Evaporator for recycling manganese carbonate byproduct ammonium chloride

Abstract

The invention provides an evaporator for recycling a manganese carbonate byproduct ammonium chloride, and belongs to the technical field of ammonium chloride production. Comprising evaporator equipment, a motor is installed on one side of the exterior of the evaporator equipment, the output end of the motor is connected to the inner wall of one side of the evaporator equipment in an inserted mode, a curved bar is installed at the output end of the motor, and a bearing is arranged at the end of the curved bar. By adopting a heat-conducting oil circulating heating mode, a complete steam supply system is not required to be matched, only heat-conducting oil generation equipment and a return pipeline need to be butted, the flowing property of a solution is improved, meanwhile, the contact time of the heat-conducting oil and the solution is prolonged, and the solution is prevented from going bad or being crystallized in advance due to local overheating; compared with traditional steam heating, the forced circulation of the hydrothermal solution between the S-shaped heat conduction pipe and the liquid storage box is achieved, more energy is saved, the heating uniformity is high, the substandard hydrothermal solution is guided into circulation again through the backflow pipe, it is ensured that the solution fully reaches the supersaturated state, and the ammonium chloride crystallization recovery rate is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ammonium chloride production, in particular to an evaporator for recycling ammonium chloride by-product of manganese carbonate. BACKGROUND

[0002] The core principle of the evaporator for recycling ammonium chloride is to use the "evaporation-concentration-crystallization" process to remove water from the ammonium chloride solution by heating, so that the solution reaches a supersaturated state and ammonium chloride crystals are precipitated, and finally solid-liquid separation and ammonium chloride recovery are achieved. The patent publication CN218011163U discloses a concentration and crystallization equipment for purifying ammonium chloride. When the hollow motor is working, it drives the rotating tube, the first rotating rod, the rotating rod and the second rotating rod to rotate. When the second rotating rod rotates, it stirs the heat-conducting oil in the heating cavity. The first rotating rod rotates to stir the solution in the concentration shell, which helps to improve the concentration efficiency. When cooling, the condensate flowing in the spiral cooling pipe cools the crystallization shell. When the temperature is lowered to the appropriate temperature, ammonium chloride crystals are precipitated in the crystallization shell. Finally, after solid-liquid separation through the filter assembly, the precipitated ammonium chloride crystals are retained in the filter assembly, and the waste liquid is discharged through the discharge pipe. The temperature sensor facilitates real-time monitoring of the temperature in the concentration shell or the crystallization shell by personnel. Before the solution enters the concentration shell, the filter is used to filter the solution, which further improves the purification effect of the ammonium chloride crystals. However, when the heat-conducting oil heats the ammonium chloride solution, the contact between the heat-conducting oil and the solution is not sufficient, and the flowability of the solution is not good, which can easily cause clumping. At the same time, the new solution is not preheated before heating, which prolongs the heating time and reduces the efficiency of ammonium chloride recovery.

[0003] Therefore, the present application provides an evaporator for recycling ammonium chloride by-product of manganese carbonate to meet the needs. SUMMARY

[0004] The technical problem to be solved by the present application is to provide an evaporator for recycling ammonium chloride by-product of manganese carbonate to solve the problem that when the heat-conducting oil heats the ammonium chloride solution, the flowability of the solution is not good, which can easily cause clumping. At the same time, the new solution is not preheated before heating, which prolongs the heating time.

[0005] To solve the above technical problems, the present application provides the following technical solutions: The utility model provides an evaporimeter recycling ammonium chloride byproduct of manganese carbonate, including evaporimeter equipment, the outside one side of evaporimeter equipment is installed motor, the output of motor is inserted in one side inner wall of evaporimeter equipment, the output of motor is installed curved rod, the end of curved rod is provided with bearing, one end of bearing is rotatably connected with mounting disc, the bottom of mounting disc is installed a plurality of piston rods, the bottom of piston rod is sleeved with piston cylinder, the bottom of piston cylinder is provided with inclined suction tube, the bottom one side of piston cylinder is installed liquid outlet pipe, the top end of inclined suction tube is inserted with liquid storage box, the bottom end of liquid outlet pipe is fixedly connected with through connection pipe, the bottom end of through connection pipe is installed a plurality of S type heat pipe, the one side of S type heat pipe and inner wall is inserted with heat conduction sheet, the front end of heat conduction sheet is installed buffer plate.

[0006] Optionally, one side of the liquid storage box is installed with a return pipe, the other side of the liquid storage box is installed with a liquid inlet pipe, and the liquid storage box is fixed to the inner wall of the evaporimeter equipment through the liquid inlet pipe.

[0007] Optionally, the number of the through connection pipes is multiple, and the outer surfaces of the multiple through connection pipes are sleeved with fixing discs.

[0008] Optionally, the bottom end of the S type heat pipe is inserted into the partition plate, and the bottom end of the S type heat pipe is adjacent to the bottom surface of the hot liquid storage tank.

[0009] Optionally, the bottom end of the S type heat pipe is inserted into the partition plate, and the bottom end of the S type heat pipe is adjacent to the bottom surface of the hot liquid storage tank.

[0010] Optionally, the one side of the evaporimeter equipment and the center of the fixing disc are inserted and installed with a heat conduction oil circulation pipe, and the heat conduction oil circulation pipe is arranged at the center of the multiple S type heat pipes.

[0011] Optionally, the inner side of the hot liquid storage tank is annularly installed with a heat monitor, and the heat monitor is spaced from the S type heat pipes.

[0012] Optionally, the one side of the evaporimeter equipment is installed with a hot oil output pipe, the bottom end of the hot oil output pipe is fixedly connected with the top end of the heat conduction oil circulation pipe, and the back of the evaporimeter equipment is installed with a hot oil input pipe.

[0013] Optionally, the bottom end of the return pipe is inserted into the one side of the hot liquid storage tank, and the outer wall of the hot liquid storage tank is provided with a heat preservation layer.

[0014] Optionally, the materials of the S type heat pipes and the heat conduction sheets are pure nickel materials, the buffer plates are provided in multiple groups, the shapes of the buffer plates are L-shaped, the number of the buffer plates is multiple, and the buffer plates are vertically arranged on the heat conduction sheets.

[0015] Compared with the prior art, the present application has at least the following beneficial effects: In the above scheme, by adopting the heating mode of circulating heat conduction oil, it is not necessary to match a complete steam supply system, only the heat conduction oil generating device and the return pipeline need to be connected, which greatly reduces the complexity of the device system, reduces the initial investment cost, the structure of the heat conduction oil circulating system is more simple, compared with the multiple components of the steam system, the maintenance of the heat conduction oil output pipeline and the hot liquid storage tank is more convenient, the replacement frequency and maintenance time of the parts are reduced, the long-term operation cost is lower, the problem of local overheating is solved, the heat is uniformly transmitted to the ammonium chloride solution through the S-shaped heat conduction pipe and the heat conduction sheet of pure nickel material by forced circulation of the heat conduction oil in the evaporator device, the problem of uneven temperature caused by open flame heating or local heating is avoided, and the solution is prevented from deteriorating or crystallizing prematurely due to local overheating.

[0016] By setting a uniform heating environment, local crystallization and scaling of ammonium chloride in the inner wall of the pipeline can be avoided, the risk of pipeline blockage is reduced, the service life of the S-shaped heat conduction pipe, the straight-through connecting pipe and other core components is prolonged, and the continuous operation time of the equipment is improved without frequent shutdown for cleaning scaling.

[0017] By the suction-extrusion mechanism composed of the motor-driven curved rod, the piston rod and the piston cylinder, the substandard heated solution in the hot liquid storage tank is sucked back into the storage box through the return pipe, and is re-heated in the S-shaped heat conduction pipe, so that the solution finally reaches the supersaturated state, the solution waste caused by insufficient heating is reduced, the crystallization recovery rate of ammonium chloride is improved, and a part of the heated solution in the hot liquid storage tank is sucked back into the storage box through the return pipe, mixed with the new solution pumped at the liquid inlet pipe, and heated for the second time, so that the new solution is preheated, and the heating effect on the subsequent solution is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present application and, together with the description, further serve to explain the principles of the present application and to enable a skilled artisan to make and use the present application.

[0019] Figure 1 is a schematic view of the three-dimensional structure of the evaporator; Figure 2 is a schematic view of the three-dimensional structure of the evaporator; Figure 3 is a schematic view of the three-dimensional structure of the evaporator; Figure 4It is a schematic diagram of the structure of the liquid storage box, piston cylinder and oblique straw; Figure 5 It is a structural diagram of the S-shaped heat pipe and the heat transfer oil circulation pipe; Figure 6 for Figure 5 A is an enlarged schematic diagram; Figure 7 The internal cross-sectional view of the S-shaped heat pipe and heat conducting sheet; Figure 8 Schematic diagram of the structure of the heat conducting plate and the retention plate.

[0020] Figure numerals: 1. Evaporator equipment; 10. Motor; 11. Crank rod; 12. Bearing; 13. Mounting plate; 14. Piston rod; 15. Piston cylinder; 16. Oblique suction pipe; 17. Liquid outlet pipe; 19. Liquid storage box; 20. Return pipe; 21. Liquid inlet pipe; 22. Straight-through connecting pipe; 23. Fixed plate; 24. S-shaped heat pipe; 25. Heat conducting plate; 250. Retention plate; 26. Hot oil output pipe; 27. Steam outlet pipe; 28. Heat transfer oil circulation pipe; 29. ​​Heat monitor; 30. Hot liquid storage tank; 31. Hot oil input pipe.

[0021] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0022] The following describes in detail 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 is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are provided solely for the purpose of describing the embodiments in greater detail and are not intended to limit the present invention.

[0023] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0024] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0025] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0026] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0027] like Figures 1 to 8As shown, an embodiment of the present invention provides an evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, including an evaporator device 1, a motor 10 is installed on one side of the outside of the evaporator device 1, the output end of the motor 10 is plugged 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, a plurality of piston rods 14 are installed at the bottom of the mounting plate 13, and the motor 10 is connected to the outer side of the evaporator device 1. The bottom of the piston rod 14 is sleeved with a piston cylinder 15, and the bottom end of the piston cylinder 15 is provided with an oblique suction pipe 16. A liquid outlet pipe 17 is installed on one side of the bottom of the piston cylinder 15. The top of the oblique suction pipe 16 is plugged with a liquid storage box 19. The bottom end of the liquid outlet pipe 17 is fixedly connected to a straight connecting pipe 22, and the bottom end of the straight connecting pipe 22 is installed with a plurality of S-shaped heat conducting pipes 24. The modularly designed S-shaped heat conducting pipes 24 can be A single pipe replacement is achieved, and the maintenance downtime is greatly shortened. The oblique suction pipe 16 adopts a quick-release flange connection, and the cleaning cycle is extended. The bottom of the S-shaped heat pipe 24 is plugged into the partition, and the bottom end is close to the bottom surface of the hot liquid storage tank 30. A steam outlet pipe 27 is installed on one side of the hot liquid storage tank 30. The valve of the steam outlet pipe 27 adopts a pneumatic quick-opening design, and the steam discharge response time is fast. A heat conducting plate 25 is plugged into one side and the inner wall of the S-shaped heat conducting pipe 24, and a retention plate 2 is installed at the front end of the heat conducting plate 25. 50. The reflux pipe 20 re-introduces the substandard hot liquid into the circulation to ensure that the solution is fully supersaturated and the recovery rate of ammonium chloride crystals is improved. A liquid 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 liquid inlet pipe 21. The motor 10 drives the suction / extrusion mechanism composed of the curved rod 11-piston rod 14 to realize the forced circulation of the hot liquid between the S-shaped heat conducting pipe 24 and the liquid storage box 19. Compared with traditional steam heating, it is more energy-saving and has higher heating uniformity.

[0028] like Figures 2 to 7 As shown, a return pipe 20 is installed on one side of the liquid storage box 19, and a liquid 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 liquid inlet pipe 21. The number of the straight-through connecting pipes 22 is set to multiple, and the outer surfaces of the multiple straight-through connecting pipes 22 are all sleeved with a fixed disk 23. A hot liquid storage tank 30 is installed at the bottom end of the evaporator device 1, and a partition is installed on the top of the hot liquid storage tank 30. The partition is set to an insulating material, and 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 installed on one side of the evaporator device 1 and the center of the fixed disk 23. The heat transfer oil circulation pipe 28 is arranged at the center of multiple S-shaped heat transfer pipes 24.

[0029] like Figures 2 to 8As shown, a heat monitor 29 is installed on the inner side of the hot liquid storage tank 30 in a surrounding manner. 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. The bottom end of the hot oil output pipe 26 is fixedly connected to the top 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 plugged into one side of the hot liquid storage tank 30. The outer wall of the hot liquid storage tank 30 is provided with a thermal insulation layer. The outer wall of the hot liquid storage tank 30 is provided with a thermal insulation layer, which reduces heat loss and avoids the risk of burns to personnel caused by excessive temperature of the outer wall of the equipment. The heat-conducting components made of pure nickel are corrosion-resistant and can resist the erosion of ammonium chloride solution. The S-shaped The material of the heat pipe 24 and the heat conducting sheet 25 is set to pure nickel material, which is resistant to chloride ion corrosion and has high thermal conductivity. The turbulent design of the oblique suction pipe 16 reduces the scaling rate of the tube wall. The oblique suction pipe 16 and the straight connecting pipe 22 are built-in with a reverse one-way valve to avoid local crystallization blockage caused by solution backflow. A retention plate 250 is installed at the front end of the heat conducting sheet 25. The retention plates 250 are arranged in multiple groups, and the shape of the retention plates 250 is set to L-shaped. The number of retention plates 250 is set to multiple and is vertically arranged on the heat conducting sheet 25. Closed-loop heating makes the solution supersaturation more stable, the crystallization recovery rate is improved, the mother liquor reuse ratio is high, and the raw material utilization rate is improved compared with the traditional process. The material of the S-shaped heat pipe 24 and the heat conducting sheet 25 is set to pure nickel material, the retention plates 250 are arranged in multiple groups, and the shape of the retention plates 250 is set to L-shaped.

[0030] The working principle of the technical solution provided by the present invention is: First, the solution is pumped by connecting the liquid inlet pipe 21 to the solution feeding equipment, the hot oil input pipe 31 is connected to the output end of the thermal oil generating equipment to input thermal oil, the top end of the hot oil output pipe 26 is connected to the end of the circulation input pipe of the thermal oil generating equipment through a liquid pump, and the thermal oil is absorbed through the hot oil output pipe 26 and the thermal oil circulation pipe 28. Subsequently, after the evaporator equipment 1 is filled with thermal oil, the thermal oil is extracted through the hot oil output pipe 26 and the thermal oil circulation pipe 28, and pumped using the hot oil input pipe 31, so as to always keep the thermal oil in the evaporator equipment 1 at a sufficient temperature.

[0031] The solution is then pumped into the liquid storage box 19 through the liquid inlet pipe 21, and by starting the motor 10, the curved rod 11 is driven to rotate back and forth clockwise. Through the rotation path of the shape of the curved rod 11, the curved rod 11 will drive the bearing 12 and the mounting plate 13 to float up and down, and the mounting plate 13 will simultaneously drive the piston rod 14 to suck and squeeze up and down in the piston cylinder 15.

[0032] The solution in the liquid storage box 19 is sucked into the piston cylinder 15 through the oblique suction pipe 16 connected to the bottom end of the piston cylinder 15. When the piston rod 14 is pushed down, the liquid can only be sucked in and squeezed out in one direction because the end wall of the oblique suction pipe 16 and the straight connection pipe 22 are both equipped with opposite one-way valves. When pushed down, the solution in the piston cylinder 15 is squeezed out through the straight connection pipe 22 and enters and fills the S-shaped heat pipe 24. When the solution flows along the internal path of the S-shaped heat pipe 24, it forms a vortex through the multiple vortex plates 250, which reduces the flow speed of the solution and increases the heating time of the flowing solution by the S-shaped heat pipe 24 and the heat-conducting sheet 25. In the evaporator device 1, the heat-conducting sheet 25 inserted into the surface of the S-shaped heat pipe 24 conducts heat with the heat-conducting oil. Since the S-shaped heat pipe 24 is sealed at the insertion position of the heat-conducting sheet 25, the solution and the heat-conducting oil will not leak and mix. The S-shaped heat pipe 24 and the heat-conducting sheet 25 are made of pure nickel material with high heat-conducting and corrosion-resistant properties, which has good heat-conducting effect. The heat of the heat-conducting oil continuously heats the solution in the S-shaped heat pipe 24. Finally, the solution enters the hot liquid storage tank 30 through the bottom end of the S-shaped heat pipe 24.

[0033] At this time, the motor 10 drives the curved rod 11 to rotate clockwise. Through the shape of the rotating path of the curved rod 11, the curved rod 11 will drive the bearing 12 and the mounting disc 13 to float up and down, and drive the piston rod 14 to suck and squeeze in the piston cylinder 15. When sucking up, a part of the heated solution in the hot liquid storage tank 30 will be sucked back into the liquid storage box 19 through the return pipe 20, and the new solution will be pumped into the liquid storage box 19 through the liquid inlet pipe 21. The new solution is mixed in the liquid storage box 19, and then is sucked into the piston cylinder 15 by the inverted oblique suction pipe 16. In this process, the heated solution is mixed and heated again, achieving the effect of preheating the new solution. This cycle of heating improves the heating effect of the subsequent solution, making the heating speed and temperature of the solution more uniform.

[0034] Finally, when the heat monitor 29 detects that the hot liquid storage tank 30 reaches the target value, the valve at the steam outlet pipe 27 is opened to discharge the steam generated by the high-temperature solution. The steam enters the next stage of processing, and the motor 10 is temporarily stopped. After the steam is discharged, the temperature in the hot liquid storage tank 30 drops to a temperature that cannot discharge steam, and the steam outlet pipe 27 is closed. The motor 10 is continued to be turned on to heat the solution in the same way. This cycle is repeated, and the ammonium chloride solution heated by the evaporator is connected to subsequent other equipment through the steam outlet pipe 27 and enters the next stage for concentration. The solution is cooled to saturation temperature in the OSLO crystallizer to precipitate crystals. The crystal slurry is filtered and separated, and the mother liquor returns to the evaporation system for recycling.

[0035] The present application encompasses any alternatives, modifications, equivalent methods and solutions made to the essence and scope of the present application. In order to make the public have a thorough understanding of the present application, specific details are described in the following preferred embodiments of the present application, and the present application can also be fully understood without the description of these details to those skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the present application, well-known methods, processes, procedures, elements and circuits, etc. are not described in detail.

[0036] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can also be made, which should be considered as the protection scope of the present application.

Claims

1. An evaporator for recycling ammonium chloride, a byproduct of manganese carbonate, comprising an evaporator device (1), characterized in that: A motor (10) is installed on one side of the outside of the evaporator device (1), and the output end of the motor (10) is plugged 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), and 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), and a plurality of piston rods (14) are installed at the bottom of the mounting plate (13). The bottom of the piston rod (14) is sleeved with a piston cylinder (15), and the bottom end of the piston cylinder (15) is provided with an oblique suction pipe (16). A liquid outlet pipe (16) is installed on one side of the bottom of the piston cylinder (15). 7), a liquid storage box (19) is plugged into the top end of the oblique suction pipe (16), a straight connecting pipe (22) is fixedly connected to the bottom end of the liquid outlet pipe (17), a plurality of S-shaped heat conducting pipes (24) are installed at the bottom end of the straight connecting pipe (22), a heat conducting sheet (25) is plugged into one side and the inner wall of the S-shaped heat conducting pipe (24), a retention plate (250) is installed at the front end of the heat conducting sheet (25), a return pipe (20) is installed on one side of the liquid storage box (19), a liquid 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 liquid inlet pipe (21).

2. The evaporator for recycling ammonium chloride as a byproduct of manganese carbonate according to claim 1, wherein: The number of the straight-through connecting pipes (22) is set to be multiple, and the outer surfaces of the multiple straight-through connecting pipes (22) are all sleeved with a fixing disk (23).

3. The evaporator for recycling ammonium chloride as a byproduct of manganese carbonate according to claim 2, wherein: A hot liquid storage tank (30) is installed at the bottom end of the evaporator device (1), and a partition is installed at the top of the hot liquid storage tank (30), and the partition is set to a heat-insulating material.

4. The evaporator for recycling ammonium chloride as a byproduct of manganese carbonate according to claim 3, wherein: The bottom of the S-shaped heat conducting pipe (24) is plugged into the partition, and the bottom end of the S-shaped heat conducting pipe (24) is adjacent to the bottom surface of the hot liquid storage tank (30). A steam outlet pipe (27) is installed on one side of the hot liquid storage tank (30).

5. The evaporator for recycling ammonium chloride as a byproduct of manganese carbonate according to claim 4, wherein: A heat transfer oil circulation pipe (28) is plugged 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 arranged at the center of the plurality of S-shaped heat transfer pipes (24).

6. The evaporator for recycling ammonium chloride as a byproduct of manganese carbonate according to claim 5, characterized in that: A heat monitor (29) is installed in a surrounding manner on the inner side of the hot liquid storage tank (30), and a gap is formed between the heat monitor (29) and the S-shaped heat pipe (24).

7. The evaporator for recycling ammonium chloride as a byproduct of manganese carbonate according to claim 6, 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).

8. The evaporator for recycling ammonium chloride as a byproduct of manganese carbonate according to claim 1, characterized in that: The bottom end of the return pipe (20) is plugged into one side of the hot liquid storage tank (30), and the outer wall of the hot liquid storage tank (30) is provided with a heat insulation layer.

9. The evaporator for recycling ammonium chloride as a byproduct of manganese carbonate according to claim 1, characterized in that: The material of the S-shaped heat conducting pipe (24) and the heat conducting plate (25) is set to be pure nickel material, and the retention plates (250) are provided in multiple groups.

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

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