Kiln waste heat immersed heat exchange device and heat exchange method

Abstract

The invention relates to the technical field of heat exchange equipment, and discloses a kiln waste heat immersed heat exchange device and a heat exchange method.The kiln waste heat immersed heat exchange device comprises a first water tank, a second water tank, a third water tank, a first heat source pipe, a second heat source pipe and heat exchange terminal equipment; a splitter plate immersed in liquid in the first water tank is arranged at the outlet end of the first heat source pipe, and first filter holes are formed in the splitter plate; a baffle plate is vertically arranged in the second water tank and divides the second water tank into a water inlet cavity and a water outlet cavity, and the water inlet cavity is communicated with the water outlet cavity; the first water tank is communicated with the third water tank, the first water tank is communicated with the outside and the water inlet cavity, and the water inlet end of the heat exchange terminal equipment is communicated with the water outlet cavity through a second heat source pipe. According to the immersed heat exchange device for the waste heat of the kiln, the utilization efficiency and safety of the waste heat of the kiln can be improved, and the heat exchange effect is stabilized.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and in particular to a kiln waste heat immersion heat exchange device and a heat exchange method. Background Art

[0002] In the context of the "dual carbon" goal, how to achieve energy conservation and carbon reduction is not only a national goal, but also a corporate vision. In building ceramic kilns, there are already many solutions for utilizing waste heat, such as using the cooling waste heat to heat the combustion air, using the cooling waste heat to heat the drying kiln, etc. These solutions help to use energy more efficiently and save energy.

[0003] However, some waste heat utilization solutions still have problems such as unstable heat exchange effects and potential safety hazards.

[0004] For example, in order to reduce the energy consumption of raw material granulation, the existing technology applies waste heat to the raw material preparation process of atomizing and heating the mud into granules. Specifically, cold water is sent to the cooling section of the kiln for heating, and then the high-temperature hot water is directly sent to the heat exchange terminal equipment. This heat exchange method is not easy to control the hot water temperature. Since the hot water heat exchange area is fixed and the high-temperature heat source is also fixed, when the water volume is large, the water temperature will decrease; when the water volume is small, the water temperature will become high, and high-temperature and high-pressure steam is easily generated, which affects both the safety of the pipeline and the heat exchange effect of the heat exchange terminal equipment. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a kiln waste heat immersion heat exchange device to improve the utilization efficiency and safety of the kiln waste heat and stabilize the heat exchange effect.

[0006] The technical problem to be solved by the present invention is also to provide an immersion heat exchange method for kiln waste heat, so as to improve the utilization efficiency and safety of kiln waste heat and stabilize the heat exchange effect.

[0007] In order to solve the above technical problems, the present invention provides a kiln waste heat immersion heat exchange device, including a first water tank, a second water tank, a third water tank, a first heat source pipe, a second heat source pipe, and a heat exchange terminal device.

[0008] The first heat source pipe is used to transport the hot gas from the kiln to the first water tank. The outlet end of the first heat source pipe is provided with a diverter plate immersed in the liquid in the first water tank. The diverter plate is provided with a plurality of first filter holes arranged along the circumference of the first heat source pipe.

[0009] A vertically arranged baffle is provided in the second water tank, and the baffle divides the second water tank into a water inlet chamber and a water outlet chamber, and the water inlet chamber and the water outlet chamber are in communication;

[0010] The first water tank is connected to the third water tank, the first water tank is connected to the outside, the bottom of the first water tank is connected to the bottom of the water inlet chamber, and the water inlet end of the heat exchange terminal device is connected to the water outlet chamber through the second heat source pipe.

[0011] As an improvement of the above solution, a second filter hole is provided on the upper portion of the baffle, and the second filter hole connects the water inlet chamber and the water outlet chamber.

[0012] As an improvement of the above scheme, the second water tank is provided with a water inlet connected to the first water tank, and a water outlet connected to the second heat source pipe, the baffle includes a water sealing section and a water filtering section, the water filtering section is arranged above the water sealing section, the second filter hole is arranged in the water filtering section, and the water inlet and the water outlet are both arranged below the water filtering section.

[0013] As an improvement of the above scheme, a through hole connected to the first heat source tube is provided at the center of the diverter plate, and a plurality of array layers formed by the first filter holes are provided on the diverter plate, each array layer is arranged around the through hole, and each array layer is provided with at least two rows of arrays, the diameter of the first filter holes of the array layer from the center to the edge of the diverter plate gradually increases, and the number of arrays of the array layer from the center to the edge of the diverter plate gradually increases.

[0014] As an improvement of the above solution, the first water tank or the second water tank is provided with a temperature sensor for monitoring the temperature of the liquid in the tank, the first heat source tube is provided with an electric actuator, and the temperature sensor and the electric actuator are both connected to the first controller.

[0015] As an improvement of the above solution, a second water pump is provided on the second heat source pipe, and the second water pump and the heat exchange terminal device are both connected to a second controller.

[0016] As an improvement of the above solution, the first water tank and the second water tank keep the liquid levels flush, the second water tank is provided with a first water level sensor, the third water tank passes cold water into the first water tank through a first cold water pipe, the first cold water pipe is provided with a first water pump, and the first water pump and the first water level sensor are both connected to a third controller;

[0017] The diverter plate is arranged below the water filtering section, and the first water level sensor is used for monitoring the water level in the water outlet cavity.

[0018] As an improvement of the above solution, it also includes a second cold water pipe, and the water outlet end of the heat exchange terminal equipment is connected to the third water tank through the second cold water pipe.

[0019] As an improvement of the above solution, the third water tank is also provided with a third cold water pipe and a second water level sensor, the third cold water pipe is connected to an external water source, the third cold water pipe is provided with a solenoid valve, and the solenoid valve and the second water level sensor are both connected to a fourth controller.

[0020] In addition, the present invention also provides a heat exchange method based on the above-mentioned kiln waste heat immersion heat exchange device, which comprises:

[0021] The cold water in the third water tank is passed into the first water tank, so that the diverter plate at the outlet end of the first heat source pipe is immersed below the liquid level of the first water tank, and the liquid levels of the water inlet chamber and the water outlet chamber of the second water tank are flush with the liquid level in the first water tank and reach the preset water level;

[0022] Passing kiln hot air into the first water tank through the first heat source pipe until the liquid in the first water tank reaches a preset temperature;

[0023] The liquid in the water outlet chamber of the second water tank is passed into the water inlet end of the heat exchange terminal device through the second heat source pipe for heat exchange.

[0024] The implementation of the present invention has the following beneficial effects:

[0025] The present invention discloses a kiln waste heat immersion heat exchange device, which uses the waste heat of the roller kiln cooling section for mud heat exchange equipment, thereby helping to improve the utilization efficiency of the kiln waste heat;

[0026] By arranging a diverter plate at the outlet end of the first heat source pipe, the diverter plate is immersed in the liquid in the first water tank, and the first heat source pipe conveys the hot gas from the kiln to the first water tank. Under the action of the diverter plate, the hot gas and the liquid in the first water tank directly exchange heat by convection, and the heat exchange efficiency is high. The generated high-temperature bubbles float up and break the first filter holes of the diverter plate into countless small bubbles, thereby increasing the heat exchange area and improving the heat exchange efficiency.

[0027] The liquid after heat exchange enters the water inlet chamber of the second water tank from the bottom of the first water tank. Under the obstruction of the baffle, a small number of bubbles remaining in the liquid float up in the water inlet chamber and will not flow downward with the liquid in the water outlet chamber and enter the second heat source pipe and the heat exchange terminal equipment from the bottom of the water outlet chamber. Gas-liquid separation is achieved before the hot water enters the second heat source pipe, preventing bubbles from entering the heat exchange terminal equipment and affecting the stability and safety of the heat exchange effect.

[0028] Based on the heat demand feedback from the heat exchange terminal equipment and the hot water temperature measured by the temperature sensor, the control system controls the hot gas flow of the electric actuator and the hot water flow of the second water pump, thereby adjusting the temperature and flow of the hot water delivered to the heat exchange terminal equipment to ensure stable heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1It is a schematic structural diagram of an embodiment of a kiln waste heat immersion heat exchange device of the present invention;

[0030] Figure 2 yes Figure 1 The structural schematic diagram of the second water tank;

[0031] Figure 3 is a first structural schematic diagram of a diverter plate;

[0032] Figure 4 is a second structural schematic diagram of the diverter plate;

[0033] Figure 5 It is a schematic diagram of the structure of the baffle. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] Figures 1 to 5 As shown, the present invention discloses an embodiment of a kiln waste heat immersion heat exchange device, comprising a first water tank 1, a second water tank 2, a third water tank 3, a first heat source pipe 4, a second heat source pipe 5, a first cold water pipe 6, a heat exchange terminal device 7 and a control system. The first heat source pipe 4 is used to transport the hot gas from the kiln to the first water tank 1. The outlet end of the first heat source pipe 4 is provided with a diverter plate 41 immersed in the liquid in the first water tank 1, and the diverter plate 41 is provided with a plurality of first filter holes 411 arranged along the circumference of the outlet of the first heat source pipe 4; a vertically arranged baffle plate 21 is provided in the second water tank 2, and the baffle plate 21 divides the second water tank 2 into a water inlet chamber a and a water outlet chamber b, and the tops of the water inlet chamber a and the water outlet chamber b are connected; the first water tank 1 is connected to the third water tank 3 through the first cold water pipe 6, and the first cold water pipe 6 is used to transfer the third water The cold water in box 3 flows into the first water tank 1, the top of the first water tank 1 is connected to the outside, and the bottom of the first water tank 1 is connected to the bottom of the water inlet chamber a; the water inlet end of the heat exchange terminal device 7 is connected to the bottom of the water outlet chamber b through the second heat source pipe 5; the first water tank 1 or the second water tank 2 is provided with a temperature sensor 11 for monitoring the temperature of the liquid in the tank, the first heat source pipe 4 is provided with an electric actuator 42, and the second heat source pipe 5 is provided with a second water pump 51, and the control system is connected with the temperature sensor 11, the electric actuator 42, the second water pump 51, and the heat exchange terminal device 7.

[0036] In this embodiment, a diverter plate 41 is arranged at the outlet end of the first heat source pipe 4. The diverter plate 41 is immersed in the liquid in the first water tank 1. The first heat source pipe 4 transports the hot gas from the kiln to the first water tank 1. Under the action of the diverter plate 41, the hot gas and the liquid in the first water tank 1 are directly convectively contacted for heat exchange, and the heat exchange efficiency is high. The generated high-temperature bubbles float up and are broken into numerous small bubbles by the first filter holes 411 of the diverter plate 41, thereby increasing the heat exchange area and improving the heat exchange efficiency. The liquid after heat exchange enters the water inlet chamber a of the second water tank 2 from the bottom of the first water tank 1. Under the obstruction of the baffle plate 21, the small amount of liquid remaining in the water is removed. The bubbles float on the water inlet chamber a and will not flow downward with the liquid in the water outlet chamber b and enter the second heat source pipe 5 and the heat exchange terminal device 7 from the bottom of the water outlet chamber b. Gas-liquid separation is achieved before the hot water enters the second heat source pipe 5 to prevent the bubbles from entering the heat exchange terminal device 7 and affecting the stability and safety of the heat exchange effect. The control system controls the hot gas flow of the electric actuator 42 and the hot water flow of the second water pump 51 through the heat demand feedback from the heat exchange terminal device 7 and the hot water temperature measured by the temperature sensor 11, so as to realize the temperature and flow regulation of the hot water sent to the heat exchange terminal device 7 and ensure stable heat exchange.

[0037] Since kilns are high-energy consumption and high-carbon emission equipment, in response to the country's dual carbon policy, building ceramic kilns have utilized most of the waste heat in the processes before and after the kiln, but there is a lot of waste heat in the cooling section of the kiln that has not been utilized. Therefore, the kiln hot air transported by the first heat source pipe 4 in this embodiment is the waste heat of the roller kiln cooling section, that is, the hot air formed after cooling the kiln, which is clean high-temperature air. This part of the waste heat is used for mud heat exchange equipment to further improve the utilization efficiency of the kiln waste heat.

[0038] The second heat source pipe 5 provides heat source to the heat exchange terminal equipment 7. The heat exchange terminal equipment 7 in this embodiment takes the mud heat exchange equipment used in the mud atomization heating granulation process as an example. The second heat source pipe 5 transports hot water with controllable temperature and flow to the mud heat exchange equipment to ensure the stable operation of the mud heat exchange equipment.

[0039] See also Figure 3 In this embodiment, a through hole 412 connected to the first heat source tube 4 is provided on the diverter plate 41 in the first water tank 1. The high-temperature air of the first heat source tube 4 rushes downward into the liquid in the first water tank 1 through the through hole 412 of the diverter plate 41, and directly exchanges heat by convection contact. The first heat source tube 4 is vertically passed through the top center of the first water tank 1 to ensure uniform heat exchange of the liquid in all directions around the first heat source tube 4. Since the high-temperature air transported by the first heat source tube 4 is immersed in the liquid in the first water tank 1, a large number of bubbles will be generated. The diverter plate 41 of this embodiment is preferably arranged horizontally and covers the entire first water tank 1 as much as possible. See Figure 4, a plurality of array layers formed by first filter holes 411 are provided on the diverter plate 41, specifically including a first array layer d, a second array layer e, a third array layer f and a fourth array layer g which are sequentially arranged from the center to the edge of the diverter plate 41, each array layer is arranged around the through hole 412, and each array layer is provided with at least two rows of arrays, the diameter of the first filter holes 411 of the array layer from the center to the edge of the diverter plate 41 gradually increases, and the number of arrays of the array layer from the center to the edge of the diverter plate 41 gradually increases, so as to divert hot water or steam as much as possible, break large bubbles, and form countless small bubbles, thereby increasing the heat exchange area and improving the heat exchange efficiency.

[0040] An exhaust pipe 12 is also provided on the top of the first water tank 1 , and the low-temperature gas that completes heat exchange with the liquid in the first water tank 1 will be discharged through the exhaust pipe 12 .

[0041] In this embodiment, the second water tank 2 is provided with a water inlet in the water inlet chamber a connected with the first water tank 1, and a water outlet in the water outlet chamber b connected with the second heat source pipe 5, and the water inlet and the water outlet are both provided at the lower part of the second water tank 2.

[0042] In this embodiment, the lower parts of the first water tank 1 and the second water tank 2 are connected to form a structure similar to a communicating vessel, so as to keep the liquid levels of the first water tank 1 and the second water tank 2 flush during the immersion heat exchange process. At the same time, in this embodiment, a first water level sensor 22 is provided in the second water tank 2, and a first water pump 61 is provided on the first cold water pipe 6. The control system is connected to the first water pump 61 and the first water level sensor 22. The first water pump 61 replenishes water to the first water tank 1 in time according to the water level change detected by the first water level sensor 22, so that the first water tank 1 and the second water tank 2 maintain a certain water level operation, ensuring the stable supply of hot water to the heat exchange terminal device 7. In this embodiment, the first water tank 1 and the second water tank 2 are connected by a horizontally arranged connecting pipe 23, and the water level fluctuation is small, so that only one first water level sensor 22 is needed to measure the real-time water levels of the first water tank 1 and the second water tank 2, thereby ensuring that the first water tank 1 and the second water tank 2 can stably supply hot water to the outside. At the same time, the first water level sensor 22 is arranged in the second water tank 2, thereby avoiding the influence of a large number of bubbles generated by water-gas heat exchange in the first water tank 1 on the accuracy of water level monitoring, thereby making the equipment operation more stable and reliable.

[0043] See also Figure 5 Preferably, a second filter hole c is provided on the upper portion of the baffle 21, and the second filter hole c connects the water inlet chamber a and the water outlet chamber b. The second filter hole c can help further prevent bubbles from entering the water outlet chamber b, and can also filter some impurities.

[0044] Specifically, the baffle 21 includes a water sealing section 211 and a water filtering section 212. The water filtering section 212 is arranged above the water sealing section 211, the second filter hole c is arranged at the water filtering section 212, and the water inlet and the water outlet are arranged below the water filtering section 212. In the second water tank 2, the hot water entering the water inlet chamber a flows upward from the bottom, enters the water outlet chamber b, and then flows downward from the top. In this process, if there are bubbles in the hot water in the water inlet chamber a, they will be separated from the hot water to ensure that the hot water entering the mud heat exchange equipment from the water outlet chamber b is bubble-free, so as to avoid affecting the heat exchange effect of the mud heat exchanger.

[0045] The first water level sensor 22 of this embodiment is used to monitor the water level in the water outlet chamber b. The first water level sensor 22 is preferably arranged at the top of the water outlet chamber b, and the diverter plate 41 is preferably arranged below the water filter section 212. The cold water of the third water tank 3 is passed into the first water tank 1. When the water level in the first water tank 1 reaches the position of the connecting pipe 23, the water level in the first water tank 1 is kept flush with the water inlet chamber a of the second water tank 2; when the water level in the water inlet chamber a reaches the top of the water sealing section 211, the water level in the first water tank 1 is kept flush with the water inlet chamber a and the water outlet chamber b of the second water tank 2. In this embodiment, the diverter plate 41 is arranged below the water filter section 212, and the first water level sensor 22 monitors the water level of the water outlet chamber b in real time. When the first water level sensor 22 monitors the water level in the water outlet chamber b, it can ensure that the diverter plate 41 at the outlet end of the first heat source pipe 4 is immersed below the liquid surface of the first water tank 1. The setting position of the first water level sensor 22 and the diverter plate 41 can reduce the detection accuracy requirement for the first water level sensor 22. As long as liquid is detected entering the water outlet chamber b, the current water level in the first water tank 1 can be determined so that the diverter plate 41 is immersed below the liquid surface, thereby improving the reliability of immersion heat exchange.

[0046] A first drain valve 13 is provided at the bottom of the first water tank 1, a second drain valve 24 is provided at the bottom of the second water tank 2, and a third drain valve 31 is provided at the bottom of the third water tank 3. The second water tank 2 is provided with a drain port in the water inlet chamber a, the second drain valve 24 is arranged below the drain port, and the water sealing section 211 of the baffle 21 plays a role of intercepting sewage on one side of the water inlet chamber a, so as to prevent sediment and other sewage from entering the second heat source pipe 5 and the mud heat exchange equipment.

[0047] The control system of this embodiment preferably adopts PLC control and is a closed-loop control to reduce manual operation. Among them, the temperature sensor 11 of this embodiment is preferably a thermocouple, which is installed at the position of the first water tank 1 near the connecting pipe 23. The temperature sensor 11 and the electric actuator 42 on the first heat source pipe 4 are connected to the first PLC controller 81; the heat exchange terminal device 7 and the second water pump 51 of the second heat source pipe 5 are connected to the second PLC controller 82; the first water level sensor 22 and the first water pump 61 on the first cold water pipe 6 are connected to the third PLC controller 83.

[0048] The water outlet of the heat exchange terminal device 7 of this embodiment is connected to the third water tank 3 through the second cold water pipe 9. The second cold water pipe 9 plays the role of cold water reflux, and the third water tank 3 plays the role of circulating water storage and water supply. The water that has completed the heat exchange of the heat exchange terminal device 7 returns to the third water tank 3 through the second cold water pipe 9, and is then supplied to the first water tank 1 for water-gas heat exchange. In addition, the third water tank 3 is also provided with a third cold water pipe 32 and a second water level sensor 33. The third cold water pipe 32 is connected to an external water source. The third cold water pipe 32 is provided with a solenoid valve 321. The second water level sensor 33 and the solenoid valve 321 are both connected to the fourth PLC controller 84. The cold water from the mud heat exchange device flows back to the circulating water tank through the second cold water pipe 9. The second water level sensor 33 always monitors the water level of the third water tank 3. If the water level of the third water tank 3 is insufficient, the solenoid valve is controlled by the fourth PLC controller 84 to open the third cold water pipe 32, thereby replenishing the water level.

[0049] In addition, the present invention also provides a heat exchange method based on the above-mentioned kiln waste heat immersion heat exchange device, which comprises the following steps:

[0050] Step 1, pass the cold water in the third water tank 3 into the first water tank 1, so that the diverter plate 41 at the outlet end of the first heat source pipe 4 is immersed below the liquid level of the first water tank 1, and the liquid levels of the water inlet chamber a and the water outlet chamber b of the second water tank 2 are flush with the liquid level in the first water tank 1 and reach the preset water level;

[0051] Step 2, introducing kiln hot air into the first water tank 1 through the first heat source pipe 4 until the liquid in the first water tank 1 reaches a preset temperature;

[0052] Step 3, the liquid in the water outlet chamber b of the second water tank 2 is passed into the water inlet end of the heat exchange terminal device 7 through the second heat source pipe 5 for heat exchange.

[0053] Among them, the water outlet end of the heat exchange terminal device 7 is connected to the third water tank 3 through the second cold water pipe 9. The water that has completed heat exchange in the heat exchange terminal device 7 flows back to the third water tank 3 through the second cold water pipe 9, and is then supplied to the first water tank 1 for heat exchange, forming a circulation of heat exchange medium.

[0054] The temperature sensor 11 provided in the first water tank 1 is used to monitor the temperature of the liquid in the tank. The electric actuator 42 provided on the first heat source tube 4 is used to adjust the flow rate of the first heat source tube 4. The temperature sensor 11 and the electric actuator 42 are both connected to the first PLC controller 81 to realize the temperature adjustment of the hot water in the tank.

[0055] The second water pump 51 provided in the second heat source pipe 5 is used to adjust the flow of hot water sent to the heat exchange terminal device 7. The second heat source pipe 5, the heat exchange terminal device 7 and the second PLC controller 82 are connected to meet the heat demand of the mud heat exchange equipment.

[0056] The present invention utilizes the waste heat (high-temperature air) of the kiln cooling section, and passes the high-temperature air into the first water tank 1 through the first heat source pipe 4, and breaks the bubbles through the diverter plate 41 to exchange heat with the liquid in the first water tank 1. The liquid after heat exchange passes through the baffle 21 of the second water tank 2 to further reduce the gas, and is finally sent to the heat exchange terminal equipment 7 to increase the mud processing temperature; wherein, the temperature and flow rate of the liquid sent to the heat exchange terminal equipment 7 are respectively controlled by PLC; the circulating water passing through the heat exchange terminal equipment 7 enters the third water tank 3, and is supplied to the immersed first water tank 1 to form a cycle.

[0057] In summary, the implementation of the present invention has the following beneficial effects:

[0058] 1. The temperature and flow rate of hot water leading to the heat exchange terminal device 7 are controllable, which can ensure the stability of heat exchange of the heat exchange terminal device 7;

[0059] 2. The first water tank 1 adopts an immersion heat exchange method, so that the first heat source pipe 4 and the hot air it transports directly contact with water for heat exchange, and the heat exchange efficiency is high;

[0060] 3. The first water tank 1 is provided with a diverter plate 41, which can break bubbles, increase the heat exchange area between high-temperature steam and water, and improve the heat exchange efficiency;

[0061] 4. The baffle 21 provided in the second water tank 2 can prevent the residual air in the first water tank 1 from entering the heat exchange terminal device 7, thereby avoiding affecting the efficiency of the heat exchange terminal device 7;

[0062] 5. The entire system is PLC controlled and closed-loop controlled with a high degree of automation.

[0063] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A kiln waste heat immersion heat exchange device, characterized in that: It includes a first water tank, a second water tank, a third water tank, a first heat source pipe, a second heat source pipe, and a heat exchange terminal device. The first heat source pipe is used to transport the hot gas from the kiln to the first water tank. The outlet end of the first heat source pipe is provided with a diverter plate immersed in the liquid in the first water tank. The diverter plate is provided with a plurality of first filter holes arranged along the circumference of the first heat source pipe. A vertically arranged baffle is provided in the second water tank, and the baffle divides the second water tank into a water inlet chamber and a water outlet chamber, and the water inlet chamber and the water outlet chamber are in communication; The first water tank is connected to the third water tank, the first water tank is connected to the outside, the bottom of the first water tank is connected to the bottom of the water inlet chamber, and the water inlet end of the heat exchange terminal device is connected to the water outlet chamber through the second heat source pipe.

2. The kiln waste heat immersion heat exchange device according to claim 1, characterized in that: A second filter hole is provided on the upper portion of the baffle, and the second filter hole communicates with the water inlet cavity and the water outlet cavity.

3. The kiln waste heat immersion heat exchange device according to claim 2, characterized in that: The second water tank is provided with a water inlet connected with the first water tank, and a water outlet connected with the second heat source pipe, the baffle includes a water sealing section and a water filtering section, the water filtering section is arranged above the water sealing section, the second filter hole is arranged in the water filtering section, and the water inlet and the water outlet are both arranged below the water filtering section.

4. The kiln waste heat immersion heat exchange device according to claim 1, characterized in that: A through hole connected to the first heat source tube is provided at the center of the diverter plate, and a plurality of array layers formed by the first filter holes are provided on the diverter plate, each array layer is arranged around the through hole, and each array layer is provided with at least two rows of arrays, the diameter of the first filter holes of the array layer from the center to the edge of the diverter plate gradually increases, and the number of arrays of the array layer from the center to the edge of the diverter plate gradually increases.

5. The kiln waste heat immersion heat exchange device according to claim 1, characterized in that: The first water tank or the second water tank is provided with a temperature sensor for monitoring the temperature of the liquid in the tank, the first heat source tube is provided with an electric actuator, and the temperature sensor and the electric actuator are both connected to the first controller.

6. The kiln waste heat immersion heat exchange device according to claim 1, characterized in that: A second water pump is provided on the second heat source pipe, and the second water pump and the heat exchange terminal equipment are both connected to the second controller.

7. The kiln waste heat immersion heat exchange device according to claim 2, characterized in that: The first water tank and the second water tank keep the liquid levels flush, the second water tank is provided with a first water level sensor, the third water tank passes cold water into the first water tank through a first cold water pipe, the first cold water pipe is provided with a first water pump, and the first water pump and the first water level sensor are both connected to a third controller; The diverter plate is arranged below the water filtering section, and the first water level sensor is used for monitoring the water level in the water outlet cavity.

8. The kiln waste heat immersion heat exchange device according to claim 1, characterized in that: It also includes a second cold water pipe, and the water outlet end of the heat exchange terminal equipment is connected to the third water tank through the second cold water pipe.

9. The kiln waste heat immersion heat exchange device according to claim 1, characterized in that: The third water tank is also provided with a third cold water pipe and a second water level sensor. The third cold water pipe is connected to an external water source. The third cold water pipe is provided with a solenoid valve. The solenoid valve and the second water level sensor are both connected to a fourth controller.

10. A heat exchange method based on the kiln waste heat immersion heat exchange device according to any one of claims 1 to 9, characterized in that: include The cold water in the third water tank is passed into the first water tank, so that the diverter plate at the outlet end of the first heat source pipe is immersed below the liquid level of the first water tank, and the liquid levels of the water inlet chamber and the water outlet chamber of the second water tank are flush with the liquid level in the first water tank and reach the preset water level; Passing kiln hot air into the first water tank through the first heat source pipe until the liquid in the first water tank reaches a preset temperature; The liquid in the water outlet chamber of the second water tank is passed into the water inlet end of the heat exchange terminal device through the second heat source pipe for heat exchange.

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