Vertical radial flow adsorber

Abstract

The utility model discloses a vertical radial flow adsorber, and particularly relates to the technical field of gas adsorbers, which comprises a tank body, a lower seal head is arranged at the bottom of the tank body, a gas inlet pipe is arranged at the bottom of the lower seal head, an adsorption mechanism is arranged in the tank body, and the adsorption mechanism comprises an external cylindrical screen arranged in the tank body, an outer cylindrical screen is arranged on the lower end socket, a middle cylindrical screen is arranged on one side of the outer cylindrical screen, an inner cylindrical screen is arranged on one side of the middle cylindrical screen, the bottom of the outer cylindrical screen, the bottom of the middle cylindrical screen and the bottom of the inner cylindrical screen are fixedly connected with the lower end socket, and an outer adsorption layer is arranged between the outer cylindrical screen and the middle cylindrical screen. According to the utility model, the utilization rate of adsorbents can be improved, the structure and layout of the adsorption layers are optimized, airflow can uniformly pass through a plurality of adsorbent layers, and the adsorption capacity of the adsorbent layers on target gas is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas adsorbers, and more specifically, to a vertical radial flow adsorber. Background Art

[0002] At present, industrial gases are mainly obtained by air separation. Compared with other air purification equipment such as traditional vertical axial flow adsorbers and horizontal vertical flow adsorbers, vertical radial flow adsorbers have many advantages such as small footprint, small bed pressure drop, and low regeneration energy consumption, so they are more suitable for large-scale air separation fields.

[0003] Generally, the way to increase the air handling capacity of a vertical radial flow adsorber is mainly by increasing the volume of the adsorber, that is, increasing the diameter and height of the adsorber. This changes the diameters of the inner and outer flow channels, and requires redesigning other parameters of the adsorber to make the fluid evenly distributed again, resulting in a more uneven radial flow distribution in the adsorber and a decrease in the utilization rate of the adsorbent.

[0004] After searching, a Chinese patent with publication number CN107413122A discloses a vertical radial flow adsorber. The device has a simple structure and occupies a small area. By suspending three layers of concentric cylindrical screens in the tank body, a first adsorption bed and a second adsorption bed are formed. The air to be treated enters the tank body from the air inlet pipe, and passes through the outer cylindrical screen, the first adsorption bed, the middle cylindrical screen, the second adsorption bed, the inner cylindrical screen, the porous hollow cylinder, and the exhaust pipe in sequence to be discharged from the tank body, thereby increasing the processing flow rate and improving the purity of the exhausted gas. The device is particularly suitable for use as a component of air separation equipment in the field of cryogenic technology.

[0005] However, in actual use of this structure, the air passes through multiple layers of adsorption beds and cylindrical screens to improve the purity of the gas. However, when the flow direction of the air in the pipeline remains unchanged, the length of the pipeline is short and the air flow cross-sectional area is large, the air flow distribution becomes more uneven, thus affecting the use effect. Utility Model Content

[0006] In order to overcome the above defects of the prior art, the utility model provides a vertical radial flow adsorber to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A vertical radial flow adsorber comprises a tank body, a lower head is arranged at the bottom of the tank body, an air inlet pipe is arranged at the bottom of the lower head, and an adsorption mechanism is arranged inside the tank body;

[0009] The adsorption mechanism includes an external cylindrical screen arranged inside the tank body, a middle cylindrical screen is arranged on one side of the external cylindrical screen, an internal cylindrical screen is arranged on one side of the middle cylindrical screen, the bottoms of the external cylindrical screen, the middle cylindrical screen and the internal cylindrical screen are all fixedly connected to the lower head, an outer adsorption layer is arranged between the external cylindrical screen and the middle cylindrical screen, an inner adsorption layer is arranged between the middle cylindrical screen and the internal cylindrical screen, an exhaust pipe is arranged on one side of the internal cylindrical screen, and a central flow channel is arranged inside the exhaust pipe.

[0010] By adopting the above technical solution: in order to improve the utilization rate of the adsorbent, the structure and layout of the adsorption layer are optimized, so that the airflow can pass through multiple adsorbent layers evenly, thereby improving its adsorption capacity for the target gas.

[0011] As a further description of the above technical solution: multiple partitions are arranged inside the outer cylindrical screen, the middle cylindrical screen and the inner cylindrical screen, and the third adsorption layer, the second adsorption layer and the first adsorption layer are respectively arranged on the top of the multiple partitions, the third adsorption layer is arranged at the bottom of the second adsorption layer, and the first adsorption layer is arranged at the bottom of the second adsorption layer, and the diameters of the adsorbed particles in the third adsorption layer, the second adsorption layer and the first adsorption layer gradually decrease from bottom to top.

[0012] By adopting the above technical solution: the adsorption area is designed as multi-layer adsorption, and each layer of adsorption adopts a radial flow method to ensure that the fluid flows evenly through the adsorbent layer, thereby improving the use effect.

[0013] As a further description of the above technical solution: a diversion channel is formed between the external cylindrical screen and the side wall of the tank body, an external channel is arranged between the internal cylindrical screen and the exhaust pipe, a first feed pipe is arranged on the top of the tank body, a second feed pipe is arranged on one side of the first feed pipe, solenoid valves are arranged on the top of the first feed pipe and the second feed pipe, a visual window is opened on the surface of the tank body, and tempered glass is arranged inside the visual window.

[0014] By adopting the above technical solution: in order to facilitate the loading and unloading of materials, reduce the air flow resistance, ensure that the adsorbed gas can be discharged smoothly, and the visual design is easy to operate and monitor.

[0015] Technical effects and advantages of the utility model:

[0016] 1. By setting up the adsorption mechanism, compared with the prior art, the air inlet pipe is designed at the bottom of the tank body, and the gas is uniformly introduced into the tank body through a reasonable pipeline and valve structure, and flows through the external cylindrical screen, the middle cylindrical screen and the internal cylindrical screen from the diversion flow channel in sequence. Since the diameter of the adsorbed particles in the adsorption layer gradually decreases from bottom to top, a cylindrical partition is set in the tank body to divide the external cylindrical screen, the middle cylindrical screen and the internal cylindrical screen into multiple areas. The design of the partition will take into account the uniform distribution of the airflow and the full utilization of the adsorbent, so as to achieve the optimal layout of the airflow and the adsorbent in the adsorption bed, and the airflow pressure drop increases in sequence, so that the velocity field and concentration field of the entire adsorption layer are more uniform;

[0017] 2. By setting up an external flow channel, an exhaust pipe, a central flow channel, tempered glass and a visual window, compared with the prior art, after adsorption by the adsorbent, the gas flows into the external flow channel, then flows into the central flow channel inside the exhaust pipe, and finally flows out of the exhaust pipe. Each layer of the third adsorption layer, the second adsorption layer and the first adsorption layer is filled with appropriate adsorbents. The type and amount of the adsorbent will be selected according to the properties and adsorption requirements of the target gas. The exhaust pipe is set on the top of the tank body. By optimizing the airflow channel and reducing the airflow resistance, it is ensured that the adsorbed gas can be discharged smoothly. The visual window of this structure is designed. By installing tempered glass, the working status of the adsorption bed can be visually observed for easy operation and monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the structure of the adsorption mechanism of the utility model.

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the tank body of the present utility model.

[0021] Figure 4 It is a schematic diagram of the top view of the tank body of the utility model.

[0022] Figure 5 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0023] The accompanying drawings are marked as follows: 1. tank body; 2. lower head; 3. air inlet pipe; 4. external cylindrical screen; 5. middle cylindrical screen; 6. internal cylindrical screen; 7. external adsorption layer; 8. internal adsorption layer; 9. exhaust pipe; 10. central flow channel; 11. partition; 12. third adsorption layer; 13. second adsorption layer; 14. first adsorption layer; 15. diversion flow channel; 16. external flow channel; 17. first feed pipe; 18. second feed pipe; 19. solenoid valve; 20. visual window; 21. tempered glass. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The embodiments of this application disclose Figure 1-5 A vertical radial flow adsorber comprises a tank body 1, a lower head 2 is arranged at the bottom of the tank body 1, an air inlet pipe 3 is arranged at the bottom of the lower head 2, and an adsorption mechanism is arranged inside the tank body 1;

[0026] The adsorption mechanism includes an external cylindrical screen 4 arranged inside the tank body 1, a middle cylindrical screen 5 is arranged on one side of the external cylindrical screen 4, an internal cylindrical screen 6 is arranged on one side of the middle cylindrical screen 5, the bottoms of the external cylindrical screen 4, the middle cylindrical screen 5 and the internal cylindrical screen 6 are all fixedly connected to the lower head 2, an external adsorption layer 7 is arranged between the external cylindrical screen 4 and the middle cylindrical screen 5, an internal adsorption layer 8 is arranged between the middle cylindrical screen 5 and the internal cylindrical screen 6, an exhaust pipe 9 is arranged on one side of the internal cylindrical screen 6, and a central flow channel 10 is arranged inside the exhaust pipe 9, and normal temperature gas flows into the interior of the tank body 1 from the air inlet pipe 3 at the bottom of the lower head 2, and the air inlet pipe 3 is designed at the bottom of the tank body 1 Through a reasonable pipeline and valve structure, the gas is allowed to evenly enter the interior of the tank body 1, and flows from the diversion channel 15 in sequence through the outer cylindrical screen 4, the middle cylindrical screen 5 and the inner cylindrical screen 6. Since the diameter of the adsorbed particles in the adsorption layers of the third adsorption layer 12, the second adsorption layer 13 and the first adsorption layer 14 gradually decreases from bottom to top, a cylindrical partition 11 is arranged in the tank body 1, and the outer cylindrical screen 4, the middle cylindrical screen 5 and the inner cylindrical screen 6 are divided into multiple areas. The design of the partition 11 will take into account the uniform distribution of the airflow and the full utilization of the adsorbent, so as to realize the optimized layout of the airflow and the adsorbent in the adsorption bed, and the airflow pressure drop is increased in sequence, so that the velocity field and the concentration field of the entire adsorption layer are more uniform.

[0027] Reference Figure 2-3As shown, the outer cylindrical screen 4, the middle cylindrical screen 5 and the inner cylindrical screen 6 are all provided with a plurality of partitions 11, the tops of the plurality of partitions 11 are respectively provided with a third adsorption layer 12, a second adsorption layer 13 and a first adsorption layer 14, the third adsorption layer 12 is provided at the bottom of the second adsorption layer 13, the first adsorption layer 14 is provided at the bottom of the second adsorption layer 13, the adsorption particle diameters of the third adsorption layer 12, the second adsorption layer 13 and the first adsorption layer 14 are gradually reduced from bottom to top, and after being adsorbed by the adsorbent, the gas flows into the outer flow channel 16, and then flows into The central flow channel 10 inside the exhaust pipe 9 finally flows out from the exhaust pipe 9. Each layer of the third adsorption layer 12, the second adsorption layer 13 and the first adsorption layer 14 is filled with appropriate adsorbents. The type and amount of the adsorbent will be selected according to the properties of the target gas and the adsorption requirements. The exhaust pipe 9 is arranged on the top of the tank body 1. By optimizing the airflow channel and reducing the airflow resistance, it is ensured that the adsorbed gas can be discharged smoothly. The diameters of the adsorption particles in the third adsorption layer 12, the second adsorption layer 13 and the first adsorption layer 14 gradually decrease from bottom to top in order to achieve better adsorption effects.

[0028] Reference Figure 4-5 As shown, a bypass flow channel 15 is formed between the external cylindrical screen 4 and the side wall of the tank body 1, an external flow channel 16 is arranged between the internal cylindrical screen 6 and the exhaust pipe 9, a first feed pipe 17 is arranged on the top of the tank body 1, a second feed pipe 18 is arranged on one side of the first feed pipe 17, and a solenoid valve 19 is arranged on the top of the first feed pipe 17 and the second feed pipe 18. A visual window 20 is opened on the surface of the tank body 1, and a tempered glass 21 is arranged inside the visual window 20. The high-temperature gas flows into the central flow channel 10 from the top exhaust pipe 9, and then flows into the external flow channel 16, and flows through the first adsorption layer 14, the second adsorption layer 13, and the third adsorption layer 12 in turn, and merges into the bypass flow channel 15 after the adsorbent is regenerated, and the gas flows out from the bottom air inlet pipe 3. In order to facilitate operation and monitoring, the structure is designed with a visual window 20. By installing the tempered glass 21, the working state of the adsorption bed can be visually observed, abnormal conditions can be discovered and handled in time, and safety is improved.

[0029] Working principle of the utility model: When the utility model is used, during adsorption, normal temperature gas flows into the interior of the tank body 1 from the air inlet pipe 3 at the bottom of the lower head 2. The air inlet pipe 3 is designed at the bottom of the tank body 1. Through a reasonable pipeline and valve structure, the gas evenly enters the interior of the tank body 1, and flows through the external cylindrical screen 4, the middle cylindrical screen 5 and the internal cylindrical screen 6 from the diversion channel 15 in sequence. Since the diameter of the adsorbed particles in the adsorption layers of the third adsorption layer 12, the second adsorption layer 13 and the first adsorption layer 14 gradually decreases from bottom to top, a cylindrical partition 11 is set in the tank body 1 to divide the external cylindrical screen 4, the middle cylindrical screen 5 and the internal cylindrical screen 6 into multiple areas. The design of the partition 11 will take into account To achieve uniform distribution of airflow and full utilization of adsorbent, realize optimized layout of airflow and adsorbent in adsorption bed, increase airflow pressure drop successively, make velocity field and concentration field of whole adsorption layer more uniform, after adsorption by adsorbent, gas flows into external flow channel 16, then flows into central flow channel 10 inside exhaust pipe 9, finally flows out from exhaust pipe 9, each layer of third adsorption layer 12, second adsorption layer 13 and first adsorption layer 14 is filled with appropriate adsorbent, the type and amount of adsorbent will be selected according to the property and adsorption requirement of target gas, exhaust pipe 9 is arranged on the top of tank body 1, by optimizing airflow channel, reducing airflow resistance, ensure that adsorbed gas can be discharged smoothly;

[0030] During desorption, the high-temperature gas flows from the top exhaust pipe 9 into the central flow channel 10, and then flows into the external flow channel 16, and flows through the first adsorption layer 14, the second adsorption layer 13, and the third adsorption layer 12 in sequence. After the adsorbent is regenerated, it flows into the branch flow channel 15, and the gas flows out from the bottom air inlet pipe 3. For the convenience of operation and monitoring, the structure is designed with a visual window 20. By installing tempered glass 21, the working status of the adsorption bed can be visually observed, and abnormal situations can be discovered and handled in time. In addition, it is worth noting that the adsorbent is a prior art and will not be elaborated on here.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vertical radial flow adsorber, comprising a tank body (1), characterized in that: The bottom of the tank body (1) is provided with a lower sealing head (2), the bottom of the lower sealing head (2) is provided with an air inlet pipe (3), and the interior of the tank body (1) is provided with an adsorption mechanism; The adsorption mechanism comprises an external cylindrical screen (4) arranged inside the tank body (1), a middle cylindrical screen (5) is arranged on one side of the external cylindrical screen (4), an internal cylindrical screen (6) is arranged on one side of the middle cylindrical screen (5), the bottoms of the external cylindrical screen (4), the middle cylindrical screen (5) and the internal cylindrical screen (6) are all fixedly connected to the lower head (2), an external adsorption layer (7) is arranged between the external cylindrical screen (4) and the middle cylindrical screen (5), an internal adsorption layer (8) is arranged between the middle cylindrical screen (5) and the internal cylindrical screen (6), an exhaust pipe (9) is arranged on one side of the internal cylindrical screen (6), and a central flow channel (10) is arranged inside the exhaust pipe (9).

2. The vertical radial flow adsorber according to claim 1, characterized in that: A plurality of partitions (11) are arranged inside the outer cylindrical screen (4), the middle cylindrical screen (5) and the inner cylindrical screen (6), and a third adsorption layer (12), a second adsorption layer (13) and a first adsorption layer (14) are arranged on the top of the plurality of partitions (11), respectively.

3. The vertical radial flow adsorber according to claim 2, characterized in that: The third adsorption layer (12) is arranged at the bottom of the second adsorption layer (13), the first adsorption layer (14) is arranged at the bottom of the second adsorption layer (13), and the diameters of the adsorption particles in the third adsorption layer (12), the second adsorption layer (13) and the first adsorption layer (14) gradually decrease from bottom to top.

4. The vertical radial flow adsorber according to claim 1, characterized in that: A flow diversion channel (15) is formed between the external cylindrical screen (4) and the side wall of the tank body (1), and an external flow channel (16) is provided between the internal cylindrical screen (6) and the exhaust pipe (9).

5. The vertical radial flow adsorber according to claim 1, characterized in that: A first feed pipe (17) is arranged at the top of the tank body (1), a second feed pipe (18) is arranged on one side of the first feed pipe (17), and solenoid valves (19) are arranged at the tops of both the first feed pipe (17) and the second feed pipe (18).

6. The vertical radial flow adsorber according to claim 1, characterized in that: A visual window (20) is provided on the surface of the tank body (1), and tempered glass (21) is provided inside the visual window (20).

Images