Energy-saving and consumption-reducing device for recycling manganese carbonate washing water and condensate water

Abstract

The utility model discloses an energy-saving and consumption-reducing device for recycling manganese carbonate washing water and condensate water, and belongs to the technical field of washing water recycling. The device comprises a raw material preparation unit, a manganese carbonate synthesis tank, a first filter press, a manganese carbonate slurrying tank, a second filter press, a washing water tank and an evaporation and condensation water tank, the manganese carbonate synthesis tank is used for synthesizing manganese carbonate through a carbonate solution and a manganese solution, the first filter press is used for receiving a discharge product of the manganese carbonate synthesis tank and separating to obtain filter residues and filtrate, and the manganese carbonate slurrying tank is used for receiving the filter residues; the second filter press is used for receiving a discharge product of the manganese carbonate slurrying tank and separating to obtain filter residues and filtrate; the washing water tank is used for receiving filtrate separated by the second filter press; the evaporation and condensation water tank is used for receiving steam which is introduced into the manganese carbonate synthesis tank and is used for heating, liquefying the cooled steam and then respectively conveying the liquefied steam to the first filter press, the manganese carbonate slurrying tank and the second filter press through pipelines.

Description

Technical Field

[0001] This utility model belongs to the field of washing water reuse technology, and more specifically, relates to an energy-saving and consumption-reducing device for the reuse of manganese carbonate washing water and condensate. Background Technology

[0002] Manganese carbonate is a raw material for manufacturing soft magnetic ferrites for telecommunications equipment, as well as for synthesizing manganese dioxide, producing electrolytic manganese metal, and manufacturing other manganese salts. It can also be used as a desulfurization catalyst, and as a pigment in porcelain glazes, coatings, and varnishes. In addition, manganese carbonate is used as a fertilizer and feed additive, and can also be used in medicine and as an auxiliary material for welding electrodes. The preparation of manganese carbonate generally involves reducing manganese dioxide to divalent manganese with a reducing agent and transferring it to a solution, where it reacts with bicarbonate or carbonate to form manganese carbonate precipitate. Finally, the product is obtained by rinsing, removing impurities, evaporating, concentrating, and crystallizing.

[0003] The synthesis of manganese carbonate requires frequent washing with clean water or temperature adjustment. Existing solutions directly discharge the washing water as wastewater into wastewater treatment facilities. For example, a Chinese invention patent document discloses an electrolytic manganese slag treatment device (CN202322737804.7). This invention involves feeding the manganese slag through a vibrating feeder, washing it in a primary washing tank, then the first wash filtrate enters a secondary washing tank for a second wash, the second wash filtrate enters a tertiary washing tank for a third wash, and the third wash filtrate enters a storage tank for reuse, effectively extracting soluble manganese and ammonium sulfate from the manganese slag. However, although this application reuses the filtrate, it still wastes a large amount of water. Furthermore, the direct use of steam or electric heating to heat the auxiliary materials and manganese carbonate synthesis results in high energy consumption and increased production costs.

[0004] Therefore, we need an energy-saving and consumption-reducing device for the reuse of manganese carbonate washing water and condensate, which is inexpensive and enables multiple uses of wastewater, thereby achieving the goals of energy conservation and emission reduction, environmental pollution reduction, cost reduction and efficiency improvement, and increased production benefits. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an energy-saving and consumption-reducing device for the reuse of manganese carbonate washing water and condensate. It is low in cost and achieves efficient reuse of wastewater through a condensate circulation system, thereby reducing resource waste, reducing energy consumption, and achieving the goals of energy conservation and emission reduction, reducing environmental pollution, reducing costs and increasing efficiency and production benefits.

[0006] This utility model discloses an energy-saving and consumption-reducing device for the reuse of manganese carbonate washing water and condensate, comprising a raw material preparation unit, a manganese carbonate synthesis tank, a first filter press, a manganese carbonate slurry tank, a second filter press, a washing water tank, and an evaporation condensate tank. The raw material preparation unit is connected to the manganese carbonate synthesis tank via pipelines. The manganese carbonate synthesis tank is used to synthesize manganese carbonate through a carbonate solution and manganese liquid. The first filter press is used to receive the output product of the manganese carbonate synthesis tank and separate it into filter residue and filtrate. The manganese carbonate slurry tank is connected to the first filter press via pipelines and is used to receive the filter residue. The second filter press is used to receive the output product of the manganese carbonate slurry tank and separate it into filter residue and filtrate.

[0007] The raw material preparation unit includes a carbonate dissolving tank and a manganese liquid storage tank. The carbonate dissolving tank includes a pure water inlet and a carbonate inlet for dissolving carbonates. The manganese liquid storage tank is used to store manganese liquid. The bottom of the carbonate dissolving tank is equipped with a carbonate outlet, and the bottom of the manganese liquid storage tank is equipped with a manganese liquid outlet. The two are connected to the manganese carbonate synthesis tank through pipelines.

[0008] The washing tank pipe is connected to the second filter press and is used to receive the filtrate separated by the second filter press.

[0009] The evaporation condensate tank is used to receive steam fed into the manganese carbonate synthesis tank for heating, and liquefies the cooled steam and then transports it through pipelines to the first filter press, the manganese carbonate slurry tank, and the second filter press.

[0010] As a further improvement of this utility model, the top of the manganese carbonate synthesis tank is provided with a carbonate inlet, a manganese liquid inlet, a steam inlet, and a steam outlet. The carbonate inlet and the manganese liquid inlet are respectively connected to the carbonate dissolving tank and the manganese liquid storage tank through pipes. The bottom of the manganese carbonate synthesis tank is provided with a first drain outlet, which is connected to a first filter press through a pipe. The manganese carbonate synthesis tank is provided with a steam pipe inside. One end of the steam pipe enters the manganese carbonate synthesis tank from the steam inlet and is transported to the evaporation condensate tank from the steam outlet.

[0011] As a further improvement of this utility model, the manganese carbonate synthesis tank also includes a stirring motor and a first stirring device. The stirring motor is detachably installed on the top of the manganese carbonate synthesis tank, and the output end of the stirring motor is detachably connected to the first stirring device for mixing carbonate solution and manganese liquid.

[0012] As a further improvement of this utility model, the first stirring device includes a stirring rod, a turbine stirrer, and a propeller stirrer; the turbine stirrer and the propeller stirrer are detachably mounted on the stirring rod; the propeller stirrer is located at the lower part of the turbine stirrer, and its blades are axially bent to generate an axial upward thrust on the water flow, ensuring the circulation of the carbonate solution and the manganese liquid; the turbine stirrer is located at the upper part of the propeller stirrer, and its blades act in the horizontal circumferential direction to generate circumferential rotation on the water flow, thereby enhancing the mixing effect of the carbonate solution and the manganese liquid.

[0013] As a further improvement of this utility model, the steam pipe is a pipe spirally distributed along the inner wall of the manganese carbonate synthesis tank, with an inlet end and an outlet end on both sides of the pipe. The outer wall of the inlet end fits into the inner wall of the steam inlet, and the outer wall of the outlet end fits into the inner wall of the steam outlet.

[0014] As a further improvement of this utility model, the top of the manganese carbonate slurry tank is provided with a filter residue inlet, a condensate inlet, and a clean water outlet; the filter residue inlet is used to receive the filter residue separated by the first filter press, the condensate inlet is used to receive the condensate collected by the evaporation condensate tank, and the clean water outlet is used to replenish the clean water required for the slurry process; the inside of the manganese carbonate slurry tank is provided with a second stirring device, which is used to uniformly stir the filter residue, condensate, and clean water to improve the slurry efficiency; the bottom of the manganese carbonate slurry tank is provided with a second drain outlet; the second drain outlet is connected to the pipeline of the second filter press, and a control valve group is provided between the second drain outlet and the second filter press to control the discharge rate of the liquid in the manganese carbonate slurry tank.

[0015] As a further improvement of this utility model, the top of the washing tank is provided with a filtrate inlet for receiving the filtrate separated by the second filter press; the inside of the washing tank is provided with a third stirring device for keeping the residual solid manganese carbonate microparticles in a suspended state through mechanical disturbance to prevent sedimentation and agglomeration at the bottom of the tank; the bottom of the washing tank is provided with a third drain outlet, which is connected to the washing outlet at the top of the carbonate dissolving tank through a pipe for conveying the stirred medium for reuse.

[0016] As a further improvement of this utility model, the steam pipe outlet is connected to the condensate steam inlet at the top of the evaporation condensate tank. The steam inside the steam pipe is cooled and liquefied in the manganese carbonate synthesis tank and collected inside the evaporation condensate tank. A fourth stirring device is provided inside the evaporation condensate tank to evenly stir the condensate and prevent the condensate temperature from being too high. A fourth drain outlet is provided at the bottom of the evaporation condensate tank. The fourth drain outlet is connected to the manganese carbonate slurry tank, the first filter press, and the second filter press through pipes.

[0017] As a further improvement of this utility model, the control valve group includes a pair of flow valves arranged in parallel. The parallel flow valves can be used simultaneously or individually to regulate the discharge rate of liquid in the slurry tank.

[0018] Compared with existing technologies, the advantages of this invention are as follows: By setting up an evaporation condensate tank to collect the steam used in the heating process of manganese carbonate synthesis, steam condensate is effectively recovered and used to filter and wash solid manganese carbonate. Since the washing water temperature is higher than that of room temperature water, the washing effect can be increased, and the amount of steam used for heating in the manganese carbonate synthesis process can be reduced. At the same time, the preparation of carbonates is accelerated, the reaction time is shortened, and the effect of increasing production and efficiency is achieved. By setting up a first stirring device that integrates a turbine agitator and a propeller agitator, the propeller agitator improves the axial mixing uniformity, and the turbine agitator improves the circumferential mixing uniformity, thereby improving the reaction efficiency. By setting up a pair of parallel flow valves as a control valve group, the parallel flow valves can be used simultaneously or individually, thereby more flexibly adjusting the discharge rate of liquid in the slurry tank. By connecting the fourth drain port of the evaporation condensate tank to the manganese carbonate slurry tank, the first filter press, and the second filter press through pipelines, the washed water is reused for the preparation of carbonates, realizing the multiple reuse of wastewater and realizing the multi-stage recycling of condensate, reducing water waste, and improving the environmental protection and economy of the overall process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the manganese carbonate synthesis tank structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the manganese carbonate synthesis tank of this utility model;

[0022] Figure 4 This is a schematic diagram of the manganese carbonate slurry tank structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the washing tank structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the evaporation condensate tank structure of this utility model.

[0025] Explanation of the labels in the diagram:

[0026] 1. Raw material preparation unit; 11. Carbonate dissolving tank; 111. Pure water inlet; 112. Carbonate inlet; 113. Carbonate outlet; 114. Wash water outlet; 12. Manganese liquid storage tank; 121. Manganese liquid outlet; 2. Manganese carbonate synthesis tank; 21. Carbonate inlet; 22. Manganese liquid inlet; 23. Steam inlet; 24. Steam outlet; 25. First drain outlet; 26. Steam pipe; 261. Air inlet; 262. Air outlet; 27. Stirring motor; 28. First stirring device; 28. 1. Stirring rod, 282. Turbine stirrer, 283. Propeller stirrer, 3. First filter press, 4. Manganese carbonate slurry tank, 41. Filter residue inlet, 42. Condensate inlet, 43. Clean water outlet, 44. Second stirring device, 45. Second drain outlet, 46. Control valve group, 5. Second filter press, 6. Washing water tank, 61. Filtrate inlet, 62. Third stirring device, 63. Third drain outlet, 7. Evaporation condensate tank, 71. Condensate steam inlet, 72. Fourth stirring device, 73. Fourth drain outlet. Detailed Implementation

[0027] Specific Implementation Example 1: Please refer to... Figures 1-6 An energy-saving and consumption-reducing device for the reuse of manganese carbonate washing water and condensate includes a raw material preparation unit 1, a manganese carbonate synthesis tank 2, a first filter press 3, a manganese carbonate slurry tank 4, a second filter press 5, a washing water tank 6, and an evaporation and condensate tank 7. The raw material preparation unit 1 is connected to the manganese carbonate synthesis tank 2 via pipelines. The manganese carbonate synthesis tank 2 is used to synthesize manganese carbonate through a carbonate solution and manganese liquid. The first filter press 3 is used to receive the output product of the manganese carbonate synthesis tank 2 and separate it into filter residue and filtrate. The manganese carbonate slurry tank 4 is connected to the first filter press 3 via pipelines and is used to receive the filter residue separated by the first filter press 3. The second filter press 5 is used to receive the output product of the manganese carbonate slurry tank 4 and separate it into filter residue and filtrate.

[0028] like Figure 2 The raw material preparation unit 1 shown includes a carbonate dissolving tank 11 and a manganese liquid storage tank 12. The carbonate dissolving tank 11 includes a pure water inlet 111 and a carbonate inlet 112 for dissolving carbonates. The manganese liquid storage tank 12 is used to store manganese liquid. The bottom of the carbonate dissolving tank 11 is provided with a carbonate outlet 113, and the bottom of the manganese liquid storage tank 12 is provided with a manganese liquid outlet 121. The two are connected to the manganese carbonate synthesis tank 2 through pipes to ensure that the carbonate solution and manganese liquid are mixed evenly to synthesize high-purity manganese carbonate.

[0029] The washing tank 6 is connected to the second filter press 5 by a pipe. It is used to receive the filtrate separated by the second filter press 5 and transport the treated filtrate to the carbonate dissolving tank 11 for redissolving, so as to realize resource recycling and improve production efficiency.

[0030] The evaporation condensate tank 7 is used to receive the steam that is fed into the manganese carbonate synthesis tank 2 to heat the carbonate solution and manganese liquid reaction. After cooling, the steam is liquefied and transported through pipelines to the first filter press 3, the manganese carbonate slurry tank 4 and the second filter press 5 respectively, so as to realize the heat recycling and reduce energy consumption.

[0031] Specifically, such as Figure 3 The manganese carbonate synthesis tank 2 shown is equipped with a carbonate inlet 21, a manganese liquid inlet 22, a steam inlet 23, and a steam outlet 24 at the top. The carbonate inlet 21 and the manganese liquid inlet 22 are respectively connected to the carbonate dissolving tank 11 and the manganese liquid storage tank 12 through pipes. The manganese carbonate synthesis tank 2 is equipped with a first drain outlet 25 at the bottom, which is connected to the first filter press 3 through a pipe. The manganese carbonate synthesis tank 2 is equipped with a steam pipe 26 inside. One end of the steam pipe 26 enters the manganese carbonate synthesis tank 2 from the steam inlet 23 and is transported to the evaporation condensate tank 7 from the steam outlet 24. The steam is also liquefied by the cooling inside the manganese carbonate synthesis tank 2, thereby achieving the purpose of collecting condensate.

[0032] Specifically, the manganese carbonate synthesis tank 2 also includes a stirring motor 27 and a first stirring device 28. The stirring motor 27 is detachably installed on the top of the manganese carbonate synthesis tank 2, and the output end of the stirring motor 27 is detachably connected to the first stirring device 28 for mixing carbonate solution and manganese liquid to ensure uniform and efficient reaction.

[0033] Specifically, the first stirring device 28 includes a stirring rod 281, a turbine stirrer 282, and a propeller stirrer 283. The turbine stirrer 282 and the propeller stirrer 283 are detachably mounted on the stirring rod 281. The propeller stirrer 283 is located below the turbine stirrer 282, and its blades are axially bent to generate an axial upward thrust on the water flow, ensuring the circulation of the carbonate solution and manganese solution. The turbine stirrer 282 is located above the propeller stirrer 283, and its blades act in a horizontal circumferential direction to generate circumferential rotation of the water flow, enhancing the mixing effect of the carbonate solution and manganese solution. As the stirring motor 27 rotates, the propeller stirrer 283 pushes the water flow from below to above. The water flow pushed to the top is then circumferentially pushed outward by the turbine stirrer 282, thus making full contact with the steam pipe 26. Since the steam pipe 26 located above has a higher temperature, the solution can be heated better, thereby increasing the reaction rate.

[0034] Specifically, the steam pipe 26 is a spirally distributed pipe along the inner wall of the manganese carbonate synthesis tank 2. The two sides of the pipe are the inlet end 261 and the outlet end 262, respectively. The outer wall of the inlet end 261 fits with the inner wall of the steam inlet 23, and the outer wall of the outlet end 262 fits with the inner wall of the steam outlet 24.

[0035] Specifically, such as Figure 4The manganese carbonate slurry tank 4 shown is equipped with a filter residue inlet 41, a condensate inlet 42, and a clean water outlet 43 at the top. The filter residue inlet 41 is used to receive the filter residue separated by the first filter press 3, the condensate inlet 42 is used to receive the condensate collected by the evaporation condensate tank 7, and the clean water outlet 43 is used to replenish the clean water required for the slurry process. The manganese carbonate slurry tank 4 is equipped with a second stirring device 44 inside, which is used to uniformly stir the filter residue, condensate, and clean water to improve the slurry efficiency. The manganese carbonate slurry tank 4 is equipped with a second drain outlet 45 at the bottom. The second drain outlet 45 is connected to the second filter press 5 by a pipeline, and a control valve group 46 is provided between the second drain outlet 45 and the second filter press 5 to control the discharge rate of the liquid in the manganese carbonate slurry tank 4.

[0036] Specifically, such as Figure 5 The washing tank 6 shown is equipped with a filtrate inlet 61 at the top, which is used to receive the filtrate separated by the second filter press 5; the washing tank 6 is equipped with a third stirring device 62 inside, which is used to keep the residual solid manganese carbonate microparticles in a suspended state through mechanical disturbance, so as to avoid sedimentation and agglomeration at the bottom of the tank; the washing tank 6 is equipped with a third drain outlet 63 at the bottom, which is connected to the washing outlet 114 at the top of the carbonate dissolving tank 11 through a pipe, for conveying the stirred medium for reuse. The filtrate after washing is transported to the carbonate dissolving tank 11, realizing the recycling of water and reducing resource waste.

[0037] Specifically, such as Figure 6 The steam outlet 262 of the steam pipe 26 is connected to the condensate steam inlet 71 at the top of the evaporation condensate tank 7. The steam inside the steam pipe 26 is liquefied by cooling in the manganese carbonate synthesis tank 2 and collected inside the evaporation condensate tank 7. The evaporation condensate tank 7 is equipped with a fourth stirring device 72 to uniformly stir the condensate and prevent the condensate temperature from being too high. The lower part of the evaporation condensate tank 7 is equipped with a fourth drain outlet 73, which is connected to the manganese carbonate slurry tank 4, the first filter press 3 and the second filter press 5 through pipes. This effectively recovers the steam condensate and uses it to filter and wash the solid manganese carbonate. Since the washing water temperature is higher than that of room temperature water, the washing effect can be increased, and the amount of steam used to raise the temperature in the manganese carbonate synthesis process can be reduced. At the same time, the preparation of carbonates is accelerated and the reaction time is shortened, thus achieving the effect of increasing production and efficiency.

[0038] During operation, an appropriate amount of carbonate and water are first added to the carbonate dissolving tank 11 to dissolve the carbonate solution, which is then mixed with the manganese liquid in the manganese liquid storage tank 12 in a certain proportion and transported to the manganese carbonate synthesis tank 2 for reaction. The turbine agitator 282 and the propeller agitator 283 are controlled by the stirring motor 27 to ensure the circulation of the carbonate solution and manganese liquid and the heating efficiency. After the reaction is completed, the output product is separated by the first filter press 3, and the filter residue enters the manganese carbonate slurry tank 4, with the filtrate being a manganese carbonate solution. The filter residue in the manganese carbonate slurry tank 4 is then uniformly stirred with condensate and pure water by the second stirring device 5 and then... The filtrate is discharged through the second drain port 45 and enters the second filter press 5 for secondary separation. The separated filtrate is transported to the washing tank 6, while the filter residue is solid manganese carbonate. The filtrate in the washing tank 6 is stirred evenly by the third stirring device 62 and then transported to the carbonate dissolving tank 11 through the third drain port 63 to achieve water resource recycling. The condensate in the evaporation condensate tank 7 is stirred evenly by the fourth stirring device 72 and then transported to the manganese carbonate slurry tank 4, the first filter press 3, and the second filter press 5 through the fourth drain port 73 to ensure full utilization of the condensate, reduce costs, reduce energy consumption, and optimize resource allocation.

[0039] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A device for reusing manganese carbonate washing water and condensate to save energy and reduce consumption, characterized in that: The system includes a raw material preparation unit (1), a manganese carbonate synthesis tank (2), a first filter press (3), a manganese carbonate slurry tank (4), a second filter press (5), a washing tank (6), and an evaporation and condensation tank (7). The raw material preparation unit (1) is connected to the manganese carbonate synthesis tank (2) via a pipeline. The manganese carbonate synthesis tank (2) is used to synthesize manganese carbonate through a carbonate solution and manganese liquid. The first filter press (3) is used to receive the output product of the manganese carbonate synthesis tank (2) and separate it into filter residue and filtrate. The manganese carbonate slurry tank is used to receive the filter residue. The second filter press (5) is used to receive the output product of the manganese carbonate slurry tank (4) and separate it into filter residue and filtrate. The raw material preparation unit (1) includes a carbonate dissolving tank (11) and a manganese liquid storage tank (12). The carbonate dissolving tank (11) includes a pure water inlet (111) and a carbonate inlet (112) for dissolving carbonate. The manganese liquid storage tank (12) is used to store manganese liquid. The carbonate dissolving tank (11) has a carbonate outlet (113) at the bottom, and the manganese liquid storage tank (12) has a manganese liquid outlet (121) at the bottom. The two are connected to the manganese carbonate synthesis tank (2) through pipes. The washing tank (6) is connected to the second filter press (5) and is used to receive the filtrate separated by the second filter press (5); The evaporation condensate tank (7) is used to receive the steam introduced into the manganese carbonate synthesis tank (2) and to transport the cooled steam through pipelines to the first filter press (3), the manganese carbonate slurry tank (4), and the second filter press (5).

2. The energy-saving and consumption-reducing device for reusing manganese carbonate washing water and condensate water according to claim 1, characterized in that, The top of the manganese carbonate synthesis tank (2) is provided with a carbonate inlet (21), a manganese liquid inlet (22), a steam inlet (23) and a steam outlet (24). The carbonate inlet (21) and the manganese liquid inlet (22) are respectively connected to the carbonate dissolving tank (11) and the manganese liquid storage tank (12) through pipes. The bottom of the manganese carbonate synthesis tank (2) is provided with a first drain outlet (25), which is connected to the first filter press (3) through a pipe. The inside of the manganese carbonate synthesis tank (2) is provided with a steam pipe (26). One end of the steam pipe (26) enters the inside of the manganese carbonate synthesis tank (2) from the steam inlet (23) and is transported to the evaporation condensate tank (7) from the steam outlet (24).

3. The energy-saving and consumption-reducing device for reusing manganese carbonate washing water and condensate water according to claim 1, characterized in that, The manganese carbonate synthesis tank (2) also includes a stirring motor (27) and a first stirring device (28). The stirring motor (27) is detachably installed on the top of the manganese carbonate synthesis tank (2), and the output end of the stirring motor (27) is detachably connected to the first stirring device (28) for mixing carbonate solution and manganese liquid.

4. The energy-saving and consumption-reducing device for reusing manganese carbonate washing water and condensate water according to claim 3, characterized in that, The first stirring device (28) includes a stirring rod (281), a turbine stirrer (282), and a propeller stirrer (283); the turbine stirrer (282) and the propeller stirrer (283) are respectively detachably mounted on the stirring rod (281); the propeller stirrer (283) is located at the lower part of the turbine stirrer (282), and its blades are axially bent to generate an axial upward thrust on the water flow, ensuring the circulation of the carbonate solution and the manganese liquid; the turbine stirrer (282) is located at the upper part of the propeller stirrer (283), and its blades act in the horizontal circumferential direction to generate a circumferential rotation on the water flow, thereby enhancing the mixing effect of the carbonate solution and the manganese liquid.

5. The energy-saving and consumption-reducing device for reusing manganese carbonate washing water and condensate water according to claim 2, characterized in that, The steam pipe (26) is a spirally distributed pipe along the inner wall of the manganese carbonate synthesis tank (2). The two sides of the pipe are the inlet end (261) and the outlet end (262), respectively. The outer wall of the inlet end (261) fits with the inner wall of the steam inlet (23), and the outer wall of the outlet end (262) fits with the inner wall of the steam outlet (24).

6. The energy-saving and consumption-reducing device for reusing manganese carbonate washing water and condensate according to claim 1, characterized in that, The top of the manganese carbonate slurry tank (4) is provided with a filter residue inlet (41), a condensate inlet (42), and a clean water outlet (43); the filter residue inlet (41) is used to receive the filter residue separated by the first filter press (3), the condensate inlet (42) is used to receive the condensate collected by the evaporation condensate tank (7), and the clean water outlet (43) is used to replenish the clean water required for the slurry process; the manganese carbonate slurry tank (4) is provided with a second stirring device (44) inside, which is used to uniformly stir the filter residue, condensate, and clean water to improve the slurry efficiency; the bottom of the manganese carbonate slurry tank (4) is provided with a second drain outlet (45); the second drain outlet (45) is connected to the second filter press (5) by a pipeline, and a control valve group (46) is provided between the second drain outlet (45) and the second filter press (5) to control the discharge rate of the liquid in the manganese carbonate slurry tank (4).

7. The energy-saving and consumption-reducing device for reusing manganese carbonate washing water and condensate according to claim 1, characterized in that, The washing tank (6) is provided with a filtrate inlet (61) at the top for receiving the filtrate separated by the second filter press (5); the washing tank (6) is provided with a third stirring device (62) inside for keeping the residual solid manganese carbonate microparticles in a suspended state by mechanical disturbance; the washing tank (6) is provided with a third drain outlet (63) at the bottom, which is connected to the carbonate dissolving tank (11) through a pipe for transporting the stirred medium for reuse.

8. The energy-saving and consumption-reducing device for reusing manganese carbonate washing water and condensate water according to claim 5, characterized in that: The steam outlet (262) of the steam pipe (26) is connected to the condensing steam inlet (71) set at the top of the evaporation condensate tank (7). The steam inside the steam pipe (26) is cooled and liquefied by the manganese carbonate synthesis tank (2) and collected inside the evaporation condensate tank (7). The evaporation condensate tank (7) is equipped with a fourth stirring device (72) for uniformly stirring the condensate. The evaporation condensate tank (7) is equipped with a fourth drain outlet (73) at the bottom. The fourth drain outlet (73) is connected to the manganese carbonate slurry tank (4), the first filter press (3) and the second filter press (5) through pipes.

9. The energy-saving and consumption-reducing device for reusing manganese carbonate washing water and condensate water according to claim 6, characterized in that: The control valve group (46) includes a pair of flow valves arranged in parallel. The parallel flow valves can be used simultaneously or individually to regulate the discharge rate of liquid in the slurry tank.

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