Multi-layer compression-resistant molecular sieve catalytic reaction cavity

Abstract

The utility model mainly relates to the technical field of molecular sieves, in particular to a multilayer compression-resistant molecular sieve catalytic reaction cavity which comprises a reaction tower, and an air inlet pipe and an air outlet pipe which are respectively communicated with the top and the bottom of the reaction tower, a plurality of mounting frames which are arranged at equal intervals in the vertical direction are mounted in the cavity of the reaction tower through a first detachable connecting mechanism; a first permeable plate is integrally formed at the bottom of each mounting frame, and a second permeable plate is assembled at the top of each mounting frame through a second detachable connecting mechanism; a honeycomb-shaped reinforcing frame is arranged between the first breathable plate and the second breathable plate, the two axial ends of the reinforcing frame are in pressure-bearing fit with the first breathable plate and the second breathable plate respectively, and honeycomb holes of the reinforcing frame are filled with molecular sieve particles. The reinforcing frame is in a honeycomb shape, the overall structural strength is improved, the service life of the device in a high-pressure environment can be longer, and the mounting frame and the second permeable plate are detachable, so that the purpose of reducing the cost can be achieved only by replacing molecular sieve particles during maintenance.

Description

Technical Field

[0001] This utility model mainly relates to the field of molecular sieve technology, specifically to a multilayer pressure-resistant molecular sieve catalytic reaction chamber. Background Technology

[0002] As a core component in processes such as high-pressure hydrogenation and olefin separation, the structural reliability of molecular sieve catalytic reaction chambers directly impacts catalyst lifespan and maintenance costs. Current technologies use an integral welded frame to fix the molecular sieve layer, resulting in poor axial compressive strength. Prolonged operation under pressures exceeding 1.8 MPa leads to sieve bed deformation, thus shortening service life. Furthermore, replacing the entire sieve requires complete replacement, resulting in high maintenance costs. Therefore, there is an urgent need to develop molecular sieve reaction chamber structures that combine multi-layered pressure resistance with rapid sieve replacement capabilities. Utility Model Content

[0003] 1. The technical problem to be solved by the utility model:

[0004] This invention provides a multilayer pressure-resistant molecular sieve catalytic reaction chamber to solve the technical problems existing in the background art.

[0005] 2. Technical Solution:

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: a multi-layer pressure-resistant molecular sieve catalytic reaction chamber, including a reaction tower, and an inlet pipe and an outlet pipe respectively connected to the top and bottom of the tower. Multiple mounting frames arranged at equal intervals in the vertical direction are installed in the chamber of the reaction tower through a first detachable connection mechanism.

[0007] Each of the mounting frames has a first ventilated plate integrally formed at the bottom and a second ventilated plate assembled at the top via a second detachable connecting mechanism;

[0008] A honeycomb-shaped reinforcing frame is provided between the first and second breathable plates. The two ends of the reinforcing frame form a pressure-bearing fit with the first and second breathable plates respectively, and the honeycomb pores are filled with molecular sieve particles.

[0009] Furthermore, the molecular sieve particles filling the honeycomb pores of the reinforcing frame, distributed from top to bottom, gradually reduce in pore size.

[0010] Furthermore, the first detachable connection mechanism includes:

[0011] The mounting plates, fixed to both sides of the mounting frame, are sandwiched between the bottom plate and the top plate on the inner wall of the reaction tower cavity.

[0012] A clamping plate is provided between the mounting plate and the top plate. The top center of the clamping plate is provided with a threaded sleeve that is threaded to a lead screw that is rotatably mounted on the top plate, and guide rods are provided on both sides that are slidably engaged with the top plate.

[0013] Furthermore, a limiting post is fixedly installed at the bottom of the clamping plate. The limiting post is coaxial with the threaded sleeve and is inserted into the limiting groove opened at the top of the mounting plate.

[0014] Furthermore, the second detachable connection mechanism includes guide plates fixedly disposed on both sides of the second vent plate, and the surface of the guide plates is provided with an array of first pin holes.

[0015] The guide plate is inserted into the slide rail groove opened in the mounting frame, and the side wall of the slide rail groove is provided with a second pin hole that matches the first pin hole.

[0016] The first pin hole and the second pin hole form a locking fit through the insertion of a pin rod.

[0017] Furthermore, a flow guiding mechanism is provided between the air inlet pipe and the uppermost second vent plate. The flow guiding mechanism includes a fixed plate that fits against the inner wall of the reaction tower cavity. A groove communicating with the air inlet pipe is opened on the top of the plate. The opening size of the groove increases from top to bottom. An array of through slots is provided at the bottom of the groove, so that the bottom of the fixed plate forms a vent grid structure.

[0018] Furthermore, an operating window is fitted on the outside of the cavity of the reaction tower.

[0019] 3. Beneficial effects:

[0020] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: the molecular sieve particles filled in the honeycomb holes of the reinforcing frame distributed from top to bottom gradually reduce the pore size, which can avoid large molecules from clogging the small pore layer too early and improve the overall adsorption efficiency.

[0021] The reinforcing frame is honeycomb-shaped, which increases the overall structural strength and extends its service life in high-pressure environments. Furthermore, the mounting frame and the second permeable plate are detachable, so maintenance can be performed by replacing only the molecular sieve particles, thereby reducing costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the reaction tower of this utility model;

[0024] Figure 3 This is an exploded view of the internal structure of the mounting frame of this utility model;

[0025] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0026] Figure 5 This is an exploded view of the first detachable connecting mechanism of this utility model;

[0027] Figure 6 This is a schematic diagram of the flow guiding mechanism of this utility model.

[0028] Figure label:

[0029] 1. Reaction tower; 2. Inlet pipe; 3. Outlet pipe; 4. Mounting frame; 5. First detachable connection mechanism; 51. Mounting plate; 52. Base plate; 53. Clamping plate; 54. Threaded sleeve; 55. Guide rod; 56. Top plate; 57. Screw rod; 58. Limiting post; 59. Limiting groove; 6. First venting plate; 7. Second detachable connection mechanism; 71. Guide plate; 72. First pin hole; 73. Slide rail groove; 74. Second pin hole; 75. Pin rod; 8. Second venting plate; 9. Reinforcing frame; 10. Flow guiding mechanism; 101. Fixing plate; 102. Groove; 103. Through groove; 11. Operation window. Detailed Implementation

[0030] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0034] See attached document Figure 1-6 A multilayer pressure-resistant molecular sieve catalytic reaction chamber includes a reaction tower 1, and an inlet pipe 2 and an outlet pipe 3 respectively connected to the top and bottom of the tower. Multiple mounting frames 4 are installed in the chamber of the reaction tower 1 at equal intervals along the vertical direction through a first detachable connection mechanism 5.

[0035] Each of the mounting frames 4 has a first ventilated plate 6 integrally formed at the bottom and a second ventilated plate 8 assembled at the top via a second detachable connecting mechanism 7.

[0036] A honeycomb-shaped reinforcing frame 9 is provided between the first breathable plate 6 and the second breathable plate 8. The two ends of the reinforcing frame 9 form a pressure-bearing fit with the first breathable plate 6 and the second breathable plate 8 respectively, and the honeycomb holes are filled with molecular sieve particles.

[0037] In this embodiment, after the gas enters the cavity of the reaction tower 1 through the inlet pipe 2, it passes through the second permeable plate 8, and then is filtered by the molecular sieve particles in the reinforcing frame 9. Finally, it is discharged from the first permeable plate 6. The above structure includes multiple layers, so it is filtered multiple times before being discharged from the outlet pipe 3, which improves the filtration effect. Since the reinforcing frame 9 is honeycomb-shaped, the overall structural strength is increased, which can make it have a longer service life in high-pressure environments. Furthermore, the mounting frame 4 and the second permeable plate 8 are detachable, so only the molecular sieve particles need to be replaced during maintenance to reduce costs.

[0038] In the above embodiments, the molecular sieve particles filled in the honeycomb pores of the reinforcing frame 9 distributed from top to bottom have progressively smaller pore sizes, arranged in a gradient from large to small pore size. Each layer can selectively adsorb molecules of different sizes. The front layer preferentially captures larger molecules or impurities, while the back layer processes smaller target molecules, avoiding premature blockage of small pore layers by large molecules and improving the overall adsorption efficiency.

[0039] The first detachable connection mechanism 5 includes:

[0040] The mounting plates 51, which are fixed to both sides of the mounting frame 4, are sandwiched between the bottom plate 52 and the top plate 56 on the inner wall of the reaction tower 1 cavity.

[0041] A clamping plate 53 is provided between the mounting plate 51 and the top plate 56. The top center of the clamping plate 53 is provided with a threaded sleeve 54 that is threadedly engaged with the lead screw 57 rotatably mounted on the top plate 56, and guide rods 55 that are slidably engaged with the top plate 56 are provided on both sides.

[0042] The bottom of the clamping plate 53 is fixedly installed with a limiting post 58. The limiting post 58 is coaxial with the threaded sleeve 54 and is inserted into the limiting groove 59 opened on the top of the mounting plate 51.

[0043] In this embodiment, the mounting frame 4 is placed inside the reaction tower 1, and the mounting plate 51 is placed on top of the base plate 52. Then, the drive screw 57 rotates in the threaded sleeve 54, and with the sliding engagement of the guide rod 55 and the top plate 56, the clamping plate 53 is driven to descend until its bottom is tightly pressed against the top of the mounting plate 51. At the same time, the limiting post 58 is inserted into the limiting groove 59, so that the mounting frame 4 can be installed inside the reaction tower 1 and can be disassembled at the same time.

[0044] The second detachable connection mechanism 7 includes guide plate 71 fixedly disposed on both sides of the second vent plate 8, and the surface of the guide plate 71 is provided with arrayed first pin holes 72.

[0045] The guide plate 71 is inserted into the slide rail groove 73 opened in the mounting frame 4, and the side wall of the slide rail groove 73 is provided with a second pin hole 74 that corresponds to and matches the first pin hole 72.

[0046] The first pin hole 72 and the second pin hole 74 are locked together by inserting a pin 75.

[0047] In this embodiment, after the guide plate 71 is inserted into the slide rail groove 73, the first pin hole 72 will be aligned with the corresponding matching second pin hole 74. At this time, the pin rod 75 is inserted into the aligned first pin hole 72 and second pin hole 74 to complete the installation of the second vent plate 8. Similarly, disassembly can be achieved.

[0048] A flow guiding mechanism 10 is provided between the air inlet pipe 2 and the uppermost second vent plate 8. The flow guiding mechanism 10 includes a fixed plate 101 that fits against the inner wall of the reaction tower 1 cavity. A groove 102 communicating with the air inlet pipe 2 is opened on the top of the plate 101. The opening size of the groove 102 increases from top to bottom. An array of through slots 103 is provided at the bottom of the groove 102, so that the bottom of the fixed plate 101 forms a venting grid structure.

[0049] In this embodiment, after the gas enters the cavity of the reaction tower 1 through the inlet pipe 2, it will first enter the groove 102. The opening size of the groove 102 increases from top to bottom, so the gas can diffuse. In addition, the bottom of the fixing plate 101 is composed of an array of through slots 103 to form a permeable grid structure, which makes the gas more evenly distributed in the cavity of the reaction tower 1.

[0050] Finally, an operation window 11 is installed on the outside of the cavity of reaction tower 1 to facilitate the assembly and disassembly of the mounting frame 4. The specific installation structure of the operation window 11 is common knowledge and will not be described in detail here.

[0051] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0052] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art.

Claims

1. A multilayer compression-resistant molecular sieve catalytic reaction cavity, comprising a reaction tower (1), and an air inlet pipe (2) and an air outlet pipe (3) respectively arranged at the top and bottom of the reaction tower (1), characterized in that: a plurality of mounting frames (4) arranged at equal intervals in the vertical direction are mounted in the cavity of the reaction tower (1) through a first detachable connecting mechanism (5); a first air-permeable plate (6) is integrally formed at the bottom of each mounting frame (4), and a second air-permeable plate (8) is assembled at the top of each mounting frame (4) through a second detachable connecting mechanism (7); a honeycomb-shaped reinforcing frame (9) is arranged between the first air-permeable plate (6) and the second air-permeable plate (8), the reinforcing frame (9) is in pressure-bearing cooperation with the first air-permeable plate (6) and the second air-permeable plate (8) at the two axial ends thereof, and molecular sieve particles are filled in the honeycomb holes of the reinforcing frame (9). The filter pore diameters of the molecular sieve particles filled in the honeycomb holes of the reinforcing frames (9) distributed from top to bottom gradually decrease. The first detachable connecting mechanism (5) comprises: mounting plates (51) fixed to both sides of the mounting frame (4), which are clamped between a bottom plate (52) and a top plate (56) of the inner wall of the cavity of the reaction tower (1); a clamping plate (53) arranged between the mounting plate (51) and the top plate (56), the clamping plate (53) being provided with a threaded sleeve (54) at the top center thereof in threaded cooperation with a screw rod (57) rotatably mounted on the top plate (56), and being provided with guide sliding rods (55) in sliding cooperation with the top plate (56) at both sides thereof. A limiting column (58) is fixedly mounted at the bottom of the clamping plate (53), the limiting column (58) is coaxial with the threaded sleeve (54), and is in plug-in cooperation with a limiting groove (59) opened at the top of the mounting plate (51).

2. The multi-layered pressure-resistant molecular sieve catalytic reaction cavity according to claim 1, characterized in that: The second detachable connecting mechanism (7) comprises guide sliding plates (71) fixedly arranged at both sides of the second air-permeable plate (8), the surfaces of the guide sliding plates (71) being provided with an array of first pin holes (72); 3. The multi-layered pressure-resistant molecular sieve catalytic reaction cavity according to claim 1, characterized in that: The guide sliding plates (71) are plugged into sliding rail grooves (73) opened in the mounting frame (4), and the side walls of the sliding rail grooves (73) are provided with second pin holes (74) corresponding to the first pin holes (72); The first pin holes (72) and the second pin holes (74) are in locking cooperation through plug-in pin rods (75). A flow guide mechanism (10) is arranged between the air inlet pipe (2) and the uppermost second air-permeable plate (8), the flow guide mechanism (10) comprising a fixed plate (101) abutting the inner wall of the cavity of the reaction tower (1), the top of the fixed plate (101) being provided with a recess (102) in communication with the air inlet pipe (2), the opening size of the recess (102) increasing from top to bottom, and the bottom of the recess (102) being provided with an array of through grooves (103) so that the bottom of the fixed plate (101) forms an air-permeable grid structure.

4. The multi-layered pressure-resistant molecular sieve catalytic reaction cavity according to claim 3, characterized in that: An operation window (11) is assembled on the outside of the cavity of the reaction tower (1).

5. The multi-layered pressure-resistant molecular sieve catalytic reaction cavity according to claim 1, characterized in that: ​ ​ ​ 6. The multi-layered pressure-resistant molecular sieve catalytic reaction cavity according to claim 1, characterized in that: ​ 7. The multi-layered pressure-resistant molecular sieve catalytic reaction cavity according to claim 1, wherein: ​

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