Hydrogenation fluidized bed for aniline reduction process

Abstract

The utility model discloses a hydrogenation fluidized bed for aniline reduction process, which comprises a hydrogen compression tank, a hydrogen fluidized bed body is arranged outside the hydrogen compression tank, a heat exchanger is arranged between the hydrogen fluidized bed body and the hydrogen compression tank, and a fourth pipeline is connected between the hydrogen compression tank and the heat exchanger. A feeding hole is formed in the outer part of the distributor, and the feeding hole is meshed with the gear. When the hydrogenation fluidized bed for the aniline reduction process is used, a driving motor, a rotating rod, a gear, a feeding hole and a distributor are arranged, a hopper and the distributor are rotationally connected by adopting a clamping assembly, and the gear is meshed with the feeding hole, so that after the driving motor is started, an output shaft of the driving motor drives the rotating rod to rotate; the rotating rod rotates to drive the gear to rotate, and the distributor rotates along with the gear, so that aniline is extruded in a rotating manner through the distributor, and the uniformity of aniline passing through the hydrogenation fluidized bed is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogenation fluidized beds, in particular to a hydrogenation fluidized bed used in an aniline reduction process. Background Art

[0002] Aniline is an organic compound with the chemical formula CH7N. It is a colorless oily liquid that decomposes when heated to 370°C. It is slightly soluble in water and easily soluble in organic solvents such as ethanol and ether. Aniline is one of the most important amine substances. It is mainly used to make dyes, drugs, resins, and can also be used as a rubber vulcanization accelerator. It can also be used as a black dye. Its derivative methyl orange can be used as an indicator for acid-base titration. However, when aniline is reduced, a hydrogenation fluidized bed is required.

[0003] When the existing hydrogenation fluidized bed is used, aniline is treated in the hydrogenation fluidized bed by extrusion, but the extrusion direction is fixed and it is difficult to ensure uniformity, thereby reducing the uniformity of the aniline hydrogenation fluidized bed. Utility Model Content

[0004] The utility model aims to provide a hydrogenation fluidized bed for aniline reduction process, so as to solve the problem mentioned in the above background technology that when the commonly used existing hydrogenation fluidized bed on the market is used, aniline is treated in the hydrogenation fluidized bed by extrusion, but the extrusion direction is fixed and it is difficult to ensure uniformity, thereby reducing the uniformity of the aniline hydrogenation fluidized bed.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydrogenation fluidized bed for aniline reduction process, comprising a hydrogen compression tank, a hydrogen fluidized bed body is arranged outside the hydrogen compression tank, a heat exchanger is arranged between the hydrogen fluidized bed body and the hydrogen compression tank, a pipeline four is connected between the hydrogen compression tank and the heat exchanger, a feed port is connected to the top of the hydrogen compression tank, a pipeline one is connected to the bottom end of the hydrogen fluidized bed body, a hopper is fixed to the bottom end of the hydrogen fluidized bed body, and the hopper and the pipeline one are fixedly connected, a distributor is installed at the top of the hopper, and a clamping assembly is arranged between the distributor and the hopper, a driving motor is installed at the bottom end of one side of the hydrogen fluidized bed body, and a rotating rod is connected to the output end of the driving motor, a gear is installed at the top of the rotating rod, a feed port is arranged outside the distributor, and the feed port and the gear are meshed with each other.

[0006] Preferably, one side of the heat exchanger is connected to pipeline 2, and a pumping pump is installed between pipeline 2 and pipeline 1, and pipeline 3 is connected between the top of the hydrogen fluidized bed and the heat exchanger.

[0007] Preferably, a guide plate is fixed on the outside of the distributor, and a gear ring is provided at a position corresponding to the guide plate and on the inner wall of the hydrogen fluidized bed, and the guide plate is embedded in the gear ring.

[0008] Preferably, a plurality of reserved holes are distributed on the top of the distributor, and a column is fixed on the top of the distributor.

[0009] Preferably, the distributor and the hopper are connected in a U-shaped embedded manner via a snap-fit ​​assembly, and the hopper is arranged in a funnel shape.

[0010] Preferably, the top diameter of the distributor is equal to the inner diameter of the hydrogen fluidized bed, and the outer wall of the distributor near the top is tightly fitted with the inner wall of the hydrogen fluidized bed.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. A driving motor, a rotating rod, a gear, a feed port and a distributor are provided. Since the hopper and the distributor are connected by a clamping assembly for rotation, and the gear and the feed port are meshed, after the driving motor is started, the output shaft of the driving motor drives the rotating rod to rotate, and the rotating rod rotation drives the gear to rotate, and the distributor rotates accordingly, so that aniline is extruded through the distributor in a rotating manner, thereby improving the uniformity of aniline passing through the hydrogenation fluidized bed;

[0013] 2. By providing a guide plate and a gear ring, the distributor is stably located inside the hydrogen fluidized bed through the cooperation of the guide plate and the gear ring. When actuated by the gear, the distributor rotates smoothly and does not tilt in the hydrogen fluidized bed, thereby improving the stability of the distributor during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the partial cross-section structure of the utility model as a whole;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of a local hydrogen fluidized bed of the utility model;

[0017] Figure 4 This is a schematic diagram of the front view connection structure of the distributor and the hopper of the utility model.

[0018] In the figure: 1. Hydrogen compression tank; 2. Extraction pump; 3. Pipeline 1; 4. Drive motor; 5. Hydrogen fluidized bed; 6. Pipeline 2; 7. Pipeline 3; 8. Heat exchanger; 9. Pipeline 4; 10. Feed inlet; 11. Guide plate; 12. Hopper; 13. Rotating rod; 14. Gear; 15. Gear ring; 16. Snap-on assembly; 17. Distributor. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-4 The utility model provides a technical solution: a hydrogenation fluidized bed for aniline reduction process, comprising a hydrogen compression tank 1, a hydrogen fluidized bed body 5 is arranged outside the hydrogen compression tank 1, a heat exchanger 8 is arranged between the hydrogen fluidized bed body 5 and the hydrogen compression tank 1, a pipeline 9 is connected between the hydrogen compression tank 1 and the heat exchanger 8, a feed inlet 10 is connected to the top of the hydrogen compression tank 1, a pipeline 3 is connected to the bottom end of the hydrogen fluidized bed body 5, a hopper 12 is fixed to the bottom end of the hydrogen fluidized bed body 5, and the hopper 12 and the pipeline 3 are fixedly connected, and a distributor 17 is installed on the top of the hopper 12. The distributor 17 is a prior art and will not be described in detail here. A clamping assembly 16 is provided between the distributor 17 and the hopper 12, a driving motor 4 is installed at the bottom end of one side of the hydrogen fluidized bed 5, and a rotating rod 13 is connected to the output end of the driving motor 4, a gear 14 is installed at the top of the rotating rod 13, and a feed port 10 is provided outside the distributor 17, and the feed port 10 and the gear 14 are meshed with each other. The hydrogenation fluidized bed is connected to an external controller, and the hydrogenation fluidized bed is controlled by the external controller. The driving motor 4 is started, and the output shaft of the driving motor 4 drives the rotating rod 13 to rotate, and the rotating rod 13 rotates to drive the gear 14 to rotate, and the gear 14 and the feed port 10 mesh to drive the distributor 17 to rotate, and the gas distribution range is increased during the rotation of the distributor 17, thereby increasing the uniformity of gas distribution and improving the working efficiency of the hydrogenation fluidized bed.

[0021] One side of the heat exchanger 8 is connected to a pipe 2 6, and a pump 2 is installed between the pipe 2 6 and the pipe 1 3, and a pipe 3 7 is connected between the top of the hydrogen fluidized bed 5 and the heat exchanger 8. A guide plate 11 is fixed to the outside of the distributor 17, and a gear ring 15 is provided at a position corresponding to the guide plate 11 on the inner wall of the hydrogen fluidized bed 5, and the guide plate 11 is embedded in the gear ring 15. The gear ring 15 and the guide plate 11 cooperate to firmly mount the distributor 17 inside the hydrogen fluidized bed 5, and during the rotation of the distributor 17, the guide plate 11 rotates along the gear ring 15.

[0022] There are multiple reserved holes distributed on the top of the distributor 17, and the gas flows into the interior of the hydrogen fluidized bed 5 through the reserved holes. A column is fixed on the top of the distributor 17. The distributor 17 and the hopper 12 are connected in a U-shaped embedded manner through the clamping assembly 16, and the hopper 12 is arranged in a funnel shape. The distributor 17 rotates above the hopper 12, and the distributor 17 and the hopper 12 are not separated; the top diameter of the distributor 17 is equal to the internal diameter of the hydrogen fluidized bed 5, and the outer wall of the distributor 17 near the top is tightly fitted with the inner wall of the hydrogen fluidized bed 5. The sealing between the distributor 17 and the hydrogen fluidized bed 5 is improved, and the gas is prevented from flowing to the bottom of the distributor 17 and being discharged through the connecting hole between the hydrogen fluidized bed 5 and the rotating rod 13.

[0023] Working principle: aniline raw material enters into hydrogen compression tank 1, and pumping pump 2 is started. At this time, it flows into heat exchanger 8 through pipeline four 9, and then flows into hopper 12 through pipeline two 6 and pipeline one 3. Drive motor 4 is started, and the output shaft of drive motor 4 drives rotating rod 13 to rotate. At this time, gear 14 rotates, and distributor 17 is driven to rotate by meshing of gear 14 and feed port 10. The rotation of distributor 17 can make the material flow evenly into the interior of hydrogen fluidized bed 5, thereby accelerating the working efficiency of aniline hydrogenation fluidized bed. The material flows out through the reserved hole on distributor 17, first flows into heat exchanger 8 through pipeline three 7, and then flows out.

[0024] Although 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 of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrogenation fluidized bed for aniline reduction process, comprising a hydrogen compression tank (1), characterized in that: A hydrogen fluidized bed (5) is disposed outside the hydrogen compression tank (1), a heat exchanger (8) is disposed between the hydrogen fluidized bed (5) and the hydrogen compression tank (1), a pipeline (9) is connected between the hydrogen compression tank (1) and the heat exchanger (8), a feed inlet (10) is connected to the top of the hydrogen compression tank (1), a pipeline (3) is connected to the bottom of the hydrogen fluidized bed (5), a hopper (12) is fixed to the bottom of the hydrogen fluidized bed (5), and the hopper (12) and the pipeline (3) are connected to each other. ) are fixedly connected, a distributor (17) is installed at the top of the hopper (12), and a clamping assembly (16) is provided between the distributor (17) and the hopper (12), a driving motor (4) is installed at the bottom end of one side of the hydrogen fluidized bed (5), and a rotating rod (13) is connected to the output end of the driving motor (4), a gear (14) is installed at the top of the rotating rod (13), a feed port (10) is provided on the outside of the distributor (17), and the feed port (10) and the gear (14) are meshed with each other.

2. The hydrogenation fluidized bed for aniline reduction process according to claim 1, characterized in that: One side of the heat exchanger (8) is connected to pipeline 2 (6), and a pumping pump (2) is installed between pipeline 2 (6) and pipeline 1 (3). Pipeline 3 (7) is connected between the top of the hydrogen fluidized bed (5) and the heat exchanger (8).

3. The hydrogenation fluidized bed for aniline reduction process according to claim 1, characterized in that: A guide plate (11) is fixed to the outside of the distributor (17), a gear ring (15) is provided at a position corresponding to the guide plate (11) on the inner wall of the hydrogen fluidized bed (5), and the guide plate (11) is embedded in the gear ring (15).

4. The hydrogenation fluidized bed for aniline reduction process according to claim 1, characterized in that: A plurality of reserved holes are distributed on the top of the distributor (17), and a column is fixed on the top of the distributor (17).

5. The hydrogenation fluidized bed for aniline reduction process according to claim 1, characterized in that: The distributor (17) and the hopper (12) are connected in a U-shaped embedded manner via a clamping assembly (16), and the hopper (12) is arranged in a funnel shape.

6. The hydrogenation fluidized bed for aniline reduction process according to claim 1, characterized in that: The top diameter of the distributor (17) is equal to the inner diameter of the hydrogen fluidized bed (5), and the outer wall of the distributor (17) near the top is tightly fitted to the inner wall of the hydrogen fluidized bed (5).

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