A reaction kettle for producing ethyl propionate

Abstract

The utility model relates to the technical field of reaction kettle discloses a reaction kettle of production ethyl propionate, including kettle body, the kettle body top is provided with the kettle cover, the kettle cover inside fixedly connected with the feed pipe, the kettle cover top is provided with the motor, the motor output fixedly connected with the pivot, the pivot side wall is provided with the adjusting mechanism, the pivot outside is provided with the stirring vane, the kettle cover inside fixedly connected with the exhaust pipe, the exhaust pipe top is provided with quick -release mechanism, the adjusting mechanism includes the fixed peg and the recessed hole of opening in the pivot inside, the fixed peg side wall sliding connection is in the recessed hole inside. In the utility model, by pulling the fixed peg, makes the slip ring to drive the stirring vane and moves up and down along the pivot's axial direction, can according to the height of liquid level or the increase of material viscosity in the reaction process, the immersion depth and the action area of stirring vane are adjusted flexibly, not only has optimized the mass transfer heat transfer efficiency, also avoided the problem of local overheating and reaction uneven.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and in particular to a reaction vessel for producing ethyl propionate. Background Technology

[0002] Ethyl propionate, an important organic chemical raw material and solvent, is widely used in food flavorings, cosmetics, and pharmaceutical intermediates due to its rum-like fruity aroma. Its industrial production primarily involves the esterification reaction of propionic acid and ethanol under a catalyst. In this chemical conversion process, the reactor is the core equipment for material mixing, heat transfer, and chemical reaction; its structural design and operational efficiency directly affect the esterification reaction rate, conversion rate, and the purity and yield of the final product, ethyl propionate.

[0003] Existing reactors used for the production of ethyl propionate are mostly traditional jacketed stirred tanks, whose basic structure includes a tank body, a stirring device, and an external jacket. These reactors mix raw materials such as propionic acid and ethanol using the stirring device during production. However, existing reactors typically employ a fixed stirring structure, where the position of the stirring blades is fixed after installation and cannot be adjusted according to the reaction progress. In the early stages of the reaction when the liquid level is low, or in the later stages when the material viscosity increases, the fixed stirring blades struggle to effectively and uniformly agitate all materials. This not only leads to low mass and heat transfer efficiency, easily causing localized overheating or uneven reaction within the reactor, but also limits the intensity of fluid mixing due to the conventional stirring blade design. Therefore, a reactor for the production of ethyl propionate is proposed to address these problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a reaction vessel for producing ethyl propionate, which aims to improve the problem of the fixed stirring structure used in the prior art, where the position of the stirring blades is fixed after installation and cannot be adjusted according to the reaction process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A reactor for producing ethyl propionate includes a reactor body, a reactor cover at the top of the reactor body, a feed pipe fixedly connected inside the reactor cover, a motor at the top of the reactor cover, a rotating shaft fixedly connected to the output end of the motor, an adjustment mechanism on the side wall of the rotating shaft, stirring blades on the outside of the rotating shaft, an exhaust pipe fixedly connected inside the reactor cover, and a quick-release mechanism at the top of the exhaust pipe.

[0007] The adjusting mechanism includes a fixing bolt and a recessed hole inside the rotating shaft. The side wall of the fixing bolt is slidably connected to the inside of the recessed hole. A slip ring is slidably connected to the side wall of the rotating shaft. The fixing bolt is slidably connected inside the rotating shaft. A pull plate is fixedly connected to the side wall of the fixing bolt. A spring is sleeved on the outside of the fixing bolt. A stirring rod is fixedly connected to the side wall of the slip ring. The stirring blade is fixedly connected to the end of the stirring rod.

[0008] As a further description of the above technical solution:

[0009] The stirring blades are flat-topped cones, and multiple blades are provided.

[0010] As a further description of the above technical solution:

[0011] A limiting plate is fixedly connected to the side wall of the rotating shaft, and the slip ring is slidably connected to the side wall of the limiting plate.

[0012] As a further description of the above technical solution:

[0013] One end of the spring is fixedly connected to the side wall of the pull plate, and the other end of the spring is fixedly connected to the side wall of the slip ring.

[0014] As a further description of the above technical solution:

[0015] The quick-release mechanism includes a processing box and a box cover. The side walls of the processing box and the box cover are fixedly connected with claws and locking strips. The claws and locking strips are arranged alternately, and the claws and locking strips on the upper and lower sides engage with each other.

[0016] As a further description of the above technical solution:

[0017] The processing box is fixedly connected to the top of the vessel lid, and the exhaust pipe passes through the side wall of the processing box and extends into the interior.

[0018] As a further description of the above technical solution:

[0019] The processing box has a filter cartridge for filling activated carbon particles that is slidably connected inside, and a connecting frame is fixedly connected to the top of the filter cartridge.

[0020] As a further description of the above technical solution:

[0021] A sieve plate is fixedly connected inside the box cover, the top of the connecting frame is fixedly connected to the bottom of the sieve plate, and a handle is fixedly connected to the top of the box cover.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by pulling the fixing bolt, the slip ring drives the stirring blade to move up and down along the axis of the rotating shaft. The immersion depth and action area of ​​the stirring blade can be flexibly adjusted according to the liquid level or the increase in material viscosity during the reaction process. This not only optimizes the mass and heat transfer efficiency and avoids local overheating and uneven reaction, but also produces a stronger fluid mixing effect through the flat-topped conical stirring blade, ensuring full contact of reactants, thereby significantly improving the reaction rate and the yield of the final product, ethyl propionate.

[0024] 2. In this utility model, the quick-release mechanism connected to the end of the exhaust pipe uses a snap-fit ​​connection between the treatment box and the box cover with claws and clips, replacing the traditional bolt fastening. This allows operators to quickly open and close the box without tools, greatly shortening the downtime for replacing the activated carbon in the filter cartridge and improving maintenance convenience. At the same time, this device can effectively adsorb unreacted material vapors and by-products in the exhaust gas, which not only purifies the exhaust gas and avoids environmental pollution, but also recovers valuable materials and reduces production costs. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a reaction vessel for producing ethyl propionate according to the present invention.

[0026] Figure 2 This is a schematic diagram of the regulating mechanism of a reaction vessel for producing ethyl propionate according to the present invention.

[0027] Figure 3 for Figure 2 A larger image is shown in section A;

[0028] Figure 4 This is a schematic diagram of the quick-release mechanism of a reaction vessel for producing ethyl propionate according to the present invention.

[0029] Legend:

[0030] 1. Kettle body; 2. Kettle lid; 3. Feed pipe; 4. Motor; 5. Rotating shaft; 6. Limiting plate; 7. Slip ring; 8. Stirring rod; 9. Stirring blade; 10. Fixing bolt; 11. Pull plate; 12. Spring; 13. Exhaust pipe; 14. Processing box; 15. Box lid; 16. Claw; 17. Clamping strip; 18. Filter cartridge; 19. Connecting frame; 20. Handle; 21. Sieve plate; 22. Recessed hole. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1-3 This utility model provides an embodiment of a reactor for producing ethyl propionate, comprising a reactor body 1, a reactor lid 2 on the top of the reactor body 1, a feed pipe 3 fixedly connected inside the reactor lid 2 for conveying materials, a motor 4 on the top of the reactor lid 2, a rotating shaft 5 fixedly connected to the output end of the motor 4, and an adjustment mechanism on the side wall of the rotating shaft 5, allowing the operator to flexibly adjust the stirring intensity and action area according to changes in liquid level or reaction viscosity, thereby optimizing mass and heat transfer efficiency and avoiding local overheating or uneven reaction. Stirring blades 9 are provided outside the rotating shaft 5, and multiple stirring blades 9 are flat-topped conical in shape, generating stronger axial and radial flow during rotation, effectively promoting the vertical circulation and thorough mixing of materials, ensuring uniform contact of propionic acid, ethanol, and catalyst, thereby significantly improving the reaction rate and the yield of ethyl propionate. An exhaust pipe 13 is fixedly connected inside the reactor lid 2 to promptly discharge any gaseous byproducts or water vapor that may be generated during the reaction, maintaining the stability of the reactor interior. The stabilization of pressure shifts the chemical equilibrium toward ester formation, further improving the conversion rate. A quick-release mechanism is provided at the top of the exhaust pipe 13. The adjustment mechanism includes a fixing bolt 10 and a recess 22 inside the rotating shaft 5. The side wall of the fixing bolt 10 is slidably connected to the recess 22. A slip ring 7 is slidably connected to the side wall of the rotating shaft 5. A limit plate 6 is fixedly connected to the side wall of the rotating shaft 5. The slip ring 7 is slidably connected to the side wall of the limit plate 6. The limit plate 6 restricts the movement of the slip ring 7. The fixing bolt 10 is slidably connected inside the rotating shaft 5. A pull plate 11 is fixedly connected to the side wall of the fixing bolt 10. A spring 12 is sleeved on the outside of the fixing bolt 10. One end of the spring 12 is fixedly connected to the side wall of the pull plate 11, and the other end of the spring 12 is fixedly connected to the side wall of the slip ring 7. A stirring rod 8 is fixedly connected to the side wall of the slip ring 7. A stirring blade 9 is fixedly connected to the end of the stirring rod 8. By pulling the fixing bolt 10, the slip ring 7 can drive the stirring rod 8 and the stirring blade 9 to move up and down along the axial direction of the rotating shaft 5, thereby changing the immersion depth of the stirring blade 9 in the reactor.

[0033] Reference Figure 4The quick-release mechanism includes a treatment box 14 and a cover 15. Both the treatment box 14 and the cover 15 have fixedly connected claws 16 and locking strips 17 on their side walls. The claws 16 and locking strips 17 are staggered, and the claws 16 and locking strips 17 on the upper and lower sides engage with each other. This snap-fit ​​connection replaces the traditional bolt and flange connection, allowing operators to quickly open or lock the cover 15 without any tools, thus shortening downtime for maintenance and activated carbon granule replacement. The treatment box 14 is fixedly connected to the top of the vessel cover 2. The exhaust pipe 13 penetrates the side wall of the treatment box 14 and extends into the interior, ensuring that the gas discharged from the vessel can be guided. The gas is centrally processed in the treatment box 14 to avoid the disorderly emission of harmful gases. Inside the treatment box 14, there is a filter cartridge 18 for filling with activated carbon granules. When the exhaust gas containing unreacted material vapor or by-products passes through, the activated carbon can adsorb the organic molecules in it, thereby achieving the purpose of purifying the exhaust gas and recovering materials. A connecting frame 19 is fixedly connected to the top of the filter cartridge 18, and a sieve plate 21 is fixedly connected inside the box cover 15. This can support the filter cartridge 18 without obstructing the gas flow. The top of the connecting frame 19 is fixedly connected to the bottom of the sieve plate 21, and a handle 20 is fixedly connected to the top of the box cover 15, providing a stable point of leverage for the operator.

[0034] Working principle: When using this equipment, first separate the vessel body 1 from the vessel cover 2, and adjust the position of the stirring rod 8 and stirring blade 9 inside the vessel body 1 according to the amount of material added. During adjustment, the fixing bolt 10 is slid inside the slip ring 7 by pulling the pull plate 11. When the fixing bolt 10 is disengaged from the inside of the concave hole 22, the slip ring 7 is no longer restricted and can slide up and down outside the rotating shaft 5 under the restriction of the limiting plate 6. When it moves to a suitable height, release the pull plate 11. At this time, the spring 12 loses pressure and drives the pull plate 11 to reset, thereby inserting the fixing bolt 10 into the corresponding concave hole 22, thus fixing the current position of the slip ring 7 and completing the adjustment of the position of the stirring rod 8 and stirring blade 9.

[0035] Then, the vessel body 1 and the vessel cover 2 are closed, and the material is fed into the interior of the vessel body 1 through the feed pipe 3. The motor 4 is started to drive the rotating shaft 5 to rotate. Under the action of the stirring rod 8 and the stirring blade 9, the material is fully stirred to cause a chemical reaction. The gas generated during the reaction will move upward and enter the interior of the treatment box 14 through the exhaust pipe 13. It is then adsorbed by the activated carbon particles in the filter cartridge 18 to remove harmful substances from the gas. After adsorption is completed, it is then discharged outward. When the activated carbon particles in the front part of the filter cartridge 18 are saturated, the cover 15 can be deflected by turning the handle 20, so that the upper and lower claws 16 and the locking strips 17 separate, and the cover 15 is no longer restricted. Then, it can be lifted upward to remove the filter cartridge 18 from the interior of the treatment box 14, so that the activated carbon particles can be replaced.

[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 for producing ethyl propionate, comprising a vessel body (1), characterized in that: The top of the vessel body (1) is provided with a vessel cover (2), and a feed pipe (3) is fixedly connected inside the vessel cover (2). A motor (4) is provided on the top of the vessel cover (2), and a rotating shaft (5) is fixedly connected to the output end of the motor (4). An adjustment mechanism is provided on the side wall of the rotating shaft (5), and a stirring blade (9) is provided on the outside of the rotating shaft (5). An exhaust pipe (13) is fixedly connected inside the vessel cover (2), and a quick-release mechanism is provided on the top of the exhaust pipe (13). The adjustment mechanism includes a fixing bolt (10) and a recess (22) opened inside the rotating shaft (5). The side wall of the fixing bolt (10) is slidably connected inside the recess (22). A slip ring (7) is slidably connected to the side wall of the rotating shaft (5). The fixing bolt (10) is slidably connected inside the rotating shaft (5). A pull plate (11) is fixedly connected to the side wall of the fixing bolt (10). A spring (12) is sleeved on the outside of the fixing bolt (10). A stirring rod (8) is fixedly connected to the side wall of the slip ring (7). The stirring blade (9) is fixedly connected to the end of the stirring rod (8).

2. The reaction vessel for producing ethyl propionate according to claim 1, characterized in that: The stirring blade (9) is flat-topped and conical, and multiple blades are provided.

3. The reaction vessel for producing ethyl propionate according to claim 1, characterized in that: The rotating shaft (5) is fixedly connected to the side wall of the limiting plate (6), and the slip ring (7) is slidably connected to the side wall of the limiting plate (6).

4. The reaction vessel for producing ethyl propionate according to claim 1, characterized in that: One end of the spring (12) is fixedly connected to the side wall of the pull plate (11), and the other end of the spring (12) is fixedly connected to the side wall of the slip ring (7).

5. The reaction vessel for producing ethyl propionate according to claim 1, characterized in that: The quick-release mechanism includes a processing box (14) and a box cover (15). The side walls of the processing box (14) and the box cover (15) are fixedly connected with claws (16) and clips (17). The claws (16) and clips (17) are staggered, and the claws (16) and clips (17) on the upper and lower sides engage with each other.

6. The reaction vessel for producing ethyl propionate according to claim 5, characterized in that: The processing box (14) is fixedly connected to the top of the lid (2), and the exhaust pipe (13) passes through the side wall of the processing box (14) and extends into the interior.

7. The reaction vessel for producing ethyl propionate according to claim 6, characterized in that: The processing box (14) has a filter cartridge (18) for filling activated carbon particles that is slidably connected inside, and a connecting frame (19) is fixedly connected to the top of the filter cartridge (18).

8. The reaction vessel for producing ethyl propionate according to claim 7, characterized in that: A sieve plate (21) is fixedly connected inside the box cover (15), the top of the connecting frame (19) is fixedly connected to the bottom of the sieve plate (21), and a handle (20) is fixedly connected to the top of the box cover (15).

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