Bed structure for a molecular sieve adsorber

Abstract

The utility model relates to air purification technical field, concretely relates to a bed layer structure of molecular sieve adsorber, including cylinder, air inlet and gas outlet, install air inlet and gas outlet on the cylinder, the inside interval installation of cylinder has three grating: through the composition setting of grating, activated alumina layer and molecular sieve layer, can form double -deck structure, through activated alumina layer can have greater adsorption capacity to the air with higher water content, and the adsorption heat of moisture is smaller, and further help the adsorption of molecular sieve layer to carbon dioxide, secondly compared with single -deck structure, this structure makes the drying degree of air can reach lower dew point temperature, the carbon dioxide content after purification is lower, also effectively prolongs the working time, and activated alumina layer particle is bigger, and the mechanical strength is high, and the powdering is not easy, can reduce the powdering of molecular sieve layer, and further prolong the service life of molecular sieve layer.

Description

Technical Field

[0001] This utility model belongs to the field of air purification technology, specifically relating to a bed structure of a molecular sieve adsorber. Background Technology

[0002] In air separation units, the molecular sieve purification system is a front-end purification system, and its purification performance directly impacts the operational safety of the air separation unit. Currently, high-efficiency molecular sieves are mostly used to modify the adsorption bed, which can improve the stability and reliability of air separation unit operation. With the increasing frequency of using high-efficiency molecular sieves, improvements to the bed structure are imperative. Traditional molecular sieve beds are mostly single-layer structures, using only one type of molecular sieve for adsorption. While this structure is simple, its adsorption efficiency is limited and it is easily affected by impurities; moreover, some are prone to molecular sieve leakage. Therefore, overcoming these technical problems and defects has become a key issue that needs to be addressed. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of traditional molecular sieve beds in the background technology, which are mostly single-layer structures, that is, only one type of molecular sieve is used for adsorption. Although this structure is simple, the adsorption efficiency is limited and it is easily affected by impurities. In addition, some of them are prone to molecular sieve leakage. Therefore, a new molecular sieve adsorber bed structure is proposed.

[0004] To achieve the above-mentioned objectives, the technical solution of this utility model is: a bed structure for a molecular sieve adsorber, comprising a cylinder, an air inlet, and an air outlet, wherein the air inlet and air outlet are installed on the cylinder, characterized in that: three grids are installed at intervals inside the cylinder, and an activated alumina layer and a molecular sieve layer are respectively filled between adjacent grids, and a wire mesh composite layer is detachably installed at the upper end of each grid.

[0005] In the bed structure of the molecular sieve adsorber described above, several stiffening plates are fixedly connected to the inner wall of the cylinder, and each grid is fixedly connected to a pin along the circumferential direction, with the pin inserted into the stiffening plate.

[0006] In the bed structure of the molecular sieve adsorber described above, the wire mesh composite layer includes a coarse wire mesh and two fine wire meshes, and the upper end of the grid is laid with a coarse wire mesh and two fine wire meshes from top to bottom.

[0007] In the bed structure of the molecular sieve adsorber described above, the wire mesh composite layer is detachably connected to the grid by bolts and nuts.

[0008] In the bed structure of the molecular sieve adsorber described above, an annular plate is connected to the edge of the wire mesh composite layer by bolts and nuts.

[0009] In the bed structure of the molecular sieve adsorber described above, the active alumina layer is located at one end of the air inlet.

[0010] In the bed structure of the molecular sieve adsorber described above, an inspection port is installed on one side of the cylinder.

[0011] Compared with the prior art, the bed structure of the molecular sieve adsorber of this invention has at least the following beneficial effects: The molecular sieve adsorber of this invention features a simple bed structure composed of a grid, an activated alumina layer, and a molecular sieve layer. This structure forms a double-bed configuration. The activated alumina layer has a large adsorption capacity for air with high moisture content and low heat of adsorption, thus facilitating the adsorption of carbon dioxide by the molecular sieve layer. Secondly, compared to a single-bed structure, this structure allows for a lower dew point temperature, resulting in lower purified carbon dioxide content and effectively extending the operating time. Furthermore, the larger activated alumina particles have high mechanical strength and are less prone to pulverization, reducing the pulverization of the molecular sieve layer and extending its service life. Additionally, the activated alumina layer, located at one end of the air inlet, also helps to evenly distribute air, further protecting the molecular sieve layer.

[0012] The bed structure of this molecular sieve adsorber features a detachable wire mesh composite layer mounted on the upper end of each grid, effectively preventing leakage of the alumina layer or molecular sieve layer. The wire mesh composite layer is connected to the grid via bolts and nuts. This detachable design allows for convenient and quick disassembly and replacement of the wire mesh composite layer when it becomes clogged or damaged after a period of operation, significantly shortening maintenance time, reducing maintenance costs, and improving the overall operating efficiency and reliability of the structure. Attached Figure Description

[0013] Figure 1 This is a partial cross-sectional schematic diagram of the bed structure of the molecular sieve adsorber of this utility model; Figure 2 yes Figure 1 A magnified view of section A in the image.

[0014] In the diagram: 1. Cylinder; 2. Grating; 201. Pin; 3. Activated alumina layer; 4. Molecular sieve layer; 5. Wire mesh composite layer; 6. Annular plate; 7. Rib plate. Detailed Implementation

[0015] The bed structure of the molecular sieve adsorber of this utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] This embodiment discloses a bed structure for a molecular sieve adsorber. By arranging a grid 2, an activated alumina layer 3, and a molecular sieve layer 4, a double-layer bed structure can be formed. The activated alumina layer 3 has a large adsorption capacity for air with high moisture content and low heat of adsorption of moisture, thus facilitating the adsorption of carbon dioxide by the molecular sieve layer 4. Secondly, compared to a single-layer bed structure, this structure allows for a lower dew point temperature, resulting in lower purified carbon dioxide content and effectively extending the operating time. Furthermore, the activated alumina layer 3 has larger particles, higher mechanical strength, and is less prone to pulverization, reducing the pulverization of the molecular sieve layer 4 and extending its service life. (Refer to...) Figures 1-2 It mainly includes a cylinder 1, an air inlet, and an air outlet. The air inlet and air outlet are installed on the cylinder 1. The cylinder 1 is characterized by having three grids 2 installed at intervals inside. The spaces between adjacent grids 2 are filled with an activated alumina layer 3 and a molecular sieve layer 4, respectively. A wire mesh composite layer 5 is detachably installed at the upper end of each grid 2. The wire mesh composite layer 5 effectively prevents the alumina layer or molecular sieve layer 4 from leaking out. This detachable design allows for easy and quick disassembly and replacement when the wire mesh composite layer 5 becomes clogged or damaged after the structure has been in operation for a period of time. This greatly shortens the structure maintenance time, reduces maintenance costs, and improves the overall operating efficiency and reliability of the structure.

[0018] In this embodiment, refer to Figure 1 and Figure 2 A number of stiffening plates 7 are fixedly connected to the inner wall of the cylinder 1, and each grid 2 is fixedly connected to a pin 201 along the circumferential direction. The pin 201 is inserted into the stiffening plate 7. Through the cooperative design of the stiffening plate 7 and the pin 201, the grid 2 can be installed inside the cylinder 1, which facilitates the use of the grid 2.

[0019] In this embodiment, refer to Figure 1 and Figure 2 The wire mesh composite layer 5 includes a coarse wire mesh and two fine wire meshes. The upper end of the grid 2 is laid with a coarse wire mesh and two fine wire meshes from top to bottom. Through the combined design of the coarse wire mesh and the two fine wire meshes, the problem of leakage of the alumina layer or molecular sieve layer 4 during the use of this structure is effectively solved.

[0020] In this embodiment, refer to Figure 1 and Figure 2 The wire mesh composite layer 5 is detachably connected to the grid 2 by bolts and nuts, which facilitates the disassembly of the wire mesh composite layer 5 and thus facilitates its maintenance or replacement.

[0021] In this embodiment, refer to Figure 1 and Figure 2 The edge of the wire mesh composite layer 5 is connected to an annular plate 6 by bolts and nuts, which can improve the overall structural strength of the wire mesh composite layer 5.

[0022] In this embodiment, refer to Figure 1 The active alumina layer 3 is located at one end of the air inlet; it can play a role in uniformly distributing air and further protect the molecular sieve layer 4.

[0023] In this embodiment, an inspection port is installed on one side of the cylinder 1 to facilitate the inspection of the inside of the cylinder 1.

[0024] The working principle of the bed structure of the molecular sieve adsorber of this utility model is as follows: When purifying air, air enters the cylinder 1 from the air inlet, and then passes through the activated alumina layer 3 and the molecular sieve layer 4 in sequence to adsorb the substances in the air, thereby purifying the air. The purified air flows out from the air outlet. During the purification process, the activated alumina layer 3 has a large adsorption capacity for air with high moisture content and low heat of adsorption of moisture, which helps the molecular sieve layer 4 to adsorb carbon dioxide.

[0025] It should be noted that, in actual implementation, the structure depicted in the accompanying drawings is not a fixed or unchanging embodiment. The components of the embodiments of this invention described and shown in these drawings can typically be arranged and designed in various different configurations. Furthermore, the accompanying drawings and abstract drawings are merely illustrative and do not represent the specific structure or actual quantity in a concrete implementation.

[0026] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation on quantity. Terms such as "comprising" or "including" mean that the element or component preceding the word encompasses the element or component listed following the word and its equivalents, without excluding other elements or components. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0027] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed by the present invention without exceeding the protection scope of the present invention.

Claims

1. A bed structure for a molecular sieve adsorber, comprising a cylindrical body (1), an inlet, and an outlet, wherein the inlet and outlet are mounted on the cylindrical body (1), characterized in that: The cylinder (1) is equipped with three grids (2) at intervals inside; An active alumina layer (3) and a molecular sieve layer (4) are respectively filled between adjacent grids (2); Each of the grids (2) has a detachable wire mesh composite layer (5) installed at its upper end.

2. The bed structure of the molecular sieve adsorber according to claim 1, characterized in that: Several stiffening plates (7) are fixedly connected to the inner wall of the cylinder (1), and each grid (2) is fixedly connected with a pin (201) along the circumferential direction. The pin (201) is inserted into the stiffening plate (7).

3. The bed structure of the molecular sieve adsorber according to claim 1, characterized in that: The wire mesh composite layer (5) includes a coarse wire mesh and two fine wire meshes. The upper end of the grid (2) is covered with a coarse wire mesh and two fine wire meshes from top to bottom.

4. The bed structure of the molecular sieve adsorber according to claim 3, characterized in that: The wire mesh composite layer (5) is detachably connected to the grid (2) by bolts and nuts.

5. The bed structure of the molecular sieve adsorber according to claim 4, characterized in that: An annular plate (6) is connected to the edge of the wire mesh composite layer (5) by bolts and nuts.

6. The bed structure of the molecular sieve adsorber according to claim 1, characterized in that: The active alumina layer (3) is located at one end of the air inlet.

7. The bed structure of the molecular sieve adsorber according to claim 1, characterized in that: An inspection port is installed on one side of the cylinder (1).

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