Reaction kettle for producing ethyl propionate with good reaction effect
By using a combination of propellers, anchor paddles, and internal stirring paddles to form a mixing and crushing assembly, the problem of uneven material mixing in the reactor was solved, achieving efficient mixing and uniform reaction in the ethyl propionate production process, thus improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN YONGNUO TECH CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-05-29
AI Technical Summary
In the production of ethyl propionate, existing reactors rely on a single stirring paddle to achieve uniform mixing of materials in different areas, resulting in incomplete reaction and unstable product quality.
The mixing assembly, which combines a propeller and an anchor-type impeller, along with an internal mixing blade and a baffle, enables axial and radial flow of materials, enhancing local mixing. The crushing assembly uses a motor-driven agitator to crush the solid catalyst, ensuring uniform particle size.
It improves the uniformity of material mixing and reaction efficiency, promotes the full progress of the reaction, and enhances the catalytic efficiency of the equipment and the stability of product quality.
Smart Images
Figure CN224293270U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reaction vessel technology, and in particular to a reaction vessel with good reaction effect for the production of ethyl propionate. Background Technology
[0002] This invention relates to a reaction vessel with good reaction performance for the production of ethyl propionate, belonging to the field of chemical synthesis equipment technology, and is particularly suitable for the process of preparing ethyl propionate by esterification of propionic acid and ethanol under the action of a catalyst. Ethyl propionate, as an important organic synthesis intermediate and solvent, is widely used in the food, fragrance, and coating industries, and its production efficiency and product quality directly affect the development of downstream industries. With the increasing demands for high efficiency and stability in the chemical industry, developing a reaction vessel that can enhance material mixing and promote complete reaction is of significant practical importance.
[0003] In existing technologies, reactors for producing ethyl propionate typically employ a single-blade agitator structure, such as paddle, turbine, or propeller agitators. These agitators primarily use an electric motor to drive the blades, utilizing the shearing and pushing action of the blades to achieve mixing. The underlying principle is that the liquid flow generated by the rotating blades creates a certain range of circulation within the reactor, thereby promoting contact and heat transfer between materials. Some reactors are also equipped with heating devices to regulate the esterification reaction rate by controlling the reaction temperature.
[0004] However, existing reactor stirring technologies generally suffer from a key problem: relying solely on a single stirring paddle makes it difficult to achieve effective and uniform mixing of materials in different areas within the reactor. This limitation is particularly pronounced in the production of ethyl propionate. Due to the limited range of action of a single stirring paddle, dead zones often appear within the reactor, causing materials at the bottom to settle due to gravity and fail to participate in the reaction in time; while materials at the top, due to untimely mixing, do not have sufficient contact with the catalyst, resulting in incomplete localized reactions. This uneven mixing not only reduces reaction efficiency but also leads to unstable product quality and increases the difficulty of subsequent separation and purification processes, severely restricting the economic and environmental benefits of ethyl propionate production. Therefore, this paper proposes a reactor with better reaction performance for the production of ethyl propionate to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a reaction vessel with good reaction effect for the production of ethyl propionate, aiming to improve the problem that the existing technology relies on only a single stirring paddle for stirring, which makes it difficult to achieve effective and uniform mixing of materials in different areas of the reaction vessel.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A reaction vessel for producing ethyl propionate with good reaction effect includes a vessel body, a feed cylinder fixedly connected to the top of the vessel body, a discharge cylinder fixedly connected to the bottom of the vessel body, a support frame fixedly connected to the side wall of the vessel body, a stirring assembly disposed inside the vessel body, and a crushing assembly disposed at the top of the vessel body; the stirring assembly includes a propeller and an anchor-shaped impeller, an inner liner fixedly connected inside the vessel body, a motor fixedly connected to the top of the vessel body, a rotating column fixedly connected to the output end of the motor, a rotating column rotatably connected to the side wall of the rotating column inside the inner liner, a base fixedly connected to the inside of the inner liner, a rotating column bottom rotatably connected to the inside of the base, a propeller fixedly connected to the inside of the rotating column side wall, an anchor-shaped impeller fixedly connected to the inside of the rotating column side wall, a toothed block fixedly connected to the side wall of the anchor-shaped impeller, an inner stirring impeller fixedly connected to the side wall of the rotating column, and a baffle fixedly connected to the inside of the inner liner.
[0008] As a further description of the above technical solution:
[0009] The crushing assembly includes a crushing box, a fixing plate is fixedly connected to the top of the vessel body, and the bottom of the crushing box is fixedly connected to the top of the fixing plate.
[0010] As a further description of the above technical solution:
[0011] The propeller is located on the upper side of the rotating column, the anchor-shaped paddle is located on the lower side of the rotating column, and the inner stirring paddle is located inside the anchor-shaped paddle.
[0012] As a further description of the above technical solution:
[0013] A valve is provided on the side wall of the discharge cylinder, and a heating tube is fixedly connected to the side wall of the inner liner. The heating tube is located between the inner liner and the vessel body.
[0014] As a further description of the above technical solution:
[0015] A second motor is fixedly connected inside the grinding box. A transmission rod is fixedly connected to the output end of the second motor. An agitator is fixedly connected to the side wall of the transmission rod.
[0016] As a further description of the above technical solution:
[0017] The crushing box is fixedly connected to a crushing chamber, and the crushing chamber is fixedly connected to a screen hopper. The transmission rod is rotatably connected to the side wall of the crushing chamber and the screen hopper. The agitator is located inside the screen hopper.
[0018] As a further description of the above technical solution:
[0019] A funnel is fixedly connected inside the grinding box, and one end of the funnel is fixedly connected inside the sieve hopper.
[0020] As a further description of the above technical solution:
[0021] A catalyst inlet pipe is fixedly connected to the top of the reactor body. One end of the catalyst inlet pipe is fixedly connected to the inside of the crushing chamber, and the other end of the catalyst inlet pipe is fixedly connected to the inside of the inner liner.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the propeller and the anchor-shaped paddle work together to achieve axial and radial flow of materials. The inner stirring paddle and toothed block enhance local mixing, and the baffle plate breaks laminar flow. Together, they improve the uniformity of material mixing and promote the full reaction. This achieves all-round and multi-level material mixing, which effectively improves the reaction effect. It solves the problem that traditional reactors only use a single stirring paddle to stir, which cannot effectively stir and mix the materials in different areas of the reactor, resulting in insufficient local reaction, bottom material deposition, and untimely mixing of upper materials. This improves the catalytic efficiency of the equipment.
[0024] 2. In this utility model, the crushing component is driven by a motor to rotate the stirring frame in the sieve bucket, thereby crushing the solid catalyst. This achieves the refinement of solid materials and the uniform dispersion of the catalyst, ensuring that the particle size of the material entering the reaction system is uniform. This solves the problem that when solid materials are directly added in a traditional reactor, it takes a long time to reach an effective reaction concentration, thus improving the reaction efficiency of the equipment. Attached Figure Description
[0025] Figure 1 This is a three-dimensional schematic diagram of a reaction vessel with good reaction effect for the production of ethyl propionate according to the present invention;
[0026] Figure 2 This is a schematic diagram of the inner liner of a reaction vessel with good reaction effect for the production of ethyl propionate according to this utility model;
[0027] Figure 3 This is a schematic diagram of the stirring assembly of a reaction vessel for producing ethyl propionate with good reaction effect, as proposed in this utility model.
[0028] Figure 4 This is a schematic diagram of the crushing component of a reaction vessel with good reaction effect for the production of ethyl propionate according to this utility model.
[0029] Figure 5 for Figure 4 Enlarged view of point A in the middle.
[0030] Legend:
[0031] 1. Kettle body; 2. Support frame; 3. Feed cylinder; 4. Discharge cylinder; 5. Motor 1; 6. Grinding box; 7. Inner liner; 8. Heating tube; 9. Valve; 10. Rotating column; 11. Propeller; 12. Anchor-type propeller; 13. Toothed block; 14. Internal stirring paddle; 15. Base; 16. Baffle plate; 17. Fixing plate; 18. Catalyst inlet pipe; 19. Funnel; 20. Motor 2; 21. Stirring frame; 22. Screen bucket; 23. Crushing chamber; 24. Transmission rod. Detailed Implementation
[0032] 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.
[0033] Reference Figures 1-3The present invention provides an embodiment of a reaction vessel for producing ethyl propionate with good reaction effect, comprising a vessel body 1, a feed cylinder 3 fixedly connected to the top of the vessel body 1 for conveying the materials participating in the reaction into the vessel body 1, facilitating the addition of materials and ensuring the continuous progress of the reaction, a discharge cylinder 4 fixedly connected to the bottom of the vessel body 1 for discharging the products after the reaction is completed from the vessel body 1, realizing the collection and subsequent processing of the products, a support frame 2 fixedly connected to the side wall of the vessel body 1 for supporting the vessel body 1, ensuring the stability of the vessel body 1 during use, preventing the vessel body 1 from tilting or collapsing, and ensuring the safe progress of the reaction, a stirring assembly is provided inside the vessel body 1, and a crushing assembly is provided at the top of the vessel body 1;The stirring assembly includes a propeller 11 and an anchor-type impeller 12. An inner liner 7 is fixedly connected inside the vessel body 1. The inner liner 7 is made of high-temperature resistant and corrosion-resistant stainless steel, serving to isolate the vessel body 1 from the reactants, protecting the vessel body 1 from corrosion, and withstanding temperature changes during the reaction process. This is common knowledge and will not be elaborated further. A motor 5 is fixedly connected to the top of the vessel body 1. A rotating column 10 is fixedly connected to the output end of the motor 5, providing power to the stirring assembly and driving its operation. The rotating column 10 is rotatably connected to the inner liner 7, transmitting the power from the motor 5 to the stirring components. The mixing component is capable of rotational stirring. A base 15 is fixedly connected inside the inner liner 7. The bottom of the rotating column 10 is rotatably connected inside the base 15 to ensure the stability of the rotating column 10 during rotation and prevent it from shaking or shifting. A propeller 11 is fixedly connected inside the side wall of the rotating column 10. An anchor-shaped paddle 12 is fixedly connected inside the side wall of the rotating column 10, and toothed blocks 13 are fixedly connected to the side wall of the anchor-shaped paddle 12 for disturbing the edge areas, preventing material from sticking to the inner wall while allowing it to react better with the catalyst. An inner stirring paddle 14 is fixedly connected to the side wall of the rotating column 10, and a baffle 16 is fixedly connected inside the inner liner 7 to disturb the material. The direction of material flow creates a more complex flow field during stirring, increasing the chances of collision and mixing between materials, thus improving the mixing uniformity and reaction efficiency. The propeller 11 is positioned above the rotating column 10 and propels the upper material within the vessel 1 through axial and radial flow, achieving rapid mixing and promoting full contact between materials. The anchor-shaped paddle 12 is positioned below the rotating column 10 and is used to stir the lower material within the vessel 1, particularly suitable for agitating the bottom elliptical inner wall, preventing material deposition at the bottom and side walls of the vessel 1, and ensuring uniform mixing. The inner stirring paddle 14 is positioned inside the anchor-shaped paddle 12. The anchor-shaped paddle 12 is used to further stir the material in the inner area of the vessel body 1. Working in synergy with the anchor-shaped paddle 12, it enhances the stirring effect on the material in the lower central area of the vessel body 1, ensuring thorough mixing of the material in this area. A valve 9 is installed on the side wall of the discharge cylinder 4 to control the opening and closing of the discharge cylinder 4, thereby controlling the discharge of reaction products. The discharge speed and time can be flexibly adjusted as needed. A heating pipe 8 is fixedly connected to the side wall of the inner liner 7. The heating pipe 8 is located between the inner liner 7 and the vessel body 1 and consists of a heating wire, an insulation layer, etc. By heating the inner liner 7, it provides the necessary temperature conditions for the reaction, achieving the effect of controlling the reaction temperature. Further details are omitted here.
[0034] Reference Figure 1 , Figure 4 and Figure 5The crushing assembly includes a crushing box 6, which houses the crushing components and provides space for the crushing process, protecting the crushing components and preventing material splashing during crushing. A fixing plate 17 is fixedly connected to the top of the vessel body 1, and the bottom of the crushing box 6 is fixedly connected to the top of the fixing plate 17 to support the crushing box 6 and ensure its stability during use. A motor 20 is fixedly connected inside the crushing box 6, and a transmission rod 24 is fixedly connected to the output end of the motor 20. The output end drives the transmission rod 24 to rotate, providing power to the crushing assembly and achieving the effect of driving the crushing assembly to operate. (Further details omitted). An agitator 21 is fixedly connected to the side wall of the transmission rod 24 to agitate the material in the screen hopper 22, causing the material to move continuously within the screen hopper 22, increasing the collision opportunities between the material and the inner wall of the crushing chamber 23, thereby achieving the crushing effect. The crushing box 6 is fixedly connected inside... The reactor has a crushing chamber 23, inside which a screen hopper 22 is fixedly connected. A transmission rod 24 is rotatably connected to the side wall of the crushing chamber 23 and the screen hopper 22. An agitator 21 is set inside the screen hopper 22 to screen the crushed material, filtering out the material that meets the particle size requirements, preventing insufficiently crushed material from entering the inner liner 7, and ensuring that the material entering the inner liner 7 has a uniform particle size, which is beneficial to improving the reaction effect. A funnel 19 is fixedly connected inside the crushing box 6, with one end of the funnel 19 fixedly connected inside the screen hopper 22, for conveying the material into the crushing assembly. A catalyst inlet pipe 18 is fixedly connected to the top of the reactor body 1, with one end of the catalyst inlet pipe 18 fixedly connected inside the crushing chamber 23 and the other end of the catalyst inlet pipe 18 fixedly connected inside the inner liner 7, for conveying the catalyst and the crushed material into the inner liner 7, so that the catalyst can be uniformly mixed with the reactants, improving the catalytic effect and reaction rate of the reaction.
[0035] Working principle: Raw materials enter the inner liner 7 inside the reactor body 1 through the feed cylinder 3. Solid materials or blocky catalysts enter through the funnel 19 inside the crushing box 6. Motor 20 drives the transmission rod 24, which drives the agitator 21 to rotate inside the screen hopper 22, crushing and agitating the materials. The crushed materials fall from the screen hopper 22 into the crushing chamber 23, and then are transported to the inner liner 7 through the catalyst inlet pipe 18 to mix with the main materials. The heating pipe 8 between the inner liner 7 and the reactor body 1 heats the inner liner 7, providing suitable temperature conditions for the synthesis reaction of ethyl propionate and promoting the esterification reaction. Motor 5 drives the rotating column 10 to rotate, which drives the propeller 11, anchor-shaped paddle 12 and inner stirring paddle 14 to rotate synchronously. The propeller 11 is located on the upper side of the rotating column 10, pushing the upper material. The material flows downwards, forming an axial circulation. The anchor-shaped paddle 12 is located below the rotating column 10, stirring the bottom material and increasing the shearing and dispersing effect of the material through the toothed blocks 13 on the side wall to prevent material deposition. The inner stirring paddle 14 further stirs the material inside the anchor-shaped paddle 12, working in synergy with the anchor-shaped paddle 12 to enhance the mixing effect of the material in the central area. The baffle 16 inside the inner liner 7 changes the flow direction of the material, forming turbulence, increasing the collision and contact opportunities between materials, improving the mixing uniformity and reaction efficiency. Under the action of the stirring components, the raw materials and catalyst are fully mixed and undergo esterification reaction in the temperature environment provided by the inner liner 7 to generate ethyl propionate. After the reaction is completed, the valve 9 is opened, and the product is discharged from the reactor 1 through the discharge cylinder 4 for subsequent separation and purification treatment.
[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A reaction vessel with good reaction effect for producing ethyl propionate, comprising a vessel body (1), characterized in that: The top of the vessel body (1) is fixedly connected to a feed cylinder (3), the bottom of the vessel body (1) is fixedly connected to a discharge cylinder (4), the side wall of the vessel body (1) is fixedly connected to a support frame (2), the inside of the vessel body (1) is equipped with a stirring assembly, and the top of the vessel body (1) is equipped with a crushing assembly. The stirring assembly includes a propeller (11) and an anchor-shaped paddle (12). An inner liner (7) is fixedly connected inside the vessel body (1). A motor (5) is fixedly connected to the top of the vessel body (1). A rotating column (10) is fixedly connected to the output end of the motor (5). The side wall of the rotating column (10) is rotatably connected to the inside of the inner liner (7). A base (15) is fixedly connected inside the inner liner (7). The bottom of the rotating column (10) is rotatably connected to the inside of the base (15). The propeller (11) is fixedly connected to the side wall of the rotating column (10). The anchor-shaped paddle (12) is fixedly connected to the side wall of the rotating column (10). A toothed block (13) is fixedly connected to the side wall of the anchor-shaped paddle (12). An inner stirring paddle (14) is fixedly connected to the side wall of the rotating column (10). A baffle plate (16) is fixedly connected inside the inner liner (7).
2. The reaction vessel with good reaction effect for producing ethyl propionate according to claim 1, characterized in that: The crushing assembly includes a crushing box (6), a fixing plate (17) is fixedly connected to the top of the vessel body (1), and the bottom of the crushing box (6) is fixedly connected to the top of the fixing plate (17).
3. The reaction vessel with good reaction effect for producing ethyl propionate according to claim 1, characterized in that: The propeller (11) is located on the upper side of the rotating column (10), the anchor-shaped paddle (12) is located on the lower side of the rotating column (10), and the inner stirring paddle (14) is located inside the anchor-shaped paddle (12).
4. The reaction vessel with good reaction effect for producing ethyl propionate according to claim 1, characterized in that: A valve (9) is provided on the side wall of the discharge cylinder (4), and a heating pipe (8) is fixedly connected to the side wall of the inner liner (7). The heating pipe (8) is located between the inner liner (7) and the vessel body (1).
5. A reaction vessel with good reaction effect for producing ethyl propionate according to claim 2, characterized in that: The grinding box (6) is fixedly connected to a motor (20), and the output end of the motor (20) is fixedly connected to a transmission rod (24). The side wall of the transmission rod (24) is fixedly connected to an agitator (21).
6. The reaction vessel with good reaction effect for producing ethyl propionate according to claim 5, characterized in that: The crushing box (6) is fixedly connected to a crushing chamber (23), and the crushing chamber (23) is fixedly connected to a screen hopper (22). The transmission rod (24) is rotatably connected to the side wall of the crushing chamber (23) and the screen hopper (22). The agitator (21) is set inside the screen hopper (22).
7. A reaction vessel with good reaction effect for producing ethyl propionate according to claim 6, characterized in that: A funnel (19) is fixedly connected inside the grinding box (6), and one end of the funnel (19) is fixedly connected inside the sieve hopper (22).
8. A reaction vessel with good reaction effect for producing ethyl propionate according to claim 6, characterized in that: A catalyst inlet pipe (18) is fixedly connected to the top of the vessel body (1). One end of the catalyst inlet pipe (18) is fixedly connected to the inside of the crushing chamber (23), and the other end of the catalyst inlet pipe (18) is fixedly connected to the inside of the inner liner (7).