Continuous reactor for anilinoacetonitrile

Abstract

The utility model discloses an anilinoacetonitrile continuous reactor, which relates to the technical field of chemical equipment, and comprises reaction tubes, the reaction tubes are arranged up and down, heat exchange tubes are arranged on the outer surfaces of the reaction tubes, communicating elbows are arranged between the upper and lower adjacent reaction tubes in a staggered manner, and the communicating elbows are communicated with the heat exchange tubes. The reaction pipes are sequentially communicated and connected in an S shape through the communicating bent pipes, a first supporting column and a second supporting column are arranged on the two sides of the rear portion of each reaction pipe respectively, supporting frames are arranged at the positions, corresponding to the reaction pipes, of the first supporting columns and the second supporting columns, and the heat exchange pipes abut against the supporting frames. Heat exchange cavities are formed in the first supporting column and the second supporting column, heat exchange communicating pipes are arranged on the side wall of the first supporting column and the side wall of the second supporting column and between the supporting frames, and the heat exchange communicating pipes are communicated with the heat exchange pipes, so that the overall structure of the reactor is simplified; the production space occupied by reaction equipment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to an aniline acetonitrile continuous reactor. Background Technology

[0002] The aniline-acetonitrile continuous reactor is a chemical equipment used for the efficient synthesis of aniline-acetonitrile. It employs continuous flow reaction technology to replace traditional batch production, enabling continuous feeding, reaction, and product collection of raw materials such as aniline and cyanoacetic acid. The reactor's internal design emphasizes precise control of temperature, pressure, and residence time, often utilizing tubular or microchannel structures to enhance mass and heat transfer efficiency. Compared to batch processes, continuous reactors offer advantages such as high production efficiency, stable product quality, low energy consumption, and good safety. To ensure temperature control, traditional continuous reactors typically install heat exchange tubes directly outside the reaction tubes, along with matching heat source delivery pipelines, resulting in a complex overall reactor structure and occupying a significant amount of production space. Utility Model Content

[0003] The purpose of this invention is to provide an aniline acetonitrile continuous reactor to solve the problem mentioned in the background art that traditional continuous reactors usually have heat exchange tubes directly installed on the outside of the reaction tubes and heat source delivery pipes matched to the heat exchange tubes, resulting in a complicated overall reactor structure and occupying a large production space.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an aniline-based acetonitrile continuous reactor, comprising reaction tubes arranged vertically, heat exchange tubes on the outer surface of the reaction tubes, and interconnecting bends between adjacent reaction tubes arranged alternately, connecting the reaction tubes in an S-shape. A first support column and a second support column are respectively provided on the rear sides of the reaction tubes. Support frames are provided at positions corresponding to the reaction tubes on both the first and second support columns. The heat exchange tubes abut against the support frames. Heat exchange chambers are provided inside both the first and second support columns. Heat exchange connecting pipes are provided on the side walls of the first and second support columns and between the support frames, and are connected to the heat exchange tubes.

[0005] Preferably, both ends of the reaction tube and both ends of the connecting bend are provided with connecting flanges. The connecting bend is connected to the reaction tube through the connecting flanges. A sampling tube and a feeding tube are respectively provided at the top and bottom of the middle position of the outer section of the connecting bend.

[0006] Preferably, the upper end of the first support column is provided with a heat exchange source inlet, which is connected to the heat exchange cavity of the first support column.

[0007] Preferably, the upper end of the second support column is provided with a heat exchange source output port, and the heat exchange source output port is connected to the heat exchange cavity of the second support column.

[0008] Preferably, both the first support column and the second support column are closed structures, and the lower ends of both the first support column and the second support column are provided with fixed bases.

[0009] Compared with the prior art, the beneficial effects of this utility model are: based on the traditional continuous reactor, it retains the design of directly setting the heat exchange tube on the outside of the reaction tube, and integrates the support structure of the reaction tube with the heat exchange tube and the matching heat source delivery pipeline. The support structure provides support function while providing heat exchange source delivery function, simplifying the overall structure of the reactor and reducing the production space occupied by the reaction equipment. Attached Figure Description

[0010] Figure 1 This is an isometric view of the main structure of this utility model;

[0011] Figure 2 This is an isometric sectional view of the main structure of this utility model;

[0012] Figure 3 This is a front view schematic diagram of the main structure of this utility model;

[0013] Figure 4 This is a top sectional view of the main structure of this utility model;

[0014] Figure 5 This is a top view of the main structure of this utility model.

[0015] In the diagram: 1-Reaction tube, 2-Heat exchange tube, 3-Connecting bend, 4-Support column 1, 5-Support column 2, 6-Support frame, 7-Heat exchange chamber, 8-Heat exchange connecting pipe, 9-Connecting flange, 10-Sampling tube, 11-Feeding pipe, 12-Heat exchange source inlet, 13-Heat exchange source outlet, 14-Heat exchange source outlet. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-5This utility model provides an aniline-based acetonitrile continuous reactor, including reaction tubes 1 arranged vertically. Heat exchange tubes 2 are provided on the outer surface of each reaction tube 1. Interleaving bends 3 are staggered between adjacent reaction tubes 1, allowing the reaction tubes 1 to be sequentially connected in an S-shape via the interleaving bends 3. A first support column 4 and a second support column 5 are respectively provided on the rear sides of each reaction tube 1. Support frames 6 are provided at positions corresponding to the reaction tubes 1 on both the first and second support columns 4 and 5. The heat exchange tubes 2 abut against the support frames 6. Heat exchange chambers 7 are provided inside both the first and second support columns 4 and 5. A heat exchange connecting pipe 8 is provided on the sidewalls of the first and second support columns 4 and between the support frames 6, and the heat exchange connecting pipe 8 is connected to the heat exchange tubes 2.

[0018] In use, a first support column 4 and a second support column 5 are set up respectively. A support frame 6 is set on the outside of the first support column 4 and the second support column 5. The reaction tube 1 carrying the heat exchange tube 2 is arranged vertically between the first support column 4 and the second support column 5 through the support frame 6. The inner cavity of the heat exchange tube 2 is connected to the heat exchange chamber 7 of the first support column 4 and the second support column 5 through the heat exchange connecting pipe 8. The heat exchange source is input into the heat exchange chamber 7 of the first support column 4. The heat exchange source is input into the heat exchange tube 2 through the heat exchange connecting pipe 8. The heat exchange source inside the heat exchange tube 2 exchanges heat with the reaction tube 1, raising the reaction temperature inside the reaction tube 1. The heat exchange source that has completed the heat exchange is input into the heat exchange chamber 7 of the second support column 5 through the heat exchange connecting pipe 8 and output to the outside. A connecting bend 3 is set between adjacent reaction tubes 1 to form an S-shaped continuous reaction structure to ensure reaction efficiency.

[0019] Both ends of the reaction tube 1 and both ends of the connecting bend 3 are provided with connecting flanges 9. The connecting bend 3 is connected to the reaction tube 1 through the connecting flanges 9. A sampling tube 10 and a feeding tube 11 are respectively provided at the middle position of the outer section of the connecting bend 3. The connecting bend 3 and the reaction tube 1 are connected through the connecting flanges 9. The sampling tube 10 and the feeding tube 11 are respectively provided on the outer side of the connecting bend 3. The aniline acetonitrile inside the reaction tube 1 is sampled and detected through the sampling tube 10, and aniline acetonitrile is replenished into the reaction tube 1 through the feeding tube 11.

[0020] The upper end of the first support column 4 is provided with a heat exchange source inlet 12, which is connected to the heat exchange cavity 7 of the first support column 4. The heat exchange source is input into the heat exchange cavity 7 of the first support column 4 through the heat exchange source inlet 12.

[0021] The upper end of the second support column 5 is provided with a heat exchange source output port 13. The heat exchange source output port 13 is connected to the heat exchange cavity 7 of the second support column 5. The heat exchange source inside the heat exchange cavity 7 of the second support column 5 is output to the outside through the heat exchange source output port 13.

[0022] Both the first support column 4 and the second support column 5 are closed structures. The lower ends of the first support column 4 and the second support column 5 are provided with fixed bases 14, which fix the first support column 4 and the second support column 5 to the ground.

[0023] 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. An aniline-based acetonitrile continuous reactor, characterized in that: The system includes a reaction tube (1) arranged vertically. A heat exchange tube (2) is provided on the outer surface of the reaction tube (1). Interleaving bends (3) are provided between adjacent reaction tubes (1) to connect the reaction tubes (1) in an S-shape. A first support column (4) and a second support column (5) are provided on the rear sides of the reaction tube (1). A support frame (6) is provided at the position corresponding to the reaction tube (1) of the first support column (4) and the second support column (5). The heat exchange tube (2) rests on the support frame (6). A heat exchange chamber (7) is provided inside the first support column (4) and the second support column (5). A heat exchange connecting pipe (8) is provided on the side wall of the first support column (4) and the second support column (5) and between the support frame (6). The heat exchange connecting pipe (8) is connected to the heat exchange tube (2).

2. The aniline-acetonitrile continuous reactor according to claim 1, characterized in that: Both ends of the reaction tube (1) and both ends of the connecting bend (3) are provided with connecting flanges (9). The connecting bend (3) is connected to the reaction tube (1) through the connecting flanges (9). The outer section of the connecting bend (3) is provided with a sampling tube (10) and a feeding tube (11) at the top and bottom respectively.

3. The aniline-acetonitrile continuous reactor according to claim 1, characterized in that: The upper end of the first support column (4) is provided with a heat exchange source inlet (12), which is connected to the heat exchange chamber (7) of the first support column (4).

4. The aniline-acetonitrile continuous reactor according to claim 1, characterized in that: The upper end of the second support column (5) is provided with a heat exchange source output port (13), which is connected to the heat exchange chamber (7) of the second support column (5).

5. The aniline-acetonitrile continuous reactor according to claim 1, characterized in that: Both the first support column (4) and the second support column (5) are closed structures, and the lower ends of both the first support column (4) and the second support column (5) are provided with fixed bases (14).

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