High-temperature furnace with movable high-temperature heat-removing device and cooling method

Abstract

This invention discloses a high-temperature kiln with a movable high-temperature heat extraction device and a cooling method. The high-temperature kiln with the movable high-temperature heat extraction device includes: a kiln body; and a heat extraction pipe network disposed on the top of the kiln body, capable of being raised and lowered relative to the kiln body. The heat extraction pipe network includes multiple insertion pipes, which are oriented towards the kiln body. Each insertion pipe has a medium flow channel for connecting to a medium source for medium flow. This method enables rapid cooling of the high-temperature kiln and recovery and utilization of waste heat, resulting in higher thermal energy utilization. Furthermore, the cooling method can cool the top insulation material of the high-temperature kiln layer by layer, achieving layered cooling of the insulation material and stable recovery and utilization of waste heat. This invention is applied in the field of high-temperature kiln cooling devices.

Description

Technical Field

[0001] This invention relates to the field of high-temperature kiln cooling devices, and particularly to a high-temperature kiln with a portable high-temperature heat extraction device and a cooling method thereof. Background Technology

[0002] In the production processes of high-temperature kilns with internal temperatures exceeding 600℃, such as graphitization furnaces, carbon furnaces, calcining furnaces, pre-carbonization kilns, ceramic kilns, and aluminum alloy melting furnaces, there is a high-temperature cooling process for finished products or waste residue. This cooling process releases a large amount of heat, and the cooling cycle is very long. Furthermore, the heat source is mostly distributed within the powder material, and conventional cooling devices cannot withstand such high temperatures. Indirect contact cooling is typically used, but due to the limited thermal conductivity of the powder, the heat extraction efficiency is relatively slow. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a high-temperature kiln with a portable high-temperature heat extraction device, which can quickly cool the high-temperature kiln and recover and utilize waste heat, resulting in higher thermal energy utilization.

[0004] A rapid cooling method for a high-temperature kiln equipped with a portable high-temperature heat extraction device is also proposed.

[0005] According to a first aspect of the present invention, a high-temperature kiln with a movable high-temperature heat extraction device includes: a furnace body; a heat extraction pipe network disposed on the top of the furnace body and capable of being raised and lowered relative to the furnace body, the heat extraction pipe network including a plurality of insertion pipes extending toward the furnace body, the insertion pipes having a medium flow channel inside, the medium flow channel being used to communicate with a medium source for medium to flow through.

[0006] The high-temperature kiln with a movable high-temperature heat exchange device according to the first aspect of the present invention has at least the following beneficial effects: a heat exchange pipe network is provided at the top of the furnace body. When the furnace body needs to be cooled, the heat exchange pipe network is lowered so that the insertion tube on the heat exchange pipe network is inserted into the furnace body for active heat dissipation. When heat dissipation is not required, the heat exchange pipe network is suspended above the furnace body and does not affect the normal operation of the furnace body. When the insertion tube is inserted into the furnace body, the medium source delivers the medium flowing through the medium flow channel of the insertion tube. When the medium flows through the insertion tube, it exchanges heat with the material in the furnace body and removes the heat of the material in the furnace body, thereby realizing rapid cooling of the material in the kiln. The heat is also carried away by the medium, which facilitates the recovery and utilization of heat and improves the efficiency of heat energy utilization.

[0007] According to some embodiments of the present invention, the heat extraction network further includes an inlet water network and an outlet water network. The inlet water network is connected to each of the aforementioned medium flow channels and is used to connect to a medium source. The outlet water network is connected to each of the aforementioned medium flow channels and is connected to a medium source or a waste heat utilization component.

[0008] According to some embodiments of the present invention, the water inlet network is connected to the medium source via a flexible hose, wherein the flexible hose is a flexible pipe structure that can withstand pressure above 0.2 MPa and temperature above 200°C.

[0009] According to some embodiments of the present invention, a cover is also included, which is disposed on the top of the furnace body and connected to the furnace body via a lifting mechanism, and the heat extraction pipe network is disposed inside the cover and located on the side of the cover facing the furnace body.

[0010] According to some embodiments of the present invention, a plurality of temperature sensing elements are further included, the temperature sensing elements being located at the top of the furnace body and facing the furnace body, and the end of the temperature sensing element facing the furnace body is flush with the end of the insertion tube facing the furnace body, and can move together with the insertion tube.

[0011] According to some embodiments of the present invention, the end of the insertion tube extending toward the furnace body is provided with a wear-resistant head.

[0012] According to some embodiments of the present invention, the insertion tube adopts a pipe structure with an outer diameter of 0.02m-0.3m, a length of 0.3m-5m, and a temperature resistance of over 600°C.

[0013] According to some embodiments of the present invention, the insertion depth of the insertion tube is 0 to 5 m.

[0014] According to some embodiments of the present invention, the furnace body is a cuboid box structure, and two opposing electrodes are provided on the outer peripheral surface of the furnace body. The material cavity of the furnace body is wrapped by an insulating outer layer, and the insertion tube can be inserted into the top of the insulating outer layer.

[0015] According to some embodiments of the present invention, the insertion tubes are arranged in a rectangular array.

[0016] A rapid cooling method for a high-temperature kiln according to a second aspect of the present invention includes: a high-temperature kiln with a movable high-temperature heat extraction device as described in the first aspect of the present invention.

[0017] The rapid cooling method for high-temperature kilns according to a second aspect of the present invention has at least the following beneficial effects: by controlling the raising and lowering of the heat extraction network and the flow rate of the medium source input insertion pipe, the kiln can be rapidly cooled down, and the heat energy can be recovered and utilized through the medium source, resulting in higher heat energy utilization efficiency.

[0018] According to some embodiments of the present invention, during the kiln cooling stage, the heat extraction pipe network located at the top of the kiln body is lowered until the insertion tube is inserted to a preset depth; the temperature at the insertion position of the insertion tube is detected, and when the temperature drops to a preset temperature value, the heat extraction pipe network located at the top of the kiln body is lowered, and the insertion tube is controlled to continue to be inserted to a preset depth; the above temperature detection-insertion tube insertion to preset depth is repeated until the insertion tube is fully inserted.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of a high-temperature kiln with a movable high-temperature heat extraction device according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of a high-temperature kiln with a movable high-temperature heat extraction device that uses water as a medium, according to one embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of a high-temperature kiln with a movable high-temperature heat extraction device that uses carbon dioxide as a medium, according to one embodiment of the present invention.

[0024] Icon labels:

[0025] Furnace body 100; outer insulation layer 110;

[0026] Heat extraction pipe network 200; insertion pipe 210; water inlet pipe network 220; water outlet pipe network 230;

[0027] Casing 300; Lifting mechanism 310. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0030] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or the order in which the indicated technical features are presented.

[0031] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0032] Reference Figure 1 , Figure 2 and Figure 3 As shown, a high-temperature kiln with a movable high-temperature heat extraction device according to an embodiment of the present invention includes:

[0033] Furnace body 100;

[0034] The heat extraction pipe network 200 is installed on the top of the furnace body 100 and can be raised and lowered relative to the furnace body 100. The heat extraction pipe network 200 includes multiple insertion pipes 210, which extend toward the furnace body 100. The insertion pipes 210 are provided with medium flow channels, which are used to connect with the medium source for the medium to flow through.

[0035] In this context, "for the medium to flow through" means that after the medium source delivers the medium into one end of the medium flow channel, it flows out from the other end of the medium flow channel. A closed loop can be formed between the medium source and the medium flow channel. After the medium flows out of the medium flow channel, it can exchange heat with the waste heat utilization component through the heat exchange component to transfer heat to the waste heat utilization component. Alternatively, it can be a conveying pipeline of medium source-medium flow channel-waste heat utilization component, which directly inputs the medium with heat into the waste heat utilization component for utilization.

[0036] It is understandable that a heat exchange pipe network 200 is installed at the top of the furnace body 100. When the furnace body 100 needs cooling, the heat exchange pipe network 200 is lowered so that the insertion pipe 210 on the heat exchange pipe network 200 is inserted into the furnace body 100 for active heat dissipation. When heat dissipation is not required, the heat exchange pipe network 200 is suspended above the furnace body 100 and does not affect the normal operation of the furnace body 100. When the insertion pipe 210 is inserted into the furnace body 100, the medium source delivers the medium through the medium flow channel of the insertion pipe 210. When the medium flows through the insertion pipe 210, it exchanges heat with the material in the furnace body 100 and removes the heat of the material in the furnace body 100, thereby achieving rapid cooling of the material in the kiln. The heat is also carried away by the medium, which facilitates the recovery and utilization of heat and improves the efficiency of heat energy utilization.

[0037] The medium source can be the external tap water network, and the water from the tap water network, after passing through a water softening and desalination device, is pumped into the medium flow channel. The medium is softened tap water.

[0038] The medium can also be molten salt, heat transfer oil, carbon dioxide, nitrogen, or other gases.

[0039] The medium flow channel is wound around the outside of the insertion tube 210, or the medium flow channel is in the form of a U-shaped tube, a double spiral tube, or a concentric sleeve structure. The medium flow channel is coaxially arranged with the insertion tube 210 and is located inside the insertion tube 210.

[0040] It is worth understanding that the outline of the heat extraction pipe network 200 can be set according to the outline of the top surface of the furnace body 100, and the two correspond to each other.

[0041] In this embodiment, taking a graphitization furnace as an example, the furnace body 100 is a rectangular box structure, and two opposing electrodes are provided on the outer circumferential surface of the furnace body 100. The material cavity of the furnace body 100 is wrapped by the heat insulation outer layer 110, and the insertion tube 210 can be inserted into the top of the heat insulation outer layer 110.

[0042] It is understandable that by energizing the two electrodes of the furnace body 100, the temperature of the material in the material chamber is increased, thus achieving graphitization. During the heating stage of the graphitization furnace, the temperature inside the material chamber can reach up to 3000℃, while the temperature of the outer insulation layer 110 is much lower, only 1000℃. During the heat dissipation stage of the graphitization furnace, the insertion tube 210 is inserted into the outer insulation layer 110 to dissipate heat. The lower temperature of the outer insulation layer 110 reduces the requirements for the temperature resistance of the insertion tube 210 material, making material selection easier and less costly. Accelerating the heat dissipation of the outer insulation layer 110 allows it to be removed directly when its temperature drops to the discharge temperature, enabling the removal of the insulation layer and the material from the graphitization furnace.

[0043] It is understandable that, depending on the actual dimensions of the furnace body 100, the cooling requirements, the type of high-temperature kiln, and the processing conditions, the insertion tube 210 adopts a pipe structure with an outer diameter of 0.02m-0.3m, a length of 0.3m-5m, and the ability to withstand temperatures above 600℃. The insertion depth of the insertion tube 210 is 0-5m. The insertion tubes 210 are arranged in a rectangular array.

[0044] Reference Figure 1 As shown, the heat extraction network 200 also includes an inlet water network 220 and an outlet water network 230. The inlet water network 220 is connected to each medium flow channel and is used to connect to the medium source. The outlet water network 230 is connected to each medium flow channel and is connected to the medium source or waste heat utilization component.

[0045] It is understandable that the inlet pipe network 220 connects the medium flow channel and the medium source. The medium transported by the medium source is input into each medium flow channel through the inlet pipe network 220, which is quick and convenient. Then, the medium that has exchanged heat with the material in the medium flow channel is exported through the outlet pipe network 230 and guided back to the medium source through the outlet pipe network 230 for heat extraction again, or directly exported to the waste heat utilization unit to directly utilize the heat of the medium after heat exchange.

[0046] Among them, waste heat utilization components can be boilers or heat storage equipment.

[0047] It is understandable that the inlet water network 220 is connected in parallel to each medium flow channel, and the outlet water network 230 is also connected in parallel to each medium flow channel. This ensures that the temperature of the medium flowing into each medium flow channel is consistent, and the heat absorption of the medium in each medium flow channel is more uniform, allowing the kiln to dissipate heat evenly and cool down. In contrast, with medium flow channels connected in series, the temperature of the medium will rise to a certain extent after passing through each medium flow channel, affecting the heat absorption of subsequent medium flow channels, causing uneven heat absorption, and resulting in uneven heat dissipation of the kiln, which is not conducive to the heat dissipation of the kiln.

[0048] Reference Figure 2 and Figure 3 As shown, the water inlet pipe network 220 is connected to the medium source through a flexible hose, which is a flexible pipe structure that can withstand pressure above 0.2MPa and temperature above 200℃.

[0049] It is worth understanding that when the hose is directly connected to the medium source, the length of the hose needs to be greater than or equal to the maximum distance between the water inlet network 220 and the medium source. This ensures that when the water inlet network 220 moves to this maximum distance during the lifting and lowering process, the hose will not be subjected to excessive tension, thus avoiding damage to the hose. Furthermore, when the water inlet network 220 is lifted and lowered, the hose adjusts itself through its flexibility to keep the pipeline unobstructed, facilitating the transmission of the medium into the water inlet network 220.

[0050] It is worth understanding that when the hose is indirectly connected to the medium source, the hose can also be connected only to the water inlet network 220 and the furnace body 100, and a connection interface is set on the furnace body 100. The medium source is connected to the connection interface on the furnace body 100 through a rigid pipe or a hose.

[0051] In addition, the outlet water network 230 is also connected to the medium source or waste heat utilization component via a hose. The design of the hose of the outlet water network 230 is the same as that of the hose of the inlet water network 220, and will not be described in detail here.

[0052] In this embodiment, when water is used as the medium, the hose is a flexible pipe structure that can withstand pressure of 0.4 MPa or higher and temperature of 200°C or higher; when molten salt is used as the medium, the hose is a flexible pipe structure that can withstand pressure of 0.2 MPa or higher and temperature of 420°C or higher.

[0053] Reference Figure 1 As shown, it also includes a cover 300, which is located on the top of the furnace body 100 and connected to the furnace body 100 via a lifting mechanism 310. The heat extraction pipe network 200 is located inside the cover 300 on the side of the cover 300 facing the furnace body 100.

[0054] It is understandable that the cover 300 is directly set on top of the furnace body 100, which can reduce the dissipation of heat in the furnace body 100 in the form of thermal radiation, so that more heat is carried away by the medium in the heat exchange pipe network 200, resulting in higher heat utilization. Moreover, the heat exchange pipe network 200 can be raised and lowered relative to the furnace body 100 by the lifting and lowering of the cover 300. The cover provides support for the heat exchange pipe network 200, and the heat exchange pipe network 200 is not easily deformed by the lifting force provided by the lifting mechanism 310.

[0055] The lifting mechanism 310 can be a hydraulic lifting device.

[0056] The shape of the cover 300 corresponds to the shape of the top surface of the furnace body 100.

[0057] In some specific embodiments of the present invention, a plurality of temperature detection elements are also included. The temperature detection elements are located at the top of the furnace body 100 and are disposed toward the furnace body 100. The end of the temperature detection element toward the furnace body 100 is flush with the end of the insertion tube 210 toward the furnace body 100 and can move together with the insertion tube 210.

[0058] It is understandable that by having the temperature detection element move together with the insertion tube 210, and with the end of the temperature detection element and the insertion tube 210 facing the furnace body 100 aligned with each other, the temperature detection element will also be inserted into the furnace body 100 when the insertion tube 210 is inserted into the furnace body 100. This enables temperature detection of the furnace body 100 at the insertion depth of the insertion tube 210. When the temperature at the insertion position of the insertion tube 210 drops to a certain value, the lifting mechanism 310 can be controlled to insert the insertion tube 210 deeper into the furnace body 100, thereby achieving layer-by-layer cooling of the furnace body 100. Furthermore, it facilitates the control of the heat extraction network 200 within a certain range, ensuring a continuous and stable output of a medium with a certain amount of heat.

[0059] The temperature sensing element is a thermocouple, which can be directly mounted on the cover 300 and extended towards the furnace body 100.

[0060] In some specific embodiments of the present invention, the end of the insertion tube 210 extending toward the furnace body 100 is provided with a wear-resistant head.

[0061] It is worth understanding that the wear-resistant head can provide better wear resistance when the insertion tube 210 is inserted into the furnace body 100, increase the number of times the insertion tube 210 can be inserted into the furnace body 100, effectively extend the service life of the insertion tube 210, and make it more reliable in use.

[0062] Among them, the wear-resistant head is drill-shaped. During the insertion process of the insertion tube 210, the drill-shaped wear-resistant head has a better insertion effect and is easier to insert into the insulation material inside the furnace body 100. The insulation material is mostly a stack of powdery substances.

[0063] Reference Figure 1 As shown, a rapid cooling method for a high-temperature kiln according to a second aspect of the present invention includes: a high-temperature kiln with a movable high-temperature heat extraction device according to a first aspect of the present invention.

[0064] It is worth understanding that by controlling the rise and fall of the heat extraction network 200 and the flow rate of the medium source input insertion pipe 210, the kiln can be cooled down quickly and the heat energy can be recovered and utilized through the medium source, resulting in higher heat energy utilization efficiency.

[0065] Reference Figure 1 As shown, during the kiln cooling stage, the heat extraction pipe network 200 located at the top of the furnace body 100 is lowered until the insertion tube 210 is inserted to a preset depth; the temperature at the insertion position of the insertion tube 210 is detected, and when the temperature drops to a preset temperature value, the high-temperature heat extraction device located at the top of the furnace body 100 is lowered to control the insertion tube 210 to continue to be inserted to a preset depth; the above temperature detection-insertion tube 210 insertion to a preset depth is repeated until the insertion tube 210 is fully inserted.

[0066] The preset depth refers to the multiple preset descent depths within the lifting mechanism 310. Each descent depth represents the preset depth of the insertion tube 210 at its corresponding position. It should be understood that the specific value of the descent depth for each descent can be the same or different. For example, the deeper the insertion into the insulation outer layer 110, the higher the temperature of the insulation outer layer 110. The descent depth of the insertion tube 210 can be gradually reduced each time to maintain stable heat extraction. The preset temperature value can be determined based on the heat extraction capacity of the heat extraction network 200 and the descent temperature of the furnace body 100.

[0067] It is worth understanding that during the insertion of the insertion tube 210, the insertion tube 210 is inserted only to a preset depth, so that the contact area between the insertion tube 210 and the insulation material is fixed. As an insulation material, the insulation material has low heat transfer performance. When the temperature of the outer insulation material drops rapidly, the temperature of the inner layer will still be at a higher value, and the temperature change of the inner layer is small. Therefore, during the process of inserting the insertion tube 210 into the inner side of the outer insulation layer 110 from the outside, the insulation material cooled after each insertion is only the insulation material near the insertion depth, and it is unlikely to have a greater impact on the insulation material at deeper depths. This ensures that the heat removed from the insulation material by the insertion tube 210 each time it is inserted is similar. When the amount of heat removed is fixed, the temperature change of the medium can be adjusted by regulating the flow rate of the medium in the medium pipe. For example, at the initial insertion, when the temperature of the insulation material is high, the flow rate of the medium is increased, which increases the flow rate of the medium, shortens the heat exchange time with the insulation material, reduces the heat removed by the medium, and avoids a sudden temperature rise of the medium when the temperature of the insulation material is high. After a period of insertion, when the temperature of the insulation material drops to a lower state, the flow rate of the medium is decreased, which decreases the flow rate of the medium, increases the heat exchange time with the insulation material, increases the heat removed by the medium, and avoids a slow temperature rise of the medium when the temperature is low. When the temperature of the medium flowing through the medium pipeline fluctuates within a small range, the heat can be stably transferred to the waste heat utilization component, making it convenient for the waste heat utilization component to utilize the heat.

[0068] The following example illustrates a graphitization furnace with a portable high-temperature heat extraction device that uses water as the medium. It should be understood that the following content does not constitute a specific limitation on the present invention.

[0069] The graphitization furnace has a furnace body 100, which is surrounded by furnace walls made of refractory bricks. Electrodes are installed at both ends of the furnace body 100. An outer insulating layer 110 made of insulating material is installed on the front and rear side walls of the furnace body 100, as well as on the top and bottom of the furnace body 100, to completely cover the material cavity. Specifically, insulating material is first laid at the bottom of the furnace body 100, then the powder in the material cavity of the furnace body 100 is filled together with the insulating material on both sides, and finally, insulating material is laid on top of the material cavity and the surrounding insulating material, forming the outer insulating layer 110.

[0070] The casing 300 contains a dense network of heat extraction pipes 200, which includes a main inlet pipe, a main outlet pipe, multiple inlet headers, multiple outlet headers, multiple inlet branch pipes, and multiple outlet branch pipes. The multiple inlet headers are connected to the main inlet pipe, and each inlet header corresponds to one inlet branch pipe. The multiple outlet headers are connected to the main outlet pipe, and each outlet header corresponds to one outlet branch pipe. The main inlet pipe is equipped with an electric regulating valve, and the main outlet pipe is equipped with an electric shut-off valve. Multiple insertion pipes 210 share a single inlet branch pipe, and multiple insertion pipes 210 share a single outlet branch pipe. Each inlet branch pipe and outlet branch pipe is equipped with an electric shut-off valve.

[0071] Four hydraulic mechanisms are arranged on both sides of the cover 300. The hydraulic mechanisms are located on the bottom steel beam, and the hydraulic auxiliary equipment is located next to the hydraulic mechanisms. The four hydraulic mechanisms lift synchronously.

[0072] The insertion tube 210 is a round tube with an outer diameter of 0.15m and a high temperature resistance of 600℃. The heat extraction tube is 2m long. Before heat extraction, the insertion tube 210 is supported by the support mechanism and the cover 300 to be suspended above the furnace body 100. During the heat extraction stage, the heat extraction depth is controlled according to the temperature of the powder inside the furnace body 100, with a maximum powder insertion depth of 1.5m.

[0073] Driven by a hydraulic mechanism, the insertion tube 210 and the cover 300 are inserted into the outer insulation layer 110 at the top of the furnace body 100 from a suspended state to cool the outer insulation layer 110.

[0074] Water is used as the medium because it has a high specific heat capacity, can carry away a lot of heat, and has good heat exchange performance.

[0075] The following example illustrates a graphitization furnace with a portable high-temperature heat extraction device that uses carbon dioxide as the medium. It should be understood that the following content does not constitute a specific limitation on the present invention.

[0076] The graphitization furnace has a furnace body 100, which is surrounded by furnace walls made of refractory bricks. Electrodes are installed at both ends of the furnace body 100. An outer insulating layer 110 made of insulating material is installed on the front and rear side walls of the furnace body 100, and an outer insulating layer 110 made of insulating material is also installed on the top and bottom of the furnace body 100 to completely cover the material cavity. Specifically, insulating material is first laid at the bottom of the furnace body 100, then the powder in the material cavity of the furnace body 100 is filled together with the surrounding insulating material, and finally, the insulating material is laid on top of the material cavity and the surrounding insulating material, forming the outer insulating layer 110.

[0077] The casing 300 is densely covered with heat extraction pipes 200. The whole structure has one main inlet pipe, one main outlet pipe, one inlet header, one outlet header, multiple inlet branch pipes and multiple outlet branch pipes. The inlet header is connected to the main inlet pipe and to each inlet branch pipe. The outlet header is connected to the main outlet pipe and to each outlet branch pipe. Multiple insertion pipes 210 share one main inlet pipe and one main outlet pipe. The main inlet pipe is equipped with an electric regulating valve, and the main outlet pipe is equipped with an electric shut-off valve.

[0078] Four hydraulic mechanisms are arranged on both sides of the cover 300. The hydraulic mechanisms are located on the bottom steel beam, and the hydraulic auxiliary equipment is located next to the hydraulic mechanisms. The four hydraulic mechanisms lift synchronously.

[0079] The insertion tube 210 is a round tube with an outer diameter of 0.2m and a high temperature resistance of 600℃. The heat extraction tube is 2.5m long. Before heat extraction, the insertion tube 210 is supported by the support mechanism and the cover 300 to be suspended above the furnace body 100. During the heat extraction stage, the heat extraction depth is controlled according to the temperature of the powder inside the furnace body 100, with a maximum powder insertion depth of 2m.

[0080] Using carbon dioxide as a medium offers advantages such as stable performance, a wide operating temperature range, low leakage risk, and simple structure.

[0081] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A method for rapid cooling of a high-temperature kiln, characterized in that, include: Furnace body; A heat extraction pipe network is installed at the top of the furnace body and can be raised and lowered relative to the furnace body. The heat extraction pipe network includes multiple insertion pipes that extend toward the furnace body. Each insertion pipe has a medium flow channel that is connected to a medium source for medium to flow through. The heat extraction network also includes an inlet water network and an outlet water network. The inlet water network is connected to each of the medium flow channels and is used to connect to the medium source. The outlet water network is connected to each of the medium flow channels and is connected to the medium source or waste heat utilization device. A cover is provided on the top of the furnace body and connected to the furnace body through a lifting mechanism. The heat extraction pipe network is provided inside the cover and located on the side of the cover facing the furnace body. Several temperature sensing elements are located on the top of the furnace body, facing the furnace body, and the end of the temperature sensing element facing the furnace body is flush with the end of the insertion tube facing the furnace body, and can move together with the insertion tube; The end of the insertion tube extending toward the furnace body is provided with a wear-resistant head; During the kiln cooling stage, the heat extraction pipe network located at the top of the furnace body is lowered until the insertion pipe is inserted to the preset depth; The temperature at the insertion point of the insertion tube is detected. When the temperature drops to the preset temperature value, the heat exchange pipe network located at the top of the furnace body is lowered to control the insertion tube to continue to be inserted to the preset depth. Repeatedly check the temperature at the insertion position of the insertion tube - reduce the temperature to the preset value - insert the insertion tube to the preset depth until the insertion tube is fully inserted.

2. The rapid cooling method for high-temperature kilns according to claim 1, characterized in that: The water inlet network is connected to the medium source via a flexible hose, which is a flexible pipe structure that can withstand pressures above 0.2 MPa and temperatures above 200°C.

3. The rapid cooling method for high-temperature kilns according to claim 1, characterized in that: The insertion tube adopts a pipe structure with an outer diameter of 0.02m-0.3m, a length of 0.3m-5m, and a temperature resistance of over 600℃.

4. The rapid cooling method for high-temperature kilns according to any one of claims 1 to 3, characterized in that: The furnace body is a rectangular box structure. Two opposing electrodes are provided on the outer circumference of the furnace body. The material cavity of the furnace body is wrapped by an insulation outer layer. The insertion tube can be inserted into the top of the insulation outer layer.

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