Lignin-based flocculant impurity removal device for electrolyte

Abstract

The utility model discloses a lignin-based flocculant impurity removal device for electrolyte, which comprises a precipitation tank, a plurality of slag discharge ports are arranged at the bottom of the precipitation tank, and the inner wall of the bottom of the precipitation tank is inclined towards the slag discharge ports; a heater of the intelligent heating and stirring system is arranged on the outer side wall of the precipitation tank, a temperature sensor is arranged in the precipitation tank, and the monitored temperature can be fed back to an intelligent temperature stirring controller in real time; a variable frequency motor of the stirring mechanism is used for driving a spiral stirring paddle to rotate, and the spiral stirring paddle extends into the precipitation tank; the heater, the temperature sensor and the variable frequency motor are electrically connected with the intelligent temperature stirring controller, and the intelligent temperature stirring controller can adjust the rotating speed of the variable frequency motor and adjust the working condition of the heater; the automatic flocculating agent adding system comprises a flocculating agent variable-frequency adding device and a first valve, the flocculating agent variable-frequency adding device is communicated with the interior of the precipitation tank through a conveying pipeline, and lignin-based flocculating agents are added into the precipitation tank by opening the first valve. The purity and the impurity removal efficiency of the electrolyte are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrolytic manganese dioxide impurity removal technical field, especially a kind of lignin-based flocculants impurity removal device for electrolyte. BACKGROUND

[0002] In prior art, in the process of preparing electrolytic manganese dioxide, the intermediate product manganese sulfate solution usually needs to be purified by removing impurities, and barium sulfide precipitation is a common impurity removal method. The specific operation of this method is to input manganese sulfate leaching solution into a container, add barium sulfide, start the stirring rod for stirring, make the solution precipitate pass through the lifting outer shaft, make the inner shaft close to the container bottom end expose, filter out the precipitate, and obtain the purified liquid.

[0003] Chinese patent CN107513626A discloses an impurity removal device for electrolytic manganese dioxide. A hollow inner shaft is rotatably installed through the bottom of the container. The inner shaft is sleeved with an outer shaft which can rotate with it. The outer shaft is provided with a stirring rod which can stir the solution in the container. By lifting the outer shaft upward, the inner shaft close to the container bottom end can expose. The solution in the container is filtered through the exposed part of the inner shaft. The filtrate flows into a purification tank arranged below the container. A funnel is arranged at the top end of the inner shaft and communicates with the inner cavity of the inner shaft. The funnel can deliver the impurity removal agent which reacts with the filtrate to the purification tank through the inner cavity of the inner shaft. The impurity removal device uses the inner and outer shafts to drive the stirring rod to rotate to filter the solution. The reaction generated precipitate remains in the container. The precipitate is not easy to discharge. The electrolyte impurity removal is not sufficient, the efficiency is low, and the cost is high.

[0004] The disclosure of the above background art is only used to assist in understanding the concept and technical solution of the utility model, and it does not necessarily belong to the prior art of the present patent application. In the absence of explicit evidence that the above content has been disclosed on the filing date of the present patent application, the above background art should not be used to evaluate the novelty and inventiveness of the present application. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a lignin-based flocculants impurity removal device for electrolyte to solve the technical problems of the above-mentioned prior art, such as inconvenient discharge of precipitate, insufficient impurity removal, low efficiency and high cost.

[0006] Therefore, the utility model provides a lignin-based flocculants impurity removal device for electrolyte.

[0007] Preferably, the utility model can also have the following technical features:

[0008] A lignin-based flocculants impurity removal device for electrolyte comprises:

[0009] A sedimentation tank, wherein the bottom of the sedimentation tank is provided with a plurality of slag discharge ports, the bottom of the tank includes an outer wall and an inner wall, and the inner wall of the bottom is inclined toward the slag discharge ports;

[0010] An intelligent heating and stirring system includes a heater, a temperature sensor, a stirring mechanism, and an intelligent temperature stirring controller. The heater is disposed on the outer wall of the sedimentation tank. The temperature sensor is disposed inside the sedimentation tank to monitor the temperature of the liquid inside the tank and feeds back the monitored temperature to the intelligent temperature stirring controller in real time. The stirring mechanism includes a helical stirring paddle and a variable frequency motor. The variable frequency motor drives the helical stirring paddle to rotate, and the helical stirring paddle extends into the sedimentation tank. The heater, temperature sensor, and variable frequency motor are all electrically connected to the intelligent temperature stirring controller. Based on the temperature feedback from the temperature sensor, the intelligent temperature stirring controller can adjust the speed of the variable frequency motor and adjust the operation of the heater.

[0011] An automatic flocculant addition system includes a flocculant frequency converter and a first valve. The flocculant frequency converter is connected to the interior of the sedimentation tank through a delivery pipeline. The first valve is located on the delivery pipeline. By opening the first valve, lignin-based flocculant is added to the sedimentation tank.

[0012] Preferably, the inclination angle of the inner wall of the tank bottom is 30° to 45°.

[0013] Preferably, the temperature sensor can be installed on the inner wall of the sedimentation tank or on the stirring mechanism.

[0014] Preferably, the flocculant frequency converter includes a flocculant storage tank and a screw metering feeder. The flocculant storage tank is used to store lignin-based flocculants, and the screw metering feeder is frequency-controlled to automatically and quantitatively add lignin-based flocculants into the sedimentation tank.

[0015] Preferably, the flocculant storage tank is equipped with a vibrator on its outer wall.

[0016] Preferably, several of the slag discharge ports are arranged side by side or in a matrix.

[0017] Preferably, a second valve is provided at several of the slag discharge ports, and an intelligent control system is provided outside the sedimentation tank. The second valve is electrically connected to the intelligent control system, and the second valve can be controlled independently.

[0018] Preferably, the second valve is an electric valve.

[0019] Preferably, an electromagnetic induction device is provided at each of the slag discharge ports. The electromagnetic induction device is connected to the intelligent control system. When the amount of flocculation and sedimentation reaches a certain threshold, the electromagnetic induction device can transmit a signal to the intelligent control system, and the intelligent control system controls the corresponding electromagnetic induction device to work.

[0020] Preferably, the spiral impeller includes an impeller shaft and several impeller blades, and multiple sets of impeller blades are stacked at intervals along the axial direction of the impeller shaft.

[0021] The beneficial effects of this utility model compared with the prior art include:

[0022] 1. This utility model adds flocculant to the sedimentation tank, which causes impurities in the electrolyte to precipitate. Since the bottom of the sedimentation tank is inclined towards the slag discharge port, the flocculated sediment quickly gathers near the slag discharge port, making it easy for the sediment to be automatically discharged from the slag discharge port. By using flocculant sedimentation, the purity of the electrolyte is greatly improved, the impurity removal efficiency is increased, and the cost is reduced.

[0023] 2. This utility model, by setting up an intelligent heating and stirring system, can heat and stir the electrolyte, and use temperature sensor feedback to adjust the stirring rate, thereby controlling the reaction rate and ensuring that the electrolyte is at a suitable flocculation reaction efficiency.

[0024] 3. This utility model, by setting up an automatic flocculant addition system, can measure and control the amount of flocculant added, further accurately add flocculant, and improve the electrolyte impurity removal efficiency.

[0025] 4. This utility model utilizes a spiral stirring paddle to form a circulating slurry flow phase, ensuring uniform mixing and improving material contact efficiency. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0027] Explanation of reference numerals in the attached drawings: 1-Sedimentation tank; 2-Inlet; 3-Spiral agitator; 31-Agitator shaft; 4-Agitator blades; 5-Automatic flocculant addition system; 6-Flocculant frequency converter; 61-Flocculant storage tank; 62-Spiral metering feeder; 63-Vibrator; 7-First valve; 8-Frequency converter motor; 9-Temperature sensor; 10-Intelligent temperature and stirring controller; 11-Slag discharge port; 12-Top cover; 13-Second valve; 14-Anti-corrosion coating; 15-Heater; 16-Tank body; 17-Tank bottom; 171-Inner wall of tank bottom; 172-Outer wall of tank bottom; 18-Support column. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0029] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0030] A lignin-based flocculant impurity removal device for electrolytes, such as Figure 1 As shown, it includes a sedimentation tank 1, an intelligent heating and stirring system, and an automatic flocculant addition system 5.

[0031] The sedimentation tank 1 includes a top cover 12, a tank body 16, and a tank bottom 17. The top cover 12 is located on the upper part of the tank body 16, and a feed inlet 2 is provided on the top cover 12. Electrolyte and other materials are added into the sedimentation tank 1 through the feed inlet 2. The tank bottom 17 is provided with a plurality of slag discharge ports 11. The tank bottom 17 includes an outer wall 172 and an inner wall 171. A plurality of support columns 18 are provided below the outer wall 172 to support the sedimentation tank 1. The inner wall 171 is inclined toward the slag discharge ports 11. Preferably, the inclination angle of the inner wall 171 is 30° to 45° so that the flocculated sediment can quickly gather near the slag discharge ports 11 for subsequent discharge. Specifically, the inner wall of the tank body 16 and the inner wall of the bottom of the tank facing the top cover 12 are provided with an anti-corrosion coating 14. The anti-corrosion coating 14 forms a shielding coating on the surface, preventing water and oxygen from contacting the metal surface of the sedimentation tank 1, and playing a good anti-corrosion role for the sedimentation tank 1.

[0032] The intelligent heating and stirring system includes a heater 15, a temperature sensor 9, a stirring mechanism, and an intelligent temperature stirring controller 10. The heater 15 is located on the outer wall of the tank 16 and is used to heat the tank 16 to adjust the temperature of the electrolyte in the sedimentation tank 1. The temperature sensor 9 is located inside the tank 16 and is used to monitor the temperature of the liquid inside the sedimentation tank 1, feeding back the monitored temperature to the intelligent temperature stirring controller 10 in real time to adjust the operation of the heater 15. Specifically, the intelligent temperature stirring controller 10 compares the received temperature with a set value. When it detects that the real-time temperature of the electrolyte in the sedimentation tank 1 is lower than the set value, it sends a command to the heater 15 to start the heater 15 until the electrolyte temperature reaches the set value. Specifically, the temperature sensor 9 can be located on the inner wall of the sedimentation tank 16 or on the stirring mechanism, such as... Figure 1As shown, in this embodiment, the temperature sensor 9 is mounted on the stirring mechanism. The stirring mechanism includes a spiral stirring paddle 3 and a variable frequency motor 8. The variable frequency motor 8 is mounted on the upper cover 12 and is used to drive the spiral stirring paddle 3 to rotate. The spiral stirring paddle 3 extends into the sedimentation tank 1 to stir the liquid in the sedimentation tank 1. The liquid here includes materials such as electrolyte and flocculant. The heater 15, temperature sensor 9, and variable frequency motor 8 are all electrically connected to the intelligent temperature stirring controller 10. Based on the temperature feedback from the temperature sensor 9, the intelligent temperature stirring controller 10 can adjust the speed of the variable frequency motor 8 and adjust the working status of the heater 15 to ensure that the electrolyte is in a suitable environment for flocculation reaction, thereby accelerating the sedimentation rate and improving the impurity removal efficiency. The intelligent temperature stirring controller 10 is a commercially available controller, such as the WIGGENS TCSS programmable intelligent temperature stirring controller.

[0033] The automatic flocculant addition system 5 includes a flocculant frequency converter 6 and a first valve 7. The flocculant frequency converter 6 is connected to the interior of the sedimentation tank 1 via a conveying pipe. The first valve 7 is located on the conveying pipe. By opening the first valve 7, lignin-based flocculant is added to the sedimentation tank 1, allowing the lignin-based flocculant to mix with the electrolyte to form flocculation and sedimentation, thus achieving the effect of impurity removal. The flocculant frequency converter 6 includes a flocculant storage tank 61 and a screw metering feeder 62. The flocculant storage tank 61 is used to store lignin-based flocculant, and the screw metering feeder 62 is frequency-controlled to automatically and quantitatively add lignin-based flocculant to the sedimentation tank 1. Specifically, the rotation speed of the screw metering feeder 62 is adjusted using frequency conversion technology by pre-set parameters (e.g., the amount of flocculant to be added per unit time based on factors such as the flow rate and turbidity of the liquid in the sedimentation tank 1). When the equipment is working, the screw metering feeder 62 rotates at a set frequency. Due to its screw structure, it can push out a certain amount of lignin-based flocculant from the flocculant storage tank 61 during rotation, thus achieving quantitative feeding. The lignin-based flocculant pushed out by the screw metering feeder 62 is transported into the sedimentation tank 1 through the conveying pipeline. The first valve 7 on the conveying pipeline can control the on / off of the flocculant delivery. When the system is running normally, the first valve 7 is in the open state, so that the quantitative flocculant can smoothly enter the sedimentation tank 1 from the flocculant storage tank 61 through the conveying pipeline, thereby completing the process of automatic quantitative feeding of lignin-based flocculant.

[0034] In some embodiments of this example, a vibrator 63 is provided on the outer wall of the flocculant storage tank 61. The vibrator 63 vibrates intermittently to prevent material blockage at the lower end of the flocculant storage tank 61, which would prevent the timely addition of lignin-based flocculant.

[0035] In other examples of this embodiment, several slag discharge ports 11 can be arranged side-by-side or in a matrix according to the shape and size of the sedimentation tank 1 to improve slag discharge efficiency. Specifically, a second valve 13 is provided at several slag discharge ports 11, and an intelligent control system (not shown in the figure) is set outside the sedimentation tank 1. The second valve 13 is electrically connected to the intelligent control system, enabling the second valve 13 to be controlled independently. In actual production, the corresponding second valve 11 can be activated according to the flocculation and sedimentation situation near the slag discharge port 11 to automatically discharge the flocculated sediment. Specifically, the second valve 13 can be an electric valve. The intelligent control system is programmed with different control commands. After sedimentation is completed, the system sends an open or close command to the electric valve corresponding to the specific slag discharge port 11 according to the distribution of sediment near the slag discharge port 11, thereby realizing independent control of each slag discharge port 11. For example, if there is a lot of sediment in a certain area, the slag discharge port 11 corresponding to that area can be opened separately for slag discharge. Electromagnetic induction devices can also be installed at each slag discharge port 11. The electromagnetic induction devices are connected to the intelligent control system. When the amount of flocculation and sedimentation reaches a certain threshold, the electromagnetic induction devices will transmit signals to the intelligent control system. The intelligent control system will then control the corresponding electromagnetic induction devices to open or close the slag discharge ports, thereby achieving independent control.

[0036] In other examples of this embodiment, the spiral agitator 3 includes an agitator shaft 31 and several agitator blades 4. Preferably, 3 to 5 agitator blades 4 are arranged as a group, with the blades 4 spaced apart around the agitator shaft 31, and the blades 4 in the same group inclined in the same direction to form a spiral shape. In some examples, multiple groups of agitator blades 4 can be stacked at intervals along the axial direction of the agitator shaft 31, so that the liquid in the sedimentation tank 1 forms a circulating flow phase, allowing the dry lignin-based flocculant to fully contact and mix with the electrolyte, reducing the mixing dead zone during the agitation process, avoiding the formation of insoluble particles, ensuring uniform distribution of materials in the sedimentation tank, and improving material contact efficiency.

[0037] The working process of the above-mentioned impurity removal device is as follows: Before starting the device, first confirm that the slag discharge port 11 is closed. Set the heating temperature through the intelligent temperature stirring controller 10, and then add electrolyte to the sedimentation tank 1 through the feed port 2. When the electrolyte in the sedimentation tank 1 reaches a certain amount, such as 1 / 2 to 2 / 3 of the capacity of the sedimentation tank 1, start the variable frequency motor 8 to stir. Heater 15 heats the electrolyte according to the set temperature. During operation, temperature sensor 9 monitors the temperature of the electrolyte in real time and feeds it back to the intelligent temperature stirring controller 10. When the temperature reaches the set temperature... When the temperature is too high or too low, the intelligent temperature stirring controller 10 adjusts the speed of the variable frequency motor 8 and the working status of the heater 15 according to the electrolyte temperature to ensure that the electrolyte is at a suitable flocculation reaction efficiency. At the same time, the flocculant automatic addition system 5 automatically and accurately adds flocculant by opening the first valve 7 and using the flocculant variable frequency additive 6. After stirring for a certain period of time, stirring is stopped. The inclination angle of the sedimentation tank 1 is used to make the flocculated sediment quickly gather near the slag discharge port 11. The second valve 13 is opened by controlling it to facilitate the automatic discharge of the flocculated sediment from the slag discharge port.

[0038] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0039] Although exemplary embodiments of the present invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the present invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the present invention.

Claims

1. A lignin-based flocculant impurity removal device for electrolytes, characterized in that, include: A sedimentation tank, wherein the bottom of the sedimentation tank is provided with a plurality of slag discharge ports, the bottom of the tank includes an outer wall and an inner wall, and the inner wall of the bottom is inclined toward the slag discharge ports; An intelligent heating and stirring system includes a heater, a temperature sensor, a stirring mechanism, and an intelligent temperature stirring controller. The heater is disposed on the outer wall of the sedimentation tank. The temperature sensor is disposed inside the sedimentation tank to monitor the temperature of the liquid inside the tank and feeds back the monitored temperature to the intelligent temperature stirring controller in real time. The stirring mechanism includes a helical stirring paddle and a variable frequency motor. The variable frequency motor drives the helical stirring paddle to rotate, and the helical stirring paddle extends into the sedimentation tank. The heater, temperature sensor, and variable frequency motor are all electrically connected to the intelligent temperature stirring controller. Based on the temperature feedback from the temperature sensor, the intelligent temperature stirring controller can adjust the speed of the variable frequency motor and adjust the operation of the heater. An automatic flocculant addition system includes a flocculant frequency converter and a first valve. The flocculant frequency converter is connected to the interior of the sedimentation tank through a delivery pipeline. The first valve is located on the delivery pipeline. By opening the first valve, lignin-based flocculant is added to the sedimentation tank.

2. The lignin-based flocculant impurity removal device for electrolyte according to claim 1, characterized in that: The inclination angle of the inner wall of the trough bottom is 30° to 45°.

3. The lignin-based flocculant impurity removal device for electrolyte according to claim 1, characterized in that: The temperature sensor can be installed on the inner wall of the sedimentation tank or on the stirring mechanism.

4. The lignin-based flocculant impurity removal device for electrolyte according to claim 1, characterized in that: The flocculant frequency converter includes a flocculant storage tank and a screw metering feeder. The flocculant storage tank is used to store lignin-based flocculants, and the screw metering feeder is frequency-controlled to automatically and quantitatively add lignin-based flocculants into the sedimentation tank.

5. The lignin-based flocculant impurity removal device for electrolyte according to claim 4, characterized in that: The flocculant storage tank is equipped with a vibrator on its outer wall.

6. The lignin-based flocculant impurity removal device for electrolyte according to claim 1, characterized in that: Several of the aforementioned slag discharge ports are arranged side by side or in a matrix.

7. The lignin-based flocculant impurity removal device for electrolyte according to claim 1, characterized in that: A second valve is provided at several of the slag discharge ports, and an intelligent control system is provided outside the sedimentation tank. The second valve is electrically connected to the intelligent control system, and the second valve can be controlled independently.

8. The lignin-based flocculant impurity removal device for electrolyte according to claim 7, characterized in that: The second valve is an electric valve.

9. The lignin-based flocculant impurity removal device for electrolyte according to claim 7, characterized in that: An electromagnetic induction device is installed at each of the slag discharge ports. The electromagnetic induction device is connected to the intelligent control system. When the amount of flocculation and sedimentation reaches a certain threshold, the electromagnetic induction device can transmit a signal to the intelligent control system, and the intelligent control system controls the corresponding electromagnetic induction device to work.

10. The lignin-based flocculant impurity removal device for electrolyte according to claim 1, characterized in that: The spiral impeller includes an impeller shaft and several impeller blades, with multiple sets of impeller blades stacked at intervals along the axial direction of the impeller shaft.

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