Treatment device and method for treating high-concentration ammonium nitrate wastewater

Abstract

The invention relates to the technical field of wastewater treatment, and discloses a treatment device and method for treating high-concentration ammonium nitrate wastewater. The liquid guide mechanism is arranged in the evaporation tank, and the liquid guide mechanism drives the concentrated solution at the bottom of the evaporation tank to rise and guide the concentrated solution to the surface of the inner wall of the evaporation tank to fall through a moving disc, a communicating hole and a guide plate in the liquid guide mechanism; by arranging the liquid guide mechanism, after waste liquid in the evaporation tank falls to the bottom of the evaporation tank, the movable disc is driven to ascend and descend through transmission of the lead screw, in the ascending process of the movable disc, part of the waste liquid is driven by the movable disc to ascend, and then the waste liquid on the movable disc flows to a guide plate through communicating holes; and the liquid falls down along the inner wall surface of the evaporation tank, so that the flowability of the waste liquid is improved, the waste liquid can be in better contact with the inner wall of the evaporation tank, the evaporation speed is increased, and the evaporation and concentration efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and specifically to a treatment device and method for treating high-concentration ammonium nitrate wastewater. Background Technique

[0002] Ammonium nitrate is the nitrate of the ammonium cation, usually a white crystalline solid, highly soluble in water, prone to hygroscopic caking, and absorbs a large amount of heat when dissolved. A large amount of high-concentration ammonium nitrate wastewater is generated during the production of chemical fertilizers. Evaporation and concentration can effectively treat high-concentration ammonium nitrate wastewater. After evaporation and concentration, the vapor and concentrated liquid are transported to a crystallizer for further crystallization treatment. Currently, when evaporating and concentrating high-concentration ammonium nitrate wastewater, after the wastewater enters the evaporator, it is preheated through heating tubes and then accumulates at the bottom of the evaporator for heating and evaporation. The waste liquid has poor fluidity, which affects the evaporation efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a treatment device and method for treating high-concentration ammonium nitrate wastewater to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A treatment device and method for treating high-concentration ammonium nitrate wastewater, including an evaporation tank and a separator; A liquid guiding mechanism, which is arranged inside the evaporation tank. The liquid guiding mechanism drives the concentrated liquid at the bottom of the evaporation tank to rise and guides it to fall on the inner wall surface of the evaporation tank through the moving disk, communication holes, and guiding plate therein; A dredging mechanism, which is arranged inside the evaporation tank. The dredging mechanism dredges the communication holes on the moving disk through the sealing cover therein.

[0005] Optionally, the liquid guiding mechanism includes a lead screw, a limiting rod, a moving disk, a plurality of communication holes, a plurality of connecting pieces, a guiding plate, a guiding groove, a first connecting plate, and a second connecting plate. The lead screw and the limiting rod are fixedly installed at the bottom end of the inner wall of the evaporation tank. A plurality of the connecting pieces are integrally formed at the bottom end of the moving disk. A plurality of the communication holes are opened at the top of the moving disk, and the other end of the communication hole extends to one end of the corresponding connecting piece. The guiding plate is fixedly installed at one end of the connecting piece. The guiding groove is opened at the top of the connecting piece. The first connecting plate and the second connecting plate are respectively fixedly installed on both sides of the outer wall of the moving disk. The first connecting plate is threadedly connected to the outer wall of the lead screw through the threaded hole thereon. The second connecting plate is slidably installed on the outer wall of the limiting rod through the through hole thereon.

[0006] Optionally, the outlet direction of the communication hole corresponds to the guiding groove on the corresponding guiding plate, and one end of the guiding plate extends to the inner wall surface of the evaporation tank.

[0007] Optionally, a heat insulation frame is fixedly installed on the outer wall of the evaporation tank. One side of the heat insulation frame is fixedly installed with a mounting frame. One side of the mounting frame is fixedly installed with a motor. The output end of the motor extends to the inside of the mounting frame. The output end of the motor is fixedly installed with a first turntable. One side of the bottom of the inner wall of the mounting frame is rotatably installed with a mounting rod. A second turntable is fixedly installed on the outer wall of the mounting rod. A transmission belt is installed between the first turntable and the second turntable.

[0008] Optionally, a mechanical seal is fixedly installed at the bottom end of the other side of the heat insulation frame. The mechanical seal extends to the inside of the evaporation tank. One end of the mounting rod is installed on the mechanical seal, and one end of the mounting rod passes through the mechanical seal and extends to the inside of the evaporation tank. One end of the mounting rod extending to the inside of the evaporation tank is fixedly installed with a second bevel gear.

[0009] Optionally, a first bevel gear is fixedly installed at the top end of the outer wall of the lead screw. The first bevel gear meshes with the second bevel gear. A rotating seat is fixedly installed on the inner wall of the evaporation tank. The top end of the lead screw is rotatably installed on the rotating seat.

[0010] Optionally, the dredging mechanism includes an air delivery frame and a sealing cover. The air delivery frame is fixedly installed on one side of the inner wall of the evaporation tank. One end of the air delivery frame extends to the outside of the evaporation tank. One end of the air delivery frame extending to the outside of the evaporation tank is connected with a high-pressure air pump through an air delivery pipeline. The sealing cover is fixedly installed at the other end of the air delivery frame, and the sealing cover is clamped with the top of the moving disk.

[0011] Optionally, a waste water inlet is fixedly installed at the top end of the evaporation tank. The bottom end of the waste water inlet extends to the inside of the evaporation tank. A water distribution plate is fixedly installed at the bottom end of the waste water inlet. A fixing frame is fixedly installed at the top end of the inner wall of the evaporation tank. A plurality of heating tubes are fixedly installed on the fixing frame. An electromagnetic valve is fixedly installed at the bottom end of the evaporation tank. One end of the outlet of the electromagnetic valve is fixedly installed with an outlet. A steam outlet and a steam inlet are fixedly installed on one side of the outer wall of the evaporation tank. The steam outlet is connected with the inlet of the separator through a pipeline and a compressor.

[0012] Optionally, a concentrated liquid outlet is fixedly installed at the bottom end of the separator. A steam circulation port is fixedly installed on the outer wall of the separator. The steam circulation port is connected with the steam inlet through a pipeline and a compressor.

[0013] A treatment method for a treatment device for treating high-concentration ammonium nitrate waste water includes the following steps: S1. A jacket layer is provided on the outer wall of the evaporation tank and heated by high-temperature steam. The waste liquid inside the evaporation tank is heated to generate steam. S2. The heating pipe generates heat and preheats the flowing wastewater. S3. The waste liquid inside the evaporation tank is heated to generate steam, which is transported to the separator through the steam outlet. The residual waste liquid in the steam generated by the waste gas is separated, and then is re-transported back to the evaporation tank through the steam circulation port to achieve the circulation of steam. S4. The waste liquid is lifted by the moving plate, and the lifted waste liquid falls along the inner wall surface of the evaporation tank, increasing the fluidity of the waste liquid.

[0014] The present invention has at least the following beneficial effects: (1) In this solution, by setting up a liquid guiding mechanism, after the waste liquid in the evaporation tank falls to the bottom of the evaporation tank, the moving plate moves up and down through the transmission of the lead screw. During the rising process of the moving plate, part of the waste liquid is carried up by the moving plate. Then, the waste liquid on the moving plate flows through the communication hole onto the guiding plate and obliquely flows downward along the guiding groove on the guiding plate to the inner wall surface of the evaporation tank. The liquid falls along the inner wall surface of the evaporation tank, increasing the fluidity of the waste liquid and enabling the waste liquid to better contact the inner wall of the evaporation tank, improving the evaporation speed and increasing the efficiency of evaporation and concentration. (2) In this solution, by setting up a sealing cover, when the moving plate moves to the topmost position, it is engaged with the sealing cover. The high-pressure air pump is started to supply air to the closed part of the sealing cover and the moving plate. Through the high-pressure air flow, the residual waste liquid is blown out of the communication hole to reduce the blockage of the communication hole. (3) In this solution, by setting up a connecting piece, the connecting piece extends obliquely downward at the bottom end of the moving plate to guide the flow direction of the waste liquid, enabling the waste liquid to better fall onto the guiding plate. (4) In this solution, by setting up a heat insulation frame, an installation frame and the transmission structure inside it, the motor is installed, and the motor is well isolated from the evaporation tank to protect the motor. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Figure 1 It is a schematic structural diagram of the present invention; Figure 2 It is a cross-sectional view of the present invention; Figure 3 It is an installation diagram of the lead screw of the present invention; Figure 4 It is an installation block diagram of the present invention; Figure 5 This is the installation diagram of the mobile disk of the present invention; Figure 6 This is the cross-sectional view of the mobile disk of the present invention; Figure 7 This is the connection diagram of the evaporation tank and the separator of the present invention.

[0016] In the attached drawings, the list of components represented by each label is as follows: 1. Evaporation tank; 2. Waste water inlet; 3. Water separation plate; 4. Heating pipe; 5. Vapor outlet; 6. Vapor inlet; 7. Lead screw; 701. First bevel gear; 8. Limit rod; 9. Mobile disk; 10. Communication hole; 11. Connector; 12. Guide plate; 13. Guide groove; 14. First connecting plate; 15. Second connecting plate; 16. Air delivery frame; 17. Sealing cover; 18. Heat insulation frame; 19. Installation frame; 20. Motor; 21. First turntable; 22. Installation rod; 23. Second bevel gear; 24. Transmission belt; 25. Mechanical seal; 26. Solenoid valve; 27. Outlet; 28. Separator; 29. Concentrated liquid outlet; 30. Vapor circulation port. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1-7 , the present invention provides a treatment device and method for treating high-concentration ammonium nitrate wastewater, including an evaporation tank 1 and a separator 28; a liquid guiding mechanism, which is arranged inside the evaporation tank 1, and the liquid guiding mechanism drives the concentrated liquid at the bottom of the evaporation tank 1 to rise and guides it to fall on the inner wall surface of the evaporation tank 1 through the mobile disk 9, the communication hole 10 and the guide plate 12 therein; a dredging mechanism, which is arranged inside the evaporation tank 1, and the dredging mechanism dredges the communication hole 10 on the mobile disk 9 through the sealing cover 17 therein; by setting the liquid guiding mechanism, after the waste liquid in the evaporation tank 1 falls to the bottom of the evaporation tank 1, the mobile disk 9 is driven to move up and down by the transmission of the lead screw 7. During the rising process of the mobile disk 9, part of the waste liquid is carried up by the mobile disk 9, and then the waste liquid on the mobile disk 9 flows to the guide plate 12 through the communication hole 10 and obliquely flows down along the guide groove 13 on the guide plate 12 to the inner wall surface of the evaporation tank 1, and the liquid falls along the inner wall surface of the evaporation tank 1, increasing the fluidity of the waste liquid and enabling the waste liquid to better contact the inner wall of the evaporation tank 1, improving the evaporation speed and increasing the evaporation and concentration efficiency.

[0019] In this example, the bottom of the mobile disk 9 is a concave arc surface.

[0020] In some embodiments, referring to Figure 2 , Figure 3 , Figure 5 , Figure 6 , the liquid guiding mechanism includes a lead screw 7, a limit rod 8, a moving disk 9, a plurality of communication holes 10, a plurality of connecting members 11, a guiding plate 12, a guiding groove 13, a first connecting plate 14 and a second connecting plate 15. The lead screw 7 and the limit rod 8 are fixedly installed at the bottom end of the inner wall of the evaporation tank 1. A plurality of connecting members 11 are integrally formed at the bottom end of the moving disk 9. A plurality of communication holes 10 are opened at the top of the moving disk 9, and the other ends of the communication holes 10 extend to one end of the corresponding connecting members 11. The guiding plate 12 is fixedly installed at one end of the connecting member 11. The guiding groove 13 is opened at the top of the connecting member 11. The first connecting plate 14 and the second connecting plate 15 are respectively fixedly installed on both sides of the outer wall of the moving disk 9. The first connecting plate 14 is threadedly connected to the outer wall of the lead screw 7 through the threaded hole thereon. The second connecting plate 15 is slidably installed on the outer wall of the limit rod 8 through the through hole thereon; the outlet direction of the communication hole 10 corresponds to the guiding groove 13 on the corresponding guiding plate 12, and one end of the guiding plate 12 extends to the inner wall surface of the evaporation tank 1; the first connecting plate 14 and the second connecting plate 15 are used to install the moving disk 9 at the bottom end inside the evaporation tank 1. By providing the connecting member 11, the connecting member 11 extends obliquely downward at the bottom end of the moving disk 9 to guide the flow direction of the waste liquid, so that the waste liquid can better fall onto the guiding plate 12.

[0021] In some embodiments, referring to Figure 4 , a heat insulation frame 18 is fixedly installed on the outer wall of the evaporation tank 1. An installation frame 19 is fixedly installed on one side of the heat insulation frame 18. A motor 20 is fixedly installed on one side of the installation frame 19. The output end of the motor 20 extends into the installation frame 19. A first turntable 21 is fixedly installed at the output end of the motor 20. A mounting rod 22 is rotatably installed at the bottom of one side of the inner wall of the installation frame 19. A second turntable is fixedly installed on the outer wall of the mounting rod 22. A transmission belt 24 is installed between the first turntable 21 and the second turntable. A mechanical seal 25 is fixedly installed at the bottom end of the other side of the heat insulation frame 18. The mechanical seal 25 extends into the evaporation tank 1. One end of the mounting rod 22 is installed on the mechanical seal 25, and one end of the mounting rod 22 passes through the mechanical seal 25 and extends into the evaporation tank 1. A second bevel gear 23 is fixedly installed at the end of the mounting rod 22 extending into the evaporation tank 1; by providing the heat insulation frame 18 and the installation frame 19 and the transmission structure inside them, the motor 20 is installed, and the motor 20 is well isolated from the evaporation tank 1 to protect the motor 20. When the motor 20 is started, it drives the first turntable 21 to rotate. Through the transmission of the transmission belt 24 and the second turntable, the mounting rod 22 is driven, so that the second bevel gear 23 rotates, providing drive for the rotation of the lead screw 7.

[0022] In this example, the motor 20 can be a servo motor.

[0023] In some embodiments, referring to Figure 3 , a first bevel gear 701 is fixedly installed at the top end of the outer wall of the lead screw 7. The first bevel gear 701 meshes with the second bevel gear 23. A rotating seat is fixedly installed on the inner wall of the evaporation tank 1, and the top end of the lead screw 7 is rotatably installed on the rotating seat; the lead screw 7 is driven to rotate forward or backward through the meshing of the second bevel gear 23 and the first bevel gear 701.

[0024] In this example, by setting the limiting rod 8, when the moving disk 9 moves up and down, the moving disk 9 is limited.

[0025] In some embodiments, referring to Figure 3 , the dredging mechanism includes an air delivery frame 16 and a sealing cover 17. The air delivery frame 16 is fixedly installed on one side of the inner wall of the evaporation tank 1. One end of the air delivery frame 16 extends to the outside of the evaporation tank 1, and the end of the air delivery frame 16 extending to the outside of the evaporation tank 1 is connected to a high-pressure air pump through an air delivery pipeline. The sealing cover 17 is fixedly installed at the other end of the air delivery frame 16, and the sealing cover 17 is engaged with the top of the moving disk 9; by setting the sealing cover 17, when the moving disk 9 moves to the topmost position, it is engaged with the sealing cover 17, and the high-pressure air pump is started to deliver air to the closed part between the sealing cover 17 and the moving disk 9. Through the high-pressure air flow, the residual waste liquid is blown out of the communication hole 10, reducing the blockage of the communication hole 10.

[0026] Further, referring again to Figure 7 , a waste water inlet 2 is fixedly installed at the top end of the evaporation tank 1. The bottom end of the waste water inlet 2 extends into the evaporation tank 1. A water distribution plate 3 is fixedly installed at the bottom end of the waste water inlet 2. A fixing frame is fixedly installed at the top end of the inner wall of the evaporation tank 1, and a plurality of heating tubes 4 are fixedly installed on the fixing frame. A solenoid valve 26 is fixedly installed at the bottom end of the evaporation tank 1. An outlet 27 is fixedly installed at one end of the outlet of the solenoid valve 26. A vapor outlet 5 and a vapor inlet 6 are fixedly installed on one side of the outer wall of the evaporation tank 1. The vapor outlet 5 is connected to the inlet of the separator 28 through a pipeline and a compressor. A concentrated liquid outlet 29 is fixedly installed at the bottom end of the separator 28. A vapor circulation port 30 is fixedly installed on the outer wall of the separator 28. The vapor circulation port 30 is connected to the vapor inlet 6 through a pipeline and a compressor; an electric heating wire is arranged inside the heating tube 4, and the electric heating wire is energized to make the heating tube 4 generate heat, heating the flowing waste water. A jacket is arranged on the outer wall of the evaporation tank 1, and the waste liquid inside the evaporation tank 1 is heated to generate vapor by high-temperature vapor. The vapor is transported to the separator 28 through the vapor outlet 5, the residual waste liquid in the vapor generated by the waste gas is separated, and then is re-transported back to the evaporation tank 1 through the vapor circulation port 30 to realize the circulation of the vapor. The concentrated liquid in the evaporation tank 1 is discharged through the outlet 27 to the subsequent treatment steps.

[0027] In this example, before evaporating the ammonium nitrate wastewater, the high-concentration ammonium nitrate wastewater can be diluted to a lower concentration, such as a concentration below 30%, to reduce the explosion risk of the ammonium nitrate wastewater during the evaporation process. During the evaporation process, the temperature of the wastewater inside the evaporation tank 1 is strictly controlled to keep the temperature of the ammonium nitrate wastewater between 95°C and 120°C, which can effectively avoid the risk of thermal decomposition or explosion of ammonium nitrate at high temperatures.

[0028] The working process and principle of the present invention: When the waste liquid is concentrated by the evaporation tank 1, the waste liquid enters the evaporation tank 1 through the wastewater inlet 2 and is preheated by the heating pipe 4 during the downward flow. After flowing to the bottom of the evaporation tank 1, the motor 20 starts to drive the first turntable 21 to rotate. Through the transmission of the transmission belt 24 and the second turntable, the mounting rod 22 is driven, so that the second bevel gear 23 rotates. Through the meshing of the second bevel gear 23 and the first bevel gear 701, the lead screw 7 rotates forward or backward, causing the moving plate 9 to move up and down. During the upward movement of the moving plate 9, part of the waste liquid is carried up by the moving plate 9. Then, the waste liquid on the moving plate 9 flows onto the guiding plate 12 through the communication hole 10 and flows obliquely downward along the guiding groove 13 on the guiding plate 12 to the inner wall surface of the evaporation tank 1, and the liquid falls along the inner wall surface of the evaporation tank 1.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A treatment device for treating high-concentration ammonium nitrate wastewater, characterized in that: include: An evaporation tank (1) and a separator (28); a liquid guiding mechanism, the liquid guiding mechanism being arranged inside the evaporation tank (1), the liquid guiding mechanism driving the concentrated liquid at the bottom of the evaporation tank (1) to rise through the moving plate (9), the connecting hole (10) and the guiding plate (12) therein and guiding the concentrated liquid to fall onto the inner wall surface of the evaporation tank (1); A dredging mechanism, wherein the dredging mechanism is arranged inside the evaporation tank (1), and the dredging mechanism dredges the communication hole (10) on the movable plate (9) through a sealing cover (17) therein.

2. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 1, characterized in that: The liquid guiding mechanism comprises a screw rod (7), a limiting rod (8), a movable plate (9), a plurality of connecting holes (10), a plurality of connecting members (11), a guide plate (12), a guide groove (13), a first connecting plate (14) and a second connecting plate (15), wherein the screw rod (7) and the limiting rod (8) are fixedly mounted on the bottom end of the inner wall of the evaporation tank (1), a plurality of connecting members (11) are integrally formed on the bottom end of the movable plate (9), a plurality of connecting holes (10) are opened on the top of the movable plate (9), and the connecting holes (10) are ) extends to the other end corresponding to one end of the connecting member (11), the guide plate (12) is fixedly mounted on one end of the connecting member (11), the guide groove (13) is opened at the top of the connecting member (11), the first connecting plate (14) and the second connecting plate (15) are respectively fixedly mounted on both sides of the outer wall of the movable disk (9), the first connecting plate (14) is threadedly connected to the outer wall of the screw rod (7) through the threaded hole thereon, and the second connecting plate (15) is slidably mounted on the outer wall of the limit rod (8) through the through hole thereon.

3. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 2, characterized in that: The outlet direction of the communication hole (10) corresponds to the guide groove (13) on the corresponding guide plate (12), and one end of the guide plate (12) extends to the inner wall surface of the evaporation tank (1).

4. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 2, characterized in that: An insulation frame (18) is fixedly mounted on the outer wall of the evaporator (1), a mounting frame (19) is fixedly mounted on one side of the insulation frame (18), a motor (20) is fixedly mounted on one side of the mounting frame (19), an output end of the motor (20) extends into the interior of the mounting frame (19), a first rotating disk (21) is fixedly mounted on the output end of the motor (20), a mounting rod (22) is rotatably mounted on the bottom of one side of the inner wall of the mounting frame (19), a second rotating disk is fixedly mounted on the outer wall of the mounting rod (22), and a transmission belt (24) is mounted between the first rotating disk (21) and the second rotating disk.

5. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 4, characterized in that: A mechanical seal (25) is fixedly mounted on the bottom end of the other side of the heat insulation frame (18), the mechanical seal (25) extending into the interior of the evaporator (1), one end of the mounting rod (22) is mounted on the mechanical seal (25), and one end of the mounting rod (22) passes through the mechanical seal (25) and extends into the interior of the evaporator (1), and a second bevel gear (23) is fixedly mounted on the end of the mounting rod (22) extending into the interior of the evaporator (1).

6. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 5, characterized in that: A first bevel gear (701) is fixedly mounted on the top end of the outer wall of the screw rod (7), the first bevel gear (701) meshing with the second bevel gear (23), and a rotating seat is fixedly mounted on the inner wall of the evaporator (1), the top end of the screw rod (7) being rotatably mounted on the rotating seat.

7. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 1, characterized in that: The dredging mechanism comprises a gas delivery frame (16) and a sealing cover (17); the gas delivery frame (16) is fixedly mounted on one side of the inner wall of the evaporation tank (1); one end of the gas delivery frame (16) extends to the outside of the evaporation tank (1); and the end of the gas delivery frame (16) extending to the outside of the evaporation tank (1) is connected to a high-pressure air pump via a gas delivery pipeline; the sealing cover (17) is fixedly mounted on the other end of the gas delivery frame (16), and the sealing cover (17) is engaged with the top of the movable plate (9).

8. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 1, characterized in that: A wastewater inlet (2) is fixedly mounted on the top of the evaporation tank (1), the bottom of the wastewater inlet (2) extends into the interior of the evaporation tank (1), a water separation tray (3) is fixedly mounted on the bottom of the wastewater inlet (2), a fixing frame is fixedly mounted on the top of the inner wall of the evaporation tank (1), a plurality of heating tubes (4) are fixedly mounted on the fixing frame, a solenoid valve (26) is fixedly mounted on the bottom of the evaporation tank (1), an outlet (27) is fixedly mounted on one end of the outlet of the solenoid valve (26), a steam outlet (5) and a steam inlet (6) are fixedly mounted on one side of the outer wall of the evaporation tank (1), the steam outlet (5) is connected to the inlet of the separator (28) through a pipeline and a compressor.

9. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 8, characterized in that: A concentrated liquid outlet (29) is fixedly mounted on the bottom end of the separator (28), and a steam circulation port (30) is fixedly mounted on the outer wall of the separator (28); the steam circulation port (30) is connected to the steam inlet (6) via a pipeline and a compressor.

10. A method for treating high-concentration ammonium nitrate wastewater according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, the outer wall of the evaporation tank (1) is provided with a jacket layer, and the waste liquid inside the evaporation tank (1) is heated by high-temperature steam to generate steam; S2, the heating tube (4) generates heat to preheat the wastewater flowing through it; S3, the waste liquid in the evaporation tank (1) is heated to generate steam, which is transported to the separator (28) through the steam outlet (5), and the residual waste liquid in the steam generated by the waste gas is separated, and then the waste liquid is transported back to the evaporation tank (1) through the steam circulation port (30), so as to realize the circulation of the steam; S4. The waste liquid is lifted by the moving plate (9), and the lifted waste liquid falls along the inner wall surface of the evaporation tank (1), thereby increasing the fluidity of the waste liquid.

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