Gas-solid heterogeneous catalytic sulfuration reaction spray structure

Abstract

The utility model provides a kind of gas-solid multiphase catalytic vulcanization reaction spraying structure, effectively solve the problem that current spraying structure cannot spray a large amount of liquid active component to fixed bed in short time;Its technical solution is, including horizontal annular pipe, vertical water inlet pipe is arranged in annular pipe middle part, and multiple connecting pipes are communicated between water inlet pipe and annular pipe;Annular pipe lower end has multiple evenly distributed spraying units;Spraying unit includes vertical vertical pipe, vertical pipe upper end is communicated with annular pipe, rotatable disc is installed in vertical pipe lower end, multiple circumferentially distributed injection ports are set up on disc, and multiple circumferentially distributed spiral blades are fixed on disc upper end;Rotatable shaft is in disc middle part, and multiple inclined wings are installed in the lower end of rotating shaft;The utility model structure is ingenious, greatly increases unit time spraying amount by the reform of traditional spraying structure, and a large amount of liquid active component can be evenly sprayed to catalyst bed in short time.

Description

Technical Field

[0001] This utility model relates to the field of gas-solid multiphase catalytic sulfidation reaction technology, and in particular to a spray structure for gas-solid multiphase catalytic sulfidation reaction. Background Technology

[0002] A fixed-bed reactor refers to a reactor filled with granular solid catalysts or solid reactants, forming a bed of a certain height. Gas or liquid materials flow through the gaps between the particles into the stationary fixed bed, simultaneously achieving a heterogeneous reaction process. After a long catalytic sulfidation reaction, the catalyst becomes deactivated. At this point, it is necessary to add liquid active components to the heated catalyst to achieve secondary activation, typically using a spray distributor. Existing sprayers have a simple structure. For example, the spray tower with a dual-channel liquid distributor disclosed in patent document CN210251788U has fixed spray nozzles, and the water path remains stationary during spraying. The spray effect is mainly achieved through atomization under high pressure. While this solves the problem of uniform spraying, it also has significant drawbacks: because uniform spraying is achieved through atomization, the spray nozzles in traditional structures are relatively small, which greatly limits the spray flow rate per unit time. However, in the secondary activation of the catalyst, a large amount of liquid active components needs to be rapidly sprayed onto the solid catalyst bed. Therefore, the existing spray structure clearly does not meet production requirements.

[0003] To address the aforementioned issues, a gas-solid multiphase catalytic sulfidation reaction spray structure is provided. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a gas-solid multiphase catalytic sulfidation reaction spray structure, which effectively solves the problem that the existing spray structure cannot spray a large amount of liquid active components onto the fixed bed in a short time.

[0005] The technical solution includes a horizontal annular pipe with a vertical water inlet pipe in the middle, and the water inlet pipe is connected to the annular pipe by multiple connecting pipes; there are multiple evenly distributed spray units at the lower end of the annular pipe. The spray unit includes a vertical pipe, the upper end of which is connected to an annular pipe. A rotatable disc is installed at the lower end of the vertical pipe, and multiple circumferentially distributed spray nozzles are opened on the disc. Multiple circumferentially distributed spiral blades are fixed at the upper end of the disc. A rotatable shaft is located in the middle of the disc, and multiple inclined blades are installed at the lower end of the shaft. During the process of high-pressure liquid flowing down from the annular pipe through the vertical pipe and finally being sprayed out from the spray nozzles, the high-pressure liquid drives the disc to rotate through the spiral blades, causing the multiple spray nozzles to rotate and spray. The water flow sprayed from the spray nozzles impacts the multiple inclined blades, causing them to rotate. The rotating blades disperse the water flow, ultimately achieving uniform liquid spraying.

[0006] Furthermore, the disc has a downward-facing cylindrical shell in the middle, the shaft is rotatably mounted inside the cylindrical shell via a bearing, the inner edge of the helical blade is fixed to the outer circumference of the cylindrical shell, and the outer edge of the helical blade is clearance-fitted with the inner wall of the vertical cylinder.

[0007] Furthermore, the injection nozzle protrudes downward to form a cone shape.

[0008] Furthermore, the edge of the wing plate away from the pivot is provided with multiple spikes and is serrated.

[0009] Furthermore, a spray unit is provided at the lower end of both the water inlet pipe and the lower end of the connecting pipe.

[0010] This invention has a clever structure. By modifying the traditional spray structure, it greatly increases the spray volume per unit time, enabling a large amount of liquid active components to be sprayed evenly onto the catalyst bed in a short time. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0012] Figure 2 This is a schematic diagram of the spray unit in this utility model (vertical pipe not shown).

[0013] Figure 3 This is a schematic diagram showing the installation of the disc, spiral blade, rotating shaft, and wing plate in this utility model.

[0014] Figure 4 This is a schematic diagram of the disk and spiral blade structure in this utility model.

[0015] Figure 5 This is a schematic diagram of the rotating shaft and wing plate structure of this utility model. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0017] Depend on Figures 1 to 5 As shown, this utility model includes a horizontal annular pipe 1, a vertical water inlet pipe 2 is provided in the middle of the annular pipe 1, and the water inlet pipe 2 is connected to the annular pipe 1 through multiple connecting pipes 3; there are multiple evenly distributed spray units at the lower end of the annular pipe 1. The spray unit includes a vertical pipe 4, the upper end of which is connected to an annular pipe 1. A rotatable disc 5 is installed at the lower end of the vertical pipe 4. Multiple circumferentially distributed spray nozzles 6 are opened on the disc 5. Multiple circumferentially distributed spiral blades 7 are fixed at the upper end of the disc 5. A rotatable shaft 8 is located in the middle of the disc 5. Multiple inclined blades 9 are installed at the lower end of the shaft 8. During the process of high-pressure liquid flowing down from the annular pipe 1 through the vertical pipe 4 and finally being sprayed out from the spray nozzles 6, the high-pressure liquid drives the disc 5 to rotate through the spiral blades 7, causing the multiple spray nozzles 6 to rotate and spray. The water flow sprayed from the spray nozzles 6 impacts the multiple inclined blades 9, causing them to rotate. The rotating blades 9 disperse the water flow, ultimately achieving uniform liquid spraying.

[0018] To prevent the helical blade 7 from deforming under high pressure and to enhance its resistance to deformation, a cylindrical shell 10 with an opening facing downward is provided in the middle of the disc 5. The rotating shaft 8 is rotatably installed inside the cylindrical shell 10 via a bearing. The inner edge of the helical blade 7 is fixed on the outer circular surface of the cylindrical shell 10, and there is a clearance fit between the outer edge of the helical blade 7 and the inner wall of the vertical cylinder.

[0019] In order to make the water flow more impactful, thereby causing the multiple vanes 9 to rotate faster, and ultimately enabling the vanes 9 to disperse the liquid and spray it evenly, the spray nozzle 6 protrudes downward to form a cone shape.

[0020] In order for the wing plate 9 to disperse the liquid and spray it evenly to the surrounding area, the edge of the wing plate 9 away from the pivot 8 is provided with multiple spikes and is serrated.

[0021] In order to spray the middle of the catalyst bed more evenly, spraying units are provided at the lower ends of the water inlet pipe 2 and the connecting pipe 3.

[0022] It is worth noting that, compared with traditional spray nozzles, this invention has a rotating disc 5 and a rotating wing plate 9 set in the spray nozzle 6, so that the spray nozzle 6 itself can rotate, and the coverage area is wider and more uniform. This is the first dispersion. The rotating wing plate 9 disperses the water flow and throws and sprays it in all directions, and the liquid is dispersed a second time.

[0023] In use, the device is fixed above the solid catalyst bed in the reactor, with a certain gap between the annular pipe 1 and the side wall of the reactor. After the deactivated solid catalyst is dried by hot air, the liquid active component is introduced into the water inlet pipe 2. The liquid reaches each spray unit through the connecting pipe 3 and the annular pipe 1. When the high-pressure liquid flows through the vertical pipe 4, the disc 5 rotates under the action of multiple spiral blades 7. The spray nozzles 6 on the disc 5 rotate with the disc 5. The water jet from the spray nozzles 6 impacts multiple wing plates 9, causing the multiple wing plates 9 to rotate. During the rotation of the wing plates 9, the liquid active component is sprayed onto the solid catalyst bed quickly and efficiently.

[0024] This invention has a clever structure. By modifying the traditional spray structure, it greatly increases the spray volume per unit time, enabling a large amount of liquid active components to be sprayed evenly onto the catalyst bed in a short time.

Claims

1. A gas-solid multiphase catalytic sulfidation reaction spray structure, characterized in that, It includes a horizontal annular pipe (1), a vertical water inlet pipe (2) is provided in the middle of the annular pipe (1), and the water inlet pipe (2) is connected to the annular pipe (1) through multiple connecting pipes (3); there are multiple evenly distributed spray units at the lower end of the annular pipe (1); The spray unit includes a vertical pipe (4), the upper end of which is connected to an annular pipe (1), and a rotatable disc (5) installed at the lower end of the vertical pipe (4). The disc (5) has multiple circumferentially distributed spray nozzles (6) and multiple circumferentially distributed spiral blades (7) fixed at the upper end of the disc (5). The disc (5) has a rotatable shaft (8) in the middle, and multiple inclined wing plates (9) are installed at the lower end of the shaft (8). During the process of the high-pressure liquid being sprayed from the annular pipe (1) down through the vertical pipe (4) and finally out of the spray nozzles (6), the high-pressure liquid is driven by the spiral blades (7) to rotate the disc (5) and cause the multiple spray nozzles (6) to rotate and spray. The water flow sprayed from the spray nozzles (6) impacts the multiple inclined wing plates (9) and causes them to rotate. The rotating wing plates (9) disperse the water flow and finally achieve uniform liquid spraying.

2. The gas-solid multiphase catalytic sulfidation reaction spray structure according to claim 1, characterized in that, The disc (5) has a cylindrical shell (10) with its opening facing downwards in the middle. The rotating shaft (8) is installed inside the cylindrical shell (10) via a bearing. The inner edge of the spiral blade (7) is fixed on the outer surface of the cylindrical shell (10). The outer edge of the spiral blade (7) is fitted with a clearance between it and the inner wall of the vertical cylinder.

3. The gas-solid multiphase catalytic sulfidation reaction spray structure according to claim 1, characterized in that, The jet nozzle (6) protrudes downward to form a cone shape.

4. A gas-solid multiphase catalytic sulfidation reaction spray structure according to any one of claims 1 to 3, characterized in that, The wing plate (9) is provided with multiple spikes on the edge away from the pivot (8) and is serrated.

5. A gas-solid multiphase catalytic sulfidation reaction spray structure according to any one of claims 1 to 3, characterized in that, Spray units are provided at the lower end of the water inlet pipe (2) and the lower end of the connecting pipe (3).

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