Nanometer coating modification device

Abstract

The invention provides a nanometer coating modification device, and relates to the technical field of electrochemical energy storage material preparation equipment.The nanometer coating modification device comprises a reaction kettle, the reaction kettle comprises a reaction cavity and a static mixer, and the reaction cavity comprises a stabilizing section, a conical accelerating section and a pushing section which are sequentially communicated in the axial direction of the reaction cavity; the stabilizing section is used for providing an initial mixing space for mixing matrix particles and a nano coating material to form a first mixed material, and the inner diameter of the end, facing the stabilizing section, of the conical acceleration section is gradually reduced from the inner diameter of the end, facing the pushing section, of the conical acceleration section; the static mixer comprises a separation structure, the separation structure is embedded between the two axial ends of the conical acceleration section, a plurality of separation meshes distributed in an array mode are formed in the separation structure, and the separation structure is used for cutting the first mixed materials into second mixed materials smaller in size through the separation meshes. According to the invention, the coating consistency and modification stability of the nano coating material on the outer layer of the matrix particle can be improved.

Description

Technical Field

[0001] This invention relates to the field of electrochemical energy storage material preparation equipment technology, and more specifically, to a nano-coating modification device. Background Technology

[0002] In the field of lithium-ion battery cathode materials, matrix particles such as lithium iron phosphate are widely used due to their high safety, long cycle life, and cost advantages. To further improve its conductivity and rate performance, nano-coating technology is typically used in reactors based on nano-coating modification devices to coat the surface of lithium iron phosphate with nano-coating materials to form a nanoscale coating layer.

[0003] In related technologies, the reactor includes a shell, stirring blades, and a stirring motor. The shell is provided with a carrier gas inlet for the entry of mixed gas (such as nitrogen, argon, or other inert gases), a first feed inlet for the entry of matrix particles, and a second feed inlet for the entry of nano-coating materials. The stirring blades are installed inside the shell, and the stirring motor is located outside the shell and is driven and connected to the stirring blades to drive the stirring blades to rotate at high speed, so as to mix the nano-coating materials and matrix particles entering the shell by stirring.

[0004] However, the flow rate of matrix particles near the inner peripheral wall and other areas inside the shell is slow, forming a "mixing dead zone". The matrix particles in this "mixing dead zone" cannot be fully mixed with the nano-coating material, resulting in uneven coating thickness of the matrix particles, which affects the coating consistency and modification stability of the nano-coating material on the outer layer of the matrix particles. Summary of the Invention

[0005] The problem addressed by this invention is how to improve the coating consistency and modification stability of nano-coated materials on the outer layer of matrix particles.

[0006] To address the above problems, the present invention provides a nano-coating modification device, comprising a reaction vessel, wherein the reaction vessel includes: The reaction chamber includes a stabilizing section, a conical accelerating section, and a pushing section connected sequentially along its axial direction. The stabilizing section is used to provide an initial mixing space for the matrix particles and nano-coating materials to mix and form a first mixture. The inner diameter of the conical accelerating section gradually decreases from the end facing the stabilizing section to the end facing the pushing section. The pushing section is used to temporarily store the second mixture after it has been fully mixed. A static mixer includes a partition structure embedded between the two axial ends of the conical acceleration section. The partition structure has a plurality of partition mesh holes arranged in an array. The partition structure is used to cut the first mixture into a second mixture with a smaller volume through the plurality of partition mesh holes.

[0007] Optionally, the partition structure includes a plurality of grid plates stacked along the axial direction of the reaction chamber, the grid plates having a plurality of holes spaced apart, and the plurality of holes of two adjacent grid plates being intersected to form the partition mesh.

[0008] Optionally, the static mixer further includes a plurality of guide vanes, which are fixedly installed in a ring-shaped interval on the end face of the separation structure facing the stable section.

[0009] Optionally, the conical acceleration section includes a first conical acceleration section and a second conical acceleration section connected sequentially along the axial direction of the reaction chamber. The end of the first conical acceleration section away from the second conical acceleration section is connected to the end of the stabilization section, and the end of the second conical acceleration section away from the first conical acceleration section is connected to the pushing section. The cone angle of the second conical acceleration section is smaller than the cone angle of the first conical acceleration section.

[0010] Optionally, the separation structure is fixed at the connection between the first cone-angle acceleration section and the second cone-angle acceleration section.

[0011] Optionally, the static mixer further includes a conical shroud, which is connected to the outer edge of the end face of the partition structure away from the guide vane; the axial dimensions of the two ends of the conical shroud correspond to the outer diameter of the partition structure and the inner diameter of the end of the second cone-angle acceleration section near the first cone-angle acceleration section, respectively.

[0012] Optionally, the nano-coating modification device further includes a gas supply and processing system, which includes a carrier gas mixing tank, a gas supply pipeline, and a high-speed vortex generator. The carrier gas mixing tank is provided with a first outlet and at least two first inlets, which are used to allow different types of inert gases to enter respectively. One end of the gas supply pipeline is connected to the first outlet of the carrier gas mixing tank, and the other end of the gas supply pipeline is connected to the stabilization section through the high-speed vortex generator, which is used to convert the mixed gas formed by mixing different types of inert gases in the carrier gas mixing tank into a high-speed gas flow and introduce it into the stabilization section.

[0013] Optionally, the gas supply and processing system includes multiple high-speed vortex generators, which are radially spaced around the stable section.

[0014] Optionally, the air supply and processing system further includes a vortex guide structure, which has a spiral groove and is embedded and fixed in the high-speed vortex generator to convert the high-speed airflow into a high-speed rotating airflow.

[0015] Optionally, the gas supply and processing system further includes a gas pressure reducing valve and a mass flow controller. The gas pressure reducing valve and the mass flow controller are respectively connected to the gas supply pipeline. The gas pressure reducing valve is used to reduce the pressure of the high-pressure mixed gas output from the carrier gas mixing tank to a stable pressure gas. The mass flow controller is used to monitor and control the flow rate of the stable pressure gas in the gas supply pipeline.

[0016] Optionally, the nano-coating modification device further includes a material conveying system, which includes a screw feeder, a pneumatic conveyor, and a conveying pipe connected in sequence. The screw feeder is used to hold the matrix particles, and the pneumatic conveyor is connected to the stabilization section through the conveying pipe.

[0017] Optionally, the nano-coating modification device further includes a waste gas treatment and recovery system, which includes a recovery component for recovering the matrix particles and the nano-coating material entrained in the unreacted waste gas generated during the recovery reaction stage in the stabilization section to the screw feeder; the recovery component includes a first exhaust pipe, a recovery container, a recovery pipe, and a discharge valve, the two ends of the first exhaust pipe are respectively connected to the stabilization section and the recovery container, the recovery container is provided with a first outlet, the first outlet of the recovery container is connected to the screw feeder through the recovery pipe, and the discharge valve is connected between the recovery container and the screw feeder.

[0018] Optionally, the waste gas treatment and recovery system further includes an exhaust gas purification component. The recovery container is also provided with a second outlet. The exhaust gas purification component includes a second exhaust pipe, an adsorption structure, and an exhaust gas detection device. The second outlet of the recovery container is connected to the adsorption structure through the second exhaust pipe. The adsorption structure is provided with a third outlet. The exhaust gas detection device is installed at the third outlet of the adsorption structure. The exhaust gas detection device is used to monitor the exhaust gas concentration in the adsorption structure.

[0019] Optionally, the nano-coating modification device further includes a central control cabinet, a power supply device, and a temperature control component. The power supply device is electrically connected to the temperature control component and is used to provide working power to the temperature control component. The temperature control component is in contact with the reaction chamber and is used to adjust the internal temperature of the reaction chamber. The temperature control component includes a heating module, which includes multiple heating coils. The heating coils are respectively installed on the outer peripheral walls of the stabilizing section and the conical acceleration section. The heating coils are electrically connected to the output terminal of the power supply device, and the input terminal of the power supply device is electrically connected to the central control cabinet. The central control cabinet is used to control the heating temperature of the heating coils by adjusting the output power of the power supply device.

[0020] Optionally, the temperature control component further includes a cooling module, which includes a liquid cooling container, an inlet pipe, a return pipe, a water pump, and a jacket. The jacket is fitted onto the heating coil. The jacket has a cavity structure and an inlet and a return port communicating with the cavity structure. The liquid-cooled container is connected to the liquid inlet of the jacket via the liquid inlet pipe, and the liquid return port of the jacket is connected to the liquid-cooled container via the liquid return pipe; the water pump is connected between the liquid-cooled container and the liquid inlet.

[0021] The beneficial effects of the nano-coating modification device of the present invention are: The nano-coating modification device mainly includes a reaction vessel, and may also include a gas supply and processing system, a material conveying system, and an injection system. The reaction vessel includes a reaction chamber and a static mixer. The reaction chamber is a cylindrical structure with a variable diameter. A stabilizing section, a conical acceleration section, and a pushing section are arranged axially along the reaction chamber and connected sequentially. The gas supply and processing system can introduce a mixed gas formed by mixing different types of inert gases into the stabilizing section. The material conveying system can introduce matrix particles into the stabilizing section. The injection system can introduce nano-coating materials into the stabilizing section. The matrix particles and nano-coating materials can undergo initial mixing in the stabilizing section to form a first mixture, ensuring that the airflow and the first mixture maintain a stable flow state before entering the conical acceleration section. Because the inner diameter of the conical acceleration section gradually narrows from the end facing the stabilizing section to the end facing the pushing section, the movement speed of the airflow and the first mixture can be increased through the tapered acceleration section with its narrow cross-section, reducing material retention in the inner peripheral wall area of ​​the reaction chamber, thus laying the foundation for subsequent mixing and coating.

[0022] Because the static mixer's partition structure is embedded in the conical acceleration section, the multiple partition meshes arrayed on the partition structure can not only cut the high-speed moving first mixture passing through it, but also separate the first mixture into a smaller second mixture. This correspondingly improves the uniformity of the mixing and coating of the matrix particles and the nano-coating material, resulting in a more uniform coating layer (i.e., nano-coating material) formed on the outer layer of the matrix particles. Furthermore, the combination of the conical acceleration section and the partition structure eliminates the "mixing dead zone" within the reaction chamber, ensuring that all the first mixture within the conical acceleration section can be forced through the partition meshes, improving the cutting and coating rate of the first mixture. The pushing section can be located on the side of the conical acceleration section away from the stabilizing section and can be used to temporarily store the fully mixed second mixture.

[0023] In short, by using the segmented design of the reaction chamber axis and the combination of the partition structure of the static mixer, the airflow and materials can be accelerated, avoiding the existence of coating dead zones ("mixing dead zones") caused by uneven local flow velocity in the reaction chamber, improving the mixing uniformity of matrix particles and nano-coating materials, thereby improving the coating consistency and modification stability of nano-coating materials on the outer layer of matrix particles. Attached Figure Description

[0024] Figure 1 This is a schematic cross-sectional view of the nano-coating modification device in an embodiment of the present invention; Figure 2 This is one of the structural schematic diagrams of the nano-coating modification device in the embodiments of the present invention; Figure 3 This is a second schematic diagram of the structure of the nano-coating modification device in an embodiment of the present invention; Figure 4 This is a schematic diagram of the high-speed eddy current generator and eddy current guiding structure in an embodiment of the present invention; Figure 5 This is the third schematic diagram of the nano-coating modification device in the embodiments of the present invention.

[0025] Explanation of reference numerals in the attached figures: 1-Frame; 2-Air supply and processing system; 3-Material conveying system; 4-Injection device; 5-Heating coil; 6-Cooling module; 7-Waste gas treatment and recovery system; 8-Central control cabinet; 101-Reaction chamber; 1011-Stabilizing section; 1012-First cone angle acceleration section; 1013-Second cone angle acceleration section; 1014-Pushing section; 102-Discharge valve; 103-Static mixer; 1031-Guide vane; 1032-Separation structure; 033-Conical deflector; 201-Carrier gas mixing tank; 202-Gas supply pipeline; 203-Mass flow controller; 204-Gas pressure reducing valve; 205-Connecting valve; 206-High-speed vortex generator; 207-Vortex guide structure; 301-Screw feeder; 302-Pneumatic conveyor; 303-Conveying pipeline; 601-Jacket; 602-Liquid cooling container; 701-Recovery component; 702-Emergency gas purification component; 801-Human machine interface. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0027] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0028] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0029] To address the problems existing in the aforementioned related technologies, this embodiment provides a nano-coating modification device.

[0030] like Figure 1 As shown in the figure, an embodiment of the present invention provides a nano-coating modification device, including a reaction vessel, the reaction vessel comprising: The reaction chamber 101 includes a stabilizing section 1011, a conical accelerating section, and a pushing section 1014 connected sequentially along its axial direction. The stabilizing section 1011 is used to provide an initial mixing space for the matrix particles and nano-coating materials to mix and form a first mixture. The inner diameter of the conical accelerating section gradually decreases from one end toward the stabilizing section 1011 to the other end toward the pushing section 1014. The pushing section 1014 is used to temporarily store the second mixture after it has been fully mixed. A static mixer 103 includes a partition structure 1032, which is embedded between the two ends of the conical acceleration section. The partition structure 1032 has a plurality of partition mesh holes arranged in an array. The partition structure 1032 is used to cut the first mixture into a second mixture with a smaller volume through the plurality of partition mesh holes.

[0031] Specifically, the reaction chamber 101 may be a hollow cylindrical structure with a variable diameter.

[0032] The stabilizing section 1011, the conical acceleration section, and the pushing section 1014 can be integrally formed to form the reaction chamber 101. The reaction chamber 101 can be made of stainless steel, and the inner wall is polished (roughness Ra≤0.8μm) to reduce material adhesion and improve high temperature resistance and corrosion resistance.

[0033] The stabilizing section 1011 can be a cylindrical structure with an inner diameter of 300 to 500 mm and a height of 400 to 600 mm.

[0034] The conical acceleration section gradually narrows to 80 to 120 mm from the end near the stabilizing section 1011 (300 to 500 mm) to the end near the pushing section 1014. Its main function is to accelerate the airflow and material through cross-sectional contraction, thereby increasing the movement speed of the material particles. The inner diameter of the pushing section 1014 can be the same as that of the stabilizing section 1011, and its height can be 200 to 300 mm.

[0035] Combination Figure 2 As shown, the bottom of the push section 1014 is connected to the discharge valve 102, which can store a large amount of the second mixture.

[0036] The partition structure 1032 can be fixedly installed between the two ends of the conical acceleration section along its axial direction. The nano-coating modification device may also include a frame 1, with the reaction chamber 101 fixedly disposed at the center of the frame 1.

[0037] In this embodiment, the nano-coating modification device mainly includes a reaction vessel, and may also include a gas supply and processing system 2, a material conveying system 3, and an injection system. The reaction vessel includes a reaction chamber 101 and a static mixer 103. The reaction chamber 101 is a cylindrical structure with a variable diameter. The stabilizing section 1011, the conical acceleration section, and the pushing section 1014 are arranged along the axial direction of the reaction chamber 101 and connected in sequence. The gas supply and processing system 2 can introduce a mixed gas formed by mixing different types of inert gases into the stabilizing section 1011. The material conveying system 3 can introduce matrix particles into the stabilizing section 1011. The injection system can introduce nano-coating materials into the stabilizing section 1011. The matrix particles and nano-coating materials can be initially mixed in the stabilizing section 1011 to form a first mixture, which can ensure that the airflow and the first mixture maintain a stable flow state before entering the conical acceleration section. Since the inner diameter of the conical acceleration section gradually decreases from the end facing the stabilizing section 1011 to the end facing the pushing section 1014, the conical acceleration section with its shrinking cross-section can increase the speed of the airflow and the first mixture, reduce the material retention in the inner peripheral wall area of ​​the reaction chamber 101, and thus lay the foundation for subsequent mixing and coating.

[0038] Because the partition structure 1032 of the static mixer 103 is embedded in the conical acceleration section, the multiple partition meshes distributed in an array on the partition structure 1032 can not only cut the high-speed moving first mixture passing through it, but also divide the first mixture into a second mixture with a smaller volume. Correspondingly, this can improve the uniformity of the mixing and coating of the matrix particles and the nano-coating material, making the coating layer (i.e., the nano-coating material) formed on the outer layer of the matrix particles more uniform. Moreover, the cooperation between the conical acceleration section and the partition structure 1032 can eliminate the "mixing dead zone" in the reaction chamber 101, so that the first mixture in the conical acceleration section can be forced to pass through the partition meshes of the partition structure 1032, improving the cutting and coating rate of the first mixture. The pushing section 1014 can be located on the side of the conical acceleration section away from the stabilizing section 1011, and can be used to temporarily store the fully mixed second mixture.

[0039] In short, by combining the segmented design of the reaction chamber 101 along its axis with the partition structure 1032 of the static mixer 103, the airflow and materials can be accelerated, avoiding the presence of coating dead zones ("mixing dead zones") caused by uneven local flow rates within the reaction chamber 101. This improves the mixing uniformity of the matrix particles and the nano-coating material, thereby enhancing the coating consistency and modification stability of the nano-coating material on the outer layer of the matrix particles.

[0040] Optionally, combined Figure 1 As shown, the partition structure 1032 includes a plurality of grid plates stacked along the axial direction of the reaction chamber 101. The grid plates are provided with a plurality of holes arranged at intervals. The plurality of holes of two adjacent grid plates are intersected and form the partition mesh.

[0041] Specifically, multiple grid plates are stacked along the axial direction of the reaction chamber 101 to form a multi-layer grid plate partition structure 1032.

[0042] The grid plate has multiple holes arranged at intervals, which means that multiple holes on the same grid plate can be arranged at intervals along the same direction, or multiple holes on the same grid plate can be arranged at intervals along different directions.

[0043] The multiple holes of two adjacent grid plates are arranged in an intersecting manner, which means that the holes of two adjacent grid plates are not directly aligned vertically, but are staggered or intersecting each other, and these intersecting holes can form the separating mesh.

[0044] In this optional embodiment, since the holes of two adjacent grid plates of the multiple grid plates arranged along the axial direction in the partition structure 1032 are intersected, the mixed gas drives the first mixture to undergo multiple changes in direction and speed as it passes through the partition mesh of the partition structure 1032. This not only cuts the mixture into a smaller second mixture, but also generates turbulence, making the matrix particles and the nano-coating material mix more evenly and further improving the mixing effect of the two.

[0045] Optionally, combined Figure 1 As shown, the static mixer 103 also includes a plurality of guide vanes 1031, which are fixedly installed in a ring at intervals on the end face of the partition structure 1032 facing the stable section 1011.

[0046] Specifically, the guide vane 1031 can be made of stainless steel sheet with a certain thickness, for example, 2 to 3 mm. Multiple guide vanes 1031 can be arranged in a ring at intervals along the outer edge of the upper grid plate in the partition structure 1032. Each guide vane 1031 is arranged at an angle to the axis of the reaction chamber 101, for example, the angle range can be 30°-45°.

[0047] In this optional embodiment, since multiple guide vanes 1031 are fixedly installed in a ring at intervals on the end face of the partition structure 1032 facing the stabilizing section 1011, the ring-arranged guide vanes 1031 not only converge the vortex airflow (i.e., the mixed gas and the first mixture) entering the conical acceleration section near the stabilizing section 1011 and extending to the partition structure 1032, but also guide the airflow along a fixed direction, avoiding airflow turbulence. This ensures the flow symmetry and uniform distribution of the first mixture in the mixed gas, allowing the matrix particles and nanoparticles to flow together. The coating material is mixed more evenly, and the guide plate 1031 is set at an angle to the axis of the reaction chamber 101, which can also cut the first mixture for the first time. As the airflow continues to flow, and after passing through the separation mesh of the separation structure 1032, the first mixture can be cut a second time. In other words, the guide plate 1031 and the separation mesh of the grid plate can be combined to cut the first mixture multiple times, which can further cut it into a second mixture with a smaller volume, thereby further improving the uniformity of the mixing and coating of the nano-coating material and the matrix particles in the second mixture.

[0048] In addition, the multiple guide vanes 1031 arranged in a ring at intervals can ensure that the first mixture is highly uniform before entering the separation structure 1032, reducing the risk of the first mixture material being blocked at the separation mesh, further eliminating the "mixing dead zone", and ultimately, the uniformity of the coating thickness of the matrix particles is further improved.

[0049] Optionally, combined Figure 1As shown, the conical acceleration section includes a first conical acceleration section 1012 and a second conical acceleration section 1013 connected sequentially along the axial direction of the reaction chamber 101. The end of the first conical acceleration section 1012 away from the second conical acceleration section 1013 is connected to the end of the stabilizing section 1011. The end of the second conical acceleration section 1013 away from the first conical acceleration section 1012 is connected to the pushing section 1014. The cone angle of the second conical acceleration section 1013 is smaller than the cone angle of the first conical acceleration section 1012.

[0050] Specifically, the cone angle of the first cone angle acceleration section 1012 is represented by α, and the value of cone angle α can be in the range of 12°≤α≤25°. Preferably, cone angle α=18°. The inner diameter of the first cone angle acceleration section 1012 gradually decreases from the end of the stable section 1011 (300 to 500 mm) to 150 to 250 mm.

[0051] The cone angle of the second cone-angle acceleration section 1013 is denoted by β, where β < α, and preferably, β = 8°. The inner diameter of the second cone-angle acceleration section 1013 gradually decreases from the end of the first cone-angle acceleration section 1012 (150 to 250 mm) to 80 to 120 mm.

[0052] In this optional embodiment, the first cone-angle acceleration section 1012, by contracting the cross-section of the reaction chamber 101, directly connects to the stabilization section 1011, and can accelerate the airflow and the first mixture from the stabilization section 1011 for the first time, thereby increasing the speed of the first mixture and laying the foundation for subsequent mixing and coating. This section is the main area for the nano-particle scaling of the first mixture. Within this cone angle range, the airflow can achieve the best acceleration effect and the least energy loss. The two ends of the second cone-angle acceleration section 1013 are connected to the first cone-angle acceleration section 1012 and the pushing section 1014, respectively. The smaller cone angle means a gentler convergence, which allows the first mixture to achieve a second acceleration of the airflow and material on the basis of already achieving a high speed, so that the material particles can reach a higher relative motion speed. The second cone-angle acceleration section 1013 has a relatively gentle cone-angle acceleration design, which not only avoids the violent turbulence or local vortex that may be caused by a sudden increase in flow velocity, but also helps to prolong the material residence time, promote the uniform deposition and reaction of nano-coating materials and matrix particles, and correspondingly enhance the adhesion effect of nano-coating materials on the surface of matrix particles (such as lithium iron phosphate particles).

[0053] Optionally, combined Figure 1 As shown, the separation structure 1032 is fixed at the connection between the first cone-angle acceleration section 1012 and the second cone-angle acceleration section 1013.

[0054] Specifically, the partition structure 1032 in the static mixer 103 can be fixedly installed at the connection between the first cone-angle acceleration section 1012 and the second cone-angle acceleration section 1013.

[0055] In this optional embodiment, since the partition structure 1032 of the static mixer 103 is installed between the two cone-angle acceleration sections, in other words, the partition structure 1032 is located at the outlet of the first cone-angle acceleration section 1012 and the inlet of the second cone-angle acceleration section 1013, the first mixture from the stable section 1011 is accelerated to a higher speed for the first time when it enters the first cone-angle acceleration section 1012 (larger cone angle). As the airflow continues to flow, when passing through the partition structure 1032, it is cut multiple times by the partition mesh of the multiple grid plates stacked in the partition structure 1032, ensuring that all the kinetic energy generated in the first cone-angle acceleration section 1012 is used most efficiently for cutting, dispersing and mixing, without waste or attenuation. The second mixture formed by the cutting of the separating mesh then enters the second cone-angle acceleration section 1013 (smaller cone angle) for gentle acceleration. This avoids the possibility of new local eddies or concentration gradients being generated inside the second cone-angle acceleration section 1013 due to uneven material at the inlet. This creates excellent initial conditions for the second smooth acceleration of the material by the second cone-angle acceleration section 1013, resulting in homogenization.

[0056] Furthermore, the partition structure 1032 can be fixed to the connection of the two cone-angle acceleration sections by welding, bonding or other methods, which can improve the connection stability between the static mixer 103 and the reaction chamber 101, better withstand the pulsation and impact generated when the fluid passes through the partition mesh, reduce the vibration of the partition structure 1032 relative to the reaction chamber 101, and extend the equipment life of the nano-coating modification device.

[0057] Optionally, combined Figure 1 As shown, the static mixer 103 further includes a conical guide shroud 1033, which is connected to the outer edge of the end face of the partition structure 1032 away from the guide plate 1031. The axial dimensions of the two ends of the conical guide shroud 1033 are respectively matched with the outer diameter of the partition structure 1032 and the inner diameter of the end of the second cone-angle acceleration section 1013 near the first cone-angle acceleration section 1012.

[0058] Specifically, the conical fairing 1033 can adopt a conical structure with a hollow interior and an open bottom.

[0059] The connection between the first cone-angle acceleration section 1012 and the second cone-angle acceleration section 1013 may have a variable-diameter annular step structure so that the partition structure 1032 and the guide shroud of the static mixer 103 can be located within the annular step structure.

[0060] One end of the conical fairing 1033, such as the top end, can be fixedly connected to the bottom edge of the partition structure 1032, and the other end of the conical fairing 1033, such as the bottom end, can extend to the end of the second cone-angle acceleration section 1013 near the end of the first cone-angle acceleration section 1012. The cone angle of the conical fairing 1033 is consistent with the cone angle β of the second cone-angle acceleration section 1013.

[0061] The inner diameter of the conical fairing 1033 can be gradually reduced from the outer dimension of the partition structure 1032 (150 to 250 mm) to the initial inner diameter of the second cone acceleration section 1013 (80 to 120 mm).

[0062] In this optional embodiment, the conical guide shield 1033 is connected to the outer edge of the end face of the partition structure 1032 away from the guide plate 1031, thereby realizing the connection between the conical guide shield 1033 and the partition structure 1032. The axial dimensions of the two ends of the conical guide shield 1033 correspond to the outer diameter of the partition structure 1032 and the inner diameter of the end of the second conical acceleration section 1013 near the first conical acceleration section 1012, respectively. The conical channel of the conical guide shield 1033 allows the second mixture formed after being cut by the partition structure 1032 to adhere tightly to the inner wall of the conical guide shield 1033. Entering the second cone-angle acceleration section 1013 in a continuous and stable laminar flow or highly ordered turbulent state not only completely avoids the upward backflow of the second mixture in the airflow, but also enables the second mixture coming out of the conical guide shroud 1033 to be synchronously and uniformly added into the second cone-angle acceleration section 1013 and redistributed within the second cone-angle acceleration section 1013. This ensures that the second mixture enters the second cone-angle acceleration section 1013 smoothly and uniformly, improves the time consistency of the second mixture entering the pushing section 1014 from the second cone-angle acceleration section, and avoids uneven mixing caused by sudden changes in local airflow velocity.

[0063] Optionally, combined Figure 2 , Figure 3 and Figure 5 As shown, the nano-coating modification device also includes a gas supply and processing system 2. The gas supply and processing system 2 includes a carrier gas mixing tank 201, a gas supply pipeline 202, and a high-speed vortex generator 206. The carrier gas mixing tank 201 is provided with a first air outlet and at least two first air inlets. The at least two first air inlets are used to allow different types of inert gases to enter respectively. One end of the gas supply pipeline 202 is connected to the first air outlet of the carrier gas mixing tank 201, and the other end of the gas supply pipeline 202 is connected to the stabilization section 1011 through the high-speed vortex generator 206. It is used to convert the mixed gas formed by mixing different types of inert gases in the carrier gas mixing tank 201 into a high-speed airflow and introduce it into the stabilization section 1011.

[0064] Specifically, the gas supply and processing system 2 is used to mix various types of inert gases to form a stable and clean mixed gas and introduce it into the stable section 1011 of the reaction chamber 101.

[0065] The carrier gas mixing tank 201 has a volume ranging from 50 to 100L and can be made of stainless steel. The top of the carrier gas mixing tank 201 has at least two first air inlets (for introducing inert gases such as nitrogen and argon, respectively), and the bottom of the carrier gas mixing tank 201 has a first air outlet connected to the gas supply pipeline 202. A stirring device (with a rotation speed of 50-100 rpm) can be installed inside the carrier gas mixing tank 201 to achieve uniform mixing of different types of inert gases, forming a mixed gas and ensuring the stability of the carrier gas composition entering the reaction chamber 101.

[0066] The two ends of the gas supply line 202 are used to connect the carrier gas mixing tank 201 and the high-speed vortex generator 206.

[0067] The high-speed vortex generator 206 is fixedly installed on the outer wall of the stabilizing section 1011 and is connected to the stabilizing section 1011. The high-speed vortex generator 206 can be a pipe connector structure with a variable diameter channel.

[0068] In this optional embodiment, multiple different types of inert gases (such as nitrogen, argon, etc.) can enter the interior of the carrier gas mixing tank 201 through the corresponding first air inlet and be mixed to form a mixed gas. Then, it can be transported to the high-speed eddy generator 206 through the gas supply pipeline 202, so that the mixed gas can be converted into high-speed gas by the high-speed eddy generator 206. Since the high-speed eddy generator 206 is connected to the stabilization section 1011, the high-speed gas enters the stabilization section 1011 at a high speed.

[0069] Optionally, the gas supply and processing system 2 includes a plurality of high-speed vortex generators 206, which are radially spaced around the stable section 1011.

[0070] Specifically, multiple high-speed eddy current generators 206 can be fixedly installed on the stabilizing section 1011 at radial intervals (e.g., equal spacing), and each high-speed eddy current generator 206 is connected to the stabilizing section 1011. The number of high-speed eddy current generators 206 can be three, in which case the included angle between two adjacent high-speed eddy current generators 206 is 120°.

[0071] In this optional embodiment, multiple high-speed vortex generators 206 are evenly distributed radially along the stabilization section 1011 at the top of the reaction chamber 101, and adjacent high-speed vortex generators 206 are arranged at a certain angle, so that high-speed airflow carrier gas can be injected into the interior of the stabilization section 1011 of the reaction chamber 101 from different directions to form a rotating vortex, thereby improving the mixing efficiency of the high-speed airflow and the first mixture in the stabilization section 1011.

[0072] Optionally, combined Figure 4 As shown, the air supply and processing system 2 also includes a vortex guide structure 207, which has a spiral groove. The vortex guide structure 207 is embedded and fixed in the high-speed vortex generator 206 and is used to convert the high-speed airflow into a high-speed rotating airflow.

[0073] Specifically, the vortex guide structure 207 can adopt the following structure: for example, the vortex guide structure 207 is a helical rod with helical grooves formed on its peripheral wall; or, the vortex guide structure 207 includes multiple helical plates, which are spaced apart and intertwined to form helical grooves between them. These helical grooves are mainly used to convert high-speed airflow into high-speed rotating airflow. The pitch of the vortex guide structure 207 can range from 10 to 15 mm.

[0074] The eddy current guiding structure 207 can be installed inside or at the outlet end of the high-speed eddy current generator 206 by means of bonding, welding or integral molding.

[0075] In this optional embodiment, a vortex guide structure 207 is fixedly installed inside the outlet end of each high-speed vortex generator 206. Through the spiral groove of the vortex guide structure 207, the high-speed airflow carrier gas can be guided to form a high-speed rotating airflow in the spiral groove of the outlet end. The airflow speed can reach 30 to 50 m / s, which further enhances the vortex effect in the stable section 1011 of the reaction chamber 101 and correspondingly improves the mixing efficiency of the high-speed rotating airflow and the first mixture.

[0076] Optionally, combined Figure 2 and Figure 3 As shown, the gas supply and processing system 2 also includes a gas pressure reducing valve 204 and a mass flow controller 203. The gas pressure reducing valve 204 and the mass flow controller 203 are respectively connected to the gas supply pipeline 202. The gas pressure reducing valve 204 is used to reduce the pressure of the high-pressure mixed gas output from the carrier gas mixing tank 201 to a stable pressure gas. The mass flow controller 203 is used to monitor and control the flow rate of the stable pressure gas in the gas supply pipeline 202.

[0077] Specifically, the gas pressure reducing valve 204 and the mass flow controller 203 are both installed on the gas supply line 202 and are connected to the gas supply line 202 respectively.

[0078] The gas pressure reducing valve 204 has an adjustment range of 0.1-1.0MPa, and the mass flow controller 203 has a range of 0-50L / min and an accuracy of ±1%FS.

[0079] In this optional embodiment, the gas pressure reducing valve 204 can reduce the pressure of the high-pressure mixed gas output from the carrier gas mixing tank 201 and flowing in the gas supply pipeline 202 to a stable pressure gas; the mass flow controller 203 can monitor and control the flow rate of the carrier gas introduced into the stable section 1011 from the gas supply pipeline 202 in real time, ensuring a stable flow rate of the carrier gas entering the reaction chamber 101. In conjunction with... Figure 2 As shown, the nano-coating modification device also includes a central control cabinet 8, at least one of the gas pressure reducing valve 204 and mass flow controller 203 is electrically connected to the central control cabinet 8, and is used to realize closed-loop control of the airflow in the stable section 1011 of the gas supply pipeline 202.

[0080] Optionally, the gas supply line 202 is made of antistatic material.

[0081] Specifically, the gas supply line 202 can be made of antistatic material such as polytetrafluoroethylene (PTFE), which has good corrosion resistance, high temperature resistance (operating temperature range -200℃ to 260℃) and antistatic properties.

[0082] In this optional embodiment, the gas supply pipeline 202 is made of antistatic material, which can effectively prevent material adsorption or safety hazards caused by static electricity accumulation in the gas supply pipeline 202.

[0083] Optionally, combined Figure 2 and Figure 5 As shown, the gas supply and processing system 2 also includes a connecting valve 205, which has an inlet end and multiple outlet ends. The other end of the gas supply pipeline 202 is connected to the inlet end of the connecting valve 205, and the multiple outlet ends are connected to the corresponding multiple high-speed vortex generators 206.

[0084] Specifically, the connecting valve 205 can be a ball valve structure of a multi-way valve, which can have one air inlet end and multiple air outlet ends. The air inlet end is connected to the end of the air supply pipeline 202 away from the carrier gas mixing tank 201, and each air outlet end is connected to each high-speed eddy current generator 206 respectively.

[0085] The number of exhaust ends can be matched with the number of high-speed vortex generators 206.

[0086] In this optional embodiment, since the inlet end of the connecting valve 205 is connected to the air supply pipeline 202, and the multiple outlet ends of the connecting valve 205 are connected to the corresponding multiple high-speed vortex generators 206, in other words, the connecting valve 205 can be used as a diversion connecting valve 205 component between the air supply pipeline 202 and the multiple high-speed vortex generators 206, thereby improving the ease of disassembly and assembly of the air supply pipeline 202 and the high-speed vortex generators 206.

[0087] Optionally, combined Figure 2 , Figure 3 and Figure 5 As shown, the nano-coating modification device also includes a material conveying system 3, which includes a screw feeder 301, a pneumatic conveyor 302 and a conveying pipe 303 connected in sequence. The screw feeder 301 is used to hold the matrix particles, and the pneumatic conveyor 302 is connected to the stabilization section 1011 through the conveying pipe 303.

[0088] Specifically, the screw feeder 301 can be a tank structure, the interior of which is used to hold and convey matrix particles into the pneumatic conveyor 302. The screw feeder 301 can adopt the following structure, for example, the screw feeder 301 includes a tank and screw blades, the screw blades are installed in the tank, the matrix particles are loaded into the tank, and the rotation of the screw blades is used to convey the matrix particles into the pneumatic conveyor 302.

[0089] The pneumatic conveyor 302 is a fluidization technology device that uses airflow to transport particulate materials in a closed pipeline.

[0090] The conveying pipe 303 can be used as a connecting pipe between the pneumatic conveyor 302 and the stabilizing section 1011.

[0091] In this optional embodiment, the screw feeder 301 can be used to provide a stable and adjustable feed rate of matrix particles to the pneumatic conveyor 302, avoiding blockage or fluctuations. The pneumatic conveyor 302 can transport the matrix particles using gas (such as nitrogen), which can effectively prevent the matrix particles from agglomerating and ensure that the matrix particles are dispersed. Finally, the matrix particles can be transported to the stabilization section 1011 through the conveying pipe 303, thereby realizing the introduction of matrix particles into the stabilization section 1011 of the reaction chamber 101.

[0092] The screw feeder 301 can be a two-stage screw feeder 301 of the prior art. The screw feeder 301 can have the following structure: the screw feeder 301 includes a first feeding bin, a second feeding bin, and a weighing module. The first feeding bin is connected to the stabilizing section 1011 through the second feeding bin. The volume of the first feeding bin is larger than the volume of the second feeding bin. The weighing module is connected to the second feeding bin and is used to monitor the weight change of the material in the second feeding bin.

[0093] Specifically, the volume of the first feeding hopper can range from 100 to 200L, and the volume of the second feeding hopper can range from 50 to 100L.

[0094] The weighing module mainly includes a weighing sensor, a load-bearing structure, and a signal processing unit. The load-bearing structure can be installed at the bottom of the second feeding hopper and is used to support the matrix particles. The weighing sensor is connected to the load-bearing structure to sense the weight of the matrix particles on the load-bearing structure, convert it into an electrical signal, and transmit the weight to the signal processing unit. The signal processing unit amplifies and converts the signal output by the weighing sensor and sends it to the signal connection of the central control cabinet. It can monitor the weight change of the matrix particles in the second feeding hopper in real time, and then calculate the feeding amount (the feeding amount can be adjusted from 1 to 10 kg / h) to realize the quantitative conveying of matrix particles.

[0095] The screw feeder 301 also includes screw blades. Screw blades are installed in the first feeding bin and the second feeding bin respectively. The screw blades can be rotated to realize the conveying operation of matrix particles.

[0096] The helical blades can be made of wear-resistant alloy material (hardness HRC≥50), which can reduce the wear of the helical blades by matrix particles and extend their service life.

[0097] Optionally, the pneumatic conveyor 302 may be a prior art Venturi pneumatic conveyor 302. For example, the pneumatic conveyor 302 includes a converging section, a throat section and an expanding section connected in sequence. The end of the converging section away from the throat section is connected to the screw feeder 301, and the end of the expanding section away from the throat section is connected to the conveying pipe 303. The diameter of the converging section gradually decreases along the conveying direction of the nano-coated material within the pneumatic conveyor 302, and the diameter of the expanding section gradually increases along the conveying direction of the nano-coated material within the pneumatic conveyor 302.

[0098] Specifically, the pneumatic conveyor 302 can be a variable diameter pipe structure, with the converging section, throat section and expanding section connected in sequence to form an integral pneumatic conveyor 302.

[0099] The converging section serves as the inlet section of the pneumatic conveyor 302. It has an air inlet for supplying compressed gas, such as inert gas, into the pneumatic conveyor 302. This compressed gas drives the transport of matrix particles in the stabilizing section 1011 within the pneumatic conveyor 302. The diameter of the converging section gradually decreases along the flow direction of the airflow within the pneumatic conveyor 302. The throat section connects the converging section and the expanding section at its axial ends. This throat section, being the part with the smallest diameter or radial cross-sectional area in the pneumatic conveyor 302, is crucial for generating the Venturi effect and producing the necessary vacuum (or negative pressure) for transporting the matrix particles. The expanding section serves as the expansion section of the pneumatic conveyor 302, and its diameter gradually increases along the flow direction of the airflow within the pneumatic conveyor 302.

[0100] In this optional embodiment, after the screw feeder 301 conveys the matrix particles to the pneumatic conveyor 302, since the converging section is provided with an air inlet for compressed gas, the compressed gas can drive the matrix particles to flow in the converging section. As the diameter of the converging section gradually decreases, the flow rate of the matrix particles can be accelerated. After passing through the throat section, the particles enter the expansion section, where the flow rate of the matrix particles in the compressed gas can be appropriately reduced. The decelerated matrix particles are then conveyed to the stabilizing section 1011 through the conveying pipe 303.

[0101] Optionally, the pneumatic conveyor 302 further includes a wear-resistant bushing, which is detachably nested within the throat section.

[0102] Specifically, the converging section, the throat section, and the expanding section can be connected by means of detachable connections, such as threaded connections, or by connections with fastening bolts.

[0103] A wear-resistant bushing can be installed on the inner wall of the throat section using a threaded connection. The wear-resistant bushing can be made of wear-resistant materials such as alumina ceramic.

[0104] In this optional embodiment, the wear-resistant bushing is detachably nested inside the throat section, thereby allowing the wear-resistant bushing to withstand the scouring of high-speed airflow and matrix particles, reducing the wear of the throat section and correspondingly extending its service life.

[0105] Optionally, the material conveying system 3 further includes a one-way valve, which is connected to the expansion section and is used to prevent the mixed gas and the first mixture in the stabilization section 1011 from flowing back into the pneumatic conveyor 302.

[0106] Specifically, the check valve can be installed inside the expansion section by means of threaded connection or adhesive bonding.

[0107] In this optional embodiment, by connecting the expansion section with a one-way valve, in other words, by installing the one-way valve at the outlet end of the pneumatic conveyor 302, the airflow and material (matrix particles) in the pneumatic conveyor 302 are allowed to be conveyed unidirectionally into the stabilization section 1011, while preventing the mixed gas and the first mixture in the stabilization section 1011 from flowing back into the pneumatic conveyor 302, thereby ensuring the stability of the conveying process of the material conveying system 3.

[0108] Optionally, combined Figure 3 As shown, the conveying pipe 303 is bent, and the radius of curvature of the conveying pipe 303 is greater than or equal to twice the inner diameter of the conveying pipe 303.

[0109] Specifically, the conveying pipe 303 can be made of stainless steel, which can extend its service life.

[0110] The inner diameter of the conveying pipe 303 can range from 50 to 80 mm, and the wall thickness can range from 3 to 5 mm.

[0111] The radius of curvature of the conveying pipe 303 is greater than or equal to twice the inner diameter of the conveying pipe 303. Preferably, the radius of curvature of the conveying pipe 303 is greater than or equal to three times the inner diameter of the conveying pipe 303.

[0112] In this optional embodiment, the radius of curvature of the conveying pipe 303 is greater than or equal to twice the inner diameter of the conveying pipe 303, thereby reducing the deposition and blockage of matrix particles in the conveying pipe 303.

[0113] Optionally, combined Figure 3 As shown, the nano-coating modification device also includes an injection system, which is installed on the side of the stabilization section 1011 close to the high-speed vortex generator 206. The injection system is used to inject the nano-coating material into the stabilization section 1011, and the injection direction of the injection system into the stabilization section 1011 is set at an angle to the airflow direction of the mixed gas delivered by the high-speed vortex generator 206 into the stabilization section 1011.

[0114] Specifically, nano-coating materials may include nano-alumina ( ), nano zirconium dioxide ( )wait.

[0115] The spraying system is mainly used to spray nano-coating materials with a certain flow rate into the stabilization section 1011. The spraying system can adopt the existing spraying device 4. For example, the spraying system includes a hopper, a screw pump and an atomizing nozzle connected in sequence. The volume of the hopper can be 10 to 20 L, and the speed of the screw pump can be adjusted from 10 to 100 rpm. The screw pump can be electrically connected to the central control cabinet 8, and the spraying amount of nano-coating material can be controlled by adjusting the speed (the spraying amount can be adjusted from 0.1 to 1 kg / h).

[0116] The atomizing nozzle can adopt a high-pressure air-assisted atomization design, with a compressed air pressure range of 0.3-0.5MPa, which can atomize the nano-coated material into droplets with a particle size of 1-5μm, thereby improving the dispersion uniformity of the nano-coated material in the reaction chamber 101.

[0117] The atomizing nozzle is fixedly installed in the stabilizing section 1011 and is set at an angle to the high-speed vortex generator 206, thereby ensuring that the injection direction of the injection system injecting the nano-coated material into the stabilizing section 1011 is set at an angle, for example, 45°, to the airflow direction of the mixed gas delivered by the high-speed vortex generator 206 into the stabilizing section 1011.

[0118] In this optional embodiment, since the injection direction of the injection system into the stabilization section 1011 is set at an angle to the airflow direction of the mixed gas delivered by the high-speed vortex generator 206 into the stabilization section 1011, the nano-coating material and the matrix particles can be fully mixed.

[0119] Optionally, combined Figure 2 As shown, the nano-coating modification device also includes a waste gas treatment and recovery system 7. The waste gas treatment and recovery system 7 includes a recovery component 701 for recovering the matrix particles and the nano-coating material entrained in the unreacted waste gas generated in the recovery reaction stage of the stabilization section 1011 to the screw feeder 301. The recovery component 701 includes a first exhaust pipe, a recovery container, a recovery pipe, and a discharge valve. The two ends of the first exhaust pipe are respectively connected to the stabilization section 1011 and the recovery container. The recovery container is provided with a first outlet. The first outlet of the recovery container is connected to the screw feeder 301 through the recovery pipe. The discharge valve is connected between the recovery container and the screw feeder 301.

[0120] Specifically, the recovery component 701 is mainly used to recover the matrix particles and the nano-coating material entrained in the unreacted waste gas generated in the recovery reaction stage of the stabilization section 1011 into the screw feeder 301.

[0121] The recycling container can be a bag filter (with a filtration area of ​​5-10㎡, filter bag material of polytetrafluoroethylene, and filtration accuracy of 0.1μm). The bag filter is connected to the top of the reaction chamber 101, such as the stable section 1011, through the first exhaust pipe. It can recover the matrix particles and nano-coated material particles entrained in the waste gas (recovery rate ≥99%).

[0122] The discharge valve can be installed at the first outlet of the recycling container, or it can be installed on the recycling pipe and connected to the recycling pipe.

[0123] In this optional embodiment, unreacted material particles generated during the reaction process, such as matrix particles and the nano-coating material, can enter the recovery container through the first exhaust pipe in the reaction chamber 101 to temporarily store the recovered matrix particles and the nano-coating material. When it is necessary to reuse the recovered matrix particles and the nano-coating material, the discharge valve can be opened, so that the material in the recovery container can be transported to the first feeding bin of the screw feeder 301 through the recovery pipe, thereby realizing the recycling of materials and saving costs.

[0124] Optionally, combined Figure 2 As shown, the waste gas treatment and recovery system 7 further includes an exhaust gas purification component 702. The recovery container is also provided with a second outlet. The exhaust gas purification component 702 includes a second exhaust pipe, an adsorption structure, and an exhaust gas detection device. The second outlet of the recovery container is connected to the adsorption structure through the second exhaust pipe. The adsorption structure is provided with a third outlet. The exhaust gas detection device is installed at the third outlet of the adsorption structure. The exhaust gas detection device is used to monitor the exhaust gas concentration in the adsorption structure.

[0125] Specifically, the exhaust gas purification component 702 is used to purify the exhaust gas discharged from the recovery container.

[0126] The adsorption structure can be an activated carbon adsorption tower (the adsorbent is columnar activated carbon, and the filling amount is 50 to 100 kg), which can adsorb trace organic impurities in the waste gas (such as volatile dispersants in the coating material). The purified exhaust gas emission concentration meets the requirements of relevant standards such as the "Integrated Emission Standard of Air Pollutants" (GB16297-1996).

[0127] The top of the adsorption structure is equipped with a third outlet, at which an exhaust gas detection device (concentration sensor) is installed to monitor the exhaust gas concentration in real time. The exhaust gas detection device is electrically connected to the central control cabinet 8. When the exhaust gas concentration in the adsorption structure exceeds the standard, the central control cabinet 8 will issue an alarm signal to remind the user to replace the adsorbent in the adsorption structure, such as activated carbon.

[0128] The exhaust gas purification assembly 702 includes an exhaust valve, which can be installed at the second outlet or installed on and connected to the second exhaust pipe. This prevents material in the recovery container from being discharged through the second outlet through the exhaust gas purification assembly 702 during the recovery operation of the recovery assembly 701, thus preventing material waste.

[0129] In this optional embodiment, if the material in the recovery container does not need to be reused or does not meet the requirements for reuse, the exhaust valve of the exhaust gas purification component 702 can be opened, so that the exhaust gas in the recovery container enters the adsorption structure through the second outlet, the exhaust valve and the second exhaust pipe in sequence. At this time, the adsorption structure can adsorb trace organic impurities in the exhaust gas. After the trace organic impurities are adsorbed in the exhaust gas in the adsorption structure, the remaining gas can be discharged through the third outlet.

[0130] Optionally, combined Figure 2 As shown, the nano-coating modification device also includes a power supply device and a temperature control component. The power supply device is electrically connected to the temperature control component and is used to provide working power to the temperature control component. The temperature control component is in contact with the reaction chamber 101 and is used to adjust the internal temperature of the reaction chamber 101.

[0131] Specifically, the power supply device may include multiple intermediate frequency power supplies (output power of 10-30kW, frequency of 10-20kHz).

[0132] The contact between the temperature control component and the reaction chamber 101 means that the temperature control component and the outer peripheral wall of the reaction chamber 101 can be in contact by means of bonding, connection or other methods.

[0133] In this optional embodiment, the power supply device is electrically connected to the temperature control component to provide working power to the temperature control component. The temperature control component is in contact with the reaction chamber 101, thereby adjusting the internal temperature of the reaction chamber 101 through the temperature control component to provide a stable heating environment for the reaction chamber 101, so as to meet the temperature conditions required for the reaction between the matrix particles and the nano-coated material (the reaction temperature is usually 300-600℃).

[0134] Optionally, combined Figure 2 and Figure 3 As shown, the nano-coating modification device also includes a central control cabinet 8. The temperature control component includes a heating module, which includes multiple heating coils 5. The heating coils 5 are respectively installed on the outer peripheral walls of the stabilizing section 1011 and the conical acceleration section. The heating coils 5 are electrically connected to the output terminal of the power supply device, and the input terminal of the power supply device is electrically connected to the central control cabinet 8. The central control cabinet 8 is used to control the heating temperature of the heating coils 5 by adjusting the output power of the power supply device.

[0135] Specifically, the central control cabinet 8 serves as the control core of the device, used to achieve coordinated operation and parameter control of various system modules. It mainly includes a human-machine interface 801, a PLC controller (such as a Siemens S7-1200 series) and a data acquisition module. The human-machine interface 801 can be a 10-inch touch screen, which can display the operating parameters of the device in real time (such as reaction temperature, carrier gas flow rate, feed rate, injection rate, exhaust gas concentration, etc.) and support parameter setting, manual / automatic switching, fault alarm and other operations. The operation interface is displayed in Chinese, which is convenient for operators to use. At least one heating coil 5 can be installed on the outer peripheral wall of the stabilizing section 1011 and the conical acceleration section, respectively. The heating coil 5 corresponding to each of the stabilizing section 1011 and the conical acceleration section is electrically connected to different power supply devices, thereby enabling precise temperature control of different areas of the reaction chamber 101 (stabilizing section 1011 and conical acceleration section). The heating coil 5 can be an electromagnetic induction coil, which can be made of copper tubing (outer diameter 8 to 12 mm, wall thickness 1 to 2 mm), with 50-80 turns and a winding spacing of 5 to 10 mm. The heating coil 5 can also be a resistance heating coil.

[0136] Optionally, the heating module includes multiple temperature detection devices, which are respectively configured to detect the temperature values ​​of the stable section 1011 and the conical acceleration section; the temperature detection devices are electrically connected to the central control cabinet 8.

[0137] Specifically, the temperature sensing device can be a type K thermocouple with a measurement range of 0-1000℃ and an accuracy of ±1℃. The signal from the temperature sensing device is transmitted to the central control cabinet 8 through wires to form a closed-loop temperature control with the intermediate frequency power supply.

[0138] Temperature detection devices can be installed on the outer sides of the stabilization section 1011 and the conical acceleration section respectively, so as to detect the temperature value of the corresponding area through the temperature detection devices at the corresponding positions.

[0139] Temperature sensing devices can be contact or non-contact temperature sensors.

[0140] In this optional embodiment, a temperature detection device is installed on the outer wall of the reaction chamber 101 for each heating zone (e.g., the stabilizing section 1011 and the conical acceleration section). The temperature detection device transmits the temperature value signal of each heating zone to the central control cabinet 8 through wires, forming a closed-loop temperature control with the intermediate frequency power supply, ensuring that the temperature deviation of each area in the reaction chamber 101 is controlled within ±5℃, thus meeting the precise requirements of the reaction temperature.

[0141] Optionally, combined Figure 2 , Figure 3 and Figure 5 As shown, the temperature control component also includes a cooling module 6, which includes a liquid cooling container 602, an inlet pipe, a return pipe, a water pump, and a jacket 601. The jacket 601 is fitted onto the heating coil 5. The jacket 601 has a cavity structure and an inlet and a return port that communicate with the cavity structure. The liquid cooling container 602 is connected to the liquid inlet of the jacket 601 through the liquid inlet pipe, and the liquid return port of the jacket 601 is connected to the liquid cooling container 602 through the liquid return pipe; the water pump is connected between the liquid cooling container 602 and the liquid inlet.

[0142] Specifically, the cooling module 6 is used to cool the reaction chamber 101 to prevent damage to the equipment caused by excessively high temperature on the outer wall of the reaction chamber 101, and can also adjust the temperature gradient inside the reaction chamber 101.

[0143] The liquid-cooled container 602 may include a water tank and a refrigeration unit. The water tank is used to hold coolant, which may be water or other liquids as the cooling medium. The refrigeration unit is used to cool the coolant within the jacket 601 that absorbs heat from the surface of the heating coil 5. The refrigeration unit may be located inside the water tank and can be used to cool the coolant within the tank. The water tank volume ranges from 200 to 300 L.

[0144] The jacket 601 can be made of stainless steel. The jacket 601 is fitted onto the heating coil 5, allowing the jacket 601 to cool the heating coil 5 via heat conduction, preventing the heating coil 5 from overheating and damaging the reaction chamber 101. The inner wall of the jacket 601 is tightly fitted to the outer wall of the reaction chamber 101 (the fitting surface is sealed with thermally conductive sealant). The jacket 601 has a spiral-shaped flow channel (10 to 15 mm wide and 5 to 8 mm deep) inside, which extends the flow path of the cooling water within the jacket 601 and improves cooling efficiency. The outer wall of the jacket 601 is fixedly connected to the frame 1.

[0145] The liquid cooling container 602 can be connected to the bottom liquid inlet of the jacket 601 through the water inlet pipe, and the top liquid return port of the jacket 601 is connected to the liquid cooling container 602 through the water outlet pipe, which can form a cooling water circulation system, thereby cooling the heating coil 5 and preventing the temperature of the reaction chamber 101 from being too high.

[0146] The cooling module 6 also includes a flow sensor (range 0-30L / min) and an electric regulating valve. The flow sensor and the electric regulating valve are connected to the inlet pipe and are both connected to the central control cabinet 8. The cooling rate of the reaction chamber 101 can be controlled by adjusting the coolant flow rate to ensure that the temperature of the outer wall of the reaction chamber 101 does not exceed 80℃.

[0147] The central control cabinet 8 also includes a PLC controller, a mass flow controller 203 for the air supply and processing system 2, a weighing module and screw pump for the material conveying system 3, a screw pump for the injection device 4, a medium frequency power supply for the power supply device, a flow sensor and electric regulating valve for the cooling module 6, and a concentration sensor for the waste gas treatment and recovery system 7. These components are connected to the PLC controller via wires and can achieve automated control of each component according to preset programs or operator instructions. Data acquisition module: Real-time monitoring of operating parameters of each detection device (acquisition frequency 1 time / second), storing data in a local database (storage capacity ≥ 1 year), and supporting data export (Excel or CSV format) for easy traceability and analysis of the production process. In addition, the central control cabinet 8 has a self-diagnostic function. When a component malfunctions (such as an abnormal temperature sensor or low carrier gas flow), the fault location can be quickly identified, and an audible and visual alarm signal will be issued through the human-machine interface 801. Simultaneously, fault information will be recorded for easy troubleshooting by maintenance personnel.

[0148] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A nano-coating modification device, characterized in that, Includes a reaction vessel, said reaction vessel comprising: The reaction chamber (101) includes a stabilizing section (1011), a conical accelerating section, and a pushing section (1014) connected sequentially along its axial direction. The stabilizing section (1011) is used to provide an initial mixing space for the matrix particles and nano-coating materials to mix and form a first mixture. The inner diameter of the conical accelerating section gradually decreases from one end toward the stabilizing section (1011) to the other end toward the pushing section (1014). The pushing section (1014) is used to temporarily store the second mixture after it has been fully mixed. A static mixer (103) includes a partition structure (1032) which is embedded between the two axial ends of the conical acceleration section. The partition structure (1032) has a plurality of partition mesh holes arranged in an array. The partition structure (1032) is used to cut the first mixture into a smaller second mixture through the plurality of partition mesh holes.

2. The nano-coating modification device according to claim 1, characterized in that, The partition structure (1032) includes a plurality of grid plates stacked along the axial direction of the reaction chamber (101). The grid plates are provided with a plurality of holes arranged at intervals. The plurality of holes of two adjacent grid plates are intersected and form the partition mesh.

3. The nano-coating modification device according to claim 1, characterized in that, The static mixer (103) also includes a plurality of guide vanes (1031), which are arranged in a ring and fixedly installed on the end face of the partition structure (1032) facing the stable section (1011).

4. The nano-coating modification device according to claim 3, characterized in that, The conical acceleration section includes a first conical acceleration section (1012) and a second conical acceleration section (1013) connected sequentially along the axial direction of the reaction chamber (101). The end of the first conical acceleration section (1012) away from the second conical acceleration section (1013) is connected to the end of the stabilizing section (1011). The end of the second conical acceleration section (1013) away from the first conical acceleration section (1012) is connected to the pushing section (1014). The cone angle of the second conical acceleration section (1013) is smaller than the cone angle of the first conical acceleration section (1012).

5. The nano-coating modification device according to claim 4, characterized in that, The separation structure (1032) is fixed at the connection between the first cone-angle acceleration section (1012) and the second cone-angle acceleration section (1013).

6. The nano-coating modification device according to claim 4, characterized in that, The static mixer (103) further includes a conical shroud (1033), which is connected to the outer edge of the end face of the partition structure (1032) away from the guide vane (1031). The axial dimensions of the two ends of the conical shroud (1033) are respectively matched with the outer diameter of the partition structure (1032) and the inner diameter of the end of the second cone-angle acceleration section (1013) near the first cone-angle acceleration section (1012).

7. The nano-coating modification device according to claim 1, characterized in that, It also includes a gas supply and processing system (2), which includes a carrier gas mixing tank (201), a gas supply pipeline (202), and a high-speed vortex generator (206). The carrier gas mixing tank (201) is provided with a first outlet and at least two first inlets. The at least two first inlets are used to allow different types of inert gases to enter. One end of the gas supply pipeline (202) is connected to the first outlet of the carrier gas mixing tank (201), and the other end of the gas supply pipeline (202) is connected to the stabilization section (1011) through the high-speed vortex generator (206). The gas supply pipeline is used to convert the mixed gas formed by mixing different types of inert gases in the carrier gas mixing tank (201) into a high-speed airflow and introduce it into the stabilization section (1011).

8. The nano-coating modification device according to claim 7, characterized in that, The gas supply and processing system (2) includes multiple high-speed vortex generators (206), which are radially spaced around the stable section (1011).

9. The nano-coating modification device according to claim 7, characterized in that, The gas supply and processing system (2) further includes a vortex guide structure (207), which has a spiral groove. The vortex guide structure (207) is embedded and fixed in the high-speed vortex generator (206) to convert the high-speed airflow into a high-speed rotating airflow.

10. The nano-coating modification device according to claim 7, characterized in that, The gas supply and processing system (2) further includes a gas pressure reducing valve (204) and a mass flow controller (203). The gas pressure reducing valve (204) and the mass flow controller (203) are respectively connected to the gas supply pipeline (202). The gas pressure reducing valve (204) is used to reduce the pressure of the high-pressure mixed gas output from the carrier gas mixing tank (201) to a stable pressure gas. The mass flow controller (203) is used to monitor and control the flow rate of the stable pressure gas in the gas supply pipeline (202).

11. The nano-coating modification device according to claim 1, characterized in that, It also includes a material conveying system (3), which includes a screw feeder (301), a pneumatic conveyor (302) and a conveying pipe (303) connected in sequence. The screw feeder (301) is used to hold the matrix particles, and the pneumatic conveyor (302) is connected to the stabilizing section (1011) through the conveying pipe (303).

12. The nano-coating modification device according to claim 11, characterized in that, It also includes a waste gas treatment and recovery system (7), which includes a recovery component (701) for recovering the matrix particles and nano-coating material entrained in the unreacted waste gas generated in the recovery reaction stage of the stabilization section (1011) to the screw feeder (301); the recovery component (701) includes a first exhaust pipe, a recovery container, a recovery pipe and a discharge valve, the two ends of the first exhaust pipe are respectively connected to the stabilization section (1011) and the recovery container, the recovery container is provided with a first outlet, the first outlet of the recovery container is connected to the screw feeder (301) through the recovery pipe, and the discharge valve is connected between the recovery container and the screw feeder (301).

13. The nano-coating modification device according to claim 12, characterized in that, The waste gas treatment and recovery system (7) further includes a tail gas purification component (702). The recovery container is also provided with a second outlet. The tail gas purification component (702) includes a second exhaust pipe, an adsorption structure and a tail gas detection device. The second outlet of the recovery container is connected to the adsorption structure through the second exhaust pipe. The adsorption structure is provided with a third outlet. The tail gas detection device is installed at the third outlet of the adsorption structure. The tail gas detection device is used to monitor the tail gas concentration in the adsorption structure.

14. The nano-coating modification device according to any one of claims 1 to 13, characterized in that, It also includes a central control cabinet (8), a power supply device and a temperature control component. The power supply device is electrically connected to the temperature control component and is used to provide working power to the temperature control component. The temperature control component is in contact with the reaction chamber (101) and is used to regulate the internal temperature of the reaction chamber (101). The temperature control component includes a heating module, which includes multiple heating coils (5). The heating coils (5) are respectively installed on the outer peripheral walls of the stabilizing section (1011) and the conical acceleration section. The heating coils (5) are electrically connected to the output terminal of the power supply device, and the input terminal of the power supply device is electrically connected to the central control cabinet (8). The central control cabinet (8) is used to control the heating temperature of the heating coils (5) by adjusting the output power of the power supply device.

15. The nano-coating modification device according to claim 14, characterized in that, The temperature control component also includes a cooling module (6), which includes a liquid cooling container (602), an inlet pipe, a return pipe, a water pump, and a jacket (601). The jacket (601) is fitted onto the heating coil (5). The jacket (601) has a cavity structure and an inlet and a return port that communicate with the cavity structure. The liquid cooling container (602) is connected to the liquid inlet of the jacket (601) through the liquid inlet pipe, and the liquid return port of the jacket (601) is connected to the liquid cooling container (602) through the liquid return pipe; the water pump is connected between the liquid cooling container (602) and the liquid inlet.

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