Equipment for recovering high-purity phosphorus steam

Abstract

The utility model discloses equipment for recovering high-purity phosphorus steam, which relates to the field of phosphorus steam recovery and comprises a first spray tower and a second spray tower, a phosphorus collecting tank is fixedly arranged at the bottom end of the first spray tower, and the second spray tower is fixedly arranged at the top end of the phosphorus collecting tank. The top ends of the first spray tower and the second spray tower are connected through a second phosphorus steam guide pipe, and a gas inlet pipe is fixedly arranged at the outer end of the first spray tower. The cooling water tank is used for pre-cooling phosphorus steam to the temperature close to the dew point temperature, the advantages of good atomization performance and good spraying effect of the spiral spraying head are utilized, and the characteristics that water mist is in full contact with gas countercurrent in the first spraying tower for cooling and is in direct-current constant-speed cooling with the gas in the second spraying tower are utilized; phosphorus steam is dissolved in the phosphorus collecting tank to the maximum extent, the recycling effect is good, and the equipment is simple in structure and small in occupied area.

Description

Technical Field

[0001] The utility model relates to the field of phosphorus vapor recovery, in particular to a device for recovering high-purity phosphorus vapor. Background Art

[0002] Yellow phosphorus is an important industrial raw material. It can be used as a raw material for manufacturing fertilizers and pesticides, and can also be used as a positive electrode material for lithium batteries. Yellow phosphorus is made from phosphate rock through electric furnace processing.

[0003] The so-called electric furnace method is to mix phosphate ore, coke and silica in a certain proportion, and then send them into a closed three-phase electric furnace for melting reduction at a high temperature of 1400-1500℃. In this process, the carbon in the coke reduces the calcium phosphate in the phosphate ore to elemental phosphorus, and the elemental phosphorus escapes in the form of yellow phosphorus vapor together with other gases.

[0004] However, in this process, the extracted phosphorus vapor contains a large amount of CO gas, S-containing gas and dust. The purity of yellow phosphorus vapor is low and it is easy to form mud phosphorus. Therefore, the later yellow phosphorus recovery equipment needs to be equipped with dust removal, multi-stage leaching, refining, desulfurization, mud phosphorus purification and other equipment. This kind of recovery equipment is large and complex, with high investment, low yellow phosphorus recovery rate, and is also easy to cause air pollution and pose safety hazards. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a device for recovering high-purity phosphorus vapor. The cooling water tank pre-cools the phosphorus vapor to near the dew point temperature. The advantages of the spiral spray head, such as good atomization and good spraying effect, and the characteristics of the water mist being fully contacted and cooled with the gas countercurrent inside the No. 1 spray tower and being uniformly cooled with the gas cocurrent inside the No. 2 spray tower are utilized. The phosphorus vapor is dissolved in the phosphorus collection tank to the greatest extent, and the recovery effect is good, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the utility model is: a device for recovering high-purity phosphorus vapor, comprising a No. 1 spray tower and a No. 2 spray tower, the bottom end of the No. 1 spray tower is fixedly provided with a phosphorus collecting tank, the No. 2 spray tower is fixedly arranged at the top of the phosphorus collecting tank, and the tops of the No. 1 spray tower and the No. 2 spray tower are connected through a No. 2 phosphorus vapor conduit;

[0007] An air inlet pipe is fixedly provided at the outer end of the No. 1 spray tower, the connection between the air inlet pipe and the No. 1 spray tower is located at the bottom of the No. 2 phosphorus vapor conduit, a venturi tube is fixedly provided at the top of the air inlet pipe, a No. 1 phosphorus vapor conduit is fixedly provided at the outer end of the venturi tube, and a cooling water tank capable of cooling the yellow phosphorus vapor is provided at one end of the No. 1 phosphorus vapor conduit;

[0008] A vertical pipe is fixedly provided at the top of the inner part of the No. 1 spray tower and the No. 2 spray tower, a plurality of branch pipes are fixedly provided at the outer end of the vertical pipe, a spiral spray head is fixedly provided at one end of the branch pipe, a flow partition is fixedly provided on the inner wall of the phosphorus collecting tank, the bottom ends of the No. 1 spray tower and the No. 2 spray tower extend into the phosphorus collecting tank and are located behind the flow partition, an exhaust pipe is fixedly provided at the top of the phosphorus collecting tank, and the exhaust pipe is located in front of the flow partition.

[0009] Furthermore, a No. 2 thermocouple is fixedly provided on the inner wall of the air inlet pipe, and a No. 1 thermocouple is fixedly provided on the inner wall of the No. 2 phosphorus vapor conduit, so as to measure the temperature of the yellow phosphorus vapor passing through these two places;

[0010] The inner walls of the No. 1 spray tower and the No. 2 spray tower are both fixedly provided with barrier rings, the cross section of which is a right-angle trapezoid, and a plurality of guide columns are fixedly provided inside the barrier rings, and the barrier rings can block water droplets on the inner walls of the No. 1 spray tower and the No. 2 spray tower, and make them converge to the guide columns and then drip;

[0011] The phosphorus collecting tank comprises a tank body, the top and bottom of the tank body are provided with detachable end plates, the No. 1 spray tower, the No. 2 spray tower and the exhaust pipe are all fixed on the top end plate, and the bottom end of the end plate at the bottom of the phosphorus collecting tank is fixed with a plurality of supporting legs.

[0012] Furthermore, the cooling water tank comprises a box body filled with cooling water, two flow pipes are fixedly provided on one side of the box body, and a water injection pipe with a sealing plug is fixedly provided on the top of the box body;

[0013] A curved pipe is provided inside the box, which extends the flow path of yellow phosphorus vapor inside the box. Both ends of the curved pipe extend to the top of the box. One end of the curved pipe is fixedly provided with a conduit connected to the yellow phosphorus furnace, and the other end of the curved pipe is fixedly connected to one end of the No. 1 phosphorus vapor conduit.

[0014] Furthermore, a circulating water tank is provided on one side of the phosphorus collecting tank away from the cooling water tank, an overflow pipe is provided inside the circulating water tank, one end of the overflow pipe is fixedly connected to the outer end of the phosphorus collecting tank and communicates with the inside of the phosphorus collecting tank, and the water inside the phosphorus collecting tank can flow into the circulating water tank through the overflow pipe;

[0015] A water guide pipe is fixedly arranged on one side of the circulating water tank away from the phosphorus collecting tank, and a circulating pump is fixedly arranged on the water guide pipe, and the circulating pump is used to drive the water to circulate.

[0016] Furthermore, an air cooling assembly is provided at one end of the water conduit, and the air cooling assembly includes an air cooling box, and one end of the water conduit extends into the interior of the air cooling box and is fixedly connected to the air cooling box;

[0017] A return pipe is provided inside the air cooling box, one end of which extends to the outside of the air cooling box and is fixedly connected to the air cooling box, a spiral pipe is provided between the return pipe and the water pipe, and both ends of the spiral pipe are fixedly connected to the return pipe and the water pipe respectively.

[0018] Furthermore, an air inlet is fixedly provided at the top of the air cooling box, and a fan is fixedly provided on the inner wall of the air inlet, and the fan is used to drive the air flow;

[0019] A plurality of exhaust holes are provided at the bottom of the air cooling box, and two cushion blocks are fixedly provided at the bottom of the air cooling box. The air entering the air cooling box is finally discharged to the outside through the exhaust holes.

[0020] Furthermore, one end of the reflux pipe extends to the top of the No. 1 spray tower and the No. 2 spray tower and is fixedly provided with a connecting channel. The top ends of the two vertical pipes respectively penetrate the No. 1 spray tower and the No. 2 spray tower and are fixedly connected to the bottom of the connecting channel, so that the water used for spraying circulates.

[0021] Furthermore, a vibration assembly is provided between the No. 1 spray tower and the No. 2 spray tower, and the vibration assembly includes a fixed beam, and the two ends of the fixed beam are respectively fixedly connected to the No. 1 spray tower and the No. 2 spray tower, and a motor is fixedly provided at the top of the fixed beam;

[0022] A fixed shaft is provided at the bottom end of the fixed beam through a rotating shaft, a top end of the fixed shaft penetrates the fixed beam and is fixedly connected to the output shaft of the motor, a plurality of connecting ropes are fixedly provided at the outer end of the fixed shaft, an impact ball is fixedly provided at one end of the connecting rope, a rubber layer with a buffering effect is fixedly provided at the outer end of the impact ball, the impact ball impacts the No. 1 spray tower and the No. 2 spray tower to make them vibrate during operation.

[0023] Compared with the prior art, the utility model provides a device for recovering high-purity phosphorus vapor, which has the following beneficial effects:

[0024] 1. Pre-cool phosphorus vapor to near the dew point temperature through a cooling water tank, and utilize the advantages of good atomization and good spraying effect of the spiral spray head, as well as the characteristics of water mist fully contacting and cooling with the gas countercurrent inside the No. 1 spray tower and cooling with the gas at a uniform speed inside the No. 2 spray tower, so that phosphorus vapor can be dissolved in the phosphorus collection tank to the greatest extent, with good recovery effect, and the equipment has a simple structure and small footprint.

[0025] 2. In this way, the phosphorus vapor has high purity during the recovery process, and is almost free of CO, dust, sulfur-containing gas and mud phosphorus. There is no need to equip dust removal and desulfurization equipment, which is more environmentally friendly. In addition, since no CO gas is generated, the high-purity yellow phosphorus vapor in the yellow phosphorus furnace can be extracted under positive pressure or slightly negative pressure, and there is no risk of cannon fire or even explosion due to negative pressure in the furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the overall structure diagram of the utility model;

[0027] Figure 2 This is the structural diagram of the No. 1 and No. 2 spray towers of the utility model;

[0028] Figure 3 This is a structural diagram of the vibration component of the utility model;

[0029] Figure 4 This is a cross-sectional view of the impact ball of the utility model;

[0030] Figure 5 This is the internal structure diagram of the No. 1 and No. 2 spray towers of the utility model;

[0031] Figure 6 This is a cross-sectional view of the air-cooling component of the utility model;

[0032] Figure 7 This is a structural diagram of the barrier ring of the utility model;

[0033] Figure 8 It is a top sectional view of the phosphorus collection tank of the utility model;

[0034] Fig. 9 This is a cross-sectional view of the air intake pipe of the utility model;

[0035] Fig.10 This is a diagram of the internal structure of the cooling water tank of the utility model.

[0036] In the figure: 1, spray tower No. 1; 2, spray tower No. 2; 3, vibration assembly; 301, fixed beam; 302, motor; 303, fixed shaft; 304, connecting rope; 305, rubber layer; 306, impact ball; 4, air intake pipe; 5, No. 1 phosphorus vapor conduit; 6, cooling water tank; 601, box body; 602, elbow; 7, phosphorus collection tank; 8, circulating water tank; 9, circulating pump;

[0037] 10. Air cooling assembly; 1001. Air cooling box; 1002. Spiral tube; 1003. Air inlet duct; 1004. Fan; 1005. Exhaust hole; 11. Return pipe; 12. Blocking ring; 13. Guide column; 14. Overflow pipe; 15. Exhaust pipe; 16. No. 2 phosphorus vapor duct; 17. Connecting channel; 18. Venturi tube; 19. Water guide pipe; 20. No. 1 thermocouple; 21. Vertical pipe; 22. Branch pipe; 23. Spiral sprinkler head; 24. No. 2 thermocouple; 25. Flow barrier. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention will be further described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figure 1-10 As shown, the utility model provides a device for recovering high-purity phosphorus vapor, including a No. 1 spray tower 1 and a No. 2 spray tower 2. The No. 1 spray tower 1 and the No. 2 spray tower 2 have the same size, both with a diameter of 159 mm and a height of 2500 mm. The bottom of the No. 1 spray tower 1 is fixedly provided with a phosphorus collecting tank 7, and the No. 2 spray tower 2 is fixedly provided at the top of the phosphorus collecting tank 7. The tops of the No. 1 spray tower 1 and the No. 2 spray tower 2 are connected through a No. 2 phosphorus vapor conduit 16, and the diameter of the No. 2 phosphorus vapor conduit 16 is 76 mm.

[0040] An air inlet pipe 4 is fixedly provided at the outer end of the No. 1 spray tower 1, and the diameter of the air inlet pipe 4 is 159 mm. The connection between the air inlet pipe 4 and the No. 1 spray tower 1 is located at the bottom of the No. 2 phosphorus vapor conduit 16. A venturi tube 18 is fixedly provided at the top of the air inlet pipe 4, and the diameter of the venturi tube 18 is 40 mm. A No. 1 phosphorus vapor conduit 5 is fixedly provided at the outer end of the venturi tube 18, and a cooling water tank 6 capable of cooling the yellow phosphorus vapor is provided at one end of the No. 1 phosphorus vapor conduit 5;

[0041] A vertical pipe 21 is fixedly provided at the top of the inner part of the No. 1 spray tower 1 and the No. 2 spray tower 2, and a plurality of branch pipes 22 are fixedly provided at the outer end of the vertical pipe 21. A spiral spray head 23 is fixedly provided at one end of the branch pipe 22. A flow partition 25 is fixedly provided on the inner wall of the phosphorus collecting tank 7. The bottom ends of the No. 1 spray tower 1 and the No. 2 spray tower 2 extend into the phosphorus collecting tank 7 and are located behind the flow partition 25. An exhaust pipe 15 is fixedly provided at the top of the phosphorus collecting tank 7. The exhaust pipe 15 is located in front of the flow partition 25. The diameter of the exhaust pipe 15 is 219 mm and the height is 3000 mm. In order to facilitate the display of the No. 1 spray tower 1 and the No. 2 spray tower 2, the exhaust pipe 15 is not fully displayed in the attached drawings.

[0042] The high-temperature phosphorus vapor in the yellow phosphorus furnace is first introduced into the cooling water tank 6, and the cooling water tank 6 is used to cool it down. The cooled phosphorus vapor is introduced into the venturi tube 18 through the No. 1 phosphorus vapor conduit 5, and then flows downward into the air inlet pipe 4. The venturi tube 18 can quickly draw high-purity phosphorus vapor into the spray tower to eliminate the fluctuation of phosphorus vapor and stabilize the furnace pressure. Then, it is introduced into the No. 1 spray tower 1 through the air inlet pipe 4. The phosphorus vapor flows from bottom to top in the No. 1 spray tower 1, and the spiral spray head 23 sprays out The water flows from top to bottom, and the two are mixed inside the No. 1 spray tower 1. The water can further cool the yellow phosphorus vapor. Then the yellow phosphorus vapor enters the No. 2 spray tower 2 through the No. 2 phosphorus vapor conduit 16, and is sprayed again inside the No. 2 spray tower 2 through the spiral spray head 23. During the two spraying processes, the yellow phosphorus falls downward into the phosphorus collecting tank 7 together with the spraying water, and is filtered by the flow partition 25 and discharged from the exhaust pipe 15. Finally, yellow phosphorus with a purity of 99.6% is collected inside the phosphorus collecting tank 7.

[0043] This method pre-cools the phosphorus vapor to near the dew point temperature through the cooling water tank 6, and utilizes the advantages of the good atomization and good spraying effect of the spiral spray head 23, as well as the characteristics that the water mist is fully contacted and cooled with the gas countercurrent inside the No. 1 spray tower 1, and is uniformly cooled with the gas cocurrent inside the No. 2 spray tower 2, so that the phosphorus vapor is dissolved in the phosphorus collection tank 7 to the greatest extent, and the recovery effect is good. The equipment has a simple structure and occupies a small area. At the same time, the phosphorus vapor has high purity and is almost free of CO, dust, sulfur-containing gas and mud phosphorus. There is no need to equip dust removal and desulfurization equipment. In addition, since no CO gas is generated, the high-purity yellow phosphorus vapor in the yellow phosphorus furnace can be extracted at positive pressure or slightly negative pressure, and there is no risk of cannon fire or even explosion due to the negative pressure in the furnace.

[0044] During the treatment process, the temperature of yellow phosphorus vapor needs to be monitored in real time, such as Figure 2 , 5 As shown in , 7 and 9, a No. 2 thermocouple 24 is fixedly provided on the inner wall of the air inlet pipe 4, and a No. 1 thermocouple 20 is fixedly provided on the inner wall of the No. 2 phosphorus vapor conduit 16, so as to measure the temperature of the yellow phosphorus vapor passing through these two places;

[0045] The inner walls of the No. 1 spray tower 1 and the No. 2 spray tower 2 are both fixedly provided with a barrier ring 12, the cross section of the barrier ring 12 is a right-angle trapezoid, and a plurality of guide columns 13 are fixedly provided inside the barrier ring 12. The barrier ring 12 can block water droplets on the inner walls of the No. 1 spray tower 1 and the No. 2 spray tower 2, and make them converge to the guide columns 13 and then drip;

[0046] The phosphorus collecting tank 7 comprises a tank body, and the top and bottom ends of the tank body are provided with detachable end plates, the No. 1 spray tower 1, the No. 2 spray tower 2 and the exhaust pipe 15 are all fixed on the top end plate, and the bottom end of the end plate at the bottom of the phosphorus collecting tank 7 is fixed with a plurality of supporting legs.

[0047] The temperature of the passing yellow phosphorus vapor is detected inside the air inlet pipe 4 and the No. 2 phosphorus vapor conduit 16, wherein the No. 2 thermocouple 24 monitors a temperature of 154°C, and the No. 1 thermocouple 20 monitors a temperature of 63°C. When water droplets adhere to the inner walls of the No. 1 spray tower 1 and the No. 2 spray tower 2 during the spraying process, the water droplets flow downward along the inner walls of the No. 1 spray tower 1 and the No. 2 spray tower 2, and when they flow to the barrier ring 12, they are blocked by the barrier ring 12 and flow along the inclined upper plane of the barrier ring 12 to the guide column 13, and finally gather and drip at the guide column 13, so as to prevent the water droplets from continuing to flow slowly along the inner walls of the No. 1 spray tower 1 and the No. 2 spray tower 2, thereby shortening the dripping time of the water droplets and improving the efficiency of the spray water falling into the phosphorus collection tank 7.

[0048] Before spraying, the yellow phosphorus vapor needs to be cooled to near the dew point. Figure 1 , 10 As shown, the cooling water tank 6 comprises a box body 601 filled with cooling water, two flow pipes are fixedly provided on one side of the box body 601, and a water injection pipe with a sealing plug is fixedly provided on the top of the box body 601;

[0049] The box 601 is provided with an elbow 602 inside, which prolongs the path of the yellow phosphorus vapor flowing inside the box 601. Both ends of the elbow 602 extend to the top of the box 601. One end of the elbow 602 is fixed with a conduit connected to the yellow phosphorus furnace. The phosphorus vapor discharged from the yellow phosphorus furnace enters the cooling water tank 6. The flow rate of the high-purity phosphorus vapor from the yellow phosphorus furnace is 2.5m 3 / h, the temperature is 780°C, the purity is 99%, and the other end of the bent pipe 602 is fixedly connected to one end of the No. 1 phosphorus vapor conduit 5.

[0050] The high-temperature yellow phosphorus vapor in the yellow phosphorus furnace enters the elbow 602 through the conduit, and the elbow 602 is located inside the box 601 and submerged in cooling water. When the yellow phosphorus vapor flows inside the elbow 602, it is cooled by the cooling water and then enters the Venturi tube 18 through the No. 1 phosphorus vapor conduit 5. The two flow pipes respectively input and discharge cooling water into the box 601 to avoid excessively high water temperature inside the box 601 and reduce the cooling efficiency.

[0051] The spray water can circulate, such as Figure 1 , 2 As shown in FIG. 8 , a circulating water tank 8 is provided on the side of the phosphorus collecting tank 7 away from the cooling water tank 6, and an overflow pipe 14 is provided inside the circulating water tank 8. One end of the overflow pipe 14 is fixedly connected to the outer end of the phosphorus collecting tank 7 and communicates with the inside of the phosphorus collecting tank 7. The water inside the phosphorus collecting tank 7 can flow into the circulating water tank 8 through the overflow pipe 14.

[0052] A water pipe 19 is fixedly provided on the side of the circulating water tank 8 away from the phosphorus collecting tank 7. The flow rate of the water pipe 19 is 12.5 m 3 / h, the lift is 20m, and a circulating pump 9 is fixedly provided on the water pipe 19, and the circulating pump 9 is used to drive the water to circulate.

[0053] After spraying, the water inside the No. 1 spray tower 1 and the No. 2 spray tower 2 falls into the phosphorus collecting tank 7. As the water level rises, the water inside the phosphorus collecting tank 7 will enter the circulating water tank 8 through the overflow pipe 14, and the water entering the circulating water tank 8 will circulate under the drive of the circulating pump 9 and spray again.

[0054] Before the circulation spraying, the water inside the circulation water tank 8 needs to be fully cooled. Figure 1 , 2 As shown in , 6, one end of the water pipe 19 is provided with an air cooling assembly 10, and the air cooling assembly 10 includes an air cooling box 1001, and one end of the water pipe 19 extends into the air cooling box 1001 and is fixedly connected to the air cooling box 1001;

[0055] A return pipe 11 is provided inside the air cooling box 1001, one end of which extends to the outside of the air cooling box 1001 and is fixedly connected to the air cooling box 1001. A spiral tube 1002 is provided between the return pipe 11 and the water pipe 19, and both ends of the spiral tube 1002 are fixedly connected to the return pipe 11 and the water pipe 19 respectively.

[0056] An air inlet 1003 is fixedly arranged at the top of the air cooling box 1001, and a fan 1004 is fixedly arranged on the inner wall of the air inlet 1003, and the fan 1004 is used to drive the air flow;

[0057] A plurality of exhaust holes 1005 are provided at the bottom of the air cooling box 1001 . Two cushion blocks are fixedly provided at the bottom of the air cooling box 1001 . The air entering the air cooling box 1001 is finally discharged to the outside through the exhaust holes 1005 .

[0058] One end of the reflux pipe 11 extends to the top of the No. 1 spray tower 1 and the No. 2 spray tower 2 and is fixedly provided with a connecting channel 17. The top ends of the two vertical pipes 21 respectively penetrate the No. 1 spray tower 1 and the No. 2 spray tower 2 and are fixedly connected to the bottom end of the connecting channel 17, so that the water used for spraying circulates.

[0059] The water in the circulating water tank 8 is input into the air-cooled box 1001 through the water pipe 19, flows into the return pipe 11 through the spiral tube 1002, flows into the connecting channel 17 through the return pipe 11, and finally returns to the No. 1 spray tower 1 and the No. 2 spray tower 2 through the two vertical pipes 21. Before the water enters the return pipe 11, the spiral tube 1002 extends the flow path of the water. In the process of passing through the spiral tube 1002, the fan 1004 drives the air to flow and blow toward the spiral tube 1002, so as to fully cool the water. The air blown into the air-cooled box 1001 finally carries the heat and is discharged through the exhaust hole 1005. The cooled water can cool the phosphorus vapor more effectively during the circulating spraying.

[0060] In order to prevent water droplets from adhering to the inner walls of spray tower No. 1 and spray tower No. 2 during the spraying process, Figure 1-4 As shown, a vibration assembly 3 is provided between the No. 1 spray tower 1 and the No. 2 spray tower 2, and the vibration assembly 3 includes a fixed beam 301, and both ends of the fixed beam 301 are fixedly connected to the No. 1 spray tower 1 and the No. 2 spray tower 2, respectively, and a motor 302 is fixedly provided on the top of the fixed beam 301;

[0061] A fixed shaft 303 is provided at the bottom end of the fixed beam 301 through a rotating shaft, and the top end of the fixed shaft 303 penetrates the fixed beam 301 and is fixedly connected to the output shaft of the motor 302, and a plurality of connecting ropes 304 are fixedly provided at the outer end of the fixed shaft 303, and an impact ball 306 is fixedly provided at one end of the connecting rope 304, and a rubber layer 305 with a buffering effect is fixedly provided at the outer end of the impact ball 306, so that the impact ball 306 impacts the No. 1 spray tower 1 and the No. 2 spray tower 2 to make them vibrate during the working process.

[0062] The fixed shaft 303 is driven to rotate by the motor 302, and the connecting rope 304 and the rubber layer 305 rotate accordingly during the rotation, and the rubber layer 305 collides with the outer ends of the No. 1 spray tower 1 and the No. 2 spray tower 2, which causes the No. 1 spray tower 1 and the No. 2 spray tower 2 to vibrate. The vibration can accelerate the falling speed of water droplets on the inner walls of the No. 1 spray tower 1 and the No. 2 spray tower 2 to avoid long-term adhesion of water droplets.

[0063] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A device for recovering high-purity phosphorus vapor, comprising a first spray tower (1) and a second spray tower (2), characterized in that: A phosphorus collecting tank (7) is fixedly provided at the bottom of the No. 1 spray tower (1), and the No. 2 spray tower (2) is fixedly provided at the top of the phosphorus collecting tank (7). The tops of the No. 1 spray tower (1) and the No. 2 spray tower (2) are connected via a No. 2 phosphorus vapor conduit (16); An air inlet pipe (4) is fixedly provided at the outer end of the No. 1 spray tower (1); the connection between the air inlet pipe (4) and the No. 1 spray tower (1) is located at the bottom of the No. 2 phosphorus vapor conduit (16); a venturi tube (18) is fixedly provided at the top of the air inlet pipe (4); a No. 1 phosphorus vapor conduit (5) is fixedly provided at the outer end of the venturi tube (18); and a cooling water tank (6) capable of cooling the yellow phosphorus vapor is provided at one end of the No. 1 phosphorus vapor conduit (5); A vertical pipe (21) is fixedly provided at the top of the interior of the No. 1 spray tower (1) and the No. 2 spray tower (2); a plurality of branch pipes (22) are fixedly provided at the outer end of the vertical pipe (21); a spiral spray head (23) is fixedly provided at one end of the branch pipe (22); a flow partition (25) is fixedly provided on the inner wall of the phosphorus collecting tank (7); the bottom ends of the No. 1 spray tower (1) and the No. 2 spray tower (2) extend into the interior of the phosphorus collecting tank (7) and are located behind the flow partition (25); an exhaust pipe (15) is fixedly provided at the top of the phosphorus collecting tank (7); and the exhaust pipe (15) is located in front of the flow partition (25).

2. The device for recovering high-purity phosphorus vapor according to claim 1, characterized in that: A No. 2 thermocouple (24) is fixedly provided on the inner wall of the air inlet pipe (4), and a No. 1 thermocouple (20) is fixedly provided on the inner wall of the No. 2 phosphorus vapor conduit (16); A barrier ring (12) is fixedly provided on the inner wall of the first spray tower (1) and the second spray tower (2); the cross section of the barrier ring (12) is a right-angle trapezoid; and a plurality of guide columns (13) are fixedly provided on the inner side of the barrier ring (12); The phosphorus collecting tank (7) comprises a tank body, the top and bottom of the tank body are both provided with detachable end plates, the No. 1 spray tower (1), the No. 2 spray tower (2) and the exhaust pipe (15) are all fixed on the top end plate, and a plurality of supporting legs are fixed on the bottom end of the end plate at the bottom of the phosphorus collecting tank (7).

3. The device for recovering high-purity phosphorus vapor according to claim 1, characterized in that: The cooling water tank (6) comprises a box body (601) filled with cooling water, two flow pipes are fixedly provided on one side of the box body (601), and a water injection pipe with a sealing plug is fixedly provided on the top of the box body (601); A curved pipe (602) is provided inside the box (601), both ends of the curved pipe (602) extend to the top of the box (601), one end of the curved pipe (602) is fixedly provided with a conduit connected to the yellow phosphorus furnace, and the other end of the curved pipe (602) is fixedly connected to one end of the No. 1 phosphorus vapor conduit (5).

4. The device for recovering high-purity phosphorus vapor according to claim 1, characterized in that: A circulating water tank (8) is provided on the side of the phosphorus collecting tank (7) away from the cooling water tank (6), an overflow pipe (14) is provided inside the circulating water tank (8), one end of the overflow pipe (14) is fixedly connected to the outer end of the phosphorus collecting tank (7) and communicates with the inside of the phosphorus collecting tank (7); A water guide pipe (19) is fixedly provided on the side of the circulating water tank (8) away from the phosphorus collecting tank (7), and a circulating pump (9) is fixedly provided on the water guide pipe (19).

5. The device for recovering high-purity phosphorus vapor according to claim 4, characterized in that: An air cooling assembly (10) is provided at one end of the water guide pipe (19), the air cooling assembly (10) comprises an air cooling box (1001), and one end of the water guide pipe (19) extends into the interior of the air cooling box (1001) and is fixedly connected to the air cooling box (1001); A return pipe (11) is provided inside the air cooling box (1001), one end of the return pipe (11) extends to the outside of the air cooling box (1001) and is fixedly connected to the air cooling box (1001), a spiral tube (1002) is provided between the return pipe (11) and the water conduit (19), and two ends of the spiral tube (1002) are respectively fixedly connected to the return pipe (11) and the water conduit (19).

6. The device for recovering high-purity phosphorus vapor according to claim 5, characterized in that: An air inlet duct (1003) is fixedly provided at the top of the air cooling box (1001), and a fan (1004) is fixedly provided on the inner wall of the air inlet duct (1003); A plurality of exhaust holes (1005) are provided at the bottom end of the air cooling box (1001), and two cushion blocks are fixedly provided at the bottom end of the air cooling box (1001).

7. The device for recovering high-purity phosphorus vapor according to claim 5, characterized in that: One end of the reflux pipe (11) extends to the top of the No. 1 spray tower (1) and the No. 2 spray tower (2) and is fixedly provided with a connecting channel (17); the top ends of the two vertical pipes (21) respectively penetrate the No. 1 spray tower (1) and the No. 2 spray tower (2) and are fixedly connected to the bottom end of the connecting channel (17).

8. The device for recovering high-purity phosphorus vapor according to claim 1, characterized in that: A vibration assembly (3) is provided between the first spray tower (1) and the second spray tower (2), the vibration assembly (3) comprising a fixed beam (301), two ends of the fixed beam (301) are respectively fixedly connected to the first spray tower (1) and the second spray tower (2), and a motor (302) is fixedly provided at the top of the fixed beam (301); A fixed shaft (303) is provided at the bottom end of the fixed beam (301) via a rotating shaft, and a top end of the fixed shaft (303) passes through the fixed beam (301) and is fixedly connected to an output shaft of a motor (302). A plurality of connecting ropes (304) are fixedly provided at the outer end of the fixed shaft (303), and an impact ball (306) is fixedly provided at one end of the connecting rope (304), and a rubber layer (305) having a buffering effect is fixedly provided at the outer end of the impact ball (306).

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