Submerged arc furnace production system and submerged arc furnace tail gas power generation device

Abstract

The utility model relates to the technical field of tail gas recycling, in particular to a submerged arc furnace production system and a submerged arc furnace tail gas power generation device. A submerged arc furnace, a tail gas treatment device and a submerged arc furnace tail gas power generation device are arranged in the submerged arc furnace production system, and the two ends of the tail gas treatment device are connected with the submerged arc furnace and the submerged arc furnace tail gas power generation device respectively. The tail gas generated by the submerged arc furnace is purified, the purified tail gas is discharged to the submerged arc furnace tail gas power generation device, the submerged arc furnace tail gas power generation device comprises a flow guide unit and a power generation unit, the power generation unit is breeze power generation equipment, the gas inlet end of the flow guide unit is connected with a tail gas treatment device, and the gas outlet end of the flow guide unit right faces wind wheel blades of the breeze power generation equipment. The tail gas is used for pushing wind wheel blades to rotate so as to drive a rotor of a generator of the breeze power generation equipment to rotate to generate electric energy; the opening degree of the air outlet end of the flow guide unit is adjustable so that the flow speed of the tail gas can adapt to kinetic energy needed by wind wheel blades of the breeze power generation equipment, and therefore the kinetic energy contained in the tail gas can be efficiently and stably converted into electric energy.

Description

Technical Field

[0001] This utility model relates to the field of tail gas recovery and utilization technology, and in particular to a ferroelectric furnace production system and a ferroelectric furnace tail gas power generation device. Background Technology

[0002] A submerged arc furnace (SAF) is an industrial electric arc furnace that uses an electric current passing through a conductive material immersed in a molten pool to generate heat, melting metal and promoting chemical reactions. Its working principle involves generating an electric arc between electrodes, utilizing the resistance between the electrodes and the slag to generate heat energy, thus melting the metal. For example, SAFs are used to produce calcium carbide, an important basic chemical raw material with wide applications in the chemical industry. It is mainly produced by the reduction reaction of coke (or semi-coke) and quicklime in a high-temperature electric arc furnace. During calcium carbide production, the furnace emits a large amount of tail gas, primarily composed of carbon monoxide, hydrogen, and small amounts of methane and nitrogen. This tail gas is characterized by high temperature and high pressure. Traditional tail gas treatment methods involve first removing large particulate matter and then sulfides from the tail gas before direct combustion. This method fails to recover the significant kinetic energy contained in the tail gas, resulting in energy waste and reduced tail gas recovery efficiency. Utility Model Content

[0003] In view of this, it is necessary to provide a ferroelectric furnace production system that can recover a large amount of kinetic energy contained in the exhaust gas in order to improve the efficiency of exhaust gas recovery and utilization.

[0004] It is also necessary to provide a power generation device using the tail gas from a ferroelectric furnace.

[0005] This utility model provides a ferroelectric furnace production system, including a ferroelectric furnace, a tail gas treatment device, and a ferroelectric furnace tail gas power generation device. The tail gas treatment device is connected to the ferroelectric furnace and the ferroelectric furnace tail gas power generation device at both ends. The tail gas treatment device purifies the tail gas generated by the ferroelectric furnace and discharges the purified tail gas to the ferroelectric furnace tail gas power generation device. The ferroelectric furnace tail gas power generation device includes a flow guiding unit and a power generation unit. The power generation unit is a micro-wind power generation device. The air inlet of the flow guiding unit is connected to the tail gas treatment device, and the air outlet is directly facing the wind turbine blades of the micro-wind power generation device, so as to use the tail gas to drive the wind turbine blades to rotate, thereby driving the rotor of the generator of the micro-wind power generation device to rotate and generate electricity. The opening of the air outlet of the flow guiding unit is adjustable so that the flow rate of the tail gas is adapted to the kinetic energy required by the wind turbine blades of the micro-wind power generation device.

[0006] Preferably, the electric arc furnace production system further includes a lime rotary kiln, wherein the electric arc furnace is a calcium carbide furnace, and the exhaust gas treatment device includes a high-pressure blower and an environmental protection blower. The two ends of the high-pressure blower are connected to the electric arc furnace and the lime rotary kiln respectively, and are used to send the exhaust gas generated by the electric arc furnace to the lime rotary kiln to consume the combustible gas in the exhaust gas when the limestone is calcined at high temperature in the lime rotary kiln. The lime rotary kiln is connected to the electric arc furnace and is used to transport the quicklime produced by high-temperature calcination to the electric arc furnace as raw material. The lime rotary kiln is also connected to the environmental protection blower and is used to send the exhaust gas generated by combustion in the lime rotary kiln to the environmental protection blower to filter large particulate dust in the exhaust gas. The environmental protection blower is connected to the flow guiding unit through a pipeline to send the filtered exhaust gas to the flow guiding unit.

[0007] Preferably, the flow guiding unit includes a flow guiding pipe, a flow guiding cavity, an adjusting plate, at least one adjusting rod, and at least one telescopic component. The two ends of the flow guiding pipe are respectively connected to the air outlet of the environmental protection fan and the air inlet of the flow guiding cavity. The air outlet of the flow guiding cavity is positioned facing the power generation unit so that the exhaust gas can be blown directly towards the power generation unit. One end of the adjusting plate is rotatably mounted on the top surface of the flow guiding cavity, and satisfies the following condition: the other end of the adjusting plate can adjust the opening of the air outlet of the flow guiding cavity as the adjusting plate rotates. One end of each adjusting rod is fixedly mounted on the side of the flow guiding cavity facing away from the air outlet, and the other end is connected to the fixed end of each telescopic component. The telescopic end of each telescopic component is fixedly connected to the adjusting plate so that the adjusting plate can be rotated by the telescopic movement of each telescopic component.

[0008] Preferably, the flow guiding unit further includes at least one flow velocity measuring element and a flow velocity regulating element. Each telescopic element is an electric telescopic rod. The flow velocity regulating element is electrically connected to each flow velocity measuring element and each telescopic element. Each flow velocity measuring element is uniformly installed in the flow guiding pipe to measure the gas flow velocity in the flow guiding pipe and transmit it to the flow velocity regulating element. The flow velocity regulating element is used to adjust the extension and retraction of each telescopic element according to the gas flow velocity in the flow guiding pipe to adjust the opening of the air outlet of the flow guiding cavity, thereby adjusting the exhaust gas velocity discharged from the air outlet of the flow guiding cavity.

[0009] Preferably, the power generation unit includes a wind turbine and at least one fixing assembly. The bottom end of the wind turbine is fixed to the ground. One end of each fixing assembly is fixedly installed on the wind turbine, and the other end is fixedly connected to the guide pipe, so that the guide pipe is fixedly connected to the wind turbine through each fixing assembly. Each fixing assembly includes at least two fixing rods, at least two adjusting rods, and a sleeve. One end of each fixing rod is fixedly connected to the wind turbine. Each fixing rod has a groove along its length. One end of each adjusting rod extends into the groove, and the other end is fixedly connected to the sleeve for fixing the guide pipe. Each fixing rod has at least one fixing hole evenly spaced, and each adjusting rod has at least one adjusting hole evenly spaced, so that the length of the fixing assembly can be adjusted by bolting each adjusting hole to different fixing holes.

[0010] Preferably, the electric arc furnace production system further includes a power transformer, the input end of which is electrically connected to the power generation unit, and the output end of which is electrically connected to the electrical equipment in the electric arc furnace production system.

[0011] This utility model also provides a ferroalloy furnace exhaust gas power generation device, which is used to connect with the exhaust gas treatment device of the ferroalloy furnace production system to generate electricity using the exhaust gas discharged from the exhaust gas treatment device. The ferroalloy furnace exhaust gas power generation device includes a flow guiding unit and a power generation unit. The power generation unit is a micro-wind power generation device. The air inlet of the flow guiding unit is used to connect with the exhaust gas treatment device of the ferroalloy furnace production system. The air outlet of the flow guiding unit is directly opposite the wind turbine blades of the micro-wind power generation device, so as to use the exhaust gas to drive the wind turbine blades to rotate, thereby driving the rotor of the generator of the micro-wind power generation device to rotate and generate electricity. The opening of the air outlet of the flow guiding unit is adjustable so that the flow rate of the exhaust gas is adapted to the kinetic energy required by the wind turbine blades of the micro-wind power generation device.

[0012] Preferably, the flow guiding unit includes a flow guiding pipe, a flow guiding cavity, an adjusting plate, at least one adjusting rod, and at least one telescopic component. The two ends of the flow guiding pipe are respectively connected to the air outlet of the environmental protection fan and the air inlet of the flow guiding cavity. The air outlet of the flow guiding cavity is positioned facing the power generation unit so that the exhaust gas can be blown directly towards the power generation unit. One end of the adjusting plate is rotatably mounted on the top surface of the flow guiding cavity, and satisfies the following condition: the other end of the adjusting plate can adjust the opening of the air outlet of the flow guiding cavity as the adjusting plate rotates. One end of each adjusting rod is fixedly mounted on the side of the flow guiding cavity facing away from the air outlet, and the other end is connected to the fixed end of each telescopic component. The telescopic end of each telescopic component is fixedly connected to the adjusting plate so that the adjusting plate can be rotated by the telescopic movement of each telescopic component.

[0013] Preferably, the flow guiding unit further includes at least one flow velocity measuring element and a flow velocity regulating element. Each telescopic element is an electric telescopic rod. The flow velocity regulating element is electrically connected to each flow velocity measuring element and each telescopic element. Each flow velocity measuring element is uniformly installed in the flow guiding pipe to measure the gas flow velocity in the flow guiding pipe and transmit it to the flow velocity regulating element. The flow velocity regulating element is used to adjust the extension and retraction of each telescopic element according to the gas flow velocity in the flow guiding pipe to adjust the opening of the air outlet of the flow guiding cavity, thereby adjusting the exhaust gas velocity discharged from the air outlet of the flow guiding cavity.

[0014] Preferably, the power generation unit includes a wind turbine and at least one fixing assembly. The bottom end of the wind turbine is fixed to the ground. One end of each fixing assembly is fixedly installed on the wind turbine, and the other end is fixedly connected to the guide pipe, so that the guide pipe is fixedly connected to the wind turbine through each fixing assembly. Each fixing assembly includes at least two fixing rods, at least two adjusting rods, and a sleeve. One end of each fixing rod is fixedly connected to the wind turbine. Each fixing rod has a groove along its length. One end of each adjusting rod extends into the groove, and the other end is fixedly connected to the sleeve for fixing the guide pipe. Each fixing rod has at least one fixing hole evenly spaced, and each adjusting rod has at least one adjusting hole evenly spaced, so that the length of the fixing assembly can be adjusted by bolting each adjusting hole to different fixing holes.

[0015] In the aforementioned ferroalloy furnace production system and ferroalloy furnace tail gas power generation device, the air inlet of the flow guiding unit is used to connect to the tail gas treatment device of the ferroalloy furnace production system, and the air outlet of the flow guiding unit is directly opposite the wind turbine blades of the micro-wind power generation device, so as to use the tail gas to drive the wind turbine blades to rotate, thereby driving the rotor of the generator of the micro-wind power generation device to rotate and generate electricity; the opening of the air outlet of the flow guiding unit is adjustable so that the flow rate of the tail gas is adapted to the kinetic energy required by the wind turbine blades of the micro-wind power generation device, thereby ensuring that the power generation unit can efficiently and stably convert the kinetic energy contained in the tail gas into electrical energy and improve the tail gas recovery and utilization efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the electric arc furnace production system of this application.

[0017] Figure 2 This is a schematic diagram showing the connection between the exhaust gas treatment device and the lime rotary kiln of this application.

[0018] Figure 3 This is a top-down view of the electrolytic furnace tail gas power generation device of this application.

[0019] Figure 4 This is a top-down view of the fixed group of this application.

[0020] Figure 5 This is a flowchart of the production system of the electric arc furnace in this application.

[0021] In the diagram: 10, 20, 30, 31, 32, 40, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 50, 50, 60, 60. Detailed Implementation

[0022] The technical solutions and effects of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0023] Please refer to Figure 1 This utility model provides a ferroelectric furnace production system 10, including a ferroelectric furnace 20, a tail gas treatment device 30, and a ferroelectric furnace tail gas power generation device 40. The tail gas treatment device 30 is connected to the ferroelectric furnace 20 and the ferroelectric furnace tail gas power generation device 40 at both ends. The tail gas treatment device 30 purifies the tail gas generated by the ferroelectric furnace 20 and discharges the purified tail gas to the ferroelectric furnace tail gas power generation device 40. The ferroelectric furnace tail gas power generation device 40 includes a flow guiding unit 41 and a power generation unit 42. The power generation unit 42 is a micro-wind power generation device. The flow guiding unit 41... The exhaust end is connected to the exhaust gas treatment device 30, and the exhaust end is directly facing the wind turbine blades of the micro wind power generation device. The exhaust gas is used to drive the wind turbine blades to rotate, which in turn drives the rotor of the generator of the micro wind power generation device to rotate and generate electricity, thereby converting the large amount of kinetic energy contained in the exhaust gas into electrical energy. The opening of the exhaust end of the flow guiding unit 41 is adjustable so that the flow rate of the exhaust gas is adapted to the kinetic energy required by the wind turbine blades of the micro wind power generation device, thereby improving the power generation efficiency of the micro wind power generation device and preventing the micro wind power generation device from failing to start due to excessively slow exhaust gas flow rate or from being overloaded due to excessively fast exhaust gas flow rate.

[0024] In this embodiment, the micro-wind power generation equipment is a vertical axis wind turbine generator set from Jiangsu Dekema Electric Co., Ltd.

[0025] Please refer to Figure 1 and Figure 2Furthermore, the electric arc furnace production system 10 also includes a lime rotary kiln 50. The electric arc furnace 20 is a calcium carbide furnace. The tail gas treatment device 30 includes a high-pressure blower 31 and an environmental protection blower 32. The two ends of the high-pressure blower 31 are connected to the electric arc furnace 20 and the lime rotary kiln 50, respectively, to send the tail gas generated by the electric arc furnace 20 to the lime rotary kiln 50, so as to consume the combustible gases, such as carbon monoxide, in the tail gas when the limestone is calcined at high temperature in the lime rotary kiln 50. The lime rotary kiln 50 is connected to the electric arc furnace 20 and is used to transport the quicklime produced by high-temperature calcination to the electric arc furnace 20 as raw material. The lime rotary kiln 50 is also connected to the environmental protection blower 32 to transport the quicklime produced by high-temperature calcination to the electric arc furnace 20 as raw material. The exhaust gas generated by combustion inside the rotary kiln 50 is sent to the environmental protection fan 32 to filter out large particulate dust in the exhaust gas. The environmental protection fan 32 is connected to the flow guiding unit 41 through a pipe to send the filtered exhaust gas to the flow guiding unit 41. In this way, after the exhaust gas generated by the calcium carbide furnace passes through the lime rotary kiln 50, the combustible gases such as carbon monoxide contained in the exhaust gas can be removed, thereby purifying the exhaust gas generated by the calcium carbide furnace. At the same time, the combustible gases in the exhaust gas generated by the calcium carbide furnace can become auxiliary fuel for the lime rotary kiln 50, thereby saving the fuel required for the high-temperature calcination of limestone by the lime rotary kiln 50, thus saving the energy required for the high-temperature calcination of limestone by the lime rotary kiln 50.

[0026] Please refer to Figure 3 Furthermore, the flow guiding unit 41 includes a flow guiding pipe 411, a flow guiding cavity 412, an adjusting plate 413, at least one adjusting rod 414, and at least one telescopic component 415. The two ends of the flow guiding pipe 411 are respectively connected to the air outlet of the environmental protection fan 32 and the air inlet of the flow guiding cavity 412. The air outlet of the flow guiding cavity 412 is positioned directly opposite the power generation unit 42 so that the exhaust gas can be blown directly towards the power generation unit 42. One end of the adjusting plate 413 is rotatably mounted on the top surface of the flow guiding cavity 412 and satisfies the following condition: the other end of the adjusting plate 413 can adjust the opening of the air outlet of the flow guiding cavity 412 as the adjusting plate 413 rotates. One end of each adjusting rod 414 is fixedly mounted on the side of the flow guiding cavity 412 away from the air outlet, and the other end is connected to the fixed end of each telescopic component 415. The telescopic end of each telescopic component 415 is fixedly connected to the adjusting plate 413 so that the adjusting plate 413 can be adjusted by the telescopic movement of each telescopic component 415.

[0027] In one embodiment, the operator can adjust the opening of the air outlet of the guide cavity 412 according to the speed of the exhaust gas flow in the guide pipe 411 by adjusting the opening of each telescopic component 415, thereby adjusting the exhaust gas flow rate towards the power generation unit 42. Specifically, when the exhaust gas flow rate is relatively fast, the telescopic components 415 are contracted to increase the opening of the air outlet of the guide cavity 412, thereby reducing the exhaust gas flow rate; when the exhaust gas flow rate is relatively slow, the telescopic components 415 are extended to decrease the opening of the air outlet of the guide cavity 412, thereby increasing the exhaust gas flow rate, thus ensuring that the exhaust gas flow rate discharged from the air outlet of the guide cavity 412 meets the requirements of the power generation unit 42. In this embodiment, the telescopic component 415 is a device whose length can be manually adjusted, such as a hydraulic rod.

[0028] In one embodiment, the flow guiding unit 41 further includes at least one flow velocity measuring element and a flow velocity regulating element. Each telescopic element 415 is an electrically operated telescopic rod. The flow velocity regulating element is electrically connected to each flow velocity measuring element and each telescopic element 415. Each flow velocity measuring element is uniformly installed inside the flow guiding pipe 411 to measure the gas flow velocity inside the flow guiding pipe 411 and transmit the data to the flow velocity regulating element. The flow velocity regulating element is used to adjust the extension and retraction of each telescopic element 415 according to the gas flow velocity inside the flow guiding pipe 411, thereby adjusting the opening of the air outlet end of the flow guiding cavity 412, and thus adjusting the flow guiding cavity 412. The exhaust gas velocity discharged from the outlet end; thus, the flow rate regulating component can drive each telescopic component 415 according to the exhaust gas velocity in the guide pipe 411. When the exhaust gas velocity is slow, each telescopic component 415 extends, reducing the opening of the outlet end of the guide cavity 412 to increase the exhaust gas velocity, thereby ensuring that the exhaust gas velocity discharged from the outlet end of the guide cavity 412 meets the requirements of the power generation unit 42; in this embodiment, the flow rate regulating component is a device capable of running a pre-set program, such as a microcontroller, and is equipped with a program to adjust the opening of the outlet end of the guide cavity 412 according to the wind speed.

[0029] Please refer to Figure 3 and Figure 4Furthermore, the power generation unit 42 includes a wind turbine 421 and at least one fixing assembly 422. The bottom end of the wind turbine 421 is fixed to the ground. One end of each fixing assembly 422 is fixedly installed on the wind turbine 421, and the other end is fixedly connected to the guide pipe 411, so that the guide pipe 411 and the wind turbine 421 are fixedly connected through each fixing assembly 422. Each fixing assembly 422 includes at least two fixing rods 4221, at least two adjusting rods 4222, and a sleeve 4223. One end of each fixing rod 4221 is fixedly connected to the wind turbine 421, and the upper edge of each fixing rod 4221 is fixedly connected to the wind turbine 421. A groove is provided along the length of the fixing rod 4221. One end of each adjusting rod 4222 extends into the groove, and the other end is fixedly connected to the sleeve fitting 4223 for fixing and installing the guide pipe 411. At least one fixing hole 4224 is evenly provided on each fixing rod 4221, and at least one adjusting hole 4225 is evenly provided on each adjusting rod 4222. The length of the fixing group 422 is adjusted by bolting each adjusting hole 4225 to different fixing holes 4224. The length of each fixing group 422 can be adjusted according to the actual situation on site to facilitate the installation of the guide pipe 411.

[0030] In this embodiment, the wind turbine 421 is fixed on the ground, and the guide pipe 411 is fixedly connected to the wind turbine 421 through each fixing group 422, which can improve the stability of the guide pipe 411 and prevent the guide pipe 411 from shaking due to excessive exhaust gas speed inside the guide pipe 411.

[0031] Please refer to Figure 1 Furthermore, the electric arc furnace production system 10 also includes a power transformer 60. The input terminal of the power transformer 60 is electrically connected to the power generation unit 42, and the output terminal of the power transformer 60 is electrically connected to the electrical equipment in the electric arc furnace production system 10, so as to send the generated electrical energy to the electric arc furnace 20.

[0032] In this embodiment, the power transformation device 60 includes a 10kV substation and a 110kV substation. The 10kV substation is used to boost the voltage of the electrical energy generated by the power generation unit 42 to 10kV and transmit it to the 110kV substation. The 110kV substation is used to further boost the voltage of the electrical energy generated by the power generation unit 42 to 110kV and transmit the electrical energy to the electric arc furnace 20 through the 110kV transmission line to supply power to the electric arc furnace 20, thereby reducing the electrical energy required for the operation of the electric arc furnace 20 and reducing the cost of calcium carbide production.

[0033] Please refer to Figure 3This utility model also provides a ferroalloy furnace exhaust gas power generation device 40, which is used to connect to the exhaust gas treatment device 30 of the ferroalloy furnace production system 10. It generates electricity using the exhaust gas discharged from the exhaust gas treatment device 30. The ferroalloy furnace exhaust gas power generation device 40 includes a flow guiding unit 41 and a power generation unit 42. The power generation unit 42 is a micro-wind power generation device. The air inlet end of the flow guiding unit 41 is used to connect to the exhaust gas treatment device 30 of the ferroalloy furnace production system 10. The air outlet end of the flow guiding unit 41 is directly facing the wind turbine blades of the micro-wind power generation device, so as to use the exhaust gas to drive the wind turbine blades to rotate, thereby driving the rotor of the generator of the micro-wind power generation device to rotate and generate electrical energy, thus converting the large amount of kinetic energy contained in the exhaust gas into electrical energy. The opening of the air outlet end of the flow guiding unit 41 is adjustable so that the flow rate of the exhaust gas is adapted to the kinetic energy required by the wind turbine blades of the micro-wind power generation device, thereby improving the power generation efficiency of the micro-wind power generation device and preventing the micro-wind power generation device from failing to start due to excessively slow exhaust gas flow rate or from being overloaded due to excessively fast exhaust gas flow rate.

[0034] Please refer to Figure 3 Furthermore, the flow guiding unit 41 includes a flow guiding pipe 411, a flow guiding cavity 412, an adjusting plate 413, at least one adjusting rod 414, and at least one telescopic component 415. The two ends of the flow guiding pipe 411 are respectively connected to the air outlet of the environmental protection fan 32 and the air inlet of the flow guiding cavity 412. The air outlet of the flow guiding cavity 412 is positioned directly opposite the power generation unit 42 so that the exhaust gas can be blown directly towards the power generation unit 42. One end of the adjusting plate 413 is rotatably mounted on the top surface of the flow guiding cavity 412 and satisfies the following condition: the other end of the adjusting plate 413 can adjust the opening of the air outlet of the flow guiding cavity 412 as the adjusting plate 413 rotates. One end of each adjusting rod 414 is fixedly mounted on the side of the flow guiding cavity 412 away from the air outlet, and the other end is connected to the fixed end of each telescopic component 415. The telescopic end of each telescopic component 415 is fixedly connected to the adjusting plate 413 so that the adjusting plate 413 can be adjusted by the telescopic movement of each telescopic component 415.

[0035] Furthermore, the flow guiding unit 41 also includes at least one flow velocity measuring element and a flow velocity regulating element. Each telescopic element 415 is an electric telescopic rod. The flow velocity regulating element is electrically connected to each flow velocity measuring element and each telescopic element 415. Each flow velocity measuring element is evenly installed in the flow guiding pipe 411 to measure the gas flow velocity in the flow guiding pipe 411 and transmit it to the flow velocity regulating element. The flow velocity regulating element is used to adjust the extension and retraction of each telescopic element 415 according to the gas flow velocity in the flow guiding pipe 411, so as to adjust the opening of the air outlet of the flow guiding cavity 412, thereby adjusting the exhaust gas velocity discharged from the air outlet of the flow guiding cavity 412.

[0036] Please refer to Figure 3 and Figure 4Furthermore, the power generation unit 42 includes a wind turbine 421 and at least one fixing assembly 422. The bottom end of the wind turbine 421 is fixed to the ground. One end of each fixing assembly 422 is fixedly installed on the wind turbine 421, and the other end is fixedly connected to the guide pipe 411, so that the guide pipe 411 and the wind turbine 421 are fixedly connected through each fixing assembly 422. Each fixing assembly 422 includes at least two fixing rods 4221, at least two adjusting rods 4222, and a sleeve fitting 4223. One end of each fixing rod 4221 is connected to the wind turbine 421. 21. Fixed connection: Each fixed rod 4221 has a sliding groove along its length. One end of each adjusting rod 4222 extends into the sliding groove, and the other end is fixedly connected to the sleeve fitting 4223 for fixing the installation of the guide pipe 411. Each fixed rod 4221 has at least one fixed hole 4224 evenly distributed, and each adjusting rod 4222 has at least one adjusting hole 4225 evenly distributed, so as to adjust the length of the fixed assembly 422 by bolting each adjusting hole 4225 to different fixed holes 4224.

[0037] Example 1: Working process of the electric arc furnace production system 10

[0038] 1. After mixing semi-coke and quicklime, the mixture is transported to the electric arc furnace 20 to produce calcium carbide, generating a large amount of tail gas;

[0039] 2. The high-pressure blower 31 sends the exhaust gas generated by the electric arc furnace 20 to the lime rotary kiln 50;

[0040] 3. The lime rotary kiln 50 produces quicklime by calcining limestone at high temperature, and transports the quicklime to the electric arc furnace 20 as raw material for calcium carbide production; at the same time, the combustible gas in the tail gas generated by the electric arc furnace 20 is used as auxiliary fuel for combustion, and the tail gas generated by the lime rotary kiln 50 is discharged to the environmental protection fan 32.

[0041] 4. The environmental protection fan 32 removes large particles of dust such as ash from the exhaust gas emitted by the lime rotary kiln 50 to purify the exhaust gas and send it to the guide unit 41.

[0042] 5. The purified exhaust gas is blown from the air outlet of the flow guiding unit 41 to the power generation end of the power generation unit 42;

[0043] 6. The generator end of the generator unit 42 rotates under the blowing of the purified exhaust gas, generates electrical energy, and sends the electrical energy to the 10kV substation to increase the voltage;

[0044] The 7.10kV substation sends the boosted electrical energy to the 110kV substation for further voltage boosting;

[0045] The 8.110kV substation sends the boosted electrical energy to the electric arc furnace 20 to supply power to the electric arc furnace 20.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A submerged arc furnace production system, characterized in that, The device includes a ferroelectric furnace, a tail gas treatment device, and a ferroelectric furnace tail gas power generation device. The tail gas treatment device is connected to the ferroelectric furnace and the ferroelectric furnace tail gas power generation device at both ends. The tail gas treatment device purifies the tail gas generated by the ferroelectric furnace and discharges the purified tail gas to the ferroelectric furnace tail gas power generation device. The ferroelectric furnace tail gas power generation device includes a flow guiding unit and a power generation unit. The power generation unit is a micro-wind power generation device. The air inlet of the flow guiding unit is connected to the tail gas treatment device, and the air outlet is directly facing the wind turbine blades of the micro-wind power generation device, so as to use the tail gas to drive the wind turbine blades to rotate, thereby driving the rotor of the generator of the micro-wind power generation device to rotate and generate electricity. The opening of the air outlet of the flow guiding unit is adjustable so that the flow rate of the exhaust gas can be adapted to the kinetic energy required by the wind turbine blades of the micro wind power generation equipment.

2. The electric arc furnace production system as described in claim 1, characterized in that, The electric arc furnace production system also includes a lime rotary kiln, which is a calcium carbide furnace. The exhaust gas treatment device includes a high-pressure blower and an environmental protection blower. The two ends of the high-pressure blower are connected to the electric arc furnace and the lime rotary kiln, respectively, to send the exhaust gas generated by the electric arc furnace to the lime rotary kiln to consume the combustible gas in the exhaust gas during the high-temperature calcination of limestone in the lime rotary kiln. The lime rotary kiln is connected to the electric arc furnace to transport the quicklime produced by high-temperature calcination to the electric arc furnace as raw material. The lime rotary kiln is also connected to the environmental protection blower to send the exhaust gas generated by combustion in the lime rotary kiln to the environmental protection blower to filter large particulate dust in the exhaust gas. The environmental protection blower is connected to the flow guiding unit through a pipeline to send the filtered exhaust gas to the flow guiding unit.

3. The electric arc furnace production system as described in claim 1, characterized in that, The flow guiding unit includes a flow guiding pipe, a flow guiding cavity, an adjusting plate, at least one adjusting rod, and at least one telescopic component. The two ends of the flow guiding pipe are respectively connected to the air outlet of the environmental protection fan and the air inlet of the flow guiding cavity. The air outlet of the flow guiding cavity is positioned facing the power generation unit so that the exhaust gas can be blown directly towards the power generation unit. One end of the adjusting plate is rotatably mounted on the top surface of the flow guiding cavity, and the other end of the adjusting plate can adjust the opening of the air outlet of the flow guiding cavity as the adjusting plate rotates. One end of each adjusting rod is fixedly mounted on the side of the flow guiding cavity away from the air outlet, and the other end is connected to the fixed end of each telescopic component. The telescopic end of each telescopic component is fixedly connected to the adjusting plate so that the adjusting plate can be rotated by the telescopic movement of each telescopic component.

4. The electric arc furnace production system as described in claim 3, characterized in that, The flow guiding unit also includes at least one flow velocity measuring element and a flow velocity regulating element. Each telescopic element is an electrically operated telescopic rod. The flow velocity regulating element is electrically connected to each flow velocity measuring element and each telescopic element. Each flow velocity measuring element is evenly installed inside the flow guiding pipe to measure the gas flow velocity inside the flow guiding pipe and transmit the data to the flow velocity regulating element. The flow velocity regulating element is used to adjust the extension and retraction of each telescopic element according to the gas flow velocity inside the flow guiding pipe, so as to adjust the opening of the air outlet of the flow guiding cavity, thereby adjusting the exhaust gas velocity discharged from the air outlet of the flow guiding cavity.

5. The electric arc furnace production system as described in claim 3, characterized in that, The power generation unit includes a wind turbine and at least one fixing assembly. The bottom end of the wind turbine is fixed to the ground. One end of each fixing assembly is fixedly installed on the wind turbine, and the other end is fixedly connected to the guide pipe, so that the guide pipe is fixedly connected to the wind turbine through each fixing assembly. Each fixing assembly includes at least two fixing rods, at least two adjusting rods, and a sleeve. One end of each fixing rod is fixedly connected to the wind turbine. Each fixing rod has a groove along its length. One end of each adjusting rod extends into the groove, and the other end is fixedly connected to the sleeve for fixing the guide pipe. Each fixing rod has at least one fixing hole evenly spaced, and each adjusting rod has at least one adjusting hole evenly spaced, so that the length of the fixing assembly can be adjusted by bolting the adjusting holes to the different fixing holes.

6. The electric arc furnace production system as described in claim 1, characterized in that, The electric arc furnace production system also includes a power transformer, the input of which is electrically connected to the power generation unit, and the output of which is electrically connected to the electrical equipment in the electric arc furnace production system.

7. A ferroalloy furnace tail gas power generation device, used for connection to a tail gas treatment device of the ferroalloy furnace production system according to any one of claims 1 to 6, for generating electricity using the tail gas discharged from the tail gas treatment device, characterized in that, It includes a flow guiding unit and a power generation unit. The power generation unit is a micro-wind power generation device. The air inlet of the flow guiding unit is used to connect to the tail gas treatment device of the electric arc furnace production system. The air outlet of the flow guiding unit is directly facing the wind turbine blades of the micro-wind power generation device, so as to use the tail gas to drive the wind turbine blades to rotate, thereby driving the rotor of the generator of the micro-wind power generation device to rotate and generate electricity. The opening of the air outlet of the flow guiding unit is adjustable so that the flow rate of the exhaust gas can be adapted to the kinetic energy required by the wind turbine blades of the micro wind power generation equipment.

8. The electric arc furnace tail gas power generation device as described in claim 7, characterized in that, The flow guiding unit includes a flow guiding pipe, a flow guiding cavity, an adjusting plate, at least one adjusting rod, and at least one telescopic component. The two ends of the flow guiding pipe are respectively connected to the air outlet of the environmental protection fan and the air inlet of the flow guiding cavity. The air outlet of the flow guiding cavity is positioned facing the power generation unit so that the exhaust gas can be blown directly towards the power generation unit. One end of the adjusting plate is rotatably mounted on the top surface of the flow guiding cavity, and the other end of the adjusting plate can adjust the opening of the air outlet of the flow guiding cavity as the adjusting plate rotates. One end of each adjusting rod is fixedly mounted on the side of the flow guiding cavity away from the air outlet, and the other end is connected to the fixed end of each telescopic component. The telescopic end of each telescopic component is fixedly connected to the adjusting plate so that the adjusting plate can be rotated by the telescopic movement of each telescopic component.

9. The electric arc furnace tail gas power generation device as described in claim 8, characterized in that, The flow guiding unit also includes at least one flow velocity measuring element and a flow velocity regulating element. Each telescopic element is an electrically operated telescopic rod. The flow velocity regulating element is electrically connected to each flow velocity measuring element and each telescopic element. Each flow velocity measuring element is evenly installed inside the flow guiding pipe to measure the gas flow velocity inside the flow guiding pipe and transmit the data to the flow velocity regulating element. The flow velocity regulating element is used to adjust the extension and retraction of each telescopic element according to the gas flow velocity inside the flow guiding pipe, so as to adjust the opening of the air outlet of the flow guiding cavity, thereby adjusting the exhaust gas velocity discharged from the air outlet of the flow guiding cavity.

10. The electric arc furnace tail gas power generation device as described in claim 8, characterized in that, The power generation unit includes a wind turbine and at least one fixing assembly. The bottom end of the wind turbine is fixed to the ground. One end of each fixing assembly is fixedly installed on the wind turbine, and the other end is fixedly connected to the guide pipe, so that the guide pipe is fixedly connected to the wind turbine through each fixing assembly. Each fixing assembly includes at least two fixing rods, at least two adjusting rods, and a sleeve. One end of each fixing rod is fixedly connected to the wind turbine. Each fixing rod has a groove along its length. One end of each adjusting rod extends into the groove, and the other end is fixedly connected to the sleeve for fixing the guide pipe. Each fixing rod has at least one fixing hole evenly spaced, and each adjusting rod has at least one adjusting hole evenly spaced, so that the length of the fixing assembly can be adjusted by bolting the adjusting holes to the different fixing holes.

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