Esterification reaction kettle

Abstract

The utility model relates to the technical field of chemical reaction kettles, in particular to an esterification reaction kettle which comprises a kettle body, a plurality of feeding assemblies are arranged on a top cover of the kettle body, each feeding assembly comprises a feeding port of a conical structure, a detachable sealing cover is arranged at the top of each feeding port, the bottom of each feeding port is communicated with the inner side of the kettle body, and the bottom of each feeding port is communicated with the inner side of the kettle body. A stirring device is arranged on the kettle body and comprises a stirring rod and a stirring paddle. The problems of large loss of raw materials and auxiliary materials, high energy consumption and high production cost in the esterification reaction process can be solved.

Description

Technical Field

[0001] This utility model relates to the field of chemical reaction vessel technology, specifically an esterification reaction vessel. Background Technology

[0002] Polyesterification of organic compounds includes continuous polymerization and batch polymerization. Continuous polymerization refers to a continuous polymerization reaction with a continuous input of raw materials and a continuous output of products. Batch polymerization refers to a polymerization reaction carried out in batches, where a series of operations such as feeding, reaction, and discharge are completed in one batch before the next batch begins. In existing batch polymerization technologies, raw materials and auxiliary materials are usually added to a slurry tank in a certain proportion, mixed evenly to form a slurry, and then pumped to an esterification reactor for reaction, thereby improving the mixing efficiency of raw materials and auxiliary materials. However, this preparation method has high equipment investment, high energy consumption, and high production costs. Especially in small-batch production, the loss of raw materials and auxiliary materials is significant as they pass through the slurry tank, conveying pipelines, and pumps into the esterification reactor, further increasing production costs. Utility Model Content

[0003] This invention provides an esterification reactor that can solve the problems of high raw material and auxiliary material loss, high energy consumption, and high production costs during the esterification process.

[0004] This application provides the following technical solution:

[0005] An esterification reactor includes a reactor body, a top cover of which is provided with a plurality of feeding components, each feeding component including a conical inlet, the top of which is provided with a removable sealing cap, the bottom of which is connected to the inside of the reactor body, and a stirring device provided on the reactor body, the stirring device including a stirring rod and a stirring paddle.

[0006] Beneficial Effects: The reactor body is equipped with multiple feeding components, meeting the needs for separate and precise feeding of various raw materials in the esterification reaction. Different raw materials can be added to the reactor body in specific proportions and sequences through their respective feeding ports, ensuring the high efficiency and precision of the esterification reaction, and contributing to improved product quality and yield. The conical structure of the feeding port facilitates smooth material entry into the reactor body, reducing blockages and residues, and minimizing material waste. The removable top sealing cap ensures convenient operation during the feeding process while guaranteeing a tight seal during the reaction. The stirring rod and impeller ensure thorough mixing of materials, improving reaction uniformity and efficiency. Compared to existing technologies, this technical solution features a simple overall design, eliminating the need for slurry tanks, conveying pipelines, and pumps, resulting in low material loss, low energy consumption, and effectively reduced production costs, making it suitable for industrial production.

[0007] Furthermore, the bottom of the feed inlet of the feeding assembly is provided with a feed pipe that extends obliquely toward the center inside the vessel.

[0008] Beneficial effects: The angled feed pipe guides materials directly to the center of the reactor, which is especially beneficial when loading powdery solid materials. It effectively prevents dust from flying up when materials fall freely from a height, reducing material loss. Directly conveying powdery solid materials to the center of the reactor facilitates rapid and uniform mixing by the agitator, improving reaction efficiency. This is particularly suitable for reactions requiring high mixing uniformity.

[0009] Furthermore, the distance between the discharge end of the feed pipe and the top of the inner side of the vessel is less than or equal to 1 / 3 of the height of the inner side of the vessel.

[0010] Beneficial effects: During esterification, ensuring the feed pipe is always above the reaction solution avoids affecting the reaction and also ensures the service life of the equipment.

[0011] Furthermore, the feed inlet of the feeding assembly is tilted outward.

[0012] Beneficial effects: The outward-sloping feed inlet makes it easier for operators to pour materials in, reducing spillage or splashing and improving operational convenience.

[0013] Furthermore, the feeding assembly includes a feeding hopper, the upper end of which is a conical section corresponding to the conical structure of the feeding port, and the lower end is a cylindrical section.

[0014] Beneficial effects: The combination of the feed hopper and the feed inlet improves the applicability of the feeding components and ensures material loading efficiency.

[0015] Furthermore, the stirring rod of the stirring device extends out of the vessel body and connects to the driving device.

[0016] Beneficial effects: The stirring rod extends out of the vessel body and connects to the drive device through a sealing device, which can effectively ensure the sealing of the vessel body and make operation more convenient.

[0017] Furthermore, the stirring rod of the stirring device is provided with a scraper that is opposite to the inner side wall of the vessel.

[0018] Beneficial effects: The scraper allows materials near the vessel wall to re-enter the mixing zone, improving overall mixing uniformity, ensuring that materials fully participate in the reaction, and improving reaction efficiency and product quality.

[0019] Furthermore, the stirring paddle of the stirring device has multiple layers along the extension direction of the stirring rod.

[0020] Beneficial effects: The multi-layered stirring paddle can stir the materials in the vessel at different heights, so that the materials can be fully mixed in the vertical direction as well.

[0021] Furthermore, a partition is provided on the inner side wall of the vessel, and the partition has multiple through holes.

[0022] Beneficial effects: The presence of the partition allows the materials to mix more thoroughly, improving the uniformity of the reaction and thus making the esterification reaction more efficient. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of Embodiment 1 of the esterification reactor of this utility model.

[0024] Figure 2 This is a cross-sectional view of Example 2 of the esterification reactor of this utility model.

[0025] Figure 3 This is a cross-sectional view of Example 3 of the esterification reactor of this utility model.

[0026] Figure 4 This is a cross-sectional view of Example 4 of the esterification reactor of this utility model.

[0027] Figure 5 This is a cross-sectional view of Example 5 of the esterification reactor of this utility model. Detailed Implementation

[0028] The following detailed description illustrates the specific implementation method:

[0029] The markings in the accompanying drawings include: vessel body 1, first feed assembly 2, second feed assembly 3, feed inlet 4, sealing cover 5, feed pipe 6, stirring rod 7, stirring paddle 8, drive device 9, feed hopper 10, scraper 11, and partition 12.

[0030] Example 1

[0031] like Figure 1 As shown, an esterification reactor includes a reactor body 1. The top cover of the reactor body 1 is equipped with multiple feeding components, which can be adaptively configured according to the material characteristics. These components include a first feeding component 2 and a second feeding component 3. The first feeding component 2 includes a conical inlet 4 with a removable sealing cap 5 at the top. The bottom of the inlet 4 communicates with the inner side of the reactor body 1. The first feeding component 2 is suitable for filling liquid materials. The second feeding component 3 also includes a conical inlet 4 with a removable sealing cap 5 at the top. The bottom of the inlet 4 has a feed pipe 6 extending obliquely towards the center of the inner side of the reactor body 1. The bottom of the inlet 4 communicates with the inner side of the reactor body 1 through the feed pipe 6. The second feeding component 3 is suitable for filling liquid and solid materials, especially powdered materials. The length of the feed pipe 6 is set according to actual needs. The distance D between the discharge end of the feed pipe 6 and the top of the inner side of the vessel body 1 is less than or equal to 1 / 3 of the height H of the inner side of the vessel body 1. Preferably, the distance D between the discharge end of the feed pipe 6 and the top of the inner side of the vessel body 1 is equal to 1 / 4 of the height H of the inner side of the vessel body 1. One side of the sealing cover 5 is hinged to the feed inlet 4, and the other side is provided with a latch. A sealing ring is provided on the end face of the sealing cover 5 opposite to the feed inlet 4.

[0032] The vessel body 1 is equipped with a stirring device, which includes a stirring rod 7 and a stirring paddle 8. The stirring rod 7 has a stirring paddle 8 at one end located inside the vessel body 1, and the stirring rod 7 extends out of the vessel body 1 and is connected to a drive device 9, which can be a drive motor. The stirring paddle 8 has three layers along the extension direction of the stirring rod 7, and each layer has at least two stirring blades.

[0033] The method of use is as follows: When carrying out the esterification reaction, liquid materials are poured into the reactor body 1 through the feed port 4 of the first feed component 2, and powdered solid materials are poured into the middle of the inner side of the reactor body 1 through the feed port 4 and feed pipe 6 of the second feed component 3. After the feeding is completed, the feed port 4 is sealed with the sealing cap 5. The stirring rod 7 is driven by the driving device 9 to drive the stirring paddle 8 to rotate and mix the materials. After the materials are mixed evenly, the reaction is carried out according to the requirements of the esterification reaction, such as heating.

[0034] Example 2

[0035] like Figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the feed inlet 4 of the feeding assembly is inclined outward. The feeding assembly includes a feed hopper 10, the upper end of which is a conical section corresponding to the conical structure of the feed inlet 4, and the lower end is a cylindrical section. In use, the feed hopper 10 is placed inside the feed inlet 4, with the conical section of the feed hopper 10 fitting snugly against the feed inlet 4, ensuring that the feed hopper 10 is stably installed in the feed inlet 4. This prevents the feed hopper 10 from shaking during material feeding, which could lead to material spillage, pollution of the surrounding environment, and ensure the safety of operators.

[0036] Example 3

[0037] like Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that the stirring rod 7 of the stirring device is provided with a scraper 11 opposite to the inner wall of the vessel body 1. The scraper 11 is fixedly connected to the stirring rod 7 by welding or bolts.

[0038] Example 4

[0039] like Figure 4 As shown, the difference between this embodiment and Embodiment 3 is that the stirring paddle 8 is a spiral stirring paddle.

[0040] Example 5

[0041] like Figure 5As shown, the difference between this embodiment and Embodiment 1 is that a baffle 12 is provided on the inner wall of the vessel body 1. The baffle 12 has a conical structure and is located between the feeding assembly and the stirring device, dividing the inner side of the vessel body 1 into two chambers: the upper chamber for premixing materials and the lower chamber for stirring and reaction. The baffle 12 has multiple through holes. The material enters the premixing chamber through the feeding device for premixing. For example, if powdered materials enter the premixing chamber, the baffle 12 can effectively prevent the powder from drifting around and adhering to the top and side walls of the inner side of the vessel body 1, preventing material loss. After premixing with the liquid material on the baffle 12, the material enters the lower stirring and reaction chamber, ensuring uniform mixing and sufficient reaction.

[0042] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An esterification reactor comprising a reactor body, characterized by, The top cover of the kettle body is provided with a plurality of feeding assemblies, the feeding assembly comprises a conical feeding port, the top of the feeding port is provided with a detachable sealing cover, the bottom of the feeding port is communicated with the inside of the kettle body, the kettle body is provided with a stirring device, the stirring device comprises a stirring rod and a stirring paddle; the feeding assembly comprises a feeding hopper, the upper end of the feeding hopper is a conical section corresponding to the conical structure of the feeding port, and the lower end is a cylindrical section.

2. The esterification reactor of claim 1, wherein: The bottom of the feeding port of the feeding assembly is provided with a feeding pipe extending obliquely to the center of the inside of the kettle body.

3. The esterification reactor of claim 2, wherein: The distance between the discharge end of the feeding pipe and the top of the inside of the kettle body is less than or equal to 1 / 3 of the height of the inside of the kettle body.

4. The esterification reactor of claim 1, wherein: The feeding port of the feeding assembly is inclined outward.

5. The esterification reactor of claim 1, wherein: The stirring rod of the stirring device extends out of the kettle body and is connected with the driving device.

6. The esterification reactor of claim 1, wherein: The stirring rod of the stirring device is provided with a scraper opposite to the inner wall of the kettle body.

7. The esterification reactor of claim 1, wherein: The stirring paddle of the stirring device is provided with multiple layers along the extension direction of the stirring rod.

8. The esterification reactor of claim 1, wherein: The inner wall of the kettle body is provided with a partition plate, and the partition plate is provided with a plurality of through holes.

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