Circulating channel type industrial silicon furnace flue gas purification treatment device

Abstract

The utility model discloses a circulating channel type industrial silicon furnace flue gas purification treatment device, which belongs to the technical field of industrial silicon furnace flue gas treatment, and comprises a purification tower and a water storage tank arranged at the bottom end of the purification tower, a smoke inlet pipe of an L-shaped structure is fixedly embedded in the side wall of the purification tower, a water spraying plate is fixedly embedded in the purification tower, an accumulation part is arranged in the center of the bottom end face of the water storage tank, a filter plate is fixedly embedded in one side of the water storage tank, and a circulating pipe is installed at the top of the other side of the water storage tank; wherein a pump body mechanism connected with the top of the purification tower is mounted on the water storage tank, the circulating channel type industrial silicon furnace flue gas purification treatment device is convenient for adsorbing, filtering and depositing adsorbed impurities, and the condition that the impurities block a filtering structure is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of industrial silicon furnace flue gas treatment technology, specifically relating to a circulating channel type industrial silicon furnace flue gas purification and treatment device. Background Technology

[0002] In the industrial silicon smelting process, the flue gas dust mainly consists of two parts: one part is the mechanically blown material of the furnace charge, such as coke powder and coal powder; the other part is the gaseous SiO formed by the reduction of SiO2 in silica. This SiO should continue to be reduced to silicon, but in reality, some of it always escapes from the material surface, is oxidized to SiO2, forms amorphous extremely fine particles, and is carried out of the furnace by the flue gas.

[0003] Patent application number 202321554453.X discloses a silicon furnace flue gas purification system. The system includes an industrial silicon electric furnace, a waste heat power generation air cooler, a low-temperature SCR denitrification device, a positive pressure bag filter dust collector, and a wet desulfurization device, which are connected sequentially along the industrial flue gas treatment direction. This utility model effectively treats the emitted industrial flue gas for denitrification and desulfurization by introducing a low-temperature SCR denitrification device and a wet desulfurization device into the silicon furnace flue gas purification system, which greatly reduces the harmful substances in the emitted flue gas. Secondly, this system adds a denitrification device before the positive pressure dust collector.

[0004] The above technical solution uses a positive pressure bag filter to filter dust in flue gas. However, crystalline SiO2, coke powder and coal powder will accumulate in the positive pressure bag filter, causing blockage and poor filtration effect on flue gas. Regular cleaning of the positive pressure bag filter is required. Utility Model Content

[0005] (1) Technical problems to be solved

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a circulating channel type industrial silicon furnace flue gas purification and treatment device. This circulating channel type industrial silicon furnace flue gas purification and treatment device aims to solve the technical problem that under the existing technology, crystalline SiO2, coke powder and coal powder will accumulate in the positive pressure bag dust collector, causing blockage of the positive pressure bag dust collector, resulting in poor filtration effect of flue gas and the need for regular cleaning of the positive pressure bag dust collector.

[0007] (2) Technical solution

[0008] To solve the above-mentioned technical problems, this utility model provides a circulating channel type industrial silicon furnace flue gas purification and treatment device. The circulating channel type industrial silicon furnace flue gas purification and treatment device includes a purification tower and a water storage tank installed at the bottom of the purification tower. The top of the purification tower is fixed with a flue pipe, and the side wall of the purification tower is embedded with an L-shaped flue pipe. A water spray plate is embedded in the purification tower. An accumulation part is provided at the center of the bottom surface of the water storage tank, and a filter plate is embedded in one side of the water storage tank. A circulation pipe is installed on the top of the other side of the water storage tank. A pump body mechanism connected to the top of the purification tower is installed on the water storage tank.

[0009] When using this technical solution, a water spray plate is installed in the purification tower. A water pump sprays water from the atomizing nozzles through the suction pipe and the inlet pipe. The atomized water mist adsorbs crystalline SiO2, coke powder, and coal powder in the flue gas entering the flue gas through the flue gas inlet pipe. After adsorption, the adsorbed water is discharged into the water storage tank along the circulation pipe. The filter plate filters the impurities and causes them to be deposited in the accumulation section. After the water pump is turned off, the water in the pipeline flows back to the water storage tank and backwashes the surface of the filter plate, thereby causing the impurities adsorbed on the filter plate to fall off. This facilitates the adsorption, filtration, and deposition of the adsorbed impurities and avoids the situation where impurities clog the filter structure. By embedding a filter element in the purification tower, the filter element can filter a small amount of escaped impurities. Because the filter element filters a small amount of impurities, it can be used for a longer period of time. Since the end of the flue gas inlet pipe extending into the purification tower is set downward, the atomized water is prevented from entering the flue gas inlet pipe. At the same time, the splash plate can block the splashed water mist.

[0010] Preferably, a drain pipe is fixedly installed at the bottom end of the accumulation section, and a control valve is installed on the drain pipe.

[0011] Furthermore, the flue gas inlet pipe is equipped with a connecting flange, and a splash guard is embedded and fixed at the bottom of the end of the flue gas inlet pipe that extends into the purification tower. The top end of the circulation pipe is fixedly connected to the purification tower.

[0012] Furthermore, the pump body mechanism includes a water pump fixed to the top of the water storage tank and a water pumping pipe installed on the water pump, the water pumping pipe being connected to the bottom of the water storage tank.

[0013] Furthermore, a support pipe is fixed at the top of the purification tower, and a water inlet pipe is embedded in the support pipe. The two ends of the water inlet pipe are connected to a water pump and a spray plate, respectively.

[0014] Furthermore, the water spray plate is provided with multiple smoke exhaust holes, and multiple atomizing nozzles are installed at the bottom of the water spray plate.

[0015] Furthermore, the inner wall of the purification tower is provided with a support for supporting the spray plate, and a filter element located above the spray plate is fixed in the purification tower.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention features a water spray plate installed in the purification tower. A water pump sprays water from the atomizing nozzles through a water intake pipe and an inlet pipe. The atomized water mist adsorbs crystalline SiO2, coke powder, and coal powder in the flue gas entering through the flue gas inlet pipe. After adsorption, the adsorbed particles are discharged into a water storage tank along a circulation pipe. The filter plate filters the impurities and causes them to deposit in the accumulation section. After the water pump is turned off, the water in the pipeline flows back into the water storage tank and backwashes the surface of the filter plate, thereby causing the impurities adsorbed on the filter plate to fall off. This facilitates the adsorption, filtration, and deposition of the adsorbed impurities and avoids the situation where impurities clog the filter structure.

[0019] By embedding a filter element inside the purification tower, the filter element can filter out a small amount of escaping impurities. Because the filter element filters out a small amount of impurities, it can be used for a longer period of time. Since the end of the flue pipe that extends into the purification tower is set downwards, the atomized water is prevented from entering the flue pipe. At the same time, the splash plate can block the splashed water mist. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the water storage tank in this utility model;

[0023] Figure 3 This is a cross-sectional structural diagram of the purification tower in this utility model;

[0024] Figure 4 This utility model Figure 3 An enlarged schematic diagram of the structure at point A in the middle.

[0025] The labels in the attached diagram are as follows: 1. Water storage tank; 2. Circulation pipe; 3. Stacking section; 4. Pumping pipe; 5. Water pump; 6. Filter plate; 7. Inlet pipe; 8. Purification tower; 9. Exhaust pipe; 10. Inlet pipe; 11. Sewage pipe; 12. Support pipe; 13. Splash guard; 14. Spray plate; 15. Filter element; 16. Support section; 17. Exhaust hole; 18. Atomizing nozzle. Detailed Implementation

[0026] 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.

[0027] This specific embodiment is a circulating channel type industrial silicon furnace flue gas purification and treatment device, the structural schematic diagram of which is shown below. Figure 1 and Figure 2 As shown, the circulating channel type industrial silicon furnace flue gas purification treatment device includes a purification tower 8 and a water storage tank 1 installed at the bottom of the purification tower 8. The top of the purification tower 8 is fixed with a flue pipe 9, and the side wall of the purification tower 8 is embedded with an L-shaped flue pipe 10. A water spray plate 14 is embedded in the purification tower 8. An accumulation part 3 is provided at the center of the bottom end face of the water storage tank 1. A filter plate 6 is embedded in one side of the water storage tank 1, and a circulation pipe 2 is installed on the top of the other side of the water storage tank 1. A pump body mechanism connected to the top of the purification tower 8 is installed on the water storage tank 1.

[0028] A drain pipe 11 is fixedly installed at the bottom of the accumulation section 3. A control valve is installed on the drain pipe 11. A connecting flange is provided on the flue gas inlet pipe 10. A splash guard 13 is embedded and fixed at the bottom of the end of the flue gas inlet pipe 10 that extends into the purification tower 8. The top end of the circulation pipe 2 is fixedly connected to the purification tower 8. The pump body mechanism includes a water pump 5 fixed at the top of the water storage tank 1 and a water suction pipe 4 installed on the water pump 5. The water suction pipe 4 is connected to the bottom of the water storage tank 1. The water pump 5 sprays water from the atomizing nozzle 18 through the water suction pipe 4 and the water inlet pipe 7. The atomized water mist adsorbs the crystalline SiO2, coke powder and coal powder in the flue gas input into the flue gas inlet pipe 10. After adsorption, the adsorbed water is discharged into the water storage tank 1 along the circulation pipe 2. The filter plate 6 filters the impurities and causes them to be deposited in the accumulation section 3. After the water pump 5 is turned off, the water in the pipe flows back to the water storage tank 1 and backwashes the surface of the filter plate 6, thereby causing the impurities adsorbed on the filter plate 6 to fall off.

[0029] like Figure 3 and Figure 4As shown, a support pipe 12 is fixed at the top of the purification tower 8, and a water inlet pipe 7 is embedded in the support pipe 12. The two ends of the water inlet pipe 7 are connected to the water pump 5 and the spray plate 14, respectively. The spray plate 14 has multiple exhaust holes 17, and multiple atomizing nozzles 18 are installed at the bottom of the spray plate 14. The inner wall of the purification tower 8 is provided with a support part 16 for supporting the spray plate 14, and a filter element 15 is fixed in the purification tower 8 above the spray plate 14. The purified smoke is discharged from the exhaust pipe 9 along the exhaust holes 17 and the filter element 15. The filter element 15 can filter a small amount of impurities that escape. Since the filter element 15 filters out a small amount of impurities, it can be used for a longer period of time. Since the end of the exhaust pipe 10 that extends into the purification tower 8 is set downward, the situation of atomized water entering the exhaust pipe 10 is avoided.

[0030] The structural diagram of the water storage tank 1 of the circulating channel type industrial silicon furnace flue gas purification and treatment device is shown below. Figure 2 As shown, the cross-sectional structural schematic diagram of its purification tower 8 is as follows: Figure 3 As shown, its Figure 3 An enlarged schematic diagram of the structure at point A is shown below. Figure 4 As shown.

[0031] Working principle: When using the device of this technical solution, the flue gas inlet pipe 10 is connected to the industrial silicon furnace through a flange. The water pump 5 is started, causing water to be sprayed from the atomizing nozzle 18 through the water suction pipe 4 and the water inlet pipe 7. The atomized water mist adsorbs the crystalline SiO2, coke powder, and coal powder in the flue gas entering the flue gas inlet pipe 10, and after adsorption, it is discharged into the water storage tank 1 along the circulation pipe 2. The filter plate 6 filters the impurities and causes them to be deposited in the accumulation part 3. After the water pump 5 is turned off, the water in the pipeline flows back to the water storage tank 1 and filters the filter plate 6. The surface is backflushed, which causes the impurities adsorbed on the filter plate 6 to fall off, making it easier to adsorb, filter and deposit the adsorbed impurities, and avoiding the situation where impurities clog the filter structure; the filter element 15 embedded in the purification tower 8 can filter a small amount of escaped impurities. Since the filter element 15 filters a small amount of impurities, it can be used for a longer period of time. Since the end of the flue pipe 10 that extends into the purification tower 8 is set downward, the situation of atomized water entering the flue pipe 10 is avoided. At the same time, the splash plate 13 can block the splashed water mist.

[0032] All technical features in this embodiment can be freely combined according to actual needs.

[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 circulating channel type industrial silicon furnace flue gas purification and treatment device, comprising a purification tower (8) and a water storage tank (1) installed at the bottom of the purification tower (8), characterized in that, The top of the purification tower (8) is fixed with a smoke exhaust pipe (9), and the side wall of the purification tower (8) is embedded with a smoke inlet pipe (10) in an L-shape. A water spray plate (14) is embedded in the purification tower (8). An accumulation part (3) is provided at the center of the bottom end face of the water storage tank (1). A filter plate (6) is embedded in one side of the water storage tank (1). A circulation pipe (2) is installed on the top of the other side of the water storage tank (1). A pump body mechanism connected to the top of the purification tower (8) is installed on the water storage tank (1).

2. The circulating channel type industrial silicon furnace flue gas purification and treatment device according to claim 1, characterized in that, A drain pipe (11) is fixedly installed at the bottom of the accumulation section (3), and a control valve is installed on the drain pipe (11).

3. The circulating channel type industrial silicon furnace flue gas purification and treatment device according to claim 1, characterized in that, The inlet pipe (10) is provided with a connecting flange, and a splash guard (13) is embedded and fixed at the bottom of the end of the inlet pipe (10) that extends into the purification tower (8). The top end of the circulation pipe (2) is fixedly connected to the purification tower (8).

4. The circulating channel type industrial silicon furnace flue gas purification and treatment device according to claim 1, characterized in that, The pump body mechanism includes a water pump (5) fixed at the top of the water storage tank (1) and a water pump pipe (4) installed on the water pump (5), the water pump pipe (4) being connected to the bottom of the water storage tank (1).

5. The circulating channel type industrial silicon furnace flue gas purification and treatment device according to claim 4, characterized in that, The top of the purification tower (8) is fixed with a support pipe (12), and a water inlet pipe (7) is embedded in the support pipe (12). The two ends of the water inlet pipe (7) are connected to the water pump (5) and the spray plate (14) respectively.

6. The circulating channel type industrial silicon furnace flue gas purification and treatment device according to claim 5, characterized in that, The water spray plate (14) has multiple smoke exhaust holes (17) and multiple atomizing nozzles (18) are installed at the bottom of the water spray plate (14).

7. The circulating channel type industrial silicon furnace flue gas purification and treatment device according to claim 6, characterized in that, The inner wall of the purification tower (8) is provided with a support (16) for supporting the spray plate (14), and a filter element (15) located above the spray plate (14) is fixed in the purification tower (8).

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