A high-pressure hydrogenation reactor with a sampling structure

Abstract

This invention belongs to the technical field of hydrogenation reactors, and particularly relates to a high-pressure hydrogenation reactor with a sampling structure. The reactor includes a reactor body with an upward-opening, barrel-shaped structure. The inner wall of the reactor body is equipped with a heating mechanism and a corrosion-resistant layer. A pressure-resistant top cover is sealed and fixed to the top of the reactor body. A stirring mechanism is located at the top of the pressure-resistant top cover, and the stirring mechanism includes a transmission rod extending into the reactor body. This invention allows the sampling plug to be directly pushed into the reactor body a certain distance during the reaction process. After the material fills the collection chamber, it can be pulled out. As long as the sampling plug remains in place at the pipe opening for its entire length, the internal pressure remains constant. Then, the collection chamber of the sampling plug can be pulled out to a point away from the reactor body for sample collection.

Description

Technical Field

[0001] This invention relates to the field of hydrogenation reactor technology, and more particularly to a high-pressure hydrogenation reactor containing a sampling structure. Background Technology

[0002] Hydrogenation technology refers to a process technology in which, under specific temperature and hydrogen pressure conditions, and in a controlled reaction vessel, a suitable catalyst is used to catalyze the reaction of heavy oil, residual oil, and other substances with hydrogen gas. This process improves the quality of the added substance or separates existing substances to obtain new, desired substances. Hydrogenation is a widely used reaction process in chemical and pharmaceutical plants, and it is generally carried out in a reaction vessel.

[0003] In existing technologies, hydrogen is introduced into the reactor from the bottom and forms bubbles through axial flow stirring inside the reactor. A small portion of the bubbles react with the solution on the catalyst surface, while the remaining bubbles rise to the surface of the solution due to buoyancy. The contact area between the bubbles and the solution is small, resulting in low hydrogen utilization. In the subsequent pressure-holding reaction, the reaction rate is low. During the hydrogenation reaction, excess impurities are easily formed, affecting the purity of the product. Furthermore, existing hydrogenation reactors do not have a sampling device for closed reactions. Therefore, we propose a high-pressure hydrogenation reactor with a sampling structure. Summary of the Invention

[0004] To address the technical problem that existing hydrogenation reactors do not incorporate intermediate sampling for closed-loop reactions, this invention employs the following technical solution:

[0005] A high-pressure hydrogenation reactor with a sampling structure includes a reactor body with an upward-opening, barrel-shaped structure. The inner wall of the reactor body is equipped with a heating mechanism and a corrosion-resistant layer. A pressure-resistant top cover is sealed and fixed to the top of the reactor body. A stirring mechanism, including a transmission rod extending into the reactor body, is located at the top of the pressure-resistant top cover. A liquid inlet is located near the circumferential edge of the pressure-resistant top cover. Multiple parallel catalyst feeding pipes are arranged on the sides of the reactor body, and a discharge hole is pre-reserved at the bottom of the reactor body. Reaction auxiliary mechanisms are provided on the inner wall of the reactor body at the outlets of the corresponding catalyst feeding pipes, with each layer of reaction auxiliary mechanisms having an identical structure. Each reaction auxiliary mechanism includes a downward-opening conical barrel frame fixed to the inner wall of the reactor body. An inner fixing ring is fixed to the outer circumference of the conical barrel frame near the lower opening of the catalyst feeding pipe, and an outer fixing ring of the same height as the inner fixing ring is fixed to the inner wall of the reactor body. The reactor consists of an inner and outer fixed ring, with a horizontally distributed mesh fixed between them. Six to twelve hydrogen outlet nozzles are located below the conical surface of the conical barrel frame, below the mesh. A sampling mechanism for horizontal sampling is located at the bottom of the reactor body. This mechanism includes an outer tube inserted through the side of the reactor body. A sampling plug is slidably inserted into the inner end of the outer tube near the reactor body, and the outer wall of the sampling plug has a vertical collection chamber. Using the sampling plug with the collection chamber, the sampling plug can be pushed directly into the reactor body during the reaction process. After the collection chamber is filled, it can be pulled out. As long as the sampling plug remains plugged at the pipe opening for its entire length, the internal gas pressure remains constant. The collection chamber of the sampling plug can then be pulled out to a point away from the reactor body for sample collection. Combined with the hydrogen outlet nozzles located below the mesh, the material during catalyst catalysis can be hydrogenated in a timely manner, improving reaction efficiency.

[0006] A further feature is that the stirring mechanism includes a main motor frame fixed to the top of the reactor body, a vertical drive motor is mounted on the top of the main motor frame, and the top of the transmission rod is fixed to the output shaft end of the drive motor via a coupling; the top of the reactor body has a pre-drilled mounting hole, and sealed bearings and shaft seals adapted to the diameter of the transmission rod are respectively installed on the inner and outer sides of the mounting hole; through the installed shaft seals and sealed bearings, the internal materials and catalyst can be fully mixed while ensuring a seal, thereby improving reaction efficiency and catalyst utilization.

[0007] A further feature is that an observation mirror and a gas phase outlet are respectively provided on the outer circumference of the reactor body near the top, and a monitoring instrument installation pipe is provided on the side of the pressure-resistant top cover of the reactor body away from the liquid inlet, so as to improve the monitoring of the internal environment under the premise of high pressure sealing.

[0008] A further feature is that the bottom of the conical barrel frame has multiple mounting notches, and a connecting rod is fixed in each mounting notch. The end of the connecting rod away from the conical barrel frame is fixed to the inner wall of the reactor body by bolts and screws. A bearing is embedded in the top of each conical barrel frame, and the transmission rod passes vertically through the bearing at the top of each conical barrel frame. A spoke fixing ring is fixed to the outer circumference of the transmission rod at the top of the conical barrel frame, and multiple spoke scrapers are fixed to the outer wall of the spoke fixing ring. The spoke scrapers are all attached to the outer wall of the conical barrel frame. Each spoke... Each scraper bar has a horizontally fixed swing return spring at its bottom end, and the axis of the swing return spring passes through the axis of the transmission rod. A fixing strip is fixed to the end of each swing return spring away from the spoke scraper bar, and an L-shaped shaking shovel is fixed to the bottom end of each fixing strip. All L-shaped shaking shovels are centrally symmetrically distributed, and the lower surface of each L-shaped shaking shovel is in close contact with the upper surface of the uniformly distributed mesh. Through the rotating L-shaped shaking shovels, the incoming catalyst particles can be evenly dispersed on the upper surface of the uniformly distributed mesh in a timely manner, allowing for more uniform contact with the liquid and hydrogen to be treated.

[0009] A further feature is that multiple unequally spaced jumping triangular blocks are fixed to the upper surface of the outer fixing ring, and the end of the L-shaped shaking shovel away from the conical barrel frame rests on the upper surface of the jumping triangular blocks. With the jumping triangular blocks, when all the L-shaped shaking shovels rotate, they can suddenly drop when a certain amount of catalyst is scooped up, thus scattering the catalyst and preventing it from accumulating in one place.

[0010] A further feature is that a hydrogen supply pipe is fixed to the outer wall of the reactor body at the end furthest from the catalyst feed pipe, and a distributor is installed on each hydrogen supply pipe near the bottom of the conical barrel frame. A gas supply pipe is sleeved at the outlet end of each distributor, and the end of the gas supply pipe furthest from the distributor is inserted into the inlet of the hydrogen outlet nozzle. The hydrogen outlet nozzle includes an outer casing tube, with an outlet reserved at the end of the outer casing tube furthest from the inlet. A spring-loaded fixing arm is fixed to the inner circumference of the outer casing tube near the outlet, and a tension spring is fixed to the side of the spring-loaded fixing arm near the outlet. The spring has a cover-shaped anti-reverse diffusion plate fixed to the end of the tension spring away from the spring fixing arm. The anti-reverse diffusion plate has multiple notches on its inner circumference. The air inlet of the outer shell tube is set at the eccentric position. A fan is set inside the outer shell tube near the air inlet. A gas-gathering tube is set inside the outer shell tube directly opposite the air inlet. Through the gas-gathering tube, when hydrogen is sprayed out, it can not only diffuse to a larger area through the notches, but also increase the swing amplitude under the action of the tension spring, thereby achieving a larger range of effect with fewer nozzles.

[0011] A further feature is that, when there is no internal hydrogen gas ejection, the anti-reverse diffusion plate, in conjunction with the tension spring, forms a seal by attaching its surface to the outlet pipe, thereby preventing internal liquid from overflowing into the outer casing pipe through the outlet.

[0012] A further feature is that the catalyst feeding pipe has an overall L-shaped structure with an obtuse angle. One section of the catalyst feeding pipe near the reactor body is horizontal, and the other section is an inclined sliding section. The inner wall of the inclined sliding section is provided with a horizontally arranged inner partition plate near the lowest end. A material passage hole is opened in the middle of the inner partition plate. A spring baffle is fixed at the top of the material passage hole, and a reset spring is fixed on the lower surface of the spring baffle. A one-way downward feeding plate is fixed at the bottom end of the reset spring. The end of the one-way downward feeding plate away from the reset spring is hinged to the lower surface of the inner partition plate. Through the inner partition plate and the one-way downward feeding plate, one-way downward feeding and pressure holding functions can be achieved.

[0013] A further feature is that the end of the outer tube barrel furthest from the opening, i.e., the end furthest from the reactor body, has a shaped mounting hole, and a hydraulic telescopic rod is fixed in the shaped mounting hole. The end of the extension rod of the hydraulic telescopic rod is fixed to the tail end of the sampling plug rod by bolts, and the end of the sampling plug rod near the reactor body has a concave inclined surface, the arc shape of which is adapted to match the ground of the reactor body. Furthermore, the outer wall of the outer tube barrel has two vertical through holes near the end of the hydraulic telescopic rod, and the two through holes are concentric. A guide frame is fixed above the upper through hole on the outer wall of the outer tube barrel, and a sliding hole is opened in the middle of the guide frame. A discharge block is slidably connected in the sliding hole, and a rack pusher is fixed to the top of the discharge block. The diameter of the discharge block is less than or equal to the inner diameter of the collection chamber. With the rack pusher and discharge block, the sample can be squeezed out simply by pressing down on the rack pusher during sampling.

[0014] A further feature is that a U-shaped guide chute is fixed to the bottom of the through-hole on the outer wall of the outer tube, and a sample container is slidably connected inside the guide chute. A rack guide seat is fixed to the top of the guide frame, and a rack push rod is slidably inserted into the rack guide seat. A servo motor is also fixed to the side of the guide frame near the top, and a drive gear that meshes with the rack push rod is fixed to the top of the output shaft of the servo motor. Through the rack push rod and servo motor, the most dangerous step of remote sampling can be achieved. After confirming that the material has been removed, the entire assembly is reset and the sample can be retrieved.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. By using a sampling plug with a collection chamber, the sampling plug can be pushed into the reactor body a certain distance during the reaction process. After the material fills the collection chamber, it can be pulled out. At this time, as long as the sampling plug is blocked at the pipe opening for a whole section, the internal air pressure will remain unchanged. Then, the collection chamber of the sampling plug can be pulled out to a section away from the reactor body to collect the sample.

[0017] 2. The rotating L-shaped shaking shovel can promptly and evenly disperse the incoming catalyst particles on the upper surface of the uniformly distributed mesh, allowing for more even contact and cooperation with the liquid to be treated and hydrogen. In addition, the setting of the cliff-jumping triangular block can intermittently bump the L-shaped shaking shovel as it rotates, and when a certain amount of catalyst is scooped up, it suddenly drops, scattering the catalyst and helping to prevent the catalyst from accumulating in one place.

[0018] 3. By using the gas-gathering tube and the notch at the edge of the anti-reverse diffuser, the hydrogen gas can not only diffuse to a larger area when it is ejected, but also increase the swing amplitude under the action of the tension spring, thereby achieving a larger range of effect with fewer nozzles.

[0019] 4. With the rack pusher and discharge block, the sample can be squeezed out by simply pressing down on the rack pusher during sampling. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a high-pressure hydrogenation reactor with a sampling structure proposed in this invention;

[0021] Figure 2 This is a front view of a high-pressure hydrogenation reactor with a sampling structure proposed in this invention;

[0022] Figure 3 This is a side view of a high-pressure hydrogenation reactor with a sampling structure proposed in this invention;

[0023] Figure 4 This invention proposes a high-pressure hydrogenation reactor with a sampling structure. Figure 2 A sectional view along line AA.

[0024] Figure 5 This is a cross-sectional view of a sampling mechanism in a high-pressure hydrogenation reactor containing a sampling structure, as proposed in this invention.

[0025] Figure 6 This is a three-dimensional structural diagram of a sampling plug rod in a high-pressure hydrogenation reactor containing a sampling structure, as proposed in this invention.

[0026] Figure 7This is a cross-sectional view of the catalyst feed pipe in a high-pressure hydrogenation reactor with a sampling structure proposed in this invention;

[0027] Figure 8 This is a schematic diagram of the stirrer in a high-pressure hydrogenation reactor with a sampling structure proposed in this invention;

[0028] Figure 9 This is a schematic diagram of the bottom structure of a conical barrel frame for a high-pressure hydrogenation reactor with a sampling structure proposed in this invention.

[0029] Figure 10 A cross-sectional view of the hydrogen outlet nozzle in a high-pressure hydrogenation reactor containing a sampling structure, as proposed in this invention.

[0030] In the diagram: 1. Reactor body; 2. Catalyst feed pipe; 201. Spring baffle; 202. Reset spring; 203. Inner partition plate; 204. One-way downward feed plate; 3. Observation mirror; 4. Monitoring instrument mounting pipe; 5. Transmission rod; 6. Drive motor; 7. Shaft seal; 8. Liquid inlet; 9. Pressure-resistant top cover of the reactor body; 10. Gas outlet; 11. Hydrogenation pipe; 12. Servo motor; 13. Discharge hole; 14. Guide chute; 15. Sample container; 16. Hydraulic telescopic rod; 17. Sampling mechanism; 18. Guide frame; 19. Drive gear; 20. Gear guide seat; 21. Main motor frame 22. Sampling plug; 2201. Collection chamber; 2202. Concave inclined plane; 23. Diverting gas supply pipe; 24. Installation notch; 25. Outer fixing ring; 26. Uniformly distributed net; 27. Cliff-jumping triangular block; 28. Conical barrel frame; 29. ​​Sealed bearing; 30. Spoke fixing ring; 31. Spoke scraper; 32. Swinging return spring; 33. L-shaped shaking shovel; 34. Connecting support rod; 35. Rack push rod; 36. Inner fixing ring; 37. Hydrogen outlet nozzle; 371. Spring fixing arm; 372. Gas outlet; 373. Anti-reverse diffuser plate; 374. Notch; 375. Gas gathering pipe; 376. Fan. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Example

[0033] Reference Figure 1-10A high-pressure hydrogenation reactor with a sampling structure includes a reactor body 1 with an upward-opening barrel-shaped structure. The inner wall of the reactor body 1 is provided with a heating mechanism and a corrosion-resistant layer. The top of the reactor body 1 is sealed and fixed with a pressure-resistant top cover 9. The top of the pressure-resistant top cover 9 is provided with a stirring mechanism, which includes a transmission rod 5 extending into the interior of the reactor body. A liquid inlet 8 is provided near the circumferential edge of the pressure-resistant top cover 9.

[0034] The reactor body 1 has multiple parallel catalyst feeding pipes 2 on its side, a discharge hole 13 is reserved at the bottom of the reactor body 1, and a reaction auxiliary mechanism is provided at the discharge port of the corresponding catalyst feeding pipe 2 on the inner wall of the reactor body 1, and the reaction auxiliary mechanism of each layer has the same structure.

[0035] The reaction auxiliary mechanism includes a downward-opening conical barrel frame 28 fixed to the inner wall of the reactor body 1. An inner fixing ring 36 is fixed on the outer circumference of the conical barrel frame 28 near the lower opening of the catalyst feed pipe 2. An outer fixing ring 25 of the same height as the inner fixing ring 36 is fixed on the inner wall of the reactor body 1. A horizontally distributed net 26 is fixed between the inner fixing ring 36 and the outer fixing ring 25. Six to twelve hydrogen outlet nozzles 37 are arranged on the conical surface of the conical barrel frame 28 below the distributed net 26.

[0036] A sampling mechanism 17 capable of horizontal sampling is provided at the bottom of the reactor body 1. The sampling mechanism 17 includes an outer tube inserted through and into the side of the reactor body 1. A sampling plug rod 22 is slidably inserted into the inner end of the outer tube near the reactor body 1, and a vertical collection chamber 2201 is opened on the outer wall of the sampling plug rod 22. By using the sampling plug rod 22 with the collection chamber 2201, the sampling plug rod 22 can be pushed into the reactor body 1 a certain distance during the reaction process. After the material fills the collection chamber 2201, it can be pulled out. At this time, as long as it is ensured that the sampling plug rod 22 is blocked at the pipe opening for the entire length, the internal gas pressure can be kept constant. Then, the collection chamber 2201 of the sampling plug rod 22 can be pulled out to a section away from the reactor body 1 for sample collection. With the hydrogen nozzle 37 set below the uniformly distributed net 26, the material during catalyst catalysis can be hydrogenated in time to improve the reaction efficiency.

[0037] Reference Figure 4The stirring mechanism includes a main motor frame 21 fixed to the top of the reactor body 1. A vertical drive motor 6 is installed on the top of the main motor frame 21, and the top of the transmission rod 5 is fixed to the output shaft end of the drive motor 6 through a coupling. The top of the reactor body 1 has a pre-drilled mounting hole, and a sealed bearing 29 and a shaft seal 7 that are adapted to the diameter of the transmission rod 5 are respectively installed on the inner and outer sides of the mounting hole. Through the shaft seal 7 and the sealed bearing 29, the internal materials and catalyst can be fully mixed while ensuring a seal, thereby improving the reaction efficiency and catalyst utilization rate.

[0038] Please refer to Figure 1-3 The outer circumference of the reactor body 1 is equipped with an observation mirror 3 and a gas phase outlet 10 near the top. The pressure-resistant top cover 9 of the reactor body is equipped with a monitoring instrument installation pipe 4 on the side away from the liquid inlet 8, so as to improve the monitoring of the internal environment under the premise of high pressure sealing.

[0039] Please refer to Figure 4 The bottom of the conical barrel frame 28 has multiple mounting notches 24, and each mounting notch 24 has a connecting rod 34 fixed in it. The end of the connecting rod 34 away from the conical barrel frame 28 is fixed to the inner wall of the reactor body 1 by bolts and screws. Each conical barrel frame 28 has a bearing embedded in its top, and the transmission rod 5 passes vertically through the bearing at the top of each conical barrel frame 28. The outer circumference of the transmission rod 5 is fixed with a spoke fixing ring 30 at the top of the conical barrel frame 28, and multiple spoke scrapers 31 are fixed to the outer wall of the spoke fixing ring 30. The spoke scrapers 31 are all attached to the outer wall of the conical barrel frame 28. Each of the components 1 has a horizontally fixed swing return spring 32 at its bottom, and the axis of the swing return spring 32 passes through the axis of the transmission rod 5. Each swing return spring 32 has a fixed strip at the end away from the spoke scraper 31, and each fixed strip has an L-shaped shaking shovel 33 at its bottom. All the L-shaped shaking shovels 33 are centrally symmetrically distributed, and the lower surface of the L-shaped shaking shovels 33 is in close contact with the upper surface of the uniformly distributed mesh 26. Through the rotating L-shaped shaking shovels 33, the catalyst particles that enter can be evenly dispersed on the upper surface of the uniformly distributed mesh 26 in a timely manner, and more evenly adhered to the liquid to be treated and hydrogen.

[0040] Please refer to Figure 4 and Figure 8 Multiple unequally spaced jumping triangular blocks 27 are fixed on the upper surface of the outer fixed ring 25, and the end of the L-shaped shaking shovel 33 away from the conical barrel frame 28 rests on the upper surface of the jumping triangular blocks 27. With the jumping triangular blocks 27, when all the L-shaped shaking shovels 33 rotate, they can suddenly drop when a certain amount of catalyst is scooped up, thus scattering the catalyst and preventing it from accumulating in one place.

[0041] Please refer to Figure 9-10The outer wall of the reactor body 1 is fixed with a hydrogen supply pipe 11 at the end away from the catalyst feed pipe 2. A distributor is installed on each hydrogen supply pipe 11 near the bottom of the conical barrel frame 28. A distributor gas supply pipe 23 is sleeved at the outlet end of each distributor. The end of the distributor gas supply pipe 23 away from the distributor is inserted into the inlet of the hydrogen outlet nozzle 37. The hydrogen outlet nozzle 37 includes an outer shell tube, with an outlet 372 reserved at the end of the outer shell tube away from the inlet. A spring-loaded fixing arm 371 is fixed on the inner circumference of the outer shell tube near the outlet 372. A tension spring is fixed on the side of the spring-loaded fixing arm 371 near the outlet 372. A cover-shaped anti-reverse diffusion plate 373 is fixed to one end of the extension spring away from the spring fixing arm 371. Multiple notches 374 are opened on the inner edge of the anti-reverse diffusion plate 373, and the air inlet of the outer shell tube is set at the eccentric position. A fan 376 is set inside the outer shell tube near the air inlet, and a gas-gathering pipe 375 is set inside the outer shell tube directly opposite the air inlet. Through the gas-gathering pipe 375, when hydrogen is sprayed out, it can not only diffuse to a larger area through the notches 374, but also increase the swing amplitude under the action of the extension spring, thereby achieving a larger range of effect with fewer nozzles.

[0042] Please refer to Figure 10 When there is no internal hydrogen gas ejection, the anti-reverse diffuser 373, in conjunction with the tension spring, forms a seal by attaching its surface to the opening of the outlet 372, thereby preventing the internal liquid from overflowing into the outer casing tube through the outlet 372.

[0043] Please refer to Figure 2 and Figure 7 The catalyst feeding pipe 2 has an overall L-shaped structure with an obtuse angle. The section of the catalyst feeding pipe 2 near the reactor body 1 is a horizontal section, and the other section is an inclined sliding section. The inner wall of the inclined sliding section is provided with a horizontally arranged inner partition plate 203 near the lowest end. The inner partition plate 203 has a material passage hole in the middle. A spring baffle 201 is fixed at the top of the material passage hole. A reset spring 202 is fixed on the lower surface of the spring baffle 201. A one-way downward feeding plate 204 is fixed at the bottom end of the reset spring 202. The end of the one-way downward feeding plate 204 away from the reset spring 202 is hinged to the lower surface of the inner partition plate 203. Through the inner partition plate 203 and the one-way downward feeding plate 204, one-way downward feeding and pressure holding can be achieved.

[0044] Please refer to Figure 1 and Figure 4-5The outer tube barrel has a shaped mounting hole at the end furthest from the opening, i.e., the end furthest from the reactor body 1. A hydraulic telescopic rod 16 is fixed in the shaped mounting hole. The end of the extension rod of the hydraulic telescopic rod 16 is fixed to the tail end of the sampling plug rod 22 by bolts. The end of the sampling plug rod 22 closest to the reactor body 1 has a concave inclined surface 2202. The arc shape of the concave inclined surface 2202 is adapted to match the ground of the reactor body 1. The outer wall of the outer tube barrel has a... Two vertical through holes are concentric. A guide frame 18 is fixed on the outer wall of the outer tube near the upper through hole. A sliding hole is opened in the middle of the guide frame 18. A discharge block is slidably connected in the sliding hole. A rack push rod 35 is fixed at the top of the discharge block. The diameter of the discharge block is less than or equal to the inner diameter of the collection chamber 2201. With the rack push rod 35 and the discharge block, the sample can be squeezed out by simply pressing down on the rack push rod 35 when sampling.

[0045] Please refer to Figure 1 and Figure 5 The outer wall of the outer tube is fixed with a U-shaped guide chute 14 at the bottom of the through hole, and a sample container 15 is slidably connected in the guide chute 14. The top of the guide frame 18 is fixed with a rack guide seat 20, and the rack push rod 35 is slidably inserted in the rack guide seat 20. The side of the guide frame 18 is also fixed with a servo motor 12 near the top, and the top of the output shaft of the servo motor 12 is fixed with a drive gear 19 that meshes with the rack push rod 35. With the rack push rod 35 and the servo motor 12, the most dangerous step of remote sampling can be achieved. After confirming that the material has been taken out, the whole unit is reset and the sample can be retrieved.

[0046] Principle: When using this reactor, the catalyst is first added through the two catalyst feeding pipes 2. At the same time, the stirring mechanism is started. At this time, the L-shaped shaking shovel 33 in the stirring mechanism first roughly spreads the catalyst. Then, the bottom discharge hole 13 is closed, and the catalyst can be fed from the top liquid inlet 8. At the same time, the hydrogenation pipe 11 is opened to start gas circulation. At this time, through the set gas gathering pipe 375, when the hydrogen is sprayed out, it can not only diffuse to a larger area through the notch 374, but also increase the swing amplitude under the action of the tension spring, thus achieving a larger range of action with fewer nozzles.

[0047] If sampling is required during the reaction, simply control the hydraulic telescopic rod 16 to move the sampling plug rod 22 with the collection chamber 2201 inward until the upper opening of the collection chamber 2201 is completely submerged in the material. Then, pull the sampling plug rod 22 out as a whole. Note that during this process, as long as the sampling plug rod 22 is blocked at the pipe opening for the entire length, the internal air pressure will remain constant. Then, pull the collection chamber 2201 of the sampling plug rod 22 out to a section away from the reactor body 1 to collect the sample. At this time, through the rack push rod 35 and the discharge block, the sample can be squeezed out by pressing down on the rack push rod 35 during sampling.

[0048] 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 high-pressure hydrogenation reactor with a sampling structure, comprising a reactor body (1) in the shape of a barrel with an opening facing upwards, the inner wall of the reactor body (1) is provided with a heating mechanism and a corrosion-resistant layer, and the top end of the reactor body (1) is sealingly fixed with a kettle pressure-resistant top cover (9), the top end of the kettle pressure-resistant top cover (9) is provided with a stirring mechanism, and the stirring mechanism comprises a transmission rod (5) extending into the kettle; the kettle pressure-resistant top cover (9) is provided with a liquid inlet (8) near the circumferential edge; and the side of the reactor body (1) is provided with a plurality of parallel catalyst feeding pipes (2), and the bottom of the reactor body (1) is provided with a discharge hole (13); characterized in that, The inner wall of the reactor body (1) is equipped with a reaction auxiliary mechanism at the outlet of the corresponding catalyst feeding pipe (2), and the reaction auxiliary mechanism of each layer has the same structure. The reaction auxiliary mechanism includes a downward-opening conical barrel frame (28) fixed to the inner wall of the reactor body (1). An inner fixing ring (36) is fixed on the outer circumference of the conical barrel frame (28) near the lower opening of the catalyst feed pipe (2). An outer fixing ring (25) of the same height as the inner fixing ring (36) is fixed on the inner wall of the reactor body (1). A horizontal uniformly distributed net (26) is fixed between the inner fixing ring (36) and the outer fixing ring (25). Six to twelve hydrogen outlet nozzles (37) are set on the conical surface of the conical barrel frame (28) below the uniformly distributed net (26). The bottom of the reactor body (1) is provided with a sampling mechanism (17) capable of horizontal sampling, and the sampling mechanism (17) includes an outer tube inserted through and inserted into the side of the reactor body (1). A sampling plug rod (22) is slidably inserted into the inner end of the outer tube near the reactor body (1), and a vertical collection chamber (2201) is opened on the outer wall of the sampling plug rod (22). The bottom of the conical barrel frame (28) has multiple mounting notches (24), and each mounting notch (24) is fixed with a connecting rod (34). The end of the connecting rod (34) away from the conical barrel frame (28) is fixed to the inner wall of the reactor body (1) by bolts and screws. Each conical barrel frame (28) is fitted with a bearing at the top, and the transmission rod (5) passes vertically through the bearing at the top of each conical barrel frame (28). The outer circumference of the transmission rod (5) is fixed with a spoke fixing ring (30) at the top of the conical barrel frame (28), and the outer wall of the spoke fixing ring (30) is fixed with multiple spokes. The spoke scraper (31) and the spoke scraper (31) are all attached to the outer wall of the conical barrel frame (28). The bottom end of each spoke scraper (31) is fixed with a horizontally arranged swing return spring (32), and the axis of the swing return spring (32) passes through the axis of the transmission rod (5). The end of the swing return spring (32) away from the spoke scraper (31) is fixed with a fixing strip, and the bottom end of the fixing strip is fixed with an L-shaped shaking shovel plate (33). All the L-shaped shaking shovel plates (33) are centrally symmetrically distributed, and the lower surface of the L-shaped shaking shovel plate (33) is closely attached to the upper surface of the uniformly distributed net (26). The upper surface of the outer fixing ring (25) is fixed with multiple cliff-jumping triangular blocks (27) distributed at unequal distances, and the end of the L-shaped shaking shovel plate (33) away from the conical barrel frame (28) rests on the upper surface of the cliff-jumping triangular block (27); The outer wall of the reactor body (1) is fixed with a hydrogen supply pipe (11) at the end away from the catalyst feed pipe (2), and a distributor is provided on the hydrogen supply pipe (11) near the bottom of the conical barrel frame (28). A distributor gas supply pipe (23) is sleeved at the outlet end of each distributor. The end of the distributor gas supply pipe (23) away from the distributor is inserted into the gas inlet of the hydrogen outlet nozzle (37). The hydrogen outlet nozzle (37) includes an outer shell tube, and a gas outlet (372) is reserved at the end of the outer shell tube away from the gas inlet. The inner circumference of the outer shell tube is close to the gas outlet (372). A spring fixing arm (371) is fixed at the outlet (372). A tension spring is fixed on the side of the spring fixing arm (371) near the outlet (372), and a cover-shaped anti-reverse diffuser plate (373) is fixed on the end of the tension spring away from the spring fixing arm (371). Multiple notches (374) are opened on the inner edge of the anti-reverse diffuser plate (373). The air inlet of the outer shell tube is set at the eccentric position. A fan (376) is set inside the outer shell tube near the air inlet. An air gathering pipe (375) is set inside the outer shell tube directly opposite the air inlet. When there is no internal hydrogen ejection, the anti-reverse diffuser (373) is set with a tension spring, and the surface of the anti-reverse diffuser (373) is attached to the opening of the gas outlet (372) to form a seal.

2. The high-pressure hydrogenation reactor containing a sampling structure according to claim 1, characterized in that, The stirring mechanism includes a main motor frame (21) fixed at the top of the reactor body (1). A vertical drive motor (6) is provided at the top of the main motor frame (21), and the top of the transmission rod (5) is fixed to the output shaft end of the drive motor (6) by a coupling. The top of the reactor body (1) has a pre-reserved mounting hole, and a sealed bearing (29) and a shaft seal (7) adapted to the diameter of the transmission rod (5) are respectively provided on the inner and outer sides of the mounting hole.

3. A high-pressure hydrogenation reactor with a sampling structure according to claim 1, characterized in that, The outer circumference of the reactor body (1) is provided with an observation mirror (3) and a gas phase outlet (10) near the top, and a monitoring instrument installation pipe (4) is provided on the side of the pressure-resistant top cover (9) away from the liquid inlet (8).

4. A high-pressure hydrogenation reactor with a sampling structure according to claim 1, characterized in that, The catalyst feeding pipe (2) has an overall L-shaped structure with an obtuse angle. The section of the catalyst feeding pipe (2) near the reactor body (1) is a horizontal section, and the other section is an inclined sliding section. The inner wall of the inclined sliding section is provided with a horizontally arranged inner partition plate (203) near the lowest end. The inner partition plate (203) has a material passage hole in the middle. A spring baffle (201) is fixed at the top of the material passage hole. A reset spring (202) is fixed on the lower surface of the spring baffle (201). A one-way downward material plate (204) is fixed at the bottom end of the reset spring (202). The end of the one-way downward material plate (204) away from the reset spring (202) is hinged to the lower surface of the inner partition plate (203).

5. A high-pressure hydrogenation reactor with a sampling structure according to claim 1, characterized in that, The outer tube barrel has an irregularly shaped mounting hole at the end furthest from the opening, i.e., the end furthest from the reactor body (1), and a hydraulic telescopic rod (16) is fixed in the irregularly shaped mounting hole. The end of the extension rod of the hydraulic telescopic rod (16) is fixed to the tail end of the sampling plug rod (22) by bolts. The sampling plug rod (22) has a concave inclined surface (2202) at the end near the reactor body (1). The arc shape of the concave inclined surface (2202) is adapted to match the ground of the reactor body (1). The outer wall of the outer tube barrel has two vertical through holes at the end near the hydraulic telescopic rod (16), and the two through holes are concentric. A guide frame (18) is fixed above the upper through hole on the outer wall of the outer tube barrel. A sliding hole is opened in the middle of the guide frame (18). A discharge block is slidably connected in the sliding hole. A rack push rod (35) is fixed at the top of the discharge block. The diameter of the discharge block is less than or equal to the inner diameter of the collection chamber (2201).

6. A high-pressure hydrogenation reactor containing a sampling structure according to claim 5, characterized in that, The outer wall of the outer tube is fixed with a U-shaped guide groove (14) at the bottom of the through hole. A sample container (15) is slidably connected in the guide groove (14). A rack guide seat (20) is fixed at the top of the guide frame (18). A rack push rod (35) is slidably inserted in the rack guide seat (20). A servo motor (12) is also fixed on the side of the guide frame (18) near the top. An active gear (19) that meshes with the rack push rod (35) is fixed at the top of the output shaft of the servo motor (12).

Images