Efficient mixing and spraying device for colorants and acids

Abstract

The application discloses a coloring agent and acid efficient mixing and spraying device, which is used in the field of chemical equipment.The application comprises a pre-washing neutralizer tank, a mixing sprayer, a stirring motor, a double-layer stirring impeller and a tubular reaction tank; the pre-washing neutralizer tank is connected with the mixing sprayer; the stirring motor is connected with the double-layer stirring impeller; the pre-washing neutralizer tank, the mixing sprayer and the stirring motor are arranged outside the tubular reaction tank, and the double-layer stirring impeller is arranged in the tubular reaction tank.Through the mixing sprayer, the coloring agent and the acid can be quickly and uniformly sprayed and mixed, which helps to break the interfacial tension between materials, promotes the sufficient contact and reaction between materials, and thus improves the mixing efficiency.The double-layer stirring impeller structure can produce good stirring effect, improve the mixing uniformity of materials, prevent the precipitation or stratification of materials during the mixing process, and ensure the stability of the mixing quality.

Description

Technical Field

[0001] This application relates to the field of chemical equipment, and in particular to a high-efficiency mixing and spraying device for colorants and acids. Background Technology

[0002] In the production of ammonium phosphate, the mixing of colorant and acid is a crucial step. In traditional processes, acid and colorant are typically introduced separately into a tubular reactor, with mixing relying primarily on stirring within the tank. However, this stirring method is often insufficient, causing the colorant to float on top of the acid, preventing uniform mixing. This uneven mixing not only makes product quality unstable but also easily leads to deviations in the LAB value. If the LAB value deviation becomes too large, production must be interrupted to adjust process parameters or handle defective products. Frequent downtime disrupts production continuity, reduces overall production efficiency, increases production cycles, and results in unnecessary losses.

[0003] Due to the lack of an effective premixing mechanism, relying solely on the stirring action of the tubular reactor tank is insufficient to ensure complete and uniform mixing of the colorant and acid. This results in poor consistency of the LAB value of the ammonium phosphate product, failing to meet quality standards. Uneven mixing also leads to inhomogeneities in the product's chemical composition and physical properties, further reducing the product yield. The large number of defective products not only wastes raw materials and energy but also increases rework and scrap costs. In terms of production costs, the low product yield reduces the effective utilization of raw materials, increasing direct costs. Interruptions in production continuity lead to frequent equipment start-ups and shutdowns, exacerbating equipment wear and increasing maintenance costs. Furthermore, energy consumption continues during non-production periods, increasing energy costs. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a highly efficient mixing and spraying device for colorants and acids.

[0005] The technical solution provided in this application is described below: This application provides a high-efficiency mixing and spraying device for colorants and acids, including: a pre-washing and neutralizing tank, a mixing sprayer, a stirring motor, a double-layer stirring impeller, and a tubular reaction tank; The pre-wash neutralizer tank is connected to the mixing jet; The stirring motor is connected to the double-layer stirring impeller; The pre-washing neutralizer tank, the mixing jet, and the stirring motor are located outside the tubular reaction tank, while the double-layer stirring impeller is located inside the tubular reaction tank.

[0006] Optionally, the pre-wash neutralizer tank includes: a pre-washer tank, a first connection port, and a second connection port; The pre-washer tank is provided with the first connection port at one end and the second connection port at the other end; The first connector is connected to the colorant tube, and the second connector is connected to the acid tube.

[0007] Optionally, the mixing jet is disposed inside the pre-washer tank.

[0008] Optionally, the stirring motor includes a rotary motor and a main shaft, the main shaft being connected to the rotary motor, and the double-layer stirring impeller being disposed on the main shaft.

[0009] Optionally, the double-layer stirring impeller includes: a first stirring blade and a second stirring blade, wherein the first stirring blade and the second stirring blade are disposed on the main shaft.

[0010] Optionally, the first stirring blade and the second stirring blade are arranged in parallel. A fixed distance of 0.5m is provided between the first stirring blade and the second stirring blade; The distance between the second stirring blade and the bottom of the tubular reaction tank is 0.5m.

[0011] Optionally, the second stirring blade is rotated 45 degrees and then positioned on the main shaft, offset from the first stirring blade, to improve mixing efficiency.

[0012] Optionally, the mixing injector includes a high-pressure injector head and a venturi tube structure, wherein the high-pressure injector head is used to simultaneously inject colorant and acid into the throat of the venturi tube.

[0013] Optionally, a flow control valve is provided on the connecting pipe between the mixing injector and the pre-wash neutralizer tank to regulate the flow rate of colorant and acid entering the mixing injector.

[0014] Optionally, the inner surface of the tubular reaction tank is provided with an anti-corrosion coating, which is an epoxy anti-corrosion coating, used to prevent corrosion of the inside of the tubular reaction tank due to long-term contact with corrosive media.

[0015] As can be seen from the above technical solutions, this application has the following advantages: 1. The specially designed mixing injector enables rapid and uniform spraying and mixing of colorants and acids. This helps to break down interfacial tension between materials, promotes full contact and reaction between materials, and improves mixing efficiency.

[0016] 2. The double-layer impeller structure produces a good mixing effect, improves the uniformity of material mixing, effectively prevents sedimentation or stratification during the mixing process, and ensures the stability of the mixing quality. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a high-efficiency mixing spraying device for colorants and acids provided in this application; Figure 2 Schematic diagram of the prewash neutralizer tank and mixing jet provided in this application; Figure 3 This is a schematic diagram of the stirring motor and double-layer stirring impeller provided in this application. Detailed Implementation

[0018] In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and other terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.

[0019] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0020] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0021] Furthermore, the structures, proportions, sizes, etc., drawn in the accompanying drawings of this application are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0022] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Please see Figure 1 In an optional embodiment, this application provides a colorant and acid high-efficiency mixing spraying device, including: a pre-washing neutralizer tank 01, a mixing sprayer 02, a stirring motor 03, a double-layer stirring impeller 04, and a tubular reaction tank 05; The pre-wash neutralizer tank 01 is connected to the mixing jet 02; The stirring motor 03 is connected to the double-layer stirring impeller 04; The pre-washing neutralizer tank 01, the mixing jet 02, and the stirring motor 03 are located outside the tubular reaction tank 05, while the double-layer stirring impeller 04 is located inside the tubular reaction tank 05.

[0024] Before entering the mixing ejector 02, the colorant and acid are first treated in the pre-washing and neutralizing tank 01 to remove impurities and adjust the pH to a suitable range to ensure smooth subsequent mixing. The treated colorant and acid are then connected to the mixing ejector 02 via pipes. The mixing ejector 02 is designed with a Venturi structure; when the acid passes through the contraction section of the mixing ejector 02 at high speed, the flow rate increases and the pressure decreases, creating a negative pressure zone. At this time, the colorant is drawn into the throat of the mixing ejector 02 and initially mixed with the acid under high-speed agitation. The mixed material is further homogenized in the diffusion section and then sprayed at a high speed to the bottom of the tubular reaction tank 05. The material at the bottom of the tubular reaction tank 05 is strongly agitated by the double-layer impeller 04. The stirring motor 03 drives the double-layer impeller 04 to rotate, and the stirring blades shear, tumble, and circulate the material, breaking up local unevenness and promoting further uniform mixing of the colorant and acid. The double-layer impeller 04 ensures maximum mixing effect while preventing material deposition at the bottom of the tank. The tubular reaction tank 05 serves as the container for mixing and reaction, possessing sufficient volume to ensure thorough mixing and reaction of the materials within. The diameter and height of the tubular reaction tank 05 need to be adapted to production requirements and optimize the mixing effect. The thoroughly mixed and reacted materials are ultimately output from the tubular reaction tank 05 for subsequent production processes. Due to the significantly improved mixing uniformity, key indicators such as the LAB value of the product are enhanced, resulting in more stable product quality. Furthermore, by adjusting parameters such as the injection pressure of the mixing injector 02 and the rotation speed of the stirring motor 03, the mixing process can be controlled to meet different production needs, further enhancing the adaptability and flexibility of the equipment.

[0025] As can be seen from the above embodiments, the beneficial effects of this solution are as follows: The design of the Venturi mixing injector 02 achieves high-speed agitation mixing of the colorant and acid, shortening the mixing time and improving mixing efficiency. Driven by the stirring motor 03, the double-layer stirring impeller 04 performs intense shearing, tumbling, and circulation of the material, further promoting the uniformity of mixing and making the mixing effect more significant. Improved mixing uniformity directly enhances key quality indicators such as the LAB value of the product, making the product quality more stable and reliable. Precise control of the mixing process avoids localized high or low concentrations caused by uneven mixing, thereby reducing product quality fluctuations and improving product consistency and pass rate. The improved mixing efficiency reduces the number of times materials are returned and repeated mixing, reducing the consumption of manpower and resources. Stable operation of the device reduces downtime due to malfunctions, increases the uptime rate, and thus reduces production costs. By adjusting parameters such as the injection pressure of the mixing injector 02 and the speed of the stirring motor 03, different production needs can be flexibly adapted, enhancing the adaptability and flexibility of the device. The design of the device makes operation simpler, easier to maintain and repair, and reduces operating difficulty and costs. The efficient mixing process reduces waste generation, which is beneficial to environmental protection and the sustainable use of resources.

[0026] Please see Figure 1 and Figure 2 In an optional embodiment, the pre-wash neutralizer tank 01 includes: a pre-washer tank 011, a first connection port 012, and a second connection port 013; The pre-washer tank 011 is provided with the first connection port 012 at one end and the second connection port 013 at the other end; The first connection port 012 is connected to the colorant tube, and the second connection port 013 is connected to the acid tube.

[0027] The pre-washer tank 011, as the core component of the pretreatment process, is used to initially treat the colorant and acid, removing impurities, adjusting the pH value, and ensuring the materials are in a good chemical state before entering the mixing injector 02. The colorant is introduced into the pre-washer tank 011 through the colorant pipe via the first connection port 012, and then into the pre-washer tank 011 for pretreatment. The acid is introduced into the pre-washer tank 011 through the acid pipe via the second connection port 013, and then into the pre-washer tank 011 for pretreatment. The colorant and acid are treated separately in the pre-washer tank 011 and are mixed in the subsequent mixing stage. The pre-washer tank 011 ensures sufficient contact and reaction of the materials to achieve the desired pretreatment effect. The pretreated colorant and acid are connected to the mixing injector 02 through pipes, where high-speed agitation mixing is achieved through a venturi structure, and the mixed material is sprayed to the bottom of the tubular reaction tank 05. The material sprayed to the bottom of the tubular reaction tank 05 is intensely agitated by the double-layer impeller 04. The stirring motor 03 drives the double-layer impeller 04 to rotate, shearing, tumbling, and circulating the material for uniform mixing. As a container for mixing and reaction, the tubular reaction tank 05 must ensure thorough mixing and reaction of the materials within it. The thoroughly mixed and reacted material is finally output from the tubular reaction tank 05 for subsequent production processes. Improved mixing uniformity can further enhance key quality indicators such as the LAB value of the product, resulting in more stable and reliable product quality.

[0028] As can be seen from the above embodiments, the beneficial effects of this solution are as follows: The pre-wash tank 011 allows the colorant and acid to be pretreated separately before entering the mixing jet 02, effectively removing impurities from the materials, adjusting the pH value, and providing a more stable chemical environment for subsequent mixing. This reduces the uneven mixing caused by differences in material properties during the mixing process, improving mixing efficiency and product quality. The pretreated colorant and acid undergo high-speed agitation mixing in the mixing jet 02, further improving mixing uniformity. The double-layer stirring impeller 04, driven by the stirring motor 03, performs strong shearing, tumbling, and circulation of the materials, ensuring maximum mixing effect. The improved mixing uniformity directly improves key quality indicators such as the LAB value of the product, making the product quality more stable and reliable. By precisely controlling the pretreatment and mixing processes, the phenomenon of excessively high or low local concentrations caused by uneven mixing is reduced, thereby reducing product quality fluctuations and improving product consistency and pass rate. The addition of the pretreatment step reduces the number of return materials and repeated mixing in the subsequent mixing process, reducing the consumption of manpower and resources. The improved mixing efficiency and increased uptime further reduced production costs and increased the company's economic benefits. Operation became simpler, easier to maintain and repair, reducing operational difficulty and costs. By adjusting parameters such as pretreatment conditions, the injection pressure of the mixing injector 02, and the speed of the stirring motor 03, the system can flexibly adapt to different production needs, enhancing its adaptability and flexibility. The efficient mixing process reduced waste generation, contributing to environmental protection and sustainable resource utilization. The addition of a pretreatment step further reduced the emission of harmful substances, meeting the requirements of green production and sustainable development.

[0029] Please see Figure 1 and Figure 2 In an optional embodiment, the mixing jet 02 is disposed inside the pre-washer tank 011.

[0030] The pre-wash tank 011 is designed with a specific jetting device to spray fluid at high speed into the tubular reaction tank 05. The sprayed fluid generates strong turbulence and shear force, which helps to remove impurities and preliminarily adjust its pH or chemical properties. A mixing jet 02 is located inside the pre-wash tank 011. When the pre-washed fluid flows out of the pre-wash tank 011, it directly enters the spraying area of ​​the mixing jet 02. The mixing jet 02 uses high pressure to mix the colorant and acid at high speed, ensuring that the two fluids are thoroughly mixed in a short time to form a homogeneous mixture. The mixed fluid is then transported to the tubular reaction tank 05 for further chemical reaction. Inside the tubular reaction tank 05, the mixed fluid undergoes a chemical reaction under specific temperature and pressure. A double-layer impeller 04, driven by a stirring motor 03, stirs and mixes the fluid to ensure a uniform reaction.

[0031] As can be seen from the above embodiments, the beneficial effects of this solution are as follows: By placing the mixing injector 02 directly inside the pre-washer tank 011, the colorant is ensured to mix with the acid immediately after preliminary washing, reducing the residence time and energy loss of the fluid during transmission, thereby improving the efficiency and speed of mixing. The pre-washer tank 011 can remove impurities from the colorant and adjust its pH value or chemical properties, providing better conditions for subsequent chemical reactions. This helps reduce the generation of by-products during the reaction process and improves the purity and quality of the product. Integrating the mixing injector 02 with the pre-washer tank 011 reduces the footprint and complexity of the equipment. This makes the entire device easier to install, maintain, and operate. By optimizing the mixing and reaction processes, energy consumption and waste are reduced. Reducing the fluid transmission time and energy loss in the pipeline, as well as increasing the reaction rate and product yield, helps to reduce overall energy consumption.

[0032] Please see Figure 1 and Figure 3 In an optional embodiment, the stirring motor 03 includes a rotary motor 031 and a main shaft 032, the main shaft 032 being connected to the rotary motor 031, and the double-layer stirring impeller 04 being disposed on the main shaft 032.

[0033] The double-layer stirring impeller 04 includes: a first stirring blade 041 and a second stirring blade 042, wherein the first stirring blade 041 and the second stirring blade 042 are disposed on the main shaft 032.

[0034] The first stirring blade 041 and the second stirring blade 042 are arranged in parallel. A fixed distance of 0.5m is provided between the first stirring blade 041 and the second stirring blade 042; The distance between the second stirring blade 042 and the bottom of the tubular reaction tank 05 is 0.5m.

[0035] The second stirring blade 042 is rotated 45 degrees and then positioned on the main shaft 032, offset from the first stirring blade 041, in order to improve mixing efficiency.

[0036] The rotary motor 031 receives power from an external power source, begins to rotate, and generates driving force, which is transmitted to the double-layer stirring impeller 04 via the main shaft 032, causing the impeller to rotate. The double-layer stirring impeller 04 consists of a first stirring blade 041 and a second stirring blade 042. The first stirring blade 041 is mounted on the main shaft 032, and the second stirring blade 042 is rotated 45° relative to the first stirring blade 041 and is mounted parallel to the main shaft 032, maintaining a fixed distance of 0.5m. When the main shaft 032 rotates, the first stirring blade 041 and the second stirring blade 042 rotate accordingly, intensely stirring and mixing the fluid in the tubular reaction tank 05. The second stirring blade 042 is mainly responsible for pushing the fluid at the bottom of the tank upward, forming an upward fluid flow; while the first stirring blade 041 is located above the first stirring blade 042, further shearing and mixing the fluid to ensure that the different components in the fluid can fully contact and react. Under the rotation of the double-layer impeller 04, the fluid in the tubular reaction tank 05 forms a complex flow pattern, including upward, downward, radial, and tangential flows, which helps to break up agglomerates in the fluid and promotes the uniform distribution of different components. Because there is a fixed distance of 0.5m between the first stirring blade 041 and the second stirring blade 042, and the second stirring blade 042 maintains a distance of 0.5m from the bottom of the tubular reaction tank 05, it helps to ensure that the fluid throughout the tank is effectively mixed, avoiding dead zones. During the mixing and stirring process, the rotational speed of the double-layer impeller 04 can be controlled by adjusting the rotational speed of the rotary motor 031, thereby adjusting the mixing intensity of the fluid.

[0037] As can be seen from the above embodiments, the beneficial effects of this solution are as follows: The combination of the double-layer impeller 04 enhances the stirring effect, allowing the fluid in the tubular reaction tank 05 to be mixed more fully and uniformly. The parallel arrangement of the first stirring blade 041 and the second stirring blade 042 with a fixed distance allows the fluid to form a complex flow pattern through agitation during the stirring process, promoting full contact and reaction between different components, thereby improving the reaction rate and product quality. By setting the distance between the first stirring blade 041 and the second stirring blade 042, and the distance between the second stirring blade 042 and the bottom of the tubular reaction tank 05, the flow path and velocity distribution of the fluid in the tank can be optimized, helping to reduce dead zones, improve mixing uniformity, and reduce energy consumption. The double-layer impeller 04 enables the stirring motor 03 to adapt to the mixing requirements of fluids with different viscosities and reaction rates. By adjusting the rotation speed of the rotary motor 031, the stirring intensity can be controlled to meet different process conditions and production requirements. The double-layer agitator impeller 04 is made of high-strength, corrosion-resistant materials, which can withstand greater mechanical stress and chemical corrosion, enhancing the durability and reliability of the equipment, extending its service life, and reducing maintenance costs.

[0038] In an optional embodiment, the mixing injector 02 includes a high-pressure injection head and a venturi tube structure, the high-pressure injection head being used to simultaneously inject colorant and acid into the throat of the venturi tube.

[0039] The mixing injector 02 is equipped with a high-pressure injection head that generates a high-pressure jet stream. During operation, the colorant and acid are simultaneously pumped into the injection system through the high-pressure injection head. The high-pressure injection head ensures that the colorant and acid are ejected in a high-speed, fine atomized form. A Venturi tube is a special pipe structure characterized by a narrowing throat region in the middle of the pipe. When fluid passes through the throat of the Venturi tube, the flow velocity increases due to the reduced cross-sectional area, while the pressure decreases, creating the "Venturi effect." When the colorant and acid are injected into the throat of the Venturi tube by the high-pressure injection head, they are sheared and driven by the high-speed airflow or liquid flow in the throat. Due to the Venturi effect, the high fluid velocity and low pressure in the throat region help to better disperse and mix the colorant and acid. Simultaneously, the fine atomized jet stream generated by the high-pressure injection head increases the surface area of ​​the colorant and acid, further promoting their mixing and reaction. The mixed fluid then flows out of the venturi tube outlet and into tubular reaction tank 05. During the outflow process, the mixed fluid may continue to be stirred or further mixed to ensure its homogeneity and stability.

[0040] As can be seen from the above embodiments, the beneficial effects of this solution are as follows: The high-pressure jet head can generate a high-speed, fine-atomized jet stream, enabling the colorant and acid to quickly and fully contact and mix. The throat region of the Venturi tube structure enhances the shearing and dispersion effect of the fluid, thereby accelerating the mixing process and increasing the reaction rate. The combination of the fine-atomized jet stream and the Venturi tube effect ensures the uniform distribution of colorant and acid during the mixing process, helping to reduce local concentration differences and improve product quality and consistency. Efficient mixing reduces mixing time and required power consumption, lowering production costs. Due to the high mixing uniformity, the scrap rate caused by uneven mixing can be reduced, further reducing production costs. The mixing jet 02 can handle different types and concentrations of colorants and acids, suitable for various mixing needs.

[0041] In an optional embodiment, a flow control valve is provided on the connecting pipe between the mixing injector 02 and the prewash neutralizer tank 01 to regulate the flow rate of colorant and acid entering the mixing injector 02.

[0042] A flow control valve is used to regulate the flow rate of colorant and acid entering the mixing ejector 02 according to production needs, ensuring that the colorant and acid are mixed in the correct ratio. The colorant and acid are stored in the pre-wash neutralizer tank 01 and then conveyed to the pipeline connected to the mixing ejector 02. When the raw materials enter the connecting pipeline, the flow control valve starts working, automatically adjusting the flow rate of colorant and acid according to the preset ratio and process requirements, ensuring that they enter the mixing ejector 02 in the correct proportion. The regulated colorant and acid flow enters the mixing ejector 02. Inside the mixing ejector 02, a high-pressure nozzle sprays the two raw materials at high speed and in a fine atomized form to the throat of the venturi tube. The venturi effect enhances the shearing and dispersion of the fluid, allowing the colorant and acid to mix rapidly and thoroughly. The mixed fluid flows out from the outlet of the venturi tube and enters the tubular reaction tank 05.

[0043] As can be seen from the above embodiments, the beneficial effects of this solution are as follows: The flow control valve can precisely regulate the flow rate of colorant and acid entering the mixing injector 02, ensuring that they are mixed in a predetermined ratio. This helps improve product quality and consistency, reduces quality problems caused by improper proportioning, reduces production interruptions and rework caused by incorrect proportioning, and further improves overall production efficiency. Flow control helps reduce raw material waste and lower production costs. The flow control valve enhances the stability and reliability of the device. Through real-time monitoring and feedback control, the flow rate can be adjusted in a timely manner, ensuring the continuity and stability of the production process. The mixing injector 02 system combined with the flow control valve can adapt to different production needs and proportioning requirements. The flow control valve typically adopts a standardized design, making it easy to install, maintain, and replace.

[0044] In an optional embodiment, the inner surface of the tubular reaction tank 05 is provided with an anti-corrosion coating, which is an epoxy anti-corrosion coating, used to prevent corrosion of the inside of the tubular reaction tank 05 due to long-term contact with corrosive media.

[0045] Epoxy anti-corrosion coatings use epoxy resin as the main film-forming substance, exhibiting excellent adhesion and chemical corrosion resistance. The curing agent reacts chemically with the epoxy resin, causing the coating to cure and form a tough film. After applying the epoxy anti-corrosion coating to the inner surface of the tubular reaction tank 05, a specific curing process allows the epoxy resin in the coating to react chemically with the curing agent, forming a robust coating. This coating forms strong chemical bonds with the metal surface of the tubular reaction tank 05, exhibiting excellent adhesion and resisting peeling. The epoxy anti-corrosion coating isolates the interior of the tubular reaction tank 05 from direct contact with corrosive media, reducing the likelihood of corrosion. The coating possesses high electrical insulation properties, reducing the electrode potential difference on the metal surface and slowing down the electrochemical corrosion reaction. During the curing process, the coating forms a hard, acid- and alkali-resistant oxide film, resisting the erosion of the metal surface by acidic substances. The application of epoxy anti-corrosion coatings significantly improves the corrosion resistance of the tubular reaction tank 05 and extends its service life.

[0046] As can be seen from the above embodiments, the beneficial effects of this solution are as follows: The robust coating formed by the epoxy anti-corrosion coating can effectively isolate corrosive media, such as acid and alkali solutions, salt spray, etc., from erosion of the inner surface of the tubular reaction tank 05. This significantly improves the corrosion resistance of the reaction tank, extends the service life of the equipment, and reduces downtime maintenance and replacement costs caused by corrosion. The smooth coating surface is not prone to material retention and scaling, helping to keep the inside of the tubular reaction tank 05 clean. This not only improves production efficiency but also reduces equipment blockage and failures caused by material retention. The presence of the anti-corrosion coating reduces weak points in the equipment caused by corrosion, enhancing the overall structural stability of the equipment. This helps prevent safety accidents caused by equipment breakage or leakage, improving the safety of the production environment. The epoxy anti-corrosion coating has excellent wear resistance and weather resistance, reducing the need for coating peeling and repair due to wear and aging. This reduces equipment maintenance costs and production losses caused by downtime maintenance. The clean and smooth surface maintained by the coating facilitates uniform mixing and reaction of materials in the reaction tank. This improves production efficiency and also helps to improve product quality and consistency. Epoxy anti-corrosion coatings typically have low volatile organic compound (VOC) content, meeting environmental protection requirements. The long lifespan of the coating reduces waste generated from frequent equipment replacements, contributing to sustainable production and environmental goals.

[0047] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-efficiency mixing and spraying device for colorant and acid, characterized in that, include: Pre-wash neutralizer tank, mixing jet, stirring motor, double-layer stirring impeller and tubular reaction tank; The pre-wash neutralizer tank is connected to the mixing jet; The stirring motor is connected to the double-layer stirring impeller; The pre-washing neutralizer tank, the mixing jet, and the stirring motor are located outside the tubular reaction tank, while the double-layer stirring impeller is located inside the tubular reaction tank.

2. The colorant and acid high-efficiency mixing and spraying device according to claim 1, characterized in that, The pre-wash neutralizer tank includes: a pre-washer tank, a first connection port, and a second connection port; The pre-washer tank is provided with the first connection port at one end and the second connection port at the other end; The first connector is connected to the colorant tube, and the second connector is connected to the acid tube.

3. The colorant and acid high-efficiency mixing and spraying device according to claim 2, characterized in that, The mixing jet is located inside the pre-washer tank.

4. The colorant and acid high-efficiency mixing and spraying device according to claim 1, characterized in that, The stirring motor includes a rotary motor and a main shaft, the main shaft being connected to the rotary motor, and the double-layer stirring impeller being mounted on the main shaft.

5. The colorant and acid high-efficiency mixing and spraying device according to claim 4, characterized in that, The double-layer stirring impeller includes a first stirring blade and a second stirring blade, wherein the first stirring blade and the second stirring blade are disposed on the main shaft.

6. The colorant and acid high-efficiency mixing and spraying device according to claim 5, characterized in that, The first stirring blade and the second stirring blade are arranged parallel to each other; A fixed distance of 0.5m is provided between the first stirring blade and the second stirring blade; The distance between the second stirring blade and the bottom of the tubular reaction tank is 0.5m.

7. The colorant and acid high-efficiency mixing and spraying device according to claim 6, characterized in that, The second stirring blade is rotated 45 degrees and then positioned on the main shaft, offset from the first stirring blade, in order to improve mixing efficiency.

8. The colorant and acid high-efficiency mixing and spraying device according to claim 1, characterized in that, The mixing injector includes a high-pressure injector head and a venturi tube structure, wherein the high-pressure injector head is used to simultaneously inject colorant and acid into the throat of the venturi tube.

9. The colorant and acid high-efficiency mixing and spraying device according to claim 1, characterized in that, A flow control valve is installed on the connecting pipe between the mixing injector and the pre-wash neutralizer tank to regulate the flow rate of colorant and acid entering the mixing injector.

10. The colorant and acid high-efficiency mixing and spraying device according to claim 1, characterized in that, The inner surface of the tubular reaction tank is provided with an anti-corrosion coating, which is an epoxy anti-corrosion coating used to prevent corrosion of the inside of the tubular reaction tank due to long-term contact with corrosive media.

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