A kind of preparation device and method of calcium carbonate whisker

Abstract

The invention relates to the technical field of whisker preparation, and discloses a preparation device for calcium carbonate whiskers, including a bracket, a reactor is installed on the outer wall of the bracket, a rotating tube is rotated in the middle of the lower part of the reactor, multiple groups of air jets are installed on the outer wall of the rotating tube from top to bottom, and a mounting seat is installed on the top of the rotating tube. A preparation method for calcium carbonate whiskers is also disclosed, including the following steps: S1, preparing a reaction solution: introducing a calcium source solution into the reactor through a liquid inlet valve; S2, injecting carbon dioxide gas into the reactor: carbon dioxide enters the rotating tube through a gas cylinder, a connecting pipe, and two-way and three-way pipes of a flow meter, and is sprayed into the reaction solution by the air jet. By designing a gas circulation system, optimizing the layout of the air jets, and combining online monitoring and feedback control, the reaction efficiency is improved, the production cost is reduced, and the consistency and stability of quality indicators such as whisker particle size and morphology are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of whisker preparation, in particular to a device and a method for preparing calcium carbonate whiskers. Background Art

[0002] As the demand for high-quality calcium carbonate whiskers in industrial production continues to increase, traditional methods for preparing calcium carbonate whiskers face many challenges in terms of energy efficiency, output, and stability of product quality. Calcium carbonate whiskers are an important functional material that is widely used in industries such as coatings, plastics, and papermaking, especially in high-performance composite materials. Therefore, how to improve the production efficiency of calcium carbonate whiskers, reduce production costs, and ensure the quality of whiskers has become an important topic in current technological development.

[0003] The traditional method of preparing calcium carbonate whiskers usually relies on the reaction of carbon dioxide gas and calcium source solution, but this method has problems such as low carbon dioxide gas utilization, uneven reaction, and unstable product quality. First, there is often a certain amount of waste of carbon dioxide gas during the reaction process, which not only leads to increased production costs, but also affects the overall efficiency of the reaction. Secondly, due to changes in reaction conditions or improper control, the particle size and morphology of calcium carbonate whiskers are prone to inconsistency, which in turn affects the stability of product quality.

[0004] In view of the above problems, the present invention provides a device and method for preparing calcium carbonate whiskers. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device and method for preparing calcium carbonate whiskers, which solve the problems of low carbon dioxide gas utilization, uneven reaction and unstable product quality in the preparation process of calcium carbonate whiskers.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a preparation device for calcium carbonate whiskers, including a bracket, a reactor is installed on the outer wall of the bracket, a rotating tube is rotated in the middle of the lower part of the reactor, multiple groups of air nozzles are installed on the outer wall of the rotating tube from top to bottom, a mounting seat is installed on the top of the rotating tube, a stirring assembly is installed at the bottom of the mounting seat, and a liquid extraction assembly is installed in the middle of the mounting seat, which is used to extract the liquid at the bottom of the bracket into a measuring device, and the turbidity is detected by a turbidity sensor, and the detection data is transmitted to the processor in the display, and is processed by the online sampling and analysis system therein and sends out control signals to adjust the operating parameters of flowmeter 2, flowmeter 1 and motor, a driving assembly is installed below the outer wall of the rotating tube, and a circulating gas guide assembly is installed at the bottom of the rotating tube, which is used to introduce the gas in the gas cylinder into the reactor, and re-introduce the upper gas in the reactor into the liquid in the reactor.

[0007] Preferably, the stirring assembly includes multiple rotating rods, the top of each rotating rod rotates on the bottom of the mounting seat, the outer wall of each rotating rod is equipped with multiple stirring blades, and a mounting ring is provided in the reactor, and the bottoms of the multiple rotating rods rotate on the top of the mounting ring.

[0008] Preferably, each air jet nozzle in each group of the air jet nozzles is located between two adjacent groups of stirring blades, and its spraying direction is toward the fan direction of one group of stirring blades.

[0009] Preferably, the liquid extraction assembly includes a plurality of liquid guide tubes, the outer wall of each of the liquid guide tubes is installed in the middle of the mounting seat, the outer walls of the plurality of liquid guide tubes are connected to a communicating vessel, a connecting flange is rotatably provided on the top of the communicating vessel, the outer wall of the connecting flange is installed on the top of the reactor, one end of a water pump is installed at the bottom of each of the liquid guide tubes, and a liquid extraction nozzle is installed at the other end of the water pump.

[0010] Preferably, one end of a hose is installed on the top of the connecting flange, a measuring device is installed on the other end of the hose, an outer wall of the measuring device is installed on the outer wall of the bracket, and a turbidity sensor is installed in the middle of the measuring device.

[0011] Preferably, the driving assembly includes a motor, the bottom of the motor is installed on the bottom of the bracket, the motor driving end is installed with a pulley 1, the lower part of the rotating tube outer wall is installed with a pulley 2, and the outer parts of the pulleys 1 and 2 are provided with belts.

[0012] Preferably, the circulating air guide component includes a three-way pipe, the top of the three-way pipe is rotatably connected to the bottom of the rotating tube, one end of the three-way pipe is installed with one end of flowmeter 2, the other end of flowmeter 2 is installed with a connecting pipe, the other end of the connecting pipe is installed with a gas cylinder, the gas cylinder is installed on the outer wall of the bracket, the other end of the three-way pipe is installed with one end of flowmeter 1, the other end of flowmeter 1 is installed with one end of an air guide pipe, and the other end of the air guide pipe is connected to the top of the bracket.

[0013] Preferably, a liquid inlet valve is installed on the top of the reactor, a sewage discharge valve is installed on the bottom of the bracket, and a display is installed on the outer wall of the bracket via a telescopic bracket.

[0014] Preferably, the online sampling and analysis system comprises: A calcium ion concentration determination module is used to measure the calcium ion concentration in the reaction solution online; Data acquisition and processing module, used to collect real-time data of turbidity and calcium ion concentration, and perform pre-processing, analysis and calculation to generate control signals; The reaction process control module is used to adjust the gas flow rate and stirring speed operating parameters in the reactor according to the analysis data to optimize the reaction process; Reaction process optimization module, which is used to comprehensively analyze turbidity and calcium ion concentration and automatically adjust reaction conditions; The alarm and feedback module is used to monitor whether there are any abnormal conditions during the reaction process and send out alarm signals for timely adjustments; System display and operation module, used to display key parameters such as turbidity and calcium ion concentration in real time, and provide an operation interface for operators to adjust reaction parameters; Automatic regulation and feedback control systems are used to automatically adjust multiple parameters in the reaction process based on sensor data and feedback mechanisms.

[0015] A method for preparing calcium carbonate whiskers, which is used to prepare calcium carbonate whiskers using the above-mentioned calcium carbonate whisker preparation device, comprises the following steps: S1. Prepare reaction solution: introduce calcium source solution into the reaction kettle through the liquid inlet valve; S2. Injecting carbon dioxide gas into the reactor: carbon dioxide enters the rotating tube through the gas cylinder, connecting pipe, two-way pipe and three-way pipe of the flow meter, and is sprayed into the reaction liquid through the air nozzle to react with the calcium source to form calcium carbonate whiskers; S3, rotating and stirring the reaction liquid: the motor drives the rotating tube, driving the air jet nozzle to rotate, and at the same time, the stirring component in the reactor strengthens the mixing of the liquid by rotating; S4. Gas recycling: During the reaction, part of the carbon dioxide gas will float to the top of the reactor and separate from the liquid. The gas at the top of the reactor is reintroduced into the reactor through the gas guide tube and reacts with the remaining calcium source again through the rotating tube. S5. Real-time turbidity detection: The liquid extraction component in the reactor extracts the reaction liquid at the bottom and introduces it into the turbidity sensor for real-time monitoring; S6, data acquisition and analysis: the data acquisition and processing module collects turbidity data, and the online sampling and analysis system analyzes the turbidity and calcium ion concentration to generate real-time data of the reaction process; S7, feedback regulation reaction process: according to the data analysis results, the online sampling and analysis system sends a control signal to adjust the operating parameters of flow meter 1 and flow meter 2 and the motor structure, including gas flow and stirring speed, to optimize the reaction conditions; S8. End of reaction and discharge of products: After the reaction is completed, the remaining liquid and the generated calcium carbonate whiskers in the reactor are discharged through the drain valve to end the reaction process.

[0016] The present invention provides a device and method for preparing calcium carbonate whiskers, which have the following beneficial effects: 1. The present invention effectively improves the utilization rate of carbon dioxide gas in the reaction process through the design of the gas circulation system. Compared with the traditional method, the carbon dioxide gas is not wasted in the reaction process, but is guided back to the reactor through a precise circulation system to continue to react with the unreacted calcium source solution. This carbon dioxide recovery and reuse method greatly improves the utilization efficiency of each unit of gas, avoids waste, and reduces production costs.

[0017] 2. The present invention monitors the formation of calcium carbonate whiskers in real time during the reaction process through online sampling analysis and monitoring by turbidity sensors. The system can adjust reaction conditions such as gas flow, reaction temperature and reaction time according to key parameters such as turbidity and calcium ion concentration. Through this real-time feedback control, the stability and consistency of quality indicators such as particle size and morphology of calcium carbonate whiskers are ensured, avoiding the instability and risk of unqualified products that may occur during the reaction process.

[0018] 3. The present invention optimizes the position and layout design of the air nozzle so that the carbon dioxide gas can be sprayed into the reaction liquid evenly and efficiently. The design of the air nozzle is arranged from top to bottom, so that the carbon dioxide gas can not only penetrate into the liquid when sprayed, but also spray toward the surface of the stirring blade, further enhancing the contact effect between the gas and the liquid. Through this layout, the distribution of the gas in the liquid is more uniform, the reaction rate is improved, and the reaction efficiency of the carbon dioxide and the calcium source solution is significantly improved. At the same time, the optimization of the gas flow path avoids the retention or uneven distribution of the gas in the reaction liquid, further promotes the uniform generation of calcium carbonate whiskers, and ensures the stability of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of the internal structure of the reactor of the present invention; Figure 3 This is a top view of the interior of the reactor of the present invention; Figure 4 It is a schematic diagram of the structure of the driving assembly of the present invention; Figure 5 It is a structural schematic diagram of the stirring assembly of the present invention; Figure 6 It is a structural schematic diagram of the air jet of the present invention; Figure 7 It is a framework diagram of the online sampling and analysis system of the present invention; Figure 8 The present invention is a flow chart of the preparation method.

[0020] Among them, 1. bracket; 2. reactor; 3. rotating tube; 4. air jet; 5. motor; 6. pulley 1; 7. pulley 2; 8. belt; 9. tee pipe; 10. flow meter 1; 11. air guide pipe; 12. flow meter 2; 13. connecting pipe; 14. gas cylinder; 15. mounting base; 16. rotating rod; 17. stirring blade; 18. connecting vessel; 19. liquid guide pipe; 20. water pump; 21. liquid extraction nozzle; 22. connecting flange; 23. hose; 24. measuring device; 25. turbidity sensor; 26. telescopic bracket; 27. display; 28. liquid inlet valve; 29. ​​mounting ring; 30. drain valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Please see attached Figure 1 -Attached Figure 2 The embodiment of the present invention provides a preparation device of calcium carbonate whiskers, comprising a bracket 1, a reactor 2 is installed on the outer wall of the bracket 1, a rotating tube 3 is rotated in the middle of the lower part of the reactor 2, a plurality of groups of air nozzles 4 are installed on the outer wall of the rotating tube 3 from top to bottom, a mounting seat 15 is installed on the top of the rotating tube 3, a stirring assembly is installed at the bottom of the mounting seat 15, and a liquid extraction assembly is installed in the middle of the mounting seat 15, which is used to extract the bottom liquid in the bracket 1 into a measuring device 24, and the turbidity is detected by the turbidity sensor 25, and the detection data is transmitted to the processor in the display 27, and the online sampling and analysis system therein processes and sends a control signal to adjust the operating parameters of the flow meter 2 12, the flow meter 1 10 and the motor 5, a driving assembly is installed below the outer wall of the rotating tube 3, and a circulating gas guide assembly is installed at the bottom of the rotating tube 3, which is used to introduce the gas in the gas cylinder 14 into the reactor 2, and re-introduce the upper gas in the reactor 2 into the liquid in the reactor 2.

[0023] Specifically, when the device of the present invention is in use, the reaction solution is introduced into the reactor 2 through the liquid inlet valve 28. After the calcium source solution is introduced, the liquid in the reactor 2 is ready to react with the carbon dioxide gas to generate calcium carbonate whiskers. The carbon dioxide gas passes through the gas pipeline in the gas cylinder 14, passes through the connecting pipe 13 and the flow meter 12, and enters the rotating tube 3. A plurality of groups of air nozzles 4 are installed on the outer wall of the rotating tube 3 from top to bottom. The carbon dioxide gas is sprayed into the reaction liquid through the air nozzles 4 and reacts with the calcium source solution to generate calcium carbonate whiskers. The driving component drives the rotating tube 3 to rotate, thereby driving the air nozzles 4 to rotate. The rotating tube 3 not only evenly distributes the injected carbon dioxide gas, but also strengthens the mixing of the liquid. At the same time, the stirring component at the bottom of the mounting seat 15 further improves the contact efficiency between the gas and the liquid and enhances the reaction rate by rotating and stirring the reaction liquid.

[0024] During the reaction, part of the carbon dioxide gas will float to the top of the reactor 2 and separate from the reaction solution. The gas at the top of the reactor 2 is reintroduced into the reactor 2 through the gas guide pipe 11. The gas re-enters the reactor 2 through the circulating gas guide component and continues to react with the remaining calcium source solution, making full use of the carbon dioxide gas and avoiding waste.

[0025] The liquid extraction assembly 19 installed in the middle of the mounting seat 15 extracts a certain amount of reaction liquid from the bottom of the reactor 2. The extracted liquid enters the turbidity sensor 25 through the connecting vessel 18 for real-time monitoring. The turbidity sensor 25 detects the generation of calcium carbonate whiskers in the reaction liquid and transmits the data to the processor in the display 27 for further analysis. The online sampling and analysis system in the display 27 processes and analyzes the turbidity data to obtain calcium ion concentration and reaction process data. Based on these real-time data, the online analysis system sends a control signal to adjust the operating parameters of flow meter 10, flow meter 2 12, and motor 5, control the gas flow and stirring speed, optimize the reaction process, and ensure the efficient preparation of calcium carbonate whiskers.

[0026] The device of the present invention makes the reaction process more uniform and efficient through precise stirring, gas injection and recycling systems. Through real-time turbidity detection and data feedback adjustment, the online sampling and analysis system finely controls the reaction conditions, thereby improving the production efficiency and product quality of calcium carbonate whiskers.

[0027] Please see attached Figure 5 The stirring assembly includes a plurality of rotating rods 16 , the top of each rotating rod 16 rotates on the bottom of the mounting seat 15 , a plurality of stirring blades 17 are installed on the outer wall of each rotating rod 16 , a mounting ring 29 is provided in the reactor 2 , and the bottoms of the plurality of rotating rods 16 rotate on the top of the mounting ring 29 .

[0028] Specifically, the mixing effect of the liquid in the reactor 2 is enhanced by the synergistic effect of multiple rotating rods 16 and stirring blades 17. The top of each rotating rod 16 is connected to the bottom of the mounting seat 15 and can rotate freely, ensuring that the rotating rod 16 has sufficient freedom of movement during the reaction process. The outer wall of the rotating rod 16 is equipped with multiple stirring blades 17. The main function of these stirring blades 17 is to promote the flow and mixing of the reaction liquid when rotating in the reactor 2, thereby increasing the contact area between the gas and the liquid and accelerating the reaction of the carbon dioxide and the calcium source.

[0029] The mounting ring 29 provided in the reactor 2 is located at the bottom of the plurality of rotating rods 16 . The mounting ring 29 provides support and guidance to ensure stable rotation of the rotating rods 16 and prevent the rotating rods 16 from deviating from a predetermined trajectory.

[0030] The stirring assembly realizes uniform stirring in the reactor 2 through the rotation of multiple groups of rotating rods 16 and stirring blades 17, effectively avoiding local precipitation or aggregation of the calcium source solution and gas, thereby improving the reaction efficiency. In addition, the rotating stirring blades 17 can also promote the uniform mixing of carbon dioxide gas and the reaction solution, which is conducive to the formation of calcium carbonate whiskers.

[0031] Please see attached Figure 3 Each air jet nozzle 4 in each group of air jet nozzles 4 is located between two adjacent groups of stirring blades 17 , and its spraying direction is toward the fan direction of one group of stirring blades 17 .

[0032] Specifically, the relative position and spray direction between the air nozzle 4 and the stirring blade 17 are designed to optimize the mixing effect of gas and liquid, thereby promoting the formation of calcium carbonate whiskers.

[0033] Each group of air nozzles 4 is mounted on the outer wall of the rotating tube 3, and each air nozzle 4 is located between two adjacent groups of stirring blades 17. The jetting direction of the air nozzle 4 is toward the fan direction of one group of stirring blades 17. Such a design enables the injected carbon dioxide gas to directly impact the stirring blades 17, and the rotation of the stirring blades 17 drives the gas and liquid to be fully mixed.

[0034] Specifically, the carbon dioxide gas ejected from the air nozzle 4 is directed toward the stirring blade 17 along the ejection direction. This directional ejection helps to enhance the uniformity of gas distribution in the liquid, and also helps the gas to pass through the liquid, ensuring that the carbon dioxide and the calcium source are fully in contact and react. The contact and stirring action of the ejected gas and the stirring blade 17 form a dynamic fluid movement, so that the bubbles are dispersed in the reaction solution, effectively improving the solubility and reaction rate of carbon dioxide.

[0035] In addition, the stirring blade 17 drives the liquid to flow by rotating, which not only improves the mixing effect of gas and liquid, but also prevents the precipitation of particles in the liquid, thereby improving the efficiency of the reaction.

[0036] Please see attached Figure 6 The liquid extraction component includes a plurality of liquid guide tubes 19, the outer wall of each liquid guide tube 19 is installed in the middle of the mounting seat 15, the outer walls of the plurality of liquid guide tubes 19 are connected with a communicating vessel 18, a connecting flange 22 is rotatably provided on the top of the communicating vessel 18, the outer wall of the connecting flange 22 is installed on the top of the reactor 2, one end of a water pump 20 is installed at the bottom of each liquid guide tube 19, and a liquid extraction nozzle 21 is installed at the other end of the water pump 20.

[0037] Specifically, the reaction liquid can be effectively extracted and processed through the cooperation of the liquid guide tube 19, the connecting vessel 18, the connecting flange 22, the water pump 20 and the liquid extraction nozzle 21.

[0038] First, multiple liquid guide tubes 19 are installed in the middle of the mounting seat 15 to ensure that the position of the liquid guide tubes is stable and the liquid at the bottom of the reactor 2 can be smoothly extracted. The outer wall of each liquid guide tube 19 is connected to the communicating vessel 18, which plays the role of integration and guidance, and collects the reaction liquid from multiple liquid guide tubes 19. A connecting flange 22 is installed on the top of the communicating vessel 18, which is connected to the top of the reactor 2 through the connecting flange 22, so as to ensure that the liquid can be smoothly extracted from the reactor 2 and transported to the water pump 20.

[0039] The connecting flange 22 is installed on the top of the reactor 2 through its outer wall, and ensures a firm connection while preventing liquid leakage. A water pump 20 is installed at the bottom of each liquid guide tube 19. The function of the water pump 20 is to extract the reaction liquid and guide the liquid to the downstream system for further processing through the liquid extraction nozzle 21. One end of the water pump 20 is connected to the liquid guide tube 19, and the other end is equipped with the liquid extraction nozzle 21. Its main task is to suck and transport the reaction liquid at the bottom through the water pump 20.

[0040] The design of the liquid extraction component can not only effectively extract the reaction liquid at the bottom, but also collect liquid samples according to the reaction progress. Through this process, the composition changes of the reaction liquid, such as turbidity, can be monitored in time, and provide real-time data support for the subsequent control system. The extracted liquid can be tested for chemical composition through other modules to further optimize the reaction process.

[0041] Please see attached Figure 1 One end of a hose 23 is installed on the top of the connecting flange 22, a measuring device 24 is installed on the other end of the hose 23, the outer wall of the measuring device 24 is installed on the outer wall of the bracket 1, and a turbidity sensor 25 is installed in the middle of the measuring device 24.

[0042] Specifically, when the reaction liquid in the reactor 2 is extracted by the liquid extraction assembly and transported to the measuring device 24, the liquid flows through the hose 23 and enters the measuring device 24. The hose 23 serves to connect the reactor 2 and the measuring device 24, ensuring that the liquid sample can be guided to the measuring device without interfering with other operations in the reactor 2.

[0043] A turbidity sensor 25 is installed in the measuring device 24. The sensor determines the change in solid particle concentration during the reaction process by real-time monitoring of the turbidity in the reaction liquid. Turbidity is a key indicator parameter in the reaction process because the formation of calcium carbonate whiskers will cause the turbidity of the liquid to change. By detecting the turbidity of the liquid, the consumption of the calcium source and the formation of whiskers during the reaction process can be indirectly inferred.

[0044] As a key detection element, the turbidity sensor 25 provides real-time data for subsequent reaction optimization through accurate measurement. The turbidity data detected by the sensor will be transmitted to the control module of the system. After analysis and processing, the parameters of the reaction process such as gas flow rate, stirring speed, etc. will be adjusted according to the detection results.

[0045] Please refer to the attached Figure 4 The driving assembly includes a motor 5, the bottom of the motor 5 is installed at the bottom of the bracket 1, a pulley 6 is installed at the driving end of the motor 5, a pulley 2 7 is installed below the outer wall of the rotating tube 3, and a belt 8 is provided on the outer side of the pulley 1 6 and the pulley 2 7.

[0046] Specifically, the bottom of the motor 5 is installed at the bottom of the bracket 1, and is connected to the pulley 1 6 through the driving end. The motor 5 drives the pulley 1 6 to rotate through electricity, and the pulley 1 6 is connected to the pulley 2 7 through the belt 8. When the pulley 1 6 rotates, the belt 8 is driven to rotate, and the pulley 2 7 is rotated accordingly. The pulley 2 7 is installed below the outer wall of the rotating tube 3, and the rotating tube 3 is driven to rotate through the transmission effect of the belt 8.

[0047] The rotation of the rotating tube 3 not only helps the gas such as carbon dioxide to be sprayed into the reaction liquid through the gas nozzle 4, but also promotes the uniform mixing of the liquid in the reactor 2. Through the movement of the rotating tube 3, the direction and speed of the gas spray and the contact area between the liquid and the gas are increased, thereby accelerating the reaction of carbon dioxide and the calcium source and promoting the formation of calcium carbonate whiskers.

[0048] In addition, the rotation of the rotating tube 3 also affects the stirring components such as the stirring blades 17 and the flow of the reaction liquid in the reactor 2, making the reaction more uniform and efficient. The belt 8 serves as a transmission medium connecting the motor 5 and the rotating tube 3, ensuring the driving stability and transmission efficiency, thereby effectively controlling the movement of the rotating tube 3.

[0049] The driving assembly outputs power from the motor 5 and transmits it through the belt 8, so that the rotating tube 3 can rotate continuously, thereby providing necessary power support for gas injection, liquid stirring and homogenization of the reaction process in the reactor 2.

[0050] Please refer to the attached Figure 1 -Attached Figure 2The circulating air guide component includes a three-way pipe 9, the top of the three-way pipe 9 is rotatably connected to the bottom of the rotating tube 3, one end of the three-way pipe 9 is installed with one end of a flow meter 12, the other end of the flow meter 12 is installed with a connecting pipe 13, the other end of the connecting pipe 13 is installed with a gas cylinder 14, the gas cylinder 14 is installed on the outer wall of the bracket 1, the other end of the three-way pipe 9 is installed with one end of a flow meter 10, the other end of the flow meter 10 is installed with one end of an air guide pipe 11, and the other end of the air guide pipe 11 is connected to the top of the bracket 1.

[0051] Specifically, the carbon dioxide gas first enters the connecting pipe 13 through the gas cylinder 14. Before entering the connecting pipe 13, the gas flow is measured by the flow meter 12 to ensure accurate control of the gas flow. The flow meter 12 is used to monitor and adjust the gas flow to ensure that the amount of gas entering meets the reaction requirements.

[0052] The gas after passing through the flow meter 12 enters the tee pipe 9 through the connecting pipe 13, and is guided by the tee pipe 9 into the rotating tube 3. The gas nozzle 4 in the rotating tube 3 sprays the carbon dioxide gas into the reaction liquid evenly, reacts with the calcium source in the reaction liquid, and generates calcium carbonate whiskers.

[0053] During the reaction, part of the carbon dioxide gas will float to the top of the reactor 2, forming a separation of gas and liquid. The gas at the top of the reactor 2 enters the other end of the three-way pipe 9 through the gas guide pipe 11, and the flow rate is monitored by the flow meter 10 to ensure that the gas re-enters the system. The flow meter 10 controls and adjusts the flow rate of the gas to prevent too much or too little gas from entering the reaction system.

[0054] After passing through flow meter 10, the gas is reintroduced into the liquid in the reactor 2 through the gas guide pipe 11 and the three-way pipe 9 to participate in the subsequent reaction process. In this way, the incompletely reacted carbon dioxide is recycled, effectively reducing the waste of gas, ensuring the continuous reaction, and avoiding excessive consumption of carbon dioxide.

[0055] Please refer to the attached Figure 1 A liquid inlet valve 28 is installed on the top of the reactor 2, a sewage valve 30 is installed at the bottom of the bracket 1, and a display 27 is installed on the outer wall of the bracket 1 through a telescopic bracket 26.

[0056] Please refer to the attached Figure 7 , the online sampling and analysis system includes: A calcium ion concentration determination module is used to measure the calcium ion concentration in the reaction solution online; Data acquisition and processing module, used to collect real-time data of turbidity and calcium ion concentration, and perform pre-processing, analysis and calculation to generate control signals; A reaction process control module is used to adjust the gas flow rate and stirring speed operating parameters in the reactor 2 according to the analysis data to optimize the reaction process; Reaction process optimization module, which is used to comprehensively analyze turbidity and calcium ion concentration and automatically adjust reaction conditions; The alarm and feedback module is used to monitor whether there are any abnormal conditions during the reaction process and send out alarm signals for timely adjustments; System display and operation module, used to display key parameters such as turbidity and calcium ion concentration in real time, and provide an operation interface for operators to adjust reaction parameters; Automatic regulation and feedback control systems are used to automatically adjust multiple parameters in the reaction process based on sensor data and feedback mechanisms.

[0057] Specifically, first, the calcium ion concentration determination module monitors the liquid in the reactor 2 in real time through the turbidity sensor 25 and the calcium ion concentration detection technology. The function of this module is to accurately understand the changes in the reaction process through the real-time data of turbidity and calcium ion concentration, and timely detect whether there is an unreacted calcium source or other abnormal reaction behavior.

[0058] Subsequently, the data acquisition and processing module collects real-time data from the turbidity sensor 25 and the calcium ion concentration determination module, and performs preprocessing, analysis and calculation. After the data is analyzed, a control signal is generated to optimize the reaction process and ensure that the reaction conditions meet the optimal generation requirements of calcium carbonate whiskers.

[0059] According to the above analysis, the reaction process control module uses the generated control signal to adjust the gas flow rate, stirring speed and other operating parameters in the reactor 2 to ensure that the mixed reaction of gas and liquid reaches the optimal state during the reaction process. This module is responsible for real-time adjustment to achieve a more efficient reaction.

[0060] At the same time, the reaction process optimization module automatically adjusts the reaction conditions, including gas flow rate, stirring speed, etc., through comprehensive analysis of turbidity and calcium ion concentration to maintain the stability of the reaction, ensure complete reaction of the calcium source, and avoid the occurrence of side reactions.

[0061] To ensure the safety of the reaction process, the alarm and feedback module monitors abnormal conditions during the entire reaction process, such as abnormal gas flow, changes in solution concentration, etc., and issues an alarm signal when an abnormality is detected. This module helps operators make timely adjustments to prevent adverse situations from occurring.

[0062] In addition, the system display and operation module displays key parameters of the reaction process, such as turbidity and calcium ion concentration, in real time, helping operators to intuitively understand the reaction status, and provides an operation interface that enables operators to manually or automatically adjust the parameters during the reaction process.

[0063] Finally, the automatic adjustment and feedback control system automatically adjusts the reaction parameters based on sensor data and feedback mechanisms without human intervention to achieve the optimal reaction state. It reduces manual operations and improves the degree of automation through self-adjustment, making the entire reaction process more stable and efficient.

[0064] Please see attached Figure 8 A method for preparing calcium carbonate whiskers, which is used to prepare calcium carbonate whiskers using a preparation device, comprising the following steps: S1, prepare reaction solution: introduce calcium source solution into reaction kettle 2 through liquid inlet valve 28; S2, injecting carbon dioxide gas into the reactor 2: the carbon dioxide enters the rotating tube 3 through the gas cylinder 14, the connecting pipe 13, the flow meter 12, and the three-way pipe 9, and is sprayed into the reaction liquid by the air nozzle 4, and reacts with the calcium source to form calcium carbonate whiskers; S3, rotating and stirring the reaction liquid: the motor 5 drives the rotating tube 3, driving the air nozzle 4 to rotate, and at the same time, the stirring component in the reactor 2 strengthens the mixing of the liquid by rotating; S4, gas recycling: During the reaction, part of the carbon dioxide gas will float to the top of the reactor 2 and separate from the liquid. The gas at the top of the reactor 2 is reintroduced into the reactor 2 through the gas guide pipe 11 and reacts with the remaining calcium source again through the rotating tube 3; S5, real-time turbidity detection: the liquid extraction component in the reactor 2 extracts the reaction liquid at the bottom and introduces it into the turbidity sensor 25 for real-time monitoring; S6, data acquisition and analysis: the data acquisition and processing module collects turbidity data, and the online sampling and analysis system analyzes the turbidity and calcium ion concentration to generate real-time data of the reaction process; S7, feedback regulation reaction process: according to the data analysis results, the online sampling and analysis system sends a control signal to adjust the operating parameters of the flow meter 10, the flow meter 2 12, and the motor 5 structure, including the gas flow rate and the stirring speed, to optimize the reaction bar; S8, termination of reaction and discharge of products: After the reaction is completed, the remaining liquid in the reactor and the generated calcium carbonate whiskers are discharged through the drain valve 30, thereby terminating the reaction process.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing calcium carbonate whiskers, comprising a support (1), characterized in that: A reaction kettle (2) is mounted on the outer wall of the support (1), a rotating tube (3) is rotated in the middle of the lower part of the reaction kettle (2), a plurality of groups of air nozzles (4) are mounted on the outer wall of the rotating tube (3) from top to bottom, a mounting seat (15) is mounted on the top of the rotating tube (3), a stirring assembly is mounted on the bottom of the mounting seat (15), a liquid extraction assembly is mounted in the middle of the mounting seat (15), and the liquid extraction assembly is used to extract the liquid at the bottom of the support (1) into the measuring device (24), and the turbidity is detected by the turbidity sensor (25). The detection data is transmitted to the processor in the display (27), and the online sampling and analysis system therein processes the data and sends out control signals to adjust the operating parameters of the flow meter 2 (12), the flow meter 1 (10) and the motor (5). A driving assembly is mounted on the lower part of the outer wall of the rotating tube (3), and a circulating gas guide assembly is mounted on the bottom of the rotating tube (3), and the circulating gas guide assembly is mounted on the bottom of the rotating tube (3), and the circulating gas guide assembly is used to introduce the gas in the gas cylinder (14) into the reaction kettle (2), and to re-introduce the gas at the upper part of the reaction kettle (2) into the liquid in the reaction kettle (2).

2. A preparation device for calcium carbonate whiskers according to claim 1, characterized in that, The stirring assembly comprises a plurality of rotating rods (16), the top of each rotating rod (16) rotating on the bottom of a mounting seat (15), the outer wall of each rotating rod (16) being mounted with a plurality of stirring blades (17), a mounting ring (29) being arranged in the reaction kettle (2), and the bottoms of the plurality of rotating rods (16) rotating on the top of the mounting ring (29).

3. A preparation device for calcium carbonate whiskers according to claim 2, characterized in that, Each air jet nozzle (4) in each group of the air jet nozzles (4) is located between two adjacent groups of stirring blades (17), and its spraying direction is toward the fan direction of one group of stirring blades (17).

4. A preparation device for calcium carbonate whiskers according to claim 1, characterized in that, The liquid extraction assembly comprises a plurality of liquid guide tubes (19), the outer wall of each of the liquid guide tubes (19) being mounted on the middle of the mounting seat (15), the outer walls of the plurality of liquid guide tubes (19) being connected to a communicating vessel (18), a connecting flange (22) being rotatably provided at the top of the communicating vessel (18), the outer wall of the connecting flange (22) being mounted on the top of the reaction kettle (2), one end of a water pump (20) being mounted at the bottom of each of the liquid guide tubes (19), and a liquid extraction nozzle (21) being mounted at the other end of the water pump (20).

5. A preparation device for calcium carbonate whiskers according to claim 4, characterized in that, One end of a hose (23) is mounted on the top of the connecting flange (22), a measuring device (24) is mounted on the other end of the hose (23), an outer wall of the measuring device (24) is mounted on the outer wall of the bracket (1), and a turbidity sensor (25) is mounted in the middle of the measuring device (24).

6. A preparation device for calcium carbonate whiskers according to claim 1, characterized in that, The driving assembly comprises a motor (5), the bottom of the motor (5) is mounted on the bottom of the bracket (1), a pulley 1 (6) is mounted on the driving end of the motor (5), a pulley 2 (7) is mounted below the outer wall of the rotating tube (3), and a belt (8) is sleeved on the outer sides of the pulley 1 (6) and the pulley 2 (7).

7. A preparation device for calcium carbonate whiskers according to claim 1, characterized in that, The circulating air guide component comprises a three-way pipe (9), the top of the three-way pipe (9) is rotatably connected to the bottom of the rotating tube (3), one end of the three-way pipe (9) is mounted with one end of flow meter two (12), the other end of the flow meter two (12) is mounted with a connecting pipe (13), the other end of the connecting pipe (13) is mounted with a gas cylinder (14), the gas cylinder (14) is mounted on the outer wall of the bracket (1), the other end of the three-way pipe (9) is mounted with one end of flow meter one (10), the other end of the flow meter one (10) is mounted with one end of an air guide pipe (11), and the other end of the air guide pipe (11) is connected to the top of the bracket (1).

8. A preparation device for calcium carbonate whiskers according to claim 1, characterized in that, A liquid inlet valve (28) is installed on the top of the reaction kettle (2), a sewage discharge valve (30) is installed on the bottom of the bracket (1), and a display (27) is installed on the outer wall of the bracket (1) via a telescopic bracket (26).

9. A preparation device for calcium carbonate whiskers according to claim 1, characterized in that, The online sampling and analysis system comprises: A calcium ion concentration determination module is used to measure the calcium ion concentration in the reaction solution online; Data acquisition and processing module, used to collect real-time data of turbidity and calcium ion concentration, and perform pre-processing, analysis and calculation to generate control signals; A reaction process control module, used to adjust the gas flow rate and stirring speed operating parameters in the reactor (2) according to the analysis data, so as to optimize the reaction process; Reaction process optimization module, which is used to comprehensively analyze turbidity and calcium ion concentration and automatically adjust reaction conditions; The alarm and feedback module is used to monitor whether there are any abnormal conditions during the reaction process and send out alarm signals for timely adjustments; System display and operation module, used to display key parameters such as turbidity and calcium ion concentration in real time, and provide an operation interface for operators to adjust reaction parameters; Automatic regulation and feedback control systems are used to automatically adjust multiple parameters in the reaction process based on sensor data and feedback mechanisms.

10. A method for preparing calcium carbonate whiskers, characterized in that: The method is used to prepare the calcium carbonate whisker using the preparation device of any one of claims 1 to 9, comprising the following steps: S1, preparing a reaction solution: introducing a calcium source solution into a reaction kettle (2) through a liquid inlet valve (28); S2, injecting carbon dioxide gas into the reactor (2): the carbon dioxide enters the rotating tube (3) through the gas cylinder (14), the connecting pipe (13), the second flow meter (12), and the three-way pipe (9), and is sprayed into the reaction liquid through the air nozzle (4), where it reacts with the calcium source to generate calcium carbonate whiskers; S3, rotating and stirring the reaction liquid: the motor (5) drives the rotating tube (3), driving the air nozzle (4) to rotate, and at the same time, the stirring component in the reaction kettle (2) strengthens the mixing of the liquid by rotating; S4. Gas recycling: During the reaction process, part of the carbon dioxide gas will float to the top of the reactor (2) and separate from the liquid. The gas at the top of the reactor (2) is reintroduced into the reactor (2) through the gas guide tube (11) and reacts with the remaining calcium source again through the rotating tube (3); S5, real-time turbidity detection: the liquid extraction component in the reaction kettle (2) extracts the reaction liquid at the bottom and introduces it into the turbidity sensor (25) for real-time monitoring; S6, data acquisition and analysis: the data acquisition and processing module collects turbidity data, and the online sampling and analysis system analyzes the turbidity and calcium ion concentration to generate real-time data of the reaction process; S7, feedback regulation of the reaction process: according to the data analysis results, the online sampling and analysis system sends a control signal to adjust the operating parameters of the flow meter 1 (10) and the flow meter 2 (12) and the motor (5), including the gas flow rate and the stirring speed, to optimize the reaction conditions; S8, termination of reaction and discharge of product: After the reaction is completed, the remaining liquid and the generated calcium carbonate whiskers in the reactor are discharged through the drain valve (30), thereby terminating the reaction process.

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