Phosphorus pool tail gas collecting device

Abstract

The utility model relates to tail gas treatment equipment technical field, concretely is a phosphorus receiving pool tail gas collecting device, including the spiral flow guide fan that phosphorus receiving pool is connected with phosphorus receiving pool, is equipped with one movable air inlet cover in phosphorus receiving pool, install one air inlet pipe that is in the U shape on the air inlet cover, the one end of air inlet pipe is installed away from the air inlet cover corrugated pipe, the air inlet of spiral flow guide fan is connected with corrugated pipe, the air outlet of spiral flow guide fan is connected with cyclone separator, the utility model discloses the negative pressure that spiral flow guide fan generates inhales the phosphorus receiving pool tail gas, transports to cyclone separator through U-shaped air inlet pipe and corrugated pipe, utilizes centrifugal force and separates the particulate impurity, further purifies gas through the filter box, finally by the harmful component absorption of the absorption liquid in the collection box, realizes the multistage processing of tail gas. The movable air inlet cover can adjust the position according to the phosphorus receiving pool liquid level change, ensures efficient collection of tail gas, avoids the leakage.

Description

Technical Field

[0001] This utility model relates to the technical field of exhaust gas treatment equipment, specifically to an exhaust gas collection device for phosphorus collection ponds. Background Technology

[0002] In the production of yellow phosphorus, the phosphorus receiving tank is a key piece of equipment, mainly used to receive and process high-temperature yellow phosphorus vapor. However, this process generates exhaust gases containing various toxic and harmful components such as phosphides, sulfides, and fluorides. If these exhaust gases are discharged directly without effective treatment, they will not only cause serious air pollution, posing a great threat to the surrounding ecological environment and residents' health, but also lead to the waste of phosphorus resources and increase the environmental compliance costs for enterprises.

[0003] Currently, existing phosphate receiving pool exhaust gas collection devices generally suffer from numerous problems. Some devices use fixed-position air inlets, which cannot adapt to dynamic changes in the liquid level within the phosphate receiving pool. When the liquid level in the receiving pool decreases, the distance between the air inlet and the liquid surface increases, causing a large amount of exhaust gas to escape into the environment before collection, significantly reducing collection efficiency. Conversely, when the liquid level rises, the air inlet may be submerged, affecting the normal operation of the device. In addition, the exhaust gas treatment processes of most devices are relatively simple, relying on only a single purification method, making it difficult to achieve deep purification of complex pollutants in the exhaust gas. For example, simple filtration alone is insufficient to remove tiny droplets and harmful gases from the exhaust gas, resulting in the final emissions failing to meet increasingly stringent environmental standards.

[0004] In view of this, we propose a device for collecting tail gas from phosphorus-receiving ponds. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a device for collecting tail gas from phosphorus collection ponds.

[0006] The technical solution of this utility model is:

[0007] A device for collecting exhaust gas from a phosphorus receiving pool includes a spiral guide fan connecting the phosphorus receiving pool and a vertically movable air inlet hood inside the pool. A U-shaped air inlet pipe is installed on the air inlet hood, and a corrugated pipe is installed at the end of the air inlet pipe furthest from the air inlet hood. The corrugated pipe is connected to the air inlet of the spiral guide fan, and the air outlet of the spiral guide fan is connected to a cyclone separator. The air outlet of the cyclone separator is connected to a filter box via a first connecting pipe, and the air outlet of the filter box is connected to a collection box via a second connecting pipe. A booster pump is installed on the second connecting pipe, and the collection box contains absorbent liquid. An exhaust pipe is located at the top of the collection box. This device draws in exhaust gas from the phosphorus receiving pool using the negative pressure generated by the spiral guide fan, transports it through the U-shaped air inlet pipe and the corrugated pipe to the cyclone separator, where centrifugal force separates particulate impurities. The gas is then further purified by the filter box, and finally, the absorbent liquid in the collection box absorbs harmful components, achieving multi-stage treatment of the exhaust gas. The vertically movable air intake hood can adjust its position according to changes in the phosphorus collection tank level, ensuring efficient collection of exhaust gas and preventing leakage. The overall structure is compact, and the treatment process is complete, significantly improving the purification efficiency and environmental friendliness of yellow phosphorus production exhaust gas.

[0008] As a preferred technical solution, a first support leg is fixedly connected to each of the four corners of the bottom of the phosphorus receiving pool, and the outer ring wall of the air intake hood is tightly fitted with the inner ring wall of the phosphorus receiving pool. The first support leg at the bottom of the phosphorus receiving pool provides stable support, while the design of the air intake hood being tightly fitted with the inner wall of the phosphorus receiving pool effectively prevents exhaust gas from escaping from the gap between the hood and the pool wall, thus enhancing the sealing performance.

[0009] As a preferred technical solution, a support plate is also included, with a second leg fixed at each of the four corners of the bottom of the support plate. The bottom of the second leg is flush with the bottom of the first leg. The support plate and the second legs are configured to provide an independent support platform for equipment such as spiral guide fans and cyclone separators, preventing the weight of the equipment from directly acting on the phosphorus receiving tank and preventing deformation or damage to the tank.

[0010] As a preferred technical solution, the spiral guide fan is fixed to the top of the support plate by a support column fixed to its bottom, the cyclone separator is fixedly connected to the support plate, and its bottom collection chamber is located below the support plate. This is used to fix and install the spiral guide fan and the cyclone separator.

[0011] As a preferred technical solution, a hydraulic cylinder is fixedly connected to the top of the support plate, and the piston rod of the hydraulic cylinder is fixedly connected to the air inlet pipe. This allows for height adjustment of the air inlet hood. This design can adjust the position of the air inlet hood in real time according to changes in the liquid level in the phosphorus receiving pool, always maintaining the optimal distance between the hood opening and the liquid surface.

[0012] As a preferred technical solution, the filter box has a hinged door with a handle on its front side, and a cover is installed on the top of the collection box. A waste liquid pipe is installed on the outer wall near the bottom, and a sealing valve is installed on the waste liquid pipe. The hinged door of the filter box and the removable cover of the collection box facilitate regular cleaning or replacement of the internal filter components (such as filter screens and adsorption frames) and absorbent liquid, reducing maintenance difficulty. The waste liquid pipe and sealing valve facilitate the discharge and replacement of waste liquid in the collection box, ensuring that the absorbent liquid always maintains an effective concentration and maintains the purification effect.

[0013] As a preferred technical solution, the filter box contains, from top to bottom, a filter screen, filter cotton, and an adsorption frame. A support block is fixedly installed inside the filter box to support the filter screen, filter cotton, and adsorption frame. The multi-stage filtration structure inside the filter box (from top to bottom: filter screen, filter cotton, adsorption frame) achieves gradient purification of the exhaust gas.

[0014] As a preferred technical solution, the filter screen has several meshes, and the mesh size gradually decreases from top to bottom. This decreasing mesh size design conforms to the principle of graded filtration of particulate matter.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes the negative pressure generated by a spiral guide fan to draw in the exhaust gas from the phosphorus collection tank. The gas is then transported to a cyclone separator via a U-shaped inlet pipe and corrugated pipe, where centrifugal force separates particulate impurities. The gas is further purified by a filter box, and finally, harmful components are absorbed by the absorbent liquid in the collection box, achieving multi-stage treatment of the exhaust gas. The vertically movable inlet hood adjusts its position according to changes in the phosphorus collection tank level, ensuring efficient collection of exhaust gas and preventing leakage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the filter box in this utility model;

[0019] Figure 3 In this utility model Figure 1 Enlarged view of point A in the image;

[0020] Figure 4 This is a schematic diagram of the spiral guide fan and cyclone separator in this utility model;

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Phosphorus receiving tank; 10. First support leg; 2. Spiral guide fan; 20. Corrugated pipe; 21. Inlet pipe; 22. Inlet hood; 23. Support column; 3. Cyclone separator; 30. First connecting pipe; 31. Collection bin; 4. Support plate; 40. Second support leg; 5. Hydraulic cylinder; 6. Filter box; 60. Box door; 61. Handle; 62. Second connecting pipe; 63. Lifting pump; 64. Adsorption frame; 65. Support block; 66. Filter screen; 67. Filter cotton; 7. Collection box; 70. Box cover; 71. Exhaust pipe; 72. Waste liquid pipe; 73. Sealing valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0024] Please refer to the accompanying drawings. This utility model provides a technical solution:

[0025] like Figure 1 As shown, a tail gas collection device for a phosphorus receiving pool 1 includes a spiral guide fan 2 connected to the phosphorus receiving pool 1. An air inlet hood 22 that can move up and down is provided inside the phosphorus receiving pool 1. A U-shaped air inlet pipe 21 is installed on the air inlet hood 22. A corrugated pipe 20 is installed at the end of the air inlet pipe 21 away from the air inlet hood 22. The corrugated pipe 20 is connected to the air inlet of the spiral guide fan 2. A cyclone separator 3 is connected to the air outlet of the spiral guide fan 2. A filter box 6 is connected to the air outlet of the cyclone separator 3 through a first connecting pipe 30. A collection box 7 is connected to the air outlet of the filter box 6 through a second connecting pipe 62. A booster pump 63 is installed on the second connecting pipe 62. The collection box 7 contains absorbent liquid, and an exhaust pipe 71 is provided on the top of the collection box 7. The device draws in the exhaust gas from the phosphorus receiving tank 1 through the negative pressure generated by the spiral guide fan 2, and then transports it to the cyclone separator 3 via the U-shaped air inlet pipe 21 and the corrugated pipe 20. Centrifugal force is used to separate particulate impurities. The gas is further purified by the filter box 6, and finally, harmful components are absorbed by the absorbent liquid in the collection box 7, achieving multi-stage treatment of the exhaust gas. The vertically movable air inlet hood 22 can adjust its position according to changes in the liquid level of the phosphorus receiving tank 1, ensuring efficient collection of exhaust gas and preventing leakage. The overall structure is compact, the treatment process is complete, and it significantly improves the purification efficiency and environmental friendliness of yellow phosphorus production exhaust gas.

[0026] like Figure 4 As shown, it should be added that the spiral guide fan 2 and the cyclone separator 3 are at a certain angle to ensure that the spiral guide fan 2 can blow air along the tangential direction of the cyclone separator 3.

[0027] like Figure 1 As shown, as a preferred technical solution, a first support leg 10 is fixedly connected to each of the four corners of the bottom of the phosphorus receiving pool 1, and the outer ring wall of the air intake hood 22 is tightly fitted with the inner ring wall of the phosphorus receiving pool 1. The first support leg 10 at the bottom of the phosphorus receiving pool 1 provides stable support, and the design of the air intake hood 22 being tightly fitted with the inner wall of the phosphorus receiving pool 1 effectively prevents exhaust gas from escaping from the gap between the hood and the pool wall, thus enhancing the sealing performance.

[0028] like Figure 1 As shown, in a preferred embodiment, a support plate 4 is also included. A second leg 40 is fixed at each of the four corners of the bottom of the support plate 4, and the bottom of the second leg 40 is flush with the bottom of the first leg 10. The support plate 4 and the second legs 40 are configured to provide an independent support platform for equipment such as the spiral guide fan 2 and the cyclone separator 3, so as to avoid the weight of the equipment directly acting on the phosphorus receiving tank 1 and to prevent the tank from deforming or being damaged.

[0029] like Figure 1 As shown, in a preferred embodiment, the spiral guide fan 2 is fixed to the top of the support plate 4 by a support column 23 fixed to its bottom. The cyclone separator is fixedly connected to the support plate 4, and its bottom collection chamber 31 is located below the support plate 4. This is used to fix the spiral guide fan and the cyclone separator in place.

[0030] like Figure 3 As shown, in a preferred embodiment, a hydraulic cylinder 5 is fixedly connected to the top of the support plate 4, and the piston rod of the hydraulic cylinder 5 is fixedly connected to the air inlet pipe 21. This allows for height adjustment of the air inlet hood 22. This design can adjust the position of the air inlet hood 22 in real time according to the changes in the liquid level in the phosphorus receiving pool 1, always maintaining the optimal distance between the hood opening and the liquid surface.

[0031] like Figure 1 As shown, in a preferred embodiment, the filter box 6 has a hinged door 60 on its front side, and a handle 61 is installed on the door 60. The collection box 7 has a cover 70 on its top, and a waste liquid pipe 72 is installed on its outer wall near the bottom. A sealing valve 73 is installed on the waste liquid pipe 72. The hinged door 60 of the filter box 6 and the removable cover 70 of the collection box 7 facilitate regular cleaning or replacement of the internal filter components (such as the filter screen 66 and the adsorption frame 64) and the absorbent liquid, reducing maintenance difficulty. The waste liquid pipe 72 and the sealing valve 73 facilitate the discharge and replacement of waste liquid in the collection box 7, ensuring that the absorbent liquid always maintains an effective concentration and maintains the purification effect.

[0032] like Figure 2As shown, in a preferred embodiment, the filter box 6 is provided with a filter screen 66, filter cotton 67, and adsorption frame 64 arranged sequentially from top to bottom inside. A support block 65 is fixedly installed inside the filter box 6 to support the filter screen 66, filter cotton 67, and adsorption frame 64. The multi-stage filtration structure inside the filter box 6 (filter screen 66, filter cotton 67, and adsorption frame 64 from top to bottom) achieves gradient purification of the exhaust gas.

[0033] like Figure 2 As shown, in this preferred embodiment, the filter screen 66 has several parts, and the pore size of the filter screen 66 gradually decreases from top to bottom. The decreasing pore size design of the filter screen 66 conforms to the principle of particulate matter grading filtration.

[0034] In operation, the exhaust gas collection device for the phosphorus receiving tank 1 utilizes a spiral guide fan 2 to generate negative pressure, causing the exhaust gas to pass through an adjustable inlet hood 22 that fits tightly against the inner wall of the phosphorus receiving tank 1, and then enter the system via a U-shaped inlet pipe 21 and a corrugated pipe 20. The exhaust gas first undergoes centrifugal separation of particulate impurities in a cyclone separator 3, and then enters a filter box 6 for deep purification through multiple layers of filter screens 66 with decreasing pore sizes, filter cotton 67, and an adsorption frame 64. The purified exhaust gas then enters a collection box 7 under the action of a booster pump 63, where residual harmful components are removed by the absorbent liquid before being discharged. The absorbent waste liquid can be replaced via a waste liquid pipe 72. The phosphorus receiving tank 1 and the equipment are supported by first and second legs 40 respectively, ensuring stable operation. The openable structure of each housing facilitates maintenance and ensures continuous and efficient operation of the device.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for collecting tail gas from a phosphorus receiving pool (1), characterized in that: The system includes a spiral guide fan (2) connected to a phosphorus receiving pool (1). A vertically movable air intake hood (22) is provided in the phosphorus receiving pool (1). A U-shaped air intake pipe (21) is installed on the air intake hood (22). A corrugated pipe (20) is installed at the end of the air intake pipe (21) away from the air intake hood (22). The corrugated pipe (20) is connected to the air inlet of the spiral guide fan (2). A cyclone separator (3) is connected to the air outlet of the spiral guide fan (2). A filter box (6) is connected to the air outlet of the cyclone separator (3) through a first connecting pipe (30). A collection box (7) is connected to the air outlet of the filter box (6) through a second connecting pipe (62). A booster pump (63) is installed on the second connecting pipe (62). An absorbent liquid is stored in the collection box (7). An exhaust pipe (71) is provided on the top of the collection box (7).

2. The tail gas collection device of the phosphorus receiving pool (1) as described in claim 1, characterized in that: Each of the four corners of the bottom of the phosphorus receiving pool (1) is fixedly connected to a first support leg (10), and the outer ring wall of the air inlet hood (22) is tightly fitted to the inner ring wall of the phosphorus receiving pool (1).

3. The tail gas collection device of the phosphorus receiving pool (1) as described in claim 2, characterized in that: It also includes a support plate (4), and a second leg (40) is fixed at each of the four corners of the bottom of the support plate (4). The bottom of the second leg (40) is flush with the bottom of the first leg (10).

4. The tail gas collection device of the phosphorus receiving pool (1) as described in claim 3, characterized in that: The spiral guide fan (2) is fixed to the top of the support plate (4) by a support column (23) fixed to its bottom. The cyclone separator (3) is fixedly connected to the support plate (4), and its bottom collection chamber (31) is located below the support plate (4).

5. The tail gas collection device for the phosphorus receiving pool (1) as described in claim 4, characterized in that: A hydraulic cylinder (5) is fixedly connected to the top of the support plate (4), and the piston rod of the hydraulic cylinder (5) is fixedly connected to the air inlet pipe (21).

6. The tail gas collection device for the phosphorus receiving pool (1) as described in claim 5, characterized in that: The filter box (6) has a door (60) hinged to the front and a handle (61) installed on the door (60). The collection box (7) has a cover (70) installed on the top and a waste liquid pipe (72) installed on its outer wall near the bottom. A sealing valve (73) is installed on the waste liquid pipe (72).

7. The tail gas collection device for the phosphorus receiving pool (1) as described in claim 6, characterized in that: The filter box (6) is provided with a filter screen (66), filter cotton (67) and adsorption frame (64) from top to bottom. A support block (65) is fixedly installed inside the filter box (6) to support the filter screen (66), filter cotton (67) and adsorption frame (64).

8. The tail gas collection device for the phosphorus receiving pool (1) as described in claim 7, characterized in that: The filter screen (66) has several parts, and the pore size of the filter screen (66) gradually decreases from top to bottom.

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