Furnace starting method of reduction furnace and related device

Abstract

The invention discloses a furnace starting method of a reduction furnace, a furnace starting device of the reduction furnace, furnace starting equipment and a computer readable storage medium. The method comprises the steps that a reduction furnace controller executes nitrogen pressurizing operation; after the air tightness inspection of the reduction furnace is passed, heated liquid is introduced into the cooling pipeline, and the opening degree of the adjusting valve of each node is controlled to reach a first preset opening degree; after a first preset time, the opening degree of each regulating valve is controlled to reach a second preset opening degree; wherein the second preset opening degree is larger than the first preset opening degree; and after a second preset time, the furnace starting operation is executed. In a low-temperature environment in winter, hot water is introduced in advance to heat the furnace cover, so that the temperature in the furnace before the furnace is started is effectively increased, the silicon core gradually adapts to the environment with the increased temperature, and the furnace starting success rate of the reduction furnace under the extreme weather condition is remarkably increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of polysilicon production equipment, and more specifically, relates to a reduction furnace starting method, a reduction furnace starting device, a reduction furnace starting equipment, and a computer-readable storage medium. Background Art

[0002] In the field of polysilicon production, the reduction furnace is one of the key equipment, and its start-up process is crucial to product quality and production efficiency. Especially in winter, the temperature in northern regions is low, which puts higher requirements on the start-up process of the reduction furnace.

[0003] In the related technology, a major problem in the furnace startup process is that when the temperature in the furnace suddenly rises, the silicon core is prone to loosening at the connection with the base due to thermal expansion and contraction, resulting in the silicon rod being unable to grow normally or even causing the rod to fall over. This not only affects the success rate of the reduction furnace startup, but also reduces the quality and output of polysilicon products.

[0004] Therefore, how to provide a gradually adaptable high-temperature environment for the silicon core to avoid the risks caused by thermal expansion and contraction is a key issue that technical personnel in this field are concerned about. Summary of the invention

[0005] The purpose of the present application is to provide a method for starting a reduction furnace, a device for starting a reduction furnace, starting equipment, and a computer-readable storage medium. Before starting the furnace, the reduction furnace is gradually heated through a cooling pipeline to avoid the risks caused by thermal expansion and contraction. At the same time, the heating process does not require additional costs and can be achieved by using existing cooling pipelines.

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides a method for starting a reduction furnace, comprising:

[0007] The reduction furnace controller performs nitrogen pressurization operation;

[0008] When the reduction furnace passes the airtightness inspection, the heated liquid is introduced into the cooling pipeline, and the opening of the regulating valve at each node is controlled to a first preset opening;

[0009] After a first preset time has passed, the opening of each regulating valve is controlled to a second preset opening; wherein the second preset opening is greater than the first preset opening;

[0010] After the second preset time has passed, the furnace start-up operation is performed.

[0011] Optionally, the reduction furnace controller performs a nitrogen pressurization operation, including:

[0012] The reduction furnace controller performs a nitrogen purge operation;

[0013] When the nitrogen purge operation is completed, a preset number of pressurization replacement operations are performed on the oxygen in the reduction furnace using nitrogen, and when the pressurization replacement operation is completed, the pressure is released to a first preset pressure;

[0014] When the pressure in the reduction furnace is less than the first preset pressure, pressurizing the reduction furnace with nitrogen to a second preset pressure;

[0015] When the pressure in the reduction furnace is greater than or equal to the second preset pressure, a pressure maintaining operation is performed and an airtightness check is carried out.

[0016] Optionally, after the reduction furnace passes the airtightness inspection, the heated liquid is introduced into the cooling pipeline, and the opening of the regulating valve of each node is controlled to a first preset opening, including:

[0017] When the reduction furnace passes the airtightness inspection, the heated liquid is introduced into the cooling pipeline;

[0018] Control the opening of the regulating valves of all nodes to 5%; wherein all nodes include the chassis water node, the furnace water node, the front jacket water node, and the rear jacket water node.

[0019] Optionally, after a first preset time has passed, controlling the opening of each regulating valve to a second preset opening includes:

[0020] After the first preset time has passed, the openings of the regulating valves of all nodes are controlled to be 30%.

[0021] Optionally, also include:

[0022] After the heated liquid is introduced, the temperature of the reduction furnace is monitored;

[0023] When the temperature of the reduction furnace is greater than a preset temperature, a prompt message indicating that the heating is completed is sent.

[0024] The present application also provides a reduction furnace start-up device, comprising:

[0025] A nitrogen charging module, used for performing nitrogen charging operation;

[0026] A hot water circulation module, used for introducing heated liquid into the cooling pipeline after the reduction furnace passes the air tightness inspection, and controlling the opening of the regulating valve of each node to a first preset opening;

[0027] An opening adjustment module, used for controlling the opening of each regulating valve to a second preset opening after a first preset time has passed; wherein the second preset opening is greater than the first preset opening;

[0028] The furnace start-up operation module is used to perform the furnace start-up operation after a second preset time has passed.

[0029] Optionally, the nitrogen charging module comprises:

[0030] A nitrogen purge unit, used to perform a nitrogen purge operation;

[0031] A nitrogen replacement unit, used to perform a preset number of pressurizing and replacing operations on the oxygen in the reduction furnace using nitrogen when the nitrogen purge operation is completed, and to release the pressure to a first preset pressure when the pressurizing and replacing operations are completed;

[0032] A charging unit, used for charging the nitrogen in the reduction furnace to a second preset pressure when the pressure in the reduction furnace is less than the first preset pressure;

[0033] The pressure maintaining unit is used to perform a pressure maintaining operation and an air tightness check when the pressure in the reduction furnace is greater than or equal to the second preset pressure.

[0034] Optionally, the hot water circulation module comprises:

[0035] A hot water supply unit, used to supply heated liquid to the cooling pipeline after the reduction furnace passes the airtightness inspection;

[0036] The opening control unit is used to control the opening of the regulating valves of all nodes to 5%; wherein all nodes include the chassis water node, the furnace water node, the front jacket water node, and the rear jacket water node.

[0037] The present application also provides a furnace start-up device, comprising:

[0038] Memory for storing computer programs;

[0039] A processor is used to implement the steps of the furnace startup method as described above when executing the computer program.

[0040] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the furnace startup method as described above are implemented.

[0041] The present application provides a method for starting a reduction furnace, comprising: a reduction furnace controller performing a nitrogen pressurization operation; when the air tightness check of the reduction furnace is passed, a heated liquid is introduced into a cooling pipeline, and the opening of a regulating valve at each node is controlled to a first preset opening; after a first preset time has passed, the opening of each regulating valve is controlled to a second preset opening; wherein the second preset opening is greater than the first preset opening; and after the second preset time has passed, the furnace start-up operation is performed.

[0042] It has the following beneficial effects:

[0043] In winter, hot water is introduced in advance to heat the furnace cover, which effectively increases the furnace temperature before starting the furnace, allowing the silicon core to gradually adapt to the environment with higher temperature, thereby significantly improving the success rate of starting the reduction furnace under extreme climatic conditions. By slowly increasing the furnace temperature and assisting with nitrogen heating, the risk of loosening of the connection between the silicon core and the base due to thermal expansion and contraction is reduced, the phenomenon of silicon rod falling during the growth process is avoided, and the continuity and stability of silicon rod production are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0045] Figure 1 A flow chart of a method for starting a reduction furnace provided in an embodiment of the present application;

[0046] Figure 2 A schematic diagram of the structure of a reduction furnace start-up device provided in an embodiment of the present application;

[0047] Figure 3 This is a schematic diagram of the structure of the furnace starting equipment provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The core of the present application is to provide a method for starting a reduction furnace, a device for starting a reduction furnace, starting equipment, and a computer-readable storage medium. Before starting the furnace, the reduction furnace is gradually heated through a cooling pipeline to avoid the risks caused by thermal expansion and contraction. At the same time, the heating process does not require additional costs and can be achieved by using existing cooling pipelines.

[0049] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] The following is an example of an example of a method for starting a reduction furnace provided in the present application.

[0051] Please refer to Figure 1 , Figure 1 A flow chart of a method for starting a reduction furnace provided in an embodiment of the present application.

[0052] In this embodiment, the method may include:

[0053] S101, the reduction furnace controller performs nitrogen pressurization operation;

[0054] This step is intended to enable the reduction furnace controller to perform nitrogen pressurization operations.

[0055] The furnace start-up method performs nitrogen pressure charging operation through the reduction furnace controller. The nitrogen can be heated nitrogen. The heating operation is realized in stages. This staged temperature increase effectively avoids the thermal expansion and contraction phenomenon of the connection between the silicon core and the base caused by the sudden change of temperature, thereby significantly improving the success rate of furnace start-up and ensuring the continuity and stability of silicon rod production.

[0056] Furthermore, this step may include:

[0057] Step 1, the reduction furnace controller performs a nitrogen purge operation;

[0058] Step 2, when the nitrogen purge operation is completed, a preset number of pressurization replacement operations are performed on the oxygen in the reduction furnace using nitrogen, and when the pressurization replacement operation is completed, the pressure is released to a first preset pressure;

[0059] Step 3, when the pressure in the reduction furnace is less than the first preset pressure, pressurizing the reduction furnace with nitrogen to a second preset pressure;

[0060] Step 4: When the pressure in the reduction furnace is greater than or equal to the second preset pressure, a pressure-maintaining operation is performed and an air-tightness check is performed.

[0061] It can be seen that this optional solution mainly explains how to perform nitrogen pressurization operation. This optional solution mainly involves first purging other gases, then performing oxygen replacement operation, performing pressure relief and then pressure increase, and finally maintaining pressure, thereby improving the effect of nitrogen pressurization.

[0062] By adding nitrogen purging and pressure replacement steps to the nitrogen pressure charging operation, the present invention further purifies the furnace environment and removes impurity gases and oxygen that may affect the success rate of furnace startup. Pressure relief and pressure holding operations ensure accurate control of the pressure in the furnace, provide a stable and safe environment for subsequent heating and furnace startup operations, and further improve the reliability of furnace startup.

[0063] S102, when the air tightness inspection of the reduction furnace is passed, the heated liquid is introduced into the cooling pipeline, and the opening of the regulating valve of each node is controlled to a first preset opening;

[0064] Based on S101, this step aims to introduce heated liquid into the cooling pipeline after the air tightness inspection of the reduction furnace passes, and control the opening of the regulating valve of each node to a first preset opening;

[0065] Furthermore, this step may include:

[0066] Step 1, after the reduction furnace passes the air tightness inspection, the heated liquid is introduced into the cooling pipeline;

[0067] Step 2, controlling the opening of the regulating valves of all nodes to 5%; wherein all nodes include the chassis water node, the furnace water node, the front jacket water node, and the rear jacket water node.

[0068] After the air tightness check is passed, heated liquid is introduced into the cooling pipeline, and the opening of the regulating valves at all nodes is initially controlled to 5%. This step provides a gentle preheating process for the furnace. This preheating helps to evenly distribute heat and reduce the risk of local overheating. At the same time, it provides an opportunity for the silicon core to gradually adapt to the high temperature environment, effectively reducing the risk of furnace startup failure caused by rapid temperature changes.

[0069] S103, after a first preset time has passed, controlling the opening of each regulating valve to a second preset opening; wherein the second preset opening is greater than the first preset opening;

[0070] Based on S102, this step aims to control the opening of each regulating valve to a second preset opening after the first preset time has passed; wherein the second preset opening is greater than the first preset opening;

[0071] Furthermore, this step may include:

[0072] After the first preset time has passed, the openings of the regulating valves of all nodes are controlled to be 30%.

[0073] After the first preset time, the opening of the regulating valve is increased to a second preset opening of 30%, which provides a further increase in the temperature in the furnace while maintaining the gradual increase in temperature. This staged temperature control strategy helps ensure that the silicon core is evenly heated throughout the entire furnace startup process, reduces thermal stress caused by excessive temperature gradients, and further improves the stability of the furnace startup and the quality of the silicon rods.

[0074] S104, after the second preset time has passed, the furnace start-up operation is performed.

[0075] Based on S103, this step aims to execute the furnace start-up operation after the second preset time has passed.

[0076] Furthermore, this embodiment may also include:

[0077] Step 1, after the heated liquid is introduced, the temperature of the reduction furnace is monitored;

[0078] Step 2: When the temperature of the reduction furnace is greater than the preset temperature, a prompt message indicating that the heating is completed is sent.

[0079] The present invention provides a real-time feedback mechanism by monitoring the temperature of the reduction furnace and sending a prompt message indicating that heating is completed when the temperature reaches a preset value. This not only improves the controllability of the furnace startup process, but also allows operators to adjust the operation steps in a timely manner to ensure the accuracy and efficiency of the furnace startup process, while avoiding furnace startup failures or product quality problems caused by overheating or insufficient heating.

[0080] In summary, this embodiment heats the furnace cover by introducing hot water in advance, effectively increasing the furnace temperature before starting the furnace, allowing the silicon core to gradually adapt to the environment with increased temperature, thereby significantly improving the success rate of starting the reduction furnace under extreme climatic conditions. By slowly increasing the temperature in the furnace and assisting with nitrogen heating, the risk of loosening of the connection between the silicon core and the base due to thermal expansion and contraction is reduced, the phenomenon of silicon rod falling during the growth process is avoided, and the continuity and stability of silicon rod production are guaranteed.

[0081] The following further illustrates a method for starting a reduction furnace of the present application through another specific embodiment.

[0082] The implementation environment of this embodiment:

[0083] This example is set in a polysilicon production plant in the north where the temperature is low in winter. The plant is equipped with multiple reduction furnaces for producing polysilicon. The ambient temperature is -10°C to -20°C, a typical low temperature environment in winter.

[0084] Preparation for implementation of this embodiment:

[0085] Check the connection between the silicon core and the base of all reduction furnaces to ensure that they are not loose or damaged. Prepare the nitrogen source and pressure control system to ensure that nitrogen purging and pressure replacement can be performed. Prepare the hot water supply system to ensure that the furnace cover can be heated.

[0086] The implementation steps of this embodiment may include:

[0087] Step 1, nitrogen purging: After installing the silicon core and closing the furnace cover, first perform nitrogen purging for 30 minutes to remove possible impurity gases in the furnace.

[0088] Step 2, nitrogen pressure replacement: nitrogen is pressurized to 0.5MPa for 4 times, and the pressure is released to 0.01MPa after each pressurization to ensure that the oxygen in the furnace is effectively replaced.

[0089] Step 3, air tightness check: After the nitrogen is pressurized to 0.55MPa, perform an air tightness check to ensure there is no leakage.

[0090] Step 4, hot water preheating: Through the hot water supply system, introduce hot water into the bottom pan water, furnace drum water, front jacket water and rear jacket water of the furnace cover in advance, and open the regulating valve FV04A0501 to the set opening (tentatively set to 5%) and maintain it for 15 minutes.

[0091] Step 5, temperature adjustment: within 20 minutes from the current opening, open the regulating valve to the set opening (tentatively set at 30%), and extend the preparation time before starting the furnace to slowly increase the temperature in the furnace.

[0092] Step 6, nitrogen heating assistance: While the hot water is preheating, nitrogen is used for heating assistance, and the temperature inside the furnace is heated in conjunction with the hot water circulation in the furnace cover.

[0093] Step 7, furnace start: After completing the above steps, the high-pressure furnace is started. At this time, since the temperature in the furnace has slowly increased, the silicon core can be successfully lit and continue to grow into a silicon rod.

[0094] By implementing the above steps, the success rate of the reduction furnace startup was significantly improved. In the low temperature environment in winter, the slow increase in the temperature in the furnace effectively avoided the thermal expansion and contraction of the connection between the silicon core and the base, and reduced the phenomenon of silicon rod falling during the growth process. There was no failure in the furnace startup during the production process, and the quality and output of silicon rods were improved. In addition, due to the more stable furnace startup process, production costs were effectively saved, and the market competitiveness of polysilicon products was enhanced.

[0095] The following is an introduction to the reduction furnace start-up device provided in the embodiment of the present application. The reduction furnace start-up device and the reduction furnace start-up method described below can be referenced to each other.

[0096] Please refer to Figure 2 , Figure 2 A schematic structural diagram of a reduction furnace start-up device provided in an embodiment of the present application.

[0097] In this embodiment, the device may include:

[0098] A nitrogen charging module 100, used to perform a nitrogen charging operation;

[0099] The hot water circulation module 200 is used to pass the heated liquid into the cooling pipeline after the air tightness inspection of the reduction furnace is passed, and control the opening of the regulating valve of each node to a first preset opening;

[0100] The opening adjustment module 300 is used to control the opening of each regulating valve to a second preset opening after a first preset time has passed; wherein the second preset opening is greater than the first preset opening;

[0101] The furnace start-up operation module 400 is used to perform a furnace start-up operation after a second preset time has passed.

[0102] Optionally, the nitrogen charging module 100 may include:

[0103] A nitrogen purge unit, used to perform a nitrogen purge operation;

[0104] A nitrogen replacement unit, used to perform a preset number of pressurizing and replacing operations on the oxygen in the reduction furnace using nitrogen when the nitrogen purge operation is completed, and to release the pressure to a first preset pressure when the pressurizing and replacing operations are completed;

[0105] A charging unit, used for charging the nitrogen in the reduction furnace to a second preset pressure when the pressure in the reduction furnace is less than the first preset pressure;

[0106] The pressure maintaining unit is used to perform a pressure maintaining operation and an air tightness check when the pressure in the reduction furnace is greater than or equal to a second preset pressure.

[0107] Optionally, the hot water circulation module 200 may include:

[0108] A hot water supply unit is used to supply heated liquid to the cooling pipeline after the reduction furnace passes the air tightness inspection;

[0109] The opening control unit is used to control the opening of the regulating valves of all nodes to 5%; wherein all nodes include the chassis water node, the furnace water node, the front jacket water node, and the rear jacket water node.

[0110] This application also provides furnace start-up equipment, please refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of the furnace start-up equipment provided in an embodiment of the present application. The furnace start-up equipment may include:

[0111] Memory for storing computer programs;

[0112] The processor is used to implement the steps of any one of the above-mentioned reduction furnace startup methods when executing a computer program.

[0113] like Figure 3 , which is a schematic diagram of the composition structure of the furnace start-up device, the furnace start-up device may include: a processor 10, a memory 11, a communication interface 12 and a communication bus 13. The processor 10, the memory 11, and the communication interface 12 all communicate with each other through the communication bus 13.

[0114] In the embodiment of the present application, the processor 10 may be a central processing unit (CPU), an application specific integrated circuit, a digital signal processor, a field programmable gate array or other programmable logic devices.

[0115] The processor 10 may call a program stored in the memory 11. Specifically, the processor 10 may execute operations in an embodiment of the abnormal IP identification method.

[0116] The memory 11 is used to store one or more programs, which may include program codes, and the program codes include computer operation instructions. In the embodiment of the present application, the memory 11 at least stores programs for implementing the following functions:

[0117] The reduction furnace controller performs nitrogen pressurization operation;

[0118] When the reduction furnace passes the airtightness inspection, the heated liquid is introduced into the cooling pipeline, and the opening of the regulating valve at each node is controlled to a first preset opening;

[0119] After a first preset time has passed, the opening of each regulating valve is controlled to a second preset opening; wherein the second preset opening is greater than the first preset opening;

[0120] After the second preset time has passed, the furnace start-up operation is performed.

[0121] In a possible implementation, the memory 11 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function, etc.; the data storage area may store data created during use.

[0122] In addition, the memory 11 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device or other volatile solid-state storage device.

[0123] The communication interface 12 may be an interface of a communication module, and is used to connect to other devices or systems.

[0124] Of course, it should be noted that Figure 3 The structure shown does not constitute a limitation on the furnace start-up device in the embodiment of the present application. In actual applications, the furnace start-up device may include Figure 3 More or fewer components than shown, or combinations of certain components.

[0125] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of any one of the above-mentioned reduction furnace startup methods can be implemented.

[0126] The computer-readable storage medium may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0127] For an introduction to the computer-readable storage medium provided in this application, please refer to the above method embodiment, and this application will not go into details here.

[0128] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0129] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0130] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0131] The above is a detailed introduction to a reduction furnace startup method, a reduction furnace startup device, a startup device, and a computer-readable storage medium provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A method for starting a reduction furnace, characterized in that: include: The reduction furnace controller performs nitrogen pressurization operation; When the reduction furnace passes the airtightness inspection, the heated liquid is introduced into the cooling pipeline, and the opening of the regulating valve at each node is controlled to a first preset opening; After a first preset time has passed, the opening of each regulating valve is controlled to a second preset opening; wherein the second preset opening is greater than the first preset opening; After the second preset time has passed, the furnace start-up operation is performed.

2. The furnace start-up method according to claim 1, characterized in that: The reduction furnace controller performs nitrogen pressurization operations, including: The reduction furnace controller performs a nitrogen purge operation; When the nitrogen purge operation is completed, a preset number of pressurization replacement operations are performed on the oxygen in the reduction furnace using nitrogen, and when the pressurization replacement operation is completed, the pressure is released to a first preset pressure; When the pressure in the reduction furnace is less than the first preset pressure, pressurizing the reduction furnace with nitrogen to a second preset pressure; When the pressure in the reduction furnace is greater than or equal to the second preset pressure, a pressure maintaining operation is performed and an airtightness check is carried out.

3. The furnace start-up method according to claim 2, characterized in that: When the reduction furnace passes the air tightness inspection, the heated liquid is introduced into the cooling pipeline, and the opening of the regulating valve of each node is controlled to a first preset opening, including: When the reduction furnace passes the airtightness inspection, the heated liquid is introduced into the cooling pipeline; Control the opening of the regulating valves of all nodes to 5%; wherein all nodes include the chassis water node, the furnace water node, the front jacket water node, and the rear jacket water node.

4. The furnace startup method according to claim 3, characterized in that: After the first preset time has passed, controlling the opening of each regulating valve to a second preset opening includes: After the first preset time has passed, the openings of the regulating valves of all nodes are controlled to be 30%.

5. The furnace start-up method according to claim 4, characterized in that: Also includes: After the heated liquid is introduced, the temperature of the reduction furnace is monitored; When the temperature of the reduction furnace is greater than a preset temperature, a prompt message indicating that the heating is completed is sent.

6. A reduction furnace start-up device, characterized in that: include: A nitrogen charging module, used for performing nitrogen charging operation; A hot water circulation module, used for introducing heated liquid into the cooling pipeline after the reduction furnace passes the air tightness inspection, and controlling the opening of the regulating valve of each node to a first preset opening; An opening adjustment module, used for controlling the opening of each regulating valve to a second preset opening after a first preset time has passed; wherein the second preset opening is greater than the first preset opening; The furnace start-up operation module is used to perform the furnace start-up operation after a second preset time has passed.

7. The furnace start-up device according to claim 6, characterized in that: The nitrogen charging module comprises: A nitrogen purge unit, used to perform a nitrogen purge operation; A nitrogen replacement unit, used to perform a preset number of pressurizing and replacing operations on the oxygen in the reduction furnace using nitrogen when the nitrogen purge operation is completed, and to release the pressure to a first preset pressure when the pressurizing and replacing operations are completed; A charging unit, used for charging the nitrogen in the reduction furnace to a second preset pressure when the pressure in the reduction furnace is less than the first preset pressure; The pressure maintaining unit is used to perform a pressure maintaining operation and an air tightness check when the pressure in the reduction furnace is greater than or equal to the second preset pressure.

8. The furnace start-up device according to claim 7, characterized in that: The hot water circulation module comprises: A hot water supply unit, used to supply heated liquid to the cooling pipeline after the reduction furnace passes the airtightness inspection; The opening control unit is used to control the opening of the regulating valves of all nodes to 5%; wherein all nodes include the chassis water node, the furnace water node, the front jacket water node, and the rear jacket water node.

9. A furnace start-up device, characterized in that: include: Memory for storing computer programs; A processor, configured to implement the steps of the furnace startup method as described in any one of claims 1 to 5 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the furnace startup method as described in any one of claims 1 to 5 are implemented.

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