Converter with side flue

Abstract

The invention relates to the technical field of converter flue gas treatment equipment, and discloses a converter with a side flue, which comprises a converter body, a combustion system, a side flue body and a dust collection system, a combustion system is installed at the front end of the converter body, a converter material opening is formed in the middle of the converter body, a converter smoke outlet is formed in the rear end of the converter body, the converter smoke outlet is communicated with a side flue body through a rotating barrel, the upper end of the side flue body is connected with a dust collection system through a dust collection flue pipe, and the dust collection system is used for conducting follow-up purification treatment on collected smoke. The converter smoke outlet is independently formed in the end of the converter body and is separated from the feeding port and the discharging port, smoke is prevented from being mixed with materials and slag, the smoke collection purity is improved, the follow-up treatment difficulty is reduced, the converter smoke outlet is in butt joint with the side flue all the time when the converter body rotates, continuous smoke collection is achieved, and the converter smoke collection efficiency is improved. And the unorganized emission is avoided, the heat loss is reduced, and the energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of converter flue gas treatment equipment, and more specifically, to a converter with a side flue. Background Technology

[0002] During the converter smelting process, a large amount of flue gas containing dust, carbon monoxide, and other components is continuously generated. This flue gas needs to be collected and treated promptly and effectively to avoid environmental pollution and to recover useful resources. The side flue, as a crucial component for collecting and guiding converter flue gas, directly affects the efficiency of flue gas collection and the effectiveness of subsequent treatment. However, existing converter side flues suffer from unreasonable structural design, poor flue gas guidance, and inconvenient maintenance, thus impacting the overall performance of converter flue gas treatment.

[0003] The existing converter side flue has the following problems:

[0004] 1. The conventional structure of a converter includes a converter cylinder, a rotating structure, inlet and outlet ports, a flue, and a combustion system. However, the flue is located in the middle of the converter cylinder and shares an outlet with the inlet and outlet ports. This functional overlap leads to interference from materials and slag in flue gas collection, resulting in low collection efficiency. Furthermore, since traditional converters only have one flue, the flue rotates synchronously with the converter cylinder when it rotates. When the converter is being charged or the smelting angle is being adjusted, the flue cannot maintain a stable connection with the dust collection system, causing interruption of flue gas collection, serious fugitive emissions, and significant heat loss, thus increasing energy consumption.

[0005] 2. The traditional converter side flue and dust collection system connection structure design is rudimentary. The interface between the converter flue and the dust collection system is not effectively sealed, which easily leads to flue gas leakage. In addition, the internal flow field design of the converter flue is unreasonable, resulting in high flue gas flow resistance and easy dust deposition, which leads to low dust collection efficiency and difficulty in meeting environmental emission standards.

[0006] 3. Traditional converters do not have convenient maintenance access in the side flue. When a fault occurs inside the flue, maintenance personnel cannot clean and repair it quickly and safely, which prolongs equipment downtime and affects production progress. Summary of the Invention

[0007] In view of this, the present invention proposes a converter with a side flue, which aims to solve the technical problems existing in the prior art.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A converter with a side flue includes a converter body, a combustion system, a side flue body, and a dust collection system. The converter body is a horizontal cylindrical structure. The combustion system is installed at the front end of the converter body to provide a heat source for smelting within the converter body. A converter feed inlet is located in the middle of the converter body for feeding and discharging slag or molten metal after smelting. A converter flue gas outlet is located at the rear end of the converter body, and the flue gas outlet is connected to the side flue body through a matching rotating cylinder. The section has a side flue channel for collecting and transmitting the flue gas discharged from the converter body; the front end of the rotating cylinder is directly fixed to the rear end cover of the converter body with the converter flue gas outlet, and the rear end of the rotating cylinder is rotatably embedded in the circular side flue connection port of the side flue body, and the rotating cylinder and the circular side flue connection port are kept sealed; the upper end of the side flue body is connected to the dust collection system through the dust collection flue pipe, the dust collection system is used for subsequent purification treatment of the collected flue gas, and an induced draft fan is installed in the dust collection system.

[0009] Preferably, the rotating cylinder is lined with refractory material, and the space between the rotating cylinder and the inner wall of the circular side flue connection port of the side flue body is filled with high-temperature resistant flexible filler, which is continuously pressed by the pressure cap located outside the circular side flue connection port and the outer wall of the rotating cylinder.

[0010] Preferably, the outer layer of the side flue body is a steel water jacket structure, the inner wall of the steel water jacket structure is lined with refractory material, and the side flue channel inside the side flue body is a rectangular frame structure; the steel water jacket structure includes the main water jacket of the side flue and the top water jacket of the side flue, the lower end of the dust collection flue pipe is sealed to the flue gas outlet opened in the middle of the top water jacket of the side flue, and the upper end of the dust collection flue pipe is sealed to the inlet pipe of the dust collection system; the top water jacket of the side flue is also provided with water jacket inlet and outlet pipes.

[0011] Preferably, during installation, after the lower end of the dust collection flue pipe extends into the flue gas outlet in the middle of the top water jacket of the side flue, the sealing filler is first filled into the formed connection gap, and then the initial seal is achieved between the flue gas outlet flange of the top water jacket and the flange of the dust collection flue pipe with a sealing gasket. Finally, the two corresponding flanges are connected into a whole by welding.

[0012] Preferably, the dust collection flue pipe is a water-cooled component, and the dust collection flue pipe is inclinedly connected to the top water jacket of the side flue, with an installation angle of 35 to 60° between the dust collection flue pipe and the top plane of the top water jacket of the side flue; a support member is installed above the top water jacket of the side flue to support and fix the dust collection flue pipe.

[0013] Preferably, the front of the side flue body is also provided with a maintenance manhole for inspection, maintenance, and daily cleaning of production dust.

[0014] Preferably, the converter body is driven to rotate by a rotation control system, which includes a drive motor, a reducer connected to the drive motor, and a pinion mounted on the output shaft of the reducer. A large gear ring that meshes with the pinion is fixed around the outer periphery of the converter body. When the pinion rotates, it drives the large gear ring and the entire converter body to rotate, and the rotating cylinder rotates coaxially with the converter body.

[0015] Preferably, the converter body is externally mounted with roller supports to guide the converter body to move in a circular motion along a fixed trajectory and to provide support for the converter body during rotation.

[0016] Preferably, the combustion system is also equipped with an air or oxygen-enriched combustion system, which precisely controls the melting temperature in the furnace by adjusting the oxygen concentration and fuel supply.

[0017] Preferably, the outer layer of the converter body is a steel shell, the inner wall of the steel shell is lined with refractory material, and the converter feed port in the middle of the converter body is also integrally constructed with the refractory material inside the converter body.

[0018] Compared with the prior art, the converter with a side flue of the present invention has the following beneficial effects: (1) This invention solves the problem of interrupted flue gas collection caused by the rotation of a single flue gas outlet of a traditional converter as the furnace body rotates. By embedding and sealing the rotating cylinder with the side flue gas, the flue gas outlet of the converter is always connected to the side flue gas when the converter body rotates, thus realizing continuous collection of flue gas, eliminating unorganized emissions, reducing heat loss, and reducing energy consumption.

[0019] (2) The invention solves the problems of low dust collection efficiency and poor connection with the dust collection system in traditional converter flue. The side flue channel in this invention adopts a rectangular cross-section design, which reduces the flow resistance of flue gas. The water-cooled structure design at the top of the side flue body prevents dust from accumulating and clogging. At the same time, the flue gas negative pressure is adjusted by the induced draft fan, which improves the flue gas collection efficiency, ensures that the dust collection system receives flue gas stably, and greatly improves the dust collection effect.

[0020] (3) This invention solves the problem of low collection purity caused by the shared channel between the flue gas and materials and slag in traditional converters. The flue gas outlet of the converter is set separately at the end of the converter body, separate from the feeding port and the discharge port, so as to avoid the flue gas from mixing with materials and slag, improve the collection purity of flue gas, and reduce the difficulty of subsequent treatment.

[0021] (4) This invention solves the problem of inconvenient inspection and maintenance of traditional structures. It features a large-sized inspection manhole on the front of the side flue body and is equipped with safety protection facilities, which makes it easy for maintenance personnel to quickly enter the flue for cleaning, inspection and maintenance. This makes dust cleaning and refractory material maintenance inside the side flue more convenient, effectively reducing equipment downtime and improving the continuity and efficiency of converter production.

[0022] (5) The present invention has a reasonable structural design and high flue gas collection efficiency. The rotatable and sealed connection design between the side flue body and the converter body ensures that the flue gas can continuously enter the side flue at any rotation angle of the converter body without any collection interruption. The flue cross section and internal structure design are optimized, the flue gas flow resistance is small, and with the help of negative pressure regulation, the flue gas collection efficiency is very high.

[0023] (6) The present invention has good structural sealing and excellent environmental performance. The connection between the side flue body and the converter body adopts high temperature resistant sealing parts, the water jacket of the side flue itself is combined with refractory materials, and the sealing flange and sealing gasket design at each interface ensure the sealing performance of the entire flue gas collection system.

[0024] (7) The present invention has strong high temperature resistance and long equipment life. The side flue is lined with high fire resistance refractory bricks. The main water jacket of the side flue and the top water jacket of the side flue can withstand the scouring of high temperature flue gas. At the same time, the temperature of the flue shell is controlled within a safe range to avoid equipment deformation or damage due to high temperature. The overall service life of the side flue is long.

[0025] (8) This invention has strong adaptability and wide applicability. The size of the side flue can be flexibly designed according to the production needs of the converter. The combustion system can be adapted to various fuels such as diesel and natural gas. Moreover, the flue gas negative pressure and smelting temperature adjustment range is wide, which can meet the smelting and flue gas collection needs of different materials. It is applicable to various metallurgical converters, has strong practicality, and has broad prospects for promotion. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of a converter with a side flue according to the present invention.

[0028] Figure 2 This is a schematic diagram of the converter body in a converter with a side flue according to the present invention.

[0029] Figure 3 This is a side view of the converter body in a converter with a side flue according to the present invention.

[0030] Figure 4 This is a side view of the side flue body in a converter with a side flue according to the present invention.

[0031] Figure 5 This is a schematic diagram of the installation of the dust collection flue pipe in this invention.

[0032] In the diagram: 1-Converter body, 2-Combustion system, 3-Side flue body, 4-Converter feed inlet, 5-Rotating cylinder, 6-Rear end cover of converter body, 7-Circular side flue connection port, 8-Dust collection flue pipe, 9-Side flue main body water jacket, 10-Side flue top water jacket, 11-Water jacket inlet and outlet pipes, 12-Refractory material, 13-Supporting component, 14-Maintenance manhole, 15-Drive motor, 16-Reducer, 17-Pinary gear, 18-Large gear ring, 19-Roller support. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below, examples of which are illustrated 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 intended to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] Example: like Figures 1-5 As shown, the present invention provides a converter with a side flue, which mainly includes a converter body 1, a combustion system 2, a side flue body 3, and a dust collection system.

[0037] Specifically, the converter body 1 is a horizontal cylindrical structure and is the core area for the smelting process and flue gas generation. A combustion system 2 is installed at the front end of the converter body 1 to provide a heat source for smelting inside the converter body 1. A converter feed port 4 is provided in the middle of the converter body 1 for feeding and discharging slag or molten metal after smelting. A converter flue gas outlet is provided at the rear end of the converter body 1. The converter flue gas outlet is connected to the side flue body 3 through a matching rotating cylinder 5. The side flue body 3 has a side flue channel inside to collect and transmit the flue gas discharged from the converter body 1.

[0038] Furthermore, the front end of the rotating cylinder 5 is directly fixed to the rear end cover 6 of the converter body with the converter flue gas outlet, and the rear end of the rotating cylinder 5 is rotatably embedded in the circular side flue connection port 7 of the side flue body 3, and the rotating cylinder 5 and the circular side flue connection port 7 are kept in a sealed connection.

[0039] In this embodiment, the rotating cylinder 5 serves as the channel for high-temperature flue gas to enter the side flue inside the converter. The diameter of the converter flue gas outlet on the rear end cover 6 of the converter is designed according to the converter tonnage to ensure smooth flue gas discharge and avoid flue gas stagnation due to narrow channels. Furthermore, the circular side flue connection port 7 of the side flue body 3 must match the converter flue gas outlet to ensure corresponding installation at both ends of the rotating cylinder.

[0040] In practice, the rotating cylinder can be a short steel pipe with a thickness of 14~20mm and a length of 200~500mm. During installation, the short steel pipe is embedded into the circular side flue connection port reserved in the side flue body, with an embedding depth of 30~50mm.

[0041] More specifically, the rotating cylinder 5 is lined with refractory material, and there is an annular cavity with a 2-5mm interval between the inner wall of the circular side flue connection port of the rotating cylinder 5 and the side flue body 3, so as to ensure the rotation space of the rotating cylinder 5. At the same time, the annular cavity is filled with high-temperature resistant flexible filler (such as graphite packing, ceramic fiber, etc.). The setting of high-temperature resistant flexible filler ensures that the rotation angle is not affected when the converter body needs to rotate for production, and ensures the sealing between the rotating cylinder 5 and the circular side flue connection port 7.

[0042] In this embodiment, the high-temperature resistant flexible packing is continuously pressed by the cap located outside the circular side flue connection port and the outer wall of the rotating cylinder. That is, the high-temperature resistant flexible packing is always in close contact with the outer surface of the rotating cylinder to form a dynamic friction seal when the rotating cylinder rotates, further preventing flue gas leakage. In practice, the wear of the packing can also be compensated periodically by tightening bolts.

[0043] By adopting the above technical solution, when the converter body rotates due to the need for feeding, smelting angle adjustment, etc., the rotatable cylinder rotates synchronously with the converter body, while the side flue body remains fixed. This not only does not affect the rotation angle of the furnace body, but also ensures the sealing of the connection parts and effectively prevents flue gas leakage.

[0044] The upper end of the side flue body 3 is connected to the dust collection system through the dust collection flue pipe 8. The flue gas produced by the material in the converter furnace body 1 in the smelting mode flows to the side flue channel through the converter flue gas outlet, and finally enters the dust collection system through the dust collection flue pipe 8. The dust collection system is used to perform subsequent purification treatment on the collected flue gas, and an induced draft fan is installed in the dust collection system.

[0045] Furthermore, in this embodiment, the outer layer of the side flue body 3 is a steel water jacket structure (made of water-cooled water jacket splicing and sealing), and the inner wall of the steel water jacket structure is closely fitted with refractory material 12 to shape and seal the side flue. The side flue channel inside the side flue body 3 has a rectangular frame structure.

[0046] More specifically, the above-mentioned steel water jacket structure includes a side flue main water jacket 9 and a side flue top water jacket 10. The lower end of the dust collection flue pipe 8 is sealed to the flue gas outlet opened in the middle of the side flue top water jacket 10, and the upper end of the dust collection flue pipe 8 is sealed to the flue gas inlet pipe of the dust collection system. The side flue top water jacket 10 is also provided with water jacket inlet and outlet water pipes 11.

[0047] In a further specific embodiment, in order to ensure the sealing of the connection between the dust collection flue pipe 8 and the flue gas outlet in the middle of the top water jacket 10 of the side flue, during installation, after the lower end of the dust collection flue pipe 8 extends into the flue gas outlet in the middle of the top water jacket 10 of the side flue (the insertion depth is generally 100~150mm), the sealing filler is first filled into the connection gap, and then the initial seal is achieved between the flue gas outlet flange of the top water jacket and the flange of the dust collection flue pipe with a sealing gasket. Finally, the two corresponding flanges are connected into a whole by welding.

[0048] In a further specific embodiment, the dust collection flue pipe 8 is a water-cooled component, which facilitates the cooling of this part of the flue gas.

[0049] Furthermore, the dust collection flue pipe 8 is inclinedly connected to the top water jacket 10 of the side flue, and the dust collection flue pipe 8 and the top plane of the top water jacket 10 of the side flue are at an installation angle of 35~60°. This facilitates the collection and sinking of dust, and the sinking dust is collected at the bottom of the side flue channel by natural gravity.

[0050] In addition, a support member 13 is installed above the top water jacket 10 of the side flue to support and fix the dust collection flue pipe 8.

[0051] In this invention, the dust collection flue pipe, together with the downstream dust collection system and induced draft fan, forms a complete dust collection system for the converter, so as to collect dust and control the negative pressure of the system.

[0052] In a further specific embodiment, the front of the side flue body 3 is also provided with a maintenance manhole 14 for maintenance, inspection and daily production dust cleaning.

[0053] In a further specific embodiment, the converter body 1 is driven to rotate by a rotation control system. The rotation control system includes a drive motor 15, a reducer 16 connected to the drive motor 15, and a pinion 17 mounted on the output shaft of the reducer. A large gear ring 18 that meshes with the pinion 17 is fixed around the outer periphery of the converter body 1. The pinion 17 and the large gear ring 18 form a gear pair. When the pinion 17 rotates, it will drive the large gear ring 18 and the entire converter body 1 to rotate, thereby tilting. The rotating cylinder 5 will also rotate coaxially with the converter body.

[0054] In a further specific embodiment, a roller support 19 is installed on the outside of the converter body 1 to guide the converter body to make circular motion along a fixed trajectory and to provide support for the converter body when rotating. The roller support 19 can ensure the smoothness of the converter body rotation and prevent the converter body from shifting due to its own weight or thermal deformation.

[0055] In a further specific embodiment, the combustion system 2 can use various fuels such as diesel and natural gas, and the combustion system 2 is also equipped with an air or oxygen-enriched combustion system. By adjusting the oxygen concentration and fuel supply, the melting temperature in the furnace can be precisely controlled to meet the melting requirements of different materials.

[0056] In a further specific embodiment, the outer layer of the converter body 1 is a high-strength steel shell, which ensures the overall structural strength of the furnace body and can withstand the high temperature and pressure impact during the smelting process; the inner wall of the steel shell is lined with high-refractory refractory materials (such as magnesia-chrome bricks), which can effectively isolate high temperature, protect the steel shell from damage, and extend the service life of the furnace body; at the same time, the converter feed port 4 in the middle of the converter body 1 is also integrally constructed of the refractory materials inside the converter body 1.

[0057] In this invention, by coordinating the structural components such as the converter body 1, combustion system 2, rotation control system, side flue body 3, converter feed port 4, dust collection flue pipe 8, and dust collection system, efficient collection and diversion of converter flue gas is achieved.

[0058] The working process of the converter furnace body is as follows: When charging is required, the rotation control system will drive the converter body counterclockwise to tilt upwards by 70-90 degrees, allowing the material to slide smoothly into the furnace from the charging port and preventing material splashing. After charging is completed, the converter body will be driven clockwise to rotate 70-90 degrees, and the combustion system will provide heat to the furnace to start converter production. At the end of the converter production, following the principle of slag removal first and then metal removal, the converter body will be driven clockwise again by 20-30 degrees to align the charging port downwards with the center of the slag ladle and begin slag removal. After slag removal is completed, the converter body will be driven clockwise again by 10-20 degrees to align the charging port downwards with the molten metal ladle and complete the discharge operation. Finally, the converter body will be driven counterclockwise to rotate upwards to the charging position, and the cycle will be repeated.

[0059] In the above smelting mode, the firepower is adjusted by the burner control panel in the combustion system according to the material characteristics, and the negative pressure of the converter flue gas is controlled by the frequency of the induced draft fan in the dust collection system, so as to control the smelting temperature at 850~1350℃.

[0060] The following is a specific operation process of a converter with a side flue provided in one embodiment: 1. During feeding, the rotary control system drives the converter body to tilt upwards by 80 degrees counterclockwise, and feeds 50 tons of raw materials into the furnace through the feed port via the feeding platform; after feeding is completed, rotate the converter body clockwise 180 degrees to the horizontal position. 2. Start the combustion system, adjust the oxygen concentration to 60%, the natural gas flow rate to 80 m³ / h, and raise the furnace temperature to 1300℃; at the same time, adjust the frequency of the induced draft fan in the dust collection system to 40 Hz and control the negative pressure in the furnace to -50 Pa. 3. The high-temperature flue gas generated inside the converter furnace enters the side flue gas channel through the converter flue gas outlet at the end. In the side flue gas channel, the flue gas is cooled to 600°C by the water cooling structure, and some dust settles to the bottom of the side flue gas channel due to gravity. 4. When the converter body reaches the end of production, follow the principle of slag removal first and metal removal later. To remove slag, rotate the converter body 25 degrees clockwise, align the converter feed port downwards with the center of the slag bag, and discharge about 15 tons of slag. 5. After slag removal is completed, rotate the converter body 15 degrees clockwise again, align the converter feed port downwards with the molten metal ladle, and discharge approximately 65 tons of metal. 6. After discharge is completed, drive the converter body counterclockwise to rotate upward to the feeding position (horizontal position) to enter the next production cycle; 7. During converter production, the negative pressure inside the furnace can be stabilized from -50 to -100 Pa by adjusting the frequency of the induced draft fan in the dust collection system. 8. Shut down the machine once a month, open the maintenance manhole, clean the dust accumulated at the bottom of the side flue passage, and inspect the converter.

[0061] This invention solves the technical defects of traditional side flues by optimizing the connection method between the side flue body and the converter body, the flue structure itself, and the docking design with the dust collection system, providing a brand-new equipment solution for converter flue gas collection and treatment.

[0062] This invention optimizes and improves the traditional converter flue, which has only one flue opening. When the converter body rotates, the flue opening also rotates, which cannot collect the flue gas generated during production to the dust collection system, resulting in problems of fugitive emissions and heat loss.

[0063] This invention, by setting a side flue body that is rotatably and sealingly connected to the converter body, avoids the problem of flue outlet position displacement and flue gas collection interruption caused by converter body rotation, effectively eliminates fugitive emissions of flue gas, reduces heat loss, and lowers energy consumption.

[0064] This invention improves the smoothness of flue gas flow within the side flue body by optimizing the internal flow field structure, adopting a water-cooled top design and sealed interface connection, enhancing the connection stability with the dust collection system, significantly improving the dust collection efficiency of converter flue gas, and meeting environmental emission standards.

[0065] The present invention provides a maintenance manhole on the front of the side flue body, which facilitates maintenance personnel to regularly enter the flue to inspect, clean dust and repair faulty parts, ensuring the long-term stable operation of the side flue, reducing equipment downtime and improving production efficiency.

[0066] This invention can be used in converters and dust collection systems for applications such as steelmaking, copper smelting, and precious metal production.

[0067] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0068] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A converter with a side flue, characterized in that, The system includes a converter body, a combustion system, a side flue, and a dust collection system. The converter body is a horizontal cylindrical structure. The combustion system is installed at the front end of the converter body to provide a heat source for smelting inside the converter. A converter feed inlet is located in the middle of the converter body for feeding and discharging slag or molten metal after smelting. A converter flue gas outlet is located at the rear end of the converter body, which is connected to the side flue body through a matching rotating cylinder. The side flue body has a side flue channel inside for collecting and transmitting the flue gas discharged from the converter body. The front end of the rotating cylinder is directly fixed to the rear end cover of the converter body with the converter flue gas outlet, and the rear end of the rotating cylinder is rotatably fitted into the circular side flue connection port of the side flue body, and the rotating cylinder and the circular side flue connection port are kept sealed. The upper end of the side flue body is connected to the dust collection system through a dust collection flue pipe. The dust collection system is used for subsequent purification treatment of the collected flue gas, and an induced draft fan is installed in the dust collection system.

2. A converter with a side flue according to claim 1, characterized in that, The rotating cylinder is lined with refractory material, and the inner wall of the circular side flue connection port of the rotating cylinder and the side flue body is filled with high-temperature resistant flexible filler. The high-temperature resistant flexible filler is continuously pressed by the pressure cap located outside the circular side flue connection port and the outer wall of the rotating cylinder.

3. A converter with a side flue according to claim 1, characterized in that, The outer layer of the side flue body is a steel water jacket structure, and the inner wall of the steel water jacket structure is lined with refractory material. The side flue channel inside the side flue body has a rectangular frame structure. The steel water jacket structure includes the main water jacket of the side flue and the top water jacket of the side flue. The lower end of the dust collection flue pipe is sealed to the flue gas outlet opened in the middle of the top water jacket of the side flue, and the upper end of the dust collection flue pipe is sealed to the inlet pipe of the dust collection system. The top water jacket of the side flue is also equipped with water jacket inlet and outlet pipes.

4. A converter with a side flue according to claim 3, characterized in that, During installation, after the lower end of the dust collection flue pipe extends into the flue gas outlet in the middle of the top water jacket of the side flue, the sealing filler is first filled into the joint gap, and then the initial seal is achieved between the flue gas outlet flange of the top water jacket and the flange of the dust collection flue pipe with a sealing gasket. Finally, the two corresponding flanges are connected into a whole by welding.

5. A converter with a side flue according to claim 3, characterized in that, The dust collection flue is a water-cooled component, and it is inclinedly connected to the top water jacket of the side flue. The dust collection flue and the top plane of the top water jacket of the side flue are at an installation angle of 35 to 60 degrees. A support component is installed above the top water jacket of the side flue to support and fix the dust collection flue.

6. A converter with a side flue according to claim 1, characterized in that, The front of the side flue body is also provided with a maintenance manhole for inspection, maintenance, and daily production dust cleaning.

7. A converter with a side flue according to claim 1, characterized in that, The converter body is driven to rotate by a rotation control system, which includes a drive motor, a reducer connected to the drive motor, and a small gear mounted on the output shaft of the reducer. A large gear ring that meshes with the small gear is fixed around the outer periphery of the converter body. When the small gear rotates, it drives the large gear ring and the entire converter body to rotate, and the rotating cylinder rotates coaxially with the converter body.

8. A converter with a side flue according to claim 1, characterized in that, The external installation of the converter body includes roller supports that guide the converter body to move in a circular motion along a fixed trajectory and provide support for the converter body during rotation.

9. A converter with a side flue according to claim 1, characterized in that, The combustion system is also equipped with an air or oxygen-enriched combustion system, which precisely controls the melting temperature inside the furnace by adjusting the oxygen concentration and fuel supply.

10. A converter with a side flue according to claim 1, characterized in that, The outer layer of the converter body is a steel shell, and the inner wall of the steel shell is lined with refractory material. The converter feed port in the middle of the converter body is also integrally constructed with refractory material from the converter body.

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