A hydrogenation reactor

Abstract

This invention belongs to the field of hydrogenation reaction technology, specifically a hydrogenation reactor. The proposed design includes a tank body with a material inlet on one side and a product outlet on the other side. Supports are bolted to both sides of the tank body's outer wall, and each support is bolted to a base. Connecting frames are bolted to both sides of the tank body's inner wall, and an inner tank is bolted between the inner walls of the two connecting frames. Openings are provided on both sides of the inner tank, with conduits connecting the openings to the material inlet and the product outlet. Through holes are provided on one side of the inner tank's top and on the top of the tank body. This invention effectively stirs the material and catalyst, thereby improving the reaction efficiency between them and preventing a decrease in reaction efficiency due to poor mixing.

Description

Technical Field

[0001] This invention relates to the field of hydrogenation reactions, and more particularly to a hydrogenation reactor. Background Technology

[0002] Hydrogenation is a reaction process in which hydrogen interacts with a compound. It is usually carried out in the presence of a catalyst and has become one of the most important reaction processes in the chemical and petroleum refining industries.

[0003] A search revealed Chinese patent application CN112705123A, which discloses a hydrogenation reactor and a hydrogenation method. The hydrogenation reactor comprises an inner cylinder and a reactor shell. The inner cylinder is conical, and an annular space is formed between the inner cylinder and the reactor shell. The top and bottom of the inner cylinder are open, while the bottom edge is sealed to the inner wall of the reactor. The inner cylinder is filled with hydrogenation catalyst I, and the annular space is filled with hydrogenation catalyst II. The activity of hydrogenation catalyst I is higher than that of hydrogenation catalyst II. A hydrogen replenishment assembly is horizontally arranged in the middle of the reactor. The reactor feed inlet is connected to the bottom of the inner cylinder, and the reactor product outlet is connected to the lower part of the annular space. The material flows from bottom to top in the inner cylinder and from top to bottom in the annular space. This invention can effectively control the contact time between the material and different active catalysts in different temperature ranges during the hydrogenation reaction, achieving rapid reaction in the low and medium temperature ranges and suppressing side reactions in the high temperature range, thereby improving the hydrogenation reaction rate and reaction depth.

[0004] In existing hydrogenation reactors, materials and related catalysts are typically placed inside the reactor during operation. The reaction rate between the materials and catalysts is accelerated by stirring. However, due to the heavy weight of the materials and catalysts, existing stirring mechanisms cannot effectively stir them, resulting in poor reaction efficiency. Summary of the Invention

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hydrogenation reactor includes a tank body with a material inlet on one side and a product outlet on the other side. Supports are bolted to both sides of the outer wall of the tank body, and the bottoms of the two supports are bolted to bases. Connecting frames are bolted to both sides of the inner wall of the tank body, and an inner tank is bolted between the inner walls of the two connecting frames. Openings are provided on both sides of the inner tank, and conduits are provided between the openings and the material inlet, and between the openings and the product outlet. Through holes are provided on one side of the top of the inner tank and the top of the tank body, and a catalyst inlet is welded between the two through holes. Discharge ports are provided on one side of the bottom of the inner tank and the bottom of the tank body, and a slag discharge pipe is welded between the two discharge ports. A sealing plug is provided on the inner wall of the slag discharge pipe. A first stirring mechanism is provided inside the inner tank, and a second stirring mechanism is provided on one side of the first stirring mechanism.

[0007] Preferably, the first stirring mechanism includes two fixed frames, a rotating rod, a motor, and multiple stirring blades. The two fixed frames are fixed to both sides of the inner wall of the inner tank by bolts. The two fixed frames and the rotating rod are rotatably connected by bearings. One side of one of the fixed frames is connected to the motor by bolts. One end of the motor is fixedly connected to the rotating rod. The multiple stirring blades are fixed at equal intervals on the outer circumference of the rotating rod.

[0008] Preferably, both ends of one side of the stirring blade are provided with stirring ports, and a groove is provided on one side of the stirring blade, with the groove located between the two stirring ports. The second stirring mechanism is located between the two stirring ports and the groove.

[0009] Preferably, the second stirring mechanism includes a transmission assembly, two top blocks, a push plate, a push block, a support column, a screw, a threaded sleeve, multiple stirring teeth, and a reset plate. The two top blocks have multiple annularly distributed lifting ends on their respective sides. One side of one top block is rotatably connected to the stirring port via a bearing, and one side of the other top block is bolted to the push plate. Two ends of one side of the push plate are bolted to the stirring port with a first spring. Two ends of the other side of the push plate are bolted to both sides of the push block with a connecting rod. One end of the support column is bolted to one side of the stirring port, and the other end of the support column is welded to one end of the screw. The push block is slidably connected to the outer wall of the screw. The threaded sleeve is threadedly connected to the outer wall of the screw. Multiple stirring teeth are equidistantly fixed on the circumferential outer wall of the threaded sleeve. One side of the threaded sleeve contacts the push block, and the other side contacts the reset plate. The reset plate is slidably connected to the screw. Two ends of one side of the reset plate are bolted to the stirring port with a second spring. The transmission assembly is located inside the slot.

[0010] Preferably, the transmission assembly consists of a rack, a support rod, a first gear, a rotating shaft, and a second gear. The outer wall of the rack is bolted to the inner tank, and the rack is arc-shaped. The two ends of the support rod are rotatably connected to the two sides of the slot through bearings. The first gear is fixedly sleeved on the outer wall of the support rod and meshes with the rack. The two ends of the rotating shaft are rotatably connected to the two sides of the slot through bearings. The second gear is fixedly sleeved on the outer wall of the rotating shaft and meshes with the first gear. One end of the rotating shaft is welded to the top block.

[0011] Preferably, a vibration mechanism is provided on one side of the rotating rod, and the vibration mechanism cooperates with the first stirring mechanism.

[0012] Preferably, the vibration mechanism includes a shaft, a connecting sleeve, a top rod, and an impact head. One end of the shaft is welded to the rotating rod, and the shaft is Z-shaped. The connecting sleeve is rotatably sleeved on the outer wall of the shaft, and the two ends of the top rod are connected to the impact head and the connecting sleeve respectively by hinges.

[0013] Preferably, a positioning port is provided through one side of the top rod, and a positioning plate is slidably connected to the inner wall of the positioning port, with the two ends of the positioning plate welded to the inner tank.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. This invention, through the provision of a first and a second stirring mechanism, during the hydrogenation reaction, transports materials to the inner tank via a material inlet and a catalyst via a catalyst inlet. After transportation, the first stirring mechanism is activated to stir the materials and catalyst, thereby improving the reaction efficiency between them. During this process, a first gear rotates synchronously with the stirring blades. The first gear meshes with a rack, and its rotation, driven by this meshing, drives a second gear. This second gear, in turn, drives a rotating shaft to rotate synchronously. One of the top blocks rotates, and through the cooperation between the two top blocks, one top block rotates while driving the other top block to move to one side. As the other top block moves, it pushes the push plate to move. At this time, the push block slides on the outer wall of the screw under the action of the push plate. When the push block slides, it applies pressure to the threaded sleeve. Under the pressure and the action of the screw, the threaded sleeve rotates, thereby further agitating the material and catalyst through the stirring teeth. The cooperation between the first stirring mechanism and the second stirring mechanism can effectively agitate the material and catalyst, thereby improving the reaction efficiency between the material and the catalyst and preventing the reaction efficiency from decreasing due to poor mixing between the material and the catalyst.

[0016] 2. The present invention, through the provision of a first stirring mechanism and a vibration mechanism, ensures that when the material and catalyst are stirred by the first stirring mechanism, the shaft rotates synchronously with the rotating rod. Since the shaft is Z-shaped, the connecting sleeve rotates around the shaft as the center when the shaft rotates. The top rod, under the action of the shaft and the connecting sleeve, drives the impact head to move up and down reciprocally. When the impact head moves upward, it impacts the inner wall of the inner tank, thereby loosening the material and catalyst through the vibration generated during the impact. This improves the stirring effect of the first stirring mechanism on the material and catalyst, preventing poor stirring effect due to dense contact between the material and catalyst, which would reduce the reaction efficiency between the material and catalyst. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a hydrogenation reactor proposed in this invention;

[0018] Figure 2 This is a cross-sectional structural schematic diagram of a hydrogenation reactor proposed in this invention;

[0019] Figure 3 This is a schematic diagram of the inner tank structure of a hydrogenation reactor proposed in this invention;

[0020] Figure 4 This is a partial structural schematic diagram of a hydrogenation reactor proposed in this invention;

[0021] Figure 5 This is a schematic diagram of the first stirring mechanism of a hydrogenation reactor proposed in this invention;

[0022] Figure 6 for Figure 5 The structural diagram at point A is presented in the text;

[0023] Figure 7 This is a schematic diagram of the second stirring mechanism of a hydrogenation reactor proposed in this invention;

[0024] Figure 8 This is a schematic diagram of the vibration mechanism structure of a hydrogenation reactor proposed in this invention.

[0025] In the attached diagram: 1. Tank body; 2. Support; 3. Support; 4. Product outlet; 5. Material inlet; 6. Conduit; 7. Inner tank; 8. First stirring mechanism; 9. Connecting frame; 10. Catalyst inlet; 11. Slag discharge pipe; 12. Sealing plug; 13. Port; 14. Fixing frame; 15. Second stirring mechanism; 16. Vibration mechanism; 17. Motor; 18. Rotating rod; 19. Stirring blade; 20. Stirring port; 21. Groove; 22. 23. Rack; 24. Support rod; 25. First gear; 26. Rotating shaft; 27. Second gear; 28. Top block; 29. ​​Push plate; 20. First spring; 31. Connecting rod; 32. Push block; 33. Screw; 34. Support column; 35. Second spring; 36. Reset plate; 37. Threaded sleeve; 38. Stirring teeth; 39. Shaft; 40. Connecting sleeve; 41. Top rod; 42. Impact head; 43. Positioning port; 44. Positioning plate. Detailed Implementation

[0026] Example 1, referring to Figures 1-7 A hydrogenation reactor includes a tank 1, with a material inlet 5 on one side and a product outlet 4 on the other side. Supports 2 are bolted to both sides of the outer wall of the tank 1, and supports 3 are bolted to the bottom of each support 2. Connecting frames 9 are bolted to both sides of the inner wall of the tank 1, and an inner tank 7 is bolted between the inner walls of the two connecting frames 9. Openings 13 are provided on both sides of the inner tank 7, and conduits 6 are provided between the openings 13 and the material inlet 5, and between the openings 13 and the product outlet 4. One side of the top of the inner tank 7 and the top of the tank 1 are connected by conduits. The inner tank 7 has through holes, and a catalyst inlet 10 is welded between two through holes. A discharge port is opened through one side of the bottom of the inner tank 7 and the bottom of the tank body 1, and a slag discharge pipe 11 is welded between the two discharge ports. A sealing plug 12 is provided on the inner wall of the slag discharge pipe 11. A first stirring mechanism 8 is provided inside the inner tank 7, and a second stirring mechanism 15 is provided on one side of the first stirring mechanism 8. This can effectively stir the materials and catalyst, thereby improving the reaction efficiency between the materials and catalyst and preventing the reaction efficiency between the materials and catalyst from decreasing due to poor mixing effect.

[0027] Based on the above, the first stirring mechanism 8 includes two fixed frames 14, a rotating rod 18, a motor 17, and multiple stirring blades 19. The two fixed frames 14 are fixed to both sides of the inner wall of the inner tank 7 by bolts. The two fixed frames 14 and the rotating rod 18 are rotatably connected by bearings. One side of one of the fixed frames 14 is connected to the motor 17 by bolts. One end of the motor 17 is fixedly connected to the rotating rod 18. The multiple stirring blades 19 are fixed at equal intervals on the outer circumference of the rotating rod 18.

[0028] Based on the above, stirring ports 20 are provided at both ends of one side of the stirring blade 19, and a groove 21 is provided on one side of the stirring blade 19. The groove 21 is located between the two stirring ports 20, and the second stirring mechanism 15 is located between the two stirring ports 20 and the groove 21.

[0029] Based on the above, the second stirring mechanism 15 includes a transmission assembly, two top blocks 27, a push plate 28, a push block 31, a support column 33, a screw 32, a threaded sleeve 36, multiple stirring teeth 37, and a reset plate 35. The two top blocks 27 have multiple annularly distributed lifting ends on opposite sides. One side of one top block 27 is rotatably connected to the stirring port 20 via a bearing, and one side of the other top block 27 is bolted to the push plate 28. Two ends of one side of the push plate 28 are bolted to the stirring port 20, and two ends of the other side of the push plate 28 are bolted to both sides of the push block 31. There is a connecting rod 30, one end of the support column 33 is bolted to one side of the stirring port 20, the other end of the support column 33 is welded to one end of the screw 32, the push block 31 is slidably connected to the outer wall of the screw 32, the threaded sleeve 36 is threadedly connected to the outer wall of the screw 32, multiple stirring teeth 37 are fixed at equal intervals on the circumferential outer wall of the threaded sleeve 36, one side of the threaded sleeve 36 contacts the push block 31, the other side of the threaded sleeve 36 contacts the reset plate 35, the reset plate 35 is slidably connected to the screw 32, and the two ends of one side of the reset plate 35 are bolted to the stirring port 20 with a second spring 34, and the transmission component is located inside the slot 21.

[0030] Based on the above, the transmission assembly consists of a rack 22, a support rod 23, a first gear 24, a rotating shaft 25, and a second gear 26. The outer wall of the rack 22 is bolted to the inner tank 7. The rack 22 is arc-shaped. The two ends of the support rod 23 are rotatably connected to the two sides of the slot 21 through bearings. The first gear 24 is fixedly sleeved on the outer wall of the support rod 23 and meshes with the rack 22. The two ends of the rotating shaft 25 are rotatably connected to the two sides of the slot 21 through bearings. The second gear 26 is fixedly sleeved on the outer wall of the rotating shaft 25 and meshes with the first gear 24. One end of the rotating shaft 25 is welded to the top block 27.

[0031] Example 2, refer to Figures 1-8 A hydrogenation reactor, compared with Example 1, has a vibration mechanism 16 provided on one side of the rotating rod 18, and the vibration mechanism 16 and the first stirring mechanism 8 are coordinated.

[0032] Based on the above, the vibration mechanism 16 includes a shaft 38, a connecting sleeve 39, a top rod 40, and an impact head 41. One end of the shaft 38 is welded to the rotating rod 18. The shaft 38 is Z-shaped. The connecting sleeve 39 is rotatably sleeved on the outer wall of the shaft 38. The two ends of the top rod 40 are respectively connected to the impact head 41 and the connecting sleeve 39 by hinges. A positioning port 42 is provided through one side of the top rod 40, and a positioning plate 43 is slidably connected to the inner wall of the positioning port 42. The two ends of the positioning plate 43 are welded to the inner tank 7. The vibration generated during the impact can loosen the material and the catalyst, so as to improve the stirring effect of the first stirring mechanism 8 on the material and the catalyst, and prevent the poor stirring effect of the material and the catalyst due to the dense contact between the material and the catalyst, thereby reducing the reaction efficiency between the material and the catalyst.

[0033] In summary, with the aid of the above-mentioned technical solution of the present invention: during the hydrogenation reaction, the material is transported to the inside of the inner tank 7 through the material inlet 5, and the catalyst is transported to the inside of the inner tank 7 through the catalyst inlet 10. After the transport is completed, the first stirring mechanism 8 is activated. The first stirring mechanism 8 will stir the material and the catalyst, thereby improving the reaction efficiency between the material and the catalyst. During this process, the first gear 24 will rotate synchronously with the rotation of the stirring blade 19. When the first gear 24 rotates, it will mesh with the rack 22. The first gear 24 will rotate under the meshing action of the rack 22, and the first gear 24 will rotate. 4. While rotating, the second gear 26 is driven to rotate through meshing. At this time, the second gear 26 rotates synchronously with the rotating shaft 25. The rotating shaft 25 rotates, which in turn drives one of the top blocks 27 to rotate. Through the cooperation between the two top blocks 27, one top block 27 rotates while the other top block 27 moves to one side. The movement of the other top block 27 pushes the push plate 28 to move. At this time, the push block 31 slides on the outer wall of the screw 32 under the action of the push plate 28. When the push block 31 slides, it applies pressure to the threaded sleeve 36. At this time, the threaded sleeve 36 will... Under pressure and the action of the screw 32, the material and catalyst are further stirred by the stirring teeth 37. The cooperation between the first stirring mechanism 8 and the second stirring mechanism 15 can effectively stir the material and catalyst, thereby improving the reaction efficiency between the material and the catalyst and preventing the reaction efficiency from decreasing due to poor mixing between the material and the catalyst. When the material and catalyst are stirred by the first stirring mechanism 8, the shaft 38 will rotate synchronously with the rotation of the rotating rod 18. Since the shaft 38 is Z-shaped, the shaft 3... 8. When rotating, the connecting sleeve 39 will rotate around the shaft 38, and the top rod 40 will drive the impact head 41 to move up and down reciprocally under the action of the shaft 38 and the connecting sleeve 39. When the impact head 41 moves upward, it will impact the inner wall of the inner tank 7. The vibration generated during the impact can loosen the material and the catalyst, so as to improve the stirring effect of the first stirring mechanism 8 on the material and the catalyst. This prevents the material and the catalyst from being in close contact, which would result in poor stirring effect and reduce the reaction efficiency between the material and the catalyst.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A hydrogenation reactor, comprising a tank (1), wherein a material inlet (5) is provided on one side of the tank (1), and a product outlet (4) is provided on the other side of the tank (1), wherein both sides of the outer wall of the tank (1) are bolted to supports (2), and the bottom of each of the two supports (2) is bolted to a base (3), characterized in that, Both sides of the inner wall of the tank (1) are bolted to connecting brackets (9), and the inner walls of the two connecting brackets (9) are bolted to an inner tank (7). Both sides of the inner tank (7) are provided with openings (13), and conduits (6) are provided between the openings (13) and the material inlet (5) and between the openings (13) and the product outlet (4). One side of the top of the inner tank (7) and the top of the tank (1) are provided with through holes, and a catalyst inlet (10) is welded between the two through holes. One side of the bottom of the inner tank (7) and the bottom of the tank (1) are provided with discharge ports, and a slag discharge pipe (11) is welded between the two discharge ports. A sealing plug (12) is provided on the inner wall of the slag discharge pipe (11). The inner tank ( 7) is equipped with a first stirring mechanism (8) and a second stirring mechanism (15) is provided on one side of the first stirring mechanism (8). The first stirring mechanism (8) includes two fixed frames (14), a rotating rod (18), a motor (17) and multiple stirring blades (19). The two fixed frames (14) are fixed to both sides of the inner wall of the inner tank (7) by bolts. The two fixed frames (14) and the rotating rod (18) are rotatably connected by bearings. One side of one of the fixed frames (14) is connected to the motor (17) by bolts. One end of the motor (17) is fixedly connected to the rotating rod (18). Multiple stirring blades (19) are fixed at equal distances on the outer circumference of the rotating rod (18). Both ends of one side of the stirring blades (19) are through-cut. There is a stirring port (20), and a groove (21) is opened on one side of the stirring blade (19). The groove (21) is located between the two stirring ports (20). The second stirring mechanism (15) is located between the two stirring ports (20) and the groove (21). The second stirring mechanism (15) includes a transmission assembly, two top blocks (27), a push plate (28), a push block (31), a support column (33), a screw (32), a threaded sleeve (36), multiple stirring teeth (37), and a reset plate (35). The two top blocks (27) are provided with multiple annularly distributed lifting ends on their respective sides. One side of one top block (27) is rotatably connected to the stirring port (20) through a bearing, and one side of the other top block (27) is connected to the push plate (28) through a bearing. The push plate (28) is bolted to the stirring port (20) at both ends on one side, and a first spring (29) is bolted to the stirring port (20). The push plate (28) is bolted to the two ends on the other side, and a connecting rod (30) is bolted to the two sides of the push block (31). One end of the support column (33) is bolted to one side of the stirring port (20), and the other end of the support column (33) is welded to one end of the screw (32). The push block (31) is slidably connected to the outer wall of the screw (32). The threaded sleeve (36) is threadedly connected to the outer wall of the screw (32). Multiple stirring teeth (37) are fixed at equal intervals on the circumferential outer wall of the threaded sleeve (36). One side of the threaded sleeve (36) contacts the push block (31), and the other side of the threaded sleeve (36) contacts the reset plate (35).The reset plate (35) is slidably connected to the screw (32). The two ends of one side of the reset plate (35) are connected to the stirring port (20) by bolts with a second spring (34). The transmission assembly is located inside the slot (21). The transmission assembly consists of a rack (22), a support rod (23), a first gear (24), a rotating shaft (25), and a second gear (26). The outer wall of the rack (22) is connected to the inner tank (7) by bolts. The rack (22) is arc-shaped. The support rod (23) The two ends of the shaft (25) are rotatably connected to the two sides of the slot (21) via bearings. The first gear (24) is fixedly sleeved on the outer wall of the support rod (23) and meshes with the rack (22). The two ends of the shaft (25) are rotatably connected to the two sides of the slot (21) via bearings. The second gear (26) is fixedly sleeved on the outer wall of the shaft (25) and meshes with the first gear (24). One end of the shaft (25) is welded to the top block (27).

2. A hydrogenation reactor according to claim 1, characterized in that, A vibration mechanism (16) is provided on one side of the rotating rod (18), and the vibration mechanism (16) and the first stirring mechanism (8) are in cooperation.

3. A hydrogenation reactor according to claim 2, characterized in that, The vibration mechanism (16) includes a shaft (38), a connecting sleeve (39), a top rod (40), and an impact head (41). One end of the shaft (38) is welded to the rotating rod (18). The shaft (38) is Z-shaped. The connecting sleeve (39) is rotatably sleeved on the outer wall of the shaft (38). The two ends of the top rod (40) are connected to the impact head (41) and the connecting sleeve (39) respectively by hinges.

4. A hydrogenation reactor according to claim 3, characterized in that, The top rod (40) has a positioning port (42) through one side, and a positioning plate (43) is slidably connected to the inner wall of the positioning port (42). The two ends of the positioning plate (43) are welded to the inner tank (7).

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