Online hybrid ternary precursor synthesis control system

Abstract

The utility model discloses an online mixed ternary precursor synthesis control system, and belongs to the technical field of ternary precursor synthesis. According to the utility model, the problems that the conventional ternary liquid preparation process is not intelligent enough and consumes long time are solved. The on-line mixing synthesis control system comprises five groups of medium pipelines and a static mixer, each group of medium pipelines comprises a raw material pipe, a cleaning water pipe, a first conveying pipe, a second conveying pipe, a return pipe and a three-way ball valve, and the three groups of medium pipelines are correspondingly connected with a nickel sulfate solution storage tank, a cobalt sulfate solution storage tank and a manganese sulfate solution storage tank. The three second conveying pipes are connected to an inlet of the static mixer, the other two second conveying pipes are connected to the reaction kettle, and an outlet of the static mixer is connected to the reaction kettle through a third conveying pipe. Five solutions can be conveyed to a synthesis control system at the same time, a ternary liquid preparation tank and a ternary liquid conveying skid body in the prior art are replaced, and the mixing cost is greatly saved.

Description

Technical Field

[0001] This utility model relates to an online hybrid ternary precursor synthesis control system, belonging to the field of ternary precursor synthesis technology. Background Technology

[0002] In existing technology, the process for preparing the nickel-cobalt-manganese ternary precursor is as follows: First, solutions of nickel sulfate, cobalt sulfate, and manganese sulfate are separately conveyed to the ternary solution preparation tank by a conveyor skid according to the required mass. After conveying, the ternary salt solution in the preparation tank is stirred for a certain period of time and then stopped. The operator takes samples for testing to check whether the composition and concentration of the ternary solution meet the requirements. Once the requirements are met, the preparation is complete. Then, it is simultaneously conveyed to the synthesis control system by a conveyor skid along with an alkaline solution and an ammonia solution. The system starts feeding according to the set flow rate. The specific process flow diagram is shown below. Figure 2 As shown.

[0003] However, in existing technologies, the preparation of ternary solutions needs to be completed in a preparation tank, and manual sampling and testing are required to determine whether the composition and concentration of the solution meet the requirements. The preparation process is not intelligent enough and is time-consuming. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems and thereby provide an online hybrid ternary precursor synthesis control system.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] An online mixing ternary precursor synthesis control system includes a nickel sulfate solution storage tank, a cobalt sulfate solution storage tank, a manganese sulfate solution storage tank, an alkaline solution storage tank, an ammonia solution storage tank, an online mixing synthesis control system, and a reactor. The online mixing synthesis control system includes five sets of media pipelines and a static mixer. Each set of media pipelines includes a raw material pipeline, a cleaning water pipeline, a first delivery pipeline, a second delivery pipeline, a return pipeline, and a three-way ball valve. The raw material pipeline and the cleaning water pipeline are connected in parallel to one end of the first delivery pipeline, and the raw material pipeline is equipped with a media inlet valve. The cleaning water pipeline is equipped with a cleaning water inlet valve. The other end of the first delivery pipeline, one end of the return pipeline, and the second... One end of each delivery pipe is connected via a three-way ball valve. Each of the five raw material pipes is connected to the bottom of one of the five solution storage tanks. Each cleaning water pipe is connected to a corresponding cleaning water tank. Each first delivery pipe is equipped with a delivery pump and a mass flow meter along its delivery direction. The other end of each of the five return pipes is connected to the top gas phase space of the five solution storage tanks. In the three sets of media pipelines connected to the nickel sulfate solution storage tank, cobalt sulfate solution storage tank, and manganese sulfate solution storage tank, three second delivery pipes are connected to the inlet of the static mixer, and the other two second delivery pipes are connected to the reactor. The outlet of the static mixer is connected to the reactor via a third delivery pipe.

[0007] Furthermore, a pump inlet valve is also provided on the first delivery pipe, and the pump inlet valve is located upstream of the delivery pump.

[0008] Furthermore, a drain branch is connected to the first delivery pipe between the pump inlet valve and the delivery pump, and a drain valve is installed on the drain branch.

[0009] Furthermore, a safety pressure relief branch is externally connected to the first delivery pipe between the delivery pump and the mass flow meter, and a safety valve is installed on the safety pressure relief branch.

[0010] Furthermore, the outlet end of the safety valve is connected to the return pipe.

[0011] Furthermore, a filter is provided at the input end of the first delivery pipe.

[0012] Furthermore, a back pressure valve is installed on the first delivery pipe between the mass flow meter and the three-way ball valve.

[0013] Furthermore, a first check valve is installed on the second delivery pipe.

[0014] Furthermore, a second check valve is installed on the third delivery pipe.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The online mixing ternary precursor synthesis control system of this invention enables the simultaneous delivery of five solutions to the synthesis control system. Nickel sulfate, cobalt sulfate, and manganese sulfate solutions are thoroughly mixed online via a static mixer, and then fed into the reactor along with an alkaline solution and an ammonia solution. During the feeding process, the system can fine-tune the set flow rate based on changes in flow rate and pH value to ensure a stable synthesis reaction.

[0017] Online mixing of ternary solutions is achieved through a static mixer; the intelligent and efficient preparation process of ternary solutions is achieved through an online mixing and synthesis control system.

[0018] This invention replaces the ternary liquid preparation tank and ternary liquid conveying skid in the prior art with an online mixing and synthesis control system, which greatly saves mixing costs. Attached Figure Description

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

[0020] Figure 2 This is a flowchart of the preparation process of ternary precursors in the prior art.

[0021] In the picture:

[0022] 1. Nickel sulfate solution storage tank; 2. Cobalt sulfate solution storage tank; 3. Manganese sulfate solution storage tank; 4. Alkali solution storage tank; 5. Ammonia solution storage tank; 6. Online mixing and synthesis control system; 6-1. Static mixer; 6-2. Medium inlet valve; 6-3. Cleaning water inlet valve; 6-5. Second delivery pipe; 6-6. Return pipe; 6-7. Three-way ball valve; 6-8. Delivery pump; 6-9. Mass flow meter; 6-10. Third delivery pipe; 6-11. Pump inlet valve; 6-12. Drain valve; 6-13. Safety valve; 6-14. Filter; 6-15. Back pressure valve; 6-16. First check valve; 6-17. Second check valve; 7. Reactor; 8. Cleaning water tank. Detailed Implementation

[0023] Specific implementation method one: Combining Figure 1 This embodiment describes an online mixing ternary precursor synthesis control system, comprising a nickel sulfate solution storage tank 1, a cobalt sulfate solution storage tank 2, a manganese sulfate solution storage tank 3, an alkaline solution storage tank 4, an ammonia solution storage tank 5, an online mixing synthesis control system 6, and a reaction vessel 7. The online mixing synthesis control system 6 includes five sets of media pipelines and a static mixer 6-1. Each set of media pipelines includes a raw material pipeline, a cleaning water pipeline, a first delivery pipeline, a second delivery pipeline 6-5, a return pipeline 6-6, and a three-way ball valve 6-7. The raw material pipeline and the cleaning water pipeline are connected in parallel to one end of the first delivery pipeline, and the raw material pipeline is equipped with a media inlet valve 6-2. The cleaning water pipeline is equipped with a cleaning water inlet valve 6-3. The other end of the first delivery pipeline, one end of the return pipeline 6-6, and the second... One end of each of the conveying pipes 6-5 is connected by a three-way ball valve 6-7. Each of the five raw material pipes is connected to the bottom of one of the five solution storage tanks. Each cleaning water pipe is connected to a cleaning water tank 8. Each first conveying pipe is equipped with a conveying pump 6-8 and a mass flow meter 6-9 in sequence along its conveying direction. The other end of each of the five return pipes 6-6 is connected to the top gas phase space of the five solution storage tanks. In the three sets of media pipelines connected to the nickel sulfate solution storage tank 1, the cobalt sulfate solution storage tank 2, and the manganese sulfate solution storage tank 3, three of the second conveying pipes 6-5 are connected to the inlet of the static mixer 6-1, and the other two second conveying pipes 6-5 are connected to the reactor 7. The outlet of the static mixer 6-1 is connected to the reactor 7 through a third conveying pipe 6-10.

[0024] Nickel sulfate solution storage tank 1, cobalt sulfate solution storage tank 2, and manganese sulfate solution storage tank 3 are all raw material tanks.

[0025] This invention includes five media pipelines, used for conveying and regulating the flow of nickel sulfate solution, cobalt sulfate solution, manganese sulfate solution, alkaline solution, and ammonia solution, respectively. The five media pipelines have identical structural configurations.

[0026] The inlet A of the three-way ball valve 6-7 is connected to the output end of the first conveying pipe, one outlet B of the three-way ball valve 6-7 is connected to the return pipe 6-6, and the other outlet C of the three-way ball valve 6-7 is connected to the second conveying pipe 6-5, which is used to convey materials downstream.

[0027] The three-way ball valve 6-7 is used to switch between the reflux mode and the liquid supply mode. When the three-way ball valve 6-7 is not switched (or when the system is stopped), the inlet A and the outlet B of the three-way ball valve 6-7 form a passage, which is the reflux mode. After the three-way ball valve 6-7 is switched, the inlet A and the other outlet C of the three-way ball valve 6-7 form a passage, which is the liquid supply mode.

[0028] If the three-way ball valve 6-7 is not switched properly, or is not switched at all, the position detection system will not be able to detect the valve position and the system will alarm; this is to prevent the material measured by the mass flow meter 6-9 from not entering the downstream device and affecting the system's measurement accuracy.

[0029] By using a static mixer 6-1, the three solutions—nickel sulfate, cobalt sulfate, and manganese sulfate—are thoroughly mixed. The length and diameter of the static mixer 6-1 can be adjusted according to parameters such as the flow rate and density of the mixing medium. To further enhance the mixing of the three solutions, the length of the static mixer 6-1 can be appropriately increased. The specific structure of the static mixer 6-1 is existing technology and will not be described in detail here.

[0030] Static Mixer 6-1 Working Principle:

[0031] The static mixer 6-1 is a highly engineered static mixing device that enables continuous online mixing of fluids within a pipeline. The static mixer 6-1 has no moving parts; its basic principle is to utilize a mixing unit fixed within the pipe to cut, shear, rotate, and remix two or more fluid streams, achieving good dispersion and thorough mixing. The fluid movement follows a "splitting-displacement-overlapping" pattern.

[0032] The online mixing ternary precursor synthesis control system of this invention enables the simultaneous delivery of five solutions to the synthesis control system. Nickel sulfate, cobalt sulfate, and manganese sulfate solutions are thoroughly mixed online via a static mixer 6-1, and then fed into the reaction vessel 7 along with an alkaline solution and an ammonia solution. During the feeding process, the system can fine-tune the set flow rate based on changes in flow rate and pH value to ensure a stable synthesis reaction.

[0033] The ternary liquid is mixed online through a static mixer 6-1; the ternary liquid preparation process is made intelligent and efficient through an online mixing and synthesis control system 6.

[0034] In this invention, the online mixing and synthesis control system 6 replaces the ternary liquid preparation tank and ternary liquid conveying skid in the prior art, greatly saving mixing costs.

[0035] Furthermore, a pump inlet valve 6-11 is also provided on the first delivery pipe, and the pump inlet valve 6-11 is located upstream of the delivery pump 6-8. This design facilitates the control of the flow of solution into the delivery pump 6-8.

[0036] Furthermore, a drain branch is connected externally to the first delivery pipe between the pump inlet valve 6-11 and the delivery pump 6-8, and a drain valve 6-12 is installed on the drain branch. This design allows for the discharge of excess medium from the pipeline during equipment maintenance by opening the drain valve 6-12. During normal operation, the drain valve 6-12 is closed.

[0037] Furthermore, a safety pressure relief branch is externally connected to the first delivery pipe between the delivery pump 6-8 and the mass flow meter 6-9, and a safety valve 6-13 is installed on the safety pressure relief branch. With this design, in the event of pipe blockage, the safety valve 6-13 opens to relieve pressure on the pipe and prevent overpressure.

[0038] Furthermore, the outlet end of safety valve 6-13 is connected to return pipe 6-6. This design facilitates pressure relief and simplifies the piping structure.

[0039] Furthermore, a filter 6-14 is provided at the input end of the first delivery pipe.

[0040] Furthermore, a back pressure valve 6-15 is installed on the first delivery pipe between the mass flow meter 6-9 and the three-way ball valve 6-7.

[0041] Furthermore, a first check valve 6-16 is installed on the second delivery pipe 6-5. This design facilitates the control of the on / off state of the pipeline.

[0042] Furthermore, a second check valve 6-17 is installed on the third delivery pipe 6-10. This design facilitates the control of the on / off state of the pipeline.

[0043] Working principle:

[0044] The working medium from each raw material tank sequentially enters the inlet of the transfer pump 6-8 through the medium inlet valve 6-2, filter 6-14, and pump inlet valve 6-11. After being pressurized by the transfer pump 6-8, it enters the mass flow meter 6-9 and then passes through the back pressure valve 6-15 into the three-way ball valve 6-7. At the start of the entire online hybrid ternary precursor synthesis control system, the three-way ball valve 6-7 is in its initial position. The working medium enters from inlet A of the three-way ball valve 6-7 and flows back to the raw material tank from outlet B of the three-way ball valve 6-7.

[0045] When the mass flow meter 6-9 detects that the medium meets the requirements for feeding material to the downstream reactor 7, the control system switches the three three-way ball valves 6-7 to the working state. The three working media are fed to the three inlets of the downstream static mixer 6-1 through the other outlet C of the three-way ball valve 6-7. After the three working media are fully mixed by the static mixer 6-1, they are fed into the reactor 7. At the same time, the alkaline solution and ammonia solution are fed directly into the reactor 7 through the corresponding medium pipelines.

[0046] When starting the synthesis control system, first, set the feed flow rate, the proportions of various media, flow rate requirements, pH value requirements, and the concentration and density of each media as required. After inputting the information, open the media inlet valves 6-2 for each media. The system will then begin feeding according to the set flow rate. During the feeding process, the system will fine-tune the set flow rate based on changes in flow rate, pH value, and the operating parameters of the downstream reactor 7 to ensure a stable synthesis reaction and achieve precise batching.

Claims

1. An online mixed-mode ternary precursor synthesis control system, characterized by: The application relates to a nickel sulfate solution storage tank (1), a cobalt sulfate solution storage tank (2), a manganese sulfate solution storage tank (3), an alkali solution storage tank (4), an ammonia solution storage tank (5), an online mixing and synthesis control system (6) and a reaction kettle (7), wherein the online mixing and synthesis control system (6) comprises five groups of medium pipelines and static mixers (6-1), each group of medium pipelines comprises a raw material pipe, a cleaning water pipe, a first conveying pipe, a second conveying pipe (6-5), a backflow pipe (6-6) and a three-way ball valve (6-7), the raw material pipe and the cleaning water pipe are connected in parallel at one end of the first conveying pipe, a medium inlet valve (6-2) is arranged on the raw material pipe, a cleaning water inlet valve (6-3) is arranged on the cleaning water pipe, the other end of the first conveying pipe, one end of the backflow pipe (6-6) and one end of the second conveying pipe (6-5) are connected through the three-way ball valve (6-7), five raw material pipes are connected with the bottoms of the five solution storage tanks respectively, each cleaning water pipe is connected with a cleaning water tank (8), a conveying pump (6-8) and a mass flowmeter (6-9) are arranged on each first conveying pipe in sequence along the conveying direction of the first conveying pipe, the other ends of the five backflow pipes (6-6) are connected with the top gas phase spaces of the five solution storage tanks respectively, three second conveying pipes (6-5) connected with the static mixers (6-1) are arranged in the three groups of medium pipelines connected with the nickel sulfate solution storage tank (1), the cobalt sulfate solution storage tank (2) and the manganese sulfate solution storage tank (3), the other two second conveying pipes (6-5) are connected with the reaction kettle (7), and the outlet of the static mixer (6-1) is connected with the reaction kettle (7) through a third conveying pipe (6-10).

2. An inline hybrid ternary precursor synthesis control system according to claim 1, wherein: A pump inlet valve (6-11) is further arranged on the first conveying pipe, and the pump inlet valve (6-11) is arranged upstream of the conveying pump (6-8).

3. An inline hybrid ternary precursor synthesis control system according to claim 2, wherein: A drain branch is connected to the first conveying pipe between the pump inlet valve (6-11) and the conveying pump (6-8), and a drain valve (6-12) is arranged on the drain branch.

4. The online mixed-mode ternary precursor synthesis control system of claim 1, wherein: A safety relief branch is connected to the first conveying pipe between the conveying pump (6-8) and the mass flowmeter (6-9), and a safety valve (6-13) is arranged on the safety relief branch.

5. An inline hybrid ternary precursor synthesis control system according to claim 4, wherein: The outlet end of the safety valve (6-13) is communicated with the backflow pipe (6-6).

6. An online mixed-mode ternary precursor synthesis control system according to claim 1, wherein: A filter (6-14) is arranged at the input end of the first conveying pipe.

7. The online mixed-mode ternary precursor synthesis control system of claim 1, wherein: A back pressure valve (6-15) is arranged on the first conveying pipe between the mass flowmeter (6-9) and the three-way ball valve (6-7).

8. The online mixed-mode ternary precursor synthesis control system of claim 1, wherein: A first one-way valve (6-16) is arranged on the second conveying pipe (6-5).

9. The online mixed-mode ternary precursor synthesis control system of claim 1, wherein: A second one-way valve (6-17) is arranged on the third conveying pipe (6-10).

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