A hydrogenation reactor

Abstract

This utility model relates to the field of chemical equipment technology, specifically a hydrogenation reactor, including a reactor body. A discharge pipe is fixedly connected to the bottom of the reactor body, and an outlet collector is fixedly connected to the bottom wall of the reactor body at the upper end of the discharge pipe. A mixing assembly is provided in the upper part of the reactor body, including a fixed shaft, a feed pipe, stirring blades, a rotary joint, a transmission gear, a feed pipe, a hydrogenation pipe, an exhaust port, a drive gear, an electric motor, a distributor pipe, a dispersion disc, and a stirring rod. Hydrogen is simultaneously delivered to the feed pipe and the interior of the reactor body through the hydrogenation pipe, so that the crude oil and hydrogen are premixed inside the feed pipe. Then, the pre-hydrogenated crude oil is further mixed inside the reactor body, effectively improving the hydrogenation mixing efficiency of crude oil, especially for the hydrogenation of large quantities of crude oil, further improving the product preparation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to a hydrogenation reactor. Background Technology

[0002] Hydrogenation reactors are a very important piece of equipment in organic chemistry laboratories and actual production processes. They can be used not only as containers for hydrogenation reactions, but also in situations where liquids and gases need to be thoroughly mixed. Hydrogenation reactors are often used to hydrogenate the most difficult-to-utilize heavy fraction of petroleum industry, such as residue oil, into light oil, thereby producing gasoline and diesel.

[0003] CN120054348A discloses a suspended bed hydrogenation reactor, comprising a housing with a hollow tube penetrating and rotatably connected to the housing. Two L-shaped hollow rods are fixedly connected to the outer wall of the hollow tube, and multiple stirring rods are fixedly connected to the outer wall of each L-shaped hollow rod. Multiple through holes are provided on each L-shaped hollow rod, and a product discharge port is fixedly connected to the housing. By contacting the feedstock oil with hydrogen discharged through the multiple through holes, and combining the rotation of the hollow tube, L-shaped hollow rods, and stirring rods to agitate the material, sufficient contact between hydrogen and material is achieved, resulting in a good reaction effect. The rotation of the hollow tube, in conjunction with the reciprocating screw, allows the reciprocating screw, L-shaped hollow rods, and stirring rods to rotate and move up and down simultaneously, further enhancing the contact between the material and hydrogen, resulting in a more complete and sufficient reaction. This significantly improves the effect and quality of the feedstock oil hydrogenation reaction and increases production efficiency.

[0004] The device discharges raw oil into the reactor and then reacts it with hydrogen gas discharged through the through hole. Although the hollow tube rotates and works in conjunction with the reciprocating screw, the reciprocating screw, the L-shaped hollow rod, and the stirring rod can rotate and move up and down to improve the contact between the material and the hydrogen gas, when there is a large amount of raw oil, it still requires a long time to stir to ensure that it is fully mixed, resulting in low mixing efficiency.

[0005] Therefore, it is necessary to invent a hydrogenation reactor to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a hydrogenation reactor to solve the problem that when there is a large amount of crude oil, it still requires a long time to stir in order to achieve sufficient mixing, resulting in low mixing efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a hydrogenation reactor, comprising a reactor body, a discharge pipe fixedly connected to the bottom of the reactor body, an outlet collector fixedly connected to the bottom wall of the reactor body at the upper end of the discharge pipe, and a mixing assembly provided in the upper half of the reactor body, the mixing assembly comprising a fixed shaft, a feed pipe, stirring blades, a rotary joint, a transmission gear, a feed pipe, a hydrogenation pipe, an exhaust port, a drive gear, an electric motor, a diversion pipe, a dispersion disc, and a stirring rod.

[0008] By adopting the above technical solution, the feed pipe, injection pipe and diversion pipe work together to inject crude oil into the interior of the reactor body. The hydrogenation pipe delivers hydrogen to the injection pipe and the interior of the reactor body through the exhaust port, so that the crude oil and hydrogen are premixed inside the injection pipe. Then, the pre-hydrogenated crude oil is further mixed inside the reactor body, which effectively improves the hydrogenation mixing efficiency of crude oil, especially for the hydrogenation of large amounts of crude oil, further improving the product preparation efficiency.

[0009] Optionally, the fixed shaft is fixedly connected to the middle position of the upper end of the reactor body, and the injection pipe is rotatably connected to the inside of the fixed shaft.

[0010] By adopting the above technical solution, the injection tube rotates inside the fixed shaft.

[0011] Optionally, the rotary joint is fixedly connected to the upper end of the fixed shaft, and the lower end of the feed pipe is rotatably connected to the rotary joint.

[0012] By adopting the above technical solution, the injection tube rotates around the lower end of the feed tube via a rotary joint.

[0013] Optionally, multiple diversion pipes are fixedly connected to the side wall of the injection pipe near the lower end, and a dispersing disc is fixedly connected to the lower end of each of the multiple diversion pipes, and a stirring rod is fixedly connected to the lower end of each of the multiple dispersing discs.

[0014] By adopting the above technical solution, the diversion pipe and the dispersion plate work together to evenly disperse the crude oil inside the reactor body, further improving the mixing efficiency.

[0015] Optionally, the electric motor is fixedly mounted on the side of the fixed shaft, and the drive gear is fixedly connected to the output end of the electric motor.

[0016] By adopting the above technical solution, the electric motor is used to drive the drive gear to rotate.

[0017] Optionally, the transmission gear is fixedly connected to the surface of the injection tube at a position between the rotary joint and the fixed shaft, and the driving gear meshes with the transmission gear.

[0018] By adopting the above technical solution, the drive gear rotates during the rotation of the drive gear, which in turn drives the injection tube to rotate.

[0019] Optionally, the hydrogenation tube is disposed inside the injection tube and the feed tube, with the upper end of the hydrogenation tube fixedly connected to the feed tube and the middle part of the hydrogenation tube rotatably connected to the lower end of the injection tube.

[0020] By adopting the above technical solution, the hydrogenation pipe simultaneously delivers hydrogen into the injection pipe and the reactor body.

[0021] Optionally, the inner wall of the injection pipe is fixedly connected with multiple sets of inclined stirring blades.

[0022] By adopting the above technical solution, the rotation of the injection pipe drives the stirring blades to rotate, thereby stirring the crude oil inside.

[0023] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0024] 1. This utility model delivers hydrogen to both the injection pipe and the reactor body simultaneously through a hydrogenation pipe, allowing the crude oil and hydrogen to be premixed inside the injection pipe. Then, the pre-hydrogenated crude oil is further mixed inside the reactor body, effectively improving the hydrogenation mixing efficiency of the crude oil, especially for the hydrogenation of large quantities of crude oil, further improving the product preparation efficiency.

[0025] 2. This utility model uses a combination of a diversion pipe and a dispersion plate to evenly disperse crude oil inside the reactor body, while the stirring rod further stirs the crude oil, thereby improving the hydrogenation mixing efficiency of the crude oil. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the hybrid component structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the internal structure of the injection tube of this utility model;

[0030] Figure 5 This utility model Figure 4 A schematic diagram of the structure at point A in the diagram.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Reactor body; 11. Discharge pipe; 12. Outlet collector; 2. Mixing assembly; 21. Fixed shaft; 22. Feed pipe; 221. Stirring blades; 23. Rotary joint; 24. Drive gear; 25. Feed pipe; 26. Hydrogenation pipe; 261. Exhaust port; 27. Drive gear; 28. Electric motor; 29. ​​Diverter pipe; 210. Dispersion disc; 211. Stirring rod. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0034] This utility model provides, for example Figures 1 to 4 The hydrogenation reactor shown includes a reactor body 1. A discharge pipe 11 is fixedly connected to the bottom of the reactor body 1. An outlet collector 12 is fixedly connected to the bottom wall of the reactor body 1 at the upper end of the discharge pipe 11. A mixing assembly 2 is provided in the upper half of the reactor body 1. The mixing assembly 2 includes a fixed shaft 21, a feed pipe 22, stirring blades 221, a rotary joint 23, a transmission gear 24, a feed pipe 25, a hydrogenation pipe 26, an exhaust port 261, a drive gear 27, an electric motor 28, and a diversion pipe 2. 9. The dispersing disc 210 and the stirring rod 211 are fixedly connected to the middle of the upper end of the reactor body 1. The feed pipe 22 is rotatably connected to the inside of the fixed shaft 21. The rotary joint 23 is fixedly connected to the upper end of the fixed shaft 21. The lower end of the feed pipe 25 is rotatably connected to the rotary joint 23. A multi-component flow pipe 29 is fixedly connected to the side wall of the feed pipe 22 near the lower end. The lower end of each multi-component flow pipe 29 is fixedly connected to the dispersing disc 210. The lower end of each dispersing disc 210 is fixedly connected to the stirring rod 211.

[0035] The feed pipe 25, injection pipe 22 and diversion pipe 29 are used to inject crude oil into the reactor body 1, the hydrogenation pipe 26 is used to inject hydrogen into the reactor body 1, the outlet collector 12 is used to filter the mixed oil, and the discharge pipe 11 is used to discharge the hydrogenated oil.

[0036] During the preparation process, crude oil is injected into the interior of reactor body 1 through feed pipe 25, injection pipe 22, diversion pipe 29 and dispersion plate 210. Diversion pipe 29 and dispersion plate 210 work together to evenly disperse crude oil inside reactor body 1. At the same time, hydrogen is injected into the interior of reactor body 1 through hydrogen injection pipe 26. Meanwhile, multiple sets of stirring rods 211 stir crude oil and hydrogen to accelerate their mixing.

[0037] See Figures 3 to 5An electric motor 28 is fixedly mounted on the side of a fixed shaft 21. A drive gear 27 is fixedly connected to the output end of the electric motor 28. A transmission gear 24 is fixedly connected to the surface of the injection pipe 22 at a position between the rotary joint 23 and the fixed shaft 21. The drive gear 27 and the transmission gear 24 are meshed together. A hydrogenation pipe 26 is disposed inside the injection pipe 22 and the feed pipe 25. The upper end of the hydrogenation pipe 26 is fixedly connected to the feed pipe 25. The middle part of the hydrogenation pipe 26 is rotatably connected to the lower end of the injection pipe 22. Multiple sets of inclined stirring blades 221 are fixedly connected to the inner wall of the injection pipe 22.

[0038] In addition, during the injection process, the electric motor 28 is started. The output end of the electric motor 28 drives the drive gear 27 to rotate. The drive gear 27 drives the injection pipe 22 to rotate inside the fixed shaft 21 through the transmission gear 24. The injection pipe 22 drives the multi-component flow pipe 29 and the stirring rod 211 to rotate, thereby evenly dispersing the crude oil inside the reactor body 1. At the same time, the stirring rod 211 rotates around the axis of the injection pipe 22 to stir the crude oil.

[0039] Meanwhile, during the hydrogenation process, the hydrogenation pipe 26 discharges hydrogen gas into the injection pipe 22 and the reactor body 1 through multiple sets of exhaust holes 261. After the hydrogen gas is added into the injection pipe 22, it will initially mix with the crude oil inside the injection pipe 22. As the injection pipe 22 rotates, it will drive the stirring blades 221 to rotate, thereby accelerating the mixing of the crude oil and hydrogen gas inside the injection pipe 22. With the rotation of the injection pipe 22, the pre-hydrogenated oil is sent into the reactor body 1 and mixed with the hydrogen gas inside the reactor body 1 again, thereby effectively improving the hydrogenation efficiency of the crude oil.

[0040] The working principle of this invention is as follows: Hydrogen gas is simultaneously delivered to the injection pipe 22 and the reactor body 1 through the hydrogenation pipe 26, so that the crude oil and hydrogen gas are premixed inside the injection pipe 22. Then, the pre-hydrogenated oil is further mixed inside the reactor body 1, which effectively improves the hydrogenation mixing efficiency of the crude oil, especially for the hydrogenation of large quantities of crude oil, further improving the product preparation efficiency. At the same time, the crude oil is evenly dispersed inside the reactor body 1 through the combination of the diversion pipe 29 and the dispersion plate 210, and the stirring rod 211 stirs the crude oil again, further improving the hydrogenation mixing efficiency of the crude oil.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A hydrogenation reactor, comprising a reactor body (1), characterized in that: The bottom of the reactor body (1) is fixedly connected to a discharge pipe (11), and the bottom wall of the reactor body (1) is fixedly connected to an outlet collector (12) at the upper end of the discharge pipe (11). The upper half of the reactor body (1) is provided with a mixing component (2), which includes a fixed shaft (21), a feed pipe (22), a stirring blade (221), a rotary joint (23), a transmission gear (24), a feed pipe (25), a hydrogenation pipe (26), an exhaust port (261), a drive gear (27), an electric motor (28), a diversion pipe (29), a dispersion disc (210), and a stirring rod (211).

2. A hydrogenation reactor according to claim 1, characterized in that: The fixed shaft (21) is fixedly connected to the middle position of the upper end of the reactor body (1), and the injection pipe (22) is rotatably connected to the inside of the fixed shaft (21).

3. A hydrogenation reactor according to claim 2, characterized in that: The rotary joint (23) is fixedly connected to the upper end of the fixed shaft (21), and the lower end of the feed pipe (25) is rotatably connected to the rotary joint (23).

4. A hydrogenation reactor according to claim 1, characterized in that: Multiple diversion pipes (29) are fixedly connected to the side wall of the injection pipe (22) near the lower end. The lower ends of the multiple diversion pipes (29) are all fixedly connected to a dispersing disc (210), and the lower ends of the multiple dispersing discs (210) are all fixedly connected to a stirring rod (211).

5. A hydrogenation reactor according to claim 1, characterized in that: The electric motor (28) is fixedly mounted on the side of the fixed shaft (21), and the drive gear (27) is fixedly connected to the output end of the electric motor (28).

6. A hydrogenation reactor according to claim 5, characterized in that: The transmission gear (24) and the surface of the injection tube (22) are fixedly connected at a position between the rotary joint (23) and the fixed shaft (21), and the driving gear (27) is meshed with the transmission gear (24).

7. A hydrogenation reactor according to claim 1, characterized in that: The hydrogenation tube (26) is disposed inside the injection tube (22) and the feed tube (25). The upper end of the hydrogenation tube (26) is fixedly connected to the feed tube (25), and the middle part of the hydrogenation tube (26) is rotatably connected to the lower end of the injection tube (22).

8. A hydrogenation reactor according to claim 1, characterized in that: The inner wall of the injection pipe (22) is fixedly connected with multiple sets of inclined stirring blades (221).

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