Device for efficiently utilizing tail gas energy of submerged arc furnace

Abstract

The utility model relates to the technical field of energy utilization, and discloses a submerged arc furnace tail gas energy efficient utilization device which comprises a waste heat boiler, supporting blocks are evenly and fixedly connected to the periphery of the inner bottom of the waste heat boiler, an inner boiler is fixedly connected to the upper portions of the supporting blocks, and a water inlet pipe is fixedly connected to the upper portion of the inner boiler. A first supporting plate is fixedly connected to the lower portion of the left side of the waste heat boiler, a filter box is fixedly connected to the upper portion of the first supporting plate, an air inlet pipe is fixedly connected to the left side of the filter box, an air guide pipe is fixedly connected to the right side of the air inlet pipe, and a tar adsorption plate is fixedly connected to the left side in the filter box. A plurality of mounting grooves are formed in the upper portion of the filter box, mounting blocks are slidably connected into the mounting grooves, and filter screens are fixedly connected to the lower portions of the mounting blocks. According to the submerged arc furnace tail gas energy utilization device, through cooperation of the filter screen, the waste heat boiler, the draught fan and other structures, efficient utilization of submerged arc furnace tail gas energy can be achieved through the energy utilization device, and the energy utilization rate is increased.

Description

Technical Field

[0001] This utility model relates to the field of energy utilization technology, and in particular to a device for high-efficiency utilization of tail gas energy from a submerged arc furnace. Background Technology

[0002] Submerged arc furnaces are one of the important pieces of equipment in the metallurgical industry, used for smelting metal ores. During the process, a large amount of exhaust gas is generated, which contains harmful substances such as tar, dust, and sulfur dioxide. If this exhaust gas is discharged directly without treatment, it will cause serious environmental pollution. Therefore, the efficient treatment and utilization of submerged arc furnace exhaust gas is an important task facing the metallurgical industry and the environmental protection field. Traditional exhaust gas treatment technologies mostly use methods such as filtration, adsorption, and washing, but these methods often have certain shortcomings in terms of energy efficiency. In addition, the utilization efficiency of waste heat boilers is also affected by tar and dust in the exhaust gas. These pollutants can clog heat exchange equipment and affect heat exchange efficiency. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a device for high-efficiency utilization of tail gas energy from a submerged arc furnace, aiming to improve the problem of generally low utilization rates in existing energy utilization devices.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a high-efficiency energy utilization device for tail gas from a submerged arc furnace, comprising a waste heat boiler, wherein support blocks are uniformly fixedly connected around the bottom perimeter of the waste heat boiler, an inner boiler is fixedly connected to the upper part of the support blocks, a water inlet pipe is fixedly connected to the upper part of the inner boiler, a support plate is fixedly connected to the lower left side of the waste heat boiler, a filter box is fixedly connected to the upper part of the support plate, an air inlet pipe is fixedly connected to the left side of the filter box, a guide pipe is fixedly connected to the right side of the air inlet pipe, a tar adsorption plate is fixedly connected to the left side inside the filter box, several mounting slots are provided on the upper part of the filter box, mounting blocks are slidably connected inside the mounting slots, a filter screen is fixedly connected to the lower part of the mounting blocks, a cleaning component is provided on the upper part of the waste heat boiler for cleaning the filter screen, and a gas conveying component is provided on the left side of the waste heat boiler for conveying the tail gas.

[0005] As a further description of the above technical solution:

[0006] The cleaning component includes a double-sided brush plate, which is uniformly and fixedly connected to the upper part of the waste heat boiler. An installation column is fixedly connected to the upper part of the mounting block, and connecting columns are fixedly connected to both the front and rear sides of the installation column.

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

[0008] The gas transmission assembly includes a second support plate, which is fixedly connected to the lower right side of the waste heat boiler. A fan is fixedly connected to the upper part of the second support plate. An air intake pipe is fixedly connected to the input end of the fan, and a gas transmission pipe is fixedly connected to the output end of the fan. A temperature sensor is fixedly connected to the right side of the inner wall of the waste heat boiler.

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

[0010] Connecting blocks are evenly fixedly connected around the lower outer side of the waste heat boiler, and supporting columns are fixedly connected to the lower part of the connecting blocks.

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

[0012] A drain pipe is fixedly connected to the lower part of the waste heat boiler, and a valve is fixedly connected to the front side of the drain pipe.

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

[0014] The end of the air inlet pipe furthest from the filter box is connected to the exhaust pipe of the sealed submerged arc furnace, and the end of the air guide pipe furthest from the filter box is slidably connected to the waste heat boiler.

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

[0016] The filter screen is slidably connected inside the mounting groove, and the double-sided brush plate is located on the upper left and right sides of the mounting block.

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

[0018] Another temperature sensor is fixedly connected inside the inner boiler. The end of the air intake pipe away from the fan is fixedly connected to the waste heat boiler. The end of the gas delivery pipe away from the fan is connected to the gas pipeline.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this utility model, tar in the exhaust gas is filtered by a tar adsorption plate, and dust in the exhaust gas is filtered in stages by a filter screen. Then, the exhaust gas is input into the waste heat boiler through a gas guide pipe. Heat exchange occurs between the exhaust gas and the inner boiler. The fan is started to draw air from inside the waste heat boiler into the fan. Finally, the exhaust gas is input into the gas pipeline through a gas transmission pipe. This enables the energy utilization device to efficiently utilize the energy of the exhaust gas from the electric arc furnace, thereby improving the energy utilization rate.

[0021] 2. In this utility model, when it is necessary to clean the filter screen, the connecting column is pulled to move the mounting column, which in turn moves the mounting block. The mounting block then moves the filter screen so that it slides on opposite sides of the double-sided brush plate. The double-sided brush plate cleans the surface of the filter screen, thereby making it easier for the energy utilization device to clean the filter screen and improving the cleaning efficiency of the filter screen. Attached Figure Description

[0022] Figure 1 This is a perspective view of a device for high-efficiency utilization of tail gas energy from a submerged arc furnace, as proposed in this utility model.

[0023] Figure 2 This is a cross-sectional view of a waste heat boiler for a high-efficiency energy utilization device for tail gas from a blast furnace, as proposed in this utility model.

[0024] Figure 3 This is a cross-sectional view of the filter box of a high-efficiency energy utilization device for tail gas from a submerged arc furnace, as proposed in this utility model.

[0025] Legend:

[0026] 1. Waste heat boiler; 2. Support block; 3. Support column; 4. Support block; 5. Inner boiler; 6. Water inlet pipe; 7. Support plate one; 8. Filter box; 9. Air inlet pipe; 10. Air guide pipe; 11. Tar adsorption plate; 12. Mounting groove; 13. Mounting block; 14. Mounting column; 15. Connecting column; 16. Filter screen; 17. Double-sided brush plate; 18. Drain pipe; 19. Valve; 20. Temperature sensor; 21. Support plate two; 22. Fan; 23. Air intake pipe; 24. Air delivery pipe. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figures 1-3This utility model provides an embodiment of a high-efficiency energy utilization device for tail gas from a submerged arc furnace, comprising a waste heat boiler 1. Support blocks 4 are uniformly fixedly connected to the bottom perimeter of the waste heat boiler 1. An inner boiler 5 is fixedly connected to the upper part of the support blocks 4. A water inlet pipe 6 is fixedly connected to the upper part of the inner boiler 5. Connecting blocks 2 are uniformly fixedly connected to the lower perimeter of the outer side of the waste heat boiler 1. A support column 3 is fixedly connected to the lower part of the connecting blocks 2. A drain pipe 18 is fixedly connected to the lower part of the waste heat boiler 1. A valve 19 is fixedly connected to the front side of the drain pipe 18. A support plate 7 is fixedly connected to the lower left side of the waste heat boiler 1. A filter box 8 is fixedly connected to the upper part of the support plate 7. An air inlet pipe 9 is fixedly connected to the left side of the filter box 8. A guide pipe 10 is fixedly connected to the right side of the air inlet pipe 9. The end of the air inlet pipe 9 away from the filter box 8 is connected to the exhaust pipe of a sealed submerged arc furnace. The end of the guide pipe 10 away from the filter box 8 is connected to the waste heat boiler 1. A tar adsorption plate 11 is fixedly connected to the left side of the filter box 8 via a sliding connection. Several mounting slots 12 are opened on the upper part of the filter box 8. Mounting blocks 13 are slidably connected inside the mounting slots 12. A filter screen 16 is fixedly connected to the lower part of the mounting blocks 13. A gas conveying assembly is set on the left side of the waste heat boiler 1 for conveying the exhaust gas. The gas conveying assembly includes a second support plate 21, which is fixedly connected to the lower right side of the waste heat boiler 1. A fan 22 is fixedly connected to the upper part of the second support plate 21. An air intake pipe 23 is fixedly connected to the input end of the fan 22. A gas conveying pipe 24 is fixedly connected to the output end of the fan 22. A temperature sensor 20 is fixedly connected to the right side of the inner wall of the waste heat boiler 1. Another temperature sensor 20 is fixedly connected to the inside of the inner boiler 5. The end of the air intake pipe 23 away from the fan 22 is fixedly connected to the waste heat boiler 1. The end of the gas conveying pipe 24 away from the fan 22 is connected to the gas pipeline.

[0029] When it is necessary to recover and utilize the energy from the tail gas of the electric arc furnace, the tail gas discharged from the closed exhaust pipe of the electric arc furnace is first introduced into the filter box 8 through the air inlet pipe 9. The tail gas passes through the tar adsorption plate 11 to effectively filter the tar in the tail gas. Then, the tail gas passes through the filter screen 16 to further filter the dust in the tail gas. Next, the tail gas is guided into the waste heat boiler 1 through the air guide pipe 10. The tail gas exchanges heat with the inner boiler 5 to recover and utilize the heat energy of the tail gas. When the temperature sensor 20 detects that the temperature of the tail gas inside the waste heat boiler 1 is lower than the temperature inside the inner boiler 5, the fan 22 is started to draw the air inside the waste heat boiler 1 into the fan 22 through the air intake pipe 23. Finally, the tail gas is input into the gas pipeline through the gas transmission pipe 24, thereby realizing the efficient recovery and utilization of the energy from the tail gas of the electric arc furnace, thus improving the energy utilization rate.

[0030] A cleaning component is provided on the upper part of the waste heat boiler 1 for cleaning the filter screen 16. The cleaning component includes a double-sided brush plate 17, which is uniformly fixedly connected to the upper part of the waste heat boiler 1. A mounting column 14 is fixedly connected to the upper part of the mounting block 13. A connecting column 15 is fixedly connected to both the front and rear sides of the mounting column 14. The filter screen 16 is slidably connected inside the mounting groove 12. The double-sided brush plate 17 is located on the left and right sides of the upper part of the mounting block 13.

[0031] When the filter screen 16 needs to be cleaned, first pull the connecting column 15 to move the mounting column 14. The mounting column 14 moves the mounting block 13, which in turn moves the filter screen 16, allowing the filter screen 16 to slide on the opposite side of the double-sided brush plate 17. This ensures that the surface of the filter screen 16 is in full contact with the double-sided brush plate 17, and the double-sided brush plate 17 efficiently cleans the surface of the filter screen 16, removing dust and impurities. This makes it easier for the energy utilization device to clean the filter screen 16 and improves the cleaning efficiency of the filter screen 16.

[0032] Working principle: When it is necessary to recover and utilize the energy from the tail gas of the electric arc furnace, the tail gas discharged from the closed exhaust pipe of the electric arc furnace is introduced into the filter box 8 through the air inlet pipe 9. Then, the tar in the tail gas is filtered by the tar adsorption plate 11, and the dust in the tail gas is filtered by the filter screen 16. Then, the tail gas is input into the waste heat boiler 1 through the air guide pipe 10. The tail gas exchanges heat with the inner boiler 5. When the temperature sensor 20 detects that the temperature of the tail gas inside the waste heat boiler 1 is lower than the temperature inside the inner boiler 5, the blower 22 is started to make the suction pipe 23 run to draw the air inside the waste heat boiler 1 into the blower 22. Finally, the air is drawn into the inner boiler 1 through the air guide pipe 10. The gas pipeline 24 inputs the exhaust gas into the gas pipeline, thereby enabling the energy utilization device to efficiently utilize the exhaust gas energy of the electric arc furnace and improve the energy utilization rate. When it is necessary to clean the filter screen 16, the connecting column 15 is pulled to move the mounting column 14, which in turn moves the mounting block 13. The mounting block 13 then moves the filter screen 16 so that it slides on the opposite side of the double-sided brush plate 17. The surface of the filter screen 16 is cleaned by the double-sided brush plate 17, thus making it easy for the energy utilization device to clean the filter screen 16 and improving the cleaning efficiency of the filter screen 16.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for high-efficiency utilization of tail gas energy from a submerged arc furnace, comprising a waste heat boiler (1), characterized in that: The waste heat boiler (1) has support blocks (4) evenly fixedly connected around its bottom. An inner boiler (5) is fixedly connected to the upper part of the support blocks (4). A water inlet pipe (6) is fixedly connected to the upper part of the inner boiler (5). A support plate (7) is fixedly connected to the lower left side of the waste heat boiler (1). A filter box (8) is fixedly connected to the upper part of the support plate (7). An air inlet pipe (9) is fixedly connected to the left side of the filter box (8). An air guide pipe (10) is fixedly connected to the right side of the air inlet pipe (9). The filter box (8) has a tar adsorption plate (11) fixedly connected to the left side inside. The filter box (8) has several mounting slots (12) on the upper part. The mounting slots (12) have mounting blocks (13) slidably connected inside. The mounting blocks (13) have a filter screen (16) fixedly connected to the lower part. The waste heat boiler (1) has a cleaning component on the upper part for cleaning the filter screen (16). The waste heat boiler (1) has a gas conveying component on the left side for conveying the exhaust gas.

2. The energy-efficient utilization device for tail gas from a submerged arc furnace according to claim 1, characterized in that: The cleaning assembly includes a double-sided brush plate (17), which is uniformly fixedly connected to the upper part of the waste heat boiler (1). The upper part of the mounting block (13) is fixedly connected to a mounting column (14), and the mounting column (14) is fixedly connected to a connecting column (15) on both the front and rear sides.

3. The energy-efficient utilization device for tail gas from a submerged arc furnace according to claim 1, characterized in that: The gas transmission assembly includes a second support plate (21), which is fixedly connected to the lower right side of the waste heat boiler (1). A fan (22) is fixedly connected to the upper part of the second support plate (21). An air intake pipe (23) is fixedly connected to the input end of the fan (22), and a gas transmission pipe (24) is fixedly connected to the output end of the fan (22). A temperature sensor (20) is fixedly connected to the right side of the inner wall of the waste heat boiler (1).

4. The energy-efficient utilization device for tail gas from a submerged arc furnace according to claim 1, characterized in that: The waste heat boiler (1) has connecting blocks (2) evenly fixed around its lower outer side, and a support column (3) is fixedly connected to the lower part of the connecting blocks (2).

5. The energy-efficient utilization device for tail gas from a submerged arc furnace according to claim 1, characterized in that: The waste heat boiler (1) is fixedly connected to a drain pipe (18) at the bottom, and a valve (19) is fixedly connected to the front side of the drain pipe (18).

6. The energy-efficient utilization device for tail gas from a submerged arc furnace according to claim 1, characterized in that: The end of the air inlet pipe (9) away from the filter box (8) is connected to the exhaust pipe of the closed-type electric arc furnace, and the end of the air guide pipe (10) away from the filter box (8) is slidably connected to the waste heat boiler (1).

7. The energy-efficient utilization device for tail gas from a submerged arc furnace according to claim 2, characterized in that: The filter screen (16) is slidably connected inside the mounting groove (12), and the double-sided brush plate (17) is located on the upper left and right sides of the mounting block (13).

8. The energy-efficient utilization device for tail gas from a submerged arc furnace according to claim 3, characterized in that: Another temperature sensor (20) is fixedly connected inside the inner boiler (5). The end of the suction pipe (23) away from the fan (22) is fixedly connected to the waste heat boiler (1). The end of the gas transmission pipe (24) away from the fan (22) is connected to the gas pipeline.

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