Novel ternary precursor reaction synthesis automatic control system
By designing an automated ternary precursor reaction synthesis control system, the shortcomings of manual sampling and testing in precursor production were solved, achieving automated sampling and testing, improving the accuracy of test results and reducing labor costs.
Patent Information
- Application Number
- CN202423294174.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The reaction synthesis process in precursor production requires a large amount of manual sampling and testing, resulting in high labor costs and inaccurate test results.
A novel automatic control system for the reactive synthesis of ternary precursors is designed. By utilizing the pipeline connection between the diaphragm pump, the three-way valve and the detection equipment, automatic sampling and detection are achieved. The flushing pipeline is cleaned by controlling the solenoid valve to ensure the accuracy of the detection results.
It reduces manual operation, improves the accuracy and reliability of test results, and realizes automated control of the precursor reaction synthesis process.
Smart Images
Figure CN223486372U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ternary precursor production technology, and more specifically to a novel automatic control system for ternary precursor reaction synthesis. Background Technology
[0002] With breakthroughs in energy storage technology in the lithium battery industry and the rapid rise of new energy vehicle companies both domestically and internationally, there is a significant demand gap for ternary cathode materials. Precursor materials, as key raw materials for ternary materials, directly impact product quality, and the most critical part of precursor production is the reaction synthesis process. This demand for precursor production capacity has driven the development of a series of precursor synthesis equipment manufacturers and testing equipment suppliers, such as the Malvern 3000 particle size analyzer, high-precision real-time pH meter, and ammonia value testing instruments.
[0003] In mainstream precursor synthesis processes, all testing steps involve manual sampling, manual titration, or manual sample processing before adding to the instrument for analysis. The reaction process is also the most frequent sampling stage in the entire production process, thus incurring significant labor costs. Automation projects are particularly important in production, not only saving manpower but also reducing human error and other adverse effects.
[0004] This invention addresses the inconvenience of manual sampling and delivery, as well as the uncertainty of pH adjustment encountered in actual precursor synthesis production. Starting from the working principles of automatic sampling and detection equipment, it introduces the logic of synthesis control and links the feedback results of detection equipment through a program, thus designing a novel automatic control system for ternary precursor reaction synthesis. Utility Model Content
[0005] To address the shortcomings and defects of existing technologies, a novel automatic control system for the reaction synthesis of ternary precursors is provided, which reduces the intensity of manual labor and provides accurate and reliable detection results.
[0006] A novel automated control system for the reaction synthesis of ternary precursors includes:
[0007] A reaction vessel, used to contain the precursor solution, is connected to a diaphragm pump via a feed line.
[0008] The output end of the diaphragm pump is connected to a three-way valve via a pipeline.
[0009] The first output port of the three-way valve is connected to a laser particle size analyzer via a pipeline, and the second output port is connected to an ammonia concentration analyzer via a pipeline.
[0010] A first flushing line is connected between the three-way valve and the ammonia concentration tester.
[0011] The first flushing pipeline is connected to a flushing water supply end, which is used to deliver flushing water through the first flushing pipeline to the pipeline and to flush the pipeline and instruments on the output side of the diaphragm pump.
[0012] With the above structure, the novel ternary precursor reaction synthesis automatic control system of this utility model has the following advantages compared with the prior art:
[0013] The diaphragm pump starts, drawing the precursor solution (material) from the reactor and conveying it through the feed line to the three-way valve. From there, it is conveyed through the first output port of the three-way valve to the sample placement area of the laser particle size analyzer, and through the second output port to the sample placement area of the ammonia concentration analyzer. After the conveying process is complete, the instrument analyzes the sample to determine if the material ratio in the reactor meets the requirements.
[0014] A first flushing line is connected between the three-way valve and the ammonia concentration tester.
[0015] The first flushing pipeline is connected to a flushing water supply end, which is used to deliver flushing water (pure water) through the first flushing pipeline to the pipeline and flush the pipeline and instruments on the output side of the diaphragm pump; it can clean residual materials, avoid affecting subsequent testing operations, and make the test results accurate and reliable.
[0016] Compared to the traditional method of manually extracting samples from the reactor and then conducting subsequent tests, this device has the advantages of less manual work and more accurate and reliable test results.
[0017] As an improvement of this utility model, the first flushing pipeline is provided with a first solenoid valve, which controls the flow rate of the first flushing pipeline.
[0018] As an improvement of this utility model, the pipeline between the diaphragm pump and the input end of the three-way valve is connected to a drainage pipeline, and the drainage pipeline is equipped with a second solenoid valve for controlling the flow rate.
[0019] As an improvement of this utility model, a second flushing pipeline is connected between the detection feed pipeline and the diaphragm pump. The second flushing pipeline is connected to the flushing water supply end, which is used to transport flushing water through the second flushing pipeline to the detection feed pipeline and the input end of the diaphragm pump for flushing.
[0020] As an improvement of this utility model, the laser particle size analyzer and ammonia concentration tester are electrically connected to a control terminal, which is used to feed back the collected data to the control terminal.
[0021] The reactor is equipped with an alkaline solution inlet pipe and an ammonia solution inlet pipe, and each of the alkaline solution inlet pipe and the ammonia solution inlet pipe is equipped with a metering pump.
[0022] The control terminal is electrically connected to the metering pump, and the flow rate of each feed pipe is controlled by the metering pump. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of this utility model.
[0024] The diagram shows: 1. Reactor; 2. Feeding line; 3. Diaphragm pump; 4. Three-way valve; 5. First flushing line; 5.1. First solenoid valve; 6. Flushing water supply end; 7. Drainage line; 7.1. Second solenoid valve; 8. Second flushing line; 8.1. Third solenoid valve; 9. Laser particle size analyzer; 10. Ammonia concentration tester; 11. Control terminal; 12. Alkali solution feed pipe; 13. Ammonia solution feed pipe; 14. Metering pump. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0026] Please see Figure 1 As shown, a novel automatic control system for the reaction synthesis of ternary precursors includes:
[0027] The reactor 1 is used to contain the precursor solution, and the reactor 1 is connected to a diaphragm pump 3 via a feed line 2.
[0028] The output end of the diaphragm pump 3 is connected to a three-way valve 4 via a pipeline.
[0029] The first output port of the three-way valve 4 is connected to a laser particle size analyzer 9 via a pipeline, and the second output port is connected to an ammonia concentration tester 10 via a pipeline.
[0030] A first flushing line 5 is connected between the three-way valve 4 and the ammonia concentration tester 10.
[0031] The first flushing pipeline 5 is connected to a flushing water supply end 6, which is used to deliver flushing water through the first flushing pipeline 5 to the pipeline and to flush the pipeline and instruments on the output side of the diaphragm pump 3.
[0032] With the above structure, the novel ternary precursor reaction synthesis automatic control system of this utility model has the following advantages compared with the prior art:
[0033] Diaphragm pump 3 is activated, drawing the precursor solution (material) from reactor 1. This solution is then conveyed through feed line 2 to three-way valve 4, and from there through the first output port of valve 4 to the sample placement area of laser particle size analyzer 9. Finally, it is conveyed through the second output port of valve 4 to the sample placement area of ammonia concentration analyzer 10. After the conveying process is complete, the instrument analyzes the sample to determine if the material ratio in reactor 1 meets the requirements.
[0034] A first flushing line 5 is connected between the three-way valve 4 and the ammonia concentration tester 10.
[0035] The first flushing pipeline 5 is connected to the flushing water supply end 6, which is used to deliver flushing water (pure water) through the first flushing pipeline 5 to the pipeline and flush the pipeline and instruments on the output side of the diaphragm pump 3; it can clean residual materials, avoid affecting subsequent testing operations, and make the test results accurate and reliable.
[0036] Compared to the traditional method of manually extracting samples from reactor 1 and then conducting subsequent tests, this device has the advantages of less manual work and more accurate and reliable test results.
[0037] As an improvement of this utility model, the first flushing pipeline 5 is provided with a first solenoid valve 5.1, which controls the flow rate of the first flushing pipeline 5.
[0038] During the testing operation, the first solenoid valve 5.1 closes the flushing line to prevent materials from entering and mixing with the flushing water;
[0039] During the rinsing operation, the diaphragm pump 3 stops conveying materials, and the first solenoid valve 5.1 opens the rinsing pipeline. At this time, the rinsing water supply end 6 can convey rinsing water to the corresponding pipeline through the rinsing pipeline.
[0040] The above improvements make the device operate reliably.
[0041] As an improvement of this utility model, the pipeline between the diaphragm pump 3 and the input end of the three-way valve 4 is connected to a drainage pipeline 7, and the drainage pipeline 7 is equipped with a second solenoid valve 7.1 for controlling the flow rate.
[0042] During the testing operation, the second solenoid valve 7.1 closes the drain pipe 7, preventing materials from being discharged through the drain pipe 7 and reducing losses.
[0043] During the rinsing operation, the second solenoid valve 7.1 opens the drain pipe 7. At this time, the rinsing water that enters between the output end of the diaphragm pump 3 and the three-way valve 4 can be discharged through the drain pipe 7 to prevent accumulation and make the pipe cleaner.
[0044] The flushing water used to flush the pipeline between the output port of the three-way valve 4 and the instrument detection end, as well as the corresponding pipelines, is discharged through the instrument's drain port.
[0045] As an improvement of this utility model, a second flushing pipeline 8 is connected between the detection feed pipeline 2 and the diaphragm pump 3. The second flushing pipeline 8 is connected to the flushing water supply end 6. The flushing water supply end 6 is used to transport flushing water through the second flushing pipeline 8 to the detection feed pipeline 2 and the input end of the diaphragm pump 3 for flushing.
[0046] After the above improvements, the pipelines on the feed line 2 and the input side of the diaphragm pump 3 were also flushed to further improve the cleanliness of the pipelines and instruments and avoid residual materials from affecting the accuracy of subsequent test results.
[0047] As an improvement of this utility model, the laser particle size analyzer 9 and the ammonia concentration tester 10 are electrically connected to a control terminal 11, which is used to feed back the collected data to the control terminal 11.
[0048] The reactor 1 is equipped with an alkaline solution inlet pipe 12 and an ammonia solution inlet pipe 13, and metering pumps 14 are respectively installed in the alkaline solution inlet pipe 12 and the ammonia solution inlet pipe 13.
[0049] The control terminal 11 is electrically connected to the metering pump 14, and the flow rate of each feed pipe is controlled by the metering pump 14.
[0050] The laser particle size analyzer 9 can be the Synpatec QUIXEL on-line wet laser particle size analyzer 9.
[0051] All solenoid valves, three-way valves 4, diaphragm pumps 3 and metering pumps 14 in this device are electrically connected to the control terminal 11 for data communication or to execute control signals issued by the control terminal 11.
[0052] This scheme uses a pneumatic diaphragm pump 3 to collect samples and deliver them to the testing instruments, and a three-way valve 4 controls the quantitative delivery to the two sets of testing equipment. After the reaction slurry is delivered, an automatic cleaning system consisting of a flushing water supply end 6, solenoid valves, etc., will flush the pipeline under the control of the control end 11. The pipeline is flushed by opening and closing the discharge valve and setting the cleaning parameters. This system can achieve a multi-sample mode and can adjust the cleaning parameters according to the material characteristics.
[0053] The sample undergoes automatic testing in the detection instrument, outputting particle size and ammonia value test results to the DCS control system (control terminal 11) for comparison with given standard values. If the ammonia value is too high or too low, the ammonia flow rate can be automatically adjusted to maintain a stable ammonia value in the reaction system. The current reaction control system already achieves automatic online pH control, but manual identification of particle size and input of the desired pH value are required. In this solution, the online laser particle size analyzer 9 outputs the particle size detection results, compares them with given standard values, and outputs the set pH value to the DCS system, thus cyclically maintaining particle size stability in the reaction system.
[0054] This device can be equipped with multiple reactors 1, and each reactor 1 is connected to a detection feed line 2. Each detection feed line 2 is connected to the input end of a three-way valve 4, and each detection feed line 2 is equipped with a diaphragm pump 3.
[0055] Each detection feed line 2 is connected to the flushing water supply end 6, and a third solenoid valve 8.1 is installed between each detection feed line 2 and the flushing water supply end 6.
[0056] During the testing operation, the control terminal 11 controls the corresponding diaphragm pump 3 to start, so as to transport the material in the reaction vessel 1 to be tested to the instrument, and the instrument can test the material.
[0057] During the flushing operation, the control terminal 11 controls the opening of the first solenoid valve 5.1, the second solenoid valve 7.1 and the corresponding third solenoid valve 8.1, which can flush the pipelines and instruments after the above-mentioned testing is completed.
[0058] This device also has the following advantages:
[0059] 1. It realizes the sampling and testing mode of one instrument connected to multiple reactors 1, eliminating the need for manual sampling and testing, thus reducing a large amount of manual operation in the ternary precursor reaction synthesis process.
[0060] 2. This solution adopts an automated approach. After each sampling and conveying, the system switches to pure water for cleaning via a solenoid valve, ensuring that the entire conveying device is clean and free of any residual material from the previous sampling, thus preventing any impact on the accuracy of the test.
[0061] 3. Fully automated, the detection results are output to the system to realize automatic adjustment of flow rate and online pH value, so as to achieve automatic control of the reaction system.
[0062] The working principle of this device is as follows:
[0063] Diaphragm pump 3 is activated, and material is drawn from reactor 1 and transported through pipelines to the sample placement areas of the two testing instruments. The transfer of material between the two instruments is facilitated by three-way valve 4. After transport is complete, the instruments perform automatic testing. The transport system then opens the valves of the pure water unit and the drain pipeline to flush and clean the transport pipeline. This cycle is repeated to achieve material transport.
[0064] In the automated testing process, the sample is placed into the testing instrument, which automatically and accurately tests the sample's particle size and ammonia value, transmitting the results to the DCS control system in real time. The system quickly compares and analyzes the received ammonia value and particle size data with preset standard values. If any deviation from the standard range is detected, whether too high or too low, the system automatically activates an adjustment mechanism to control the feed rate via metering pump 14, precisely regulate the ammonia flow rate, or set a suitable pH value. This ensures that the ammonia value and particle size in the reaction system remain stable, guaranteeing the stability and reliability of the entire reaction process.
[0065] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.
Claims
1. A novel automatic control system for the reactive synthesis of ternary precursors, characterized in that, include: A reaction vessel (1) is used to contain the precursor solution, and the reaction vessel (1) is connected to a diaphragm pump (3) via a feed line (2). The output end of the diaphragm pump (3) is connected to a three-way valve (4) via a pipeline. The first output port of the three-way valve (4) is connected to a laser particle size analyzer (9) via a pipeline, and the second output port is connected to an ammonia concentration tester (10) via a pipeline. A first flushing line (5) is connected between the three-way valve (4) and the ammonia concentration tester (10); The first flushing pipeline (5) is connected to a flushing water supply end (6), which is used to deliver flushing water through the first flushing pipeline (5) to the pipeline and to flush the pipeline and instruments on the output side of the diaphragm pump (3).
2. The novel ternary precursor reaction synthesis automatic control system according to claim 1, characterized in that: The first flushing line (5) is equipped with a first solenoid valve (5.1), which controls the flow rate of the first flushing line (5).
3. The novel ternary precursor reaction synthesis automatic control system according to claim 2, characterized in that: The diaphragm pump (3) is connected to the inlet of the three-way valve (4) by a drain pipe (7), and the drain pipe (7) is equipped with a second solenoid valve (7.1) for controlling the flow rate.
4. The novel automatic control system for ternary precursor reaction synthesis according to claim 3, characterized in that: A second flushing pipeline (8) is connected between the detection feed line (2) and the diaphragm pump (3). The second flushing pipeline (8) is connected to the flushing water supply end (6). The flushing water supply end (6) is used to transport flushing water through the second flushing pipeline (8) to the detection feed line (2) and the input end of the diaphragm pump (3) for flushing.
5. The novel automatic control system for ternary precursor reaction synthesis according to claim 1, characterized in that: The laser particle size analyzer (9) and ammonia concentration tester (10) are electrically connected to a control terminal (11) for feeding back the collected data to the control terminal (11); The reactor (1) is equipped with an alkaline solution feed pipe (12) and an ammonia solution feed pipe (13), and the alkaline solution feed pipe (12) and the ammonia solution feed pipe (13) are respectively equipped with metering pumps (14); The control terminal (11) is electrically connected to the metering pump (14), and the flow rate of each feed pipe is controlled by the metering pump (14).