Micro-channel reactor for producing paranitroaniline

Abstract

The utility model relates to the technical field of paranitroaniline production, and discloses a micro-channel reactor for producing paranitroaniline, which comprises a reaction kettle, a cleaning mechanism is arranged outside the reaction kettle, a heating mechanism is arranged on the inner side of the reaction kettle, the cleaning mechanism comprises a connecting ring, and the connecting ring is connected with the heating mechanism. A connecting column is fixedly connected to one end of the connecting ring, a cleaning ring is fixedly connected to one end of the connecting column, a connecting hole is formed in the outer portion of the cleaning ring, a cleaning rod is inserted into the inner side of the connecting hole, a cleaning brush is fixedly connected to one end of the cleaning rod, and a fixing assembly is arranged at one end of the cleaning rod. According to the micro-channel reactor for producing the paranitroaniline, the inner wall of the reaction kettle is cleaned through the cleaning mechanism, the influence on the reaction effect of the paranitroaniline is avoided, rapid and uniform heating can be performed through the heating mechanism, and the reaction effect of the paranitroaniline is improved. Therefore, cleaning and heating operations are completed.

Description

Technical Field

[0001] The utility model relates to the technical field of p-nitroaniline production, in particular to a microchannel reactor for producing p-nitroaniline. Background Art

[0002] p-Nitroaniline, also known as 4-nitroaniline, is an organic compound with the chemical formula C6H6N2O2. It is a yellow crystalline powder, insoluble in water, slightly soluble in benzene, soluble in ethanol, ether, acetone, and methanol. It is mainly used as an intermediate for dyes and antioxidants, a corrosion inhibitor, and an analytical reagent.

[0003] According to a reactor for producing p-nitroaniline disclosed in Chinese patent publication number CN 216910305 U, the device includes a reactor body, a hollow shaft is installed inside the reactor body, and the top of the hollow shaft is connected to a transmission shaft through a first connecting flange. In the utility model, by setting the hollow shaft, the secondary shaft, the second heating wire, the first connecting flange, the second connecting flange, the transmission shaft and the driving motor for coordinated use, it is convenient to improve the working efficiency of the reactor body, so that during operation, the two ends of the hollow shaft are respectively connected to the transmission shaft and the battery, and then the second heating wire heats the hollow shaft and the secondary shaft, and then the driving motor drives the hollow shaft to rotate through the transmission shaft, so that under the rotation of the hollow shaft, the heat generated by the second heating wire heats the inside of the reactor body through the hollow shaft and the secondary shaft. This method is simple to operate, changes the traditional single heating method, and speeds up the working efficiency of the reactor body.

[0004] However, the device is difficult to clean during use, and it is difficult to rinse the adhesion inside the reactor with clean water, which affects the reaction effect of the next p-nitroaniline. Utility Model Content

[0005] The utility model aims to provide a microchannel reactor for producing p-nitroaniline, so as to solve the problem that the device proposed in the above background technology is difficult to clean when in use, and it is difficult to rinse the adhered matter inside the reactor with clean water, which affects the reaction effect of the next p-nitroaniline.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a microchannel reactor for producing p-nitroaniline, comprising a reaction kettle, a cleaning mechanism is arranged outside the reaction kettle, and a heating mechanism is arranged inside the reaction kettle;

[0007] The cleaning mechanism includes a connecting ring, one end of the connecting ring is fixedly connected to a connecting column, one end of the connecting column is fixedly connected to a cleaning ring, a connecting hole is opened on the outside of the cleaning ring, a cleaning rod is inserted into the inner side of the connecting hole, one end of the cleaning rod is fixedly connected to a cleaning brush, and one end of the cleaning rod is provided with a fixing component.

[0008] Preferably, the fixing assembly comprises a fixing block, and a clamping block is fixedly connected to the bottom of the fixing block.

[0009] Preferably, the fixing block is fixedly connected to the top of the cleaning rod, and the bottom of the clamping block is clamped with the top of the cleaning ring.

[0010] Preferably, a motor is installed on the top of the reactor, a rotating shaft is installed on the bottom of the motor, a stirring rod is fixedly connected to the outside of the rotating shaft, the connecting ring is fixedly connected to the outside of the rotating shaft, and a placement hole is fixedly connected to the top of the reactor.

[0011] Preferably, the heating mechanism comprises a protective shell, an electric heating tube is installed on the inner side of the protective shell, a heat insulation board is arranged on the inner side of the protective shell, and a storage battery is installed on the top of the heat insulation board.

[0012] Preferably, the protective shell is configured to be T-shaped, and one end of the protective shell is snap-connected to the top of the connecting column.

[0013] Preferably, two protective shells are provided, and the two protective shells are arranged to be symmetrically distributed.

[0014] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0015] First, the utility model connects the connecting ring with the rotating shaft, installs the cleaning ring, makes the cleaning ring fit with the inner wall of the reactor, drives the rotating shaft to rotate by the arranged motor, and then drives the stirring rod to stir the p-nitroaniline, so that the p-nitroaniline reacts. After the production is completed, the placement hole on the top of the reactor is opened, so that the cleaning rod is inserted into the reactor from the placement hole until it passes through the connection outside the cleaning ring, and makes the fixing block on the top of the cleaning rod fit with the top of the cleaning ring, and the clamping block is clamped with the cleaning ring, so that the cleaning rod is installed, and the cleaning brush at one end of the cleaning rod fits with the inner wall of the reactor, and then pours clean water or detergent from the top of the reactor, and then drives the rotating shaft to rotate by the motor, and then drives the connecting ring on the outer wall of the rotating shaft to rotate, thereby drives the connecting column to rotate, and then drives the cleaning brush connected to the cleaning ring to clean the inner wall of the reactor. After the cleaning is completed, the cleaning rod is pulled out from the placement hole again to avoid the cleaning rod being left in the reactor to affect the reaction effect of the p-nitroaniline, thereby completing the operation of cleaning the inner wall of the reactor and achieving the effect of easy cleaning.

[0016] Second, the utility model opens the placement hole on the top of the reactor and passes the protective shell through the connecting column so that the protruding end of the T-shaped protective shell is snap-fitted with the top of the connecting column, and then the motor is rotated to drive the placing hole through the connecting column on the other side, and then the above operation is repeated to install another protective shell, thereby completing the installation of the protective shell. The snap-fit ​​method facilitates the subsequent replacement of the electric heating tube, and then a space is separated from the inside of the protective shell by the set insulation board to install a battery, so that the battery can power the electric heating tube, so that when the stirring rod is stirring the reaction, the protective shell also rotates, and then the electric heating tube in the protective shell also rotates, cooperating with the heater of the reactor itself to evenly and quickly heat the material in the reactor, thereby completing the operation of even and rapid heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall stereogram of the utility model;

[0018] Figure 2 It is a three-dimensional diagram of the cleaning mechanism of the utility model;

[0019] Figure 3 This is a cross-sectional view of the utility model;

[0020] Figure 4 It is an enlarged view of point A of the present utility model.

[0021] Among them: 1. Reactor; 2. Cleaning mechanism; 3. Heating mechanism; 21. Connecting ring; 22. Connecting column; 23. Cleaning ring; 24. Cleaning rod; 25. Cleaning brush; 26. Fixing assembly; 27. Fixing block; 28. Block; 31. Protective shell; 32. Electric heating tube; 33. Heat insulation board. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides the following technical solutions:

[0024] Embodiment 1

[0025] See also Figure 1 , Figure 2 , Figure 3 , Figure 4, a microchannel reactor for producing p-nitroaniline, comprising a reactor 1, a cleaning mechanism 2 is arranged outside the reactor 1, and a heating mechanism 3 is arranged inside the reactor 1;

[0026] The cleaning mechanism 2 includes a connecting ring 21, one end of which is fixedly connected to a connecting column 22, one end of which is fixedly connected to a cleaning ring 23, a connecting hole is provided on the outside of the cleaning ring 23, a cleaning rod 24 is inserted into the inner side of the connecting hole, one end of the cleaning rod 24 is fixedly connected to a cleaning brush 25, and one end of the cleaning rod 24 is provided with a fixing component 26.

[0027] The fixing assembly 26 includes a fixing block 27 , and a clamping block 28 is fixedly connected to the bottom of the fixing block 27 .

[0028] The fixing block 27 is fixedly connected to the top of the cleaning rod 24 , and the bottom of the clamping block 28 is clamped with the top of the cleaning ring 23 .

[0029] A motor is installed on the top of the reactor 1, a rotating shaft is installed on the bottom of the motor, a stirring rod is fixedly connected to the outside of the rotating shaft, a connecting ring 21 is fixedly connected to the outside of the rotating shaft, and a placement hole is fixedly connected to the top of the reactor 1.

[0030] According to the above technical solution, the connecting ring 21 is connected to the rotating shaft, and the cleaning ring 23 is installed so that the cleaning ring 23 fits the inner wall of the reactor 1. The rotating shaft is driven to rotate by the motor, and then the stirring rod is driven to stir the p-nitroaniline to make the p-nitroaniline react. After the production is completed, the placement hole on the top of the reactor 1 is opened, so that the cleaning rod 24 is inserted into the reactor 1 from the placement hole until it passes through the connection outside the cleaning ring 23, and the fixing block 27 on the top of the cleaning rod 24 fits the top of the cleaning ring 23, and the clamping block 28 is clamped with the cleaning ring 23, so that the cleaning rod 2 4 is installed, and the cleaning brush 25 at one end of the cleaning rod 24 is in contact with the inner wall of the reactor 1, and then clean water or detergent is poured from the top of the reactor 1, and then the motor drives the shaft to rotate, thereby driving the connecting ring 21 on the outer wall of the shaft to rotate, thereby driving the connecting column 22 to rotate, and then driving the cleaning brush 25 connected to the cleaning ring 23 to clean the inner wall of the reactor 1. After the cleaning is completed, the cleaning rod 24 is pulled out from the placement hole again to prevent the cleaning rod 24 from remaining in the reactor 1 and affecting the reaction effect of p-nitroaniline, thereby completing the operation of cleaning the inner wall of the reactor 1 and achieving the effect of easy cleaning.

[0031] Embodiment 2

[0032] See also Figure 1 , Figure 2 , Figure 3 , Figure 4On the basis of the first embodiment, it is further obtained that the heating mechanism 3 includes a protective shell 31, an electric heating tube 32 is installed on the inner side of the protective shell 31, a heat insulation board 33 is arranged on the inner side of the protective shell 31, and a battery is installed on the top of the heat insulation board 33.

[0033] The protective shell 31 is configured to be T-shaped, and one end of the protective shell 31 is engaged with the top of the connecting column 22 .

[0034] Two protective shells 31 are provided, and the two protective shells 31 are arranged to be symmetrically distributed.

[0035] Through the above technical solution, at this time, by opening the placement hole on the top of the reactor 1, the protective shell 31 is passed through the connecting column 22, so that the protruding end of the T-shaped protective shell 31 is clamped with the top of the connecting column 22, and then the motor is rotated to make the connecting column 22 on the other side drive the placement hole, and then repeat the above operation to install another protective shell 31, thereby completing the installation of the protective shell 31. The subsequent replacement of the electric heating tube 32 is convenient by clamping, and then a space is separated from the inside of the protective shell 31 by the set insulation board 33 for installing a battery, so that the battery can power the electric heating tube 32, so that when the stirring rod is stirring the reaction, the protective shell 31 also rotates, and then the electric heating tube 32 in the protective shell 31 also rotates, and cooperates with the heater of the reactor 1 itself to heat the material in the reactor 1 evenly and quickly, thereby completing the operation of even and rapid heating.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A microchannel reactor for producing p-nitroaniline, comprising a reaction kettle (1), characterized in that: A cleaning mechanism (2) is arranged outside the reaction kettle (1), and a heating mechanism (3) is arranged inside the reaction kettle (1); The cleaning mechanism (2) comprises a connecting ring (21), one end of the connecting ring (21) is fixedly connected to a connecting column (22), one end of the connecting column (22) is fixedly connected to a cleaning ring (23), a connecting hole is provided on the outside of the cleaning ring (23), a cleaning rod (24) is inserted into the inside of the connecting hole, one end of the cleaning rod (24) is fixedly connected to a cleaning brush (25), and one end of the cleaning rod (24) is provided with a fixing component (26).

2. A microchannel reactor for producing p-nitroaniline according to claim 1, characterized in that: The fixing assembly (26) comprises a fixing block (27), and a clamping block (28) is fixedly connected to the bottom of the fixing block (27).

3. A microchannel reactor for producing p-nitroaniline according to claim 2, characterized in that: The fixing block (27) is fixedly connected to the top of the cleaning rod (24), and the bottom of the clamping block (28) is clamped to the top of the cleaning ring (23).

4. A microchannel reactor for producing p-nitroaniline according to claim 1, characterized in that: A motor is installed on the top of the reactor (1), a rotating shaft is installed on the bottom of the motor, a stirring rod is fixedly connected to the outside of the rotating shaft, the connecting ring (21) is fixedly connected to the outside of the rotating shaft, and a placement hole is fixedly connected to the top of the reactor (1).

5. A microchannel reactor for producing p-nitroaniline according to claim 1, characterized in that: The heating mechanism (3) comprises a protective shell (31), an electric heating tube (32) is installed inside the protective shell (31), a heat insulation board (33) is arranged inside the protective shell (31), and a storage battery is installed on the top of the heat insulation board (33).

6. A microchannel reactor for producing p-nitroaniline according to claim 5, characterized in that: The protective shell (31) is arranged in a T-shape, and one end of the protective shell (31) is clamped with the top of the connecting column (22).

7. A microchannel reactor for producing p-nitroaniline according to claim 5, characterized in that: Two protective shells (31) are provided, and the two protective shells (31) are arranged to be symmetrically distributed.

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