Improved manganese sulfate solution centrifugal filtration and dry tail gas energy-saving utilization device

Abstract

The utility model relates to an improved manganese sulfate solution centrifugal filtration and dry tail gas energy-saving utilization device, and belongs to the technical field. The device mainly comprises a centrifugal machine, a disc dryer, a bag collector, a communicating pipe, a circulating pipe, a first electromagnetic valve, a first check valve, a second electromagnetic valve, a return pipe, a second check valve, a temperature transmitter and a controller. A manganese sulfate saturated hot solution is filtered by a centrifugal machine and then falls into a disc dryer to be dried, tail gas of the disc dryer enters a bag collector through a communicating pipe to complete dust removal, the tail gas subjected to dust removal flows back to a discharging hopper through a circulating pipe to complete cyclic utilization of the dried tail gas, and a temperature transmitter monitors the temperature of the discharging hopper in real time. The opening degree of the first electromagnetic valve and the opening degree of the second electromagnetic valve are dynamically adjusted in cooperation with the controller, dry tail gas discharged by the bag collector is introduced into the discharging hopper through the circulating pipe, a continuous hot air curtain is formed, the temperature of the inner wall of the discharging hopper is always kept above the dew point temperature of a manganese sulfate solution, and the water vapor condensation phenomenon is eliminated.

Description

Technical Field

[0001] This utility model belongs to the technical field, specifically relating to an improved energy-saving device for centrifugal filtration and drying of manganese sulfate solution. Background Technology

[0002] In the field of manganese sulfate production, the current single-effect TVR evaporation crystallization process is widely used to process pure manganese sulfate solutions after extraction and impurity removal. The core purpose of the evaporation and concentration process is to make the manganese sulfate solution supersaturated by evaporation and dehydration. The saturated solution then produces monohydrate manganese sulfate crystals in the crystallization system.

[0003] However, a thorny problem arises during the centrifugal filtration process of saturated hot manganese sulfate solution: the hot water mist generated during centrifugal filtration condenses into water on the inner wall of the centrifuge hopper. This water flows downwards into the mixing bin of the disc dryer, causing material agglomeration. Simultaneously, the hot air from the disc dryer is directly released into the air, resulting in low thermal energy utilization. Therefore, there is an urgent need for an improved manganese sulfate solution centrifugal filtration and drying exhaust gas energy utilization device to solve these problems, ensuring efficient and smooth operation of the manganese sulfate production process and stable product quality. Utility Model Content

[0004] To overcome the problems of hot water mist generated during centrifugal filtration of saturated hot manganese sulfate solution condensing into water on the inner wall of the centrifuge hopper, causing material agglomeration after flowing downwards into the mixing bin of a disc dryer, and low thermal energy utilization due to the direct emission of hot air from the disc dryer into the air, this invention provides an improved energy-saving device for centrifugal filtration and drying exhaust gas utilization of manganese sulfate solution. A temperature transmitter monitors the hopper temperature in real time, and a controller dynamically adjusts the opening of the first and second solenoid valves. The drying exhaust gas discharged from the bag filter is introduced into the hopper through a circulation pipe, forming a continuous hot air curtain. This achieves the recycling of the drying exhaust gas, ensuring that the temperature of the inner wall of the hopper remains above the dew point temperature of the manganese sulfate solution, thus eliminating water vapor condensation.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: An improved energy-saving device for centrifugal filtration and drying exhaust gas utilization of manganese sulfate solution mainly includes a centrifuge, a disc dryer, a bag filter, a connecting pipe, a circulation pipe, a first solenoid valve, a first check valve, a second solenoid valve, a return pipe, a second check valve, a temperature transmitter, and a controller. The centrifuge is mounted on top of the disc dryer via a bracket, and a hopper is provided at the bottom of the centrifuge. The centrifuge is connected to the disc dryer through the hopper. One end of the connecting pipe is connected to the air outlet of the disc dryer, and the other end is connected to the air inlet of the bag filter. The bag filter is connected to the disc dryer through the connecting pipe. The baghouse dust collector is equipped with an exhaust fan. One end of the circulation pipe is connected to the exhaust fan, and the other end is connected to the discharge hopper. The exhaust fan of the baghouse dust collector is connected to the discharge hopper of the centrifuge through the circulation pipe. The first solenoid valve and the first check valve are installed on the circulation pipe near the exhaust fan. The second solenoid valve is installed on the circulation pipe near the discharge hopper. One end of the return pipe is installed on the discharge hopper, and the other end is connected to the connecting pipe. The second check valve is installed on the return pipe. The temperature transmitter is installed inside the discharge hopper. The controller is installed on the centrifuge. The centrifuge, disc dryer, baghouse dust collector, first solenoid valve, first check valve, second solenoid valve, second check valve, temperature transmitter and controller are electrically connected.

[0006] A drain ball valve is installed on the circulation pipe.

[0007] The feeding hopper is configured with a conical structure.

[0008] The beneficial effects of this utility model are:

[0009] After being filtered through a centrifuge, the saturated hot manganese sulfate solution falls into a disc dryer for drying. The exhaust gas from the disc dryer enters a bag filter dust collector through a connecting pipe for dust removal. After dust removal, the exhaust gas flows back to the discharge hopper through a circulation pipe, realizing the recycling of the drying exhaust gas. A temperature transmitter monitors the temperature of the discharge hopper in real time and dynamically adjusts the opening of the first and second solenoid valves in conjunction with the controller. The drying exhaust gas discharged from the bag filter dust collector is introduced into the discharge hopper through the circulation pipe, forming a continuous hot air curtain. This keeps the temperature of the inner wall of the discharge hopper above the dew point temperature of the manganese sulfate solution, eliminating water vapor condensation. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the working state of this utility model. Detailed Implementation

[0011] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0012] This utility model discloses an improved energy-saving device for centrifugal filtration and drying exhaust gas utilization of manganese sulfate solution. The improved energy-saving device mainly includes a centrifuge 1, a disc dryer 2, a bag filter 3, a connecting pipe 4, a circulation pipe 5, a first solenoid valve 6, a first check valve 7, a second solenoid valve 8, a return pipe 9, a second check valve 10, a temperature transmitter 11, and a controller 12. The centrifuge 1 is mounted on top of the disc dryer 2 via a bracket. A hopper 13 is provided at the bottom of the centrifuge 1, which connects the centrifuge 1 to the disc dryer 2. One end of the connecting pipe 4 is connected to the outlet of the disc dryer 2, and the other end is connected to the inlet of the bag filter 3. The bag filter 3 is connected to the disc dryer 2 via the connecting pipe 4. The dust collector 3 is equipped with an exhaust fan 31. One end of the circulation pipe 5 is connected to the exhaust fan 31, and the other end is connected to the discharge hopper 13. The exhaust fan 31 of the bag dust collector 3 is connected to the discharge hopper 13 of the centrifuge 1 through the circulation pipe 5. The first solenoid valve 6 and the first check valve 7 are installed on the circulation pipe 5, close to the exhaust fan 31. The second solenoid valve 8 is installed on the circulation pipe 5, close to the discharge hopper 13. One end of the return pipe 9 is installed on the discharge hopper 13, and the other end is connected to the connecting pipe 4. The second check valve 10 is installed on the return pipe 9. The temperature transmitter 11 is installed inside the discharge hopper 13. The controller 12 is installed on the centrifuge 1. The centrifuge 1, the disc dryer 2, the bag dust collector 3, the first solenoid valve 6, the first check valve 7, the second solenoid valve 8, the second check valve 10, the temperature transmitter 11, and the controller 12 are electrically connected.

[0013] like Figure 1 As shown, a drain ball valve 14 is installed on the circulation pipe 5; the drain ball valve 14 on the circulation pipe 5 can be opened periodically to drain liquid that may accumulate in the circulation pipe 5.

[0014] like Figure 1 As shown, the feeding hopper 13 is configured with a conical structure; the conical structure of the feeding hopper 13 helps the material fall smoothly and prevents blockage.

[0015] Work process:

[0016] Before centrifuge 1 starts operating, controller 12 automatically opens the first solenoid valve 6 and the second solenoid valve 8, while simultaneously closing the second check valve 10. Disc dryer 2 starts its preheating program, and the initial hot exhaust gas it generates enters the bag filter 3 through the connecting pipe 4. At this time, exhaust fan 31 transports part of the exhaust gas to the discharge hopper 13 through the circulation pipe 5, forming a preheated airflow circulation. The preset temperature of temperature transmitter 11 is set to 90℃. As production progresses, when the temperature measured by temperature transmitter 11 is below 90℃, controller 12 controls the opening of the first solenoid valve 6 and the second solenoid valve 8, introducing hot exhaust gas into the inner wall of the discharge hopper 13 of centrifuge 1. This causes the droplets condensed by the hot water mist generated by the solution on the inner wall of the discharge hopper 13 of centrifuge 1 to vaporize into gas. This gas passes through the return pipe 9 and the second check valve 10. The dust enters the connecting pipe 4 at the front end of the bag dust collector 3 and is collected together. When the temperature transmitter 11 measures a temperature greater than 90℃, the controller 12 closes the first solenoid valve 6 and the second solenoid valve 8, preventing hot air from entering the inner wall of the hopper 13 of the centrifuge 1. After running for a certain period of time, the drain ball valve 14 at the lowest point of the circulation pipe 5 is opened periodically to discharge condensate droplets and prevent excessive accumulation. The first check valve 7 and the second check valve 10 prevent gas from flowing back in the circulation pipe 5 and the diversion pipe 9 and mixing into other equipment. Through the above working process, the device can effectively solve the problem of hot water mist condensing into water flow and causing material agglomeration during the centrifugal filtration of manganese sulfate solution. At the same time, it realizes the energy-saving utilization of drying tail gas, ensuring the efficient and smooth operation of the manganese sulfate production process and the stability of product quality.

[0017] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. An improved energy-saving device for centrifugal filtration and drying of manganese sulfate solution, characterized in that: The improved centrifugal filtration and drying tail gas energy utilization device of manganese sulfate solution comprises a centrifuge (1), a disc dryer (2), a bag dust collector (3), a communication pipe (4), a circulating pipe (5), a first electromagnetic valve (6), a first check valve (7), a second electromagnetic valve (8), a backflow pipe (9), a second check valve (10), a temperature transmitter (11), a controller (12), the centrifuge (1) is installed at the top end of the disc dryer (2) through a support, a lower hopper (13) is arranged at the bottom end of the centrifuge (1), the centrifuge (1) is communicated with the disc dryer (2) through the lower hopper (13), one end of the communication pipe (4) is connected with the air outlet of the disc dryer (2), the other end is connected with the air inlet of the bag dust collector (3), the bag dust collector (3) is communicated with the disc dryer (2) through the communication pipe (4), an exhaust fan (31) is arranged on the bag dust collector (3), one end of the circulating pipe (5) is connected with the exhaust fan (31), the other end is connected with the lower hopper (13), the exhaust fan (31) of the bag dust collector (3) is communicated with the lower hopper (13) of the centrifuge (1) through the circulating pipe (5), the first electromagnetic valve (6) and the first check valve (7) are installed on the circulating pipe (5) and close to the exhaust fan (31), the second electromagnetic valve (8) is installed on the circulating pipe (5) and close to the lower hopper (13), one end of the backflow pipe (9) is installed on the lower hopper (13), the other end is communicated with the communication pipe (4), the second check valve (10) is installed on the backflow pipe (9), the temperature transmitter (11) is installed in the lower hopper (13), the controller (12) is installed on the centrifuge (1), the centrifuge (1), the disc dryer (2), the bag dust collector (3), the first electromagnetic valve (6), the first check valve (7), the second electromagnetic valve (8), the second check valve (10), the temperature transmitter (11) and the controller (12) are electrically connected.

2. The improved device for centrifugal filtration and drying of tail gas energy utilization of manganese sulfate solution according to claim 1, characterized in that: The circulating pipe (5) is provided with a drain ball valve (14).

3. The improved device for centrifugal filtration and drying of tail gas energy utilization of manganese sulfate solution according to claim 1 or 2, characterized in that: The lower hopper (13) is provided in a conical structure.

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