A catalyst support tray for a hydrogenation reactor

Abstract

The utility model relates to hydrogenation reactor technical field, specifically is a kind of catalyst support tray for hydrogenation reactor, including girder, the same circumferential angle and be several wire meshes of fan shape, unloading pipe, the wire mesh is horizontally laid in reactor and wire mesh is evenly arranged along the center of circle of the circle where reactor is, wire mesh outer diameter surface is bonded and fixedly connected with reactor inner wall, girder is arranged between two adjacent wire meshes and the two side surfaces of wire mesh adjacent are fixedly connected with the corresponding side surface of girder, unloading pipe is fixedly set with wire mesh and is penetrated through corresponding cold hydrogen tank, the upper end of unloading pipe is closed by detachable sealing cap. The use of the application, by the change of wire mesh shape, the change of girder layout position, can realize the transverse and longitudinal of wire mesh both play good stretching effect, can effectively prevent wire mesh deformation.

Description

Technical Field

[0001] This utility model belongs to the field of hydrogenation reactor technology, specifically a catalyst support plate for a hydrogenation reactor. Background Technology

[0002] The hydrogenation reactor is the core equipment of the hydrogenation unit and a key component of the hydrogenation process. Since the hydrogenation process involves an exothermic three-phase reaction (gas, liquid, and solid), the hydrogenation reactor is designed with multiple catalyst beds to ensure sufficient, uniform, and effective contact between the feed (gas and liquid phases) and the catalyst (solid phase). Each bed has a distribution plate at its top, and a temperature control structure (cold hydrogen box) is installed between the two beds to ensure safe and stable production of the hydrogenation unit and extend the catalyst's lifespan.

[0003] The existing catalyst bed is set up by using strip wire mesh with beams attached along the length of the mesh. The beams act as tension ropes to prevent the mesh from deforming under gravity. However, since the existing beams and mesh are set along the length, they can only provide good tension in the length direction, and the tension in the width direction is poor. With long-term use, this can also easily lead to the deformation of the mesh. Utility Model Content

[0004] This invention provides a catalyst support plate for a hydrogenation reactor to address the deficiencies in the prior art.

[0005] This utility model is achieved through the following technical solution:

[0006] A catalyst support plate for a hydrogenation reactor includes a main beam, several fan-shaped wire meshes with the same circumferential angle, and a discharge pipe. The wire meshes are laid horizontally inside the reactor and are evenly distributed along the center of the circle containing the reactor. The outer diameter surface of the wire meshes is attached to and fixedly connected to the inner wall of the reactor. The main beam is set between two adjacent wire meshes, and the two adjacent sides of the wire meshes are fixedly connected to the corresponding sides of the main beam. The discharge pipe is fixedly set to the wire meshes and passes through the corresponding cold hydrogen tank. The upper end of the discharge pipe is sealed with a removable sealing cap.

[0007] In use, because the wire mesh has a fan-shaped structure and the main beams are fixedly connected to both sides of the wire mesh, the main beams are inclined, thus generating a certain tensile force on both the transverse and longitudinal directions of the wire mesh. Furthermore, because they are evenly distributed along the center of the reactor, the force is more uniform, further preventing deformation of the wire mesh due to uneven force. The discharge pipe serves as a discharge channel for removing the catalyst when the reactor is shut down.

[0008] Preferably, the discharge pipe is located on the vertical axis of the reactor, with the inner diameter surface of the wire mesh fitting and fixedly connected to the outer surface of the discharge pipe. Positioning the discharge pipe on the vertical axis of the reactor allows catalyst on each wire mesh to enter the discharge pipe, thereby reducing the number of discharge pipes required, reducing the stress on the wire mesh, and further preventing wire mesh deformation.

[0009] Preferably, the upper end of the discharge pipe has an internal thread and is threadedly connected to an inner tube, the upper end of which is sealed by a sealing cap. Rotating the inner tube allows for separation between the inner tube and the discharge pipe, thereby enabling detachable installation between the sealing cap and the leakage pipe.

[0010] Preferably, the upper end of the sealing cap is an upwardly convex surface with the protrusion located on the vertical axis of the sealing cap. The discharge end of the catalyst feed pipe extends directly above the protrusion and bends downward to face it. The convex upper end of the sealing cap, located directly below the discharge end of the catalyst feed pipe, ensures that the catalyst is sprayed onto the convex surface during feeding, and then the convex surface can more evenly disperse the catalyst onto the wire mesh.

[0011] Preferably, the reactor also includes a receiving trough, which is arranged along the length of the catalyst feed pipe and fixedly installed inside the reactor. A discharge trough is formed on the bottom of the receiving trough, and the discharge trough is connected to the upper end of a guide pipe. The lower end of the guide pipe is connected to a distribution box, and a discharge hole is formed on the bottom of the distribution box, located directly below the catalyst feed pipe. The receiving trough catches the crude oil falling from above, allowing the crude oil to pass through the discharge trough, guide pipe, distribution box, and discharge hole onto the wire mesh located below the catalyst feed pipe. This ensures that the catalyst on the wire mesh, where it is blocked by the catalyst feed pipe, can contact the crude oil.

[0012] The beneficial effects of this utility model are as follows: By changing the shape of the wire mesh and the position of the main beam, this application can achieve a better stretching effect on both the transverse and longitudinal directions of the wire mesh, effectively preventing wire mesh deformation. At the same time, by placing the unloading pipe in the middle position, the catalyst can be unloaded through a single unloading pipe, reducing the number of unloading pipes used on the filter screen, thereby reducing the weight borne by the filter screen and further preventing its deformation. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 yes Figure 1 A schematic diagram of the AA section;

[0016] Figure 3 This is a schematic diagram showing the distribution of the receiving trough and the distribution box.

[0017] As shown in the figure:

[0018] 1. Wire mesh, 2. Main beam, 3. Discharge pipe, 4. Inner pipe, 5. Convex surface, 6. Receiving trough, 7. Guide pipe, 8. Distribution box, 9. Catalyst feed pipe. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] A catalyst support disk for a hydrogenation reactor, such as Figures 1-3 As shown, the reactor includes a main beam 2, several fan-shaped wire meshes 1 with identical circumferential angles, and a discharge pipe 3. The discharge pipe 3 is positioned along the vertical axis of the reactor. The wire meshes 1 are laid horizontally inside the reactor and are evenly distributed around the discharge pipe 3. The outer diameter surface of the wire meshes 1 is attached to and fixedly connected to the inner wall of the reactor, and the inner diameter surface of the wire meshes 1 is attached to and fixedly connected to the outer surface of the discharge pipe 3. The main beam 2 is positioned between two adjacent wire meshes 1, and the two adjacent sides of the wire meshes 1 are fixedly connected to the corresponding sides of the main beam 2. The main beam 2 extends to the discharge pipe 3. The discharge pipe 3 is fixedly positioned with the wire meshes 1 and passes through the corresponding cold hydrogen tank. The location of the cold hydrogen tank is based on existing technology and will not be described in detail. The upper end of the discharge pipe 3 is sealed with a removable sealing cap.

[0021] In use, because the wire mesh 1 has a fan-shaped structure and the main beam 2 is fixedly connected to both sides of the wire mesh 1, the main beam 2 is inclined, which can generate a certain tensile force on the wire mesh 1 in both the lateral and longitudinal directions. Furthermore, because it is evenly distributed along the center of the reactor, the force is more uniform, further preventing deformation of the wire mesh 1 due to uneven force. The discharge pipe 3 serves as a discharge channel for removing the catalyst when the reactor is shut down.

[0022] The discharge pipe 3 is located at the vertical axis of the reactor, which allows the catalyst on each wire mesh 1 to enter the discharge pipe 3, thereby reducing the number of discharge pipes 3 used, thus reducing the force on the wire mesh 1 and further preventing the wire mesh 1 from deforming.

[0023] The upper end of the discharge pipe 3 is threaded and connected to an inner pipe 4, the upper end of which is sealed by a sealing cap. Rotating the inner pipe 4 allows it to be separated from the discharge pipe 3, thus enabling the detachable installation of the sealing cap and the leakage pipe.

[0024] The upper end of the sealing cap is an upwardly convex surface 5 with the protrusion located on the vertical axis of the sealing cap. The discharge end of the catalyst feed pipe 9 extends directly above the protrusion and bends downward to face the protrusion. The convex surface 5 at the upper end of the sealing cap, located directly below the discharge end of the catalyst feed pipe 9, ensures that the catalyst is sprayed onto the convex surface 5 during feeding, and then the convex surface 5 can more evenly disperse the catalyst onto the wire mesh 1.

[0025] It also includes a receiving trough 6, which is arranged along the length of the catalyst feed pipe 9 and fixedly installed inside the reactor. A discharge trough is formed on the bottom surface of the receiving trough 6, and the discharge trough is connected to the upper end of a guide pipe 7. The lower end of the guide pipe 7 is connected to a distribution box 8, and a discharge hole is formed on the bottom surface of the distribution box 8, located directly below the catalyst feed pipe 9. The receiving trough 6 can catch the crude oil falling from above, allowing the crude oil to pass through the discharge trough, guide pipe 7, distribution box 8, and discharge hole onto the wire mesh 1 located below the catalyst feed pipe 9, thus ensuring that the catalyst on the wire mesh 1, where it is blocked by the catalyst feed pipe 9, can contact the crude oil.

[0026] By changing the shape of the wire mesh 1 and altering the placement of the main beam 2, this application achieves a better stretching effect on both the transverse and longitudinal directions of the wire mesh 1, effectively preventing deformation of the wire mesh 1. At the same time, by placing the unloading pipe 3 in the middle position, the catalyst can be unloaded through a single unloading pipe 3, reducing the number of unloading pipes 3 used on the filter screen, thereby reducing the weight load on the filter screen and further preventing its deformation.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A catalyst support disk for a hydrogenation reactor, characterized in that: The reactor includes a main beam, several fan-shaped wire meshes with the same circumference angle, and a discharge pipe. The wire meshes are laid horizontally inside the reactor and are evenly distributed along the center of the circle containing the reactor. The outer diameter surface of the wire meshes is attached to and fixedly connected to the inner wall of the reactor. The main beams are set between two adjacent wire meshes and the two adjacent sides of the wire meshes are fixedly connected to the corresponding sides of the main beams. The discharge pipes are fixedly set to the wire meshes and pass through the corresponding cold hydrogen tanks. The upper end of the discharge pipes is sealed with a removable sealing cap.

2. The catalyst support disk for the hydrogenation reactor according to claim 1, characterized in that: The discharge pipe is set on the vertical axis of the reactor, and the inner diameter surface of the wire mesh is attached to and fixedly connected to the outer surface of the discharge pipe.

3. The catalyst support disk for the hydrogenation reactor according to claim 2, characterized in that: The upper end of the unloading pipe is threaded and connected to an inner tube, the upper end of which is sealed by a cap.

4. The catalyst support disk for the hydrogenation reactor according to claim 3, characterized in that: The upper end of the sealing cap is an upward convex surface with the protrusion located on the vertical axis of the sealing cap. The discharge end of the catalyst feed pipe extends directly above the protrusion and bends downward to be directly opposite the protrusion.

5. The catalyst support disk for the hydrogenation reactor according to claim 4, characterized in that: It also includes a receiving trough, which is arranged along the length of the catalyst feed pipe and fixedly installed inside the reactor. A discharge trough is opened on the bottom surface of the receiving trough, and the upper end of the discharge trough is connected to the guide pipe. The lower end of the guide pipe is connected to the distribution box. A discharge hole is opened on the bottom surface of the distribution box, and the discharge hole is located directly below the catalyst feed pipe.

6. The catalyst support disk for the hydrogenation reactor according to claim 3, characterized in that: A rotating handle is fixedly installed on the outer side of the inner tube.

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