

[0064] During off-peak hours, the off-peak electricity system 1 is used to supply power to the off-peak heating device 2. The off-peak heating device 2 heats the solid particles inside to a predetermined temperature to obtain high-temperature solid particles, and stores the high-temperature solid particles in the high-temperature particle heat storage tank 7.

[0065] During non-off-peak electricity hours, high-temperature solid particles are conveyed to the fluidized bed heat exchanger 6 via the particle feeder 10. The working medium is heated as it flows through the fluid tube bundle 602. The working medium drives a high-efficiency supercritical carbon dioxide Brayton combined cycle or steam Rankine cycle system with a generator to convert the stored thermal energy back into electrical energy. Furthermore, the fluidized bed heat exchanger 6 also outputs a mixture of solid particles and fluidizing air. The gas-solid separator 4 separates the mixture to obtain solid particles and fluidizing air. The solid particles are stored in the low-temperature particle heat storage tank 5.

[0066] The high-temperature fluidizing air separated by the gas-solid separator 4 is transported to the hot air furnace heat exchanger 801 via the first fluidizing air pipeline 13. The high-temperature fluidizing air heats the drying air pipeline 803, allowing for the heating, drying, or baking of moisture-containing materials within the hot air furnace body. Simultaneously, the drying air output from the drying air pipeline 803 can also be heated by the condensate waste heat recovery pipeline 802. The condensate in the heated condensate waste heat recovery pipeline 802 heats the air entering the condensate heat exchanger 12, forming dry air, which is then sent to the drying air pipeline 803 via the drying air pipeline 16. Furthermore, the fluidized air, after absorbing heat, is returned to the fluidized bed heat exchanger 6 via the second fluidizing air pipeline 14, achieving the recycling of the fluidizing air.

[0067] During the next off-peak electricity period, the low-temperature solid particles in the low-temperature particle heat storage tank 5 are transported to the off-peak electricity heating device 2 through the particle conveyor 3, and the above process is repeated to recycle the heat absorption and release of the solid particles and improve energy utilization efficiency.

[0068] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0069] Where there is no conflict, the embodiments and features described above can be combined with each other. The above descriptions are merely preferred embodiments of the present invention and are not intended to limit the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-temperature heat storage hot blast stove system based on valley electricity heat storage, characterized in that, The application relates to a low-cost and high-efficiency heat storage and utilization system. The system comprises a valley electricity heating device, a high-temperature particle heat storage tank, a fluidized bed heat exchanger, a gas-solid separator, a hot blast stove device, a condensing heat exchanger and a low-temperature particle heat storage tank. The valley electricity heating device comprises a first shell and a plurality of resistance heating plates arranged in the first shell. Any two adjacent resistance heating plates are arranged in parallel, and a gap between the two resistance heating plates forms a flow channel for solid particles to flow through and be heated to a predetermined temperature by the resistance heating plates. The high-temperature particle heat storage tank is used for storing the solid particles heated by the valley electricity heating device. The fluidized bed heat exchanger is connected to the high-temperature particle heat storage tank to receive the solid particles output by the high-temperature particle heat storage tank and exchange heat with the solid particles to output heated working medium. The gas-solid separator is connected to the fluidized bed heat exchanger to separate the solid particles and fluidizing air output by the fluidized bed heat exchanger. The hot blast stove device comprises a hot blast stove body, a hot blast stove heat exchanger, a drying blast pipe and a condensing waste heat recovery pipe.

2. The high-temperature heat storage hot blast stove system based on valley electricity heat storage according to claim 1, characterized in that: The condensing waste heat recovery pipe is arranged on the inner wall of the hot blast stove body.

3. The high temperature heat storage hot blast stove system based on valley electricity heat storage according to claim 1, characterized in that: The drying blast pipe is connected to the hot blast stove heat exchanger.

4. The high temperature thermal storage hot blast stove system based on valley electricity heat accumulation as claimed in claim 1, characterized in that: The hot blast stove heat exchanger is connected to the gas-solid separator through a first fluidizing air pipe and connected to the fluidized bed heat exchanger through a second fluidizing air pipe.

5. A high temperature thermal storage hot air furnace system based on valley electricity heat storage as claimed in claim 4, wherein: The second fluidizing air pipe is provided with a fluidized bed air blower.

6. The high temperature thermal storage hot blast stove system based on valley electricity heat accumulation as claimed in claim 1, characterized in that: The condensing heat exchanger is connected to the hot blast stove heat exchanger and the condensing waste heat recovery pipe.

7. The high temperature heat storage hot blast stove system based on valley electricity heat storage of claim 1, wherein: The low-temperature particle heat storage tank is connected to the gas-solid separator to store the separated solid particles.

8. The high temperature thermal storage hot blast stove system based on valley electricity heat storage as claimed in claim 1, wherein: The low-temperature particle heat storage tank is also connected to the valley electricity heating device to input the solid particles into the valley electricity heating device.

9. The high temperature heat storage hot blast stove system based on valley electricity heat storage of claim 1, wherein: The condensing heat exchanger is connected to the hot blast stove heat exchanger through a drying blast pipe provided with a drying blast air blower.

10. The high temperature heat storage hot blast stove system based on valley electricity heat storage of claim 1, wherein: The condensing heat exchanger is provided with a condensing bypass to form a circulating loop. The fluidized bed heat exchanger comprises a second shell and a fluid tube bundle arranged in the second shell. The bottom of the second shell is provided with a wind distribution plate, and the top is provided with a third particle outlet. The side of the bottom of the second shell is provided with a third particle inlet. The fluid tube bundle is in a serpentine shape. The inlet end and the outlet end of the fluid tube bundle are arranged on the same side of the second shell. The lower end of the high-temperature particle heat storage tank is provided with a second particle outlet. The lower end of the low-temperature particle heat storage tank is provided with a fourth particle outlet. The second particle outlet and the fourth particle outlet are both in a funnel shape. The outer wall of the high-temperature particle heat storage tank comprises a fireproof layer, a heat preservation layer and a structural layer arranged from inside to outside. The system further comprises a particle feeder and a particle conveyor. The particle feeder is arranged between the high-temperature particle heat storage tank and the fluidized bed heat exchanger. The particle conveyor is arranged between the low-temperature particle heat storage tank and the valley electricity heating device. The resistance heating plate comprises a straight plate type ceramic shell and a heating body arranged in the ceramic shell. The solid particles are one of ceramic particles, quartz sand and industrial waste residues.

Images