A new type of fixed bed chemical reactor internal gas distributor

Abstract

The utility model discloses a novel fixed bed chemical reactor internal gas distributor relates to porous gas distributor field, including porous gas distribution board, the top of porous gas distribution board is connected with the top plate through the positioning structure, the inside distribution of porous gas distribution board has a plurality of primary hexagonal hole, the inside distribution of top plate has a plurality of secondary hexagonal hole, the inner wall of secondary hexagonal hole is shaped and has the intercepting net of porous structure, the positioning structure includes the multiple limit hole of being set up in the inside of porous gas distribution board edge, the bottom end edge of top plate is shaped and has the limit post that projects downward. The utility model discloses through setting positioning structure, top plate, secondary hexagonal hole and intercepting net, when needing to clean, only need to dismantle top plate, need not to dismantle porous gas distribution board, and the simple, convenient of dismounting, installing process improves maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of porous gas distributors, specifically a novel gas distributor for use inside a fixed-bed reactor. Background Technology

[0002] Gas distributors are generally perforated plates, usually circular metal or ceramic plates, which can ensure that the mobile phase is in as uniform contact as possible with the catalyst phase.

[0003] In existing technologies, solid particles, impurities, or deposits in the mobile phase gradually accumulate in the pores of the porous plate, causing blockage and reducing reaction efficiency. Therefore, cleaning is required after a certain period of use. Since the porous plate is fastened by fasteners, it needs to be disassembled, which is inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a novel gas distributor for use inside a fixed-bed reactor in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel gas distributor for use inside a fixed-bed reactor, comprising a porous gas distribution plate, a top plate connected to the top of the porous gas distribution plate via a positioning structure, a plurality of first-order hexagonal holes distributed inside the porous gas distribution plate, a plurality of second-order hexagonal holes distributed inside the top plate, an intercepting mesh with a porous structure formed on the inner wall of the second-order hexagonal holes, the positioning structure comprising a plurality of limiting holes opened inside the edge of the porous gas distribution plate, and a downwardly protruding limiting post formed on the bottom edge of the top plate.

[0006] As a further embodiment of this utility model: the second hexagonal hole is aligned with the first hexagonal hole in the vertical direction, and the horizontal cross-section of the second hexagonal hole is smaller than that of the first hexagonal hole.

[0007] As a further improvement of this utility model, the interception net has a porous structure.

[0008] As a further improvement of this utility model: the outer diameter of the limiting post is smaller than the inner diameter of the limiting hole, and an annular sealing ring is fixedly installed on the inner circumference of the limiting hole.

[0009] As a further improvement of this utility model: the bottom end of the second hexagonal hole is integrally formed with a downwardly protruding hexagonal plate, and the outer wall of the hexagonal plate matches the inner wall of the first hexagonal hole.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. By setting up a positioning structure, top plate, No. 2 hexagonal holes and interception net, when cleaning is required, only the top plate needs to be disassembled, without the need to disassemble the porous gas distribution plate. The disassembly and installation process is simple and convenient, improving maintenance efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is another perspective on the structural entity of this utility model;

[0014] Figure 3 This is a schematic diagram showing the connection between the hexagonal plate and the first hexagonal hole of this utility model.

[0015] In the diagram: 1. Porous gas distribution plate; 2. Top plate; 3. Hexagonal hole No. 1; 4. Hexagonal hole No. 2; 5. Limiting hole; 6. Limiting post; 7. Interception net. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-3 In this embodiment of the present invention, a novel gas distributor for use inside a fixed-bed reactor includes a porous gas distribution plate 1. The top of the porous gas distribution plate 1 is connected to a top plate 2 via a positioning structure. The interior of the porous gas distribution plate 1 has multiple first-order hexagonal holes 3, and the interior of the top plate 2 has multiple second-order hexagonal holes 4. The inner wall of the second-order hexagonal holes 4 is formed with a porous intercepting mesh 7. The positioning structure includes multiple limiting holes 5 opened inside the edge of the porous gas distribution plate 1, and the bottom edge of the top plate 2 is formed with a downwardly protruding limiting post 6.

[0018] In this embodiment: after the mobile phase enters, the mobile phase flows downward through the top plate 2 and the second hexagonal hole 4 and the first hexagonal hole 3 inside the porous gas distribution plate 1 to contact the catalyst (i.e., the fixed bed). This method can improve the uniform contact between the mobile phase and the catalyst. During the flow of the mobile phase, the impurities contained in it or the crystallization, polymerization, precipitation and other products of the mobile phase are intercepted by the interception net 7. Therefore, when cleaning regularly, it is not necessary to disassemble the porous gas distribution plate 1. Only the top plate 2 needs to be removed. The removed top plate 2 drives the interception net 7 to move synchronously, and the substances intercepted by the interception net 7 can be carried out synchronously.

[0019] During the installation or removal of the top plate 2, by pulling the top plate 2, the top plate 2 drives the limiting post 6 to move synchronously until the limiting post 6 separates from the limiting hole 5, thus completing the removal;

[0020] During installation, by aligning the limiting post 6 with the limiting hole 5, the first hexagonal hole 3 and the second hexagonal hole 4 can be aligned vertically.

[0021] Please refer to this carefully. Figure 3 The second hexagonal hole 4 and the first hexagonal hole 3 are aligned vertically, and the cross-section of the second hexagonal hole 4 is smaller than that of the first hexagonal hole 3. The bottom end of the second hexagonal hole 4 is integrally formed with a downward protruding hexagonal plate, and the outer wall of the hexagonal plate matches the inner wall of the first hexagonal hole 3.

[0022] In this embodiment: when the top plate 2 is placed on the top of the porous gas distribution plate 1, and during the process of the two gradually connecting, the outer wall of the hexagonal plate is inserted into the inner wall of the first hexagonal hole 3. Therefore, during use, impurities can be prevented from getting stuck inside the first hexagonal hole 3.

[0023] Please refer to this carefully. Figure 3 The interceptor net 7 has a porous structure.

[0024] In this embodiment, the design of the interception net 7 can intercept impurities in the mobile phase, avoiding blockages that are difficult to clean.

[0025] Please refer to this carefully. Figure 2 The outer diameter of the limiting post 6 is smaller than the inner diameter of the limiting hole 5, and an annular sealing ring is fixedly installed on the inner circumference of the limiting hole 5.

[0026] In this embodiment: during the process of inserting the limiting post 6 into the limiting hole 5, the annular sealing ring is deformed by force, sealing the gap between the limiting post 6 and the limiting hole 5. At the same time, the deformed annular sealing ring will generate a reverse force, exerting a reverse force on the limiting post 6, thereby improving the connection force after the limiting post 6 is installed.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel gas distributor for use inside a fixed-bed reactor, comprising a porous gas distribution plate (1), characterized in that, The top of the porous gas distribution plate (1) is connected to a top plate (2) via a positioning structure. The interior of the porous gas distribution plate (1) has multiple first-order hexagonal holes (3), and the interior of the top plate (2) has multiple second-order hexagonal holes (4). The inner wall of the second-order hexagonal holes (4) is formed with a porous intercepting mesh (7). The positioning structure includes multiple limiting holes (5) opened inside the edge of the porous gas distribution plate (1). The bottom edge of the top plate (2) is formed with a downwardly protruding limiting post (6).

2. The novel gas distributor for use inside a fixed-bed reactor according to claim 1, characterized in that, The second hexagonal hole (4) is aligned with the first hexagonal hole (3) in the vertical direction, and the horizontal cross section of the second hexagonal hole (4) is smaller than the horizontal cross section of the first hexagonal hole (3).

3. A novel gas distributor for use inside a fixed-bed reactor according to claim 2, characterized in that, The interception net (7) has a porous structure.

4. A novel gas distributor for use inside a fixed-bed reactor according to claim 3, characterized in that, The outer diameter of the limiting post (6) is smaller than the inner diameter of the limiting hole (5), and an annular sealing ring is fixedly installed on the inner circumference of the limiting hole (5).

5. A novel gas distributor for use inside a fixed-bed reactor according to claim 4, characterized in that, The bottom end of the second hexagonal hole (4) is integrally formed with a downward protruding hexagonal plate, and the outer wall of the hexagonal plate matches the inner wall of the first hexagonal hole (3).

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