High-temperature-resistant filter cartridge for off-gas treatment of a submerged arc furnace

Abstract

The utility model belongs to the field of mineral heat furnace tail gas treatment technology, specifically discloses a kind of high-temperature-resistant filter cartridge for mineral heat furnace tail gas treatment, including main cylinder, the upper part of main cylinder outside is fixed with reinforcing sleeve, and the top end of reinforcing sleeve is transversely welded with assembly piece, the both sides of assembly piece inside are respectively provided with vertical groove, and vertical groove is fixedly inserted with inserting rod, and the top between the inserting rod of both sides is fixed with lap joint disc. The high-temperature-resistant filter cartridge for mineral heat furnace tail gas treatment is replaced by the main cylinder of φ60*2500 by the traditional φ130 filter cartridge, and the novel high-temperature filter element improves the high-temperature resistance, is specially used for the treatment of mineral heat furnace tail gas, and the ceramic cylinder is inserted into the hole in the top of the main cylinder in more detail, a secondary filtration structure can be added to the gas outlet port, the inserting rods on both sides of the lap joint disc are fixed in the vertical groove at this time, the bolts are screwed from both sides to tighten and reinforce, the center slot can be used for gas outflow, and the problem of poor filter cartridge strength is solved.

Description

Technical Field

[0001] This utility model relates to the field of tail gas treatment technology for electric arc furnaces, specifically a high-temperature resistant filter cartridge for tail gas treatment of electric arc furnaces. Background Technology

[0002] An expansion furnace is an electric furnace used for smelting metals such as ferrosilicon and ferromanganese. The furnace body is mostly lined with carbon or magnesium materials, which are fireproof and damage-resistant. It is equipped with self-growing electrodes, which generate energy and carry out smelting by contacting the current with the furnace charge. Materials can be added continuously during the process and slag can be removed.

[0003] During the smelting process, the furnace will emit waste gases such as carbon monoxide and hydrogen, and the temperature of the gas mixed with solid particles can reach 400-600℃. The traditional filter cartridges are not strong enough to retain particulate waste during long-term filtration and are easily incinerated. Frequent replacement of filter cartridges increases costs and is inconvenient.

[0004] Now, a novel high-temperature resistant filter cartridge for treating tail gas from a submerged arc furnace is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-temperature resistant filter cartridge for treating tail gas from a submerged arc furnace, so as to solve the problem of poor filter cartridge strength mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature resistant filter cartridge for treating tail gas from a submerged arc furnace, comprising a main cylinder, a reinforcing sleeve fixedly attached to the upper part of the main cylinder, and an assembly piece horizontally welded around the top of the reinforcing sleeve, vertical grooves respectively provided on both sides inside the assembly piece, and insert rods fixedly inserted into the vertical grooves, a lap plate fixedly attached to the top between the two insert rods, and a slot provided at the center of the lap plate, a ceramic cylinder vertically fixed at the center inside the lap plate, support blocks fixedly attached to the upper parts of both sides inside the main cylinder, and bolts threadedly connected to both sides outside the assembly piece.

[0007] As a further technical solution of this utility model, the ceramic cylinder is embedded in the upper part of the main cylinder body, and the support blocks are symmetrically engaged with the lower parts of both sides of the ceramic cylinder.

[0008] As a further technical solution of this utility model, a plug is fixedly connected to the lower part of the main cylinder body, and a collar is fixed to the bottom of the plug. A rubber sleeve is fixed around the top edge of the collar, and an adhesive layer is provided on the inner wall of the rubber sleeve. Release paper is adhered to the surface of the adhesive layer, and a pull strip is fixed around the top of the release paper.

[0009] As a further technical solution of this utility model, the rubber sleeve is wrapped around the lower part of the main cylinder, and the area of ​​the rubber layer is the same as that of the release paper.

[0010] As a further technical solution of this utility model, a spiral tube is wound and fixed on the lower surface of the outer side of the main cylinder, and an inlet pipe is fixed on the left side of the bottom of the spiral tube. A lower valve is installed in the inlet pipe, and an outlet pipe is fixed on the upper right corner of the outer side of the spiral tube. An upper valve is installed in the outlet pipe.

[0011] As a further technical solution of this utility model, the inner diameter of the spiral tube is matched with that of the main cylinder, and the main cylinder and the spiral tube are arranged in concentric circles.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the high-temperature resistant filter cartridge for treating tail gas of electric arc furnace not only improves the durability of the filter cartridge and makes it easy to open or seal the bottom of the filter cartridge, but also reduces the temperature of the gas;

[0013] (1) By replacing the traditional φ130 filter cartridge with a φ60*2500 main cylinder, this new type of high temperature filter cartridge improves the high temperature resistance and is used for the treatment of tail gas of electric arc furnace. Then, a ceramic cylinder with finer holes is inserted into the top of the main cylinder, and an additional filtration structure can be added to the gas outlet. At this time, the insert rods on both sides of the overlapping plate are fixed in the vertical groove, and bolts are screwed in from both sides for tightening and reinforcement. The groove in the center of the overlapping plate can be connected to the pipe for gas to flow out.

[0014] (2) By fixing a plug block to the lower part of the main cylinder body, the collar is fixed to the bottom of the main cylinder body, so that the plug block is embedded in the lower part of the main cylinder body. Pinch the pull bar, tear off the release paper sticking to the outside of the rubber layer, smooth out the folded rubber sleeve, so that the side with the rubber layer on its inner wall is attached to the outside of the main cylinder body for sealing. If you want to open it, peel off the rubber sleeve and collar layer by layer, which is very convenient.

[0015] (3) By winding and fixing a spiral tube on the lower surface of the main cylinder, if the temperature of the mixed gas is too high, it may damage the main cylinder. In this case, a water source is connected to the liquid inlet pipe and the lower valve is started. Under the pressure of the external pump, the cooling water is transported along the spiral tube to the top and then discharged from the upper valve in the liquid outlet pipe to cool the lower half of the outer wall of the main cylinder. The temperature of the gas passing through this area is reduced by heat transfer, so as to extend the service life of the main cylinder. Attached Figure Description

[0016] Figure 1 This is a frontal cross-sectional view of the present invention.

[0017] Figure 2 This is a front view cross-sectional structural diagram of the ceramic cylinder of this utility model;

[0018] Figure 3 This is a front view cross-sectional schematic diagram of the rubber sleeve of this utility model;

[0019] Figure 4 This is a front view schematic diagram of the spiral tube structure of this utility model.

[0020] In the diagram: 1. Main cylinder; 2. Assembly piece; 3. Overlap plate; 4. Groove; 5. Ceramic cylinder; 6. Bolt; 7. Insert rod; 8. Reinforcing sleeve; 9. Spiral tube; 10. Upper valve; 11. Discharge pipe; 12. Lower valve; 13. Inlet pipe; 14. Collar; 15. Plug; 16. Vertical groove; 17. Support block; 18. Release paper; 19. Adhesive layer; 20. Rubber sleeve; 21. Tie rod. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 An embodiment of this utility model provides a high-temperature resistant filter cartridge for treating tail gas of a submerged arc furnace, comprising a main cylinder 1, a reinforcing sleeve 8 fixedly attached to the upper part of the main cylinder 1, and an assembly piece 2 horizontally welded around the top of the reinforcing sleeve 8. Vertical grooves 16 are respectively provided on both sides inside the assembly piece 2, and a rod 7 is fixedly inserted into the vertical groove 16. A connecting plate 3 is fixedly attached to the top between the two rods 7, and a slot 4 is provided at the center of the connecting plate 3. A ceramic cylinder 5 is longitudinally fixed at the center inside the connecting plate 3. Support blocks 17 are respectively fixed to the upper part of both sides inside the main cylinder 1, and bolts 6 are threadedly connected to both sides outside the assembly piece 2.

[0023] The ceramic cylinder 5 is embedded in the upper part of the main cylinder 1, and the support blocks 17 are symmetrically engaged on the lower parts of both sides of the ceramic cylinder 5.

[0024] Specifically, such as Figure 1 and Figure 2 As shown, the traditional φ130 filter cartridge is replaced with a φ60*2500 main cylinder 1. This new type of high-temperature filter cartridge improves the high-temperature resistance and is specially used for the treatment of exhaust gas from electric arc furnaces. A ceramic cylinder 5 with finer holes is inserted into the top of the main cylinder 1, which can add another layer of filtration structure at the gas outlet. At this time, the insert rods 7 on both sides of the overlapping plate 3 are fixed in the vertical groove 16, and bolts 6 are screwed in from both sides for tightening and reinforcement to prevent the structure from loosening due to airflow.

[0025] A plug 15 is fixedly connected to the lower part of the main cylinder 1, and a collar 14 is fixed to the bottom of the plug 15. A rubber sleeve 20 is fixed around the top edge of the collar 14, and an adhesive layer 19 is provided on the inner wall of the rubber sleeve 20. Release paper 18 is adhered to the surface of the adhesive layer 19, and a pull strip 21 is fixed around the top of the release paper 18. The rubber sleeve 20 wraps around the lower part of the outside of the main cylinder 1, and the adhesive layer 19 and the release paper 18 have the same area.

[0026] Specifically, such as Figure 1 and Figure 3 As shown, fix the collar 14 to the bottom of the main cylinder 1 so that the plug 15 is embedded in the lower part of the main cylinder 1. Pinch the pull strip 21, peel off the release paper 18 sticking to the outside of the adhesive layer 19, and flatten the folded rubber sleeve 20 so that the side with the adhesive layer 19 on its inner wall is attached to the outside of the main cylinder 1 for sealing. If you want to open it, peel off the rubber sleeve 20 and the collar 14 layer by layer.

[0027] A spiral tube 9 is wound and fixed on the lower surface of the outer side of the main cylinder 1, and an inlet pipe 13 is fixed on the left side of the bottom of the spiral tube 9. A lower valve 12 is installed in the inlet pipe 13. An outlet pipe 11 is fixed on the upper right corner of the outer side of the spiral tube 9, and an upper valve 10 is installed in the outlet pipe 11. The inner diameter of the spiral tube 9 matches that of the main cylinder 1, and the main cylinder 1 and the spiral tube 9 are arranged in concentric circles.

[0028] Specifically, such as Figure 1 and Figure 4 As shown, if the temperature of the mixed gas is too high, it may damage the main cylinder 1. In this case, a water source is connected to the liquid inlet pipe 13, and the lower valve 12 is activated. Under the pressure of the external pump, the cooling water is transported along the spiral pipe 9 to the top and then discharged from the upper valve 10 opened in the liquid outlet pipe 11 to cool the lower half of the outer wall of the main cylinder 1. The temperature of the gas passing through this area is reduced by heat transfer.

[0029] Working Principle: In use, this invention first replaces the traditional φ130 filter cartridge with a φ60*2500 main cylinder 1. This new type of high-temperature filter cartridge improves high-temperature resistance and is specifically designed for treating exhaust gas from submerged arc furnaces. Then, a ceramic cylinder 5 with finer perforations is inserted into the top of the main cylinder 1, adding another layer of filtration at the outlet. At this point, the inserts 7 on both sides of the connecting plate 3 are fixed in the vertical groove 16, and bolts 6 are screwed in from both sides for tightening and reinforcement. The groove 4 at the center of the connecting plate 3 can be connected to a pipe for gas outflow. If the temperature of the mixed gas is too high, potentially damaging the main cylinder 1, a water source is connected to the liquid inlet pipe 13, and the lower valve is activated. 12. Under the pressure of the external pump, the cooling water is transported along the spiral tube 9 to the top and then discharged from the upper valve 10 opened in the outlet tube 11 to cool the lower half of the outer wall of the main cylinder 1. The temperature of the gas passing through this part is reduced by heat transfer. Finally, the collar 14 is fixed to the bottom of the main cylinder 1 so that the plug 15 is embedded in the lower part of the main cylinder 1. Pinch the pull strip 21, peel off the release paper 18 sticking to the outside of the adhesive layer 19, and flatten the folded rubber sleeve 20 so that the side with the adhesive layer 19 on its inner wall is attached to the outside of the main cylinder 1 for sealing. If you want to open it, peel off the rubber sleeve 20 and the collar 14 layer by layer.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-temperature resistant filter cartridge for treating tail gas from a submerged arc furnace, comprising a main cylinder (1), characterized in that: A reinforcing sleeve (8) is fixed on the upper part of the main cylinder (1), and an assembly piece (2) is welded horizontally around the top of the reinforcing sleeve (8). Vertical grooves (16) are provided on both sides inside the assembly piece (2), and a rod (7) is fixedly inserted in the vertical groove (16). A lap plate (3) is fixed on the top between the two rods (7), and a slot (4) is provided at the center of the lap plate (3). A ceramic cylinder (5) is fixed longitudinally at the center inside the lap plate (3). Support blocks (17) are fixed on the upper part of both sides inside the main cylinder (1), and bolts (6) are threaded on both sides outside the assembly piece (2).

2. The high-temperature resistant filter cartridge for treating tail gas of a submerged arc furnace according to claim 1, characterized in that: The ceramic cylinder (5) is embedded in the upper part of the main cylinder (1), and the support block (17) is symmetrically engaged on the lower part of both sides of the ceramic cylinder (5).

3. The high-temperature resistant filter cartridge for treating tail gas of a submerged arc furnace according to claim 1, characterized in that: A stopper (15) is fixedly connected to the lower part of the main cylinder (1), and a collar (14) is fixed to the bottom of the stopper (15). A rubber sleeve (20) is fixed around the top edge of the collar (14), and an adhesive layer (19) is provided on the inner wall of the rubber sleeve (20). Release paper (18) is adhered to the surface of the adhesive layer (19), and a pull strip (21) is fixed around the top of the release paper (18).

4. The high-temperature resistant filter cartridge for treating tail gas of a submerged arc furnace according to claim 3, characterized in that: The rubber sleeve (20) is wrapped around the outside of the main cylinder (1) for about 100 minutes, and the adhesive layer (19) has the same area as the release paper (18).

5. A high-temperature resistant filter cartridge for treating tail gas from a submerged arc furnace according to claim 1, characterized in that: The lower surface of the outer side of the main cylinder (1) is wound with a spiral tube (9), and an inlet pipe (13) is fixed on the left side of the bottom of the spiral tube (9). A lower valve (12) is installed in the inlet pipe (13). An outlet pipe (11) is fixed on the upper right corner of the outer side of the spiral tube (9), and an upper valve (10) is installed in the outlet pipe (11).

6. A high-temperature resistant filter cartridge for treating tail gas from a submerged arc furnace according to claim 5, characterized in that: The inner diameter of the spiral tube (9) matches that of the main cylinder (1), and the main cylinder (1) and the spiral tube (9) are arranged in concentric circles.

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