High-efficiency esterification reaction device

Abstract

The utility model relates to the technical field of chemical production, and discloses a high-efficiency esterification reaction device which comprises a reaction kettle, a coil pipe assembly is fixedly arranged in the reaction kettle, the coil pipe assembly comprises an air inlet pipe fixedly arranged in the reaction kettle, and two ends of the air inlet pipe penetrate through the interior of the reaction kettle. Compared with a traditional device, according to the device disclosed by the utility model, hydrogen chloride gas generated by reaction of alcohols and phosphorus oxychloride in the reaction kettle is effectively wrapped and taken away by utilizing a gas increasing principle, and meanwhile, as the horizontal plane of a reaction substance in the reaction kettle is lower than the open hole of the exhaust pipe, the gas is ensured to be smoothly exhausted outwards through the open hole of the exhaust pipe and the exhaust pipe; the reaction balance is successfully broken, the reaction is promoted to be efficiently promoted in the forward direction, the product yield is greatly improved, the side reaction risk is reduced, and the whole device is simple in structure, exquisite in design, convenient to operate and extremely high in popularization value.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, and more specifically, to a high-efficiency esterification reaction device. Background Technology

[0002] Esterification plays a crucial role in the field of chemistry. Historically, early scientists discovered this remarkable reaction while exploring the transformation of organic compounds, opening a new chapter in organic synthesis. In modern industry, it is widely used in many sectors such as fragrances, coatings, and plastics. For example, the fragrance of perfumes we use every day largely comes from esters produced by esterification. From an academic research perspective, the mechanism of esterification is complex, involving the dehydration and condensation of acids and alcohols. In-depth research into it helps to reveal the deep mysteries of organic chemistry and promote theoretical progress. Whether in basic scientific research or practical production, esterification is of great significance.

[0003] In the synthesis of phosphate esters, alcohols and phosphorus oxychloride are usually used as reactants. The two react to produce phosphate esters and hydrogen chloride gas. However, a thorny problem is the solubility of hydrogen chloride gas in alcohols, especially alcohols with shorter carbon chains, where hydrogen chloride has a higher solubility. This makes it difficult to effectively remove the dissolved hydrogen chloride using conventional vacuum pumping methods. A large amount of hydrogen chloride remains in the reaction system, which not only occupies reaction space and hinders sufficient contact between reactants, but also reacts with the reactants in the reverse direction, making it difficult for the esterification reaction to proceed smoothly in the forward direction. Ultimately, this seriously drags down the overall efficiency of the esterification reaction, so improvements and optimizations are needed. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a high-efficiency esterification reaction device, which has the advantage of improving reaction efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency esterification reaction apparatus, comprising a reaction vessel, wherein a coil assembly is fixedly installed inside the reaction vessel, the coil assembly includes an inlet pipe fixedly installed inside the reaction vessel with both ends penetrating the interior of the reaction vessel, a gas path coil is fixedly connected to the bottom end of the inlet pipe, the gas path coil is coiled and interconnected with the inlet pipe, a coil air hole is opened on the outer surface of the gas path coil, an exhaust pipe is fixedly connected to the other end of the gas path coil and extends out of the reaction vessel and interconnected with the gas path coil, an exhaust pipe opening is opened on the outer surface of the exhaust pipe, and multiple exhaust pipe openings are opened, and a stirring assembly is fixedly installed on the top of the reaction vessel.

[0006] As a preferred embodiment of this utility model, the stirring assembly includes a stirring assembly fixedly installed on the top of the reaction vessel, the stirring assembly includes a motor bracket fixedly installed on the top of the reaction vessel, a motor fixedly installed inside the motor bracket, and the output end of the motor extending into the interior of the reaction vessel, a stirring rod fixedly installed at the end of the motor output shaft, a stirring frame fixedly installed at the other end of the stirring rod, and the stirring frame is located at the bottom side of the gas path coil, and an auger fixedly installed at the bottom side of the stirring frame.

[0007] As a preferred embodiment of this utility model, a discharge pipe is fixedly installed at the bottom of the reactor and is connected to the reactor. A valve is threadedly connected to the inner side of the discharge pipe, and a rotating disk is fixedly installed at the bottom of the valve.

[0008] As a preferred embodiment of this utility model, the ends of the intake pipe and the exhaust pipe are fixedly installed with connecting flanges, and the radius of the connecting flanges is larger than the opening radius of the intake pipe and the exhaust pipe.

[0009] As a preferred embodiment of this utility model, a jacket is fixedly fitted onto the outer surface of the reactor, and the jacket is in an annular shape that wraps around the outer surface of the reactor.

[0010] As a preferred embodiment of this utility model, an airtight sleeve is fixedly installed on the top of the reactor, and the output shaft of the motor passes through the airtight sleeve, which is in an annular shape.

[0011] As a preferred embodiment of this utility model, a support base is fixedly installed at the bottom of the reactor, and the support base is fixedly installed around the bottom of the reactor and extends through the jacket.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model utilizes a spiral gas path coil with evenly distributed pores on its outer surface. This effectively and uniformly blows gases that do not react with the reactants and products into the reaction vessel. As the gas volume increases, it carries away the hydrogen chloride gas generated from the reaction of alcohols and phosphorus oxychloride in the reaction vessel. Because the level of the reactants inside the reaction vessel is lower than the exhaust pipe opening, the gases that do not react with the reactants and products, along with the hydrogen chloride gas, are discharged outward through the exhaust pipe opening and exhaust pipe. Compared to traditional devices, this device effectively carries away the hydrogen chloride gas generated from the reaction of alcohols and phosphorus oxychloride in the reaction vessel by utilizing the principle of increasing gas volume. At the same time, because the level of the reactants in the reaction vessel is lower than the exhaust pipe opening, it ensures that the gas is smoothly discharged outward through the exhaust pipe opening and exhaust pipe, successfully breaking the reaction equilibrium and promoting the reaction forward and efficiently. This not only significantly improves the product yield and reduces the risk of side reactions, but also features a simple structure, ingenious design, and convenient operation, making it highly valuable for promotion.

[0014] 2. This invention uses a rotating stirring rack to drive the auger at the bottom. Because the outer surface of the stirring rack has a uniformly spaced perforated structure, alcohols and phosphorus oxychloride that have settled to the bottom after a long reaction are carried upwards by the centrifugal force of the auger and continue to react through the stirring rack. Compared to traditional devices, this invention effectively avoids the problem of incomplete reaction caused by reactants settling to the bottom, ensuring full contact between reactants, significantly improving reaction efficiency, reducing impurities caused by incomplete reaction, increasing product purity, reducing raw material waste, and bringing higher production efficiency. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional appearance structural diagram of the present utility model;

[0016] Figure 2 This is a schematic diagram of the jacket structure of this utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the present invention.

[0018] Figure 4 This is a schematic diagram of the gas coil structure of this utility model;

[0019] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Reactor; 2. Jacket; 3. Stirring assembly; 301. Motor bracket; 302. Motor; 303. Stirring rod; 304. Stirring frame; 305. Screwdriver; 4. Coil assembly; 401. Inlet pipe; 402. Gas circuit coil; 403. Exhaust pipe; 404. Coil vent; 405. Connecting flange; 406. Exhaust pipe opening; 5. Discharge pipe; 6. Valve; 7. Rotary disc; 8. Airtight sleeve; 9. Support base. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 5As shown, this utility model provides a high-efficiency esterification reaction device, including a reaction vessel 1. A coil assembly 4 is fixedly installed inside the reaction vessel 1. The coil assembly 4 includes an air inlet pipe 401 fixedly installed inside the reaction vessel 1, with both ends of the air inlet pipe 401 penetrating inside the reaction vessel 1. A gas path coil 402 is fixedly connected to the bottom end of the air inlet pipe 401, and the gas path coil 402 is coiled and interconnected with the air inlet pipe 401. A coil air hole 404 is opened on the outer surface of the gas path coil 402. An exhaust pipe 403 is fixedly connected to the other end of the gas path coil 402, and the exhaust pipe 403 extends out of the reaction vessel 1 and is interconnected with the gas path coil 402. An exhaust pipe opening 406 is opened on the outer surface of the exhaust pipe 403, and multiple openings are provided. A stirring assembly 3 is fixedly installed on the top of the reaction vessel 1.

[0023] When the operator connects to an external gas supply and blows the gas that does not react with the reactants and products into the gas path coil 402 through the inlet pipe 401, the gas will then flow into the gas path coil 402. The gas path coil 402 is coiled and has evenly distributed coil vents 404 on its outer surface, which can effectively and evenly blow the gas that does not react with the reactants and products into the reaction vessel 1. As the gas volume increases, it will carry away the hydrogen chloride gas produced by the reaction of alcohols and phosphorus oxychloride in the reaction vessel 1. Since the level of the reactants inside the reaction vessel 1 is lower than the exhaust pipe opening 406, the gas that does not react with the reactants and products, carrying the hydrogen chloride gas, is discharged to the outside through the exhaust pipe opening 406 and the exhaust pipe 403.

[0024] The gas path coil 402 is spiral-shaped with evenly distributed gas holes 404 on its outer surface, effectively blowing gases that do not react with the reactants and products into the reactor 1. As the gas volume increases, it carries away the hydrogen chloride gas generated by the reaction of alcohols and phosphorus oxychloride in the reactor 1. Since the level of the reactants inside the reactor 1 is lower than the exhaust pipe opening 406, the gases that do not react with the reactants and products, along with the hydrogen chloride gas, are discharged outward through the exhaust pipe opening 406 and exhaust pipe 403. Compared to traditional devices, this device utilizes the principle of increasing gas volume to effectively carry away the hydrogen chloride gas generated by the reaction of alcohols and phosphorus oxychloride in the reactor 1. At the same time, because the level of the reactants in the reactor 1 is lower than the exhaust pipe opening 406, it ensures that the gas is smoothly discharged outward through the exhaust pipe opening 406 and exhaust pipe 403, successfully breaking the reaction equilibrium and promoting the reaction forward and efficiently. This not only significantly improves the product yield and reduces the risk of side reactions, but also features a simple structure, ingenious design, and convenient operation, making it highly valuable for promotion.

[0025] The stirring assembly 3 includes a stirring assembly 3 fixedly installed on the top of the reactor 1. The stirring assembly 3 includes a motor bracket 301 fixedly installed on the top of the reactor 1. A motor 302 is fixedly installed inside the motor bracket 301, and the output end of the motor 302 extends into the reactor 1. A stirring rod 303 is fixedly installed at the end of the output shaft of the motor 302. A stirring frame 304 is fixedly installed at the other end of the stirring rod 303. The stirring frame 304 is located on the bottom side of the gas circuit coil 402. An auger 305 is fixedly installed on the bottom side of the stirring frame 304.

[0026] When the operator starts the motor 302, the output shaft will drive the stirring rod 303 to start rotating. When the stirring rod 303 starts rotating, it will drive the bottom stirring frame 304 to start rotating. When the stirring frame 304 starts rotating, it will drive the bottom auger 305 to start rotating. Because the outer surface of the stirring frame 304 has a uniformly spaced hollow structure, the alcohols and phosphorus oxychloride that have settled to the bottom after a long reaction are driven upward by the centrifugal force of the rotating auger 305 and continue to react through the stirring frame 304, thereby increasing the reaction efficiency.

[0027] The rotation of the stirring rack 304 will cause the auger 305 at the bottom to rotate. Because the outer surface of the stirring rack 304 has a uniformly spaced hollow structure, the alcohols and phosphorus oxychloride that have settled to the bottom after a long reaction are carried upward by the centrifugal force of the rotating auger 305 and continue to react through the stirring rack 304. Compared with traditional devices, this device effectively avoids the problem of incomplete reaction caused by the accumulation of reactants at the bottom, allowing the reactants to fully contact, significantly improving the reaction efficiency, reducing impurities caused by incomplete reaction, improving product purity, reducing raw material waste, and bringing higher efficiency to production.

[0028] Among them, the bottom of the reactor 1 is fixedly installed with a discharge pipe 5 and is connected to the reactor 1. The inner side of the discharge pipe 5 is threaded with a valve 6, and the bottom of the valve 6 is fixedly installed with a rotating disk 7.

[0029] Rotating the rotary disc 7 will cause the valve 6 to start rotating. When the valve 6 starts rotating, it will disengage from the discharge pipe 5, making it easier for workers to unload materials.

[0030] The intake pipe 401 and the exhaust pipe 403 are fixedly installed with connecting flanges 405, and the radius of the connecting flanges 405 is larger than the opening radius of the intake pipe 401 and the exhaust pipe 403.

[0031] Connecting flanges 405 are fixedly installed at the ends of the intake pipe 401 and the exhaust pipe 403, which facilitates the connection of external intake pipes and exhaust pipes.

[0032] The outer surface of the reactor 1 is fixedly fitted with a jacket 2, and the jacket 2 is in an annular shape that wraps around the outer surface of the reactor 1.

[0033] The jacket 2, being annular in shape, wraps around the outer surface of the reactor 1, effectively isolating it from external temperatures and reducing the impact of external temperature changes on the internal reaction of the reactor 1.

[0034] Among them, an airtight sleeve 8 is fixedly installed on the top of the reactor 1, and the output shaft of the motor 302 passes through the airtight sleeve 8, and the airtight sleeve 8 is in an annular shape.

[0035] By passing the output shaft of motor 302 through the airtight sleeve 8, which is in an annular shape, the airtightness of the passage can be effectively increased by the airtight sleeve 8 movably connecting the output shaft of motor 302.

[0036] Among them, a support base 9 is fixedly installed at the bottom of the reactor 1, and the support base 9 is fixedly installed around the bottom of the reactor 1 and passes through the jacket 2.

[0037] By fixing the support base 9 around the bottom of the reactor 1 and passing through the jacket 2, the stability of the entire device can be effectively increased and the physical impact of the external environment on the device can be reduced.

[0038] Working principle and usage process of this utility model:

[0039] When the operator connects to an external gas supply and blows the gas that does not react with the reactants and products into the gas path coil 402 through the inlet pipe 401, the gas will then enter the gas path coil 402. The gas path coil 402 is coiled and has evenly distributed coil vents 404 on its outer surface, which can effectively and evenly blow the gas that does not react with the reactants and products into the reaction vessel 1. As the gas volume increases, it will carry away the hydrogen chloride gas produced by the reaction of alcohols and phosphorus oxychloride in the reaction vessel 1. Since the level of the reactants inside the reaction vessel 1 is lower than the exhaust pipe opening 406, the gas that does not react with the reactants and products, carrying the hydrogen chloride gas, is discharged to the outside through the exhaust pipe opening 406 and the exhaust pipe 403.

[0040] When the operator starts the motor 302, the output shaft will drive the stirring rod 303 to start rotating. When the stirring rod 303 starts rotating, it will drive the bottom stirring frame 304 to start rotating. When the stirring frame 304 starts rotating, it will drive the bottom auger 305 to start rotating. Because the outer surface of the stirring frame 304 has a uniformly spaced hollow structure, the alcohols and phosphorus oxychloride that have settled to the bottom after a long reaction are driven upward by the centrifugal force of the rotating auger 305 and continue to react through the stirring frame 304, thereby increasing the reaction efficiency.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency esterification reaction apparatus, comprising a reaction vessel (1), characterized in that: The reactor (1) is fixedly installed with a coil assembly (4). The coil assembly (4) includes an air inlet pipe (401) fixedly installed inside the reactor (1) and both ends of the air inlet pipe (401) penetrate the interior of the reactor (1). The bottom end of the air inlet pipe (401) is fixedly connected to a gas path coil (402), and the gas path coil (402) is coiled and connected to the air inlet pipe (401). The outer surface of the gas path coil (402) is provided with a coil air hole (404). The other end of the gas path coil (402) is fixedly connected to an exhaust pipe (403), and the exhaust pipe (403) extends out of the reactor (1) and is connected to the gas path coil (402). The outer surface of the exhaust pipe (403) is provided with an exhaust pipe opening (406), and multiple openings are provided. The top of the reactor (1) is fixedly installed with a stirring assembly (3).

2. The high-efficiency esterification reaction apparatus according to claim 1, characterized in that: The stirring assembly (3) includes a stirring assembly (3) fixedly installed on the top of the reactor (1). The stirring assembly (3) includes a motor bracket (301) fixedly installed on the top of the reactor (1). A motor (302) is fixedly installed inside the motor bracket (301), and the output end of the motor (302) extends into the reactor (1). A stirring rod (303) is fixedly installed at the end of the output shaft of the motor (302). A stirring frame (304) is fixedly installed at the other end of the stirring rod (303), and the stirring frame (304) is located on the bottom side of the gas path coil (402). An auger (305) is fixedly installed on the bottom side of the stirring frame (304).

3. The high-efficiency esterification reaction apparatus according to claim 1, characterized in that: The bottom of the reactor (1) is fixedly installed with a discharge pipe (5) and is connected to the reactor (1). The inner side of the discharge pipe (5) is threaded with a valve (6), and the bottom of the valve (6) is fixedly installed with a rotating disk (7).

4. The high-efficiency esterification reaction apparatus according to claim 1, characterized in that: The ends of the intake pipe (401) and exhaust pipe (403) are fixedly installed with connecting flanges (405), and the radius of the connecting flanges (405) is greater than the opening radius of the intake pipe (401) and exhaust pipe (403).

5. The high-efficiency esterification reaction apparatus according to claim 1, characterized in that: The outer surface of the reactor (1) is fixedly fitted with a jacket (2), and the jacket (2) is in the shape of an annular ring that wraps around the outer surface of the reactor (1).

6. The high-efficiency esterification reaction apparatus according to claim 1, characterized in that: The top of the reactor (1) is fixedly equipped with an airtight sleeve (8), and the output shaft of the motor (302) passes through the airtight sleeve (8) and the airtight sleeve (8) is in the shape of an annular ring.

7. The high-efficiency esterification reaction apparatus according to claim 1, characterized in that: The bottom of the reactor (1) is fixedly installed with a support base (9), and the support base (9) is fixedly installed around the bottom of the reactor (1) and passes through the jacket (2).

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