A plasma bag island system and a plasma bag system

Abstract

The application discloses a plasma baking island system and a plasma baking system. The plasma baking island system comprises a plasma baking device, a plurality of baking devices, a conveying device and a closed loop pipeline. The plasma baking device is arranged at a baking position. The plasma baking device generates high-temperature plasma gas by using inert gas as medium, and heats the baking device at the baking position by the high-temperature plasma gas. The conveying device is distributed according to a preset path. The conveying device carries and transports the baking device. The baking position is in the preset path. Each baking device is arranged on each conveying device. The plurality of baking devices are connected in series by the closed loop pipeline to form a baking island. The baking device is used for receiving molten steel. The first end of the closed loop pipeline is connected to the plasma baking device and the first baking device in series, and is used for transmitting the high-temperature plasma gas provided by the plasma baking device. The closed loop pipeline connected to each baking device provides the corresponding baking device with the high-temperature plasma gas in stages.

Description

Technical Field

[0001] This application relates to the field of seat belt retractor technology, specifically to a plasma baking island system and another plasma baking machine system. Background Technology

[0002] A ladle baking device is a device used to bake steel ladles, typically after they are newly built and before they are filled with molten steel. It is also called a ladle baker. Ladle baking is a key step in the steelmaking process, and the performance of the ladle baking device significantly impacts converter tapping temperature, steelmaking operating rate, and furnace life. Ladle baking occurs between steelmaking and casting, and its temperature plays a crucial role in coordinating the entire production process. It is essential for reducing tapping temperature, extending converter life, increasing steel output, reducing raw material consumption, lowering the cost per ton of steel, and ensuring the smooth operation of continuous casting.

[0003] Currently, blast furnace gas is generally used as the heating source in ladle baking machines, and most employ regenerative baking devices. The working principle of these devices is to recover as much sensible heat as possible from the exhaust gas of the combustion heating unit, a technique to reduce heat loss from flue gas during ladle baking. Lower exhaust gas temperatures can significantly improve the thermal efficiency of the combustion heating unit, while drastically reducing energy consumption. However, existing baking machines still consume a considerable amount of blast furnace gas and emit large quantities of carbon dioxide.

[0004] Therefore, how to reduce fuel consumption when using ladle ovens to lower production costs and reduce carbon emissions has become a pressing issue for those skilled in the art. Utility Model Content

[0005] This application provides a plasma ladle baking island system to address the technical problem in the prior art of reducing fuel consumption, thereby lowering production costs and reducing carbon emissions when using ladle baking ovens. This application also provides a plasma ladle baking oven system.

[0006] This application provides a plasma baking island system, including: a plasma baking oven, multiple baking devices, multiple transport devices, and a closed-loop pipeline; wherein, The plasma baking oven is installed at the baking station. The plasma baking oven uses inert gas as a medium to generate high-temperature plasma gas, and heats the baking device located at the baking station through the high-temperature plasma gas. The transport device is distributed according to a preset path, and the transport device carries and transports the baking device; the baking station is located in the preset path; Each of the aforementioned ladle baking devices is correspondingly installed on each of the aforementioned transport devices, and multiple ladle baking devices are connected in series through the closed-loop pipeline to form a ladle baking island; the ladle baking devices are used to receive molten steel; The first end of the closed-loop pipeline is connected to the plasma baking oven and the first baking device connected in series, and is used to transmit the high-temperature plasma gas provided by the plasma baking oven. The closed-loop pipeline connected in series with each baking device provides the high-temperature plasma gas to the corresponding baking device in stages.

[0007] Optionally, the high-temperature plasma gas is supplied in stages with progressively decreasing heat, and the progressively decreasing high-temperature plasma gas heats the baking apparatus connected in series in stages.

[0008] Optionally, after the baking device at the end of the closed-loop pipeline is connected in series, the end of the closed-loop pipeline is connected to the plasma baking oven, so that the high-temperature plasma gas in the baking device at the end can be recycled and supplied to the plasma baking oven through the closed-loop pipeline.

[0009] Optionally, it also includes: an inert gas supply device, which is connected to the plasma baking oven and is used to supply inert gas to the plasma baking oven.

[0010] Optionally, the inert gas includes at least one of nitrogen, neon, or argon.

[0011] Optionally, the inner wall of the ladle baking device is provided with a refractory material, the composition of which includes at least magnesium nitride or aluminum nitride; the refractory temperature of the refractory material is close to the temperature of the molten steel contained in the ladle baking device.

[0012] Optionally, the baking device is equipped with a temperature monitoring mechanism, which is used to monitor the temperature of the baking device.

[0013] Optionally, the transport device includes an AGV (Automated Guided Vehicle).

[0014] Optionally, the closed-loop pipeline is made of a high-temperature resistant material.

[0015] This application also provides a plasma baking oven system, including: a plasma baking oven, a baking device, a transport device, and a closed-loop pipeline; wherein... The plasma baking oven is installed at the baking station. The plasma baking oven uses inert gas as a medium to generate high-temperature plasma gas, and heats the baking device located at the baking station through the high-temperature plasma gas. The transport device is distributed according to a preset path, and the transport device carries and transports the baking device; the baking station is located in the preset path; The ladle baking device is correspondingly installed on the transport device, and the ladle baking device is used to receive molten steel. The closed-loop pipeline connects the plasma baking oven and the baking device, and is used to transmit the high-temperature plasma gas provided by the plasma baking oven to the baking device, and to transmit the high-temperature plasma gas provided by the baking device to the plasma baking oven.

[0016] Compared with the prior art, this application has the following advantages: This application provides a plasma baking island system, including: a plasma baking unit, multiple baking devices, multiple transport devices, and a closed-loop pipeline. The plasma baking unit is located at the baking station and uses inert gas as a medium to generate high-temperature plasma gas, which heats the baking devices at the baking station. The transport devices are distributed along a preset path, carrying and transporting the baking devices. The baking station is located within this preset path. Each baking device is correspondingly mounted on a transport device, and multiple baking devices are connected in series via the closed-loop pipeline to form a baking island. The baking devices are used to receive molten steel. The first end of the closed-loop pipeline connects the plasma baking unit and the first baking device connected in series, used to transmit the high-temperature plasma gas provided by the plasma baking unit. The closed-loop pipeline connected in series with each baking device provides high-temperature plasma gas to the corresponding baking device in stages.

[0017] The plasma ladle baking device of this application embodiment can output a higher heating temperature than blast furnace gas combustion heating, up to 2000℃, which can heat the inside of the ladle baking device to a higher temperature, reduce the tapping temperature of molten steel, and reduce energy consumption in the steelmaking process. Moreover, it has high baking efficiency, adjustable and efficient heating rate, rapid overall temperature rise, and high uniformity, significantly reducing the time required for the original tens of hours of ladle baking process. In addition, the electrodes of the plasma ladle baking device can be extended to ensure continuous operation for more than 20,000 hours. Furthermore, it produces no NOx and no CO emissions, reducing the safety level of the ladle baking station and eliminating hazardous sources. Simultaneously, the absence of O2 reduces the scouring and oxidation of the ladle by flue gas. Furthermore, the use of circulating inert gas plasma hot air heating allows for the complete recovery and reuse of inert gas, reducing energy consumption, production costs, and carbon emissions simultaneously. In addition, multiple ladle baking devices can be connected in series through a closed-loop pipeline to form a ladle baking island, allowing different baking devices to handle molten steel at different temperatures, thereby improving the heating efficiency of the molten steel. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the framework of a plasma baking island system provided in the first embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the framework of a plasma baking oven system provided in the second embodiment of this application.

[0020] Figure label: 1. Plasma baking oven, 2. Baking device, 20. End cap, 21. Baking island, 3. Conveying device, 4. Closed-loop pipeline, 5. Inert gas supply device, 6. Circulating fan, 7. Power supply equipment. Detailed Implementation

[0021] To enable those skilled in the art to better understand the purpose, technical solutions, and advantages of the embodiments of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, and not all embodiments.

[0022] It should be further clarified that the terminology used in the specification, claims, and accompanying drawings of this application, such as referring to an element as being "on" or "connected" to another element, means that the element may be directly on or connected to another element, or that there may be intermediate elements. In contrast, when an element is referred to as being "directly" on or "directly connected" to another element, there will be no intermediate elements.

[0023] In the embodiments of this application, the terms "first," "second," "third," etc., are used to distinguish similar objects and are not used to describe a specific order or sequence. Such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in an order other than that shown in the figures or descriptions herein. Furthermore, terms such as "comprising," "including," and "containing" indicate the presence of the claimed feature but do not exclude one or more other features. Spatial relationship terms such as "above," "below," "left," "right," "front," and "back" indicate the spatial positional relationship between one feature and another in the figures. It should be understood that spatial relationship terms include not only the orientation shown in the figures but also different orientations of the device during use or operation. For example, when the device in the figures is reversed, a feature previously described as "below" its feature can now be described as "above" its feature.

[0024] This application provides a plasma ladle baking island system to address the technical problem in the prior art of reducing fuel consumption, thereby lowering production costs and reducing carbon emissions when using ladle baking ovens. This application also provides another plasma baking oven system.

[0025] Figure 1This is a schematic diagram of the framework of a plasma baking island system provided in the first embodiment of this application. Figure 2 This is a schematic diagram of the framework of a plasma baking oven system provided in the second embodiment of this application.

[0026] First Embodiment like Figure 1 As shown in the figure, this application provides a plasma baking island system, including: a plasma baking machine 1, multiple baking devices 2, multiple transport devices 3, and a closed-loop pipeline 4; wherein, the plasma baking machine 1 is set at the baking station, and the plasma baking machine 1 uses inert gas as a medium to generate high-temperature plasma gas, and heats the baking devices 2 located at the baking station through the high-temperature plasma gas. The transport devices 3 are distributed according to a preset path, and the transport devices 3 carry and transport the baking devices 2, and the baking station is in the preset path. Each baking device 2 is correspondingly set on each transport device 3, and multiple baking devices 2 are connected in series through the closed-loop pipeline 4 to form a baking island 21. The baking devices 2 are used to receive molten steel. The first end of the closed-loop pipeline 4 is connected to the plasma baking machine 1 and the first baking device 2 connected in series, and is used to transmit the high-temperature plasma gas provided by the plasma baking machine 1. The closed-loop pipeline 4 connected in series with each baking device 2 provides high-temperature plasma gas to the corresponding baking device 2 in stages. The structure and operating principle of each of the above devices will be further explained below.

[0027] Specifically, in this embodiment, a plasma baking oven 1 is installed at the baking station. The plasma baking oven 1 uses an inert gas as a medium to generate high-temperature plasma gas, which heats the baking device 2 located at the baking station. In one example, the plasma baking oven 1 includes a plasma generator and a hot air furnace. The plasma is used to heat the inert gas to form high-temperature plasma gas, and the furnace uses the high-temperature plasma gas as a heat source to heat the baking device 2 located at the baking station. The inert gas includes at least one of nitrogen, neon, or argon. In this embodiment, nitrogen is preferred as the inert gas. In one example, the plasma baking oven 1 is connected to a power supply device 7, and the plasma baking oven 1 obtains electricity through the power supply device 7. The plasma baking oven 1 achieves high electrothermal conversion efficiency, using both conductive and convective heat transfer, with a thermal efficiency of up to 95% and reduced energy consumption.

[0028] In one example, the plasma baking oven 1 uses the principle of electric arc to ionize and heat inert gas. The plasma generator has an electric arc, an inlet, an outlet, a water inlet, and a water outlet. The electric arc is connected to an external power supply, which is connected to an electric furnace transformer. A transformer cooling water pipeline is also provided, connecting the external power supply and a circulating water tank. The inlet is used to introduce inert gas, the outlet is used to release high-temperature plasma gas, the water inlet is connected to the circulating water tank via the electric furnace cooling water supply pipeline, and the outlet is connected to the circulating water tank via the electric furnace cooling water return pipeline, used to return water from the hot blast stove to the circulating water tank. A cooling tower is also provided on the electric furnace cooling water return pipeline.

[0029] In this embodiment, the air outlet of the plasma baking oven 1 is connected to each baking device 2 via a connecting pipe (closed-loop pipe) to deliver the high-temperature hot air from the plasma baking oven 1 to each baking device 2, heating each baking device 2 to the corresponding temperature. The last baking device 2 is connected to the plasma baking oven 1 via a connecting pipe (closed-loop pipe) to allow the remaining low-temperature hot air in the last baking device 2 to flow back to the plasma baking oven 1 for reheating. Specifically, the air outlet of the plasma baking oven 1 is connected to the first baking device 2 via a connecting pipe, the first baking device 2 is connected to the second baking device 2 via a connecting pipe, the second baking device 2 is connected to the third baking device 2 via a connecting pipe, and so on, until it is connected to the last baking device 2. The last baking device 2 is then connected to the plasma baking oven 1 via a connecting pipe to allow the remaining low-temperature hot air in the last baking device 2 to flow back to the plasma baking oven 1 for reheating.

[0030] In one example, the plasma baking oven 1 heats each baking device 2 to a temperature of 1500 to 1800 degrees Celsius. It should be noted that in practical applications, the temperature of the hot air gradually decreases as it passes through each baking device 2. The inner wall of the baking device 2 is lined with a refractory material, the composition of which includes at least magnesium nitride or aluminum nitride. The baking device 2 is equipped with a temperature monitoring mechanism to monitor the temperature of the corresponding baking device 2.

[0031] In another example, a temperature measuring device can be installed in the plasma baking oven 1. This device can measure the internal temperature of the plasma baking oven 1 and set parameters such as temperature, power, and time. This allows the high-temperature plasma gas in the plasma baking oven 1 to be accurately heated to the corresponding temperature.

[0032] Correspondingly, multiple ladle baking devices 2 have the same structure but different volumes. Each ladle baking device 2 has a connection port that can be connected to the gas outlet of the plasma ladle baking device 1. In one example, the ladle baking device 2 includes a housing body and an end cap 20 connected to the housing body. The volumes of the housing bodies can be the same or different, and housing bodies of different volumes can hold different volumes of molten steel. The housing body includes an inner cavity and a protective shell fitted outside the inner cavity. The inner cavity is used to receive the molten steel. The inner cavity is made of a high-temperature resistant material, and the inner wall of the inner cavity is made of a refractory material, the composition of which includes at least magnesium nitride or aluminum nitride. The high-temperature plasma gas and the refractory material on the inner wall of the ladle baking device 2 form metal nitrides, which is beneficial for higher temperature resistance and significantly extends the life of the ladle. The refractory temperature of the refractory material is close to the temperature of the molten steel contained in the ladle baking device 2 to prevent thermal expansion. That is, when the plasma baking oven 1 heats the baking device 2, the heating temperature is close to the refractory temperature of the refractory material.

[0033] The protective shell is also made of refractory material and contains heat insulation material. While insulating the inner cavity, it also prevents the surrounding environment and personnel from being affected by excessive temperature. That is, the temperature of the protective shell placed on the outside is generally the normal ambient temperature, with the preferred temperature between 20 and 40 degrees Celsius.

[0034] In this embodiment, the accommodating body can be detachably connected to the transport device 3. This detachable connection facilitates both connection and disassembly. For example, after the baking device 2 is transported to the casting steel station by the transport device 3, if the molten steel in the baking device 2 needs to be poured onto the casting steel workpiece, the baking device 2 needs to be moved to a designated height, requiring separation from the transport device 3. In one example, the detachable connection structure includes a hook and a groove. The hook can be located at the bottom periphery of the accommodating body, and the groove is correspondingly located on the transport device 3. The detachable connection between the accommodating body and the transport device 3 is achieved through the docking or separation of the hook and groove. Of course, the hooks and grooves have a one-to-one correspondence, and the number of hooks and grooves can be set according to actual needs; no specific limitation is made here.

[0035] In this embodiment, the end cap 20 is connected to the first and second pipelines and can be separated from the housing body so that the housing body can move without being affected by the transport device 3. The end cap 20 is provided with at least one air inlet and at least one air outlet, wherein the air inlet is used to introduce high-temperature plasma gas and the air outlet is used to output high-temperature plasma gas. In one example, in order to control the gas flow rate of the air inlet and the air outlet, an air inlet control valve and an air outlet control valve are also provided, with the air inlet control valve located at the air inlet and the air outlet control valve located at the air outlet. In addition, the air inlet control valve and the air outlet control valve can also close the air inlet and the air outlet in a timely manner when the end cap 20 is opened to prevent leakage of high-temperature plasma gas during the transmission process.

[0036] In one example, in order to accurately determine the gas temperature at the inlet and outlet, temperature monitoring mechanisms are installed at the inlet and outlet respectively. The temperature monitoring mechanisms are used to monitor the temperature of the high-temperature plasma gas at the inlet and the temperature of the high-temperature plasma gas at the outlet.

[0037] Each baking device 2 is detachably mounted on each transport device 3. Each transport device 3 is distributed according to a preset path. The transport device 3 carries and transports the baking device 2. The baking station is in the preset path, so that the transport device 3 can carry each baking device 2 through the preset path to the baking station, thereby heating each baking device 2 located at the baking station.

[0038] In this embodiment, the transport device 3 includes AGV (Automated Guided Vehicle) intelligent transport vehicles, and each AGV is sequentially numbered. Numbering the AGVs allows for accurate identification of which AGV transports which ladle-baking device 2; that is, each ladle-baking device 2 has a one-to-one correspondence with each AGV. Using AGVs allows for precise control over which AGV transports the corresponding ladle-baking device 2 for heating and pouring molten steel.

[0039] In this embodiment, each baking device 2 is correspondingly mounted on each transport device 3, and multiple baking devices 2 are connected in series via a closed-loop pipeline 4 to form a baking island 21. The first end of the closed-loop pipeline 4 connects to the plasma baking unit 1 and the first baking device 2 connected in series, and is used to transmit the high-temperature plasma gas provided by the plasma baking unit 1. The closed-loop pipeline 4 connected in series with each baking device 2 provides high-temperature plasma gas to the corresponding baking device 2 in stages. Furthermore, after the last baking device 2 connected in series in the closed-loop pipeline 4, the end of the pipeline connects to the plasma baking unit 1, so that the high-temperature plasma gas in the last baking device 2 is recycled and supplied to the plasma baking unit 1 again via the closed-loop pipeline 4.

[0040] For example, there are five baking devices 2, namely baking device 1, baking device 2, baking device 2, baking device 2, baking device 2, baking device 2, and baking device 2. The closed-loop pipeline 4 includes multiple connecting pipelines, one of which connects the plasma baking machine 1 and the first baking device 2 connected in series, and the remaining connecting pipelines connect to adjacent baking devices 2 respectively. The last baking device 2 is connected to the plasma baking machine 1 through connecting pipelines. For example, connecting pipes 1, 2, 3, 4, 5, and 6 are configured such that: connecting pipe 1 connects to the outlet of plasma baking oven 1 and the inlet of baking device 2, for inputting the high-temperature plasma gas from plasma baking oven 1 into baking device 2; connecting pipe 2 connects to the outlet of baking device 1 and the inlet of baking device 2, for inputting the high-temperature plasma gas from baking device 1 into baking device 2; and connecting pipe 3 connects to the outlet of baking device 2 and the inlet of baking device 3, for inputting the high-temperature plasma gas from baking device 2 into baking device 2. The high-temperature plasma gas from baking device 2 is input to baking device 3; connecting pipe 4 connects to the outlet of baking device 3 and the inlet of baking device 4, used to input the high-temperature plasma gas from baking device 3 to baking device 4; connecting pipe 5 connects to the outlet of baking device 4 and the inlet of baking device 5, used to input the high-temperature plasma gas from baking device 4 to baking device 5; connecting pipe 6 connects to the outlet of baking device 5 and the inlet of plasma baking device 1, used to input the high-temperature plasma gas from baking device 6 to plasma baking device 1. Multiple baking devices 2 are connected in series through closed-loop pipe 4 to form a baking island 21, which not only allows for the sequential supply of high-temperature plasma gas to the corresponding baking devices 2, but also enables the recycling of the high-temperature plasma gas. In this example, the temperature of the high-temperature plasma gas received by each baking device 2 is approximately the same, and the temperature range of the high-temperature plasma gas is 1500 degrees to 1800 degrees.

[0041] In one example, the heat of the high-temperature plasma gas supplied in a stepped manner decreases progressively, and the progressively decreasing high-temperature plasma gas heats the baking devices 2 connected in series in a stepped manner. That is, in the series-connected baking devices 2, the temperature of the high-temperature plasma gas input sequentially decreases. For example, if the temperature of the high-temperature plasma gas received by the first baking device 2 in the series is 1700 degrees Celsius, then the temperature of the high-temperature plasma gas received by the baking device 2 adjacent to the first baking device 2 is 1500 degrees Celsius. For example, there are five baking devices 2, namely baking device 1, baking device 2, baking device 3, baking device 4, and baking device 5. The closed-loop pipeline 4 includes multiple connecting pipelines, one of which connects the plasma baking unit 1 and the first baking device 2 in the series, and the remaining connecting pipelines connect to adjacent baking devices 2 respectively. The last baking device 2 is connected to the plasma baking unit 1 through connecting pipelines. For example, connecting pipes 1, 2, 3, 4, 5, and 6 are configured such that: connecting pipe 1 connects to the outlet of plasma baking oven 1 and the inlet of baking device 2, for inputting the high-temperature plasma gas (1700 degrees Celsius) from plasma baking oven 1 to baking device 2; connecting pipe 2 connects to the outlet of baking device 1 and the inlet of baking device 2, for inputting the high-temperature plasma gas (1500 degrees Celsius) from baking device 1 to baking device 2; and connecting pipe 3 connects to the outlet of baking device 2 and the inlet of baking device 3, for inputting the high-temperature plasma gas (1500 degrees Celsius) from baking device 2 to baking device 3. The high-temperature plasma gas in baking device 2 is 1200 degrees Celsius. Connecting pipe 4 connects to the outlet of baking device 3 and the inlet of baking device 4, and is used to input the high-temperature plasma gas from baking device 3 to baking device 4. The temperature of this high-temperature plasma gas is 1000 degrees Celsius. Connecting pipe 5 connects to the outlet of baking device 4 and the inlet of baking device 5, and is used to input the high-temperature plasma gas from baking device 4 to baking device 5. The temperature of this high-temperature plasma gas is 800 degrees Celsius. Connecting pipe 6 connects to the outlet of baking device 5 and the inlet of plasma baking device 1, and is used to input the high-temperature plasma gas from baking device 6 to plasma baking device 1. The temperature of this high-temperature plasma gas is 600 degrees Celsius.

[0042] In one example, considering that the closed-loop pipeline 4 has a long pipeline length connecting multiple baking devices 2, in order to make the high-temperature plasma gas in the closed-loop pipeline 4 flow rapidly, a circulating fan 6 is also provided. The circulating fan 6 is connected to the closed-loop pipeline 4 and is used to increase the pressure in the closed-loop pipeline 4 to accelerate the flow of the high-temperature plasma gas.

[0043] Of course, if the heat from the high-temperature plasma gas decreases in stages, causing the temperature of the corresponding baking device 2 to be insufficient to reach the required baking temperature, the transport device 3 can be controlled to transport the baking device 2 that does not meet the temperature requirement to the baking station according to a preset path. The plasma baking device 1 can then directly heat the baking device 2 located at the baking station until the baking temperature of the baking device 2 is reached.

[0044] In this embodiment, considering that the baking device 2 will open its end cap 20 when pouring molten steel, and release some high-temperature plasma gas, in order to replenish the gas volume in time, an inert gas supply device 5 is also included. The inert gas supply device 5 is connected to the plasma baking device 1 and is used to supply inert gas to the plasma baking device 1.

[0045] This application provides a plasma baking island system, including: a plasma baking unit 1, multiple baking devices 2, multiple transport devices 3, and a closed-loop pipeline 4. The plasma baking unit 1 is located at the baking station and uses inert gas as a medium to generate high-temperature plasma gas, which heats the baking devices 2 located at the baking station. The transport devices 3 are distributed along a preset path, carrying and transporting the baking devices 2. The baking station is located within the preset path. Each baking device 2 is correspondingly mounted on each transport device 3, and multiple baking devices 2 are connected in series via the closed-loop pipeline 4 to form a baking island 21. The baking devices 2 are used to receive molten steel. The first end of the closed-loop pipeline 4 connects the plasma baking unit 1 and the first baking device 2 connected in series, and is used to transmit the high-temperature plasma gas provided by the plasma baking unit 1. The closed-loop pipeline 4 connected in series with each baking device 2 provides high-temperature plasma gas to the corresponding baking device 2 in stages.

[0046] The plasma ladle baking unit 1 of this application embodiment can output a higher heating temperature than blast furnace gas combustion heating, up to 2000℃, which can heat the inside of the ladle baking device 2 to a higher temperature, reduce the tapping temperature of molten steel, and reduce energy consumption in the steelmaking process. Moreover, it has high baking efficiency, adjustable and efficient heating rate, rapid overall temperature rise, and high uniformity, significantly reducing the time required for the original ladle baking process, which previously required tens of hours. In addition, the electrodes of the plasma ladle baking unit 1 can be extended to ensure continuous operation for more than 20,000 hours. Furthermore, it eliminates NOx and CO emissions, lowering the safety level of the ladle baking station and eliminating hazardous sources. Simultaneously, the absence of O2 reduces the scouring and oxidation of the ladle by flue gas. Furthermore, the use of circulating inert gas plasma hot air heating allows for the complete recovery and reuse of inert gas, reducing energy consumption, production costs, and carbon emissions simultaneously. In addition, multiple ladle baking devices 2 are connected in series through a closed-loop pipeline 4 to form a ladle baking island 21, allowing different ladle baking devices 2 to handle molten steel at different temperatures, thereby improving the heating efficiency of the molten steel.

[0047] Second Embodiment like Figure 2 As shown in the illustration, this application provides a plasma baking system, including: a plasma baking unit 1, a baking device 2, a transport device 3, and a closed-loop pipeline 4. The plasma baking unit 1 is located at the baking station. It uses an inert gas as a medium to generate high-temperature plasma gas, which heats the baking device 2 located at the baking station. The transport device 3 is distributed along a preset path and carries and transports the baking device 2. The baking station is located within the preset path. The baking device 2 is correspondingly mounted on the transport device 3 and is used to receive molten steel. The closed-loop pipeline 4 connects the plasma baking unit 1 and the baking device 2, and is used to transmit the high-temperature plasma gas supplied by the plasma baking unit 1 to the baking device 2, and the high-temperature plasma gas supplied by the baking device 2 to the plasma baking unit 1.

[0048] Since the plasma baking oven 1, baking device 2, and conveying device 3 are the same as those in the first embodiment described above, they will not be repeated here. Additionally, the inert gas supply device 5 and circulating fan 6 included in the plasma baking oven system can be found in the description of the first embodiment described above.

[0049] In this embodiment, the closed-loop pipeline 4 connects the plasma baking oven 1 and the baking device 2, and is used to transmit the high-temperature plasma gas supplied by the plasma baking oven 1 to the baking device 2, and to transmit the high-temperature plasma gas supplied by the baking device 2 to the plasma baking oven 1. Specifically, the closed-loop pipeline 4 includes a first closed-loop pipeline 4 and a second closed-loop pipeline 4, wherein the first closed-loop pipeline 4 is connected to the outlet of the plasma baking oven 1 and the inlet of the baking device 2, and is used to transmit the high-temperature plasma gas supplied by the plasma baking oven 1 to the baking device 2. The second closed-loop pipeline 4 is connected to the outlet of the baking device 2 and the inlet of the plasma baking oven 1, and is used to transmit the high-temperature plasma gas supplied by the baking device 2 to the plasma baking oven 1.

[0050] The beneficial effects of the plasma baking oven system in this embodiment can be found in the beneficial effects of the plasma baking island system in the first embodiment described above. They will not be repeated here.

[0051] The above description is merely a preferred embodiment disclosed in this application, but the scope of protection of this application is not limited thereto. Any possible changes and modifications can be made by those skilled in the art without departing from the spirit and scope of this application, and all such changes and modifications are within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection defined in the claims of this application.

Claims

1. A plasma baking island system, characterized in that, include: The system includes a plasma baking oven, multiple baking devices, multiple conveying devices, and a closed-loop pipeline; among which, The plasma baking oven is installed at the baking station. The plasma baking oven uses inert gas as a medium to generate high-temperature plasma gas, and heats the baking device located at the baking station through the high-temperature plasma gas. The transport device is distributed according to a preset path, and the transport device carries and transports the baking device; the baking station is located in the preset path; Each of the aforementioned ladle baking devices is correspondingly installed on each of the aforementioned transport devices, and multiple ladle baking devices are connected in series through the closed-loop pipeline to form a ladle baking island; the ladle baking devices are used to receive molten steel; The first end of the closed-loop pipeline is connected to the plasma baking oven and the first baking device connected in series, and is used to transmit the high-temperature plasma gas provided by the plasma baking oven. The closed-loop pipeline connected in series with each baking device provides the high-temperature plasma gas to the corresponding baking device in stages.

2. The plasma baking island system according to claim 1, characterized in that, The high-temperature plasma gas is supplied in stages with decreasing heat, and the decreasing heat of the high-temperature plasma gas heats the baking devices connected in series in stages.

3. The plasma baking island system according to claim 1, characterized in that, After the baking device at the end of the closed-loop pipeline is connected in series, the end of the closed-loop pipeline is connected to the plasma baking oven, so that the high-temperature plasma gas in the baking device at the end can be recycled and supplied to the plasma baking oven through the closed-loop pipeline.

4. The plasma baking island system according to claim 1, characterized in that, Also includes: An inert gas supply device is connected to the plasma baking oven and is used to supply inert gas to the plasma baking oven.

5. The plasma baking island system according to claim 1, characterized in that, The inert gas includes at least one of nitrogen, neon, or argon.

6. The plasma baking island system according to claim 1, characterized in that, The inner wall of the ladle baking device is provided with refractory material, the composition of which includes at least magnesium nitride or aluminum nitride; the refractory temperature of the refractory material is close to the temperature of the molten steel contained in the ladle baking device.

7. The plasma baking island system according to claim 1, characterized in that, The baking device is equipped with a temperature monitoring mechanism, which is used to monitor the temperature of the baking device.

8. The plasma baking island system according to claim 1, characterized in that, The transportation device includes AGV intelligent transport vehicles.

9. The plasma baking island system according to claim 1, characterized in that, The closed-loop pipeline is made of a high-temperature resistant material.

10. A plasma bread baking system, characterized in that, include: Plasma bread oven, bread baking device, conveying device, and closed-loop pipeline; among which, The plasma baking oven is installed at the baking station. The plasma baking oven uses inert gas as a medium to generate high-temperature plasma gas, and heats the baking device located at the baking station through the high-temperature plasma gas. The transport device is distributed according to a preset path, and the transport device carries and transports the baking device; the baking station is located in the preset path; The ladle baking device is correspondingly installed on the transport device, and the ladle baking device is used to receive molten steel. The closed-loop pipeline connects the plasma baking oven and the baking device, and is used to transmit the high-temperature plasma gas provided by the plasma baking oven to the baking device, and to transmit the high-temperature plasma gas provided by the baking device to the plasma baking oven.

Images