III-type iodine adsorber

Abstract

The utility model discloses an III-type iodine adsorber, which comprises a shell and an adsorption module, the shell is provided with a ventilation chamber, the adsorption module is positioned in the ventilation chamber, the ventilation chamber is divided into an air inlet chamber and an air outlet chamber by the adsorption module, the adsorption module comprises a plurality of adsorption beds which are sequentially connected end to end, and among three adjacent adsorption beds, the air inlet chamber is communicated with the air inlet chamber. Wherein an air inlet groove with an opening facing the air inlet chamber is formed between every two adjacent adsorption beds, an air outlet groove with an opening facing the air outlet chamber is formed between the other two adjacent adsorption beds, and the circulation sectional area of the air inlet grooves is gradually reduced from the air inlet chamber to the air outlet chamber. The circulation cross section area of the air outlet groove is gradually increased from the air inlet chamber to the air outlet chamber, so that the air flow distribution is optimized, the adsorption efficiency is improved, and the replacement period of the adsorbent is prolonged. The nuclear air purifier is suitable for the technical field of nuclear air purification.

Description

Technical Field

[0001] This utility model relates to the technical field of nuclear air purification, specifically a type III iodine adsorber. Background Technology

[0002] The Type III iodine adsorber is an integrally assembled adsorber, mainly used to capture radioactive iodine in the air to reduce the emission level of gaseous radioactive materials and ensure environmental safety and habitability.

[0003] The adsorber consists of one or more adsorption beds. The size of the adsorption beds is determined according to the flow rate of the air or gas being treated. They are assembled by welding perforated mesh plates and structural components to form airflow channels. The airflow enters from the windward side of the adsorption bed, passes through the filled adsorbent, and then flows out from the outlet side. The structural design of the adsorption bed is crucial to maintaining the high-efficiency adsorption performance of the Type III iodine adsorber.

[0004] However, in existing technologies, the adsorption bed of a Type III iodine adsorber is typically arranged parallel to the airflow direction. This arrangement can cause changes in the velocity and direction of the airflow as it passes through the adsorption bed due to structural characteristics, thus affecting the uniform distribution of the airflow. This uneven airflow distribution may reduce adsorption efficiency and shorten the adsorbent replacement cycle. Therefore, there is a need to develop an improved Type III iodine adsorber to optimize airflow distribution, improve adsorption efficiency, and extend the adsorbent replacement cycle. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention provides a Type III iodine adsorber to achieve a more uniform airflow distribution, improve adsorption efficiency, and reduce operating costs.

[0006] A type III iodine adsorber according to a first aspect of the present invention includes:

[0007] The outer shell has a ventilation chamber;

[0008] An adsorption module, located within the ventilation chamber, divides the ventilation chamber into an air inlet chamber and an air outlet chamber. The adsorption module includes multiple adsorption beds connected end-to-end in sequence. Among three adjacent adsorption beds, an air inlet groove with an opening facing the air inlet chamber is formed between two adjacent adsorption beds, and an air outlet groove with an opening facing the air outlet chamber is formed between two adjacent adsorption beds. The flow cross-sectional area of ​​the air inlet groove gradually decreases from the air inlet chamber to the air outlet chamber, and the flow cross-sectional area of ​​the air outlet groove gradually increases from the air inlet chamber to the air outlet chamber.

[0009] According to an embodiment of the present invention, a type III iodine adsorber has at least the following beneficial effects:

[0010] This invention alters the airflow direction by forming air inlet slots that gradually decrease in size from the air inlet chamber to the air outlet chamber, or air outlet slots that gradually increase in size from the air inlet chamber to the air outlet chamber, between adjacent adsorption beds. This results in a more uniform airflow velocity within the air inlet and air outlet slots, more thorough and uniform contact between the airflow and the adsorption bed, improved adsorption efficiency of the adsorbent, reduced dead zones, and enhanced adsorption efficiency for radioactive iodine.

[0011] According to some embodiments of the present invention, the ventilation chamber is provided with a first direction, the first direction being from the air inlet chamber to the air outlet chamber, the air inlet groove extending along the first direction, and the air outlet groove extending away from the first direction.

[0012] According to some embodiments of the present invention, a plurality of adsorption beds are arranged perpendicular to the first direction.

[0013] According to some embodiments of the present invention, in three adjacent adsorption beds, two adjacent adsorption beds are symmetrically arranged about the first direction and their extension directions intersect at the air inlet chamber, and two other adjacent adsorption beds are symmetrically arranged about the first direction and their extension directions intersect at the air outlet chamber.

[0014] According to some embodiments of the present invention, two adjacent adsorption beds are arranged at relative intervals, the interval between two adjacent adsorption beds is consistent, and a connecting member connects two adjacent adsorption beds.

[0015] According to some embodiments of the present invention, the connector extends perpendicular to the first direction, and the cross-sections of the air inlet slot and the air outlet slot along the first direction are both isosceles trapezoids.

[0016] According to some embodiments of this utility model, the connector is a sealing plate-like structure.

[0017] According to some embodiments of the present invention, the outer shell includes sidewalls extending along the first direction, and the adsorption beds located at the first and last ends are respectively connected to the sidewalls via the connectors.

[0018] According to some embodiments of the present invention, the adsorption bed includes a bottom plate filled with an adsorbent.

[0019] According to some embodiments of this utility model, the bottom plate is a perforated mesh structure to allow gas to flow through.

[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a schematic diagram of an embodiment of a type III iodine adsorber provided by this utility model.

[0023] Icon labels:

[0024] 100 for outer casing; 110 for air inlet chamber; 120 for air outlet chamber;

[0025] Adsorption module 200; adsorption bed 210; air inlet slot 211; air outlet slot 212; connector 220. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the 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.

[0028] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0031] The Type III iodine adsorber is an integrally assembled adsorber, mainly used to capture radioactive iodine in the air to reduce the emission level of gaseous radioactive materials and ensure environmental safety and habitability.

[0032] The adsorber consists of one or more adsorption beds. The size of the adsorption beds is determined according to the flow rate of the air or gas being treated. They are assembled by welding perforated mesh plates and structural components to form airflow channels. The airflow enters from the windward side of the adsorption bed, passes through the filled adsorbent, and then flows out from the outlet side. The structural design of the adsorption bed is crucial to maintaining the high-efficiency adsorption performance of the Type III iodine adsorber.

[0033] However, in existing technologies, the adsorption bed of a Type III iodine adsorber is typically arranged parallel to the airflow direction. This arrangement can cause changes in the velocity and direction of the airflow as it passes through the adsorption bed due to structural characteristics, thus affecting the uniform distribution of the airflow. This uneven airflow distribution may reduce adsorption efficiency and shorten the adsorbent replacement cycle. Therefore, there is a need to develop an improved Type III iodine adsorber to optimize airflow distribution, improve adsorption efficiency, and extend the adsorbent replacement cycle.

[0034] To address the aforementioned problems, this invention proposes a Type III iodine adsorber, which can effectively solve the problem of low adsorbent utilization efficiency caused by uneven airflow distribution.

[0035] refer to Figure 1 The following are embodiments of a type III iodine adsorber of this utility model:

[0036] The Type III iodine adsorber of this utility model embodiment includes a shell 100 and an adsorption module 200.

[0037] The outer casing 100 has a ventilation chamber, and the adsorption module 200 is located in the ventilation chamber. The adsorption module 200 divides the ventilation chamber into an air inlet chamber 110 and an air outlet chamber 120. For ease of description, the direction from the air inlet chamber 110 to the air outlet chamber 120 is defined as the first direction. The gas to be adsorbed enters the ventilation chamber along the first direction, flows in through the air inlet chamber 110, passes through the adsorption module 200, and flows out through the air outlet chamber 120, thereby completing the adsorption of iodine in the gas.

[0038] The adsorption module 200 includes multiple adsorption beds 210 connected end to end in sequence. Adjacent adsorption beds 210 are arranged at relative intervals and connected by connectors 220. The adsorption bed 210 includes a bottom plate filled with adsorbent. Specifically, the bottom plate is a porous mesh structure, which allows gas to flow through the adsorption bed 210 and facilitates the filling of adsorbent. The bottom plate is welded and assembled with the structural components.

[0039] Regarding the arrangement of multiple adsorption beds 210: Multiple adsorption beds 210 are arranged perpendicular to the first direction. Among three adjacent adsorption beds 210, an air inlet groove 211 with an opening facing the air inlet chamber 110 is formed between two adjacent adsorption beds 210, and an air outlet groove 212 with an opening facing the air outlet chamber 120 is formed between two adjacent adsorption beds 210.

[0040] Meanwhile, when the adsorption bed 210 is set parallel to the airflow direction, the pressure loss of the airflow inside the adsorber will be high, thus affecting the energy efficiency of the system; when the adsorption bed 210 is set perpendicular to the airflow direction, the airflow will have a greater impact on the adsorbent layer, which may lead to the risk of the activated carbon layer collapsing. Therefore, in order to improve the adsorption efficiency and safety of the equipment, the adsorption bed 210 is set at an angle to the airflow direction, rather than perpendicular or parallel to the airflow direction.

[0041] At this time, the cross-sectional area of ​​the air inlet slot 211 gradually decreases from the air inlet chamber 110 to the air outlet chamber 120, while the cross-sectional area of ​​the air outlet slot 212 gradually increases from the air inlet chamber 110 to the air outlet chamber 120. The airflow velocity through the air inlet slot 211 and the air outlet slot 212 is affected by the shape of the air inlet slot 211 and the air outlet slot 212. By changing the cross-sectional area of ​​the air inlet slot 211 and the air outlet slot 212, the airflow is concentrated in the air inlet slot 211 and the air outlet slot 212, so that the airflow velocity in the adsorption bed 210 is more uniform, reducing the airflow velocity in local areas that is too high or too low, making the adsorbent contact with the airflow more fully, improving the utilization rate of the adsorbent and reducing the dead zone area where the adsorbent is not utilized, thus enhancing the adsorption efficiency of radioactive iodine.

[0042] Furthermore, in order to improve the symmetry of the air inlet slot 211 and the air outlet slot 212 structure, so that the airflow can uniformly contact the two adjacent adsorption beds 210, among the three adjacent adsorption beds 210, two adjacent adsorption beds 210 are symmetrically arranged about the first direction and their extension directions intersect at the air inlet chamber 110, forming an angle θ; in addition, two adjacent adsorption beds 210 are symmetrically arranged about the first direction and their extension directions intersect at the air outlet chamber 120, with the same angle θ. The specific value of the angle θ can be adjusted according to the actual application scenario. The parameters affecting θ include the gas flow rate in the ventilation chamber, the size of the adsorption bed 210, and the adsorbent material.

[0043] Specifically, two adjacent adsorption beds 210 are arranged at a relative interval, and a connector 220 is connected between two adjacent adsorption beds 210, which increases the space restricted by the air inlet slot 211 and the air outlet slot 212, reducing the impact of airflow on the adsorption bed 210. In order to make the airflow distribution between each air inlet slot 211 and each air outlet slot 212 uniform and improve the adsorption efficiency of the adsorber, the interval between two adjacent adsorption beds 210 is kept consistent, and the shape and size of each air inlet slot 211 and each air outlet slot 212 are consistent.

[0044] In this embodiment, the outer shell 100 includes a sidewall extending along a first direction. The adsorption beds 210 located at the first and last ends are respectively connected to the sidewalls via connectors 220. An angle is formed between the adsorption beds 210 and the sidewalls, and the angle is θ / 2.

[0045] Specifically, the connector 220 is a sealed plate-like structure that extends perpendicular to the first direction, which is beneficial for the gas to remain in the air inlet slot 211 and the air outlet slot 212 and fully contact the adsorption bed 210, so that the cross-section of the air inlet slot 211 and the air outlet slot 212 along the first direction is an isosceles trapezoid. In some other embodiments, the connector 220 may be other structures and other connection forms. For example, the connector 220 may be an arc-shaped plate that is smoothly connected between two adjacent adsorption beds 210 and can be detached and installed through a slot to facilitate the replacement of the adsorbent.

[0046] Preferably, a sealing element is provided at the connection between the adsorption bed 210 and the connector 220 to improve air tightness, ensure that the gas to be adsorbed completely passes through the adsorption bed 210 and enters the air outlet chamber 120, thereby improving adsorption efficiency.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A type III iodine adsorber, characterized in that, include: The outer shell has a ventilation chamber; An adsorption module, located within the ventilation chamber, divides the ventilation chamber into an air inlet chamber and an air outlet chamber. The adsorption module includes multiple adsorption beds connected end-to-end in sequence. Among three adjacent adsorption beds, an air inlet groove with an opening facing the air inlet chamber is formed between two adjacent adsorption beds, and an air outlet groove with an opening facing the air outlet chamber is formed between two adjacent adsorption beds. The flow cross-sectional area of ​​the air inlet groove gradually decreases from the air inlet chamber to the air outlet chamber, and the flow cross-sectional area of ​​the air outlet groove gradually increases from the air inlet chamber to the air outlet chamber.

2. The Type III iodine adsorber according to claim 1, characterized in that: The ventilation chamber has a first direction, which extends from the air inlet chamber to the air outlet chamber. The air inlet slot extends along the first direction, and the air outlet slot extends away from the first direction.

3. The Type III iodine adsorber according to claim 2, characterized in that: The plurality of adsorption beds are arranged perpendicular to the first direction.

4. The Type III iodine adsorber according to claim 2, characterized in that: In the three adjacent adsorption beds, two adjacent adsorption beds are symmetrically arranged about the first direction and their extension directions intersect at the air inlet chamber, and two other adjacent adsorption beds are symmetrically arranged about the first direction and their extension directions intersect at the air outlet chamber.

5. The Type III iodine adsorber according to claim 4, characterized in that: The two adjacent adsorption beds are arranged at relative intervals, the interval between the two adjacent adsorption beds is the same, and the two adjacent adsorption beds are connected by a connector.

6. The Type III iodine adsorber according to claim 5, characterized in that: The connector extends perpendicular to the first direction, and the cross-sections of the air inlet slot and the air outlet slot along the first direction are both isosceles trapezoids.

7. The Type III iodine adsorber according to claim 5, characterized in that: The connector is a sealing plate-like structure.

8. The Type III iodine adsorber according to claim 5, characterized in that: The outer shell includes sidewalls extending along the first direction, and the adsorption beds located at the head and tail ends are respectively connected to the sidewalls via the connectors.

9. The Type III iodine adsorber according to claim 1, characterized in that: The adsorption bed includes a bottom plate filled with adsorbent.

10. The Type III iodine adsorber according to claim 9, characterized in that: The base plate has a perforated mesh structure to allow gas to flow through.

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