Reaction kettle for esterification reaction of phosphotriester

Abstract

The invention relates to the technical field of reaction kettles, in particular to a phosphotriester esterification reaction kettle which comprises a reaction kettle body, a stirring assembly, an exhaust mechanism, a detection mechanism and a filtering assembly. The stirring assembly is arranged, the reaction kettle body provides a sealed and stable reaction environment, a built-in heating ring and a built-in temperature sensor can precisely regulate and control the reaction temperature, it is ensured that the reaction is conducted at the proper temperature, and a motor in the stirring assembly provides power for the whole stirring system; a driving shaft drives a rotating plate and stirring blades to rotate, so that reactants are uniformly mixed, meanwhile, the rotating plate can drive a limiting plate and a driven shaft to integrally and horizontally rotate by taking the driving shaft as a center, a driven gear is meshed with a gear ring, the driven shaft rotates by taking an axial lead as a circle center, and driven blades can be further driven to rotate; meanwhile, the rotating directions of the driven shaft and the driving shaft are opposite, so that the reaction materials are more dispersed, and the mixing effect is better.

Description

Technical Field

[0001] This invention relates to the field of reaction vessel technology, and in particular to a reaction vessel for the esterification reaction of triphosphates. Background Technology

[0002] Phosphate esters are a class of organophosphorus compounds formed by the esterification reaction (dehydration condensation) of phosphoric acid (H3PO4) with alcohols (ROH) or phenols (ArOH). Their general formula can be represented as O=P(OR)3 or more commonly (RO)3P=O, where R represents an organic group (alkyl, aryl, etc.). They typically possess good thermal and chemical stability and play important roles in various industrial fields. Due to their excellent physicochemical properties, phosphate esters have become indispensable chemicals in many fields, widely used in flame retardancy, solubilization, and emulsification.

[0003] Currently, esterification is a class of organic chemical reactions, primarily involving the reaction of alcohols with carboxylic acids or inorganic oxyacids to form esters and water. It is categorized into three types: reactions of carboxylic acids with alcohols, reactions of inorganic oxyacids with alcohols, and reactions of inorganic strong acids with alcohols. The esterification of carboxylic acids with alcohols is reversible and generally extremely slow, thus concentrated sulfuric acid is commonly used as a catalyst. The reaction of polycarboxylic acids with alcohols can produce various esters. Reactions of inorganic strong acids with alcohols are generally faster. A typical esterification reaction is the reaction of ethanol with acetic acid, producing ethyl acetate, which has an aromatic odor and is a raw material for the manufacture of dyes and pharmaceuticals. Esterification reactions are widely used in organic synthesis and other fields.

[0004] However, the traditional stirring method used in esterification reactors often employs a single blade structure, which can easily lead to uneven mixing of materials and insufficient localized reactions. This makes it difficult to disperse the reactants and significantly reduces the mixing effect. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a reaction vessel for the esterification reaction of phosphate triesters. This invention addresses the technical problem that the stirring method of traditional esterification reaction vessels often adopts a single blade structure, which easily leads to uneven mixing of materials and insufficient local reaction, making it difficult to disperse the reactants and greatly reducing the mixing effect.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A reaction vessel for the esterification reaction of a phosphate triester includes: a reaction vessel body; a heating ring and a temperature sensor are embedded in the inner wall of the reaction vessel body; A stirring assembly is disposed inside the reactor body. The stirring assembly includes a motor, a drive shaft, a rotating plate, a driven gear, a driven shaft, stirring blades, driven blades, a scraper, a vertical plate, a gear ring, and a limiting plate. The motor is fixedly installed on the top of the reactor body, and the output end of the motor is fixedly connected to the drive shaft. The rotating plate and stirring blades are both fixedly installed outside the drive shaft. The limiting plate and the driven gear are both fixedly sleeved on the top of the driven shaft, and the limiting plate is movably installed inside the rotating plate. The gear ring is fixedly installed on the top inner wall of the reactor body, and the driven gear meshes with the gear ring. The vertical plate is fixedly installed on the bottom wall of the rotating plate, and the scraper is fixedly installed on one side outer wall of the vertical plate, and the scraper is movably connected to the inner wall of the heating ring and the inner side wall of the reactor body. Exhaust mechanism; the exhaust mechanism is located at the top of the reactor body; The detection mechanism is located outside the reactor body. A filter assembly; the filter assembly is located at the bottom of the reactor body.

[0007] Furthermore, a support leg is fixedly installed at the bottom of the reactor body, and a foot pad is fixedly installed at the bottom end of the support leg.

[0008] Furthermore, the exhaust mechanism includes an exhaust pipe, a purification box, a pressure gauge, and a discharge pipe. The purification box is fixedly installed on the top of the reactor body, and the exhaust pipe is used for communication between the reactor body and the purification box.

[0009] Furthermore, the discharge pipe is connected to the output end of the purification box, and an air valve and a pressure gauge are installed inside the discharge pipe.

[0010] Furthermore, the filter assembly includes a filter box, a filter cotton assembly, a mounting plate, a rectangular block, and a rectangular sleeve. The filter box is fixedly installed at the bottom of the reactor body, and the rectangular block is fixedly installed at the bottom end of the drive shaft.

[0011] Furthermore, the rectangular sleeve is fixedly installed on the top of the mounting plate, and the rectangular sleeve is slidably fitted onto the outside of the rectangular block. The filter cotton assembly is limited and movably fitted onto the outside of the rectangular sleeve, and a bolt connection is provided between the mounting plate and the filter box.

[0012] Furthermore, the detection mechanism includes a detection box, a drain pipe, a return pipe, and a delivery pipe. The detection box is fixedly installed outside the reactor body. The detection box and the filter box are connected by the delivery pipe. A drain pipe is provided at one output end of the detection box, and a valve is provided inside the drain pipe.

[0013] Furthermore, the reflux pipe is used to detect the connection between the detection tank and the reactor body, and a valve is also installed inside the reflux pipe.

[0014] The beneficial effects of this invention are: Equipped with a stirring assembly, the reactor body provides a sealed and stable reaction environment. The built-in heating ring and temperature sensor can precisely control the reaction temperature, ensuring that the reaction proceeds at a suitable temperature. The motor in the stirring assembly provides power to the entire stirring system. The drive shaft drives the rotating plate and stirring blades to rotate, making the reactants evenly mixed. At the same time, the rotating plate can drive the limiting plate and the driven shaft to rotate horizontally around the drive shaft. This causes the driven gear to mesh with the gear ring, making the driven shaft rotate around its axis, which in turn drives the driven blades to rotate. Since the driven shaft and the drive shaft rotate in opposite directions, the reactants are more dispersed, the mixing effect is better, the device has higher linkage, and the reaction is more complete and thorough, resulting in more uniform and reliable mixing of materials. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the reactor used for the esterification reaction of this triphosphate; Figure 2 This is a schematic diagram of the internal structure of the reactor used in the esterification reaction of this triphosphate; Figure 3 This is a partial schematic diagram of the stirring assembly of the reactor used for the esterification reaction of this triphosphate; Figure 4 This is a schematic diagram of the driven gear installation in an embodiment of the reactor used for the esterification reaction of this triphosphate; Figure 5 This is a schematic diagram of the filter assembly assembly in an embodiment of the reaction vessel used for the esterification reaction of this triphosphate. Figure 6 This is a three-dimensional schematic diagram of the detection mechanism in an example of a reaction vessel used for the esterification reaction of this triphosphate.

[0017] The diagram shows the following markings: 1. Reactor body; 11. Support leg; 12. Foot pad; 13. Temperature sensor; 2. Stirring assembly; 21. Motor; 22. Drive shaft; 23. Rotating plate; 24. Driven gear; 25. Driven shaft; 26. Stirring blade; 27. Driven blade; 28. Scraper; 29. ​​Mounting plate; 20. Gear ring; 211. Limiting plate; 3. Exhaust mechanism; 31. Exhaust pipe; 32. Filter box; 33. Pressure gauge; 34. Discharge pipe; 4. Detection mechanism; 41. Detection box; 42. Drain pipe; 43. Return pipe; 44. Conveying pipe; 5. Filter assembly; 51. Filter box; 52. Filter cotton assembly; 53. Mounting plate; 54. Rectangular block; 55. Rectangular sleeve. Detailed Implementation

[0018] The following will refer to the appendices in the embodiments of the present invention. Figure 1-6 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0020] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0021] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0022] Please see Figure 1-6 As shown, a reaction vessel for the esterification reaction of phosphate triester includes: a reaction vessel body 1, a stirring assembly 2, an exhaust mechanism 3, a detection mechanism 4, and a filter assembly 5; A heating ring 13 and a temperature sensor are embedded in the inner wall of the reactor body 1. The stirring assembly 2 is located inside the reactor body 1 and includes a motor 21, a drive shaft 22, a rotating plate 23, a driven gear 24, a driven shaft 25, stirring blades 26 and 27, a scraper 28, a vertical plate 29, a gear ring 20, and a limiting plate 211. The motor 21 is fixedly installed on the top of the reactor body 1, and its output end is fixedly connected to the drive shaft 22. The rotating plate 23 and the stirring blades 26 are both fixedly installed outside the drive shaft 22. The limiting plate 211 and the driven gear 24 are also fixedly installed outside the drive shaft 22. The fixed sleeve is attached to the outside of the top of the driven shaft 25, and the limiting plate 211 is movably installed inside the rotating plate 23. The gear ring 20 is fixedly installed on the top inner wall of the reactor body 1. The driven gear 24 is meshed with the gear ring 20. The vertical plate 29 is fixedly installed on the bottom wall of the rotating plate 23. The scraper 28 is fixedly installed on one side outer wall of the vertical plate 29, and the scraper 28 is movably connected to the inner wall of the heating ring 13 and the inner side wall of the reactor body 1. The exhaust mechanism 3 is located at the top of the reactor body 1. The detection mechanism 4 is located outside the reactor body 1. The filter assembly 5 is located at the bottom of the reactor body 1.

[0023] Specifically, by providing a stirring assembly 2, the reactor body 1 provides a sealed and stable reaction environment. The built-in heating ring 13 and temperature sensor can precisely control the reaction temperature to ensure that the reaction takes place at a suitable temperature. The motor 21 in the stirring assembly 2 provides power to the entire stirring system. The drive shaft 22 drives the rotating plate 23 and stirring blades 26 to rotate, so that the reactants are mixed evenly. At the same time, the rotating plate 23 can drive the limiting plate 211 and the driven shaft 25 to rotate horizontally around the drive shaft 22. Then the driven gear 24 meshes with the gear ring 20, so that the driven shaft 25 rotates around the axis, which in turn drives the driven blades 27 to rotate. Since the driven shaft 25 and the drive shaft 22 rotate in opposite directions, the reactants are more dispersed, the mixing effect is better, the linkage of the device is higher, the reaction is more complete and thorough, and the mixing of materials is more uniform and reliable.

[0024] In this embodiment, a support leg 11 is fixedly installed at the bottom of the reactor body 1, and a foot pad 12 is fixedly installed at the bottom end of the support leg 11.

[0025] Specifically, the device is powered by an external power supply, and an external controller is connected to the device. The controller is electrically connected to the motor 21, the heating ring 13, the detection box 41, and the water pump. The motor 21 is a stepper motor. The internal components of the detection box 41 can be detected by high performance liquid chromatography and infrared spectroscopy to determine whether the reaction is complete. The temperature sensor can detect the temperature inside the reaction vessel, thereby controlling the temperature of the heating ring 13. Heating can be achieved using resistance wire.

[0026] The exhaust mechanism 3 includes an exhaust pipe 31, a purification box 32, a pressure gauge 33, and a discharge pipe 34. The purification box 32 is fixedly installed on the top of the reactor body 1. The exhaust pipe 31 is used for communication between the reactor body 1 and the purification box 32. The discharge pipe 34 is connected to the output end of the purification box 32. The discharge pipe 34 is equipped with a gas valve and a pressure gauge 33.

[0027] Specifically, during use, the heating ring 13 heats the reactants, which generates a certain amount of gas, thus affecting the use of the reactor. The purification chamber 32 is used to treat and purify the gas generated during the reaction. The exhaust pipe 31 connects the reactor and the purification chamber 32, and the discharge pipe 34 discharges the purified gas. The gas valve and pressure gauge 33 inside the discharge pipe 34 are used to control the gas discharge rate and monitor the discharge pressure to ensure the purity and stability of the discharged gas.

[0028] The filter assembly 5 includes a filter box 51, a filter cotton assembly 52, a mounting plate 53, a rectangular block 54, and a rectangular sleeve 55. The filter box 51 is fixedly installed at the bottom of the reactor body 1, the rectangular block 54 is fixedly installed at the bottom of the drive shaft 22, the rectangular sleeve 55 is fixedly installed at the top of the mounting plate 53, and the rectangular sleeve 55 is slidably sleeved on the outside of the rectangular block 54. The filter cotton assembly 52 is limited and movablely sleeved on the outside of the rectangular sleeve 55. A bolt connection is provided between the mounting plate 53 and the filter box 51.

[0029] Specifically, the filter assembly 5 uses the filter box 51 and the filter cotton assembly 52 to separate the tiny particles generated in the reaction. The sliding design of the mounting plate 53 and the rectangular sleeve 55 facilitates cleaning and replacement of the filter cotton, effectively preventing material blockage. Through the coordinated work of these components, the entire device can effectively carry out the esterification reaction of triphosphate under precise temperature and pressure control, while ensuring the purity of the reaction products.

[0030] The testing mechanism 4 includes a testing box 41, a drain pipe 42, a return pipe 43, and a delivery pipe 44. The testing box 41 is fixedly installed on the outside of the reactor body 1. The testing box 41 and the filter box 51 are connected by the delivery pipe 44. A drain pipe 42 is provided at one output end of the testing box 41. A valve is provided inside the drain pipe 42. The return pipe 43 is used to connect the testing box 41 and the reactor body 1. A valve is also provided inside the return pipe 43.

[0031] Specifically, the testing unit 4 can monitor various parameters in real time during the reaction process to ensure the smooth progress of the reaction. When the tested material is unqualified, the valve of the reflux pipe 43 is opened, allowing it to enter the reactor body 1 for reprocessing and reaction. When the tested material is qualified, the valve inside the drain pipe 42 is opened, allowing the material to be directly discharged for use.

[0032] In summary, compared with existing technologies, this esterification reaction vessel has at least the following beneficial effects: By providing a stirring assembly 2, the reaction vessel body 1 provides a sealed and stable reaction environment. The built-in heating ring 13 and temperature sensor can precisely control the reaction temperature, ensuring that the reaction takes place at a suitable temperature. The motor 21 in the stirring assembly 2 provides power to the entire stirring system. The drive shaft 22 drives the rotating plate 23 and stirring blades 26 to rotate, making the reactants evenly mixed. At the same time, the rotating plate 23 can drive the limiting plate 211 and the driven shaft 25 to rotate horizontally around the drive shaft 22. The driven gear 24 meshes with the gear ring 20, causing the driven shaft 25 to rotate around its axis, which in turn drives the driven blades 27 to rotate. Since the driven shaft 25 and the drive shaft 22 rotate in opposite directions, the reactants are more dispersed, the mixing effect is better, the linkage of the device is higher, the reaction is more complete and thorough, and the mixing of materials is more uniform and reliable.

[0033] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A reaction vessel for the esterification reaction of a triphosphate, characterized in that, include: The reactor body (1) is equipped with a heating ring (13) and a temperature sensor embedded in the inner wall of the reactor body (1). Stirring assembly (2); The stirring assembly (2) is located inside the reactor body (1). The stirring assembly (2) includes a motor (21), a drive shaft (22), a rotating plate (23), a driven gear (24), a driven shaft (25), stirring blades (26), driven blades (27), a scraper (28), a vertical plate (29), a gear ring (20), and a limiting plate (211). The motor (21) is fixedly installed on the top of the reactor body (1). The output end of the motor (21) is fixedly connected to the drive shaft (22). The rotating plate (23) and the stirring blades (26) are both fixedly installed on the drive shaft. Outside the drive shaft (22), the limiting plate (211) and the driven gear (24) are fixedly sleeved on the outside of the top of the driven shaft (25), and the limiting plate (211) is movably installed inside the rotating plate (23). The gear ring (20) is fixedly installed on the top inner wall of the reactor body (1). The driven gear (24) is meshed with the gear ring (20). The vertical plate (29) is fixedly installed on the bottom wall of the rotating plate (23). The scraper (28) is fixedly installed on one side outer wall of the vertical plate (29), and the scraper (28) is movably connected to the inner wall of the heating ring (13) and the inner side wall of the reactor body (1). Exhaust mechanism (3); the exhaust mechanism (3) is located on the top of the reactor body (1); Detection mechanism (4); the detection mechanism (4) is located outside the reactor body (1); Filter assembly (5); the filter assembly (5) is located at the bottom of the reactor body (1).

2. The reaction vessel for the esterification reaction of a triphosphate according to claim 1, characterized in that, The bottom of the reactor body (1) is fixedly equipped with a support leg (11), and the bottom end of the support leg (11) is fixedly equipped with a foot pad (12).

3. The reaction vessel for the esterification reaction of a triphosphate according to claim 2, characterized in that, The exhaust mechanism (3) includes an exhaust pipe (31), a purification box (32), a pressure gauge (33), and a discharge pipe (34). The purification box (32) is fixedly installed on the top of the reactor body (1), and the exhaust pipe (31) is used for communication between the reactor body (1) and the purification box (32).

4. The reaction vessel for the esterification reaction of a triphosphate according to claim 3, characterized in that, The discharge pipe (34) is connected to the output end of the purification box (32), and the discharge pipe (34) is equipped with an air valve and a pressure gauge (33).

5. The reaction vessel for the esterification reaction of a triphosphate according to claim 4, characterized in that, The filter assembly (5) includes a filter box (51), a filter cotton assembly (52), a mounting plate (53), a rectangular block (54), and a rectangular sleeve (55). The filter box (51) is fixedly installed at the bottom of the reactor body (1), and the rectangular block (54) is fixedly installed at the bottom end of the drive shaft (22).

6. The reaction vessel for the esterification reaction of a triphosphate according to claim 5, characterized in that, The rectangular sleeve (55) is fixedly installed on the top of the mounting plate (53), and the rectangular sleeve (55) is slidably sleeved on the outside of the rectangular block (54). The filter cotton assembly (52) is limited and movably sleeved on the outside of the rectangular sleeve (55). A bolt connection is provided between the mounting plate (53) and the filter box (51).

7. The reaction vessel for the esterification reaction of a triphosphate according to claim 6, characterized in that, The detection mechanism (4) includes a detection box (41), a drain pipe (42), a return pipe (43), and a delivery pipe (44). The detection box (41) is fixedly installed outside the reactor body (1). The detection box (41) and the filter box (51) are connected by the delivery pipe (44). A drain pipe (42) is provided at one output end of the detection box (41), and a valve is provided inside the drain pipe (42).

8. The reaction vessel for the esterification reaction of a triphosphate according to claim 7, characterized in that, The reflux pipe (43) is used to detect the connection between the test chamber (41) and the reactor body (1), and a valve is also provided inside the reflux pipe (43).

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