Yellow phosphorus tail gas purification device

Abstract

The yellow phosphorus tail gas purification device comprises a spray tower body, a filtering structure, a water supply structure and a backwashing structure, the filtering structure is arranged below the spray tower body and comprises a water storage tank, a filtering cylinder rotationally installed on the inner wall of the water storage tank and a driving assembly arranged on the surface of the water storage tank and capable of driving the filtering cylinder to rotate. By arranging the filtering structure and the water supply structure, after the yellow phosphorus tail gas is purified by the spraying tower body, a solution and impurities generated after reaction can be conveyed into the filtering cylinder along the water supply structure, then the driving assembly is used for driving the filtering cylinder to rotate, and after the rotating filtering cylinder is in contact with the solution, the impurities can be filtered in the filtering cylinder; the filtered solution passes through the filter cartridge, enters the water storage tank and is discharged out of the water storage tank along the water guide pipe for cyclic utilization, so that the traditional precipitation mode for treating the solution is broken through, and the filter cartridge is used for filtering the solution, so that impurities can be efficiently intercepted, and the circulating solution is cleaner.

Description

Technical Field

[0001] The utility model relates to the field of tail gas treatment, in particular to a yellow phosphorus tail gas purification device. Background Technique

[0002] For the existing treatment methods of yellow phosphorus tail gas purification, generally a combined treatment method of water washing and alkali washing is adopted, and the alkali washing tower is an important alkali washing treatment equipment among them.

[0003] Chinese authorized publication number CN216778440U discloses a yellow phosphorus tail gas purification device. It solves the environmental protection treatment of yellow phosphorus tail gas purification. The yellow phosphorus tail gas purification device includes a circulation pool, a pipeline with a circulation pump, a primary purification tank, a secondary purification tank and a final purification tank. A semi-cylindrical arc-shaped groove is provided at the bottom of the tank body, and a screw conveyor is arranged in the arc-shaped groove; a tail gas inlet pipe is provided at the bottom of the primary purification tank. After the inlet pipe extends to the middle position and bends upward, an umbrella-shaped baffle is provided at the top of the inlet pipe. A baffle plate is provided in the upper middle part of the primary purification tank. A upper connecting pipe is provided at the top of the primary purification tank and communicated with the top of the secondary purification tank. Two groups of baffle plates are arranged in parallel in the secondary purification tank. A lower connecting pipe is provided at the bottom of the secondary purification tank and connected to the inside of the final purification tank. An air outlet pipe is provided at the bottom of the final purification tank; the water pipe at the bottom of the tank body flows back to the small pool, and the pipeline of the circulation pump extends into the large pool. The tail gas spraying time is longer, and the sludge at the bottom of the tank body is easier to clean.

[0004] However, the device still has the following defects when in use: The device returns the alkali water below the purification tank to the circulation pool through the water pipe. The impurities in the yellow phosphorus tail gas are sprayed to the bottom of the purification tank and then discharged from the alkali washing tower regularly through the screw conveyor. Although it makes the sludge at the bottom of the tank body easier to clean, some suspended impurities in the water will still enter the circulation pool along with the water pipe, and the impurities in the water cannot be completely removed. In view of the above defects: For this reason, we propose a yellow phosphorus tail gas purification device. Content of the Utility Model

[0005] The purpose of the utility model is to solve the defect that some suspended impurities in the water in the prior art will still enter the circulation pool along with the water pipe, and the impurities in the water cannot be completely removed, and to propose a yellow phosphorus tail gas purification device.

[0006] In order to solve the problems existing in the prior art, the utility model adopts the following technical scheme: A yellow phosphorus tail gas purification device includes:

[0007] A spray tower body,

[0008] A filtering structure, the filtering structure is arranged below the spray tower body, and it includes a water storage tank, a filtering cylinder rotatably installed on the inner wall of the water storage tank, and a driving component arranged on the surface of the water storage tank and capable of driving the filtering cylinder to rotate;

[0009] A water supply structure is arranged between the spray tower body and the filter cartridge, and is used to transport the reaction liquid in the spray tower body to the inside of the filter cartridge;

[0010] A backwashing structure is arranged above the water storage tank and is used to backwash the filter cartridge;

[0011] The driving assembly includes a gear ring, a motor fixedly installed on the right side of the water storage tank, and a spur gear fixedly installed on the output end of the motor. The right end of the filter cartridge extends to the outside of the water storage tank and is fixedly connected to the inner ring surface of the gear ring.

[0012] Preferably, the water supply structure includes a drain pipe fixedly installed at the bottom of the spray tower body and a water delivery pipe fixedly installed at one end of the drain pipe.

[0013] Preferably, the water delivery pipe is L-shaped and extends into the filter cartridge.

[0014] Preferably, the spur gear is in meshing transmission with the gear ring.

[0015] Preferably, the backwashing structure includes a cover plate fixedly installed on the upper surface of the water storage tank by bolts, a washing pipe fixedly installed on the lower surface of the cover plate, and a collection box fixedly installed on the lower surface of the cover plate through a support frame.

[0016] Preferably, the collection box is inside the filter cartridge, and the washing pipe is directly above the collection box.

[0017] Preferably, the surface of the support frame is provided with sewage discharge holes, and the sewage discharge holes extend into the collection box.

[0018] Preferably, a liquid level sensor is fixedly installed at one end of the drain pipe.

[0019] Preferably, a drain pipe is arranged on the surface of the water storage tank.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1. By setting a filtering structure and a water supply structure, after the spray tower body purifies yellow phosphorus tail gas, the solution and impurities generated after the reaction will be transported to the inside of the filter cartridge along the water supply structure. Then, the driving assembly is used to drive the filter cartridge to rotate. After the rotating filter cartridge contacts the solution, the impurities can be filtered inside the filter cartridge. The filtered solution will pass through the filter cartridge and enter the water storage tank, and then be discharged from the water storage tank along the water guide pipe for recycling. This breaks the traditional precipitation method for treating the solution and uses a filter cartridge to filter the solution, thereby efficiently intercepting impurities and making the circulating solution cleaner.

[0022] 2. By setting up a backwashing structure, when the filter cartridge is blocked by impurities after long-term filtration, the water in the filter cartridge cannot be discharged at this time. As the water level in the filter cartridge rises to the position of the liquid level sensor, the liquid level sensor can drive the flushing pipe to work. The high-pressure flushing water sprayed by the flushing pipe can scour the outer wall of the filter cartridge, so that the impurities attached to the surface of the filter cartridge can be removed. Moreover, the scoured impurities will fall into the collection box and be discharged from the filter cartridge interior along the sewage discharge hole, thus avoiding the blockage of the filter cartridge after long-term operation. Brief Description of the Drawings

[0023] The drawings described herein are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation. In the drawings:

[0024] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0025] Figure 2 is a front cross-sectional schematic diagram of the water storage tank of the present invention;

[0026] Figure 3 is a side cross-sectional schematic diagram of the water storage tank of the present invention;

[0027] Figure 4 is a three-dimensional schematic diagram of the drive assembly of the present invention;

[0028] Figure 5 is Figure 1 the enlarged schematic diagram at A in

[0029] The reference numerals in the drawings: 1 spray tower body, 2 water storage tank, 3 filter cartridge, 4 gear ring, 5 motor, 6 spur gear, 7 drain pipe, 8 water delivery pipe, 9 cover plate, 10 flushing pipe, 11 support frame, 12 collection box, 13 sewage discharge hole, 14 liquid level sensor, 15 water guide pipe. Detailed Embodiment

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention.

[0031] Please refer to Figures 1-5 , the present invention provides a technical solution: a yellow phosphorus tail gas purification device, including: a spray tower body 1, a filtration structure, a water supply structure, and a backwashing structure. The spray tower body 1 can spray and purify the yellow phosphorus tail gas.

[0032] The filtration structure is arranged below the spray tower body 1, and it includes a water storage tank 2, a filter cartridge 3 rotatably installed on the inner wall of the water storage tank 2, and a drive assembly arranged on the surface of the water storage tank 2 to drive the filter cartridge 3 to rotate. A water guide pipe 15 is also arranged on the surface of the water storage tank 2, and the water guide pipe 15 is connected to an external water circulation system.

[0033] The driving assembly includes a gear ring 4, a motor 5 fixedly installed on the right side of the water storage tank 2, and a spur gear 6 fixedly installed at the output end of the motor 5. The right end of the filter cartridge 3 extends to the outside of the water storage tank 2 and is fixedly connected to the inner ring surface of the gear ring 4. The spur gear 6 is in meshing transmission with the gear ring 4. Driving the motor 5 can drive the spur gear 6 to rotate. By using the meshing transmission between the spur gear 6 and the gear ring 4, the filter cartridge 3 can be driven to rotate.

[0034] The water supply structure is arranged between the spray tower body 1 and the filter cartridge 3 and is used to transport the reaction liquid in the spray tower body 1 into the filter cartridge 3. The water supply structure includes a drain pipe 7 fixedly installed at the bottom of the spray tower body 1 and a water delivery pipe 8 fixedly installed at one end of the drain pipe 7. The shape of the water delivery pipe 8 is set to be L-shaped, and the water delivery pipe 8 extends into the filter cartridge 3.

[0035] After the spray tower body 1 purifies the yellow phosphorus tail gas, the solution and impurities generated after the reaction will be transported into the filter cartridge 3 along the drain pipe 7 and the water delivery pipe 8. Then, the driving assembly is used to drive the filter cartridge 3 to rotate. After the rotating filter cartridge 3 contacts the solution, the impurities can be filtered inside the filter cartridge 3. The filtered solution will pass through the filter cartridge 3 and enter the water storage tank 2, and then be discharged from the water storage tank 2 along the water guide pipe 15 for recycling. It breaks the traditional way of treating the solution by precipitation and uses the filter cartridge 3 to filter the solution, so as to intercept the impurities efficiently and make the circulating solution cleaner.

[0036] The backwashing structure is arranged above the water storage tank 2 and is used to backwash the filter cartridge 3. The backwashing structure includes a cover plate 9 fixedly installed on the upper surface of the water storage tank 2 by bolts, a washing pipe 10 fixedly installed on the lower surface of the cover plate 9, and a collection frame 12 fixedly installed on the lower surface of the cover plate 9 through a support frame 11. The collection frame 12 is inside the filter cartridge 3, and the washing pipe 10 is directly above the collection frame 12. The surface of the support frame 11 is provided with a sewage discharge hole 13, and the sewage discharge hole 13 extends into the collection frame 12. The other end of the washing pipe 10 is connected to an external water supply system.

[0037] A liquid level sensor 14 is fixedly installed at one end of the drain pipe 7, and the liquid level sensor 14 can control the opening and closing of the external water supply system. When the filter cartridge 3 is blocked by impurities after long-term filtration, the water in the filter cartridge 3 cannot be discharged at this time. As the water level in the filter cartridge 3 rises to the position of the liquid level sensor 14, the liquid level sensor 14 can drive the washing pipe 10 to work. The high-pressure washing water sprayed by the washing pipe 10 can scour the outer wall of the filter cartridge 3, so as to remove the impurities attached to the surface of the filter cartridge 3. Moreover, the scoured impurities will fall into the collection frame 12 and be discharged from the inside of the filter cartridge 3 along the sewage discharge hole 13, thus avoiding the blockage of the filter cartridge 3 after long-term operation.

[0038] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art who makes equivalent substitutions or changes according to the technical solution and its concept of the present utility model shall be covered by the protection scope of the present utility model.

Claims

1. Yellow phosphorus tail gas purification device, characterized in that, include: A spray tower body (1), a filtering structure, wherein the filtering structure is arranged below the spray tower body (1), and comprises a water storage tank (2), a filtering cartridge (3) rotatably mounted on the inner wall of the water storage tank (2), and a driving component arranged on the surface of the water storage tank (2) and capable of driving the filtering cartridge (3) to rotate; a water supply structure, the water supply structure being arranged between the spray tower body (1) and the filter cartridge (3) and being used for conveying the reaction liquid in the spray tower body (1) to the interior of the filter cartridge (3); A backwashing structure, the backwashing structure being arranged above the water storage tank (2) and being used for backwashing the filter cartridge (3); The driving assembly comprises a gear ring (4), a motor (5) fixedly mounted on the right side of the water storage tank (2), and a spur gear (6) fixedly mounted on the output end of the motor (5); the right end of the filter cartridge (3) extends to the outside of the water storage tank (2) and is fixedly connected to the inner ring surface of the gear ring (4).

2. The yellow phosphorus tail gas purification device according to claim 1, characterized in that: The water supply structure comprises a drainage pipe (7) fixedly mounted at the bottom of the spray tower body (1), and a water delivery pipe (8) fixedly mounted at one end of the drainage pipe (7).

3. The yellow phosphorus tail gas purification device according to claim 2, characterized in that: The shape of the water delivery pipe (8) is set to be L-shaped, and the water delivery pipe (8) extends to the interior of the filter cartridge (3).

4. The yellow phosphorus tail gas purification device according to claim 1, characterized in that: The spur gear (6) is meshed with the gear ring (4) for transmission.

5. The yellow phosphorus tail gas purification device according to claim 1, characterized in that: The backwashing structure comprises a cover plate (9) fixedly mounted on the upper surface of the water storage tank (2) by means of bolts, a flushing pipe (10) fixedly mounted on the lower surface of the cover plate (9), and a collection frame (12) fixedly mounted on the lower surface of the cover plate (9) by means of a support frame (11).

6. The yellow phosphorus tail gas purification device according to claim 5, characterized in that: The collecting frame (12) is located inside the filter cartridge (3), and the flushing pipe (10) is located directly above the collecting frame (12).

7. The yellow phosphorus tail gas purification device according to claim 5, characterized in that: A drainage hole (13) is provided on the surface of the support frame (11), and the drainage hole (13) extends to the interior of the collection frame (12).

8. The yellow phosphorus tail gas purification device according to claim 2, characterized in that: A liquid level sensor (14) is fixedly mounted on one end of the drainage pipe (7).

9. The yellow phosphorus tail gas purification device according to claim 1, characterized in that: A drainage pipe (15) is provided on the surface of the water storage tank (2).

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