Dust removal device for alloy fine-tuning station

Abstract

The present invention discloses a dust removal device for an alloy fine-tuning station, which includes a dust removal fan, a main dust removal pipeline for the total dust removal of soot, a main soot dust removal pipeline connected to the ladle hood cover and the main dust removal pipeline for the total dust removal of soot, and a secondary soot dust removal pipeline connected to the ladle hood cover and the main dust removal pipeline for guiding the soot to the main dust removal pipeline during the first dust removal condition, the second dust removal condition, and the third dust removal condition. At least two secondary soot dust removal pipelines are provided, and the main soot dust removal pipeline is located at the center of the ladle hood cover. The dust removal device for the alloy fine-tuning station of the present invention can effectively reduce the soot situation in the workshop caused by adding the modifying agent in the alloy fine-tuning station by setting the soot dust removal pipelines working under different dust removal conditions, effectively reduce the soot in the alloy fine-tuning station, improve the air quality in the workshop, and at the same time, by opening different soot dust removal pipelines, the energy consumption can be saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of metallurgical environmental protection. Specifically, the present invention relates to a dust removal device for an alloy fine-tuning station. Background Art

[0002] At present, after the converter produces a series of steel grades such as ultra-low carbon steel, when the molten steel passes through the alloy fine-tuning station, argon blowing operation is carried out at the bottom of the ladle. When the ladle runs to the alloy fine-tuning station after tapping, the top slag of the molten steel is modified according to the requirements of the steel grade, and a top slag modifier is added. Since the argon gas blown at the bottom of the ladle stirs the molten steel, and furthermore, the top slag modifier reacts with the top slag of the molten steel, the chemical reaction inside the molten steel is intense, resulting in a large amount of dust being easily generated in the alloy fine-tuning station, which is not conducive to environmental protection. If a dust removal fan is directly installed at the top of the argon blowing station, although the dust can be removed, it will cause a significant drop in the temperature of the molten steel, and the dust removal effect is not good, which is not conducive to energy conservation and consumption reduction. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a dust removal device for an alloy fine-tuning station, aiming to effectively reduce the dust in the alloy fine-tuning station and achieve energy conservation and emission reduction.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A dust removal device for an alloy fine-tuning station includes a dust removal fan, a main dust removal pipeline connected to the dust removal fan, a main dust removal pipeline connected to the ladle hood cover and the main dust removal pipeline for guiding dust to the main dust removal pipeline in the first dust removal condition, and a secondary dust removal pipeline connected to the ladle hood cover and the main dust removal pipeline for guiding dust to the main dust removal pipeline in the first dust removal condition, the second dust removal condition and the third dust removal condition. At least two secondary dust removal pipelines are provided, and the main dust removal pipeline is located at the center of the ladle hood cover.

[0005] The flue gas volume in the first dust removal condition is greater than the flue gas volume in the second dust removal condition, and the flue gas volume in the second dust removal condition is greater than the flue gas volume in the third dust removal condition.

[0006] In the first dust removal condition, the main dust removal pipeline and all the secondary dust removal pipelines are in a conducting state.

[0007] In the second dust removal condition, the main dust removal pipeline is in a closed state, and all the secondary dust removal pipelines are in a conducting state.

[0008] In the third dust removal condition, the main dust removal pipeline is in a closed state, and one secondary dust removal pipeline is in a conducting state.

[0009] The diameter of the main dust removal pipeline is greater than the diameter of the secondary dust removal pipeline.

[0010] The main dust removal pipeline and the secondary dust removal pipeline of the flue dust are arranged along the length direction of the total flue dust removal pipeline, and the secondary dust removal pipelines are distributed on the opposite sides of the main dust removal pipeline.

[0011] Two secondary dust removal pipelines are provided, and the main dust removal pipeline is located at the middle position between the two secondary dust removal pipelines.

[0012] The dust removal device for the alloy fine-tuning station of the present invention can effectively reduce the dust situation in the workshop caused by adding the modifying agent in the alloy fine-tuning station by arranging dust removal pipelines that work under different dust removal conditions, effectively reduce the dust in the alloy fine-tuning station, improve the air quality in the workshop. At the same time, by opening different dust removal pipelines, energy consumption can be saved, the effect of energy conservation and emission reduction can be achieved, and the influence on the temperature of the molten steel during dust removal can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] This specification includes the following drawings, and the shown contents are respectively:

[0014] Figure 1 is the front view of the dust removal device for the alloy fine-tuning station of the present invention;

[0015] Figure 2 is the top view of the dust removal device for the alloy fine-tuning station of the present invention;

[0016] The marks in the figure are: 1, installation support; 2, ladle car; 3, ladle; 4, ladle cover lifting device; 5, secondary dust removal pipeline; 6, main dust removal pipeline; 7, total flue dust removal pipeline; 8, ladle hood cover; 9, dust removal fan; 10, dust removal exhaust hole; 11, feeding pipeline interface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further describes in detail the specific embodiments of the present invention with reference to the drawings, aiming to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and contribute to its implementation.

[0018] It should be noted that in the following embodiments, the "first", "second" and "third" do not represent an absolute distinction relationship in terms of structure and / or function, nor do they represent the execution order, but are only for the convenience of description.

[0019] Such as Figure 1 and Figure 2As shown in the figure, the present invention provides a dust removal device for an alloy fine-tuning station, which includes a dust removal fan 9, a main dust removal pipeline 7 connected to the dust removal fan 9, a main dust removal pipeline 6 connected to the ladle hood cover 8 and the main dust removal pipeline 7 and used to guide the dust to the main dust removal pipeline 7 under the first dust removal condition, and a secondary dust removal pipeline 5 connected to the ladle hood cover 8 and the main dust removal pipeline 7 and used to guide the dust to the main dust removal pipeline 7 under the first, second, and third dust removal conditions. There are at least two secondary dust removal pipelines 5, and the main dust removal pipeline 6 is located at the center of the ladle hood cover 8.

[0020] Specifically, as Figure 1 and Figure 2 shown, the ladle car 2 transports the ladle to the alloy fine-tuning station. The ladle car 2 drives to the specified position in the alloy fine-tuning station, and a ladle hood cover 8 is added above the specified position. When the ladle car 2 enters, the ladle hood cover 8 descends to cover the ladle, controlling the overflow of dust. The alloy fine-tuning station opens different dust pipeline openings according to different added modification doses and different amounts of dust, achieving energy conservation and consumption reduction. The main dust removal pipeline 6 and the secondary dust removal pipeline 5 are connected to the ladle hood cover 8, controlling the contact area between the dust pipeline opening and the molten steel, and reducing the heat of the molten steel sucked away by the dust removal fan 9.

[0021] As Figure 1 and Figure 2 shown, the ladle hood cover 8 is a disc-shaped structure. The axis of the ladle hood cover 8 is a vertical line, the ladle hood cover 8 is horizontally arranged, the diameter of the ladle hood cover 8 is larger than the diameter of the ladle mouth of the ladle, and the ladle hood cover 8 and the ladle are in a coaxial state. Two feeding pipeline interfaces 11 are arranged on the ladle hood cover 8. The feeding pipeline interfaces 11 are round holes vertically penetrating through the ladle hood cover 8. The axis of the feeding pipeline interface 11 is parallel to the axis of the ladle hood cover 8, and the feeding pipeline interface 11 is connected to the feeding device. When the alloy fine-tuning station receives the molten steel, the ladle containing the molten steel is transported to the working position by the ladle car 2. The ladle hood cover 8 is lowered to the upper position of the ladle through the ladle cover lifting device. After the ladle hood cover 8 is parked in a suitable position, the top slag modifier can be added into the ladle through the feeding pipeline interface 11. The ladle cover lifting device is used to control the vertical lifting of the ladle hood cover 8. The structure of the ladle cover lifting device is well-known to those skilled in the art and will not be described in detail here.

[0022] At this time, different dust removal pipelines can be opened according to the size of the dust:

[0023] 1) If it is slight dust, only one secondary dust removal pipeline 5 can be opened for slight dust removal through one secondary dust removal pipeline 5;

[0024] 2) If the smoke is moderate, the two auxiliary smoke removal pipes 5 on the left and right can be opened to perform moderate dust removal through the two auxiliary smoke removal pipes 5 on the left and right;

[0025] 3) If the smoke is serious, the two auxiliary smoke removal pipes 5 on the left and right and the main smoke removal pipe 6 in the middle can be opened for dust removal. However, since the main smoke removal pipe 6 is located in the middle of the ladle, if it is opened, it may take away part of the molten steel temperature, so it is not recommended to open it frequently. It can be opened appropriately according to the situation.

[0026] By opening different smoke and dust removal pipes, the corresponding energy consumption can be saved and the goal of energy conservation and emission reduction can be achieved.

[0027] All smoke and dust sucked through the dust removal pipeline will be collected into the smoke and dust removal main pipeline 7, and after being processed by the dust removal fan 9, it will be discharged from the dust removal exhaust hole 10.

[0028] like Figure 1 and Figure 2 As shown, the main smoke dust removal pipeline 7 is horizontally arranged, and the main smoke dust removal pipeline 7 is located above the ladle fume hood cover 8. The main smoke dust removal pipeline 7 is arranged on the mounting support 1, and the mounting support 1 is vertically arranged, and the mounting support 1 provides support for the main smoke dust removal pipeline 7. The main smoke dust removal pipeline 6 and the auxiliary smoke dust removal pipeline 5 are vertically arranged, and the main smoke dust removal pipeline 6 and the auxiliary smoke dust removal pipeline 5 extend toward the bottom of the main smoke dust removal pipeline 7. The upper end of the main smoke dust removal pipeline 6 is connected to the main smoke dust removal pipeline 7, and the lower end of the main smoke dust removal pipeline 6 is connected to the ladle fume hood cover 8. The upper end of the auxiliary smoke dust removal pipeline 5 is connected to the main smoke dust removal pipeline 7, and the lower end of the auxiliary smoke dust removal pipeline 5 is connected to the ladle fume hood cover 8. The main smoke dust removal pipeline 6 and the auxiliary smoke dust removal pipeline 5 are arranged along the length direction of the main smoke dust removal pipeline 7, and the auxiliary smoke dust removal pipeline 5 is distributed on opposite sides of the main smoke dust removal pipeline 6. The diameter of the main smoke dust removal duct 6 is larger than the diameter of the auxiliary smoke dust removal duct 5. The main smoke dust removal duct 6 is coaxially arranged with the ladle fume hood cover 8. The lower end of the main smoke dust removal duct 6 is connected to the ladle fume hood cover 8 at the center of the ladle fume hood cover 8. The ladle fume hood cover 8 is provided with a guide hole connected to the main smoke dust removal duct 6 and the auxiliary smoke dust removal duct 5. The guide hole is a circular hole provided at the inner center of the ladle fume hood cover 8, and the guide hole forms an opening on the bottom surface of the ladle fume hood cover 8 for the smoke below to pass through. When the main smoke dust removal duct 6 is in the conducting state, the main smoke dust removal duct 6 inhales smoke through the guide hole; when the auxiliary smoke dust removal duct 5 is in the conducting state, the auxiliary smoke dust removal duct 5 inhales smoke through the guide hole. The main smoke dust removal duct 6 is provided with a first valve for controlling the opening and closing of the main smoke dust removal duct 6 , and the auxiliary smoke dust removal duct 5 is provided with a second valve for controlling the opening and closing of the auxiliary smoke dust removal duct 5 .

[0029] The flue gas volume in the first dust removal condition is greater than that in the second dust removal condition, and the flue gas volume in the second dust removal condition is greater than that in the third dust removal condition. In the first dust removal condition, the dust removal fan 9 operates, and the main dust removal pipeline 6 and all the secondary dust removal pipelines 5 are in a conductive state. At this time, the flue gas volume is the largest. It is necessary to open the first valve on the main dust removal pipeline 6 and at the same time open the second valves on all the secondary dust removal pipelines 5, so that the main dust removal pipeline 6 and all the secondary dust removal pipelines 5 can suck in dust through the diversion holes and guide the dust to the total dust removal pipeline 7, and finally discharge it through the dust removal exhaust hole 10 of the dust removal fan 9.

[0030] In the second dust removal condition, the main dust removal pipeline 6 is in a closed state, and all the secondary dust removal pipelines 5 are in a conductive state. At this time, the flue gas volume is at a medium level. It is necessary to close the first valve on the main dust removal pipeline 6 and open the second valves on all the secondary dust removal pipelines 5, so that all the secondary dust removal pipelines 5 can suck in dust through the diversion holes and guide the dust to the total dust removal pipeline 7, and finally discharge it through the dust removal exhaust hole 10 of the dust removal fan 9.

[0031] In the third dust removal condition, the main dust removal pipeline 6 is in a closed state, and one secondary dust removal pipeline 5 is in a conductive state. At this time, the flue gas volume is at a slight level. It is necessary to close the first valve on the main dust removal pipeline 6, open the second valve on one of the secondary dust removal pipelines 5, and close the second valves on the remaining secondary dust removal pipelines 5, so that one secondary dust removal pipeline 5 can suck in dust through the diversion holes and guide the dust to the total dust removal pipeline 7, and finally discharge it through the dust removal exhaust hole 10 of the dust removal fan 9.

[0032] As Figure 1 and Figure 2 shown, in this embodiment, two secondary dust removal pipelines 5 are provided, the main dust removal pipeline 6 is located in the middle of the two secondary dust removal pipelines 5, and the ladle hood cover 8 is located between the two secondary dust removal pipelines 5.

[0033] After the dust of this heat is processed, the ladle hood cover 8 is lifted by the ladle cover lifting device, and then the ladle car 2 is driven out of the working position. Wait for the next heat to drive into the working position.

[0034] The dust removal device of the alloy fine-tuning station with the above structure can effectively reduce the dust in the alloy fine-tuning station, greatly reduce the overflowing dust, improve the air quality in the workshop, and at the same time can open different dust removal pipelines according to the size of the dust, and effectively reduce the influence of the dust removal fan 9 on the temperature of the molten steel during the dust removal process.

[0035] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above concept and technical solution of the present invention are directly applied to other occasions, they are all within the protection scope of the present invention.

Claims

1. Dust removal device for alloy fine-tuning station, characterized in that: It includes a dust removal fan, a main dust removal pipeline connected to the dust removal fan, a main dust removal pipeline for the main dust which is connected to the ladle hood cover and the main dust removal pipeline and is used to guide the dust to the main dust removal pipeline under the first dust removal condition, and an auxiliary dust removal pipeline for the auxiliary dust which is connected to the ladle hood cover and the main dust removal pipeline and is used to guide the dust to the main dust removal pipeline under the first dust removal condition, the second dust removal condition and the third dust removal condition. There are at least two auxiliary dust removal pipelines, and the main dust removal pipeline is located at the center of the ladle hood cover; The main dust removal pipeline and the auxiliary dust removal pipelines are vertically arranged, and the main dust removal pipeline and the auxiliary dust removal pipelines extend downward towards the main dust removal pipeline. The upper end of the main dust removal pipeline is connected to the main dust removal pipeline, the lower end of the main dust removal pipeline is connected to the ladle hood cover, the upper end of the auxiliary dust removal pipeline is connected to the main dust removal pipeline, and the lower end of the auxiliary dust removal pipeline is connected to the ladle hood cover; The main dust removal pipeline and the auxiliary dust removal pipelines are arranged along the length direction of the main dust removal pipeline, and the auxiliary dust removal pipelines are distributed on the opposite sides of the main dust removal pipeline; the diameter of the main dust removal pipeline is larger than that of the auxiliary dust removal pipelines, the main dust removal pipeline and the ladle hood cover are coaxially arranged, the main dust removal pipeline is in the middle position of the ladle, and the lower end of the main dust removal pipeline is connected to the ladle hood cover at the center of the ladle hood cover; a diversion hole communicating with the main dust removal pipeline and the auxiliary dust removal pipelines is arranged inside the ladle hood cover. The diversion hole is a round hole arranged at the center inside the ladle hood cover, and the diversion hole forms an opening on the bottom surface of the ladle hood cover for the dust below to pass through; When the main dust removal pipeline is in the conducting state, the main dust removal pipeline sucks in the dust through the diversion hole; when the auxiliary dust removal pipeline is in the conducting state, the auxiliary dust removal pipeline sucks in the dust through the diversion hole; a first valve for controlling the opening and closing of the main dust removal pipeline is arranged on the main dust removal pipeline, and a second valve for controlling the opening and closing of the auxiliary dust removal pipeline is arranged on the auxiliary dust removal pipeline; The flue gas volume under the first dust removal condition is larger than that under the second dust removal condition, and the flue gas volume under the second dust removal condition is larger than that under the third dust removal condition; under the first dust removal condition, the dust removal fan operates, and the main dust removal pipeline and all the auxiliary dust removal pipelines are in the conducting state. At this time, the flue gas volume is the largest. It is necessary to open the first valve on the main dust removal pipeline and at the same time open the second valves on all the auxiliary dust removal pipelines, so that the main dust removal pipeline and all the auxiliary dust removal pipelines can suck in the dust through the diversion hole and guide the dust to the main dust removal pipeline, and finally discharge it through the dust removal exhaust hole of the dust removal fan; Under the second dust removal condition, the main dust removal pipeline is in the closed state, and all the auxiliary dust removal pipelines are in the conducting state. At this time, the flue gas volume is at a medium level. It is necessary to close the first valve on the main dust removal pipeline and open the second valves on all the auxiliary dust removal pipelines, so that all the auxiliary dust removal pipelines can suck in the dust through the diversion hole and guide the dust to the main dust removal pipeline, and finally discharge it through the dust removal exhaust hole of the dust removal fan; In the third dust removal condition, the main dust removal pipeline for flue gas is in a closed state, and one of the auxiliary dust removal pipelines for flue gas is in a conducting state. At this time, the flue gas volume is at a slight level. It is necessary to close the first valve on the main dust removal pipeline for flue gas, open the second valve on one of the auxiliary dust removal pipelines for flue gas, and close the second valves on the remaining auxiliary dust removal pipelines for flue gas, so that one auxiliary dust removal pipeline for flue gas can suck in dust through the diversion holes and guide the dust into the main dust removal pipeline for flue gas. Finally, it is discharged through the dust removal exhaust hole of the dust removal fan.

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