Evaporator for recycling by-product ammonium chloride of manganese carbonate

Abstract

The application provides an evaporator for recycling by-product ammonium chloride of manganese carbonate, and belongs to the technical field of ammonium chloride production. The evaporator device is externally provided with a motor, the output end of the motor is inserted into the inner wall of one side of the evaporator device, the output end of the motor is provided with a crank rod, and the end of the crank rod is provided with a bearing. The application adopts the circulating heating mode of heat-conducting oil, does not need a complete steam supply system, only needs to connect the heat-conducting oil generating device and the return pipeline, improves the flow performance of the solution, increases the contact time of the heat-conducting oil and the solution, prevents the solution from deteriorating or crystallizing in advance due to local overheating, realizes the forced circulation of the hot liquid between the S-shaped heat-conducting pipe and the liquid storage box, is more energy-saving than the traditional steam heating, has high heating uniformity, the substandard hot liquid is introduced into the circulation again through the return pipe, the solution is ensured to reach the supersaturated state, and the crystallization recovery rate of the ammonium chloride is improved.

Description

Technical Field

[0001] This invention relates to the field of ammonium chloride production technology, and in particular to an evaporator for recycling ammonium chloride, a byproduct of manganese carbonate. Background Technology

[0002] The core principle of an evaporator for ammonium chloride recovery is based on an "evaporation-concentration-crystallization" process. This involves heating the ammonium chloride solution to remove moisture, causing the solution to reach a supersaturated state and precipitating ammonium chloride crystals, ultimately achieving solid-liquid separation and ammonium chloride recovery.

[0003] Chinese Patent Publication No. CN218011163U discloses a concentration and crystallization device for ammonium chloride purification. When a hollow motor operates, it drives a rotating tube, a first rotating rod, a rotating shaft, and a second rotating rod to rotate. The rotation of the second rotating rod stirs the heat-conducting oil in the heating chamber, while the rotation of the first rotating rod stirs the solution in the concentration shell, thus ensuring uniform heating of the solution and improving concentration efficiency. During cooling, the condensate flowing in the spiral cooling pipe cools the crystallization shell. When the temperature drops to a suitable level, ammonium chloride crystals precipitate in the crystallization shell. Finally, after solid-liquid separation by a filtration assembly, the precipitated ammonium chloride... Ammonium crystals will remain in the filter assembly, and waste liquid will be discharged through the discharge pipe. Temperature sensors allow for real-time monitoring of the temperature in the concentration or crystallization shell. Before entering the concentration shell, the solution is filtered through a filter, which further improves the purification effect of the ammonium chloride crystals. However, when heating the ammonium chloride solution with heat transfer oil, insufficient contact between the heat transfer oil and the solution, coupled with poor solution flow, can easily lead to clumping. Furthermore, heating new solution directly without preheating prolongs the heating time and reduces the efficiency of ammonium chloride recovery.

[0004] Therefore, this application provides an evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, to meet the demand. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, to solve the problems of poor flowability of the solution when heating ammonium chloride solution with heat transfer oil, which easily leads to agglomeration, and the extended heating time when the new solution is heated directly without preheating.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] An evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, includes an evaporator device. A motor is installed on one side of the evaporator device, and the output end of the motor is inserted into the inner wall of one side of the evaporator device. A crank is installed at the output end of the motor, and a bearing is provided at the end of the crank. A mounting plate is rotatably connected to one end of the bearing. Multiple piston rods are installed at the bottom of the mounting plate, and piston cylinders are sleeved at the bottom of the piston rods. An inclined suction tube is provided at the bottom end of the piston cylinder, and a liquid outlet pipe is installed on one side of the bottom of the piston cylinder. A liquid storage box is inserted at the top end of the inclined suction tube, and a straight connecting pipe is fixedly connected to the bottom end of the liquid outlet pipe. Multiple S-shaped heat-conducting pipes are installed at the bottom end of the straight connecting pipe, and heat-conducting fins are inserted into one side and the inner wall of each S-shaped heat-conducting pipe. A retention plate is installed at the front end of each heat-conducting fin.

[0008] Optionally, a reflux pipe is installed on one side of the liquid storage box, and an inlet pipe is installed on the other side of the liquid storage box. The liquid storage box is fixed to the inner wall of the evaporator equipment through the inlet pipe.

[0009] Optionally, the number of the straight connecting pipes is set to multiple, and a fixing plate is sleeved on the outer surface of each of the multiple straight connecting pipes.

[0010] Optionally, a hydrothermal storage tank is installed at the bottom of the evaporator device, and a partition is installed on the top of the hydrothermal storage tank, the partition being made of heat-insulating material.

[0011] Optionally, the bottom of the S-shaped heat pipe is inserted into the partition plate, and the bottom end of the S-shaped heat pipe is close to the bottom surface of the hydrothermal storage tank. A steam outlet pipe is installed on one side of the hydrothermal storage tank.

[0012] Optionally, a heat transfer oil circulation pipe is inserted and installed on one side of the evaporator and at the center of the fixed plate, and the heat transfer oil circulation pipe is located at the center of multiple S-shaped heat transfer pipes.

[0013] Optionally, a heat monitor is installed around the inner side of the hydrothermal storage tank, with a gap between the heat monitor and the S-shaped heat pipe.

[0014] Optionally, a hot oil output pipe is installed on one side of the evaporator, the bottom end of which is fixedly connected to the top end of the heat transfer oil circulation pipe, and a hot oil input pipe is installed on the back of the evaporator.

[0015] Optionally, the bottom end of the return pipe is inserted into one side of the hydrothermal storage tank, and the outer wall of the hydrothermal storage tank is provided with a heat insulation layer.

[0016] Optionally, the S-shaped heat pipe and heat-conducting sheet are made of pure nickel, multiple sets of the retaining plate are provided, the shape of the retaining plate is L-shaped, the number of the retaining plate is multiple, and they are vertically arranged and installed on the heat-conducting sheet.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above solution, by adopting a circulating heating method using heat transfer oil, there is no need for a complete steam supply system. Only the heat transfer oil generating equipment and return pipeline need to be connected, which greatly reduces the complexity of the equipment system and reduces the initial investment cost. The heat transfer oil circulation system has a simpler structure. Compared with the multiple components of the steam system, the heat transfer oil output pipeline and hot liquid storage tank are easier to maintain, reducing the frequency of parts replacement and maintenance time, resulting in lower long-term operating costs. It also solves the problem of local overheating. Through the forced circulation of heat transfer oil in the evaporator equipment, heat is evenly transferred to the ammonium chloride solution through the S-shaped heat transfer pipe and heat transfer plate made of pure nickel, avoiding the problem of uneven temperature caused by open flame heating or local heating, and preventing the solution from deteriorating or prematurely crystallizing due to local overheating.

[0019] By setting a uniform heating environment, local crystallization and scaling of ammonium chloride on the inner wall of the pipe can be avoided, reducing the risk of pipe blockage and extending the service life of core components such as S-type heat pipes and straight-through connecting pipes. At the same time, frequent shutdowns for scaling removal are not required, increasing the continuous operating time of the equipment. When the solution flows along the internal path of the S-type heat pipe, it passes through the buffer plate, where the structure of multiple buffer plates creates a vortex, reducing the flow velocity of the solution and increasing the heating time of the S-type heat pipe on the solution, thereby improving the heating efficiency of the solution.

[0020] A suction-extrusion mechanism consisting of a crankshaft, piston rod, and piston cylinder driven by a motor, along with a reflux pipe, draws the substandard heated solution from the hydrothermal storage tank back to the storage box, where it re-enters the S-shaped heat pipe for recirculation heating. This ensures the solution eventually reaches a supersaturated state, reducing solution waste due to insufficient heating and improving the ammonium chloride crystallization recovery rate. A portion of the already heated solution from the hydrothermal storage tank is also drawn back to the storage box via the reflux pipe, where it mixes with the new solution pumped in from the inlet pipe and undergoes a second heating process to preheat the new solution. This cyclical heating enhances the heating effect on subsequent solutions. Attached Figure Description

[0021] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the evaporator;

[0023] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the evaporator;

[0024] Figure 3A top-view three-dimensional structural diagram of the evaporator;

[0025] Figure 4 This is a schematic diagram of the structure of the liquid storage box, piston cylinder, and inclined pipette;

[0026] Figure 5 This is a schematic diagram of the S-shaped heat pipe and the heat transfer oil circulation pipe.

[0027] Figure 6 for Figure 5 Enlarged diagram of A in the middle;

[0028] Figure 7 This is a cross-sectional view of the internal structure of the S-shaped heat pipe and heat-conducting plate.

[0029] Figure 8 This is a schematic diagram of the structure of the heat-conducting plate and the heat-retaining plate.

[0030] Reference numerals: 1. Evaporator equipment; 10. Motor; 11. Crankshaft; 12. Bearing; 13. Mounting plate; 14. Piston rod; 15. Piston cylinder; 16. Angled suction pipe; 17. Liquid outlet pipe; 19. Liquid storage box; 20. Return pipe; 21. Liquid inlet pipe; 22. Straight connecting pipe; 23. Fixed plate; 24. S-shaped heat conduction pipe; 25. Heat conduction plate; 250. Slow retention plate; 26. Hot oil output pipe; 27. Steam outlet pipe; 28. Heat conduction oil circulation pipe; 29. ​​Heat monitor; 30. Hot liquid storage tank; 31. Hot oil input pipe.

[0031] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0032] The following is a detailed description of an evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, provided by the present invention, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0033] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0034] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0035] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0036] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0037] like Figures 1 to 8As shown, an embodiment of the present invention provides an evaporator for recycling ammonium chloride, a byproduct of manganese carbonate. The evaporator includes an evaporator device 1. A motor 10 is installed on one side of the evaporator device 1. The output end of the motor 10 is inserted into the inner wall of one side of the evaporator device 1. A crank rod 11 is installed on the output end of the motor 10. A bearing 12 is provided at the end of the crank rod 11. One end of the bearing 12 is rotatably connected to a mounting plate 13. Multiple piston rods 14 are installed at the bottom of the mounting plate 13. A piston cylinder 15 is sleeved at the bottom of the piston rod 14. An inclined suction tube 16 is provided at the bottom end of the piston cylinder 15. A liquid outlet pipe 17 is installed on one side of the bottom of the piston cylinder 15. A liquid storage box 19 is inserted into the top end of the inclined suction tube 16. A straight connecting pipe 22 is fixedly connected to the bottom end of the liquid outlet pipe 17. Multiple S-shaped heat-conducting pipes 24 are installed at the bottom end of the straight connecting pipe 22. The modularly designed S-shaped heat-conducting pipes 24 can... Single-tube replacement is achieved, significantly reducing maintenance downtime. The inclined suction pipe 16 uses a quick-release flange connection, extending the cleaning cycle. The bottom of the S-shaped heat-conducting pipe 24 is inserted into the partition plate, and its bottom end is close to the bottom surface of the hydrothermal storage tank 30. A steam outlet pipe 27 is installed on one side of the hydrothermal storage tank 30. The valve of the steam outlet pipe 27 adopts a pneumatic quick-opening design, resulting in a fast steam discharge response time. A heat-conducting plate 25 is inserted into one side and the inner wall of the S-shaped heat-conducting pipe 24, and a buffer plate 2 is installed at the front end of the heat-conducting plate 25. 50. The return pipe 20 reintroduces the substandard hot liquid back into the circulation, ensuring that the solution reaches a fully supersaturated state, thus improving the ammonium chloride crystallization recovery rate. The other side of the storage box 19 is equipped with an inlet pipe 21. The storage box 19 is fixed to the inner wall of the evaporator equipment 1 through the inlet pipe 21. The suction / extrusion mechanism composed of the crank 11 and piston rod 14 driven by the motor 10 realizes the forced circulation of hot liquid between the S-shaped heat conduction pipe 24 and the storage box 19. Compared with traditional steam heating, it is more energy-efficient and has higher heating uniformity.

[0038] like Figures 2 to 7 As shown, a return pipe 20 is installed on one side of the liquid storage box 19, and an inlet pipe 21 is installed on the other side of the liquid storage box 19. The liquid storage box 19 is fixed to the inner wall of the evaporator device 1 through the inlet pipe 21. The number of straight connecting pipes 22 is set to multiple, and a fixing plate 23 is sleeved on the outer surface of each of the multiple straight connecting pipes 22. A hot liquid storage tank 30 is installed at the bottom of the evaporator device 1. A partition is installed on the top of the hot liquid storage tank 30. The partition is made of heat insulation material. A steam outlet pipe 27 is installed on one side of the hot liquid storage tank 30. A heat transfer oil circulation pipe 28 is inserted and installed on one side of the evaporator device 1 and at the center of the fixing plate 23. The heat transfer oil circulation pipe 28 is located at the center of multiple S-shaped heat transfer pipes 24.

[0039] like Figures 2 to 8As shown, a heat monitor 29 is installed around the inner side of the hydrothermal storage tank 30. There is a gap between the heat monitor 29 and the S-shaped heat pipe 24 to prevent the temperature of the S-shaped heat pipe 24 from affecting the normal operation of the heat monitor 29. A hot oil output pipe 26 is installed on one side of the evaporator device 1, and the bottom end of the hot oil output pipe 26 is fixedly connected to the top end of the heat transfer oil circulation pipe 28. A hot oil input pipe 31 is installed on the back of the evaporator device 1. The bottom end of the return pipe 20 is inserted into one side of the hydrothermal storage tank 30. The outer wall of the hydrothermal storage tank 30 is provided with a heat insulation layer to reduce heat loss and prevent burns caused by excessively high temperatures on the outer wall of the equipment. The pure nickel heat-conducting components are corrosion-resistant and can resist the corrosion of ammonium chloride solution. The heat pipe 24 and heat-conducting plate 25 are made of pure nickel, which is resistant to chloride ion corrosion and has high thermal conductivity. Combined with the turbulent design of the inclined suction pipe 16, the scaling rate on the pipe wall is reduced. The inclined suction pipe 16 and the straight connecting pipe 22 have built-in reverse one-way valves to avoid local crystallization blockage caused by solution backflow. The front end of the heat-conducting plate 25 is equipped with a buffer plate 250. Multiple sets of buffer plates 250 are set. The buffer plates 250 are L-shaped and multiple in number, and are vertically arranged on the heat-conducting plate 25. Closed-loop heating makes the solution supersaturation more stable, improves the crystallization recovery rate, increases the mother liquor reuse ratio, and improves the raw material utilization rate compared with traditional processes. The S-shaped heat pipe 24 and heat-conducting plate 25 are made of pure nickel, and multiple sets of buffer plates 250 are set. The buffer plates 250 are L-shaped.

[0040] The working principle of the technical solution provided by this invention is as follows:

[0041] First, the solution is pumped by connecting the inlet pipe 21 to the solution feeding equipment. The output end of the heat transfer oil generating equipment is connected to the hot oil inlet pipe 31 to input heat transfer oil. The top end of the hot oil outlet pipe 26 is connected to the end of the circulation inlet pipe of the heat transfer oil generating equipment through the liquid pump. The heat transfer oil is absorbed through the hot oil outlet pipe 26 and the heat transfer oil circulation pipe 28. Then, after the evaporator equipment 1 is filled with heat transfer oil, the heat transfer oil is extracted through the hot oil outlet pipe 26 and the heat transfer oil circulation pipe 28 and pumped through the hot oil inlet pipe 31 to always maintain a sufficient temperature of heat transfer oil in the evaporator equipment 1.

[0042] The solution is then pumped into the storage box 19 through the inlet pipe 21, and the start motor 10 drives the crank 11 to rotate clockwise. Through the rotation path of the crank 11, the crank 11 will drive the bearing 12 and the mounting plate 13 to float up and down. The mounting plate 13 simultaneously drives the piston rod 14 to suck and squeeze up and down in the piston cylinder 15.

[0043] The solution in the storage box 19 is drawn into the piston cylinder 15 through the inclined suction tube 16 connected to the bottom end of the piston cylinder 15. When the piston rod 14 is pushed downward, because the inner walls of the inclined suction tube 16 and the straight connecting tube 22 are equipped with opposite one-way valves, the liquid can only be drawn in and pushed out in one direction. When pushed downward, the solution in the piston cylinder 15 is pushed down through the straight connecting tube 22 and enters and fills the S-shaped heat conduction tube 24. When the solution flows along the internal path of the S-shaped heat conduction tube 24, it passes through the buffer plate 250. The structure of the multiple buffer plates 250 generates a vortex, which reduces the flow rate of the solution. The heating time of the flowing solution by the S-type heat pipe 24 and heat-conducting plate 25 is increased. In the evaporator equipment 1, heat is conducted to the heat-conducting oil through the heat-conducting plate 25 inserted into the surface of the S-type heat pipe 24. Since the connection between the S-type heat pipe 24 and the heat-conducting plate 25 is well sealed, the solution and the heat-conducting oil will not leak and mix. The S-type heat pipe 24 and the heat-conducting plate 25 are made of pure nickel material with high thermal conductivity and corrosion resistance, which has a good thermal conductivity effect. The solution in the S-type heat pipe 24 is continuously heated by the heat of the heat-conducting oil. Finally, the solution enters the hot liquid storage tank 30 through the bottom end of the S-type heat pipe 24.

[0044] At this time, the motor 10 drives the crank 11 to rotate clockwise. Through the rotation path of the crank 11, the crank 11 will drive the bearing 12 and the mounting plate 13 to float up and down, driving the piston rod 14 to suck and squeeze up and down in the piston cylinder 15. When sucking upward, a part of the heated solution in the hot liquid storage tank 30 will be drawn back to the storage box 19 through the return pipe 20. It will be mixed with the new solution pumped at the inlet pipe 21 in the storage box 19. Then it will be sucked into the piston cylinder 15 again by the inverted inclined suction pipe 16. In this process, it will be mixed with the heated solution and heated for a second time to achieve the effect of preheating the new solution. This cycle of heating improves the heating effect of the subsequent solution and makes the heating speed and heating temperature of the solution more uniform.

[0045] Finally, when the heat monitor 29 detects that the hydrothermal storage tank 30 has reached the target value, the valve at the steam outlet pipe 27 is opened to discharge the steam generated by the high temperature of the solution. The steam enters the next stage of processing, and the operation of the motor 10 is paused. After the steam is discharged, when the temperature in the hydrothermal storage tank 30 drops to the point where steam can no longer be discharged, the steam outlet pipe 27 is closed, and the motor 10 is turned on again to heat the solution in the same way. This cycle is repeated. After the ammonium chloride solution is heated by the evaporator, it enters the next stage for concentration through the external connection of the steam outlet pipe 27 to other equipment. It then enters the OSLO crystallizer to be cooled to the saturation temperature to precipitate crystals. After the crystal slurry is filtered and separated, the mother liquor is returned to the evaporation system for recycling.

[0046] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0047] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, comprising evaporator equipment (1), characterized in that, A motor (10) is installed on the outer side of the evaporator device (1). The output end of the motor (10) is inserted into the inner wall of one side of the evaporator device (1). A crank (11) is installed on the output end of the motor (10). A bearing (12) is provided at the end of the crank (11). A mounting plate (13) is rotatably connected to one end of the bearing (12). Multiple piston rods (14) are installed at the bottom of the mounting plate (13). A piston cylinder (15) is sleeved at the bottom of the piston rod (14). An inclined suction tube (16) is provided at the bottom end of the piston cylinder (15). A liquid outlet pipe (17) is installed on one side of the bottom of the piston cylinder (15). A liquid storage box (19) is inserted at the top end of the inclined suction tube (16). The bottom of the evaporator device (1) is equipped with a hydrothermal storage tank (30), and the top of the hydrothermal storage tank (30) is equipped with a partition. The bottom end of the outlet pipe (17) is fixedly connected to a straight connecting pipe (22). Multiple S-shaped heat conduction pipes (24) are installed at the bottom end of the straight connecting pipe (22). The bottom of the S-shaped heat conduction pipes (24) is inserted into the partition plate, and the bottom end of the S-shaped heat conduction pipes (24) is close to the bottom surface of the hydrothermal storage tank (30). A steam outlet pipe (27) is installed on one side of the hydrothermal storage tank (30). A heat conduction plate (25) is inserted into one side and the inner wall of the S-shaped heat conduction pipe (24). A buffer plate (250) is installed at the front end of the heat conduction plate (25). A reflux pipe (20) is installed on one side of the liquid storage box (19), and the bottom end of the reflux pipe (20) is inserted into one side of the hot liquid storage tank (30). An inlet pipe (21) is installed on the other side of the liquid storage box (19), and the liquid storage box (19) is fixed to the inner wall of the evaporator device (1) through the inlet pipe (21).

2. The evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, according to claim 1, is characterized in that, The number of the straight connecting pipes (22) is set to multiple, and the outer surface of each of the multiple straight connecting pipes (22) is fitted with a fixing plate (23).

3. The evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, according to claim 1, is characterized in that, The partition is made of heat-insulating material.

4. The evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, according to claim 2, is characterized in that, A heat transfer oil circulation pipe (28) is inserted and installed on one side of the evaporator device (1) and at the center of the fixed plate (23). The heat transfer oil circulation pipe (28) is located at the center of multiple S-shaped heat transfer pipes (24).

5. The evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, according to claim 4, is characterized in that, A heat monitor (29) is installed around the inside of the hydrothermal storage tank (30), and there is a gap between the heat monitor (29) and the S-shaped heat pipe (24).

6. The evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, according to claim 5, is characterized in that, A hot oil output pipe (26) is installed on one side of the evaporator device (1), and the bottom end of the hot oil output pipe (26) is fixedly connected to the top end of the heat transfer oil circulation pipe (28). A hot oil input pipe (31) is installed on the back of the evaporator device (1).

7. The evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, according to claim 1, is characterized in that, The outer wall of the hydrothermal storage tank (30) is provided with a heat insulation layer.

8. The evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, according to claim 1, is characterized in that, The S-shaped heat pipe (24) and heat-conducting plate (25) are made of pure nickel, and multiple sets of the buffer plate (250) are provided.

9. The evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, according to claim 1, is characterized in that, The shape of the buffer plate (250) is L-shaped, and the number of buffer plates (250) is multiple, and they are vertically arranged and installed on the heat-conducting plate (25).

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