A reaction kettle for producing isothiazolone compounds

Abstract

This utility model discloses a reaction vessel for producing isothiazolinone compounds, comprising a vessel body with a material inlet and a solvent inlet; a stirring mechanism is provided inside the vessel body, the stirring mechanism including a hollow stirring shaft rotatably disposed inside the vessel body, multiple hollow stirring blades connected to the hollow stirring shaft, and the hollow stirring shaft connected to a stirring motor located at the top of the vessel body; the bottom of the hollow stirring shaft is connected to a first heat exchange medium storage tank via a rotary joint; multiple guide grooves are provided at the ends of the hollow stirring blades, and multiple grooves are provided on the surface of the hollow stirring blades; multiple baffles are provided on the inner wall of the vessel body, and elastic silicone is provided on the sides of the baffles. This reaction vessel has high heat exchange efficiency, allowing for sufficient contact and reaction between materials, resulting in high reaction efficiency and improved raw material utilization.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to a reaction vessel for producing isothiazolinone compounds. Background Technology

[0002] Isothiazolinones, as a new generation of environmentally friendly antibacterial agents, possess broad-spectrum antibacterial properties. The active heterocycles in their molecular structure can target the genetic material of microorganisms, achieving efficient inactivation by disrupting DNA molecular structure. These bactericides retain excellent antibacterial efficacy while also exhibiting superior biodegradability, leaving no harmful residues during use, and demonstrating good safety and stability. Based on these advantages, isothiazolinones have been applied in multiple fields, such as effectively controlling microbial growth in oil extraction and maintaining the cleanliness of production systems in the paper industry. Furthermore, the applications of isothiazolinones extend to agricultural chemical research and development, metalworking fluid corrosion prevention, textile printing and dyeing processes, leather manufacturing, and industrial ink formulation, fully demonstrating their cross-sectoral applicability as multifunctional bactericides.

[0003] Currently, the main production method for isothiazolinone compounds is through cyclization reactions. Specifically, N,S-acetal ketone compounds are used as raw materials, undergoing self-cyclization reactions in the presence of an oxidant to generate isothiazolinone compounds. These reactions require reaction vessels, but current reaction vessels have simple structures, low heat exchange efficiency, and poor mixing of materials, resulting in low raw material utilization and increased energy consumption. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a reaction vessel for producing isothiazolinone compounds, which has high heat exchange efficiency, allows for full contact and reaction between materials, and improves the utilization rate of raw materials.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A reaction vessel for producing isothiazolinone compounds includes a vessel body with a material inlet and a solvent inlet. The vessel body is equipped with a stirring mechanism, which includes a hollow stirring shaft rotatably mounted within the vessel body. Multiple hollow stirring blades are connected to the hollow stirring shaft, which is connected to a stirring motor located at the top of the vessel body. A first heat exchange medium storage tank is connected to the bottom of the hollow stirring shaft via a rotary joint. Multiple guide grooves are provided at the ends of the hollow stirring blades, and multiple grooves are provided on the surface of the hollow stirring blades. Multiple baffles are provided on the inner wall of the vessel body, and elastic silicone is provided on the sides of the baffles.

[0007] Preferably, the outer side of the vessel body is provided with a jacket, and the jacket is respectively provided with a second heat exchange medium inlet and a second heat exchange medium outlet.

[0008] Preferably, the jacket is provided with a spiral baffle.

[0009] Preferably, the spiral baffle plate is provided with multiple turbulence holes.

[0010] Preferably, a temperature sensor is provided inside the vessel.

[0011] Preferably, the hollow stirring blade is provided with multiple auxiliary stirring blades.

[0012] Preferably, the auxiliary stirring blades are provided with turbulence-inducing teeth at their ends.

[0013] Due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] This invention provides a reaction vessel for producing isothiazolinone compounds. The first heat exchange system is formed by adding a heat exchange medium into the hollow stirring shaft and hollow stirring blades inside the vessel, which directly contacts the reactants for heat exchange. The second heat exchange system is formed by introducing a heat exchange medium into the jacket. The first and second heat exchange systems work together to effectively improve the heat exchange efficiency inside the vessel and ensure the efficient and smooth progress of the reaction.

[0015] The device has a spiral baffle plate inside the vessel jacket, and the spiral baffle plate has turbulence holes, which can not only generate turbulence, but also extend the flow path of the heat exchange medium and improve the heat exchange efficiency.

[0016] During the mixing process, the guide grooves at the ends of the hollow stirring blades in this device generate axial thrust, and micro-vortices are generated on the surface of the grooves. Combined with the baffles and the elastic silicone on the baffles, the laminar boundary layer is effectively broken, the mixing efficiency is improved, and the materials are mixed more evenly. The auxiliary stirring blades and the turbulence teeth can further improve the shearing efficiency, thereby improving the reaction efficiency.

[0017] The elastic silicone in this device can deform with fluid fluctuations, thereby preventing material deposition on its surface and improving raw material utilization. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1This is a structural schematic diagram of an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0021] Figure 3 for Figure 1 Enlarged structural diagram at point B;

[0022] In the diagram, 1. vessel body; 2. material inlet; 3. solvent inlet; 4. hollow stirring shaft; 5. hollow stirring blades; 6. stirring motor; 7. first heat exchange medium storage tank; 8. jacket; 9. second heat exchange medium inlet; 10. second heat exchange medium outlet; 11. guide channel; 12. groove; 13. baffle plate; 14. elastic silicone; 15. spiral baffle plate; 16. baffle hole; 17. temperature sensor; 18. auxiliary stirring blades; 19. baffle teeth. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example

[0025] like Figure 1-3 As shown in the figure, a reaction vessel for producing isothiazolinone compounds includes a vessel body 1, which has a material inlet 2 and a solvent inlet 3. A stirring mechanism is installed inside the vessel body 1, including a hollow stirring shaft 4 rotatably mounted within the vessel body 1. Multiple hollow stirring blades 5 are connected to the hollow stirring shaft 4, which is connected to a stirring motor 6 located at the top of the vessel body 1. The bottom of the hollow stirring shaft 4 is connected to a first heat exchange medium storage tank 7 via a rotary joint (not shown in the figure). A jacket 8 is provided on the outside of the vessel body 1, with a second heat exchange medium inlet 9 and a second heat exchange medium outlet 10 respectively. The internal circulating heat exchange formed by the hollow stirring blades 5 and the hollow stirring shaft 4, combined with the external circulating heat exchange of the jacket 8, works synergistically to effectively ensure the stability of the reaction temperature and the smooth progress of the reaction, making it suitable for the synthesis of isothiazolinone compounds.

[0026] like Figure 1 and Figure 3As shown, the hollow stirring blade 5 has multiple guide grooves 11 at its end and multiple grooves 12 on its surface; the inner wall of the vessel body 1 has multiple baffles 13, and the sides of the baffles 13 are provided with elastic silicone rubber 14. The combined arrangement of the guide grooves 11 at the end of the hollow stirring blade 5 and the surface grooves 12 can effectively form a three-dimensional stirring system. During the stirring process, the guide grooves 11 can generate radial fluid shear force, and the grooves 12 increase local turbulence, thereby enabling the materials to be fully mixed and reacted, improving reaction efficiency and raw material utilization. The baffles 13 on the inner wall of the vessel body 1 and the elastic silicone rubber 14 on the sides of the baffles 13 are complementary. The elastic silicone rubber 14 can adaptively deform with the fluid movement, eliminating dead zones in the stirring, while the baffles can generate vortices, making the liquid in the vessel body 1 more uniformly mixed and improving reaction efficiency.

[0027] Furthermore, in this embodiment, as Figure 1 and Figure 2 As shown, the jacket 8 is provided with a spiral baffle 15; the spiral baffle 15 is provided with a plurality of turbulence holes 16. The spiral baffle 15 can extend the heat exchange path within the jacket 8, and the spiral baffle 15 can generate secondary eddies through the turbulence holes 16, so that the heat exchange medium can have more sufficient contact with the vessel wall, thereby improving the heat exchange efficiency.

[0028] Furthermore, in this embodiment, a temperature sensor 17 is provided inside the vessel body 1, which can monitor the reaction temperature inside the vessel body 1 in real time to ensure the smooth progress of the reaction.

[0029] Furthermore, in this embodiment, as Figure 1 and Figure 3 As shown, the hollow stirring blade 5 is provided with multiple auxiliary stirring blades 18; the ends of the auxiliary stirring blades 18 are provided with turbulence-inducing teeth 19. The combined arrangement of the auxiliary stirring blades 18 and the turbulence-inducing teeth 19 can further promote material dispersion, ensure the full progress of the reaction, and improve the utilization rate of raw materials.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. 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 spirit or scope of the present invention. Therefore, the present invention 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 reaction vessel for producing isothiazolinone compounds, characterized in that: The device includes a vessel body, which has a material inlet and a solvent inlet; the vessel body is equipped with a stirring mechanism, which includes a hollow stirring shaft rotatably disposed within the vessel body, and multiple hollow stirring blades are connected to the hollow stirring shaft, which is connected to a stirring motor located at the top of the vessel body. The bottom of the hollow stirring shaft is connected to a first heat exchange medium storage tank via a rotary joint; the ends of the hollow stirring blades are provided with multiple guide grooves, and the surface of the hollow stirring blades is provided with multiple grooves; the inner wall of the vessel is provided with multiple baffles, and the sides of the baffles are provided with elastic silicone.

2. The reaction vessel for producing isothiazolinone compounds according to claim 1, characterized in that: The outer side of the vessel body is provided with a jacket, and the jacket is respectively provided with a second heat exchange medium inlet and a second heat exchange medium outlet.

3. The reaction vessel for producing isothiazolinone compounds according to claim 2, characterized in that: The jacket is equipped with a spiral baffle.

4. The reaction vessel for producing isothiazolinone compounds according to claim 3, characterized in that: The spiral baffle plate is provided with multiple turbulence holes.

5. The reaction vessel for producing isothiazolinone compounds according to claim 1, characterized in that: A temperature sensor is installed inside the reactor.

6. The reaction vessel for producing isothiazolinone compounds according to claim 1, characterized in that: The hollow stirring blade is equipped with multiple auxiliary stirring blades.

7. The reaction vessel for producing isothiazolinone compounds according to claim 6, characterized in that: The auxiliary stirring blades are provided with turbulence-inducing teeth at their ends.

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