Desulfurization device for blast furnace hot blast stove

Abstract

The utility model relates to the technical field of industrial smelting, and discloses a blast furnace hot blast stove desulfurization device which comprises a mounting plate, a hollow shell is fixedly connected to the left side of the top of the mounting plate, an air inlet is formed in the bottom of the mounting plate, and an induced draft fan is fixedly connected to the bottom of the inner wall of the hollow shell. A second filter plate is fixedly connected to the lower middle side of the inner wall of the hollow shell, a rotary filter plate is rotatably connected to the middle of the inner wall of the hollow shell, a first filter plate is fixedly connected to the top of the inner wall of the hollow shell, the top of the hollow shell communicates with an exhaust pipe, and a second rotating column is rotatably connected to the inner wall of the rotary filter plate. According to the utility model, the induced draft fan is started to blow sulfur-containing gas into the first filter plate and the rotary filter plate after the sulfur-containing gas is primarily filtered by the second filter plate, so that environmental damage caused by excessive emission of sulfur dioxide is avoided, and economic loss caused by corrosion of sulfur to equipment is avoided at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial smelting, in particular to a blast furnace hot blast stove desulfurization device. Background Art

[0002] A blast furnace is a device used to produce molten iron. It extracts iron by smelting iron ore with coke and limestone at high temperatures. During this process, materials need to be continuously added and slag removed. The hot blast furnace is used to preheat the air entering the blast furnace. It heats the air to a high temperature and then sends it into the blast furnace. Its function is to improve thermal efficiency and molten iron quality. When the hot blast furnace heats the air, sulfur is contained in the combustion materials used for heating, which also causes the air to contain sulfur. Therefore, sulfides need to be removed to prevent sulfur from corroding the equipment and blast furnace.

[0003] The blast furnace hot blast stove desulfurization device is designed to remove sulfides from fuel gas. It is divided into wet desulfurization and dry desulfurization. Wet desulfurization uses a spray device containing an alkaline solution to absorb sulfides, forming sulfates and sulfites, and removes sulfides through chemical reactions. Dry desulfurization is to achieve the purpose of desulfurization by reacting dry adsorbents with sulfides to form solid by-products. These devices can effectively reduce the sulfur dioxide concentration in hot blast stove emissions and improve overall production efficiency and environmental protection standards.

[0004] The existing dry blast furnace hot blast stove desulfurization device can achieve the purpose of desulfurization by directly reacting the flue gas through the reactor and directly achieving chemical and physical reactions with the desulfurizer filled in the reactor. However, it cannot cope well with the situation where the sulfur content in the flue gas is large, resulting in excessive sulfur dioxide content, causing damage to the environment, corrosion of equipment, and economic losses. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a blast furnace hot blast stove desulfurization device, which aims to improve the problem that the existing dry blast furnace hot blast stove desulfurization device in the prior art cannot cope well with the situation where the sulfur content in the flue gas is large, causing damage to the environment.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a blast furnace hot blast stove desulfurization device, comprising a mounting plate, a hollow shell is fixedly connected to the left side of the top of the mounting plate, an air inlet is opened at the bottom of the mounting plate, an induced draft fan is fixedly connected to the bottom of the inner wall of the hollow shell, a second filter plate is fixedly connected to the middle and lower side of the inner wall of the hollow shell, a rotating filter plate is rotatably connected to the middle part of the inner wall of the hollow shell, a first filter plate is fixedly connected to the top of the inner wall of the hollow shell, an exhaust pipe is connected to the top of the hollow shell, the inner wall of the rotating filter plate is rotatably connected to the second rotating column, and the inner wall of the second rotating column is rotatably connected to the rotating column. The gear train is connected to the gear unit of the driving mechanism, and the gear train is connected to the gear box of the driving mechanism, and the gear train is connected to the gear box of the driving mechanism.

[0007] As a further description of the above technical solution:

[0008] The material changing device includes a waste box, the bottom of the waste box is fixedly connected to the top of the mounting plate, the top of the waste box is fixedly connected to a filling box, the left side of the waste box is connected to a waste pipe, the left side of the filling box is connected to a feed pipe, a baffle is fixedly connected to the top of the rotating filter plate near the edge, a discharge port is provided on the inner wall of the rotating filter plate, a fixed block is fixedly connected to the top right side of the second filter plate, a waste trough is provided on the inner wall of the fixed block, and the inner wall of the waste pipe is connected to the inner wall of the waste trough.

[0009] As a further description of the above technical solution:

[0010] A sliding groove is provided in the middle of the outer wall of the mounting plate, and a handle is slidably connected to the inner wall of the sliding groove.

[0011] As a further description of the above technical solution:

[0012] The top of the injection box is threadedly connected with a dustproof, and the top of the injection box is fixedly connected with a ladder near the edge.

[0013] As a further description of the above technical solution:

[0014] The top of the mounting plate is fixedly connected with a plurality of screws near the edge, and the bottom of the second stirring rod is in contact with the top of the rotating filter plate.

[0015] As a further description of the above technical solution:

[0016] A detector is fixedly connected to the outer wall of the exhaust pipe, and a calcium-based desulfurizing agent is filled between the first filter plate and the rotating filter plate.

[0017] As a further description of the above technical solution:

[0018] A nameplate is fixedly connected to the right outer wall of the mounting plate, and a gear box is rotatably connected to the middle portion of the outer wall of the rotating column 2.

[0019] As a further description of the above technical solution:

[0020] A controller is fixedly connected to the lower middle side of the outer wall of the mounting plate, and the controller is electrically connected to the induced draft fan and the asynchronous motor respectively.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the induced draft fan is started to blow the sulfur-containing gas into the first filter plate and the rotating filter plate after preliminary filtration by the second filter plate, and then the asynchronous motor is started to drive the second bevel gear to rotate and then drive the third bevel gear and the first bevel gear to rotate, so that the first stirring rod and the second stirring rod rotate in opposite directions, thereby achieving the purpose of accelerating the desulfurization efficiency through stirring, avoiding environmental damage caused by excessive sulfur dioxide emissions, and avoiding economic losses caused by sulfur corrosion to equipment.

[0023] 2. In the utility model, the discharge port is aligned with the waste trough by rotating the rotary filter plate, and at the same time the baffle blocks the feed pipe, and the asynchronous motor is started to drive the second stirring rod to rotate to sweep the logistics into the waste trough and flow into the waste box through the waste pipe. The rotary filter plate is then rotated to allow the feed pipe to leak out and fill in new logistics, thereby achieving the purpose of fast and contactless replacement of the desulfurizer, improving the desulfurization efficiency, reducing the possibility of safety accidents, and enhancing safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front perspective view of a blast furnace hot blast stove desulfurization device proposed by the utility model;

[0025] Figure 2 This is a bottom view of a blast furnace hot blast stove desulfurization device proposed by the utility model;

[0026] Figure 3 This is a top view of a blast furnace hot blast stove desulfurization device proposed by the utility model;

[0027] Figure 4 This is a cross-sectional view of a blast furnace hot blast stove desulfurization device proposed by the utility model;

[0028] Figure 5 This is a partial structural schematic diagram of a blast furnace hot blast stove desulfurization device proposed by the utility model.

[0029] Legend:

[0030] 1. Mounting plate; 2. Material changing device; 201. Waste box; 202. Injection box; 203. Discharge port; 204. Baffle; 205. Feed pipe; 206. Waste pipe; 207. Waste chute; 208. Fixed block; 3. Hollow shell; 4. Exhaust pipe; 5. Induced draft fan; 6. Air inlet; 7. Asynchronous motor; 8. First filter plate; 9. Rotating filter plate; 10. Second filter plate; 11. Gear box; 12. First bevel gear; 13. First stirring rod; 14. Rotating column 1; 15. Drive shaft; 16. Second stirring rod; 17. Second bevel gear; 18. Third bevel gear; 19. Rotating column 2; 20. Slide; 21. Handle; 22. Controller; 23. Nameplate; 24. Screw; 25. Ladder; 26. Detector; 27. Dust plug. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Please see the attached Figure 1 - Attachment Figure 3The utility model provides an embodiment of a blast furnace hot blast stove desulfurization device, comprising a mounting plate 1, a hollow shell 3 is fixedly connected to the left side of the top of the mounting plate 1, an air inlet 6 is opened at the bottom of the mounting plate 1, an induced draft fan 5 is fixedly connected to the bottom of the inner wall of the hollow shell 3, a second filter plate 10 is fixedly connected to the middle and lower side of the inner wall of the hollow shell 3, a rotating filter plate 9 is rotatably connected to the middle part of the inner wall of the hollow shell 3, a first filter plate 8 is fixedly connected to the top of the inner wall of the hollow shell 3, an exhaust pipe 4 is connected to the top of the hollow shell 3, the inner wall of the rotating filter plate 9 is rotatably connected to a rotating column 2 19, the inner wall of the rotating column 2 19 is rotatably connected to a rotating column 14, and the outer wall of the rotating column 2 19 is fixedly connected to a third bevel gear 18. A second stirring rod 16 is fixedly connected to the middle and lower side of the outer wall of the rotating column 2 19, a first bevel gear 12 is fixedly connected to the outer wall of the rotating column 14, a first stirring rod 13 is fixedly connected to the middle and upper side of the outer wall of the rotating column 14, an asynchronous motor 7 is fixedly connected to the outer wall of the hollow shell 3, a transmission shaft 15 is fixedly connected to the output end of the asynchronous motor 7, a second bevel gear 17 is fixedly connected to the right end of the transmission shaft 15, the outer walls of the first bevel gear 12 and the third bevel gear 18 are meshed with the outer wall of the second bevel gear 17, a material changing device 2 is fixedly connected to the top right side of the mounting plate 1, the material changing device 2 is used to replace the filtering material, a chute 20 is opened in the middle of the outer wall of the mounting plate 1, and a handle 21 is slidably connected to the inner wall of the chute 20;

[0033] Specifically, the inner wall of the chute 20 is slidably connected to a handle 21, which facilitates the operator to rotate the filter plate 9. An air inlet 6 is provided at the bottom of the mounting plate 1 to facilitate the entry of gas. The exhaust pipe 4 is used to discharge the filtered and desulfurized gas. The transmission shaft 15 has a second bevel gear 17 fixedly connected to its right end. The outer walls of the first bevel gear 12 and the third bevel gear 18 are meshed with the outer wall of the second bevel gear 17 to ensure smooth transmission. The asynchronous motor 7 is used to provide power. Calcium-based desulfurizer is filled between the first filter plate 8 and the rotating filter plate 9. The second filter plate 10 can perform preliminary filtration of the flue gas and dust to extend the service life of the desulfurizer.

[0034] Please see the attached Figure 3 - Attachment Figure 5, the material changing device 2 includes a waste box 201, the bottom of the waste box 201 is fixedly connected to the top of the mounting plate 1, the top of the waste box 201 is fixedly connected to a filling box 202, the left side of the waste box 201 is connected to a waste pipe 206, the left side of the filling box 202 is connected to a feed pipe 205, the top of the rotating filter plate 9 is fixedly connected to a baffle 204 near the edge, the inner wall of the rotating filter plate 9 is provided with a discharge port 203, the top right side of the second filter plate 10 is fixedly connected to a fixed block 208, the inner wall of the fixed block 208 is provided with a waste trough 207, the inner wall of the waste pipe 206 is connected to the inner wall of the waste trough 207, the top of the filling box 202 is threadedly connected to a dustproof 27, and the top of the filling box 202 is fixedly connected to a ladder 25 near the edge;

[0035] Specifically, the dust cover 27 ensures the cleanliness of the inside of the filling box 202. The ladder 25 is designed to facilitate the operator to safely climb to the top of the filling box 202 to add materials and inspect. The baffle 204 can block the feed pipe 205 when discharging waste. The waste box 201 is filled with water to separate the products after the desulfurizer reaction. The feed pipe 205 is used to transport the material to between the rotating filter plate 9 and the first filter plate 8.

[0036] Please see the attached Figure 2 - Attachment Figure 4 , a detector 26 is fixedly connected to the outer wall of the exhaust pipe 4, a calcium-based desulfurizer is filled between the first filter plate 8 and the rotary filter plate 9, a plurality of screws 24 are fixedly connected to the top of the mounting plate 1 near the edge, the bottom of the second stirring rod 16 is in contact with the top of the rotary filter plate 9, a controller 22 is fixedly connected to the middle and lower side of the outer wall of the mounting plate 1, and the controller 22 is electrically connected to the induced draft fan 5 and the asynchronous motor 7 respectively. A nameplate 23 is fixedly connected to the right outer wall of the mounting plate 1, and a gear box 11 is rotatably connected to the middle of the outer wall of the rotating column 2 19;

[0037] Specifically, the detector 26 can detect whether the sulfur content in the gas discharged from the exhaust pipe 4 exceeds the standard and whether the equipment is operating normally for desulfurization. The gearbox 11 can protect the internal components. The nameplate 23 is marked with the model of the equipment to facilitate user identification and maintenance. The model of the asynchronous motor 7 is YE2-160L-4, and the model of the induced draft fan 5 is Y8-39D.

[0038] Working principle: When desulfurization is required, the induced draft fan 5 is started first and then the asynchronous motor 7 is started. The induced draft fan 5 blows the sulfur-containing gas at the bottom into the space between the second filter plate 10 and the rotary filter plate 9 for dust removal and preliminary filtration, and then enters the space between the first filter plate 8 and the rotary filter plate 9. At the same time, the rotation of the asynchronous motor 7 drives the transmission shaft 15 to rotate, thereby enabling the second bevel gear 17 to rotate, driving the third bevel gear 18 and the first bevel gear 12 on the upper and lower sides to rotate, and then driving the second rotating column 19 and the first rotating column 14 to rotate, and finally driving the first stirring rod 13 and the second stirring rod 16 to rotate in the opposite direction, stirring the desulfurizer filled between the first filter plate 8 and the rotary filter plate 9 to accelerate the reaction rate, and then the gas is discharged from the exhaust pipe 4, and its sulfur content is tested by the detector 26 to determine whether it is qualified;

[0039] When the desulfurizer between the first filter plate 8 and the rotary filter plate 9 needs to be replaced after long-term use, pull the handle 21 to make it slide in the slide 20, and at the same time start the asynchronous motor 7 so that the second stirring rod 16 fits the rotary filter plate 9 for stirring. The handle 21 drives the rotary filter plate 9 to rotate together so that the discharge port 203 is aligned with the waste trough 207, the baffle 204 blocks the feed pipe 205, and the waste desulfurizer is swept into the waste trough 207 through the second stirring rod 16 and then enters the waste box 201 through the waste pipe 206. After it is discharged, the rotary filter plate 9 is rotated in the opposite direction again so that the feed pipe 205 is opened, and the discharge port 203 is blocked by the fixed block 208, so that the material in the injection box 202 flows into the first filter plate 8 and the rotary filter plate 9 for replacement.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blast furnace hot blast stove desulfurization device, comprising a mounting plate (1), characterized in that: The left side of the top of the mounting plate (1) is fixedly connected to a hollow housing (3), the bottom of the mounting plate (1) is provided with an air inlet (6), the bottom of the inner wall of the hollow housing (3) is fixedly connected to an induced draft fan (5), the middle and lower side of the inner wall of the hollow housing (3) is fixedly connected to a second filter plate (10), the middle of the inner wall of the hollow housing (3) is rotatably connected to a rotating filter plate (9), the top of the inner wall of the hollow housing (3) is fixedly connected to a first filter plate (8), the top of the hollow housing (3) is connected to an exhaust pipe (4), the inner wall of the rotating filter plate (9) is rotatably connected to a second rotating column (19), the inner wall of the second rotating column (19) is rotatably connected to a first rotating column (14), and the outer wall of the second rotating column (19) is fixedly connected to a third bevel gear (1 8), a second stirring rod (16) is fixedly connected to the lower middle side of the outer wall of the second rotating column (19), a first bevel gear (12) is fixedly connected to the outer wall of the first rotating column (14), a first stirring rod (13) is fixedly connected to the upper middle side of the outer wall of the first rotating column (14), an asynchronous motor (7) is fixedly connected to the outer wall of the hollow housing (3), an output end of the asynchronous motor (7) is fixedly connected to a transmission shaft (15), a right end of the transmission shaft (15) is fixedly connected to a second bevel gear (17), the outer walls of the first bevel gear (12) and the third bevel gear (18) are meshed with the outer wall of the second bevel gear (17), and a material changing device (2) is fixedly connected to the right side of the top of the mounting plate (1), and the material changing device (2) is used to replace the filtering material.

2. A blast furnace hot blast stove desulfurization device according to claim 1, characterized in that: The material changing device (2) comprises a waste box (201), the bottom of the waste box (201) is fixedly connected to the top of the mounting plate (1), the top of the waste box (201) is fixedly connected to a material injection box (202), the left side of the waste box (201) is connected to a waste pipe (206), the left side of the material injection box (202) is connected to a material feed pipe (205), the top of the rotating filter plate (9) is fixedly connected to a baffle (204) near the edge, the inner wall of the rotating filter plate (9) is provided with a discharge port (203), the top right side of the second filter plate (10) is fixedly connected to a fixed block (208), the inner wall of the fixed block (208) is provided with a waste trough (207), and the inner wall of the waste pipe (206) is connected to the inner wall of the waste trough (207).

3. A blast furnace hot blast stove desulfurization device according to claim 1, characterized in that: A sliding groove (20) is provided in the middle of the outer wall of the mounting plate (1), and a handle (21) is slidably connected to the inner wall of the sliding groove (20).

4. A blast furnace hot blast stove desulfurization device according to claim 2, characterized in that: The top of the injection box (202) is threadedly connected to a dustproof (27), and the top of the injection box (202) is fixedly connected to a ladder (25) near the edge.

5. The blast furnace hot blast stove desulfurization device according to claim 1, characterized in that: The top of the mounting plate (1) is fixedly connected with a plurality of screws (24) near the edge, and the bottom of the second stirring rod (16) is in contact with the top of the rotating filter plate (9).

6. A blast furnace hot blast stove desulfurization device according to claim 1, characterized in that: A detector (26) is fixedly connected to the outer wall of the exhaust pipe (4), and a calcium-based desulfurizing agent is filled between the first filter plate (8) and the rotating filter plate (9).

7. The blast furnace hot blast stove desulfurization device according to claim 1, characterized in that: A nameplate (23) is fixedly connected to the right outer wall of the mounting plate (1), and a gear box (11) is rotatably connected to the middle portion of the outer wall of the second rotating column (19).

8. The blast furnace hot blast stove desulfurization device according to claim 1, characterized in that: A controller (22) is fixedly connected to the lower middle side of the outer wall of the mounting plate (1), and the controller (22) is electrically connected to the induced draft fan (5) and the asynchronous motor (7), respectively.

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