A jet flow hydrogenation reactor

Abstract

The present invention belongs to the technical field of hydrogenation reactors and is used to solve the problem of difficulty in feeding hydrogen into the middle and upper part of a liquid in sections, thereby accelerating the production efficiency of isopropyl aniline. Specifically, the present invention is a jet flow hydrogenation reactor, comprising a shell, a reduction motor fixedly mounted on the top of the shell, an output end of the reduction motor fixedly connected to a rotating shaft, the bottom end of the rotating shaft extending into the interior of the shell and rotatably connected to a partition plate via a bearing, the partition plate fixedly connected to the bottom inner wall of the shell. The present invention rotates an arc-shaped hollow plate so that hydrogen is fed into the middle and upper part of the isopropyl nitrobenzene liquid in sections, thereby accelerating the mixing efficiency of hydrogen and liquid, avoiding excessive pressure inside the shell by a buffer mechanism, thereby reducing safety during the reaction, and accelerating the collection of the catalyst by a collection mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogenation reactors, in particular to a jet flow hydrogenation reactor. Background Art

[0002] Isopropylaniline is an important organic synthesis intermediate. Its main use is as an intermediate in the synthesis of the highly effective chemical herbicide isoproturon. It can also be used in the synthesis of pharmaceuticals, dyes, coatings, and other chemical products. With the increasing demand for isopropylaniline in domestic and international markets and the continuous expansion of its applications, the development of isopropylaniline synthesis technology has a very broad market prospect.

[0003] At present, the main method for producing isopropylaniline at home and abroad is the isopropylbenzene nitration reduction method; according to the different reduction methods, it is divided into two types: isopropylbenzene nitration-iron powder reduction method and isopropylbenzene nitration-catalytic hydrogenation reduction method; the iron powder reduction method has been completely eliminated due to environmental protection reasons; the existing isopropylnitrobenzene catalytic hydrogenation reduction processes at home and abroad all require the use of a hydrogenation reactor, and the current hydrogenation reactor has the following disadvantages during use: when hydrogen is added to the interior of the reactor shell, it is difficult to feed hydrogen into the middle and upper part of the liquid in a segmented manner, thereby accelerating the production efficiency of isopropylaniline; at the same time, when hydrogen is added to the interior of the reactor shell, the pressure inside the shell increases, and it is difficult to buffer the increased pressure inside the shell, thereby improving the safety of the hydrogenation reactor during use; and when the catalyst is fed into the interior of the shell and collected after the reaction, it is difficult to quickly complete its collection.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the Invention

[0005] The object of the present invention is to provide a jet flow hydrogenation reactor, which solves the problems of difficulty in feeding hydrogen into the middle and upper part of the liquid in sections, thereby accelerating the production efficiency of isopropylaniline; when hydrogen is added to the interior of the reactor shell, the pressure inside the shell increases, making it difficult to buffer the increased pressure inside the shell, thereby improving the safety of the hydrogenation reactor during use; and when the catalyst is fed into the shell and collected after the reaction, it is difficult to quickly complete its collection.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A jet stream hydrogenation reactor comprises a shell, a reduction motor is fixedly mounted on the top of the shell, a rotating shaft is fixedly connected to the output end of the reduction motor, the bottom end of the rotating shaft extends into the interior of the shell and is rotatably connected to a partition plate via a bearing, the partition plate is fixedly connected to the bottom inner wall of the shell, a plurality of stirring fans are fixedly connected to the outer wall below the rotating shaft, a hydrogen injection pipe is inserted into the side wall of the shell, an adjustment mechanism for changing the gas delivery direction is provided inside the rotating shaft, a buffer mechanism is provided on the side wall above the shell, and a collection mechanism for collecting catalyst is provided below the partition plate;

[0008] The collecting mechanism includes a discharge port opened on the outer wall in the middle of the partition plate, and a third control valve is arranged inside the discharge port, the shell is located on the outer wall below the discharge port and a U-shaped groove is fixedly installed, a limit rod is slidably inserted on the outer wall in the middle of the U-shaped groove, the top of the limit rod extends to the top of the U-shaped groove and is fixedly connected with a protrusion, the protrusion is located directly below the discharge port, the limit rod is provided with a first thrust spring on the outer wall between the protrusion and the U-shaped groove, a U-shaped opening is opened on the outer wall of the U-shaped groove directly below the protrusion, a filter screen is arranged on the outer wall of the U-shaped groove directly below the U-shaped opening, a plurality of top blocks are fixedly installed on the top of the filter screen, and a knocking assembly is provided at the bottom of the partition plate.

[0009] Furthermore, the knocking assembly includes a connecting rod rotatably connected to the two side walls of the bottom of the partition plate through a pin, the bottom end of the connecting rod is fixedly connected to a buoyancy plate, and the buoyancy plate and the partition plate are connected by a traction rope.

[0010] Furthermore, the buoyancy plate is symmetrically arranged relative to the discharge port, and the protrusions on the buoyancy plate match the bottom side wall of the partition plate.

[0011] Furthermore, the adjustment mechanism includes a connecting hollow plate fixedly connected to the middle part of the rotating shaft, and the connecting hollow plate is fixedly connected to an arc-shaped hollow plate at one end away from the rotating shaft, and the arc-shaped hollow plate contacts the inner wall of the shell, and an air delivery port is provided on the outer wall of the arc-shaped hollow plate on the side close to the shell, and a delivery cavity is provided inside the rotating shaft below the connecting hollow plate, and a delivery port is provided inside the rotating shaft below the delivery cavity, and a blocking block is slidably connected to the inside of the delivery port, and exhaust ports are provided on the outer walls of the rotating shaft on both sides of the blocking block, and the blocking block is slidably connected to a limiting column, and the bottom end of the limiting column is fixedly connected to the delivery port, and a second thrust spring is sleeved on the outer wall of the limiting column below the blocking block.

[0012] Furthermore, the interior of the arc-shaped hollow plate, the interior of the connecting hollow plate, the delivery cavity and the delivery port are connected, and the arc-shaped hollow plate and the hydrogen injection pipe are on the same horizontal line.

[0013] Furthermore, the buffer mechanism includes a buffer cavity formed on a side wall of the shell, a buffer tube formed on an outer wall of the shell above the buffer cavity, a rubber plug slidably disposed within the buffer cavity, a third thrust spring elastically disposed between the bottom of the buffer cavity and the rubber plug, and a connecting tube formed on an outer wall of the shell above the buffer tube.

[0014] A first sealing plate is rotatably connected to the lower portion of the inner wall of the buffer tube via a latch. First vertical rods are provided on both sides of the first sealing plate. One first vertical rod is close to the buffer tube and a fourth thrust spring is elastically provided between the first vertical rod and the first sealing plate. The other first vertical rod is away from the buffer tube and in contact with the first sealing plate.

[0015] A second sealing plate is rotatably connected to the upper inner wall of the connecting tube through a latch, and second vertical rods are provided on both sides of the second sealing plate. One second vertical rod is close to the buffer tube and in contact with the second sealing plate, and the other second vertical rod is away from the buffer tube and a fifth thrust spring is elastically provided between the second sealing plate.

[0016] Furthermore, the connecting pipe, the buffer pipe, the buffer cavity and the interior of the shell are connected.

[0017] Furthermore, a feeding pipe is fixedly inserted on the top side wall of the shell, a first control valve is provided inside the feeding pipe, a heater is fixedly installed on the inner side wall above the shell, and a discharge pipe is opened at the bottom end of the shell.

[0018] Furthermore, a method for using a jet stream hydrogenation reactor comprises the following steps:

[0019] Step 1: First, isopropyl nitrobenzene and the catalyst are placed into the shell separately. Then, the hydrogen delivered by methanol cracking is injected into the shell through the hydrogen injection pipe. At this time, the reduction motor rotates the shaft to make the stirring fan mix it. The heater is turned on in advance.

[0020] At the same time, when injecting hydrogen, the rotating shaft drives the arc-shaped hollow plate to rotate through the connecting hollow plate. Since the arc-shaped hollow plate has a gas delivery port on the side close to the inner wall of the shell, when the gas delivery port on the arc-shaped hollow plate contacts the output end of the hydrogen injection pipe, hydrogen enters the interior of the delivery chamber through the gas delivery port and the connecting hollow plate. As the rotating shaft continues to rotate, the hydrogen content in the delivery chamber gradually increases. The hydrogen in the delivery chamber pushes the blocking block downward, causing the gas in the delivery chamber to be discharged through the two exhaust ports, allowing some hydrogen to intermittently react with the middle part of the isopropyl nitrobenzene liquid, thereby accelerating the mixing efficiency of hydrogen and liquid.

[0021] In step 2, during the process of adding hydrogen, the pressure inside the shell is likely to become unstable. When the pressure inside the shell increases, the hydrogen pushes the first and second sealing plates, allowing the hydrogen to enter the buffer tube and the buffer cavity. The third thrust spring is pushed downward through the rubber plug to buffer the pressure inside the shell and prevent the pressure inside the shell from being too high. When the hydrogen inside the shell reacts with the liquid, the second thrust spring pushes the rubber plug upward, causing the hydrogen inside the buffer cavity and the buffer tube to push the first and second sealing plates outward and be discharged into the shell again through the second sealing plate.

[0022] Step three, after obtaining propylaniline, open the third control valve above the discharge port and the first control valve above the feed pipe, so that the liquid and catalyst above the shell are discharged through the discharge port and impact the protrusion, so that the protrusion pushes the first thrust spring downward until the protrusion contacts the top block above the U-shaped opening, and the liquid is continuously poured into the interior of the U-shaped groove, and the catalyst is collected by the filter screen through the U-shaped opening due to the influence of gravity. Since the U-shaped groove is U-shaped, the liquid splashes outward along the inner wall of the U-shaped groove, and the splashed liquid continuously impacts the buoyancy plate, so that the buoyancy plate continuously hits the partition plate, thereby accelerating the collection of the catalyst precipitated above the partition plate;

[0023] When the interior of the shell contains only liquid attached to its inner wall, the liquid flows along the inner wall of the shell to the lower feed port. At this time, the first thrust spring pushes the protrusion upward, causing the protrusion to reset, and the remaining liquid impacts the top of the protrusion, causing the liquid to splash outward along the outer wall of the protrusion, collecting the residual fixed catalyst on the inner wall of the U-shaped groove.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. In the present invention, the arc-shaped hollow plate is rotated by the rotating shaft, and hydrogen enters the interior of the conveying cavity through the gas delivery port on the arc-shaped hollow plate and the connecting hollow plate. As the rotating shaft continues to rotate, the hydrogen content inside the conveying cavity gradually increases, and the hydrogen inside the conveying cavity pushes the blocking block downward, so that the gas inside the conveying cavity is discharged through the two exhaust ports, allowing the hydrogen to be added to the middle and upper part of the isopropyl nitrobenzene liquid in sections, thereby accelerating the mixing efficiency of hydrogen and liquid;

[0026] 2. In the present invention, when the pressure inside the housing increases, hydrogen pushes the first and second sealing plates, allowing the hydrogen to enter the buffer tube and the buffer cavity. The hydrogen pushes the third thrust spring downward through the rubber plug, buffering the pressure inside the housing. When the hydrogen inside the housing reacts with the liquid, the second thrust spring pushes the rubber plug upward, causing the hydrogen inside the buffer cavity and the buffer tube to push the first and second sealing plates outward and be discharged back into the housing through the second sealing plate. This prevents excessive pressure inside the housing, which could reduce safety during the reaction.

[0027] 3. In the present invention, the liquid and catalyst above the shell are discharged through the discharge port and impact the protrusion, so that the protrusion contacts the top block above the U-shaped opening. The liquid is continuously poured into the interior of the U-shaped groove, and the catalyst is collected by the filter screen through the U-shaped opening due to gravity. Since the U-shaped groove is U-shaped, the liquid splashes outward along the inner wall of the U-shaped groove, and the splashed liquid continuously impacts the buoyancy plate, accelerating the collection of the catalyst deposited above the partition plate.

[0028] 4. In the present invention, when the interior of the shell contains only liquid attached to its inner wall, the liquid flows along the inner wall of the shell toward the lower feed port. At this time, the first thrust spring pushes the protrusion upward, causing the protrusion to reset, and the remaining liquid impacts the top of the protrusion, causing the liquid to splash outward along the outer wall of the protrusion, collecting the residual fixed catalyst on the inner wall of the U-shaped groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings;

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 for Figure 1 Schematic diagram of the structure enlargement of region B;

[0032] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of the C region;

[0033] Figure 4 It is a front view of the adjustment mechanism of the present invention;

[0034] Figure 5 for Figure 4 Schematic diagram of the structure enlargement of region A;

[0035] Figure 6 for Figure 1 Schematic diagram of the structure enlargement of the D region;

[0036] Figure 7 It is a front view of the buffer mechanism of the present invention;

[0037] Figure 8 It is a three-dimensional diagram of the arc-shaped hollow plate in the present invention.

[0038] 1. Gearbox; 2. Rotating shaft; 3. Hydrogen injection pipe; 4. Adjusting mechanism; 5. Shell; 6. Collecting mechanism; 7. Feeding pipe; 8. Heater; 9. Buffer mechanism; 10. Stirring fan; 11. Partition plate; 12. Discharge pipe; 41. Gas outlet; 42. Arc hollow plate; 43. Connecting hollow plate; 44. Conveying chamber; 45. Conveying port; 46. Exhaust port; 47. Block; 48. Limiting column; 61. Discharge port; 62. Connecting rod; 63. Buoyancy plate; 64. U-shaped groove; 65. Towing rope; 66. Protrusion; 67. Limiting rod; 68. Filter; 69. U-shaped mouth; 610. Top block; 91. Buffer tube; 92. Buffer chamber; 93. Rubber plug; 94. Connecting pipe; 95. First vertical rod; 96. First sealing plate; 97. Second vertical rod; 98. Second sealing plate. Implementation Method

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0040] like Figure 1-8 As shown, a jet stream hydrogenation reactor proposed in this embodiment includes a shell 5, a reduction motor 1 is fixedly installed on the top of the shell 5, the output end of the reduction motor 1 is fixedly connected to a rotating shaft 2, the bottom end of the rotating shaft 2 extends to the interior of the shell 5 and is rotatably connected to a partition plate 11 through a bearing, the partition plate 11 is fixedly connected to the bottom inner wall of the shell 5, a plurality of stirring fans 10 are fixedly connected to the outer wall below the rotating shaft 2, a hydrogen injection pipe 3 is inserted into the side wall of the shell 5, an adjustment mechanism 4 for changing the gas delivery direction is provided inside the rotating shaft 2, a buffer mechanism 9 is provided on the side wall above the shell 5, and a collecting mechanism 6 for collecting the catalyst is provided below the partition plate 11;

[0041] The collecting mechanism 6 includes a discharge port 61 provided on the outer wall in the middle of the partition plate 11, and a third control valve is provided inside the discharge port 61, a U-shaped groove 64 is fixedly installed on the outer wall of the shell 5 below the discharge port 61, and a limiting rod 67 is slidably inserted on the outer wall in the middle of the U-shaped groove 64, and the top of the limiting rod 67 extends to the top of the U-shaped groove 64 and is fixedly connected with a protrusion 66, which is located directly below the discharge port 61, and the limiting rod 67 is provided with a first thrust spring on the outer wall between the protrusion 66 and the U-shaped groove 64, and a U-shaped opening 69 is provided on the outer wall of the U-shaped groove 64 directly below the protrusion 66, and a filter screen 68 is provided on the outer wall of the U-shaped groove 64 directly below the U-shaped opening 69, and a plurality of top blocks 610 are fixedly installed on the top of the filter screen 68. A knocking assembly is provided at the bottom of the partition 11. When propylaniline is obtained, the third control valve above the discharge port 61 and the first control valve above the feeding pipe 7 are opened, so that the liquid and catalyst above the shell 5 are discharged through the discharge port 61 and impact the protrusion 66, so that the protrusion 66 pushes the first thrust spring downward until the protrusion 66 contacts the top block 610 above the U-shaped mouth 69. The liquid is continuously poured into the interior of the U-shaped groove 64, and the catalyst is collected by the filter screen 68 through the U-shaped mouth 69 due to gravity. Since the U-shaped groove 64 is U-shaped, the liquid splashes outward along the inner wall of the U-shaped groove 64, and the splashed liquid continuously impacts the buoyancy plate 63, so that the buoyancy plate 63 continuously hits the partition plate 11, thereby accelerating the collection of the catalyst precipitated above the partition plate 11.

[0042] The knocking assembly includes a connecting rod 62 rotatably connected to the two side walls of the bottom of the partition plate 11 through a pin. The bottom end of the connecting rod 62 is fixedly connected to a buoyancy plate 63, and the buoyancy plate 63 is connected to the partition plate 11 through a traction rope 65.

[0043] The buoyancy plate 63 is symmetrically arranged relative to the discharge port 61 , and the protrusions on the buoyancy plate 63 match with the bottom side wall of the partition plate 11 .

[0044] The adjustment mechanism 4 includes a connecting hollow plate 43 fixedly connected to the middle part of the rotating shaft 2, and an arc-shaped hollow plate 42 is fixedly connected to the end of the connecting hollow plate 43 away from the rotating shaft 2. The arc-shaped hollow plate 42 contacts the inner wall of the shell 5, and a gas delivery port 41 is provided on the outer wall of the arc-shaped hollow plate 42 on the side close to the shell 5. The rotating shaft 2 is located below the connecting hollow plate 43 and has a delivery cavity 44. The rotating shaft 2 is located below the delivery cavity 44 and has a delivery port 45. The delivery port 45 is slidably connected to a blocking block 47. The outer walls of the rotating shaft 2 on both sides of the blocking block 47 are provided with exhaust ports 46. The blocking block 47 is internally slidably connected to a limiting column 48. The bottom end of the limiting column 48 is fixedly connected to the delivery port 45. The limiting column 48 is located outside the blocking block 47. A second thrust spring is sleeved on the wall. When hydrogen is injected, the rotating shaft 2 drives the arc-shaped hollow plate 42 to rotate by connecting the hollow plate 43. Since the side of the arc-shaped hollow plate 42 close to the inner wall of the shell 5 is provided with a gas delivery port 41, when the gas delivery port 41 on the arc-shaped hollow plate 42 contacts the output end of the hydrogen injection pipe 3, hydrogen enters the interior of the delivery chamber 44 through the gas delivery port 41 and the connecting hollow plate 43. As the rotating shaft 2 continues to rotate, the hydrogen content in the delivery chamber 44 gradually increases. The hydrogen in the delivery chamber 44 pushes the blocking block 47 downward, so that the gas in the delivery chamber 44 is discharged through the two exhaust ports 46, allowing part of the hydrogen to intermittently react with the middle position of the isopropyl nitrobenzene liquid, thereby accelerating the mixing efficiency of the hydrogen and liquid.

[0045] The interior of the arc-shaped hollow plate 42 , the interior of the connecting hollow plate 43 , the delivery cavity 44 and the delivery port 45 are connected, and the arc-shaped hollow plate 42 and the hydrogen injection pipe 3 are on the same horizontal line. Example 2

[0046] like Figure 1 、 6 As shown in Figure 7, a jet stream hydrogenation reactor proposed in this embodiment is improved on the basis of Example 1. The buffer mechanism 9 includes a buffer cavity 92 formed on the side wall of the shell 5. A buffer tube 91 is formed on the outer wall of the shell 5 above the buffer cavity 92. A rubber plug 93 is slidably provided inside the buffer cavity 92. A third thrust spring is elastically provided between the bottom of the buffer cavity 92 and the rubber plug 93. A connecting tube 94 is formed on the outer wall of the shell 5 above the buffer tube 91.

[0047] A first sealing plate 96 is rotatably connected to the lower inner wall of the buffer tube 91 via a latch. First vertical rods 95 are provided on both sides of the first sealing plate 96. One first vertical rod 95 is close to the buffer tube 91 and a fourth thrust spring is elastically provided between the first vertical rod 95 and the first sealing plate 96. The other first vertical rod 95 is away from the buffer tube 91 and in contact with the first sealing plate 96.

[0048] The upper part of the inner wall of the connecting pipe 94 is connected to the second sealing plate 98 by a latch, and a second vertical rod 97 is provided on both sides of the second sealing plate 98. One second vertical rod 97 is close to the buffer tube 91 and in contact with the second sealing plate 98, and the other second vertical rod 97 is away from the buffer tube 91 and a fifth thrust spring is elastically provided between the second sealing plate 98. During the process of adding hydrogen, the pressure inside the shell 5 is likely to be unstable. When the pressure inside the shell 5 increases, the hydrogen pushes the first sealing plate 96 and the second sealing plate 98, so that the hydrogen enters the buffer tube 91. The inside of the flush tube 91 and the buffer chamber 92 is pushed downward by the rubber plug 93 to buffer the pressure inside the shell 5, thereby preventing the internal pressure of the shell 5 from being too high and reducing the safety during the reaction. When the hydrogen inside the shell 5 reacts with the liquid, the second thrust spring pushes the rubber plug 93 upward, so that the hydrogen inside the buffer chamber 92 and the buffer tube 91 pushes the first sealing plate 96 and the second sealing plate 98 outward, and is discharged into the interior of the shell 5 again through the second sealing plate 98, thereby improving the safety of the liquid and gas inside the shell 5 during the reaction.

[0049] The connecting pipe 94 , the buffer pipe 91 , the buffer cavity 92 and the interior of the shell 5 are communicated with each other.

[0050] A feeding pipe 7 is fixedly inserted on the top side wall of the shell 5 , and a first control valve is provided inside the feeding pipe 7 . A heater 8 is fixedly installed on the inner side wall above the shell 5 , and a discharge pipe 12 is provided at the bottom end of the shell 5 . Example 3

[0051] like Figure 1-8 As shown, a method for using a jet stream hydrogenation reactor of this embodiment includes the following steps:

[0052] Step 1: First, isopropyl nitrobenzene and a catalyst are respectively introduced into the interior of the housing 5, and then hydrogen transported by methanol cracking is injected into the interior of the housing 5 through the hydrogen injection pipe 3. At this time, the reduction motor 1 causes the stirring fan 10 to mix it through the rotating shaft 2, and the heater 8 is turned on in advance; the catalyst is Pd / C, Pd-Al2O3, Pd-molecular sieve; Pt / C, Pt-Al2O3, Pt-molecular sieve; Rh / C, Rh-Al2O3, Rh-molecular sieve or Ru / C, Ru-Al2O3, Ru-molecular sieve; the volume ratio of isopropyl nitrobenzene to hydrogen is 1:10-20; the amount of the catalyst is 0.5-1% of the mass of the isopropyl nitrobenzene;

[0053] At the same time, when injecting hydrogen, the rotating shaft 2 drives the arc-shaped hollow plate 42 to rotate through the connecting hollow plate 43. Since the arc-shaped hollow plate 42 has a gas delivery port 41 on the side close to the inner wall of the shell 5, when the gas delivery port 41 on the arc-shaped hollow plate 42 contacts the output end of the hydrogen injection pipe 3, hydrogen enters the interior of the delivery chamber 44 through the gas delivery port 41 and the connecting hollow plate 43. As the rotating shaft 2 continues to rotate, the hydrogen content in the delivery chamber 44 gradually increases. The hydrogen in the delivery chamber 44 pushes the blocking block 47 downward, causing the gas in the delivery chamber 44 to be discharged through the two exhaust ports 46, allowing part of the hydrogen to intermittently react with the middle position of the isopropyl nitrobenzene liquid, thereby accelerating the mixing efficiency of the hydrogen and liquid.

[0054] In step 2, during the process of adding hydrogen, the pressure inside the shell 5 is likely to become unstable. When the pressure inside the shell 5 increases, the hydrogen pushes the first sealing plate 96 and the second sealing plate 98, allowing the hydrogen to enter the buffer tube 91 and the buffer cavity 92, and pushes the third thrust spring downward through the rubber plug 93 to buffer the pressure inside the shell 5, thereby preventing the pressure inside the shell 5 from being too high and reducing safety during the reaction. After the hydrogen inside the shell 5 reacts with the liquid, the second thrust spring pushes the rubber plug 93 upward, causing the hydrogen inside the buffer cavity 92 and the buffer tube 91 to push the first sealing plate 96 and the second sealing plate 98 outward, and then be discharged into the interior of the shell 5 again through the second sealing plate 98, thereby improving the safety of the liquid and gas inside the shell 5 during the reaction;

[0055] Step three, after obtaining propylaniline, open the third control valve above the discharge port 61 and the first control valve above the feed pipe 7, so that the liquid and catalyst above the shell 5 are discharged through the discharge port 61 and impact the protrusion 66, so that the protrusion 66 pushes the first thrust spring downward until the protrusion 66 contacts the top block 610 above the U-shaped opening 69, and the liquid is continuously poured into the interior of the U-shaped groove 64, and the catalyst is collected by the filter screen 68 through the U-shaped opening 69 due to the influence of gravity. Since the U-shaped groove 64 is U-shaped, the liquid splashes outward along the inner wall of the U-shaped groove 64, and the splashed liquid continuously impacts the buoyancy plate 63, so that the buoyancy plate 63 continuously hits the partition plate 11, thereby accelerating the collection of the catalyst precipitated above the partition plate 11;

[0056] When the interior of the shell 5 only contains liquid attached to its inner wall, the liquid flows along the inner wall of the shell 5 toward the lower feed port 61. At this time, the first thrust spring pushes the protrusion 66 upward, so that the protrusion 66 is reset, and the remaining liquid impacts the top of the protrusion 66, causing the liquid to splash outward along the outer wall of the protrusion 66, collecting the residual fixed catalyst on the inner wall of the U-shaped groove 64.

[0057] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A jet flow hydrogenation reactor, comprising a shell (5), a reduction motor (1) fixedly mounted on the top of the shell (5), an output end of the reduction motor (1) fixedly connected to a rotating shaft (2), a bottom end of the rotating shaft (2) extending into the interior of the shell (5) and rotatably connected to a partition plate (11) via a bearing, the partition plate (11) being fixedly connected to the bottom inner wall of the shell (5), a plurality of stirring fans (10) being fixedly connected to the outer wall below the rotating shaft (2), a hydrogen injection pipe (3) being inserted into the side wall of the shell (5), characterized in that: An adjustment mechanism (4) for changing the gas delivery direction is provided inside the rotating shaft (2), a buffer mechanism (9) is provided on the side wall above the shell (5), and a collection mechanism (6) for collecting catalyst is provided below the partition plate (11); The collecting mechanism (6) includes a discharge port (61) provided on the outer wall of the middle portion of the partition plate (11), and a third control valve is provided inside the discharge port (61). A U-shaped groove (64) is fixedly installed on the outer wall of the housing (5) below the discharge port (61), and a limiting rod (67) is slidably inserted on the outer wall of the middle portion of the U-shaped groove (64). The top of the limiting rod (67) extends to the upper portion of the U-shaped groove (64) and is fixedly connected to a protrusion (66). The protrusion (66) is located at the discharge port. Directly below the opening (61), the limiting rod (67) is located between the protrusion (66) and the U-shaped groove (64) and is sleeved with a first thrust spring on its outer wall, the U-shaped groove (64) is located directly below the protrusion (66) and is provided with a U-shaped opening (69), the U-shaped groove (64) is located directly below the U-shaped opening (69) and is provided with a filter screen (68) on its outer wall, a plurality of top blocks (610) are fixedly mounted on the top of the filter screen (68), and a knocking assembly is provided at the bottom of the partition plate (11); The adjustment mechanism (4) includes a connecting hollow plate (43) fixedly connected to the middle of the rotating shaft (2), an arc-shaped hollow plate (42) is fixedly connected to one end of the connecting hollow plate (43) away from the rotating shaft (2), the arc-shaped hollow plate (42) contacts the inner wall of the shell (5), and a gas delivery port (41) is provided on the outer wall of the arc-shaped hollow plate (42) on the side close to the shell (5). The rotating shaft (2) is provided with a delivery cavity (44) located below the connecting hollow plate (43). ) A delivery port (45) is provided inside the delivery chamber (44) below the delivery chamber (44), a blocking block (47) is slidably connected to the inside of the delivery port (45), exhaust ports (46) are provided on the outer walls of the rotating shaft (2) on both sides of the blocking block (47), a limiting column (48) is slidably connected to the inside of the blocking block (47), the bottom end of the limiting column (48) is fixedly connected to the delivery port (45), and a second thrust spring is sleeved on the outer wall of the limiting column (48) below the blocking block (47); The interior of the arc-shaped hollow plate (42), the interior of the connecting hollow plate (43), the delivery cavity (44) and the delivery port (45) are connected, and the arc-shaped hollow plate (42) and the hydrogen injection pipe (3) are on the same horizontal line.

2. A jet stream hydrogenation reactor according to claim 1, characterized in that, The knocking assembly comprises a connecting rod (62) rotatably connected to the two side walls of the bottom of the partition plate (11) via a latch, the bottom end of the connecting rod (62) is fixedly connected to a buoyancy plate (63), and the buoyancy plate (63) and the partition plate (11) are connected via a traction rope (65).

3. A jet stream hydrogenation reactor according to claim 2, characterized in that, The buoyancy plate (63) is symmetrically arranged relative to the discharge port (61), and the protrusion on the buoyancy plate (63) cooperates with the bottom side wall of the partition plate (11).

4. A jet stream hydrogenation reactor according to claim 1, characterized in that: The buffer mechanism (9) includes a buffer cavity (92) provided on a side wall of the housing (5); a buffer tube (91) is provided on an outer wall of the housing (5) located above the buffer cavity (92); a rubber plug (93) is slidably provided inside the buffer cavity (92); a third thrust spring is elastically provided between the bottom of the buffer cavity (92) and the rubber plug (93); and a connecting tube (94) is provided on an outer wall of the housing (5) located above the buffer tube (91); A first sealing plate (96) is rotatably connected to the lower portion of the inner wall of the buffer tube (91) via a latch, and first vertical rods (95) are provided on both sides of the first sealing plate (96), one first vertical rod (95) is close to the buffer tube (91) and a fourth thrust spring is elastically provided between the first vertical rod (95) and the first sealing plate (96), and the other first vertical rod (95) is away from the buffer tube (91) and in contact with the first sealing plate (96); A second sealing plate (98) is rotatably connected to the upper side of the inner wall of the connecting tube (94) via a latch, and second vertical rods (97) are provided on both sides of the second sealing plate (98), one second vertical rod (97) is close to the buffer tube (91) and in contact with the second sealing plate (98), and the other second vertical rod (97) is away from the buffer tube (91) and a fifth thrust spring is elastically provided between the second vertical rod (97) and the second sealing plate (98).

5. A jet stream hydrogenation reactor according to claim 4, characterized in that: The connecting pipe (94), the buffer pipe (91), the buffer cavity (92) and the interior of the shell (5) are in communication with each other.

6. A jet stream hydrogenation reactor according to claim 1, characterized in that: A feeding pipe (7) is fixedly inserted on the top side wall of the shell (5), a first control valve is provided inside the feeding pipe (7), a heater (8) is fixedly installed on the inner side wall above the shell (5), and a discharge pipe (12) is provided at the bottom end of the shell (5).

7. The method for using a jet stream hydrogenation reactor according to claim 4, characterized in that: The following steps are involved: Step 1: First, isopropyl nitrobenzene and the catalyst are respectively introduced into the interior of the housing (5), and then the hydrogen delivered by methanol cracking is injected into the interior of the housing (5) through the hydrogen injection pipe (3). At this time, the reduction motor (1) causes the stirring fan (10) to mix the hydrogen through the rotating shaft (2), and the heater (8) is turned on in advance; At the same time, when hydrogen is injected, the rotating shaft (2) drives the arc hollow plate (42) to rotate through the connecting hollow plate (43). Since the arc hollow plate (42) is provided with a gas delivery port (41) on one side close to the inner wall of the shell (5), when the gas delivery port (41) on the arc hollow plate (42) contacts the output end of the hydrogen injection pipe (3), hydrogen enters the interior of the delivery chamber (44) through the gas delivery port (41) and the connecting hollow plate (43). As the rotating shaft (2) continues to rotate, the hydrogen content in the delivery chamber (44) gradually increases. The hydrogen in the delivery chamber (44) pushes the blocking block (47) downward, so that the gas in the delivery chamber (44) is discharged through the two exhaust ports (46), allowing part of the hydrogen to intermittently react with the middle position of the isopropyl nitrobenzene liquid, thereby accelerating the mixing efficiency of the hydrogen and the liquid. Step 2: During the process of adding hydrogen, the pressure inside the shell (5) may be easily unstable. When the pressure inside the shell (5) increases, the hydrogen pushes the first sealing plate (96) and the second sealing plate (98), so that the hydrogen enters the buffer tube (91) and the buffer cavity (92), and pushes the third thrust spring downward through the rubber plug (93) to buffer the pressure inside the shell (5) and avoid excessive pressure inside the shell (5). When the hydrogen inside the shell (5) reacts with the liquid, the second thrust spring pushes the rubber plug (93) upward, so that the hydrogen inside the buffer cavity (92) and the buffer tube (91) pushes the first sealing plate (96) and the second sealing plate (98) outward, and is discharged into the interior of the shell (5) again through the second sealing plate (98); Step 3: After obtaining propylaniline, the third control valve above the discharge port (61) and the first control valve above the feed pipe (7) are opened, so that the liquid and catalyst above the shell (5) are discharged through the discharge port (61) and impact the protrusion (66), so that the protrusion (66) pushes the first thrust spring downward until the protrusion (66) contacts the top block (610) above the U-shaped opening (69), and the liquid is continuously poured into the interior of the U-shaped groove (64), and the catalyst is collected by the filter screen (68) through the U-shaped opening (69) due to the influence of gravity. Since the U-shaped groove (64) is U-shaped, the liquid splashes outward along the inner wall of the U-shaped groove (64), and the splashed liquid continuously impacts the buoyancy plate (63), so that the buoyancy plate (63) continuously hits the partition plate (11), thereby accelerating the collection of the catalyst precipitated above the partition plate (11); When the interior of the shell (5) contains only liquid attached to its inner wall, the liquid flows along the inner wall of the shell (5) toward the lower feed port (61). At this time, the first thrust spring pushes the protrusion (66) upward, causing the protrusion (66) to reset, and the remaining liquid impacts the top of the protrusion (66), causing the liquid to splash outward along the outer wall of the protrusion (66), collecting the residual fixed catalyst on the inner wall of the U-shaped groove (64).

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