Noise reduction type fixed bed hydrogenation device

Abstract

The utility model relates to the technical field of fixed bed hydrogenation, and discloses a noise reduction type fixed bed hydrogenation device, the upper end of a reactor shell is provided with a reactor cover plate used for sealing, the center of the upper end of the reactor cover plate is provided with a feeding pipe used for feeding, the lower end of the reactor shell is provided with a discharging pipe used for discharging, and the lower end of the reactor shell is provided with a discharging pipe used for discharging. Noise generated in the reaction process can be effectively absorbed and blocked through the arrangement of the sound insulation cotton, in the hydrogenation reaction process, various chemical reactions and material flowing can generate large noise, the sound insulation cotton can greatly reduce the outward transmission degree of the noise, noise interference to the surrounding environment and workers is reduced, and the service life of the device is prolonged. A buffer structure composed of a buffer spring and a buffer plate can buffer internal vibration and impact generated by material impact, reaction vibration and the like, noise caused by vibration is reduced by reducing the vibration generated by equipment operation and transmitted to a reactor shell, and the noise reduction performance of the device is remarkably improved through the synergistic effect of the buffer structure and sound insulation cotton.

Description

Technical Field

[0001] This utility model relates to the field of fixed-bed hydrogenation technology, specifically a noise-reducing fixed-bed hydrogenation device. Background Technology

[0002] In the chemical industry, fixed-bed hydrogenation units are common equipment used for various hydrogenation reactions, such as hydrodesulfurization, hydrodenitrogenation, and hydrocracking. These reactions are usually carried out under high temperature and high pressure conditions and involve the interaction of multiple chemical substances, which can generate significant noise and vibration. Traditional fixed-bed hydrogenation units often neglect noise and vibration control in their design, resulting in a harsh working environment that not only affects the tranquility of the surrounding environment but also poses a threat to the physical and mental health of the operators.

[0003] Specifically, during the hydrogenation reaction, the high-speed flow of materials in the reactor and the chemical reaction itself generate strong noise. If this noise is not effectively treated, it will spread to the work area, affecting normal communication and work efficiency, and in severe cases, it may even cause hearing damage. In addition, the material impact and reaction vibration inside the reactor will also generate significant vibration. If these vibrations are not effectively suppressed, they will not only accelerate the wear and tear of the equipment and shorten its service life, but may also cause structural safety problems.

[0004] To address the aforementioned issues, we propose a noise-reducing fixed-bed hydrogenation device. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a noise-reducing fixed-bed hydrogenation device, which solves the aforementioned problems.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a noise-reducing fixed-bed hydrogenation device, comprising a reactor shell, a reactor cover plate for sealing installed at the upper end of the reactor shell, a feed pipe for feeding installed at the center of the upper end of the reactor cover plate, and a discharge pipe for discharging material installed at the lower end of the reactor shell, further comprising:

[0007] A buffer assembly, installed inside the reactor shell, is a structure used to buffer the inner shell.

[0008] Preferably, an outer support frame is installed on the outside of the reactor shell for support, and a plurality of support feet are installed at the lower end of the outer support frame for support. A buffer pad for cushioning is provided at the connection between the outer support frame and the reactor shell. A connecting flange for connection is installed on the outside of the connection between the reactor shell and the reactor cover plate. Fixing bolts for fixing are evenly installed on the surface of the connecting flange. A sealing gasket for sealing is installed inside the connection between the reactor shell and the reactor cover plate.

[0009] Preferably, a transition fitting is installed at the connection between the feed pipe and the reactor cover plate, and the lower end of the feed pipe extends into the interior of the reactor cover plate and connects with the flow divider plate. The lower end of the flow divider plate is provided with a plurality of jet holes evenly distributed.

[0010] Preferably, the reactor shell is provided with an inner shell, the upper half of which is fixedly installed with a flow-diverting plate for flow diversion, a catalyst plate is provided at the lower end of the flow-diverting plate, a conical funnel is provided at the lower end of the catalyst plate, and positioning grooves are provided at both ends of the inner shell. Positioning blocks for positioning are installed inside the positioning grooves, and the positioning blocks are fixedly installed on the side of the catalyst plate.

[0011] Preferably, the buffer assembly includes sound-absorbing cotton, a buffer spring, and a buffer plate. The sound-absorbing cotton for buffering is installed inside the reactor shell. Multiple mounting grooves are evenly installed on the surface of the sound-absorbing cotton. A buffer spring for buffering is fixedly installed on the inner wall of the reactor shell at the position corresponding to the mounting groove. The other end of the buffer spring is fixedly connected to the buffer plate. The inner end of the buffer plate is inclined and is fitted to the outer surface of the inner shell.

[0012] Preferably, a sealing plate for sealing is installed at the upper end of the sound insulation cotton, and multiple L-shaped columns for support are evenly installed inside the sound insulation cotton, with the inner shell installed at the inner end of the L-shaped columns.

[0013] Preferably, the sound insulation cotton is internally surrounded by heating tubes for heating.

[0014] Compared with the prior art, this utility model provides a noise-reducing fixed-bed hydrogenation device, which has the following beneficial effects:

[0015] 1. This noise-reducing fixed-bed hydrogenation unit features sound-insulating cotton that effectively absorbs and blocks noise generated during the reaction process. During hydrogenation, various chemical reactions and material flow generate significant noise. The sound-insulating cotton significantly reduces the outward propagation of noise, minimizing noise interference to the surrounding environment and personnel. The buffer structure, composed of buffer springs and buffer plates, buffers vibrations and impacts caused by material impacts and reaction vibrations. By reducing the transmission of vibrations generated during equipment operation to the reactor shell, it further reduces noise caused by vibration. Together with the sound-insulating cotton, this significantly improves the noise reduction performance of the unit.

[0016] 2. This noise-reducing fixed-bed hydrogenation unit has an outer support frame and support feet that provide solid support for the unit, ensuring that the unit remains stable during operation and can withstand the pressure generated by the materials and reaction inside the reactor. The catalyst plate is precisely positioned and installed inside the inner shell through positioning blocks and positioning grooves, ensuring the stability and accuracy of the internal structure during the reaction process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the buffer component of this utility model;

[0020] Figure 4 This utility model Figure 3 Partial sectional view.

[0021] In the diagram: 1. Reactor shell; 2. Outer support frame; 3. Support feet; 4. Discharge pipe; 5. Reactor cover plate; 6. Inlet pipe; 7. Connecting flange; 8. Fixing bolts; 9. Adapter; 10. Diverter plate; 11. Flow buffer plate; 12. Sealing gasket; 13. Sealing plate; 14. Sound insulation cotton; 15. L-shaped column; 16. Heating tube; 17. Buffer spring; 18. Buffer plate; 19. Inner shell; 20. Positioning block; 21. Catalyst plate; 22. Conical funnel; 23. Positioning groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 A noise-reducing fixed-bed hydrogenation device includes a reactor shell 1, a reactor cover plate 5 for sealing is installed at the upper end of the reactor shell 1, a feed pipe 6 for feeding is installed at the center of the upper end of the reactor cover plate 5, and a discharge pipe 4 for discharging is installed at the lower end of the reactor shell 1. It also includes a buffer assembly, installed inside the reactor shell 1, for buffering the inner shell 19. Raw material enters through the feed pipe 6, passes through a connector 9, and reaches a flow divider 10. The flow divider 10 evenly distributes the raw material, allowing it to enter the reactor interior more uniformly. The distributed raw material then impacts a flow slowing plate 11, which initially buffers and decelerates the raw material, preventing it from directly impacting the internal structure at high speed and stabilizing the material flow. The material then flows through a catalyst plate 21, where a hydrogenation reaction occurs under the action of the catalyst. The catalyst plate 21 inside the inner shell 19 contains a catalyst, and the raw material and hydrogen undergo a hydrogenation reaction under the action of the catalyst.

[0024] Furthermore, an outer support frame 2 is installed on the outside of the reactor shell 1 for support. Multiple support feet 3 are installed at the lower end of the outer support frame 2 for support. A buffer pad is provided at the connection between the outer support frame 2 and the reactor shell 1 for cushioning. A connecting flange 7 is installed on the outside of the connection between the reactor shell 1 and the reactor cover plate 5 for connection. Fixing bolts 8 are evenly installed on the surface of the connecting flange 7 for fixing. A sealing gasket 12 is installed inside the connection between the reactor shell 1 and the reactor cover plate 5 for sealing. The outer support frame 2 and the buffer pad reduce the vibration transmitted by the reactor shell 1. The connecting flange 7 and the fixing bolts 8 connect the reactor shell 1 and the reactor cover plate 5.

[0025] Furthermore, a connector 9 for transfer is installed at the connection between the feed pipe 6 and the reactor cover plate 5. The lower end of the feed pipe 6 extends into the interior of the reactor cover plate 5 and connects to the diversion plate 10. The lower end of the diversion plate 10 is provided with a plurality of uniformly arranged jet holes. The feed pipe 6 is installed inside the reactor cover plate 5 through the connector 9. The diversion plate 10 distributes the incoming raw material, preventing the raw material from accumulating in one place.

[0026] Furthermore, an inner shell 19 is provided inside the reactor outer shell 1. A flow-diverting plate 11 for flow diversion is fixedly installed on the upper half of the inner shell 19. A catalyst plate 21 is provided at the lower end of the flow-diverting plate 11. A conical funnel 22 is provided at the lower end of the catalyst plate 21. Positioning grooves 23 are provided at both ends inside the inner shell 19. Positioning blocks 20 for positioning are installed inside the positioning grooves 23. The positioning blocks 20 are fixedly installed on the side ends of the catalyst plate 21. The catalyst plate 21 is positioned and installed inside the inner shell 19 by the positioning blocks 20 and the positioning grooves 23, which ensures the stability and accuracy of the internal structure.

[0027] Furthermore, the buffer assembly includes sound-absorbing cotton 14, a buffer spring 17, and a buffer plate 18. The sound-absorbing cotton 14 for buffering is installed inside the reactor shell 1. Multiple mounting grooves are evenly installed on the surface of the sound-absorbing cotton 14. The buffer spring 17 for buffering is fixedly installed on the inner wall of the reactor shell 1 at the position corresponding to the mounting groove. The other end of the buffer spring 17 is fixedly connected to the buffer plate 18. The inner end of the buffer plate 18 is inclined and fits against the outer surface of the inner shell 19. The sound-absorbing cotton 14 can absorb and block the noise generated during the reaction process and prevent the noise from spreading outward. At the same time, the buffer spring 17 and the buffer plate 18 can buffer the internal vibration and impact, reducing the vibration generated by the operation of the equipment from being transmitted to the reactor shell 1.

[0028] Furthermore, a sealing plate 13 for sealing is installed on the upper end of the sound insulation cotton 14, and multiple L-shaped columns 15 for support are evenly installed inside the sound insulation cotton 14. The inner shell 19 is installed on the inner end of the L-shaped columns 15. The sealing plate 13 seals the upper end of the sound insulation cotton 14, and the L-shaped columns 15 support the inner shell 19, so that the inner shell 19 is isolated from the reactor outer shell 1.

[0029] Furthermore, the interior of the sound insulation cotton 14 is surrounded by heating tubes 16 for heating, which heat the inner shell.

[0030] Structural Description:

[0031] 1. Reactor shell: The reactor shell is the external enclosure structure of the entire hydrogenation unit. It is usually made of high-strength metal materials and has good pressure resistance and corrosion resistance. The whole is in the shape of a closed column or tank, which isolates the reaction area inside the unit from the external environment and provides a relatively stable space for hydrogenation reaction. The upper and lower ends of the shell are used to install the reactor cover plate and the discharge pipe, respectively, and various interfaces can be set on the side for connecting auxiliary equipment.

[0032] 2. External support frame: The external support frame is installed on the outside of the reactor shell and is generally welded from structural steel. It presents an overall frame structure and acts as the "skeleton" of the device. It provides the main support force for the entire hydrogenation unit, evenly distributes the weight of the unit and the pressure generated by the internal reaction, and ensures the stability of the unit during operation. The external support frame is fixed to the support feet by welding or bolting. At the same time, a buffer pad is set at the connection between the external support frame and the reactor shell to reduce the impact of vibration and other factors on the reactor shell.

[0033] 3. Support feet: The support feet are located at the lower end of the outer support frame. There are usually multiple support feet that are evenly distributed. The support feet are generally made of sturdy metal and are mostly columnar or block-shaped with a large bottom area to increase the contact area with the ground and improve the stability of the device. The support feet are in direct contact with the ground and transfer the weight of the entire device to the ground, ensuring that the device remains stable under various working conditions and preventing the device from tilting or shifting.

[0034] 4. Discharge pipe: The discharge pipe is installed at the lower end of the reactor shell and is the channel for discharging the reaction products. The discharge pipe is generally a tubular structure, and its diameter is designed according to the processing capacity of the device. The material must have good corrosion resistance and a certain strength to withstand the pressure and chemical properties of the reaction products. The discharge pipe is usually connected to the reactor shell by welding or flange connection to ensure the sealing of the connection and prevent product leakage.

[0035] 5. Reactor cover plate: The reactor cover plate is installed at the upper end of the reactor shell and is used to close the top opening of the reactor shell. The reactor cover plate is generally made of metal sheet and its shape matches the top opening of the reactor shell. It is mostly round or square. It is tightly connected to the reactor shell by connecting flanges and fixing bolts. A sealing gasket is installed at the connection to ensure the airtightness of the device. The feed pipe interface is set at the center of the reactor cover plate for installing the feed pipe.

[0036] 6. Feed pipe: The feed pipe is installed at the center of the upper end of the reactor cover plate and is the channel for raw materials to enter the device. The feed pipe has a tubular structure and its diameter is designed according to the flow rate and properties of the raw materials. The material must be able to adapt to the chemical properties and conveying pressure of the raw materials. The lower end of the feed pipe extends into the reactor and is connected to the diversion plate through an adapter to ensure that the raw materials can smoothly enter the reactor and achieve uniform diversion.

[0037] 7. Connecting Flange: The connecting flange is installed on the outside of the connection between the reactor shell and the reactor cover plate. It is an important component for connecting the two. Connecting flanges are usually used in pairs and are fixed to the edges of the reactor shell and the reactor cover plate respectively. They are annular in shape and have multiple evenly distributed bolt holes on their surface. The two connecting flanges are tightly connected together by fixing bolts, thereby achieving a reliable connection between the reactor shell and the reactor cover plate. The material of the connecting flange is generally the same as that of the reactor shell and the reactor cover plate to ensure good connection strength and sealing.

[0038] 8. Fixing bolts: Fixing bolts are installed in the bolt holes of the connecting flange to fasten the connecting flange, thereby firmly connecting the reactor shell and the reactor cover plate together. The fixing bolts are generally high-strength bolts, and their length and diameter are selected according to the size of the connecting flange and the design requirements of the device. The fixing bolts are threaded into the bolt holes of the connecting flange, and a preload is applied during the tightening process to ensure the sealing and connection strength of the connection.

[0039] 9. Adapter: The adapter is installed at the connection between the feed pipe and the flow divider plate, serving as a transition and connection. The shape and structure of the adapter are designed according to the specific shape and connection requirements of the feed pipe and the flow divider plate. Generally, it is a connector with a certain angle and shape. Its internal channel ensures that the raw material can flow smoothly from the feed pipe into the flow divider plate. The connection between the adapter and the feed pipe and the flow divider plate is usually welding or threaded connection to ensure the firmness and sealing of the connection.

[0040] 10. Diverter Plate: The diverter plate is installed at the lower end of the feed pipe and located inside the reactor. The diverter plate is generally a flat plate structure with multiple jet holes evenly arranged on its surface. After the raw material enters the diverter plate through the feed pipe, it is evenly sprayed out from the jet holes to achieve uniform diversion of the raw material. This allows the raw material to be more evenly distributed inside the reactor and to fully contact the catalyst, thereby improving the reaction efficiency. The material of the diverter plate must have certain corrosion resistance and strength to adapt to the reaction environment.

[0041] 11. Flow buffer: The flow buffer is fixedly installed in the upper part of the inner shell, located below the flow divider. The flow buffer is generally flat or has a certain curvature. Its function is to initially buffer and decelerate the raw material after it has been diverted by the flow divider, so as to avoid the raw material directly impacting the internal structure at high speed and stabilize the material flow. The material of the flow buffer is matched with other components inside the reactor and can withstand the impact of the material and the influence of the reaction environment.

[0042] 12. Sealing gasket: The sealing gasket is installed inside the connection between the reactor shell and the reactor cover plate, located on the inside of the connecting flange. The sealing gasket is generally a ring-shaped sheet structure, made of materials with good elasticity and sealing performance, such as rubber and silicone. When the fixing bolts are tightened and the connecting flange is tightened, the sealing gasket is squeezed and deformed, filling the tiny gaps at the connection, thereby achieving a good sealing effect and preventing the leakage of reactants.

[0043] 13. Sealing plate: The sealing plate is installed on the top of the sound insulation cotton to seal the top of the sound insulation cotton. The sealing plate is generally a flat structure, and the material is matched with the installation structure of the sound insulation cotton. It is fixed to the top edge of the sound insulation cotton by welding, bolting or other suitable methods to ensure that a relatively closed space is formed inside the sound insulation cotton, thereby improving the sound insulation effect.

[0044] 14. Sound insulation cotton: The sound insulation cotton is installed inside the reactor shell and is a key component for noise reduction. The sound insulation cotton is in the form of a block or sheet and fills the space between the outer shell and the inner shell of the reactor. Multiple mounting grooves are evenly installed on the surface of the sound insulation cotton. It works in conjunction with the buffer springs and buffer plates fixed on the inner wall of the reactor. The sound insulation cotton has good sound absorption performance and can effectively absorb and block the noise generated during the reaction process, reducing the degree of noise transmission.

[0045] 15. L-shaped columns: L-shaped columns are evenly installed inside the sound insulation cotton to support the inner shell. One end of the L-shaped column is fixed to the internal structure of the sound insulation cotton, and the other end is connected to the inner shell. The L-shaped column is L-shaped and made of metal material. It has a certain strength and rigidity, which can provide stable support for the inner shell, ensure the stability of the inner shell inside the reactor, and also help maintain the structural stability of the sound insulation cotton.

[0046] 16. Heating tube: The heating tube is installed around the inside of the sound insulation cotton and is used to heat the reaction area. The heating tube is generally a tubular structure and is made of materials with good thermal conductivity and high temperature resistance, such as stainless steel. The heating tube is connected to the power supply through a specific circuit connection method. After being powered on, it generates heat to provide suitable temperature conditions for the hydrogenation reaction and ensure that the reaction can proceed efficiently at the appropriate temperature.

[0047] 17. Buffer Spring: The buffer spring is fixedly installed on the inner wall of the reactor at the position corresponding to the sound insulation cotton installation groove. One end of the spring is connected to the inner wall of the reactor, and the other end is fixedly connected to the buffer plate. The buffer spring is generally a spiral structure made of spring steel and has good elasticity. During the operation of the device, the buffer spring can buffer the vibration and impact caused by material impact, reaction vibration, etc., and reduce the vibration transmitted to the outer shell of the reactor. It works together with the buffer plate and sound insulation cotton to improve the noise reduction performance of the device.

[0048] 18. Buffer plate: The buffer plate is fixedly connected to the other end of the buffer spring. Its inner end is inclined and fits against the outer surface of the inner shell. The buffer plate is generally a flat structure and the material has a certain strength and wear resistance. Under the action of the buffer spring, the buffer plate can buffer the internal vibration and impact, guide the flow direction of the material, further stabilize the material flow, and reduce the impact of the material on the internal structure.

[0049] 19. Inner Shell: The inner shell is located inside the outer shell of the reactor and is the main area where the reaction occurs. The inner shell is generally made of corrosion-resistant metal material and its shape matches the outer shell of the reactor. It is mostly columnar or can-shaped. The upper part of the inner shell is fixedly installed with a flow-damping plate, and the two ends of the inner shell are provided with positioning grooves for installing positioning blocks and fixing the position of components such as catalyst plates. The inner shell is connected to the sound insulation cotton through L-shaped columns, and plays the role of supporting and separating the reaction area inside the device.

[0050] 20. Positioning Block: The positioning block is installed inside the positioning groove and fixedly installed on the side of the catalyst plate. The positioning block is generally a block structure, and its material matches the inner shell and the catalyst plate. The cooperation between the positioning block and the positioning groove can accurately determine the position of the catalyst plate inside the reactor, ensure the stability of the catalyst plate during the reaction process, and facilitate the stable flow of materials and the smooth progress of the reaction.

[0051] 21. Catalyst Plate: The catalyst plate is installed inside the inner shell, below the flow buffer. The catalyst plate is generally a flat plate structure with the catalyst required for the hydrogenation reaction loaded on its surface. The catalyst plate is fixed inside the inner shell by the cooperation of positioning blocks and positioning grooves. Its position and angle are precisely designed to ensure that the raw materials can fully contact the catalyst when flowing through the catalyst plate to carry out an efficient hydrogenation reaction. The material of the catalyst plate must have good corrosion resistance and mechanical strength to adapt to the reaction environment and the erosion of materials.

[0052] 22. Conical Funnel: The conical funnel is located at the lower end of the catalyst plate and is used to collect the products after the reaction. The conical funnel is shaped like a cone with a wider top and a narrower bottom. It is made of metal material and has a certain strength and corrosion resistance. The products after the reaction flow into the conical funnel under the action of gravity. Through the collection effect of the conical funnel, the products can be discharged from the reactor from the discharge pipe in a more concentrated manner.

[0053] 23. Positioning groove: The positioning groove is located at both ends of the inner shell and is a structure used to install the positioning block. The positioning groove is generally a strip-shaped or groove-shaped structure, and its shape and size match the positioning block. The positioning groove is fixed inside the inner shell by means of processing or welding, providing an installation position for the positioning block, thereby achieving accurate positioning of components such as catalyst plates and ensuring the stability and accuracy of the internal structure during the reaction process.

[0054] Instructions for use

[0055] Working principle: Raw materials enter through the feed pipe 6, pass through the adapter 9, and reach the diversion plate 10. The diversion plate 10 evenly distributes the raw materials, allowing them to enter the reactor more uniformly. The diverted raw materials then impact the flow buffer 11, which initially buffers and slows down the materials, preventing them from directly impacting the internal structure at high speed and stabilizing the material flow. The materials then flow through the catalyst plate 21, where a hydrogenation reaction occurs under the action of the catalyst. The catalyst plate 21 inside the inner shell 19 contains the catalyst. The raw materials and hydrogen undergo a hydrogenation reaction under the action of the catalyst. The heating pipe 16 heats the reaction zone, providing the necessary temperature conditions to ensure the hydrogenation reaction proceeds efficiently at a suitable temperature. The reaction products are collected through the conical funnel 22. The material is then discharged from the reactor through the discharge pipe 4. During operation, the sound insulation cotton 14 can absorb and block the noise generated during the reaction process, preventing the noise from spreading outward. At the same time, the impact spring 17 and the buffer plate 18 can buffer the internal vibration and impact, reducing the transmission of vibration generated by the equipment operation to the reactor shell 1. Through cooperation, the device is noise-reducing. The outer support frame 2 and the support feet 3 provide support for the device, ensuring the stability of the device. The reactor shell 1 and the reactor cover plate 5 are connected by the connecting flange 7 and the fixing bolts 8. The sealing gasket 12 at the connection ensures the sealing of the device and prevents the leakage of reactants. Meanwhile, the catalyst plate 21 is positioned and installed inside the inner shell 19 by the positioning block 20 and the positioning groove 23, ensuring the stability and accuracy of the internal structure.

[0056] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixed bed hydrogenation device of noise reduction type comprising a reactor shell (1), an upper end of the reactor shell (1) is provided with a reactor cover plate (5) for sealing, a center of an upper end of the reactor cover plate (5) is provided with a feeding pipe (6) for feeding, a lower end of the reactor shell (1) is provided with a discharging pipe (4) for discharging, characterized in that, Also include: Buffering components, installed inside the reactor shell (1), for buffering the structure of the inner shell (19).

2. The fixed bed hydroprocessing apparatus of claim 1, wherein: The outer side of the reactor shell (1) is provided with an outer support frame (2) for support, and the lower end of the outer support frame (2) is provided with a plurality of support feet (3) for support. The connection between the outer support frame (2) and the reactor shell (1) is provided with a buffer pad for buffering. The connection between the reactor shell (1) and the reactor cover plate (5) is provided with a connecting flange (7) for connection on the outside. The surface of the connecting flange (7) is uniformly provided with a fixing bolt (8) for fixing. The connection between the reactor shell (1) and the reactor cover plate (5) is internally provided with a sealing gasket (12) for sealing.

3. The fixed bed hydroprocessing apparatus of claim 1, wherein: The connecting part of the inlet pipe (6) and the reactor cover plate (5) is provided with a switching piece (9) for switching. The lower end of the inlet pipe (6) extends to the inside of the reactor cover plate (5) and is connected with the flow distribution plate (10). The lower end of the flow distribution plate (10) is provided with a plurality of jet holes.

4. The fixed bed hydroprocessing apparatus of claim 1, wherein: The inside of the reactor shell (1) is provided with an inner shell (19). The upper half of the inner shell (19) is fixedly provided with a buffer plate (11) for flow distribution. The lower end of the buffer plate (11) is provided with a catalyst plate (21). The lower end of the catalyst plate (21) is provided with a conical funnel (22). The inside of the inner shell (19) is provided with a positioning groove (23) at both ends. The positioning groove (23) is internally provided with a positioning block (20) for positioning. The positioning block (20) is fixedly installed at the side end of the catalyst plate (21).

5. The fixed bed hydroprocessing apparatus of claim 1, wherein: The buffering component includes soundproof cotton (14), buffer spring (17) and buffer plate (18). The inside of the reactor shell (1) is provided with soundproof cotton (14) for buffering. The surface of the soundproof cotton (14) is uniformly provided with a plurality of mounting grooves. The inner wall of the reactor shell (1) is fixedly provided with a buffer spring (17) for buffering at the position corresponding to the mounting groove. The other end of the buffer spring (17) is fixedly connected with the buffer plate (18). The inner end of the buffer plate (18) is obliquely arranged. The inner end of the buffer plate (18) is arranged in a close manner with the outer surface of the inner shell (19).

6. A fixed bed hydroprocessing apparatus of the noise reduction type according to claim 5, characterized in that: The upper end of the soundproof cotton (14) is provided with a sealing plate (13) for sealing. The inside of the soundproof cotton (14) is uniformly provided with a plurality of L-shaped columns (15) for support. The inner shell (19) is installed at the inner end of the L-shaped column (15).

7. A fixed bed hydroprocessing apparatus of the type defined by claim 5, characterised in that: The inside of the soundproof cotton (14) is surrounded by a heating pipe (16) for heating.

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