Converter steelmaking plant three times dust removal system

Abstract

The present application relates to a kind of converter steelmaking plant three times dust removal system, first dust hood is located in the roof of charging span, second dust hood and gas building are located in the top of top frame, dust removal main pipe is connected with first dust hood and plant outside, first dust removal branch pipe is connected with second dust hood and the part of dust removal main pipe located outside the plant, second dust removal branch pipe is connected with gas building and the part of dust removal main pipe located outside the plant, fan is arranged in dust removal main pipe, to make the smoke and dust in dust removal main pipe accelerate to discharge outward, flux alloy feeding system is arranged in high-level frame, and located below second dust hood, feeding belt is arranged on the belt layer platform of high-level frame, and located above flux alloy feeding system, feeding belt is used to feed flux alloy feeding system, baffle is arranged between charging span and converter span, partition is arranged between dust hood and gas building, partition connects the belt layer platform of high-level frame and the side wall of second dust hood, and the length of partition is equal to the length of baffle.

Description

Technical Field

[0001] This invention relates to the field of converter steelmaking technology, and in particular to a tertiary dust removal system for converter steelmaking workshops. Background Technology

[0002] To improve the working environment for operators and meet national ultra-low emission requirements, the upper-level frame area of ​​the converter workshop is equipped with a primary dust removal system, a secondary dust removal system, and a tertiary dust removal system. The primary dust removal system is equipped with a primary dust collection device at the converter mouth to collect the dust generated during converter blowing; most of the CO in the dust is recovered and reused. The secondary dust removal system, located entirely enclosed above the converter, has several dust collection points. It primarily collects dust generated during iron and scrap steel charging and steel tapping, and also collects dust escaping from the primary dust collection device and the furnace mouth during the smelting process.

[0003] Based on the primary and secondary dust removal systems for converters, most domestic steelmaking workshops have installed tertiary dust removal systems for converters. However, the dust removal effect of the tertiary dust removal system in the relevant technology is not ideal, resulting in a large amount of smoke and dust still accumulating in the workshop, especially at the top of the high-rise frame, which seriously affects the health of the operators. Summary of the Invention

[0004] The purpose of this invention is to provide a tertiary dust removal system for a converter steelmaking workshop to improve dust removal efficiency and enhance the working environment within the workshop.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0006] According to one aspect of the present invention, a tertiary dust removal system for a converter steelmaking workshop is provided. The workshop includes a high-level frame and a top-level frame located above the high-level frame. The high-level frame includes a charging bay and a converter bay. The tertiary dust removal system comprises a first dust hood, a second dust hood, a gas vent, a main dust removal pipe, a first dust removal branch pipe, a second dust removal branch pipe, a flux alloy charging system, a charging belt, baffles, and partitions. The first dust hood is located on the roof of the charging bay. The second dust hood and the gas vent are arranged side-by-side on the top of the top-level frame. The longitudinal cross-section of both the first and second dust hoods is tapered, with a smaller upper section and a larger lower section. The main dust removal pipe connects the first dust hood to the outside of the workshop, and the first dust removal branch pipe connects the second dust hood to the outside of the workshop. The dust removal main pipe has a portion located outside the workshop. The second dust removal branch pipe connects the gas tower and the portion of the dust removal main pipe located outside the workshop. The dust removal main pipe is equipped with a fan to accelerate the discharge of smoke and dust from the dust removal main pipe. The flux alloy charging system is located within the high-rise frame and below the second dust hood. The charging belt is located on the belt layer platform of the high-rise frame and above the flux alloy charging system. The charging belt is used to charge the flux alloy charging system. The baffle is located between the charging span and the converter span. The partition is located between the dust hood and the gas tower. The partition connects the belt layer platform of the high-rise frame and the side wall of the second dust hood, and the length of the partition is equal to that of the baffle.

[0007] In some embodiments of this application, the first dust cover is provided in multiple forms and is arranged at intervals along the length extension direction of the baffle.

[0008] In some embodiments of this application, the second dust cover is provided in multiple forms and is arranged at intervals along the length extension direction of the partition.

[0009] In some embodiments of this application, the main dust removal pipe includes a first pipe section, a second pipe section, and a third pipe section. The first pipe section extends laterally and is disposed near the top wall of the high-rise frame. One end of the first pipe section is connected to the first dust removal hood. The second pipe section extends vertically and is disposed near the side wall of the high-rise frame. The upper end of the second pipe section is connected to the other end of the first pipe section. The third pipe section extends laterally, and one end of the third pipe section is connected to the lower end of the second pipe section. The first dust removal branch pipe includes an upper pipe section and a lower pipe section. The upper pipe section extends laterally... The upper pipe section extends and is positioned close to the top wall of the top frame. One end of the upper pipe section is connected to the second dust removal hood. The lower pipe section extends vertically, with its upper end connected to the other end of the upper pipe section. The lower end of the lower pipe section is connected to the end of the first pipe section that is connected to the first dust removal hood. The second dust removal branch pipe extends horizontally, with one end connected to the air louver and the other end connected to the end of the upper pipe section that is connected to the first dust removal hood. The fan is located at the junction of the first pipe section and the lower pipe section.

[0010] In some embodiments of this application, multiple columns are arranged side by side at intervals within the high-rise frame, and two adjacent columns divide an installation area. Multiple converters are provided, and each is correspondingly located in a portion of the installation areas. At least one of the remaining installation areas has a reserved installation position for the converter.

[0011] In some embodiments of this application, the installation area of ​​the converter is designated as a first zone, and the remaining installation areas are designated as a second zone. Two baffles are provided, namely a first baffle and a second baffle. The first baffle connects the crane beam of the feeding span located in the first zone and the second zone to the side wall of the first dust hood. The second baffle is located below the first baffle and connects the platform in the workshop located in the second zone to the crane beam of the feeding span. The length of the partition is equal to that of the first baffle.

[0012] In some embodiments of this application, the first dust removal hood includes a hood body and vertical walls. The hood body includes an upper opening and a lower opening, and the longitudinal cross-section of the hood body is a cone shape with a smaller upper section and a larger lower section. Four vertical walls are provided, and the four vertical walls are connected to the perimeter of the lower opening of the hood body, forming a rectangular frame structure. The dust removal main pipe is connected to the upper opening of the hood body and the outside of the workshop. The first baffle connects the crane beam of the feeding span located in the first area and the second area to the vertical walls of the first dust removal hood.

[0013] In some embodiments of this application, a plurality of vertical bars are arranged side by side at intervals within the top-level frame, and the partition is mounted on the plurality of vertical bars.

[0014] In some embodiments of this application, the height of the first dust hood is 5.5 meters to 7 meters, and the height of the second dust hood is 3 meters.

[0015] In some embodiments of this application, the baffle is a steel plate with a thickness of 4 to 6 mm, and the partition is a color plate with a thickness of 0.6 mm.

[0016] As can be seen from the above technical solutions, the embodiments of the present invention have at least the following advantages and positive effects:

[0017] In the three-stage dust removal system of the converter steelmaking workshop in this embodiment of the invention, the first dust hood is installed on the roof of the charging bay to remove dust from the charging bay area. A baffle is installed between the charging bay and the converter bay, preventing dust from the charging bay area from escaping to the converter bay area, while the dust from the converter bay area gradually rises to the top frame. A partition further divides the top frame into an area with a second dust hood and an area with a ventilation tower. Typically, the area with the second dust hood on the top frame accumulates significantly more dust than the area with the ventilation tower. The partition guides the dust drifting from the top of the upper frame to the top frame, greatly improving dust removal efficiency and significantly improving the operating environment of the workshop. On the other hand, a small amount of escaping dust generated by the charging belt and flux alloy charging system also gradually rises to the dust hood on the top frame and is promptly discharged.

[0018] Furthermore, because the baffles prevent dust from escaping from the charging area to the converter area, and the dust from the converter area can gradually rise and be discharged by the second dust hood and the gas vent, the amount of dust in the top area of ​​the high-rise frame is greatly reduced, thus not affecting the health of personnel working on the conveyor belt platform or in the rest area on the conveyor belt platform. In addition, the longitudinal cross-section of both the first and second dust hoods is a cone shape with a smaller top and a larger bottom, which allows for a large area to be arranged for the first and second dust hoods, while the height is controllable. This greatly reduces the height of the workshop while ensuring dust removal efficiency, thereby reducing the manufacturing cost of the workshop. Attached Figure Description

[0019] Figure 1 This is a side view of a tertiary dust removal system in a converter steelmaking workshop according to an embodiment of the present invention.

[0020] Figure 2 yes Figure 1 The front view in the image.

[0021] The reference numerals in the attached drawings are explained as follows: 100, high-rise frame; 101, conveyor belt platform; 110, charging span; 111, crane beam; 120, converter span; 130, platform; 200, top-level frame; 10, converter; 11, first dust hood; 113, hood body; 112, vertical wall; 12, second dust hood; 13, gas vent; 21, main dust hood; 211, fan; 22, first dust hood branch pipe; 23, second dust hood branch pipe; 31, flux alloy charging system; 32, charging conveyor belt; 4, baffle; 41, first baffle; 42, second baffle; 5, partition; 61, metallurgical casting crane; 62, molten iron ladle; 63, scrap steel trough; 7, column; 71, converter installation position; 8, vertical rod; 9, oxygen lance. Detailed Implementation

[0022] Although the invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the invention and is not intended to limit the invention to what is described herein.

[0023] Therefore, a feature pointed out in this specification is used to illustrate one feature of one embodiment of the invention, and does not imply that every embodiment of the invention must have the described feature. Furthermore, it should be noted that this specification describes many features. While certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0024] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of the invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0025] The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Please see Figure 1 and Figure 2An embodiment of the present invention provides a tertiary dust removal system for a converter steelmaking workshop. The workshop includes a high-level frame 100 and a top-level frame 200 located above the high-level frame 100. The high-level frame 100 includes a charging span 110 and a converter span 120. The tertiary dust removal system comprises a first dust hood 11, a second dust hood 12, a gas vent 13, a main dust removal pipe 21, a first dust removal branch pipe 22, a second dust removal branch pipe 23, a flux alloy charging system 31, a charging belt 32, baffles 4, and partitions 5. The first dust hood 11 is located on the roof of the charging span 110. The second dust hood 12 and the gas vent 13 are arranged side-by-side on the top of the top-level frame 200. The longitudinal cross-sections of both the first dust hood 11 and the second dust hood 12 are conical, with a smaller upper section and a larger lower section. The main dust removal pipe 21 connects the first dust hood 11 to the outside of the workshop, and the first dust removal branch pipe 22 connects to... The second dust hood 12 and the part of the dust removal main pipe 21 located outside the workshop are connected by the second dust removal branch pipe 23, which connects the gas tower 13 and the part of the dust removal main pipe 21 located outside the workshop. The dust removal main pipe 21 is equipped with a fan 211 to accelerate the discharge of smoke and dust from the dust removal main pipe 21. The flux alloy charging system 31 is located inside the high-rise frame 100 and below the second dust hood 12. The charging belt 32 is located on the belt layer platform 101 of the high-rise frame 100 and above the flux alloy charging system 31. The charging belt 32 is used to charge the flux alloy charging system 31. The baffle 4 is located between the charging span 110 and the converter span 120. The partition 5 is located between the dust hood and the gas tower 13. The partition 5 connects the side walls of the belt layer platform 101 of the high-rise frame 100 and the second dust hood 12, and the lengths of the partition 5 and the baffle 4 are equal.

[0027] The first dust hood 11 is installed on the roof of the charging span 110 to remove dust from the charging span 110 area. A baffle 4 is installed between the charging span 110 and the converter span 120, preventing dust from the charging span 110 area from escaping to the converter span 120 area, while the dust from the converter span 120 area gradually rises to the top frame 200. A partition 5 further divides the top frame 200 into an area with a second dust hood 12 and an area with a ventilation tower 13. Typically, the dust accumulation in the area with the second dust hood 12 is much greater than that in the area with the ventilation tower 13. The partition 5 divides the dust drifting from the top of the upper frame 100 to the top frame 200, greatly improving dust removal efficiency and significantly improving the operating environment in the workshop. On the other hand, a small amount of escaping dust generated by the charging belt 32 and the flux alloy charging system 31 also gradually rises to the dust hood of the top frame 200 and is promptly discharged.

[0028] Furthermore, because the baffle 4 prevents the smoke and dust from the charging span 110 area from escaping to the converter span 120 area, and the smoke and dust in the converter span 120 area can gradually rise and be discharged by the second dust hood 12 and the gas tower 13, the amount of smoke and dust in the top area of ​​the high-rise frame 100 is greatly reduced, so as not to affect the health of the personnel working on the belt conveyor platform 101 and the personnel in the rest room on the belt conveyor platform 101.

[0029] Furthermore, the longitudinal cross-sections of the first dust hood 11 and the second dust hood 12 are both tapered, with the top being smaller and the bottom being larger. That is, the angles between the side walls of the first dust hood 11 and the second dust hood 12 and the horizontal plane are both acute. This allows the first dust hood 11 and the second dust hood 12 to be arranged as large as possible in the length and width directions to increase the smoke holding capacity of the dust hoods, while the height can be controlled within a certain range. This greatly reduces the height of the workshop while ensuring the dust removal effect, thereby reducing the manufacturing cost of the workshop.

[0030] In some embodiments, the height of the first dust hood 11 is controlled between 5.5 meters and 7 meters, and the height of the second dust hood 12 is controlled at 3 meters, so as to control the manufacturing cost of the workshop while ensuring the dust removal effect.

[0031] The equal lengths of partition 5 and baffle 4 ensure that partition 5 has a good dividing effect and baffle 4 has a good partitioning effect.

[0032] It should be noted that even with a complete secondary dust removal system, during the iron and scrap steel charging process in Converter 10, considering adverse factors such as splashing, it is inevitable that some fumes will escape and drift to the operating platform 130 and the upper frame 100 area of ​​Converter 10. Since the upper frame 100 is the highest point in the steelmaking workshop, fumes escaping from other smelting and processing stations or dust collection points in the workshop will eventually accumulate at the top of the upper frame 100. Therefore, it is crucial to conduct dust removal at the top of the upper frame 100 and to use baffles 4 to prevent fumes from escaping to the charging span 110 area. Otherwise, it will seriously affect the health of personnel working on the conveyor belt and those in the rest area on the conveyor belt.

[0033] The three-stage dust removal system also includes a metallurgical casting crane 61, which is slidably connected to the crane rail of the charging span 110 and located above the converter 10 furnace. The metallurgical casting crane 61 is used to lift the molten iron ladle 62 and the scrap steel trough 63.

[0034] In some embodiments, a plurality of first dust hoods 11 are provided and arranged at intervals along the length extension direction of the baffle 4. By using a plurality of first dust hoods 11, the dust removal effect on the feeding span 110 area of ​​the high-rise frame 100 is improved.

[0035] In some embodiments, a plurality of second dust hoods 12 are provided and arranged at intervals along the length extension direction of the partition 5, thereby improving the dust removal effect on the flue gas rising from the converter span 120 area of ​​the upper frame 100 to the top frame 200.

[0036] In some embodiments, the dust removal main pipe 21 includes a first pipe section, a second pipe section, and a third pipe section. The first pipe section extends laterally and is disposed near the top wall of the high-rise frame 100. One end of the first pipe section is connected to the first dust removal hood 11. The second pipe section extends vertically and is disposed near the side wall of the high-rise frame 100. The upper end of the second pipe section is connected to the other end of the first pipe section. The third pipe section extends laterally and one end of the third pipe section is connected to the lower end of the second pipe section. This arrangement ensures that the dust removal main pipe 21 is arranged as evenly as possible along the side wall of the high-rise frame 100, facilitating the installation of fasteners on the side wall of the high-rise frame 100 to reinforce the dust removal main pipe 21.

[0037] The first dust removal branch pipe 22 includes an upper pipe section and a lower pipe section. The upper pipe section extends laterally and is located close to the top wall of the top frame 200. One end of the upper pipe section is connected to the second dust removal hood 12. The lower pipe section extends vertically, with its upper end connected to the other end of the upper pipe section and its lower end connected to the end of the first pipe section that is connected to the first dust removal hood 11. This arrangement ensures that the first dust removal branch pipe 22 is also arranged as evenly as possible along the side wall of the top frame 200, and also facilitates the installation of fasteners on the side wall of the top frame 200 to reinforce the main dust removal pipe 21.

[0038] The second dust removal branch pipe 23 extends laterally, with one end connected to the air duct 13 and the other end connected to the end of the upper pipe section that connects to the first dust removal hood 11. The fan 211 is located at the junction of the first and lower pipe sections. Since both the first and second dust removal branch pipes 22 and 23 are connected to the main dust removal pipe 21, only one fan 211 needs to be installed inside the main dust removal pipe 21. The driving force of the fan 211 can be used to simultaneously accelerate the discharge of smoke and dust from the first dust removal hood 11, the second dust removal hood 12, and the air duct 13, thereby improving dust removal efficiency.

[0039] When scrap steel needs to be added to converter 10, metallurgical casting crane 61 lifts the fully loaded scrap steel trough 63 and adds the scrap steel to converter 10. This process will generate a certain amount of smoke and dust. Some of it is drawn away by the dust removal device of the secondary dust removal system, while the escaped smoke and dust rises rapidly to the first dust removal hood 11. Then, through the dust removal main pipe 21, under the negative pressure of the fan 211, the smoke and dust are drawn to the pulse bag dust collector for filtration and purification.

[0040] When the converter 10 needs to add iron, the metallurgical casting crane 61 lifts the fully loaded molten iron ladle 62 and adds the molten iron to the converter 10. This process will generate a large amount of smoke and dust. Most of the smoke and dust is drawn away by the dust removal device of the secondary dust removal system. The escaped smoke and dust rises rapidly to the first dust removal hood 11, and then through the dust removal main pipe 21, under the negative pressure of the fan 211, the smoke and dust are drawn to the pulse bag dust collector for filtration and purification.

[0041] Therefore, the flue gas generated in the later stages of the iron and scrap steel charging process in converter 10 rises rapidly and enters the first dust hood 11 on the roof of the charging span 110. Under the negative pressure of the fan 211 in the dust collection main pipe 21, most of the flue gas is promptly removed. A small portion of the flue gas remains in the dust hood for 30-60 seconds before being removed as well. Furthermore, if splashing occurs during the smelting process in converter 10, most of the explosive flue gas generated will escape from the front of converter 10. The flue gas escaping from the front of converter 10 can also enter the first dust hood 11 on the roof of the charging span 110, and under the negative pressure of the fan 211 in the dust collection main pipe 21, most of the flue gas is promptly removed. It should be noted that since this part of the flue gas is generated in the charging span 110 area, it is all blocked by the baffle 4 within the charging span 110 area and will not escape to the converter span 120 area.

[0042] The converter 10, metallurgical casting crane 61, molten iron ladle 62 and scrap steel trough 63 can each be provided in multiples. Multiple metallurgical casting cranes 61 can operate simultaneously. The metallurgical casting crane 61 lifts the scrap steel trough 63 filled with scrap steel or lifts the molten iron ladle 62 filled with molten iron and adds it to the corresponding converter 10.

[0043] In some embodiments, multiple columns 7 are arranged side-by-side at intervals within the high-rise frame 100, with adjacent columns 7 dividing an installation area. Multiple converters 10 are provided, each corresponding to a portion of the installation area. At least one of the remaining installation areas has a reserved installation position 71 for the converter 10. By reserving installation positions for the converter 10, it is convenient to quickly install the converter 10 when production needs arise.

[0044] In some embodiments, the installation area with converter 10 is designated as the first zone, and the remaining installation areas are designated as the second zone. Two baffles 4 are provided: a first baffle 41 and a second baffle 42. The first baffle 41 connects the crane beam 111 of the charging span 110 located in the first and second zones to the side wall of the first dust hood 11. The second baffle 42 is located below the first baffle 41 and connects the platform 130 in the workshop within the second zone to the crane beam 111 of the charging span 110. The partition 5 has the same length as the first baffle 41. The first baffle 41 and the second baffle 42 effectively seal off the charging span 110 area, preventing dust from escaping from the charging span 110 area to the converter span 120 area.

[0045] In some embodiments, the first dust hood 11 includes a hood body 113 and vertical walls 112. The hood body 113 includes an upper opening and a lower opening, and the longitudinal cross-section of the hood body 113 is a cone shape with a smaller upper section and a larger lower section. Four vertical walls 112 are provided, and the four vertical walls 112 are connected around the lower opening of the hood body 113 to form a rectangular frame structure. The dust removal main pipe 21 connects the upper opening of the hood body 113 to the outside of the workshop. The first baffle 41 connects the crane beam 111 of the feeding span 110 located in the first and second zones and the vertical walls 112 of the first dust hood 11. The vertical walls 112 and the first baffle 41 have a larger connection area, so that the first baffle 41 has a better sealing effect.

[0046] In some embodiments, a plurality of vertical rods 8 are arranged side by side at intervals within the top frame 200, and the partition 5 is stably installed using the plurality of vertical rods 8.

[0047] In some embodiments, the tertiary dust removal system also includes an oxygen lance 9, which is located inside the upper frame 100 and below the dust hood. During the smelting process of the converter 10, if splashing occurs, the explosive dust generated at this time will escape from the rear of the converter 10 and the hole of the oxygen lance 9, and rise layer by layer to the dust hood of the upper frame 200 and be discharged in time.

[0048] In some embodiments, the tertiary dust removal system also includes a smoke and dust detection camera, and the air vent 13 is an adjustable ventilator type air vent 13. The adjustable ventilator type air vent 13 is used in conjunction with the smoke and dust detection camera. When smoke and dust accumulate in the space below the air vent 13, the air vent 13 is closed to become a dust removal ventilator. When no smoke and dust accumulate in the space below the air vent 13, the air vent 13 is used for ventilation.

[0049] In some embodiments, the baffle 4 is a steel plate with a thickness of 4 to 6 mm to ensure the structural strength of the baffle 4. The partition 5 is a color-coated steel plate with a thickness of 0.6 mm to ensure the structural strength of the color-coated steel plate, and the color-coated steel plate has good corrosion resistance.

[0050] Although the invention has been described with reference to several typical embodiments, it should be understood that the terminology used is illustrative and exemplary, and not restrictive. Since the invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A tertiary dust removal system for a converter steelmaking workshop, the workshop comprising a high-level frame and a top-level frame located above the high-level frame, the high-level frame comprising a charging span and a converter span, characterized in that, The three-stage dust removal system includes a first dust hood, a second dust hood, a ventilator, a main dust removal pipe, a first dust removal branch pipe, a second dust removal branch pipe, a flux alloy feeding system, a feeding belt, baffles, and partitions. The first dust hood is located on the roof of the feeding bay. The second dust hood and the ventilator are arranged side-by-side on the top of the top frame. The longitudinal cross-section of both the first and second dust hoods is tapered, with a smaller top and a larger bottom. The main dust removal pipe connects the first dust hood to the outside of the workshop. The first dust removal branch pipe connects the portion of the second dust hood and the main dust removal pipe located outside the workshop. The second dust removal branch pipe connects the portion of the ventilator and the main dust removal pipe located outside the workshop. In the portion outside the workshop, the dust removal main pipe is equipped with a fan to accelerate the discharge of smoke and dust from the dust removal main pipe. The flux alloy feeding system is located within the high-rise frame and below the second dust hood. The feeding belt is located on the belt layer platform of the high-rise frame and above the flux alloy feeding system. The feeding belt is used to feed the flux alloy feeding system. The baffle is located between the feeding span and the converter span. The partition is located between the dust hood and the gas tower. The partition connects the belt layer platform of the high-rise frame and the side wall of the second dust hood, and the length of the partition is equal to that of the baffle.

2. The tertiary dust removal system for a converter steelmaking workshop as described in claim 1, wherein multiple first dust removal hoods are provided and are arranged at intervals along the length extension direction of the baffle.

3. The tertiary dust removal system for a converter steelmaking workshop as described in claim 1, wherein multiple second dust removal hoods are provided and are arranged at intervals along the length extension direction of the partition.

4. The tertiary dust removal system for a converter steelmaking workshop as described in claim 1, wherein the main dust removal pipe comprises a first pipe section, a second pipe section, and a third pipe section; the first pipe section extends laterally and is disposed near the top wall of the high-rise frame, one end of the first pipe section is connected to the first dust removal hood; the second pipe section extends vertically and is disposed near the side wall of the high-rise frame, the upper end of the second pipe section is connected to the other end of the first pipe section; the third pipe section extends laterally, one end of the third pipe section is connected to the lower end of the second pipe section; and the first dust removal branch pipe comprises an upper pipe section and a lower pipe section. The upper pipe section extends laterally and is located near the top wall of the top frame. One end of the upper pipe section is connected to the second dust removal hood. The lower pipe section extends vertically, with its upper end connected to the other end of the upper pipe section and its lower end connected to the end of the first pipe section that is connected to the first dust removal hood. The second dust removal branch pipe extends laterally, with one end connected to the air vent and its other end connected to the end of the upper pipe section that is connected to the first dust removal hood. The fan is located at the junction of the first pipe section and the lower pipe section.

5. The three-stage dust removal system for the converter steelmaking workshop as described in claim 1, wherein multiple columns are arranged side by side at intervals within the high-rise frame, and two adjacent columns divide an installation area, and multiple converters are provided, each corresponding to one of the installation areas, and at least one of the remaining installation areas has a reserved installation position for the converter.

6. The tertiary dust removal system for a converter steelmaking workshop as described in claim 5, characterized in that, The converter installation area is designated as the first zone, and the remaining installation areas are designated as the second zone. Two baffles are provided, namely a first baffle and a second baffle. The first baffle connects the crane beam of the feeding span located in the first zone and the second zone to the side wall of the first dust hood. The second baffle is located below the first baffle and connects the platform in the workshop located in the second zone to the crane beam of the feeding span. The length of the baffle is equal to that of the first baffle.

7. The tertiary dust removal system for a converter steelmaking workshop as described in claim 6, characterized in that, The first dust removal hood includes a hood body and vertical walls. The hood body includes an upper opening and a lower opening, and the longitudinal cross-section of the hood body is a cone shape with a smaller upper section and a larger lower section. There are four vertical walls, which are connected to the four sides of the lower opening of the hood body and enclose a rectangular frame structure. The dust removal main pipe is connected to the upper opening of the hood body and the outside of the workshop. The first baffle connects the crane beam of the feeding span located in the first area and the second area to the vertical walls of the first dust removal hood.

8. The tertiary dust removal system for a converter steelmaking workshop as described in claim 1, characterized in that, Multiple vertical bars are arranged side-by-side at intervals within the top-level frame, and the partition is installed on the multiple vertical bars.

9. The tertiary dust removal system for a converter steelmaking workshop as described in claim 1, characterized in that, The height of the first dust hood is 5.5 meters to 7 meters, and the height of the second dust hood is 3 meters.

10. The tertiary dust removal system for a converter steelmaking workshop as described in claim 1, characterized in that, The baffle is made of steel plate with a thickness of 4 to 6 mm, and the partition is made of color plate with a thickness of 0.6 mm.

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