Impurity removal pretreatment device for ferric chloride solution

Abstract

The invention relates to the field of chemical equipment, in particular to a ferric chloride solution impurity removal pretreatment device which comprises a stirring assembly, a monitoring assembly and a control assembly, the stirring assembly is installed on the bottom wall of a kettle cover and used for stirring and mixing during impurity removal, and meanwhile the stirring assembly is further used for conveying oxygen during impurity removal; the exhaust port of the kettle body is provided with a recovery assembly for recovering gas generated in the impurity removal process of the ferric chloride solution; the monitoring assembly is used for monitoring reaction data in the kettle body in real time during impurity removal of the ferric chloride solution, and the control assembly is used for performing on-off and power control on driving parts in the heating assembly and the stirring assembly and performing on-off control on the recovery assembly and the oxygen supply assembly according to the real-time monitoring data. Oxygen supply and stirring mixing are synchronously carried out, meanwhile, harmful gas is effectively recycled and treated through the recycling assembly, and the purposes of improving the impurity removal efficiency, reducing energy consumption, reducing environmental pollution and improving the safety and convenience of production operation are achieved.

Description

Technical Field

[0001] The invention relates to the field of chemical equipment, and in particular to a ferric chloride solution impurity removal pretreatment device. Background Art

[0002] In the chemical production process, ferric chloride solution, as an indispensable chemical raw material, is widely used in many key fields due to its unique properties, including but not limited to water treatment, catalyst preparation, printing and dyeing, papermaking and wastewater treatment. The effect of ferric chloride solution in these applications directly depends on its purity and quality. However, in the actual production process, ferric chloride solution is often contaminated by a variety of impurities, including ferrous chloride, suspended matter, organic matter and other inorganic salts. The presence of these impurities will not only reduce the performance of ferric chloride solution, but may also have an adverse effect on subsequent processes and even affect the quality of the final product.

[0003] In order to ensure the quality and performance of ferric chloride solution, pretreatment of it for impurity removal has become an indispensable part of chemical production. Traditional methods for impurity removal of ferric chloride solution mainly include physical filtration, chemical precipitation and oxidation-reduction. Although the physical filtration method can remove some suspended matter and particulate matter, it is not effective in removing soluble impurities; the chemical precipitation method requires the addition of additional chemical reagents, which increases production costs and may introduce new impurities; and the oxidation-reduction method relies on the reaction of oxidants such as oxygen with impurities, but traditional oxidation impurity removal methods often have problems such as uneven oxygen dispersion, low reaction efficiency and high energy consumption.

[0004] In view of the above problems, most of the existing ferric chloride solution impurity removal pretreatment devices adopt multiple or single methods for treatment, but all of them have the following shortcomings: first, the method of mixing reagents almost completely relies on the free mixing and reaction of each reagent, and cannot truly achieve full mixing of the mixed reagents, especially the release method of oxygen cannot ensure good mixing with the solution, thereby affecting the reaction efficiency; second, after the reaction is completed, the solution needs to be transferred to a heating box for heating and evaporation to remove moisture. This process not only increases the complexity of the operation, but may also cause solution adhesion and material loss due to multiple transfers.

[0005] In summary, in order to overcome the deficiencies of the prior art and improve the efficiency and safety of the pretreatment of ferric chloride solution for impurity removal, the present invention proposes a novel pretreatment device for ferric chloride solution for impurity removal. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a ferric chloride solution impurity removal pretreatment device, which realizes the simultaneous oxygen supply and stirring and mixing by integrating a stirring component and an oxygen supply component. At the same time, a recovery component is installed at the exhaust port to effectively recover and treat harmful gases, aiming to improve the impurity removal efficiency, reduce energy consumption, reduce environmental pollution, and enhance the safety and convenience of production operations.

[0007] In order to achieve the above object, the technical scheme of the present invention is as follows: a ferric chloride solution impurity removal pretreatment device, comprising a reactor for ferric chloride solution impurity removal, the reactor comprising a reactor body and a reactor cover, the reactor cover is provided with a liquid inlet, the reactor body is provided with an exhaust port and a liquid outlet, a heating component is installed at the bottom of the reactor body, and further comprising a stirring component, a monitoring component and a control component, the stirring component is installed on the bottom wall of the reactor cover, the stirring component is used to stir and mix the ferric chloride solution in the reactor body when impurities are removed, and the exhaust port of the reactor body is installed with a recovery component for recovering gas generated during the impurity removal process of the ferric chloride solution;

[0008] The stirring assembly includes a driving member, which is fixedly connected to the bottom wall of the kettle cover. The output shaft of the driving member is coaxially fixedly connected with an oxygen supply assembly for providing oxygen. A stirring shaft is installed at the output end of the oxygen supply assembly. The stirring shaft is a hollow structure. The stirring shaft is connected to the output end of the oxygen supply assembly. A plurality of stirring rods are fixedly connected to the stirring shaft. The stirring rods are all hollow structures. The stirring rods are connected to the stirring shaft. Air outlet holes are opened on the top of the stirring shaft and the stirring rods.

[0009] The monitoring component is used to monitor the reaction data inside the kettle body when the ferric chloride solution is removed from impurities in real time and transmit the real-time monitoring data to the control component. The control component is used to start and close the driving parts in the heating component and the stirring component and control the power according to the monitoring data of the monitoring component. At the same time, the control component is also used to start and close the recovery component and the oxygen supply component according to the monitoring data.

[0010] The technical principle of the above scheme is as follows: the stirring assembly not only stirs and mixes the solution, but also integrates the oxygen supply function. The driving member (such as a motor) drives the stirring shaft and the stirring rod to rotate, and at the same time, the oxygen supply assembly delivers oxygen into the hollow structure of the stirring shaft, and then the oxygen is evenly released into the solution through the air outlet holes on the stirring shaft and the stirring rod. This design realizes the simultaneous supply of oxygen and stirring and mixing, and improves the dispersion efficiency and solubility of oxygen in the solution.

[0011] During the stirring process, the rotating stirring shaft and stirring rod generate eddies in the solution, which helps to break the local concentration gradient in the solution and improve the mass transfer efficiency. At the same time, the relatively low-pressure area formed by the eddies in the center of the kettle promotes the natural flow and redistribution of oxygen in the kettle. Some dissolved and undissolved oxygen will be sucked into the stirring shaft and then released back into the solution through the vents, forming a closed-loop gas circulation system.

[0012] The monitoring component collects the reaction data inside the kettle in real time and transmits the data to the control component. The control component accurately starts and closes the heating component, stirring component, oxygen supply component and recovery component according to the preset conditions and real-time data to ensure the stability and efficiency of the reaction process.

[0013] The above scheme has the following beneficial effects:

[0014] 1. This solution realizes the simultaneous supply of oxygen and stirring and mixing by integrating the stirring component with the oxygen supply component. This design ensures that oxygen can be quickly and evenly dispersed into the ferric chloride solution, increases the contact area and opportunity between oxygen and impurities in the solution, thereby accelerating the rate of oxidation reaction or other chemical reactions and significantly improving the reaction efficiency.

[0015] 2. In this solution, during the stirring process, the vortex and negative pressure effect formed by the rotating stirring shaft and stirring rod in the solution promote the natural flow and redistribution of oxygen. Some dissolved and undissolved oxygen is sucked into the stirring shaft and released back into the solution, forming a closed-loop gas circulation system. This design not only improves the utilization rate of oxygen, but also reduces the waste of oxygen and optimizes the use of resources.

[0016] 3. In this solution, the rotational motion of the stirring assembly not only promotes the dispersion and dissolution of oxygen in the solution, but also breaks the local concentration gradient in the solution and improves the mass transfer efficiency. This enhanced mixing uniformity helps ensure the uniform distribution of the reactants in the solution, thereby improving the consistency and repeatability of the reaction.

[0017] 4. This solution realizes intelligent control of the reaction process by collecting the reaction data inside the kettle in real time through the monitoring component and transmitting the data to the control component. The control component accurately opens and closes the heating component, stirring component, oxygen supply component and recovery component according to the preset conditions and real-time data, ensuring the stability and efficiency of the reaction process. This intelligent control not only improves production efficiency, but also reduces the difficulty of operation and the risk of human error.

[0018] 5. In this solution, a recovery component is installed at the exhaust port of the reactor to recover the gas generated during the impurity removal process of the ferric chloride solution, which helps to reduce the emission of harmful gases and improve the safety of the production environment. At the same time, the precise control of the oxygen supply by the control component can prevent safety hazards caused by excessive oxygen and ensure the safety of the reaction process.

[0019] 6. This solution reduces the complexity and failure points of the equipment, and reduces the difficulty and cost of equipment maintenance due to the integrated design of the stirring component and the oxygen supply component and the application of intelligent control. In addition, by optimizing resource utilization and improving reaction efficiency, it also indirectly reduces production costs and energy consumption.

[0020] Furthermore, the recovery component includes a first recovery pipe, one end of which is connected to the exhaust port, and a first-level recovery tank is installed at the other end of the first recovery pipe. The first-level recovery tank is filled with recovery liquid, and the end of the first recovery pipe away from the exhaust port passes through the first-level recovery tank and extends to the inside of the first-level recovery tank. The height of the pipe mouth of the first recovery pipe is lower than the liquid level of the recovery liquid in the first-level recovery tank.

[0021] Beneficial effects: By connecting one end of the first recovery pipe to the exhaust port of the reactor and extending the other end to the inside of the primary recovery tank and below the liquid level of the recovery liquid, the harmful gases (such as chlorine, etc.) generated during the reaction can be effectively introduced into the recovery tank. These gases will be absorbed or reacted in the recovery liquid, thereby reducing or eliminating the direct emission of harmful gases and protecting the production environment and personnel health. If harmful gases are directly discharged into the air, they may bring safety hazards such as fire, explosion or poisoning. The design of the recovery component greatly reduces these potential safety risks and improves the safety of the production process by timely and effectively introducing these gases into the recovery tank for treatment. The recovery liquid is not only used to absorb harmful gases, but also may be used to recover useful components or convert them into other valuable substances through subsequent treatment (such as regeneration, separation, etc.). This way of resource recycling not only helps to reduce resource waste, but also brings additional economic benefits to the enterprise. The direct emission of harmful gases will pollute the atmospheric environment, affect the ecological balance and human health. The effective recovery and treatment of harmful gases by the recovery component can significantly reduce environmental pollution, which is in line with the concept of sustainable development and green production.

[0022] Furthermore, a cooler is installed on the first recovery pipe, a one-way valve is installed on one end of the first recovery pipe connected to the exhaust port, and an electric nozzle is installed on one end of the first recovery pipe connected to the first-level recovery tank. The cooler, the one-way valve and the electric nozzle are all connected to the control component signal, and the control component controls the opening and closing of the cooler, the one-way valve and the electric nozzle according to the real-time monitoring data of the monitoring component.

[0023] Beneficial effects: The installation of the cooler can effectively reduce the temperature of the gas entering the primary recovery tank. In some chemical reactions, high-temperature gas may have an adverse effect on the recovery liquid or recovery tank, and even cause safety risks. Precooling the gas through the cooler can ensure that the gas is within a safe temperature range when entering the recovery tank, protecting the performance of the recovery equipment and the recovery liquid. The setting of the one-way valve can effectively prevent the gas or liquid in the primary recovery tank from flowing back to the reactor when the pressure changes. This backflow not only affects the stability of the reaction process, but also may cause safety hazards to equipment and personnel. The automatic opening and closing function of the one-way valve is controlled by the control component according to the real-time monitoring data, ensuring the unidirectionality and safety of the gas flow. The installation of the electric nozzle can spray harmful gases in the recovery liquid in the form of mist, forming a large number of gas-liquid contact surfaces, and promoting the dissolution and absorption of the gas. By connecting the cooler, the one-way valve and the electric nozzle to the control component through signal connection, the intelligent control of the entire recovery process is realized. The control component can accurately adjust the opening and closing and operating status of each device according to the real-time monitoring data of the monitoring component to ensure the stability and efficiency of the recovery process. This intelligent control not only improves production efficiency, but also reduces the complexity and error rate of manual operations.

[0024] Furthermore, the recovery component also includes a secondary recovery tank and a tertiary recovery tank. A first power component is installed between the secondary recovery tank and the primary recovery tank, and a second power component is installed between the tertiary recovery tank and the primary recovery tank. The first power component and the second power component have the same structure. The first power component includes a circulation pump. The input end of the circulation pump is connected to the primary recovery tank, and the output end of the circulation pump is connected to a second recovery pipe. The second recovery pipe is connected to the secondary recovery tank at one end away from the circulation pump. The second recovery pipe has the same structure as the first recovery pipe. The circulation pump is connected to the control component signal, and the control component controls the opening and closing of the circulation pump.

[0025] Beneficial effects: Multi-stage recovery improves recovery efficiency: By setting up multi-stage recovery tanks (primary, secondary and tertiary), harmful gases can be recovered and processed more thoroughly and efficiently. Each level of recovery tank can further absorb or react harmful substances in the gas, making the final emitted gas cleaner and harmless. This multi-stage recovery mechanism significantly improves recovery efficiency and reduces environmental pollution. The synergy of multi-stage recovery tanks and power components further enhances the safety of the recycling process. Even if a recovery tank at a certain level fails or has insufficient processing capacity, subsequent recovery tanks can continue to work to ensure that harmful gases are not directly discharged into the environment. At the same time, the automated operation of the power component reduces the need for manual intervention and reduces the risk of human error.

[0026] Furthermore, the monitoring component includes a temperature sensor, a pH sensor, a pressure sensor, a flow sensor and a dissolved oxygen sensor. All sensors are connected to the control component signal. The control component is used to control the power and opening and closing of the heating component according to the real-time temperature inside the kettle body monitored by the temperature sensor; to control the power and opening and closing of the oxygen supply component according to the real-time concentration of dissolved oxygen in the solution in the kettle body monitored by the dissolved oxygen sensor; and to control the opening and closing of the one-way valve according to the pH value and flow data monitored by the pH sensor and the flow sensor.

[0027] Beneficial effects: The temperature sensor can monitor the real-time temperature inside the kettle body in real time and feed the data back to the control component. The control component accurately controls the power and opening and closing of the heating component based on these data to ensure that the reaction is carried out within the optimal temperature range, thereby improving the reaction efficiency and product quality. The dissolved oxygen sensor can accurately measure the real-time concentration of dissolved oxygen in the solution in the kettle body. The control component controls the power and opening and closing of the oxygen supply component based on these data to ensure that the dissolved oxygen content in the solution is maintained at an appropriate level to support the smooth progress of the aerobic reaction. This helps to avoid incomplete reactions caused by insufficient oxygen or waste and safety hazards caused by excess oxygen. The pH sensor can monitor the pH of the solution in real time, which is crucial for controlling the reaction rate and product quality. At the same time, the flow sensor can monitor the flow of liquid in and out of the reactor and provide the control component with real-time information about the flow state of the solution. The control component controls the opening and closing of the one-way valve based on the data of the pH sensor and the flow sensor, which can accurately adjust the pH and flow of the solution to ensure that the reaction is carried out under optimal conditions. The pressure sensor can monitor the pressure changes inside the reactor to prevent safety accidents caused by abnormal pressure. When the pressure exceeds the safety range, the control component can automatically take measures (such as shutting down the heating component, opening the pressure relief valve, etc.) to reduce the pressure and ensure the safety of the production process.

[0028] Furthermore, feedback components are installed in the first-level recovery tank, the second-level recovery tank and the third-level recovery tank. The feedback components include a liquid level sensor and a concentration sensor. The liquid level sensor and the concentration sensor are both connected to the control component signal. The control component controls the opening and closing and power of the circulation pump according to the liquid level height of the liquid level sensor and the concentration sensor and the concentration monitoring data.

[0029] Beneficial effects: The liquid level sensor can monitor the liquid level in each recovery tank in real time and feed the data back to the control component. The control component accurately controls the opening and closing of the circulation pump according to the liquid level data to ensure that the liquid level in the recovery tank is kept within a safe and reasonable range. This not only avoids the risk of overflow caused by too high a liquid level, but also prevents the problem of affecting the recovery efficiency due to too low a liquid level. The concentration sensor can accurately measure the concentration of the recovered liquid in the recovery tank and provide the control component with real-time information about the quality of the recovered liquid. The control component dynamically adjusts the power of the circulation pump according to the concentration data to optimize the concentration of the recovered liquid. When the concentration of the recovered liquid is too high, the power of the circulation pump can be increased to promote full contact and reaction between the gas and the recovered liquid; when the concentration of the recovered liquid is too low, the power of the circulation pump can be reduced to save energy. Through real-time monitoring and intelligent control, the feedback component can ensure that the liquid level and concentration in the recovery tank are always kept in the best state, thereby improving the recovery efficiency. This not only helps to reduce the emission of harmful gases, but also improves the quality and reuse value of the recovered liquid.

[0030] Furthermore, it also includes an early warning component. When the monitoring data of the monitoring component and the feedback component exceed the preset data in the control component, the control component activates the early warning component to remind the user.

[0031] Beneficial effects: By comparing real-time monitoring data with preset data, the early warning component can detect potential equipment failures or abnormal operations at the first time. This immediate early warning mechanism helps users take quick measures to solve problems and avoid the expansion of failures or more serious consequences. The introduction of early warning components further enhances the safety of the production process. When key parameters such as temperature, pressure, liquid level, and concentration are monitored to exceed the safety range, the early warning component will immediately sound an alarm to remind users to pay attention and take corresponding measures. This helps prevent safety accidents caused by equipment failure or improper operation.

[0032] Furthermore, a liquid inlet assembly is installed at the liquid inlet, and the liquid inlet assembly includes a shell, the bottom of the shell is fixedly connected to the liquid inlet, a circular hole is opened at the center of the bottom of the shell, a connecting rod is slidably engaged with the circular hole, the connecting rod is a spiral structure, a circular ring is rotatably engaged with the bottom of the shell, a plurality of fan blades are fixedly connected inside the circular ring, the circular ring is rotatably engaged with the connecting rod, a cover body is fixedly connected to the end of the connecting rod away from the circular ring, and the cover body and the top of the shell are threadedly connected.

[0033] Beneficial effects: The friction between the spiral connecting rod and the inner wall of the circular hole drives the ring and the fan blades to rotate, forming a rotating airflow or liquid flow. This mechanism ensures that the catalyst can be evenly dispersed and accurately sprinkled on the surface of the solution in the reactor during the dosing process. This precise dosing method helps to improve reaction efficiency and product quality. It also enhances the mixing effect of the catalyst and the solution, which helps the catalyst to dissolve or disperse in the solution more quickly, thereby accelerating the reaction process and increasing the reaction rate and yield. The cover body is threadedly connected to the top of the shell to ensure the sealing after the dosing is completed. This design effectively prevents external air or impurities from entering the reactor, ensuring the purity and stability of the reaction environment.

[0034] Furthermore, a plurality of locking components are installed between the kettle body and the kettle cover. The locking components include lock buckles, which are fixedly connected to the kettle body and the kettle cover respectively. Screws are inserted into the lock buckles, and the lock buckles cooperate with the screw threads.

[0035] Beneficial effects: The locking assembly achieves a tight seal between the kettle cover and the kettle body through the fixed connection of the lock buckle with the kettle body and the kettle cover, and the threaded cooperation of the screw and the lock buckle. This sealing method effectively prevents material leakage during the reaction process and ensures the stability and safety of the reaction environment. The design of the locking assembly allows the kettle cover to be easily opened or closed when necessary. This is convenient for users to perform daily maintenance and overhaul of the equipment. At the same time, it is also convenient for users to observe and sample the inside of the reactor when necessary. Tight sealing not only prevents material leakage, but also ensures the stability of the internal environment of the reactor. This helps the reactants to fully react at the set temperature and pressure, and improves the reaction efficiency and yield. At the same time, it also reduces the risk of reaction interruption or safety accidents caused by material leakage.

[0036] Furthermore, a visual observation window is installed on the side wall of the kettle body for the operator to observe the internal reaction conditions without opening the kettle cover.

[0037] Beneficial effects: Through the visual observation window, operators can monitor the reaction conditions inside the reactor in real time without being directly exposed to high temperature, high pressure or corrosive environment. This greatly reduces the risk of safety accidents that may be caused by frequently opening the reactor cover, such as splashing of high-temperature materials and leakage of toxic gases. Frequent opening and closing of the reactor cover may destroy the temperature and pressure balance inside the reactor and the mixing state of the reactants, thereby affecting the stability and efficiency of the reaction. The visual observation window allows operators to observe without interfering with the reaction process, ensuring the continuity and stability of the reaction.

[0038] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is an isometric view of an embodiment of a ferric chloride solution impurity removal pretreatment device of the present invention;

[0040] Figure 2 A cross-sectional view of an embodiment of a ferric chloride solution impurity removal pretreatment device of the present invention;

[0041] Figure 3 It is an overall isometric view of Embodiment 3 of the ferric chloride solution impurity removal pretreatment device of the present invention;

[0042] Figure 4 It is a partial cross-sectional view of an embodiment of a ferric chloride solution impurity removal pretreatment device of the present invention;

[0043] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0044] Figure 6 It is a framework diagram of an embodiment of a ferric chloride solution impurity removal pretreatment device of the present invention;

[0045] Figure 7 It is an overall isometric view of Example 7 of the ferric chloride solution impurity removal pretreatment device of the present invention.

[0046] The figure marks in the drawings of the specification include: 1. kettle body; 2. kettle cover; 3. motor; 4. oxygen supply assembly; 5. stirring shaft; 6. stirring rod; 7. air outlet; 8. first recovery pipe; 9. primary recovery tank; 10. cooler; 11. electric nozzle; 12. secondary recovery tank; 13. first power assembly; 14. second recovery pipe; 15. tertiary recovery tank; 16. second power assembly; 17. third recovery pipe; 18. shell; 19. connecting rod; 20. ring; 21. fan blade; 22. cover; 101. liquid inlet; 102. heating assembly; 501. collection port; 502. collection box. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The following is further described in detail through specific implementation methods:

[0051] Embodiment 1:

[0052] As attached Figure 1 and Figure 2 As shown: A ferric chloride solution impurity removal pretreatment device, including a reactor for removing impurities from ferric chloride solution, the reactor including a reactor body 1 and a reactor cover 2, the reactor cover 2 is provided with a liquid inlet 101, the reactor body 1 is provided with an exhaust port and a liquid outlet, and the side wall of the reactor body 1 is provided with a visual observation window for an operator to observe the internal reaction situation without opening the reactor cover 2. In this embodiment, the visual observation window is made of high temperature resistant glass to improve the convenience and safety of operation. A heating component 102 is installed at the bottom of the reactor body 1. In this embodiment, the heating component 102 is an electric heating wire. A plurality of locking components are installed between the reactor body 1 and the reactor cover 2. The locking component includes a lock buckle, which is fixedly connected to the reactor body 1 and the reactor cover 2 respectively, and a screw is inserted into the lock buckle, and the lock buckle cooperates with the screw thread.

[0053] It also includes a stirring component, a monitoring component and a control component. The stirring component is installed on the bottom wall of the kettle cover 2. The stirring component is used to stir and mix the ferric chloride solution in the kettle body 1 when removing impurities. The exhaust port of the kettle body 1 is installed with a recovery component for recovering the gas generated during the impurity removal process of the ferric chloride solution; the recovery component includes a first recovery pipe 8, one end of the first recovery pipe 8 is connected to the exhaust port, and the other end of the first recovery pipe 8 is installed with a primary recovery tank 9, and the first recovery tank 9 is filled with recovery liquid. In this embodiment, the recovery liquid is water. The end of the first recovery pipe 8 away from the exhaust port passes through the primary recovery tank 9 and extends to the inside of the primary recovery tank 9. The pipe mouth height of the first recovery pipe 8 is lower than the liquid level height of the recovery liquid in the primary recovery tank 9.

[0054] The stirring assembly includes a driving member. In this embodiment, the driving member is a motor 3, which is fixedly connected to the bottom wall of the kettle cover 2. The output shaft of the driving member is coaxially fixedly connected with an oxygen supply assembly 4 for providing oxygen. A stirring shaft 5 is installed at the output end of the oxygen supply assembly 4. The stirring shaft 5 is a hollow structure. The stirring shaft 5 is connected to the output end of the oxygen supply assembly 4. A plurality of stirring rods 6 are fixedly connected to the stirring shaft 5. The stirring rods 6 are all hollow structures. The stirring rods 6 are connected to the stirring shaft 5. Air outlet holes 7 are provided on the top of the stirring shaft 5 and the stirring rods 6.

[0055] The monitoring component is used to monitor the reaction data inside the kettle body 1 in real time when the ferric chloride solution is removed from impurities and transmit the real-time monitoring data to the control component. The monitoring component includes a temperature sensor, a pH sensor, a pressure sensor, a flow sensor and a dissolved oxygen sensor. All sensors are connected to the control component signal. The control component controls the power and opening and closing of the heating component 102 according to the real-time temperature inside the kettle body 1 monitored by the temperature sensor; controls the power and opening and closing of the oxygen supply component 4 according to the real-time concentration of dissolved oxygen in the solution in the kettle body 1 monitored by the dissolved oxygen sensor; and controls the opening and closing of the one-way valve according to the pH value and flow data monitored by the pH sensor and the flow sensor.

[0056] The specific implementation process is as follows: open the kettle cover 2 of the reactor, inject the ferric chloride solution to be removed into the kettle body 1, quickly tighten the screw in the locking assembly, and tightly fix the kettle cover 2 to the kettle body 1 to ensure good sealing to prevent leakage during the reaction. Add an appropriate amount of catalyst to the ferric chloride solution in the kettle body 1 through the liquid inlet 101, and immediately close the liquid inlet 101 after adding to prevent external impurities from entering.

[0057] The temperature, pH value, dissolved oxygen concentration and other parameter ranges required for the iron chloride solution to remove impurities are set in the control component in advance, and the heating component 102 is started by the control component to heat the iron chloride solution in the reactor to reach the preset reaction temperature. Then the control component starts the oxygen supply component 4, and oxygen is transported into the reactor through the connected stirring shaft 5 and stirring rod 6. Because the stirring shaft 5 and stirring rod 6 both extend into the iron chloride solution to be removed impurities in the reactor, when oxygen enters the stirring shaft 5 through the oxygen supply component 4, it will flow along the hollow structure of the stirring shaft 5 and stirring rod 6, and be uniformly released into the iron chloride solution in the reactor through the air outlet 7 provided on the stirring shaft 5 and stirring rod 6, so that oxygen can be fully mixed with the solution, and the reaction efficiency is effectively improved.

[0058] The control component starts the motor 3, the motor 3 drives the stirring shaft 5, and the stirring shaft 5 drives the stirring rod 6 to rotate, so as to stir and mix the solution, oxygen and catalyst. Since the stirring rod 6 is also a hollow structure and is connected to the stirring shaft 5, the dispersion and dissolution of oxygen in the solution can be promoted during the rotation process. The role of this preliminary mixing is crucial to improving the reaction efficiency. It ensures that oxygen can be quickly and evenly distributed in the ferric chloride solution, thereby increasing the contact opportunities between oxygen and impurities in the solution and accelerating the oxidation reaction or other chemical reactions. In addition, the stirring action also helps to break the local concentration gradient in the solution, improve the mass transfer efficiency, and further promote the reaction.

[0059] When the oxygen supply reaches the preset conditions in the control component, the control component will promptly cut off the oxygen supply of the oxygen supply component 4 to prevent excessive or wasted oxygen.

[0060] The rotation of the stirring shaft 5 and the stirring rod 6 causes a change in the speed of the surrounding fluid. Near the stirring shaft 5 and the stirring rod 6, the speed of the fluid is faster, while in the area away from these components, the speed of the fluid is slower. This speed difference (i.e., hysteresis difference) causes a change in the internal pressure of the fluid. According to Bernoulli's principle, the pressure is low where the flow rate is fast, and the pressure is high where the flow rate is slow. Therefore, a low-pressure area is formed in the high-speed fluid area near the stirring shaft 5 and the stirring rod 6, and a high-pressure area is formed in the low-speed fluid area away from these components. Due to the existence of the pressure difference, the oxygen in the high-pressure area (including the oxygen dissolved in the solution and the gaseous oxygen that is not completely dissolved) will flow to the low-pressure area. That is, the reason why oxygen is sucked into the stirring shaft 5, the oxygen enters the stirring shaft 5 through the air outlet 7 at the top of the stirring shaft 5, and also because of the rotational motion, the inhaled oxygen is transported to the solution again from the hollow structure and the air outlet 7 of the stirring shaft 5 and the stirring rod 6, forming a closed-loop gas circulation system to achieve the redistribution and recycling of oxygen.

[0061] The temperature sensor, pH sensor, flow sensor and dissolved oxygen sensor in the monitoring component monitor the reaction data inside the kettle body 1 in real time and transmit the data to the control component. When the temperature reaches the preset value of the control component, the control component will automatically adjust the power of the heating component 102 or turn off the heating; when the dissolved oxygen concentration is lower than the preset value, the oxygen supply of the oxygen supply component 4 will be increased.

[0062] The gas (such as hydrogen chloride, etc.) generated during the impurity removal process of the ferric chloride solution enters the first recovery pipe 8 through the exhaust port. When the gas enters the primary recovery tank 9 through the recovery pipe, it will first contact the liquid seal layer. Due to the solubility and diffusivity of the gas, these harmful gases will be quickly captured and dissolved by the recovery liquid below. The chemical components in the recovery liquid react with the harmful gases, further promoting their dissolution or conversion into harmless substances. Through the action of the liquid seal and the recovery liquid, the primary recovery tank 9 can effectively capture and process the harmful gases generated during the impurity removal process of the ferric chloride solution, preventing them from being directly discharged into the atmosphere to cause pollution. This treatment method not only meets environmental protection requirements, but also helps to improve resource utilization and reduce production costs.

[0063] When the impurity removal process of the ferric chloride solution is completed, first turn off the power equipment such as the heating component 102 and the stirring component. Then close the exhaust port to ensure that the reactor is in a sealed state. Open the liquid outlet to discharge the ferric chloride solution out of the reactor.

[0064] Embodiment 2:

[0065] The difference from Example 1 is that a cooler 10 is installed on the first recovery pipe 8, a one-way valve is installed at one end of the first recovery pipe 8 connected to the exhaust port, an electric nozzle 11 is installed at one end of the first recovery pipe 8 connected to the first-level recovery tank 9, the cooler 10, the one-way valve and the electric nozzle 11 are all connected to the control component signal, and the control component controls the opening and closing of the cooler 10, the one-way valve and the electric nozzle 11 according to the real-time monitoring data of the monitoring component.

[0066] The specific implementation process is as follows: when the pressure sensor in the monitoring component detects that the pressure in the reactor reaches a certain threshold, the one-way valve automatically opens to allow harmful gases to flow to the first recovery pipe 8 to prevent gas backflow. The control component adjusts the cooling intensity of the cooler 10 in a timely manner according to the real-time monitoring data to ensure that the harmful gases maintain a low temperature when passing through the recovery pipe.

[0067] Before the harmful gas enters the primary recovery tank 9, the control component starts the electric nozzle 11 as needed. The electric nozzle 11 sprays the harmful gas in the recovery liquid in the form of mist, forming a large amount of gas-liquid contact surface to promote the dissolution and absorption of the gas. When the electric nozzle 11 starts working, the harmful gas will be sprayed into the recovery liquid in the form of mist. In this process, the gas expands and sprays rapidly from the first recovery pipe 8, causing the gas density and pressure in the area to drop rapidly. Due to the continuity principle of fluid dynamics, this pressure drop will propagate along the first recovery pipe 8 toward the reactor, thereby forming a negative pressure area in the first recovery pipe 8. The negative pressure effect will form a pressure gradient between the first recovery pipe 8 and the reactor, and this gradient will push the harmful gas in the reactor to flow to the first recovery pipe 8 faster. This acceleration effect helps to reduce the residence time of harmful gases in the reactor and reduce its impact on the reaction process and the environment.

[0068] Embodiment 3:

[0069] Combined with the attached Figure 3 As shown, the difference from Example 2 is that the recovery component also includes a secondary recovery tank 12 and a tertiary recovery tank 15, a first power component 13 is installed between the secondary recovery tank 12 and the primary recovery tank 9, a second power component 16 is installed between the tertiary recovery tank 15 and the primary recovery tank 9, the first power component 13 and the second power component 16 have the same structure, the first power component 13 includes a circulation pump, the input end of the circulation pump is connected to the primary recovery tank 9, the output end of the circulation pump is connected to the second recovery pipe 14, the second recovery pipe 14 is connected to the secondary recovery tank 12 at one end away from the circulation pump, the second recovery pipe 14 has the same structure as the first recovery pipe 8, the circulation pump is connected to the control component signal, and the control component controls the opening and closing of the circulation pump.

[0070] The specific implementation process is as follows: In the first-level recovery tank 9, as the gas continues to enter and be processed, the gas concentration in the tank gradually decreases, and the treatment effect gradually reaches the preset threshold. At this time, it is necessary to evaluate whether the remaining gas needs to be transferred to the next level for treatment, or whether the operating parameters in the first-level recovery tank 9 need to be adjusted to further improve the treatment efficiency. When the control component detects that the treatment effect in the first-level recovery tank 9 reaches the transfer condition, it will send a signal to start the circulation pump in the first power component 13. The circulation pump starts working, extracts the remaining untreated or incompletely treated gas in the first-level recovery tank 9 through the second recovery pipe 14, and transports it to the second-level recovery tank 12. During the transportation process, the control component can adjust the speed and flow of the circulation pump as needed to optimize the gas transportation efficiency and effect. For example, when the gas concentration is high, increase the speed and flow to speed up the transfer speed; when the gas concentration is low, reduce the speed and flow to reduce energy consumption and wear.

[0071] The gas entering the secondary recovery tank 12 continues to receive further treatment, and the secondary recovery tank 12 adopts the same treatment mechanism as the primary recovery tank 9. Like the primary recovery tank 9, the secondary recovery tank 12 will also gradually reduce the gas concentration during the treatment process, and consider transferring the remaining gas to the tertiary recovery tank 15 when the preset threshold is reached. When the treatment effect in the secondary recovery tank 12 reaches the transfer condition, the circulation pump in the second power assembly 16 will be started to transport the remaining untreated or incompletely treated gas in the secondary recovery tank 12 to the tertiary recovery tank 15 through the third recovery pipe 17. Through the coordinated work of the multi-stage recovery tank and the power assembly, harmful gases can be effectively treated and their purification efficiency can be gradually improved.

[0072] Embodiment 4:

[0073] Combined with the attached Figure 6 As shown, the difference from Example 3 is that feedback components are installed in the first-level recovery tank 9, the second-level recovery tank 12 and the third-level recovery tank 15, and the feedback components include a liquid level sensor and a concentration sensor. The liquid level sensor and the concentration sensor are both connected to the control component signal. The control component controls the opening and closing and power of the circulation pump according to the liquid level height of the liquid level sensor and the concentration sensor and the concentration monitoring data.

[0074] The specific implementation process is as follows: The liquid level sensors in the primary recovery tank 9, the secondary recovery tank 12 and the tertiary recovery tank 15 detect the liquid level height in the tank in real time. Liquid level data is crucial to ensure the adequacy of the recovered liquid in the tank, and to avoid the treatment efficiency being reduced or the equipment being damaged due to the low liquid level. The concentration sensor is used to monitor the concentration of harmful components in the gas or liquid in the tank. This data directly reflects the treatment effect and is of great significance for evaluating whether further treatment or transfer of gas is required.

[0075] The control component continuously receives real-time monitoring data from the liquid level sensor and the concentration sensor, and analyzes and processes these data. Through a preset algorithm or logical judgment, the control component can identify the current processing status and potential needs. When the liquid level sensor detects that the liquid level of a recovery tank is lower than the preset threshold, the control component will send a signal to suspend or adjust the operation of the circulation pump to avoid continuing to extract gas when the liquid level is too low. When the concentration sensor detects that the concentration of harmful components in the gas or liquid in a recovery tank has dropped below the preset standard, and the subsequent processing capacity of the tank is close to saturation, the control component will send a signal to start the corresponding circulation pump to transfer the remaining gas to the next-level recovery tank 9 for further processing.

[0076] According to the data from the concentration sensor, the control component can also dynamically adjust the power (i.e., speed and flow) of the circulation pump. For example, when the gas concentration is high, the power of the circulation pump is increased to speed up the gas transfer; when the gas concentration is low, the power is reduced to reduce energy consumption and wear.

[0077] Embodiment 5:

[0078] The difference from Example 4 is that it also includes an early warning component. In this embodiment, the early warning component is a buzzer and an indicator light. When the real-time monitoring data of the monitoring component and the feedback component exceeds the preset data in the control component, the control component activates the early warning component to remind the user.

[0079] The specific implementation process is as follows: The buzzer is used as an audio warning device. When triggered, the buzzer can emit a harsh sound to attract the operator's attention. The indicator light conveys different warning messages by changing color or flashing mode. For example, red light can be used to indicate a serious warning, yellow light to indicate a caution or warning, and green light to indicate a normal state.

[0080] After receiving the monitoring data and feedback data, the control component will immediately compare them with the preset safety thresholds or operating parameters. These preset data are set according to system design requirements, safety specifications and actual operating experience, and are used to determine whether the current system status is normal. When any of the monitoring data (such as excessively high gas concentration, abnormal pressure, etc.) or feedback data (such as too low liquid level, concentration not meeting the standard, etc.) exceeds the preset data in the control component, it is considered that there is a potential risk or abnormality in the current state. For example, if the liquid level is too low or the gas concentration is too high and continues to rise, etc.

[0081] Once it is determined that a warning is required, the control component immediately sends a signal to the early warning component. The buzzer starts to sound, and the indicator light turns on or changes color / flashing mode to clearly convey the warning message to the user. After hearing the buzzer sound or seeing the indicator light change, the operator will immediately realize that there is a problem with the system and go to check it out. The combined use of the buzzer and indicator light provides dual warnings of sound and vision, ensuring effective communication of information.

[0082] Embodiment 6:

[0083] As attached Figure 4 and Figure 5As shown, the difference from Example 5 is that a liquid inlet assembly is installed at the liquid inlet 101, and the liquid inlet assembly includes a shell 18. The bottom of the shell 18 is fixedly connected to the liquid inlet 101. A circular hole is opened in the center of the bottom of the shell 18, and a connecting rod 19 is slidably engaged with the circular hole. The connecting rod 19 is a spiral structure, and a circular ring 20 is rotatably engaged at the bottom of the shell 18. A plurality of fan blades 21 are fixedly connected in the circular ring 20. The circular ring 20 is rotatably engaged with the connecting rod 19, and the connecting rod 19 is fixedly connected to a cover body 22 at one end away from the circular ring 20. The cover body 22 and the top of the shell 18 are threadedly connected.

[0084] The specific implementation process is as follows: When adding catalyst to the reactor, the catalyst is added to the shell 18 of the feed assembly. Hold the cover 22 and press it down gently. During the pressing process, the cover 22 will drive the connecting rod 19 to descend together. Since the connecting rod 19 is designed as a spiral structure, when the connecting rod 19 slides in the circular hole, its spiral surface will generate friction with the inner wall of the circular hole, thereby driving the circular ring 20 that rotates with it to start rotating. The rotation of the circular ring 20 further drives the internal fixedly connected fan blades 21 to rotate synchronously, forming a rotating airflow or liquid flow. As the connecting rod 19 continues to descend, the catalyst in the shell 18 begins to gradually flow out through the gap between the connecting rod 19 and the circular hole and enter the reactor. At the same time, due to the rotation of the circular ring 20 and the fan blades 21, the catalyst is evenly sprinkled on the surface of the solution in the reactor, realizing the precise delivery and effective dispersion of the catalyst. When the catalyst is delivered, stop pressing the cover 22, and seal it tightly with the shell 18 through a threaded connection to prevent external air or impurities from entering.

[0085] Embodiment 7:

[0086] Combined with the attached Figure 7 As shown, the difference from Example 6 is that a collecting box 502 is installed at one end of the stirring shaft 5 away from the output end of the oxygen supply assembly 4, and a collecting port 501 is opened at the lower part of the stirring shaft 5.

[0087] The rotation of the stirring shaft 5 and the stirring rod 6 not only promotes the mixing of the solution, but also causes the change of the internal pressure of the fluid through the speed difference (hysteresis difference), forming a low-pressure area and a high-pressure area. This pressure difference not only affects the flow of oxygen, as described in the previous embodiment, but also further affects the movement of impurities in the solution.

[0088] When the stirring shaft 5 and the stirring rod 6 rotate, the high-speed fluid area near them forms a low-pressure area, while the low-speed fluid area away from these components forms a high-pressure area. Due to this pressure difference, the impurities in the solution (these impurities may be different from the main solution due to density, size or chemical properties) will be affected by force and move from the high-pressure area to the low-pressure area. When these impurities move to the vicinity of the collecting port 501 at the bottom of the stirring shaft 5, due to the design of the collecting port 501, the impurities will be more easily separated from the solution and fall into the collecting box 502 installed at the end of the stirring shaft 5 away from the output end of the oxygen supply component 4. In this way, the automatic collection and separation of impurities in the solution is achieved through the rotation of the stirring shaft 5 and the resulting pressure difference. This method of collecting and separating impurities in the solution using speed difference (hysteresis difference) and pressure change not only improves the efficiency of the stirring process, but also simplifies the impurity processing steps. At the same time, since this method does not rely on additional filtering or centrifugal equipment, it also reduces the complexity and operating cost of the equipment.

[0089] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A ferric chloride solution impurity removal pretreatment device, comprising a reactor for removing impurities from a ferric chloride solution, the reactor comprising a reactor body (1) and a reactor cover (2), the reactor cover (2) being provided with a liquid inlet (101), the reactor body (1) being provided with an exhaust port and a liquid outlet, a heating component (102) being installed at the bottom of the reactor body (1), characterized in that: The invention comprises a stirring component, a monitoring component and a control component. The stirring component is installed on the bottom wall of the kettle cover (2). The stirring component is used to stir and mix the ferric chloride solution in the kettle body (1) when removing impurities. The exhaust port of the kettle body (1) is installed with a recovery component for recovering the gas generated in the process of removing impurities from the ferric chloride solution. The stirring assembly comprises a driving member, the driving member is fixedly connected to the bottom wall of the kettle cover (2), the output shaft of the driving member is coaxially fixedly connected to an oxygen supply assembly (4) for providing oxygen, the output end of the oxygen supply assembly (4) is equipped with a stirring shaft (5), the stirring shaft (5) is a hollow structure, the stirring shaft (5) is connected to the output end of the oxygen supply assembly (4), a plurality of stirring rods (6) are fixedly connected to the stirring shaft (5), the stirring rods (6) are all hollow structures, the stirring rods (6) are connected to the stirring shaft (5), and air outlet holes (7) are provided on the top of the stirring shaft (5) and the stirring rods (6); The monitoring component is used to monitor the reaction data inside the kettle body (1) in real time when the ferric chloride solution is impurity-removed and transmit the real-time monitoring data to the control component. The control component is used to start and close the driving parts in the heating component (102) and the stirring component and control the power according to the monitoring data of the monitoring component. At the same time, the control component is also used to start and close the recovery component and the oxygen supply component (4) according to the monitoring data.

2. The ferric chloride solution impurity removal pretreatment device according to claim 1, characterized in that: The recovery component comprises a first recovery pipe (8), one end of the first recovery pipe (8) is connected to the exhaust port, the other end of the first recovery pipe (8) is provided with a primary recovery tank (9), the first recovery tank (9) is filled with recovery liquid, the end of the first recovery pipe (8) away from the exhaust port passes through the primary recovery tank (9) and extends to the inside of the primary recovery tank (9), and the height of the pipe mouth of the first recovery pipe (8) is lower than the liquid level of the recovery liquid in the primary recovery tank (9).

3. The ferric chloride solution impurity removal pretreatment device according to claim 2, characterized in that: A cooler (10) is installed on the first recovery pipe (8); a one-way valve is installed at one end of the first recovery pipe (8) that is connected to the exhaust port; an electric spray head (11) is installed at one end of the first recovery pipe (8) that is connected to the primary recovery tank (9); the cooler (10), the one-way valve and the electric spray head (11) are all connected to the control component signal; the control component controls the opening and closing of the cooler (10), the one-way valve and the electric spray head (11) according to the real-time monitoring data of the monitoring component.

4. The ferric chloride solution impurity removal pretreatment device according to claim 3, characterized in that: The recovery component also includes a secondary recovery tank (12) and a tertiary recovery tank (15). A first power component (13) is installed between the secondary recovery tank (12) and the primary recovery tank (9). A second power component (16) is installed between the tertiary recovery tank (15) and the primary recovery tank (9). The first power component (13) and the second power component (16) have the same structure. The first power component (13) includes a circulation pump. The input end of the circulation pump is connected to the primary recovery tank (9). The output end of the circulation pump is connected to a second recovery pipe (14). The second recovery pipe (14) is connected to the secondary recovery tank (12) at one end away from the circulation pump. The second recovery pipe (14) has the same structure as the first recovery pipe (8). The circulation pump is connected to the control component by signal. The control component controls the opening and closing of the circulation pump.

5. The ferric chloride solution impurity removal pretreatment device according to claim 4, characterized in that: The monitoring component comprises a temperature sensor, a pH sensor, a pressure sensor, a flow sensor and a dissolved oxygen sensor. All sensors are connected to the control component signal. The control component is used to control the power and opening and closing of the heating component (102) according to the real-time temperature inside the kettle (1) monitored by the temperature sensor; to control the power and opening and closing of the oxygen supply component (4) according to the real-time concentration of dissolved oxygen in the solution in the kettle (1) monitored by the dissolved oxygen sensor; and to control the opening and closing of the one-way valve according to the pH value and flow data monitored by the pH sensor and the flow sensor.

6. The ferric chloride solution impurity removal pretreatment device according to claim 5, characterized in that: Feedback components are installed in the first-stage recovery tank (9), the second-stage recovery tank (12) and the third-stage recovery tank (15). The feedback components include a liquid level sensor and a concentration sensor. The liquid level sensor and the concentration sensor are both connected to the control component signal. The control component controls the opening and closing and power of the circulation pump according to the liquid level height of the liquid level sensor and the concentration sensor and the concentration monitoring data.

7. The ferric chloride solution impurity removal pretreatment device according to claim 6, characterized in that: It also includes an early warning component. When the monitoring data of the monitoring component and the feedback component exceed the preset data in the control component, the control component activates the early warning component to remind the user.

8. The ferric chloride solution impurity removal pretreatment device according to claim 7, characterized in that: A liquid inlet assembly is installed at the liquid inlet (101), and the liquid inlet assembly comprises a shell (18). The bottom of the shell (18) is fixedly connected to the liquid inlet (101). A circular hole is opened at the center of the bottom of the shell (18). A connecting rod (19) is slidably engaged with the circular hole. The connecting rod (19) is a spiral structure. A circular ring (20) is rotatably engaged at the bottom of the shell (18). A plurality of fan blades (21) are fixedly connected inside the circular ring (20). The circular ring (20) is rotatably engaged with the connecting rod (19). A cover body (22) is fixedly connected to the end of the connecting rod (19) away from the circular ring (20). The cover body (22) and the top of the shell (18) are threadedly connected.

9. The ferric chloride solution impurity removal pretreatment device according to claim 8, characterized in that: A plurality of locking components are installed between the kettle body (1) and the kettle cover (2), and the locking components include lock buckles, which are fixedly connected to the kettle body (1) and the kettle cover (2) respectively, and screw rods are inserted into the lock buckles, and the lock buckles are threadably matched with the screw rods.

10. The ferric chloride solution impurity removal pretreatment device according to claim 9, characterized in that: The side wall of the kettle body (1) is provided with a visual observation window for an operator to observe the internal reaction conditions without opening the kettle cover (2).

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