A 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, comprising an evaporation tank and a separator; a liquid guiding mechanism, wherein the liquid guiding mechanism is arranged inside the evaporation tank, and the liquid guiding mechanism drives concentrated liquid at the bottom of the evaporation tank to rise through a moving disk, a communicating hole and a guide plate therein, and guides the concentrated liquid to fall on the inner wall surface of the evaporation tank; the liquid guiding mechanism is provided, and after the waste liquid in the evaporation tank falls to the bottom of the evaporation tank, the moving disk is driven up and down by a screw rod; during the rising process of the moving disk, part of the waste liquid is carried up by the moving disk, and then the waste liquid on the moving disk flows through the communicating hole to the guide plate, and flows obliquely downward along the guide groove on the guide plate to the inner wall surface of the evaporation tank, and the liquid falls along the inner wall surface of the evaporation tank, thereby increasing the fluidity of the waste liquid and enabling the waste liquid to better contact with the inner wall of the evaporation tank, thereby improving the evaporation speed and the efficiency of evaporation and concentration.

Description

Technical Field

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

[0002] Ammonium nitrate is the nitrate of ammonium cation, usually a white crystalline solid, highly soluble in water, easy to absorb moisture and agglomerate, and absorbs a large amount of heat when dissolved. A large amount of high-concentration ammonium nitrate wastewater is produced during the production of fertilizers. Evaporation and concentration can effectively treat high-concentration ammonium nitrate wastewater. After evaporation and concentration, the steam and concentrate are transported to the crystallizer for further crystallization treatment. Nowadays, when evaporating and concentrating high-concentration ammonium nitrate wastewater, the wastewater enters the evaporator, is preheated by the heating tube, and then gathers 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 object 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 technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A device and method for treating high-concentration ammonium nitrate wastewater, comprising an evaporation tank and a separator;

[0006] a liquid guiding mechanism disposed inside the evaporation tank, the liquid guiding mechanism driving the concentrated liquid at the bottom of the evaporation tank upward through the movable plate, the communicating hole, and the guide plate therein and guiding the concentrated liquid to fall to the inner wall surface of the evaporation tank;

[0007] A dredging mechanism is provided inside the evaporation tank and dredges the connecting holes on the movable plate through a sealing cover therein.

[0008] Optionally, the liquid guiding mechanism includes a screw rod, a limiting rod, a movable plate, several communicating holes, several connecting parts, a guide plate, a guide groove, a first connecting plate and a second connecting plate, the screw rod and the limiting rod are fixedly installed at the bottom end of the inner wall of the evaporator, several connecting parts are integrally formed at the bottom end of the movable plate, several communicating holes are opened at the top of the movable plate, and the other end of the communicating holes extends to one end of the corresponding connecting part, the guide plate is fixedly installed at one end of the connecting part, the guide groove is opened at the top of the connecting part, the first connecting plate and the second connecting plate are respectively fixedly installed on both sides of the outer wall of the movable plate, the first connecting plate is threadedly connected to the outer wall of the screw rod through the threaded hole thereon, and the second connecting plate is slidably installed on the outer wall of the limiting rod through the through hole thereon.

[0009] Optionally, an outlet direction of the communication hole corresponds to a guide groove on the guide plate, and one end of the guide plate extends to the inner wall surface of the evaporation tank.

[0010] Optionally, an insulation frame is fixedly mounted on the outer wall of the evaporator, a mounting frame is fixedly mounted on one side of the insulation frame, a motor is fixedly mounted on one side of the mounting frame, an output end of the motor extends into the interior of the mounting frame, a first turntable is fixedly mounted on the output end of the motor, a mounting rod is rotatably mounted on the bottom of one side of the inner wall of the mounting frame, a second turntable is fixedly mounted on the outer wall of the mounting rod, and a transmission belt is installed between the first turntable and the second turntable.

[0011] Optionally, a mechanical seal is fixedly installed on the bottom end of the other side of the insulation frame, and the mechanical seal extends to the interior of the evaporator. 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 interior of the evaporator. A second bevel gear is fixedly installed on the end of the mounting rod extending to the interior of the evaporator.

[0012] Optionally, a first bevel gear is fixedly mounted on the top end of the outer wall of the screw rod, the first bevel gear is meshed with the second bevel gear, a rotating seat is fixedly mounted on the inner wall of the evaporator, and the top end of the screw rod is rotatably mounted on the rotating seat.

[0013] Optionally, the dredging mechanism includes a gas delivery frame and a sealing cover, the gas delivery frame is fixedly mounted on one side of the inner wall of the evaporation tank, one end of the gas delivery frame extends to the outside of the evaporation tank, and the end of the gas delivery frame extending to the outside of the evaporation tank is connected to a high-pressure air pump through a gas delivery pipeline, the sealing cover is fixedly mounted on the other end of the gas delivery frame, and the sealing cover is engaged with the top of the movable plate.

[0014] Optionally, a wastewater inlet is fixedly installed at the top of the evaporation tank, the bottom end of the wastewater inlet extends into the interior of the evaporation tank, a water separation tray is fixedly installed at the bottom end of the wastewater inlet, a fixing bracket 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 bracket, a solenoid valve is fixedly installed at the bottom end of the evaporation tank, an outlet is fixedly installed at one end of the solenoid valve outlet, a steam outlet and a steam inlet are fixedly installed on one side of the outer wall of the evaporation tank, and the steam outlet is connected to the separator inlet through a pipeline and a compressor.

[0015] Optionally, a concentrated liquid outlet is fixedly installed at the bottom end of the separator, and a steam circulation port is fixedly installed on the outer wall of the separator, and the steam circulation port is connected to the steam inlet through a pipeline and a compressor.

[0016] A method for treating high-concentration ammonium nitrate wastewater using a treatment device, comprising the following steps:

[0017] S1. The outer wall of the evaporation tank is provided with a jacket layer, which is heated by high-temperature steam, and the waste liquid inside the evaporation tank is heated to generate steam;

[0018] S2, the heating tube generates heat to preheat the wastewater flowing through it;

[0019] S3: The waste liquid inside the evaporation tank is heated to generate steam, which is transported to the separator through the steam outlet to separate the residual waste liquid from the steam generated by the waste gas. The waste liquid is then transported back to the evaporation tank through the steam circulation port to achieve steam circulation.

[0020] 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.

[0021] The present invention has at least the following beneficial effects:

[0022] (1) This solution sets up a liquid guiding mechanism. After the waste liquid in the evaporation tank falls to the bottom of the evaporation tank, the movable plate is moved up and down by the transmission of the screw rod. During the rising process of the movable plate, part of the waste liquid is carried up by the movable plate. Then the waste liquid on the movable plate flows through the connecting hole to the guide plate and flows downward along the guide groove on the guide plate to the inner wall surface of the evaporation tank. The liquid falls along the inner wall surface of the evaporation tank, which increases the fluidity of the waste liquid and enables the waste liquid to better contact with the inner wall of the evaporation tank, thereby increasing the evaporation speed and the efficiency of evaporation concentration.

[0023] (2) This solution sets a sealing cover. When the movable disk moves to the top, it engages with the sealing cover. The high-pressure air pump starts to supply air to the closed part of the sealing cover and the movable disk. The high-pressure air flow blows the remaining waste liquid out of the connecting hole, reducing the blockage of the connecting hole.

[0024] (3) This solution provides a connecting piece that extends obliquely downward at the bottom of the movable plate to guide the flow of the waste liquid, so that the waste liquid can fall onto the guide plate better;

[0025] (4) This solution installs the motor by setting up an insulation frame, an installation frame and the transmission structure inside it, and effectively isolates the motor from the evaporation tank to protect the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a cross-sectional view of the present invention;

[0029] Figure 3 This is a diagram showing the installation of the screw rod of the present invention;

[0030] Figure 4 It is the installation block diagram of the present invention;

[0031] Figure 5 This is a diagram showing the installation of a mobile disk according to the present invention;

[0032] Figure 6 A cross-sectional view of the movable disk of the present invention;

[0033] Figure 7 This is a connection diagram of the evaporator and separator of the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0035] 1. Evaporation tank; 2. Wastewater inlet; 3. Water distribution plate; 4. Heating tube; 5. Steam outlet; 6. Steam inlet; 7. Screw; 701, first bevel gear; 8. Limit rod; 9. Moving plate; 10. Connecting hole; 11. Connecting piece; 12. Guide plate; 13. Guide groove; 14. First connecting plate; 15. Second connecting plate; 16. Gas transmission frame; 17. Sealing cover; 18. Insulation frame; 19. Mounting frame; 20. Motor; 21. First turntable; 22. Mounting rod; 23. Second bevel gear; 24. Transmission belt; 25. Mechanical seal; 26. Solenoid valve; 27. Outlet; 28. Separator; 29. ​​Concentrate outlet; 30. Steam circulation port. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 7The present invention provides a treatment device and method for treating high-concentration ammonium nitrate wastewater, comprising 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 disk 9, the communicating hole 10 and the guiding plate 12 therein and guiding it to fall to the inner wall surface of the evaporation tank 1; a dredging mechanism, the dredging mechanism being arranged inside the evaporation tank 1, the dredging mechanism dredges the communicating hole 10 on the moving 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 movable plate 9 is moved up and down by the transmission of the screw rod 7. During the rising process of the movable plate 9, part of the waste liquid is carried up by the movable plate 9. Then, the waste liquid on the movable plate 9 flows onto the guide plate 12 through the connecting hole 10, and flows downward along the guide groove 13 on the guide plate 12 to the inner wall surface of the evaporation tank 1. The liquid falls along the inner wall surface of the evaporation tank 1, which increases the fluidity of the waste liquid and enables the waste liquid to better contact with the inner wall of the evaporation tank 1, thereby improving the evaporation speed and the efficiency of evaporation concentration.

[0038] In this embodiment, the bottom of the movable plate 9 is a concave arc surface.

[0039] In some embodiments, see Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 The liquid guiding mechanism includes 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. The screw rod 7 and the limiting rod 8 are fixedly mounted on the bottom end of the inner wall of the evaporator 1. The plurality of connecting members 11 are integrally formed at the bottom end of the movable plate 9. The plurality of connecting holes 10 are opened at the top of the movable plate 9, and the other end of the connecting hole 10 extends to one end of the corresponding 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 fixedly mounted on the bottom end of the inner wall of the evaporator 1 It is fixedly installed 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 installed on the outer wall of the limit rod 8 through the through hole thereon; the outlet direction of the communicating 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; the first connecting plate 14 and the second connecting plate 15 are used to install the movable disk 9 at the bottom end of the evaporation tank 1, and the connecting member 11 is provided. The connecting member 11 extends obliquely downward at the bottom end of the movable disk 9 to guide the flow direction of the waste liquid, so that the waste liquid can better fall on the guide plate 12.

[0040] In some embodiments, see Figure 4, an insulation frame 18 is fixedly mounted on the outer wall of the evaporation tank 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, the output end of the motor 20 extends into the interior of the mounting frame 19, a first turntable 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 turntable is fixedly mounted 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 mounted on the bottom end of the other side of the insulation frame 18, the mechanical seal 25 extends into the interior of the evaporation tank 1, and the mounting rod 22 is fixedly mounted on the outer wall of the mounting rod 22. The first rotating disk 21 is rotated by the motor 20, and the second rotating disk 21 is rotated by the motor 20. The first rotating disk 21 is rotated by the motor 20. The second rotating disk 21 is rotated by the motor 20. The second rotating disk 21 is rotated by the motor 20. The second rotating disk 21 is rotated by the motor 20. The second rotating disk 21 is rotated by the motor 20. The second rotating disk 21 is rotated by the motor 20. The second rotating disk 21 is rotated by the motor 20. The second rotating disk 21 is rotated by the motor 20.

[0041] In this embodiment, the motor 20 may be a servo motor.

[0042] In some embodiments, see Figure 3 A first bevel gear 701 is fixedly mounted on the top of the outer wall of the screw rod 7, and the first bevel gear 701 is meshed with the second bevel gear 23. A rotating seat is fixedly mounted on the inner wall of the evaporator 1, and the top of the screw rod 7 is rotatably mounted on the rotating seat; the meshing of the second bevel gear 23 and the first bevel gear 701 drives the screw rod 7 to rotate forward or reverse.

[0043] In this embodiment, the limiting rod 8 is provided to limit the movable plate 9 when the movable plate 9 moves up and down.

[0044] In some embodiments, see Figure 3 The dredging mechanism includes an air delivery frame 16 and a sealing cover 17. The air delivery frame 16 is fixedly mounted on one side of the inner wall of the evaporation tank 1, and 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 a gas delivery pipeline. The sealing cover 17 is fixedly mounted on the other end of the air delivery frame 16, and the sealing cover 17 is engaged with the top of the movable disk 9; by providing the sealing cover 17, when the movable disk 9 moves to the top, it is engaged with the sealing cover 17, and the high-pressure air pump is started to supply air to the closed position of the sealing cover 17 and the movable disk 9. The residual waste liquid is blown out of the communicating hole 10 by the high-pressure airflow, thereby reducing the blockage of the communicating hole 10.

[0045] For further information, please refer to Figure 7The top of the evaporation tank 1 is fixedly equipped with a wastewater inlet 2, and the bottom of the wastewater inlet 2 extends into the interior of the evaporation tank 1. A water separation tray 3 is fixedly installed at the bottom of the wastewater inlet 2. A fixing bracket is fixedly installed on the top of the inner wall of the evaporation tank 1, and a number of heating tubes 4 are fixedly installed on the fixing bracket. A solenoid valve 26 is fixedly installed at the bottom of the evaporation tank 1, and an outlet 27 is fixedly installed at one end of the outlet of the solenoid valve 26. A steam outlet 5 and a steam inlet 6 are fixedly installed 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. A concentrated liquid outlet 29 is fixedly installed at the bottom of the separator 28, and the outer wall of the separator 28 is fixedly installed. A steam circulation port 30 is provided, which is connected to the steam inlet 6 through a pipeline and a compressor; an electric heating wire is provided inside the heating tube 4, and the electric heating wire is energized to heat the heating tube 4, thereby heating the wastewater flowing through. The outer wall of the evaporator 1 is provided with a jacket layer, and the waste liquid inside the evaporator 1 is heated by high-temperature steam 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 returned to the evaporator 1 through the steam circulation port 30, realizing the circulation between the steam. The concentrated liquid in the evaporator 1 is discharged through the outlet 27 to the subsequent treatment step.

[0046] In this example, before evaporating the ammonium nitrate wastewater, the high-concentration ammonium nitrate wastewater can be diluted to a lower concentration, for example, a concentration lower than 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 maintain 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.

[0047] The working process and principle of the present invention are as follows: when the waste liquid is concentrated by the evaporation tank 1, the waste liquid enters the evaporation tank 1 through the wastewater inlet 2, is preheated by the heating tube 4 during the downstream process, and after flowing to the bottom of the evaporation tank 1, the motor 20 is started to drive the first turntable 21 to rotate, and the mounting rod 22 is driven by the transmission belt 24 and the second turntable, thereby rotating the second bevel gear 23. The meshing of the second bevel gear 23 and the first bevel gear 701 drives the screw rod 7 to rotate forward or reverse, so that the movable plate 9 is raised and lowered. During the rising process of the movable plate 9, part of the waste liquid is carried up by the movable plate 9, and then the waste liquid on the movable plate 9 flows through the connecting hole 10 to the guide plate 12, and flows downward 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.

[0048] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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 movable plate (9), the communicating hole (10) and the guide plate (12) therein and guiding the concentrated liquid to fall onto the inner wall surface of the evaporation tank (1); A dredging mechanism, the dredging mechanism being 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; 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 the connecting members (11) are integrally formed on the bottom end of the movable plate (9), a plurality of the connecting holes (10) are opened on the top of the movable plate (9), and the connecting holes (10) are ) The other end extends to one end corresponding to 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.

2. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 1, 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).

3. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 1, characterized in that: An insulation frame (18) is fixedly mounted on the outer wall of the evaporation tank (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 turntable (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 turntable is fixedly mounted on the outer wall of the mounting rod (22), and a transmission belt (24) is installed between the first turntable (21) and the second turntable.

4. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 3, characterized in that: A mechanical seal (25) is fixedly mounted on the bottom end of the other side of the heat insulation frame (18), and the mechanical seal (25) extends into the interior of the evaporation tank (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 evaporation tank (1). A second bevel gear (23) is fixedly mounted on the end of the mounting rod (22) extending into the interior of the evaporation tank (1).

5. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 4, characterized in that: A first bevel gear (701) is fixedly mounted on the top end of the outer wall of the screw rod (7), and the first bevel gear (701) is meshed with the second bevel gear (23). A rotating seat is fixedly mounted on the inner wall of the evaporation tank (1), and the top end of the screw rod (7) is rotatably mounted on the rotating seat.

6. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 1, characterized in that: The dredging mechanism comprises an air delivery frame (16) and a sealing cover (17); the air delivery frame (16) is fixedly mounted 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 via a gas delivery pipeline; the sealing cover (17) is fixedly mounted on the other end of the air delivery frame (16), and the sealing cover (17) is engaged with the top of the movable plate (9).

7. 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 at 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), and the steam outlet (5) is connected to the inlet of the separator (28) through a pipeline and a compressor.

8. A treatment device for treating high-concentration ammonium nitrate wastewater according to claim 7, 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) through a pipeline and a compressor.

9. The method for treating high-concentration ammonium nitrate wastewater according to any one of claims 1 to 8, wherein: The following steps are involved: S1, the outer wall of the evaporation tank (1) is provided with a jacket layer, which is heated by high-temperature steam, and the waste liquid inside the evaporation tank (1) is heated to generate steam; S2, the heating tube (4) generates heat to preheat the wastewater flowing through it; S3, the waste liquid inside 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 returned to the evaporation tank (1) through the steam circulation port (30), thereby realizing 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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