Dripping type reaction device for acylation reaction

Abstract

The dropwise adding type reaction device comprises a tank body, a top cover, a dropwise adding device, a stirring mechanism and an auxiliary mechanism, a heating piece is installed at the bottom of the tank body, the top cover connected with the top of the tank body in a sealing mode is installed at the top of the tank body, the dropwise adding device is installed on the top face of the top cover, a dripping opening of the dropwise adding device is communicated with the interior of the tank body, and the stirring mechanism is installed on the stirring mechanism. The dropwise adding type reaction device for acylation reaction solves the problems that when an existing reaction device is used, a heating piece at the bottom is used for heating the reaction tank, the heating piece is arranged at the bottom of the reaction tank, the heating piece is arranged at the bottom of the reaction tank, and the stirring mechanism is arranged inside the tank, and the auxiliary mechanism is arranged on the peripheral side of the stirring mechanism. In the prior art, an internal solution is fully mixed with a reaction stock solution under the stirring of a stirring blade to complete the reaction work, and although the reaction work can be completed in the mode, the problem that the mixing efficiency of the solution and the stock solution is reduced and the actual use is not facilitated due to low stirring efficiency caused by only depending on a single group of stirring equipment exists.

Description

TECHNICAL FIELD

[0001] The utility model relates to propionyl chloride acylation equipment technical field especially relates to a kind of dropwise addition type reaction device for acylation reaction. BACKGROUND

[0002] Propionyl chloride acylation is an important organic synthesis reaction, and acylation refers to the replacement of hydrogen atoms in the molecules of organic compounds by acyl groups. In the acylation reaction of propionyl chloride, propionyl chloride is used as an acylating agent to introduce acyl groups into other compound molecules. The reaction principle is as follows: taking the preparation of propionyl chloride from propionic acid as an example, phosphorus trichloride is usually used as an acylating reagent. During the reaction, phosphorus trichloride reacts with propionic acid to produce propionyl chloride and phosphorous acid. Dropwise addition type reaction device is a commonly used equipment in chemical experiments and industrial production, which is used to accurately control the adding speed and amount of liquid materials. The dropwise addition type reaction device drops the liquid raw materials into the reaction vessel at a certain speed and amount through the dropping tank, so that they react with other substances in the reaction vessel. During the dropping process, the dropping rate can be accurately controlled by the flow regulating valve, thereby controlling the speed and degree of the reaction. At the same time, the gas or steam produced by the reaction can be condensed and recovered by the condensing device, avoiding pollution to the environment.

[0003] Currently, when the reaction device is in use, the bottom heating element is used to heat the reaction tank body, so that the internal solution is fully mixed with the reaction stock solution under the stirring of the stirring blade to complete the reaction work. Although this method can complete the reaction work, it also has the following problems: due to the use of only a single set of stirring equipment, the stirring efficiency is low, which reduces the mixing efficiency of the solution and the stock solution, and is not conducive to actual use.

[0004] Therefore, it is necessary to provide a dropwise addition type reaction device for acylation reaction to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a dropwise addition type reaction device for acylation reaction to solve the above technical problems.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A dropwise addition type reaction device for acylation reaction, comprising: a tank body, a top cover, a dropper, a stirring mechanism, and an auxiliary mechanism.

[0008] The bottom of the tank body is provided with a heating element, the top of the tank body is provided with a top cover in sealing connection with the tank body, the top surface of the top cover is provided with a dropping device, the dropping port of the dropping device is in communication with the inside of the tank body, the inside of the tank body is provided with a stirring mechanism, the outer periphery of the stirring mechanism is provided with an auxiliary mechanism, the stirring mechanism is composed of a motor, a stirring shaft and stirring blades, the motor is arranged on the top surface of the top cover and is connected with the stirring shaft arranged in the inside of the tank body, and the lower outer periphery of the stirring shaft is provided with the stirring blades.

[0009] In one embodiment, the upper part of the stirring shaft is connected with the driving tooth through a connecting rod.

[0010] In one embodiment, the auxiliary mechanism is arranged in an annular array.

[0011] In one embodiment, the auxiliary mechanism is composed of a rotating shaft, a shaft sleeve, a fixing rod, a fixing plate, a driven tooth and mixing blades, the upper part of the rotating shaft is connected with the fixing plate through the shaft sleeve, the left side of the fixing plate is connected with the inner wall of the tank body through the fixing rod, the top of the rotating shaft is provided with the driven tooth, the driven tooth is connected with the driving tooth in meshing connection, and the bottom outer periphery of the rotating shaft is provided with the mixing blades.

[0012] In one embodiment, the bottom port of the dropping device is located in the idle area between adjacent driven teeth.

[0013] The utility model discloses the beneficial effects are as follows:

[0014] (1), the utility model discloses a heating element is started to the tank body bottom and heats the tank body, through the solution is guided into the tank body inside, through starting the dropping device and dropping the operation of the original liquid, and the motor is started to drive the stirring shaft and stirring blade rotation, and the solution is mixed with the original liquid, and the auxiliary mechanism forms the auxiliary stirring of small unit on the outer periphery of stirring blade, and the mixing efficiency is improved.

[0015] (2), the utility model discloses the rotation of the stirring shaft synchronous drive driving tooth rotation, make driving tooth drive driven tooth rotation, and then drive the rotating shaft to drive mixing blade rotation under the limiting of shaft sleeve, through the setting of multiple mixing blades, can form small -size mixing area on the outer periphery of stirring blade, and the mixing area formed with stirring blade cooperates, and the mixing efficiency of solution and original liquid is improved, and then the processing efficiency of whole process is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structural drawing of the utility model;

[0017] Figure 2 It is the detail drawing of the utility model after splitting each component;

[0018] Figure 3The utility model discloses a stirring mechanism detail drawing.

[0019] Figure 4 The utility model discloses an auxiliary mechanism detail drawing.

[0020] Among them, the name corresponding to the reference sign is: tank body 1, top cap 2, drop feeder 3, stirring mechanism 4, motor 41, stirring shaft 42, stirring vane 43, mounting rod 44, driving tooth 45, auxiliary mechanism 5, pivot 51, shaft sleeve 52, fixed rod 53, fixed plate 54, driven tooth 55, mixing vane 56. Specific implementation

[0021] The utility model will be further explained below combining with the attached drawing and embodiment, and the mode of the utility model includes but is not limited to following embodiment.

[0022] As Figures 1-2 The utility model discloses a drop formula reaction device for acylation reaction, including: tank body 1, top cap 2, drop feeder 3, stirring mechanism 4, auxiliary mechanism 5.

[0023] As Figures 1-3 The bottom of the tank body 1 is provided with a heating element, and the top of the tank body 1 is provided with a top cap 2 in sealing connection with the tank body 1, the top surface of the top cap 2 is provided with a drop feeder 3, the drop flow port of the drop feeder 3 is in communication with the inside of the tank body 1, the inside of the tank body 1 is provided with a stirring mechanism 4, the outer periphery of the stirring mechanism 4 is provided with an auxiliary mechanism 5, the stirring mechanism 4 is composed of a motor 41, a stirring shaft 42 and a stirring vane 43, the motor 41 is installed on the top surface of the top cap 2, the motor 41 is connected with the stirring shaft 43 located in the inside of the tank body 1, the lower outer periphery of the stirring shaft 42 is provided with the stirring vane 43, in working, the tank body 1 is heated by starting the heating element at the bottom of the tank body 1, the solution is introduced into the inside of the tank body 1, the original solution is dropped by starting the drop feeder 3, the motor 41 drives the stirring shaft 42 and the stirring vane 43 to rotate, the solution and the original solution are mixed, the auxiliary mechanism 5 forms the auxiliary stirring of small unit on the outer periphery of the stirring vane 43, and the mixing efficiency is improved.

[0024] Preferably, in an embodiment, as Figures 2-3 The upper part of the stirring shaft 42 is connected with the driving tooth 45 through the mounting rod 44.

[0025] Preferably, in an embodiment, as Figure 4 The auxiliary mechanism 5 is arranged in a plurality of annular arrays.

[0026] Preferably, in an embodiment, as Figure 4As shown, the auxiliary mechanism 5 is composed of a rotating shaft 51, a shaft sleeve 52, a fixed rod 53, a fixed plate 54, a driven gear 55 and mixing blades 56, the upper part of the rotating shaft 51 is connected with the fixed plate 54 through the shaft sleeve 52, the left side of the fixed plate 54 is connected with the inner wall of the tank body 1 through the fixed rod 53, the top of the rotating shaft 51 is provided with the driven gear 55, the driven gear 55 is connected with the driving gear 45 in meshing mode, the bottom outer periphery of the rotating shaft 51 is provided with the mixing blades 56, in working, the driving gear 45 is driven to rotate by the rotation of the stirring shaft 42 in synchronization, the driven gear 55 is driven to rotate by the driving gear 45, the rotating shaft 51 is driven to rotate by the driven gear 55 under the limiting of the shaft sleeve 52, the mixing blades 56 are driven to rotate, a small mixing area is formed on the outer periphery of the stirring blade 43 by the mixing blades 56, the mixing efficiency of the solution and the stock solution is improved by the cooperation of the mixing area formed by the stirring blade 43 and the mixing area formed by the mixing blades 56, and the processing efficiency of the whole process is improved.

[0027] Preferably, in one embodiment, the bottom opening of the drop feeder 3 is located in the gap area between the adjacent driven gears 55, so that the stock solution is prevented from falling on the driven gears 55 and being wasted.

[0028] The working principle of the utility model is as follows:

[0029] In working, the tank body 1 is heated by starting the heating element at the bottom of the tank body 1, the solution is introduced into the tank body 1, the stock solution is dropped by starting the drop feeder 3, the stirring shaft 42 and the stirring blade 43 are driven to rotate by starting the motor 41, the solution and the stock solution are mixed, the auxiliary stirring of a small unit is formed on the outer periphery of the stirring blade 43 by the auxiliary mechanism 5, the mixing efficiency is improved, the driving gear 45 is driven to rotate by the rotation of the stirring shaft 42 in synchronization, the driven gear 55 is driven to rotate by the driving gear 45, the rotating shaft 51 is driven to rotate by the driven gear 55 under the limiting of the shaft sleeve 52, the mixing blades 56 are driven to rotate, a small mixing area is formed on the outer periphery of the stirring blade 43 by the mixing blades 56, the mixing efficiency of the solution and the stock solution is improved by the cooperation of the mixing area formed by the stirring blade 43 and the mixing area formed by the mixing blades 56, and the processing efficiency of the whole process is improved.

[0030] The above embodiment is only one of the preferred embodiments of the utility model, and should not be used to limit the protection scope of the utility model, but any insignificant modification or polishing made on the main design idea and spirit of the utility model, the technical problems solved are still consistent with the utility model, and should be included in the protection scope of the utility model.

Claims

1. A dropwise reaction device for acylation reaction, characterized by, Include: Tank body, top cover, drop feeder, stirring mechanism, auxiliary mechanism; The bottom of the tank body is provided with a heating element, the top of the tank body is provided with a top cover in sealing connection with the tank body, the top surface of the top cover is provided with a drop feeder, the drop flow port of the drop feeder is in communication with the inside of the tank body, the inside of the tank body is provided with a stirring mechanism, the outer periphery of the stirring mechanism is provided with an auxiliary mechanism, the stirring mechanism is composed of a motor, a stirring shaft and stirring blades, the motor is installed on the top surface of the top cover, the motor is in mounting connection with the stirring shaft located in the inside of the tank body, the lower part of the outer periphery of the stirring shaft is provided with the stirring blades.

2. The dropwise reaction device for acylation reaction according to claim 1, wherein The upper part of the stirring shaft is connected with the driving tooth through a mounting rod.

3. The dropwise reaction device for acylation reaction according to claim 1, wherein The auxiliary mechanism is arranged in multiple annular arrays.

4. The dropwise reaction device for acylation reaction according to claim 3, wherein The auxiliary mechanism is composed of a rotating shaft, a shaft sleeve, a fixing rod, a fixing plate, a driven tooth and mixing blades, the upper part of the rotating shaft is in mounting connection with the fixing plate through the shaft sleeve, the left side of the fixing plate is in mounting connection with the inner wall of the tank body through the fixing rod, the top of the rotating shaft is provided with the driven tooth, the driven tooth is in meshing connection with the driving tooth, the bottom of the rotating shaft is provided with the mixing blades.

5. The dropwise reaction device for acylation reaction according to claim 1, wherein The bottom port of the drop feeder is in the idle area between the adjacent driven teeth, so as to avoid that the raw liquid drops on the driven teeth and causes the waste of the raw liquid.

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