Blast furnace system and control method thereof

Abstract

The invention discloses a blast furnace system and a control method thereof. The blast furnace system comprises a blast furnace; the dust removal cover covers the blast furnace, and a dust removal pipeline is connected to the dust removal cover; the water slag flushing white elimination cover is connected with the dust removal pipeline through a steam pipeline, and a steam valve is arranged on the steam pipeline; an inlet of the dust removal assembly is connected with the dust removal cover through a dust removal pipeline, an outlet of the dust removal assembly is connected with an exhaust pipeline, and a dust detection device and a dust removal fan are arranged on the exhaust pipeline; an inlet of the dust removal chimney is connected with the exhaust pipeline; the hot-blast stove is connected with the blast furnace through a hot-blast pipeline, and a combustion-supporting air port of the hot-blast stove is connected with an air outlet of the dedusting chimney through a combustion-supporting air pipeline; the combustion-supporting fan is arranged on the combustion-supporting air pipeline; and the controller is electrically connected with the dust detection device and the steam valve, and the controller is configured to control the opening degree of the steam valve according to the dust content. The heat energy utilization rate is greatly improved and the energy consumption of the whole blast furnace system is reduced.

Description

Technical Field

[0001] This application belongs to the field of blast furnace metallurgical equipment technology, and in particular relates to a blast furnace system and its control method. Background Technology

[0002] The steel smelting process generates a large amount of dust, which contains valuable metals such as iron and zinc. If this dust is discharged directly without effective treatment, it will not only waste resources but also cause serious environmental pollution. Currently, dust removal in front of the blast furnace mainly adopts bag filter technology. Although it can effectively remove dust, it has high energy consumption and low thermal energy utilization. A large amount of steam generated by the water flushing slag system is directly emitted into the atmosphere, resulting in a significant waste of energy. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a blast furnace system and its control method, which greatly improves thermal energy utilization and reduces the energy consumption of the entire blast furnace system.

[0004] In a first aspect, this application provides a blast furnace system, comprising:

[0005] blast furnace;

[0006] A dust collector hood is installed outside the blast furnace, and dust collection pipelines are connected to the dust collector hood.

[0007] The water-flushing slag and whitening hood is connected to the dust removal pipeline via a steam pipeline, and a steam valve is installed on the steam pipeline.

[0008] The dust removal component has an inlet connected to the dust removal hood via a dust removal pipe, and an outlet connected to an exhaust pipe, which is equipped with a dust detection device and a dust removal fan.

[0009] Dust collection chimney, the inlet of the dust collection chimney is connected to the exhaust pipe;

[0010] The hot blast stove is connected to the blast furnace via a hot blast pipeline, and the combustion air inlet of the hot blast stove is connected to the air outlet of the dust removal chimney via a combustion air pipeline.

[0011] Combustion-supporting blower, installed on the combustion-supporting air pipeline;

[0012] The controller is electrically connected to the dust detection device and the steam valve, and is configured to control the opening degree of the steam valve according to the dust content.

[0013] According to the blast furnace system of this application, the dust from the furnace front dust removal is mixed with the slag-flushing steam in a certain proportion for dust removal, making full use of the characteristics of steam, improving the dust removal effect, and reducing the pollution and waste caused by the direct emission of steam into the atmosphere; and the high-temperature gas after dust removal is introduced into the hot blast stove as combustion air, realizing the secondary utilization of thermal energy, further improving the utilization efficiency of thermal energy, and greatly reducing the energy consumption of the entire blast furnace system. It has good environmental benefits, reduces the production cost of enterprises, and enhances the competitiveness of enterprises.

[0014] According to one embodiment of this application, the exhaust pipeline includes a bypass pipe and a fine dust removal pipe connected in parallel between the dust removal fan and the dust removal assembly. The bypass pipe is provided with a bypass valve, and the fine dust removal pipe is provided with a bag filter and a fine dust removal valve. The fine dust removal valve is located on the side of the bag filter closer to the dust removal assembly. A dust detection device is located between the fine dust removal pipeline and the dust assembly. The controller is electrically connected to the bypass valve and the fine dust removal valve.

[0015] According to one embodiment of this application, a humidity detection device and a combustion air valve are arranged sequentially along the flow direction on the pipeline between the air outlet of the dust removal chimney and the combustion air fan. An air pipeline is connected to the pipeline between the combustion air valve and the combustion air fan. The air pipeline is connected to the atmosphere. An air valve is provided on the air pipeline. The controller is electrically connected to the humidity monitoring device, the combustion air valve and the air valve.

[0016] According to one embodiment of this application, the blast furnace system further includes:

[0017] The flue gas outlet of the hot air furnace is connected to the flue gas chimney through a flue gas pipe;

[0018] The first heat exchanger has a first heat exchange pipe and a second heat exchange pipe that can exchange heat with each other. The first heat exchange pipe is connected in series with the flue gas pipe, and the second heat exchange pipe is connected in series with the combustion air pipe.

[0019] According to one embodiment of this application, the blast furnace system further includes:

[0020] The second heat exchanger has a third heat exchange pipeline and a fourth heat exchange pipeline that can exchange heat with each other. The third heat exchange pipeline is connected in series with the flue gas pipeline. The combustion air pipeline includes a first combustion air pipe and a second combustion air pipe connected in parallel between the combustion air blower and the hot air furnace. The fourth heat exchange pipeline is connected in series with the first combustion air pipe.

[0021] According to one embodiment of this application, the dust removal assembly includes a gravity dust collector and a cyclone dust collector arranged in series. The inlet of the gravity dust collector is connected to a dust removal pipeline, and the outlet of the cyclone dust collector is connected to an exhaust pipeline.

[0022] Secondly, this application provides a control method for a blast furnace system according to any of the technical solutions in the first aspect, the control method comprising:

[0023] Control the steam valve to open to the preset opening degree;

[0024] Obtain the dust content of the exhaust pipe;

[0025] When the dust content is not lower than the first dust threshold, the opening degree of the control steam valve is increased by the set opening value.

[0026] According to the control method for the blast furnace system provided in this application, the steam valve opening is dynamically adjusted based on the real-time dust content, enabling the system to adapt to dust treatment needs under different operating conditions and improving the stability of dust removal efficiency. This avoids excessive steam introduction, reducing energy waste while ensuring dust removal efficiency. Through intelligent adjustment, this control method significantly improves the dust removal efficiency and environmental performance of the blast furnace system without increasing additional energy consumption.

[0027] According to one embodiment of this application, the exhaust pipeline includes a bypass pipe and a fine dust removal pipe connected in parallel between the dust removal fan and the dust removal assembly. A bypass valve is provided on the bypass pipe, and a bag filter and a fine dust removal valve are provided on the fine dust removal pipe. A dust detection device is provided between the fine dust removal pipeline and the dust assembly, and a controller is electrically connected to the bypass valve and the fine dust removal valve.

[0028] Control methods also include:

[0029] When the dust content is not lower than the second dust threshold, the fine dust removal valve is opened and the bypass valve is closed, wherein the first dust threshold is lower than the second dust threshold.

[0030] When the dust content is below the first dust threshold, the bypass valve is opened and the fine dust removal valve is closed.

[0031] According to one embodiment of this application, when the dust content is not lower than a first dust threshold, controlling the opening degree of the steam valve to increase by a set opening value includes:

[0032] When the dust content is below the third dust threshold and not below the first dust threshold, the opening degree of the steam valve is increased by a first proportion.

[0033] When the dust content is below the fourth dust threshold and not below the third dust threshold, the opening degree of the control steam valve is increased by a second proportion.

[0034] When the dust content is below the second dust threshold and not below the fourth dust threshold, the opening degree of the control steam valve is increased by a third proportion.

[0035] Among them, the first dust threshold, the third dust threshold, the fourth dust threshold and the second dust threshold increase step by step, and the first proportion, the second proportion and the third proportion increase step by step.

[0036] According to one embodiment of this application, the blast furnace system further includes a hot blast stove, which is connected to the blast furnace via a hot blast pipeline. The combustion air inlet of the hot blast stove is connected to the outlet of the dust removal chimney via a combustion air pipeline. A combustion air fan is provided on the combustion air pipeline. A humidity detection device and a combustion air valve are arranged sequentially along the flow direction on the pipeline between the outlet of the dust removal chimney and the combustion air fan. An air pipeline is connected to the pipeline between the combustion air valve and the combustion air fan. The air pipeline is connected to the atmosphere. An air valve is provided on the air pipeline. The controller is electrically connected to the humidity monitoring device, the combustion air valve, and the air valve.

[0037] Control methods also include:

[0038] Obtain the humidity value at the outlet of the dust collection chimney;

[0039] When the humidity value is not greater than the humidity threshold, control the combustion air valve to open and control the air pipeline to close.

[0040] When the humidity value is greater than the humidity threshold, the control air valve opens and the control combustion air valve closes.

[0041] Thirdly, this application provides a control device for a blast furnace system, the device comprising:

[0042] The first control module is used to control the steam valve to open to a preset degree.

[0043] The first acquisition module is used to acquire the dust content of the exhaust pipe;

[0044] The second control module is used to increase the opening degree of the steam valve by a set value when the dust content is not lower than the first dust threshold.

[0045] The control device for the blast furnace system according to this application dynamically adjusts the steam valve opening based on the real-time dust content, enabling the system to adapt to dust handling requirements under different operating conditions and improving the stability of dust removal efficiency. It avoids excessive steam introduction, reducing energy waste while ensuring dust removal effectiveness. This control method, through intelligent adjustment, significantly improves the dust removal efficiency and environmental performance of the blast furnace system without increasing additional energy consumption.

[0046] Fourthly, this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the control method of the blast furnace system as described in the second aspect above.

[0047] Fifthly, this application provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the control method for the blast furnace system as described in the second aspect above.

[0048] In a sixth aspect, this application provides a chip including a processor and a communication interface, the communication interface and the processor being coupled together, the processor being used to run programs or instructions to implement the control method of the blast furnace system as described in the second aspect.

[0049] In a seventh aspect, this application provides a computer program product, including a computer program that, when executed by a processor, implements the control method for the blast furnace system as described in the second aspect above.

[0050] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0051] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0052] Figure 1 This is a schematic diagram of the blast furnace system provided in the embodiments of this application;

[0053] Figure 2 This is a flowchart illustrating the control method for a blast furnace system provided in an embodiment of this application;

[0054] Figure 3 This is a schematic diagram of the structure of the control device for the blast furnace system provided in the embodiments of this application;

[0055] Figure 4 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application.

[0056] Figure label:

[0057] 100. Blast Furnace System; 1. Blast Furnace; 2. Dust Hood; 3. Dust Collection Pipeline; 4. Water-flushing Slag Removal Hood; 5. Steam Valve; 6. Dust Collection Components; 7. Gravity Dust Collector; 8. Cyclone Dust Collector; 9. Exhaust Pipeline; 10. Bypass Pipeline; 11. Bypass Valve; 12. Fine Dust Collection Pipeline; 13. Fine Dust Collection Valve; 14. Bag Filter; 15. Dust Detection Device; 16. Dust Collector Fan; 17. Dust Collector Chimney; 18. Hot Blast Stove; 19. Combustion Air Pipeline; 20. Combustion Air Fan; 21. Humidity Detection Device; 22. Combustion Air Valve; 23. First Combustion Air Pipeline; 24. Second Combustion Air Pipeline; 25. Air Pipeline; 26. Air Valve; 27. Exhaust Chimney; 28. First Heat Exchanger; 29. ​​Second Heat Exchanger; 30. Hot Air Pipeline;

[0058] 310. First control module; 320. First acquisition module; 330. Second control module;

[0059] 400. Electronic device; 401. Processor; 402. Memory. Detailed Implementation

[0060] The embodiments of this application are described in detail below. Examples of the 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 this application, and should not be construed as limiting this application.

[0061] The following is for reference. Figure 1 Describes a blast furnace system and its control method according to embodiments of this application.

[0062] Please see Figure 1 According to some embodiments of this application, the blast furnace system 100 includes: a blast furnace 1, a dust removal hood 2, a water-flushing slag whitening hood 4, a dust removal assembly 6, a dust removal chimney 17, a hot blast stove 18, a combustion fan 20, and a controller.

[0063] Dust hood 2 is installed outside blast furnace 1, and dust removal pipeline is connected to dust hood 2.

[0064] Blast furnace 1 is the core equipment for steel smelting. The dust collector hood 2 has an overall hood-like structure, its size and shape adapted to the external contours of blast furnace 1. It is securely installed outside blast furnace 1 through welding, bolting, or other methods. Its function is to collect the dust generated during the smelting process in blast furnace 1, preventing the dust from directly escaping into the environment. Dust collection pipelines are connected to the dust collector hood 2. These pipelines can be made of metal and can be connected by welding, flanges, or other methods. They are used to transport the dust collected by the dust collector hood 2 to subsequent processing components.

[0065] The water-flushing slag removal hood 4 is connected to the dust removal pipeline via a steam pipeline, and a steam valve 5 is installed on the steam pipeline.

[0066] The water-flushing slag removal hood 4 is used to collect the steam generated by the water-flushing slag removal system. It is connected to the dust removal pipeline through a steam pipeline, which can be welded or flanged. The steam valve 5 installed on the steam pipeline can be an electric regulating valve or a pneumatic regulating valve, etc., and its function is to control the flow rate of steam from the water-flushing slag removal hood 4 into the dust removal pipeline.

[0067] The inlet of the dust removal component 6 is connected to the dust removal hood 2 through a dust removal pipeline, and the outlet of the dust removal component 6 is connected to an exhaust pipeline 9. The exhaust pipeline 9 is equipped with a dust detection device 15 and a dust removal fan 16.

[0068] The dust collection component 6 is a key component for dust purification. Its inlet is connected to the dust collection hood 2 via a dust collection pipeline, and its outlet is connected to the exhaust pipeline 9. The dust collection component 6 can include common dust collection equipment such as a bag filter 14, an electrostatic precipitator, a gravity dust collector 7, and a cyclone dust collector 8, etc., and is not specifically limited. Its function is to remove dust from the incoming mixture of dust and vapor. A dust detection device 15, such as a laser dust detector, is installed on the exhaust pipeline 9 to detect the dust content in the gas after it has been treated by the dust collection component 6 in real time. The dust collection fan 16 provides power for the flow of gas in the pipeline, and its appropriate power and model can be selected according to actual needs.

[0069] The inlet of the dust removal chimney 17 is connected to the exhaust pipe 9; the hot blast stove 18 is connected to the blast furnace 1 through the hot blast pipe 30, and the combustion air port of the hot blast stove 18 is connected to the air outlet of the dust removal chimney 17 through the combustion air pipe 1925; the combustion air fan 20 is installed on the combustion air pipe 1925.

[0070] The inlet of the dust removal chimney 17 is connected to the exhaust pipe 9 to discharge the gas after dust removal treatment into the atmosphere. Its height and diameter are designed according to actual emission requirements. The dust removal chimney 17 may be equipped with an outlet. The hot blast stove 18 is connected to the blast furnace 1 via the hot blast pipe 30 to provide hot blast for smelting in the blast furnace 1. Its combustion air inlet is connected to the outlet of the dust removal chimney 17 via the combustion air pipe 1925, and the connection can be made by welding or flange connection. The combustion air fan 20 installed on the combustion air pipe 1925 can be a centrifugal fan, axial flow fan, etc., used to transport the high-temperature gas discharged from the dust removal chimney 17 to the hot blast stove 18 as combustion air.

[0071] The controller is electrically connected to the dust detection device 15 and the steam valve 5, and the controller is configured to control the opening degree of the steam valve 5 according to the dust content.

[0072] The controller is configured to precisely control the opening of the steam valve 5 based on the dust content data fed back by the dust detection device 15, thereby adjusting the mixing ratio of water flushing slag steam and dust collected in front of the furnace.

[0073] In actual operation, dust generated during blast furnace 1 smelting is collected by dust collector hood 2 and enters dust collector assembly 6 through dust collection pipeline. Simultaneously, steam collected by water-flushing slag whitening hood 4, under the control of steam valve 5, enters the dust collection pipeline in a certain proportion to mix with the dust, and then both enter the dust collector assembly 6 for dust removal. The gas after dust removal enters the dust collection chimney 17 through exhaust pipe 9 under the action of dust collector fan 16, and is finally discharged into the atmosphere. The high-temperature gas discharged from dust collection chimney 17 is introduced into hot blast stove 18 as combustion air through combustion air pipeline 1925 under the action of combustion air fan 20. During this process, the controller monitors the data from dust detection device 15 in real time, adjusts the opening of steam valve 5 according to dust content, optimizes the mixing ratio, and improves the dust removal effect.

[0074] According to the blast furnace system 100 of this application, the dust from the furnace front dust removal is mixed with the slag-flushing steam in a certain proportion for dust removal, making full use of the characteristics of steam, improving the dust removal effect, and reducing the pollution and waste caused by the direct emission of steam into the atmosphere; and the high-temperature gas after dust removal is introduced into the hot blast stove 18 as combustion air, realizing the secondary utilization of thermal energy, further improving the utilization efficiency of thermal energy, and greatly reducing the energy consumption of the entire blast furnace system 100. It has good environmental benefits, reduces the production cost of enterprises, and enhances the competitiveness of enterprises.

[0075] Please see Figure 1 According to some embodiments of this application, the exhaust pipe 9 may include a bypass pipe 10 and a fine dust removal pipe 12 connected in parallel between the dust removal fan 16 and the dust removal assembly 6. The bypass pipe 10 is provided with a bypass valve 11, and the fine dust removal pipe 12 is provided with a bag filter 14 and a fine dust removal valve 13. The fine dust removal valve 13 is located on the side of the bag filter 14 near the dust removal assembly 6. The dust detection device 15 is located between the fine dust removal pipe 12 and the dust assembly, and the controller is electrically connected to the bypass valve 11 and the fine dust removal valve 13.

[0076] The exhaust pipe 9 includes a bypass pipe 10 and a fine dust removal pipe 12 connected in parallel, both of which are connected between the dust removal fan 16 and the dust removal assembly 6. The diameters of the bypass pipe 10 and the fine dust removal pipe 12 can be designed according to actual flow requirements, and the material can be metal pipes. The function of the bypass pipe 10 is to allow gas to pass directly without fine dust removal under certain conditions; the bypass valve 11 is installed on the bypass pipe 10, and can be an electric butterfly valve, pneumatic ball valve, etc., used to control the opening and closing of the bypass pipe 10 and to regulate the flow.

[0077] A bag filter 14 and a fine dust removal valve 13 are installed on the fine dust removal pipe 12. The bag filter 14 adopts the principle of filtration dust removal, removing fine dust from the gas through filter bags. Its model and specifications are selected according to actual treatment requirements. The fine dust removal valve 13 is installed on the side of the bag filter 14 near the dust collection component 6. It can also be an electric butterfly valve, pneumatic ball valve, etc., used to control the opening and closing of the fine dust removal pipe 12 and the gas flow rate entering the bag filter 14.

[0078] A dust detection device 15 is installed between the fine dust removal pipe 12 and the dust removal assembly 6 to detect the dust content in the gas exiting the dust removal assembly 6 in real time, providing control data for the controller. The controller is electrically connected to the bypass valve 11 and the fine dust removal valve 13. Based on the dust content data fed back by the dust detection device 15, the controller dynamically controls the opening degree of the bypass valve 11 and the fine dust removal valve 13 to achieve intelligent switching of the gas flow path.

[0079] In actual operation, when the dust detection device 15 detects that the dust content at the outlet of the dust removal component 6 is lower than the set threshold, the controller controls the bypass valve 11 to open, while the fine dust removal valve 13 closes or partially closes, allowing some or all of the gas to flow directly to the dust removal fan 16 through the bypass pipe 10, reducing unnecessary fine dust removal treatment and lowering system energy consumption; when the dust detection device 15 detects that the dust content is higher than the set threshold, the controller controls the bypass valve 11 to close, and the fine dust removal valve 13 to open to a certain degree, allowing the gas to enter the bag filter 14 through the fine dust removal pipe 12 for further fine dust removal treatment, ensuring that the emitted gas meets environmental protection requirements.

[0080] According to the blast furnace system 100 provided in this application embodiment, by setting up a parallel bypass pipe 10 and a fine dust removal pipe 12, and intelligently switching the gas flow path according to the dust content, an optimized balance between dust removal efficiency and energy consumption is achieved. When the dust content is low, the fine dust removal process is reduced, lowering system energy consumption and equipment wear; when the dust content is high, the gas is ensured to undergo fine dust removal treatment to guarantee that emissions meet standards. This not only improves the system's flexibility and adaptability but also further reduces the overall operating cost of the blast furnace system 100.

[0081] Please see Figure 1 According to some embodiments of this application, a humidity detection device 21 and a combustion air valve 22 arranged sequentially along the flow direction can be provided on the pipeline between the air outlet of the dust removal chimney 17 and the combustion air fan 20. An air pipeline 25 can be connected to the pipeline between the combustion air valve 22 and the combustion air fan 20. The air pipeline 25 is connected to the atmosphere. An air valve 26 can be provided on the air pipeline 25. The controller is electrically connected to the humidity monitoring device, the combustion air valve and the air valve 26.

[0082] In the pipeline between the outlet of the dust removal chimney 17 and the combustion air blower 20, a humidity detection device 21 is arranged forward along the gas flow direction. It can be a capacitive humidity sensor, a resistive humidity sensor, etc., and can detect the humidity of the gas discharged from the dust removal chimney 17 in real time, providing a data basis for system control. The combustion air valve 22 is installed after the humidity detection device 21. It can be an electric regulating valve or a pneumatic regulating valve. Its function is to control the gas flow rate entering the combustion air blower 20, thereby regulating the amount of combustion air entering the hot blast stove 18.

[0083] An air duct 25 is connected to the pipeline between the combustion air valve 22 and the combustion air fan 20. This air duct 25 is open to the atmosphere, and its diameter is designed according to the actual air supply requirements. The material can be metal or corrosion-resistant plastic pipe. The air valve 26 installed on the air duct 25 can also be an electric valve or a pneumatic valve, used to control the opening and closing of the air duct 25 and the amount of outside air entering.

[0084] The controller is electrically connected to the humidity monitoring device, the combustion valve, and the air valve 26. It can receive humidity data fed back by the humidity monitoring device and control the combustion valve and the air valve 26 according to preset conditions.

[0085] In actual operation, the high-temperature gas discharged from the dust removal chimney 17 passes through the humidity detection device 21 before flowing to the combustion fan 20. The humidity detection device 21 detects the gas humidity in real time and transmits the data to the controller. When the detected gas humidity is higher than the set threshold, it indicates that the moisture content in the gas is high, which may affect the combustion effect of the hot air furnace 18. At this time, the controller controls the combustion air valve 22 to reduce the opening or close it to reduce the flow of humid air. At the same time, it controls the air valve 26 to open to a certain degree to introduce dry air from the outside and mix it with the gas discharged from the dust removal chimney 17 to reduce the humidity of the mixed gas, or to use dry air from the outside completely. When the detected gas humidity is lower than the set threshold, the controller can appropriately increase the opening of the combustion air valve 22 and adjust the opening of the air valve 26 or close the air valve 26 according to actual needs to ensure that an appropriate amount of gas with suitable humidity enters the combustion fan 20 and finally enters the hot air furnace 18 as combustion air.

[0086] According to the blast furnace system 100 provided in this application embodiment, by setting a humidity detection device 21, a combustion air valve 22, an air pipeline 25, and an air valve 26, and through intelligent control by a controller, the humidity and flow rate of the combustion air entering the hot blast stove 18 can be flexibly adjusted according to the humidity of the gas discharged from the dust removal chimney 17. This ensures the quality of the combustion air entering the hot blast stove 18, improves the combustion efficiency and stability of the hot blast stove 18, further enhances the thermal energy utilization efficiency of the entire blast furnace system 100, and reduces the potential damage to the hot blast stove 18 equipment caused by excessively high gas humidity.

[0087] Please see Figure 1 According to some embodiments of this application, the blast furnace system 100 may further include: a flue gas chimney 27 and a first heat exchanger 28, wherein the flue gas outlet of the hot blast stove 18 is connected to the flue gas chimney 27 through a flue gas pipe; the first heat exchanger 28 has a first heat exchange pipe and a second heat exchange pipe that can exchange heat with each other, the first heat exchange pipe is connected in series with the flue gas pipe, and the second heat exchange pipe is connected in series with the combustion air pipe 1925.

[0088] The exhaust chimney 27 is used to discharge the flue gas after combustion in the hot blast stove 18. Its structure and dimensions are designed according to environmental emission requirements, and the material is usually a high-temperature resistant and corrosion-resistant metal. The exhaust duct connects the exhaust port of the hot blast stove 18 and the exhaust chimney 27, and uses welding or flange connections to ensure the sealing and stability of the connection. Its function is to transport the flue gas generated by the hot blast stove 18 to the exhaust chimney 27.

[0089] The first heat exchanger 28 is a key component for heat exchange. It has two independent flow channels: a first heat exchange pipe and a second heat exchange pipe, which can exchange heat efficiently between them. The first heat exchanger 28 can be a common type such as a plate heat exchanger or a shell-and-tube heat exchanger. The first heat exchange pipe is connected in series with the flue gas duct, allowing the high-temperature flue gas discharged from the hot blast furnace 18 to flow through it. The second heat exchange pipe is connected in series with the combustion air pipe 1925, through which the combustion air flows. With this arrangement, as the high-temperature flue gas flows in the first heat exchange pipe, it transfers the heat it carries to the combustion air in the second heat exchange pipe, achieving heat recovery and utilization.

[0090] In actual operation, the high-temperature flue gas generated by the combustion of the hot blast stove 18 enters the first heat exchanger 28 through the exhaust pipe, releasing heat as it flows within the pipe. Simultaneously, gas from the dust removal chimney 17 (or gas mixed with outside air) serves as combustion air, entering the second heat exchanger 28 along the combustion air pipe 1925. Inside the first heat exchanger 28, the high-temperature flue gas and combustion air exchange heat through the heat exchange walls. The combustion air absorbs heat, its temperature rises, and it then enters the hot blast stove 18 under the action of the combustion fan 20. The cooled flue gas, after heat exchange, continues to flow through the exhaust pipe to the exhaust chimney 27, and is finally discharged into the atmosphere. By adding the exhaust chimney 27, exhaust pipe, and first heat exchanger 28, the waste heat from the exhaust of the hot blast stove 18 is recovered and utilized. By utilizing the heat from the flue gas exhaust of the hot blast stove 18 to preheat the combustion air entering the hot blast stove 18, the temperature of the combustion air is increased, which helps to improve the combustion efficiency of the hot blast stove 18 and further improves the thermal energy utilization rate of the entire blast furnace system 100. At the same time, it reduces the exhaust gas temperature, reducing heat loss caused by the direct emission of high-temperature flue gas, which has positive significance in energy conservation and emission reduction, and reduces the energy consumption costs and environmental pressure of enterprises.

[0091] Please see Figure 1 According to some embodiments of this application, the blast furnace system 100 may further include a second heat exchanger 29, which may have a third heat exchange pipeline and a fourth heat exchange pipeline that can exchange heat with each other. The third heat exchange pipeline is connected in series with the flue gas pipeline. The combustion air pipeline 1925 includes a first combustion air pipe 23 and a second combustion air pipe 24 connected in parallel between the combustion air blower 20 and the hot blast stove 18. The fourth heat exchange pipeline is connected in series with the first combustion air pipe 23.

[0092] The second heat exchanger 29 also adopts a high-efficiency heat exchange structure. It can be the same as or a different type of heat exchanger than the first heat exchanger 28, such as a plate heat exchanger or a shell-and-tube heat exchanger, depending on the actual operating conditions and heat exchange requirements. The third heat exchange pipe of the second heat exchanger 29 is connected in series with the flue gas duct and can be located before the first heat exchange pipe of the first heat exchanger 28. In this way, the high-temperature flue gas discharged from the hot blast furnace 18 first passes through the third heat exchange pipe for preliminary cooling and then continues to flow through the first heat exchange pipe for secondary heat exchange.

[0093] The combustion air pipeline 1925 is divided into a first combustion air pipeline 23 and a second combustion air pipeline 24 connected in parallel between the combustion air blower 20 and the hot blast stove 18. A fourth heat exchange pipeline is connected in series with the first combustion air pipeline 23, allowing the combustion air passing through the first combustion air pipeline 23 to enter the fourth heat exchange pipeline and exchange heat with the flue gas in the third heat exchange pipeline, thereby being further heated. The second combustion air pipeline 24 serves as a bypass. Both the first and second combustion air pipelines 23 and 24 can be equipped with control valves. In the event of a failure in the second heat exchanger 29, the first combustion air pipeline 23 can be shut off, and the combustion air will flow directly to the hot blast stove 18 without passing through the second heat exchanger 29. This parallel arrangement increases the temperature of the combustion air entering the hot blast stove 18 and ensures the stability of the system.

[0094] Please see Figure 1 According to some embodiments of this application, the dust removal assembly 6 may include a gravity dust collector 7 and a cyclone dust collector 8 arranged in series. The inlet of the gravity dust collector 7 is connected to the dust removal pipeline, and the outlet of the cyclone dust collector 8 is connected to the exhaust pipeline 9.

[0095] The dust collection assembly 6 consists of a gravity dust collector 7 and a cyclone dust collector 8 connected in series. The gravity dust collector 7 is based on the principle of gravity settling and has a relatively large internal cavity structure, typically cylindrical or box-shaped, and mostly made of metal. When the dust-laden gas and vapor mixture enters the gravity dust collector 7 from the dust collection pipeline, the larger dust particles naturally settle to the bottom of the dust collector due to the reduced gas velocity, thus achieving preliminary dust removal. Its function is to remove most of the larger dust particles, reducing the processing load on subsequent dust collection equipment. The inlet of the gravity dust collector 7 is connected to the dust collection pipeline through welding, flange connections, or other methods to ensure a tight seal and prevent dust leakage.

[0096] The cyclone dust collector 8 utilizes centrifugal force for dust removal. Its main structure generally consists of a cylindrical body, a conical body, and components such as an inlet pipe and an outlet pipe. The dust-laden gas, after preliminary treatment by the gravity dust collector 7, enters the cyclone dust collector 8 tangentially through the inlet pipe. Inside the cylinder, it rotates at high speed, and dust particles are thrown against the cylinder wall by centrifugal force, sliding down the wall to the bottom ash hopper. The purified gas exits through the top outlet pipe, connecting to the exhaust pipe 9, ultimately transporting the gas, which has undergone secondary dust removal, to subsequent stages. The outlet of the cyclone dust collector 8 and the exhaust pipe 9 are connected using methods such as welding or flange connections.

[0097] In actual operation, the dust-laden gas generated during blast furnace 1 smelting is collected by dust hood 2 and then enters gravity dust collector 7 through dust collection pipeline. In gravity dust collector 7, larger dust particles settle and separate due to gravity. The gas, after preliminary dust removal, continues to flow into cyclone dust collector 8, where centrifugal force further separates and removes the remaining smaller dust particles. This two-stage dust removal process by gravity dust collector 7 and cyclone dust collector 8 effectively reduces the dust content in the gas, ensuring it meets emission standards or subsequent process requirements.

[0098] This application also provides a control method for a blast furnace system 100.

[0099] The blast furnace system 100 is the blast furnace system 100 of any of the above technical solutions, and therefore has the technical features and effects of the blast furnace system 100 of any of the above technical solutions, which will not be repeated here.

[0100] The control method, control device, electronic equipment, and readable storage medium of the blast furnace system 100 provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0101] The control method of the blast furnace system 100 can be applied to the terminal, and can be executed by the hardware or software in the terminal.

[0102] The terminal includes, but is not limited to, portable communication devices such as mobile phones or tablets with touch-sensitive surfaces (e.g., touchscreen displays and / or touchpads). It should also be understood that, in some embodiments, the terminal may not be a portable communication device, but rather a desktop computer with touch-sensitive surfaces (e.g., touchscreen displays and / or touchpads).

[0103] The following embodiments describe a terminal including a display and a touch-sensitive surface. However, it should be understood that the terminal may include one or more other physical user interface devices such as a physical keyboard, mouse, and joystick.

[0104] The control method for the blast furnace system 100 provided in this application embodiment can be executed by an electronic device or a functional module or functional entity in an electronic device that can implement the control method for the blast furnace system 100. The electronic devices mentioned in this application embodiment include, but are not limited to, industrial computers, mobile phones, tablet computers, computers, cameras and wearable devices. The control method for the blast furnace system 100 provided in this application embodiment will be described below using an electronic device as the execution subject as an example.

[0105] Please see Figure 2 The control method for the blast furnace system 100 provided in this application includes steps 210, 220 and 230.

[0106] Step 210: Control steam valve 5 to open to the preset opening degree;

[0107] Step 220: Obtain the dust content of exhaust pipe 9;

[0108] Step 230: When the dust content is not lower than the first dust threshold, control the opening of steam valve 5 to increase the set opening value.

[0109] In step 210, after the controller opens the control valve on the dust removal pipeline, it first opens the steam valve 5 to a preset opening degree. This preset opening degree is set based on the normal operating conditions of the blast furnace system 100. In actual production, the appropriate mixing ratio needs to be determined through experiments and adjustments based on factors such as the specific operating conditions of the blast furnace 1, the characteristics of the flue gas, and the performance of the gravity dust removal and cyclone dust removal equipment. This ensures that the water flushing slag steam and the dust removed in front of the furnace are mixed in a certain proportion in the initial stage, thereby initially improving the dust removal effect. For example, this preset opening degree can be 30%-50%, and there is no specific limitation.

[0110] In step 220, the dust detection device 15 on the exhaust pipe 9 is used to acquire the dust content data in the gas in real time and transmit the data to the controller.

[0111] In step 230, the controller compares the real-time dust content with a first dust threshold, which can be a dust content that meets environmental protection requirements, such as 5 mg / m³. 3 10mg / m 3 15mg / m 3 The specific opening degree is not limited. If the dust content is greater than or equal to the first dust threshold, it indicates that the current dust removal effect is insufficient. The controller will increase the opening degree of steam valve 5 by the set value to increase the amount of steam mixed in with the slag flushing. This utilizes the condensation effect of steam to improve the agglomeration of dust particles, thereby improving the dust removal efficiency. This set opening degree can be adjusted adaptively according to the amount of dust, and the specific opening degree is not limited. If the dust content is less than the first dust threshold, the current opening degree of steam valve 5 will be maintained or fine-tuned according to other parameters (such as humidity and temperature).

[0112] By adjusting the opening of steam valve 5, the control system dynamically adjusts the mixing ratio of water-flushing slag steam and dust collected in front of the furnace. When the dust content is high, the amount of steam mixed in is increased to ensure full contact between the steam and dust. The moisture in the steam can adsorb and condense dust particles, increasing the dust particle size, thereby improving the dust removal efficiency of the gravity dust collector 7 and cyclone dust collector 8 in the dust removal assembly 6 and reducing the final dust content.

[0113] According to the control method provided in this application embodiment, the opening degree of steam valve 5 is dynamically adjusted based on the real-time dust content, enabling the system to adapt to dust treatment needs under different operating conditions and improve the stability of dust removal efficiency. This avoids excessive steam introduction, reducing energy waste while ensuring dust removal efficiency. Through intelligent adjustment, this control method significantly improves the dust removal efficiency and environmental performance of the blast furnace system 100 without increasing additional energy consumption.

[0114] According to some embodiments of this application, the exhaust pipe 9 includes a bypass pipe 10 and a fine dust removal pipe 12 connected in parallel between the dust removal fan 16 and the dust removal assembly 6. The bypass pipe 10 is provided with a bypass valve 11, and the fine dust removal pipe 12 is provided with a bag filter 14 and a fine dust removal valve 13. A dust detection device 15 is provided between the fine dust removal pipe 12 and the dust assembly, and the controller is electrically connected to the bypass valve 11 and the fine dust removal valve 13.

[0115] The control method also includes steps 240 and 250.

[0116] Step 240: When the dust content is not lower than the second dust threshold, control the fine dust removal valve 13 to open and control the bypass valve 11 to close, wherein the first dust threshold is lower than the second dust threshold.

[0117] Step 250: When the dust content is lower than the first dust threshold, control the bypass valve 11 to open and control the fine dust removal valve 13 to close.

[0118] A first dust threshold and a second dust threshold are set, where the first dust threshold is less than the second dust threshold. For example, the first dust threshold could be 10 mg / m³. 3 The second dust threshold can be 100 mg / m³. 3 .

[0119] The control method of this application achieves graded response to dust concentration. Under high dust concentration conditions (dust content ≥ second dust threshold), the controller fully opens the fine dust removal valve 13 while simultaneously closing the bypass valve 11. At this time, all gas enters the bag filter 14 through the fine dust removal pipe 12 for high-precision filtration, ensuring emissions meet standards. Under low dust concentration conditions (dust content < first dust threshold), the controller fully opens the bypass valve 11 while simultaneously closing the fine dust removal valve 13. The gas flows directly to the dust removal fan 16 through the bypass pipe 10, bypassing the bag filter 14, reducing system resistance and energy consumption.

[0120] In some embodiments, under medium dust concentration conditions, where the first dust threshold ≤ dust content < the second dust threshold, only the opening of the steam valve 5 can be adjusted, while the bypass valve 11 and the fine dust removal valve 13 remain in their current states, for example, the bypass valve 11 is partially open and the fine dust removal valve 13 is partially open.

[0121] It should be noted that even when the steam valve 5 is opened to its maximum extent in this embodiment, the dust content still does not drop below the first dust threshold. Therefore, the fine dust removal valve 13 also needs to be opened to ensure that the discharged gas meets environmental protection requirements.

[0122] According to some embodiments of this application, step 230, when the dust content is not lower than the first dust threshold, controls the opening of the steam valve 5 to increase the set opening value, includes steps 231, 232 and 233.

[0123] Step 231: When the dust content is lower than the third dust threshold and not lower than the first dust threshold, control the opening of steam valve 5 to increase by the first proportion;

[0124] Step 232: When the dust content is lower than the fourth dust threshold and not lower than the third dust threshold, control the opening of steam valve 5 to increase by the second proportion;

[0125] Step 233: When the dust content is lower than the second dust threshold and not lower than the fourth dust threshold, control the opening of steam valve 5 to increase by the third proportion;

[0126] Among them, the first dust threshold, the third dust threshold, the fourth dust threshold and the second dust threshold increase step by step, and the first proportion, the second proportion and the third proportion increase step by step.

[0127] In the control method of this application, four dust thresholds are set, namely a first dust threshold, a third dust threshold, a fourth dust threshold, and a second dust threshold, and the first dust threshold < the third dust threshold < the fourth dust threshold < the second dust threshold is satisfied. For example, the first dust threshold can be 10 mg / m³. 3 The third dust threshold can be 20 mg / m³. 3 The fourth dust threshold can be 50 mg / m³. 3 The second dust threshold can be 100 mg / m³ 3 At the same time, three opening adjustment ratios are set: the first ratio, the second ratio, and the third ratio, with the first ratio < the second ratio < the third ratio. The first ratio can be 5%, the second ratio can be 10%, and the third ratio can be 20%.

[0128] In the first stage of regulation, when the dust concentration is between the first dust threshold (inclusive) and the third dust threshold (exclusive), the controller increases the opening of steam valve 5 by a first proportion. At this time, the dust concentration is relatively low, and a slight increase in the amount of steam mixed in can initially improve the dust removal effect and avoid excessive steam introduction and waste.

[0129] In the second stage of adjustment, if the dust content is between the third dust threshold (inclusive) and the fourth dust threshold (exclusive), the controller increases the opening of steam valve 5 by a second proportional adjustment. As the dust concentration increases, the amount of steam mixed in is appropriately increased, utilizing the agglomeration effect of steam on the dust to further improve dust removal efficiency.

[0130] The third level of adjustment involves increasing the opening of steam valve 5 by a third proportion when the dust content falls between the fourth dust threshold (inclusive) and the second dust threshold (exclusive). This significantly increases the steam volume when the dust concentration is high, enhancing the mixing effect between dust and steam and ensuring that the dust content in the gas after passing through dust removal component 6 meets the standards.

[0131] When the dust content reaches or exceeds the second dust threshold, in conjunction with the aforementioned control method, in addition to adjusting the opening of the steam valve 5, the fine dust removal valve 13 is also controlled to open and the bypass valve 11 is closed, and the bag filter 14 is activated for deep dust removal.

[0132] The controller compares the real-time dust content data fed back by the dust detection device 15 with the preset multi-level dust thresholds and adjusts the opening of the steam valve 5 according to the corresponding adjustment ratio. By gradually increasing the steam mixing volume, the mixing ratio of water flushing slag steam and dust collected in front of the furnace can be precisely matched according to the actual dust concentration. The increase in steam can promote the agglomeration of dust particles, making them easier to separate in the gravity dust collector 7 and cyclone dust collector 8. At the same time, combined with the switching of the fine dust removal pipe 12 and the bypass pipe 10, efficient processing of different dust concentration conditions can be achieved.

[0133] According to the control method provided in this application, the steam mixing amount is precisely controlled based on the dust concentration. This ensures effective dust removal while minimizing steam consumption and energy waste, further reducing system energy consumption. The graded adjustment mechanism enables the dust removal system to operate at optimal levels under varying dust concentrations, improving overall dust removal efficiency and ensuring stable compliance of emissions standards. The refined control strategy reduces the impact on the system caused by excessive adjustments, improving the stability and reliability of the blast furnace system and reducing equipment operating risks.

[0134] In some embodiments, the dust removal process of the blast furnace system 100 is as follows:

[0135] First, the dust generated in front of blast furnace 1 is mixed with water-flushing slag steam. The water-flushing slag steam absorbs the dust, and the temperature can be controlled at 150-200℃, which is beneficial for the recovery of valuable metals in the dust. Then, the mixed water-flushing slag steam and dust are transported to gravity dust collector 7, where gravity causes the dust to settle and separate, completing the initial dust removal.

[0136] Next, the dust from the outlet of gravity dust collector 7 is transported to cyclone dust collector 8, where a rotating airflow is formed. Centrifugal force is used to separate the dust from the airflow. The internal temperature of cyclone dust collector 8 can be controlled at 120-150℃. At the same time, water-cooled walls are used to cool the inside of cyclone dust collector 8, reducing the airflow temperature and completing further dust removal.

[0137] The bag filter dust collector 14 outlet is equipped with a dust concentration detection device. When the detected dust concentration exceeds 10mg / m³, a dust concentration detection device will be activated. 3 At that time, the bag filter 14 was put into use to perform deep dust removal on the airflow at the outlet of the cyclone dust collector 8.

[0138] Finally, the high-temperature flue gas from the outlet of the cyclone dust collector 8 is transported to the inlet of the combustion air fan of the hot air furnace 18 through the connecting pipe. The high-temperature flue gas is used to raise the inlet temperature of the combustion air fan 20 to 150-220℃, thereby reducing the energy consumption of the combustion air fan 20 and achieving energy saving and consumption reduction.

[0139] According to some embodiments of this application, the blast furnace system 100 further includes a hot blast stove 18, which is connected to the blast furnace 1 via a hot blast pipe 30. The combustion air inlet of the hot blast stove 18 is connected to the outlet of the dust removal chimney 17 via a combustion air pipe 1925. A combustion air blower 20 is provided on the combustion air pipe 1925. A humidity detection device 21 and a combustion air valve 22 are arranged sequentially along the flow direction on the pipe between the outlet of the dust removal chimney 17 and the combustion air blower 20. An air pipe 25 is connected to the pipe between the combustion air valve 22 and the combustion air blower 20. The air pipe 25 is connected to the atmosphere. An air valve 26 is provided on the air pipe 25. The controller is electrically connected to the humidity monitoring device, the combustion air valve, and the air valve 26.

[0140] The control method may also include steps 260, 270 and 280.

[0141] Step 260: Obtain the humidity value at the outlet of the dust removal chimney 17;

[0142] Step 270: When the humidity value is not greater than the humidity threshold, control the combustion air valve 22 to open and control the air duct 25 to close.

[0143] Step 280: When the humidity value is greater than the humidity threshold, control the air valve 26 to open and control the combustion air valve 22 to close.

[0144] In step 260, the controller obtains the humidity value of the gas outlet of the dust removal chimney 17 in real time through the humidity detection device 21. This humidity value reflects the moisture content of the gas after dust removal treatment.

[0145] In steps 270 and 280, the path is switched by comparing the humidity value with the humidity threshold. The humidity threshold can be 35%, 40%, 45%, or other values ​​between 35% and 45%, and there is no specific limitation.

[0146] Under low humidity conditions (humidity value ≤ humidity threshold), the controller determines that the humidity of the gas discharged from the dust removal chimney 17 is suitable for use as combustion air, and controls the combustion air valve 22 to open fully while simultaneously closing the air valve 26. At this time, all high-temperature gas enters the hot air furnace 18 directly through the combustion air pipeline 1925, maximizing the utilization of waste heat and improving thermal energy utilization.

[0147] Under high humidity conditions, when the humidity value exceeds the humidity threshold, the controller determines that the current gas humidity is too high, which may affect the combustion efficiency of the hot blast stove 18 or cause equipment corrosion. It then controls the air valve 26 to fully open and simultaneously closes the combustion air valve 22. At this time, the combustion air fan 20 directly draws in dry air from the atmosphere, ensuring that the humidity of the combustion air entering the hot blast stove 18 meets the requirements.

[0148] The system dynamically switches the source path of combustion air by providing real-time feedback data through the humidity detection device 21: when the humidity is low, the high-temperature gas discharged from the dust removal chimney 17 is used as combustion air first to realize waste heat recovery, reduce the energy consumption of the preheating air in the hot blast stove 18, and improve the thermal energy utilization rate; when the humidity is high, the path of high-temperature humid gas is cut off and dry air from the outside is introduced to prevent high-humidity gas from entering the hot blast stove 18, prevent problems such as incomplete combustion and equipment corrosion caused by excessive moisture, and extend the service life of the hot blast stove 18.

[0149] The control method for the blast furnace system 100 provided in this application embodiment can be executed by the control device of the blast furnace system 100. This application embodiment uses the control device of the blast furnace system 100 executing the control method as an example to illustrate the control device of the blast furnace system 100 provided in this application embodiment.

[0150] This application also provides a control device for a blast furnace system 100.

[0151] like Figure 3 As shown, the control device of the blast furnace system 100 includes: a first control module 310, a first acquisition module 320, and a second control module 330.

[0152] The first control module 310 is used to control the steam valve 5 to open to a preset degree.

[0153] The first acquisition module 320 is used to acquire the dust content of the exhaust pipe 9;

[0154] The second control module 330 is used to control the opening of the steam valve 5 to increase the set opening value when the dust content is not lower than the first dust threshold.

[0155] According to the control device provided in this application embodiment, the opening degree of steam valve 5 is dynamically adjusted based on the real-time dust content, enabling the system to adapt to dust treatment needs under different operating conditions and improve the stability of dust removal effect. This avoids excessive steam introduction, reducing energy waste while ensuring dust removal effect. Through intelligent adjustment, this control method significantly improves the dust removal efficiency and environmental performance of the blast furnace system 100 without increasing additional energy consumption.

[0156] In some embodiments, the control device may further include a third control module and a fourth control module.

[0157] The third control module is used to control the fine dust removal valve 13 to open and the bypass valve 11 to close when the dust content is not lower than the second dust threshold, wherein the first dust threshold is lower than the second dust threshold.

[0158] The fourth control module is used to control the bypass valve 11 to open and the fine dust removal valve 13 to close when the dust content is lower than the first dust threshold.

[0159] In some embodiments, the control device may further include a fifth control module, a sixth control module, and a seventh control module.

[0160] The fifth control module is used to increase the opening of steam valve 5 by a first proportion when the dust content is lower than the third dust threshold and not lower than the first dust threshold.

[0161] The sixth control module is used to increase the opening of steam valve 5 by a second ratio when the dust content is lower than the fourth dust threshold and not lower than the third dust threshold.

[0162] The seventh control module is used to increase the opening degree of steam valve 5 by a third proportion when the dust content is lower than the second dust threshold and not lower than the fourth dust threshold.

[0163] In some embodiments, the control device may further include: a second acquisition module, an eighth control module, and a ninth control module.

[0164] The second acquisition module is used to acquire the humidity value at the outlet of the dust removal chimney 17;

[0165] The eighth control module is used to control the combustion air valve 22 to open and the air duct 25 to close when the humidity value is not greater than the humidity threshold.

[0166] The ninth control module is used to control the air valve 26 to open and the combustion air valve 22 to close when the humidity value is greater than the humidity threshold.

[0167] The control device for the blast furnace system 100 in this embodiment can be an electronic device 400, or a component within the electronic device 400, such as an integrated circuit or a chip. The electronic device 400 can be a terminal, or other devices besides a terminal. For example, the electronic device 400 can be an industrial computer, mobile phone, tablet computer, laptop computer, handheld computer, vehicle-mounted electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This embodiment does not specifically limit the device.

[0168] The control device of the blast furnace system 100 in this embodiment can be a device with an operating system. This operating system can be Linux, VxWorks, QNX, Microsoft (Windows), Android, iOS, or other possible operating systems; this embodiment does not specifically limit the specific operating system used.

[0169] The control device for the blast furnace system 100 provided in this application embodiment can achieve... Figure 2 The various processes implemented in the method implementation examples will not be described again here to avoid repetition.

[0170] In some embodiments, such as Figure 4 As shown, this application embodiment also provides an electronic device 400, including a processor 401, a memory 402, and a computer program stored in the memory 402 and executable on the processor 401. When the program is executed by the processor 401, it implements the various processes of the control method embodiment of the above-described silo feeding system and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0171] It should be noted that the electronic device 400 in the embodiments of this application includes the mobile electronic device 400 and the non-mobile electronic device 400 described above.

[0172] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the control method of the blast furnace system 100 described above.

[0173] The processor is the processor 401 in the electronic device 400 of the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0174] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the control method embodiment of the blast furnace system 100 described above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0175] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0176] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0177] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0178] In the description of this application, "multiple" means two or more.

[0179] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0180] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0181] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0182] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A blast furnace system, characterized in that, include: blast furnace; A dust removal hood is installed outside the blast furnace, and a dust removal pipeline is connected to the dust removal hood. A water-flushing slag-removing hood is connected to the dust removal pipeline via a steam pipeline, and a steam valve is installed on the steam pipeline. A dust removal assembly, wherein the inlet of the dust removal assembly is connected to the dust removal hood through the dust removal pipeline, and the outlet of the dust removal assembly is connected to an exhaust pipeline, wherein a dust detection device and a dust removal fan are provided on the exhaust pipeline; A dust removal chimney, wherein the inlet of the dust removal chimney is connected to the exhaust pipe; A hot blast stove is connected to the blast furnace via a hot blast pipeline, and the combustion air inlet of the hot blast stove is connected to the air outlet of the dust removal chimney via a combustion air pipeline. A combustion air blower is installed on the combustion air pipeline; A controller is electrically connected to the dust detection device and the steam valve, and the controller is configured to control the opening degree of the steam valve according to the dust content.

2. The blast furnace system according to claim 1, characterized in that, The exhaust pipeline includes a bypass pipe and a fine dust removal pipe connected in parallel between the dust removal fan and the dust removal assembly. The bypass pipe is equipped with a bypass valve, and the fine dust removal pipe is equipped with a bag filter and a fine dust removal valve. The fine dust removal valve is located on the side of the bag filter closer to the dust removal assembly. The dust detection device is located between the fine dust removal pipeline and the dust assembly. The controller is electrically connected to the bypass valve and the fine dust removal valve.

3. The blast furnace system according to claim 1, characterized in that, A humidity detection device and a combustion-supporting air valve are arranged sequentially along the flow direction on the pipeline between the air outlet of the dust removal chimney and the combustion-supporting fan. An air pipeline is connected to the pipeline between the combustion-supporting air valve and the combustion-supporting fan. The air pipeline is connected to the atmosphere. An air valve is installed on the air pipeline. The controller is electrically connected to the humidity monitoring device, the combustion-supporting valve, and the air valve.

4. The blast furnace system according to claim 1, characterized in that, Also includes: The exhaust chimney is connected to the exhaust port of the hot air furnace through an exhaust pipe. The first heat exchanger has a first heat exchange pipe and a second heat exchange pipe that can exchange heat with each other. The first heat exchange pipe is connected in series with the flue gas pipe, and the second heat exchange pipe is connected in series with the combustion air pipe.

5. The blast furnace system according to claim 4, characterized in that, Also includes: The second heat exchanger has a third heat exchange pipeline and a fourth heat exchange pipeline that can exchange heat with each other. The third heat exchange pipeline is connected in series with the flue gas duct. The combustion air pipeline includes a first combustion air pipe and a second combustion air pipe connected in parallel between the combustion air blower and the hot air furnace. The fourth heat exchange pipeline is connected in series with the first combustion air pipe.

6. The blast furnace system according to any one of claims 1-5, characterized in that, The dust removal assembly includes a gravity dust collector and a cyclone dust collector connected in series. The inlet of the gravity dust collector is connected to the dust removal pipeline, and the outlet of the cyclone dust collector is connected to the exhaust pipeline.

7. A control method for a blast furnace system according to any one of claims 1-6, characterized in that, include: Control the steam valve to open to a preset opening degree; Obtain the dust content of the exhaust pipe; When the dust content is not lower than the first dust threshold, the opening degree of the steam valve is increased by a set value.

8. The control method for a blast furnace system according to claim 7, characterized in that, The exhaust pipeline includes a bypass pipe and a fine dust removal pipe connected in parallel between the dust removal fan and the dust removal assembly. A bypass valve is provided on the bypass pipe, and a bag filter and a fine dust removal valve are provided on the fine dust removal pipe. The dust detection device is located between the fine dust removal pipeline and the dust assembly. The controller is electrically connected to the bypass valve and the fine dust removal valve. The control method further includes: When the dust content is not lower than the second dust threshold, the fine dust removal valve is opened and the bypass valve is closed, wherein the first dust threshold is lower than the second dust threshold; When the dust content is lower than the first dust threshold, the bypass valve is opened and the fine dust removal valve is closed.

9. The control method for a blast furnace system according to claim 8, characterized in that, When the dust content is not lower than a first dust threshold, controlling the opening degree of the steam valve to increase by a set opening value includes: When the dust content is lower than the third dust threshold and not lower than the first dust threshold, the opening degree of the steam valve is increased by a first proportion. When the dust content is lower than the fourth dust threshold and not lower than the third dust threshold, the opening degree of the steam valve is increased by a second proportion. When the dust content is lower than the second dust threshold and not lower than the fourth dust threshold, the opening degree of the steam valve is increased by a third proportion. The first dust threshold, the third dust threshold, the fourth dust threshold, and the second dust threshold increase progressively, as do the first ratio, the second ratio, and the third ratio.

10. The control method for a blast furnace system according to claim 7, characterized in that, The blast furnace system also includes a hot blast stove, which is connected to the blast furnace via a hot blast pipeline. The combustion air inlet of the hot blast stove is connected to the outlet of the dust removal chimney via a combustion air pipeline. A combustion air fan is installed on the combustion air pipeline. A humidity detection device and a combustion air valve are arranged sequentially along the flow direction on the pipeline between the outlet of the dust removal chimney and the combustion air fan. An air pipeline is connected between the combustion air valve and the combustion air fan. The air pipeline is open to the atmosphere and is equipped with an air valve. The controller is electrically connected to the humidity monitoring device, the combustion air valve, and the air valve. The control method further includes: Obtain the humidity value at the outlet of the dust removal chimney; If the humidity value is not greater than the humidity threshold, control the combustion-supporting air valve to open and control the air pipeline to close. If the humidity value is greater than the humidity threshold, the air valve is opened and the combustion air valve is closed.

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