Fixed bed continuous catalytic hydrogenation device

Abstract

The utility model discloses a fixed bed continuous catalytic hydrogenation device which comprises a fixed bed shell, a feed hopper fixedly connected with the fixed bed shell is arranged at the top of the fixed bed shell, a discharge hopper fixedly connected with the fixed bed shell is arranged at the bottom of the fixed bed shell, and a motor is fixedly connected to the side wall of the fixed bed shell. The output end of the motor is fixedly connected with a hollow rod, a hydrogen pipe is arranged on one side of the fixed bed shell, the hollow rod and the hydrogen pipe are jointly provided with a rotating joint, the outer wall of the hollow rod is fixedly connected with a one-way valve, and the outer wall of the hollow rod is fixedly connected with a plurality of hollow rotating rods which are distributed at equal intervals. According to the utility model, hydrogen is discharged through the plurality of through holes, so that the hydrogen can be uniformly distributed in the fixed bed shell, materials can be stirred through the rotation of the hollow rotating rod, so that the materials are uniformly heated, the gasified materials are in full contact with the uniformly distributed hydrogen, and the reaction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of catalytic hydrogenation devices, in particular to a fixed-bed continuous catalytic hydrogenation device. Background Art

[0002] The prior art discloses a fixed bed for continuous catalytic hydrogenation and a hydrogenation reaction method thereof with application number CN202410030511.1. In the authorized patent, the catalyst is first loaded into the catalytic hydrogenation reactor of the fixed bed reactor, and nitrogen is introduced under normal pressure to expel the air in the catalytic hydrogenation reactor; the nitrogen is turned off, and fresh hydrogen is introduced into the fixed bed; the melted raw material flows from the raw material tank into the boiler of the fixed bed, and when the liquid level is between the highest and lowest level lines, the boiler, bed and separator start to be heated to the set temperature respectively; the raw material reaches the boiling point under pressure and temperature, and after gasification, it passes through the bed to react with hydrogen to undergo a hydrogenation reaction.

[0003] In the above-mentioned authorized patent, hydrogen reacts with the gasified material, but there is a problem that the effective contact area between hydrogen and the material is insufficient, and the contact between hydrogen and the material is insufficient, resulting in the reaction not being able to proceed fully. To solve the above-mentioned problem, the present application proposes a fixed-bed continuous catalytic hydrogenation device. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a fixed-bed continuous catalytic hydrogenation device, in which hydrogen is discharged through multiple through holes so that the hydrogen can be evenly distributed in the fixed bed shell, and the rotation of the hollow rotating rod can stir the material so that it is heated evenly, and the gasified material is fully in contact with the evenly distributed hydrogen, thereby improving the efficiency of the reaction.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A fixed-bed continuous catalytic hydrogenation device comprises a fixed bed shell, the top of the fixed bed shell is provided with a feed hopper fixedly connected to it, the bottom of the fixed bed shell is provided with a discharge hopper fixedly connected to it, the side wall of the fixed bed shell is fixedly connected to a motor, the output end of the motor is fixedly connected to a hollow rod, the hollow rod passes through the fixed bed shell and is rotatably connected to it, a hydrogen pipe is provided on one side of the fixed bed shell, the hollow rod and the hydrogen pipe are jointly equipped with a rotary joint, the outer wall of the hollow rod is fixedly connected to a one-way valve, the outer wall of the hollow rod is fixedly connected to a plurality of hollow rotating rods distributed at equal intervals, two heating plates are fixedly connected to the inner bottom of the fixed bed shell, the inner wall of the fixed bed shell is fixedly connected to a temperature sensor, the front end of the fixed bed shell is fixedly connected to a control panel, two catalytic mechanisms are provided on the fixed bed shell, the top of the fixed bed shell is provided with a gas outlet hopper connected to it, and the outer wall of the gas outlet hopper is fixedly connected to a safety valve.

[0007] Preferably, the top of the feed hopper is rotatably connected to a rotary cover, the top of the rotary cover is fixedly connected to a U-shaped handle, and the outer wall of the U-shaped handle is provided with a protective cover.

[0008] Preferably, an electromagnetic valve is installed on the outer wall of the discharge hopper.

[0009] Preferably, the plurality of hollow rotating rods are all connected to the hollow rod, and each of the hollow rotating rods is provided with a through hole.

[0010] Preferably, the catalytic mechanism includes a filter frame fixedly connected to the inner wall of the fixed bed shell, multiple catalysts are placed in the filter frame, a through opening is opened on the fixed bed shell, the through opening is connected to the filter frame, and the inner wall of the through opening is threadedly connected to a rotating sealing cover.

[0011] Preferably, three support legs distributed at equal intervals are fixedly connected to the bottom of the fixed bed shell, and each of the support legs is installed and fixed by welding.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Hydrogen is injected from the outside through the hydrogen pipe, and the hydrogen is discharged through the hydrogen pipe, hollow rod, multiple hollow rotating rods and through holes, so that the material is fully in contact with the hydrogen. The hydrogen is discharged through multiple through holes so that the hydrogen can be evenly distributed in the fixed bed shell.

[0014] 2. The heating plate can heat the material to a suitable temperature so that the material reaches the boiling point and vaporizes. The temperature sensor can detect the real-time temperature of the material, and the temperature is displayed on the control panel for people to understand. The reaction can be kept at the most suitable temperature to improve the efficiency of the reaction.

[0015] 3. The output end of the motor drives the hollow rod and multiple hollow rotating rods to rotate. The rotation of multiple hollow rotating rods can stir the material so that it is heated evenly. The gasified material is fully in contact with the evenly distributed hydrogen, and the hydrogen ejected from the through hole is in full contact with the material. The gasified material and hydrogen can be in more full contact, so that the reaction is more complete.

[0016] In summary, hydrogen can be evenly distributed in the fixed bed shell by being discharged through multiple through holes, and the material can be stirred by the rotation of the hollow rotating rod so that it is heated evenly. The gasified material is in full contact with the evenly distributed hydrogen, thereby improving the efficiency of the reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a fixed-bed continuous catalytic hydrogenation device proposed in the utility model;

[0018] Figure 2 This is a cross-sectional view of a fixed-bed continuous catalytic hydrogenation device proposed in the present utility model.

[0019] In the figure: 1 fixed bed shell, 2 feed hopper, 3 rotary cover, 4 discharge hopper, 5 motor, 6 hollow rod, 7 hollow rotating rod, 8 rotary joint, 9 hydrogen pipe, 10 one-way valve, 11 heating plate, 12 temperature sensor, 13 control panel, 14 filter frame, 15 catalyst, 16 rotary sealing cover, 17 gas outlet hopper, 18 safety valve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-Figure 2 A fixed-bed continuous catalytic hydrogenation device comprises a fixed bed shell 1, a feed hopper 2 fixedly connected to the top of the fixed bed shell 1, a rotary cover 3 rotatably connected to the top of the feed hopper 2, a lock buckle is provided between the feed hopper 2 and the rotary cover 3, which can seal and lock the two together. This technology is a prior art and will not be described in detail here. A U-shaped handle is fixedly connected to the top of the rotary cover 3, and a protective cover is provided on the outer wall of the U-shaped handle to increase comfort. A discharge hopper 4 fixedly connected to the bottom of the fixed bed shell 1 is provided, and an electromagnetic valve is installed on the outer wall of the discharge hopper 4 to control the opening and closing of the discharge hopper 4.

[0022] A motor 5 is fixedly connected to the side wall of the fixed bed shell 1, and a hollow rod 6 is fixedly connected to the output end of the motor 5. The hollow rod 6 passes through the fixed bed shell 1 and is rotatably connected thereto. A hydrogen pipe 9 is provided on one side of the fixed bed shell 1, and one end of the hydrogen pipe 9 is connected to a high-pressure hydrogen tank, which can be used to provide hydrogen. A rotary joint 8 is installed together with the hollow rod 6 and the hydrogen pipe 9. A one-way valve 10 is fixedly connected to the outer wall of the hollow rod 6. The one-way valve 10 can allow hydrogen to flow and prevent other materials from passing through.

[0023] The outer wall of the hollow rod 6 is fixedly connected to a plurality of hollow rotating rods 7 distributed at equal intervals. The plurality of hollow rotating rods 7 are connected to the hollow rod 6. Each hollow rotating rod 7 is penetrated by a through hole. Hydrogen is discharged through the through hole to fully contact the material, and the two react fully under the action of the catalyst 15. Two heating plates 11 are fixedly connected to the inner bottom of the fixed bed shell 1, which can heat the material to a suitable temperature, thereby improving the efficiency of the reaction. A temperature sensor 12 is fixedly connected to the inner wall of the fixed bed shell 1 to monitor the temperature in real time. A control panel 13 is fixedly connected to the front end of the fixed bed shell 1, so that the temperature value can be timely understood.

[0024] Two catalytic mechanisms are provided on the fixed bed shell 1. The catalytic mechanism includes a filter frame 14 fixedly connected to the inner wall of the fixed bed shell 1, which can ensure sufficient contact between the material and the catalyst 15 and improve the reaction rate. Multiple catalysts 15 are placed in the filter frame 14. A through opening is opened on the fixed bed shell 1, which is connected to the filter frame 14. The inner wall of the through opening is threadedly connected to a rotary sealing cover 16, which can be removed by rotating the rotary sealing cover 16 to replenish the catalyst 15.

[0025] The top of the fixed bed shell 1 is provided with an air outlet hopper 17 connected to it. The outer wall of the air outlet hopper 17 is fixedly connected to a safety valve 18 to ensure air pressure safety. The bottom of the fixed bed shell 1 is fixedly connected to three support legs distributed at equal intervals, and each support leg is installed and fixed by welding.

[0026] In the present application, the material is chloro-1-nitrobenzene, the catalyst is granular activated carbon, and chloro-1-nitrobenzene and hydrogen are reacted under the action of the catalyst.

[0027] In the present invention, the staff opens the rotary cover 3, pours the material into the fixed bed shell 1 through the feed hopper 2, and then closes the rotary cover 3 and locks and seals the feed hopper 2. Hydrogen is injected from the outside through the hydrogen pipe 9, and the hydrogen is discharged through the hydrogen pipe 9, the hollow rod 6, the multiple hollow rotating rods 7 and the through hole, so that the material is fully in contact with the hydrogen. Under the action of the catalyst 15 in the filter frame 14, the material is fully mixed and reacted; during the reaction, the material can be heated to a suitable temperature by the heating plate 11 so that the material reaches the boiling point and gasifies. The temperature sensor 12 can detect the real-time temperature of the material, and the temperature is displayed through the control panel 13 for people to understand, so that the reaction can be kept at the most suitable temperature and the efficiency of the reaction can be improved; the motor 5 is started, and the hollow rod 6 and multiple hollow rotating rods 7 are driven to rotate through the output end of the motor 5. The rotation of the multiple hollow rotating rods 7 can stir the material so that it is heated evenly, and the gasified material is fully in contact with the evenly distributed hydrogen, so that the hydrogen ejected from the through hole is fully in contact with the material, and the gasified material and hydrogen can be more fully in contact, so that the reaction is more complete.

[0028] The utility model can stir the material by discharging hydrogen through multiple through holes and rotating the hollow rotating rod, so that the gasified material is fully in contact with the evenly distributed hydrogen, thereby solving the problem in the prior art that the effective contact area between hydrogen and the material is insufficient, the hydrogen and the material are not in sufficient contact, and the reaction cannot be fully carried out.

Claims

1. A fixed bed continuous catalytic hydrogenation device, comprising a fixed bed shell (1), characterized in that: The top of the fixed bed shell (1) is provided with a feed hopper (2) fixedly connected thereto, the bottom of the fixed bed shell (1) is provided with a discharge hopper (4) fixedly connected thereto, the side wall of the fixed bed shell (1) is fixedly connected to a motor (5), the output end of the motor (5) is fixedly connected to a hollow rod (6), the hollow rod (6) passes through the fixed bed shell (1) and is rotatably connected thereto, a hydrogen pipe (9) is provided on one side of the fixed bed shell (1), the hollow rod (6) and the hydrogen pipe (9) are jointly equipped with a rotary joint (8), the outer wall of the hollow rod (6) is fixedly connected to a single The fixed bed shell (1) is provided with a catalytic converter (10), a plurality of hollow rotating rods (7) distributed at equal intervals are fixedly connected to the outer wall of the hollow rod (6), two heating plates (11) are fixedly connected to the inner bottom of the fixed bed shell (1), a temperature sensor (12) is fixedly connected to the inner wall of the fixed bed shell (1), a control panel (13) is fixedly connected to the front end of the fixed bed shell (1), two catalytic mechanisms are provided on the fixed bed shell (1), a gas outlet hopper (17) connected thereto is provided at the top of the fixed bed shell (1), and a safety valve (18) is fixedly connected to the outer wall of the gas outlet hopper (17).

2. A fixed bed continuous catalytic hydrogenation device according to claim 1, characterized in that: The top of the feed hopper (2) is rotatably connected to a rotary cover (3), the top of the rotary cover (3) is fixedly connected to a U-shaped handle, and the outer wall of the U-shaped handle is provided with a protective cover.

3. A fixed bed continuous catalytic hydrogenation device according to claim 1, characterized in that: An electromagnetic valve is installed on the outer wall of the discharge hopper (4).

4. A fixed bed continuous catalytic hydrogenation device according to claim 1, characterized in that: The plurality of hollow rotating rods (7) are all connected to the hollow rod (6), and each hollow rotating rod (7) is provided with a through hole.

5. A fixed bed continuous catalytic hydrogenation device according to claim 1, characterized in that: The catalytic mechanism comprises a filter screen frame (14) fixedly connected to the inner wall of a fixed bed shell (1), a plurality of catalysts (15) are placed in the filter screen frame (14), a through opening is formed through the fixed bed shell (1), the through opening is connected to the filter screen frame (14), and a rotary sealing cover (16) is threadedly connected to the inner wall of the through opening.

6. A fixed bed continuous catalytic hydrogenation device according to claim 1, characterized in that: The bottom of the fixed bed shell (1) is fixedly connected to three support legs distributed at equal intervals, and each support leg is installed and fixed by welding.

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