Radial flow adsorber for pressure swing adsorption
By improving the structural design of the radial flow adsorber, using the airflow distributor and the wire-wound screen pipe, the problems of uneven filling of molecular sieves and short-circuiting of airflow in traditional radial flow adsorbers are solved, and more efficient airflow distribution and molecular sieve utilization are achieved.
Patent Information
- Application Number
- CN202421879379.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-06
AI Technical Summary
Traditional radial flow adsorbers have problems of short-circuiting and uneven isolation during the molecular sieve loading process, resulting in reduced equipment performance and cumbersome production.
The upper head, lower head and outer conical barrel structure are adopted, combined with the airflow distributor, screen barrel and partition design, and the wire ore screen tube is used as the molecular sieve isolation material to ensure that the molecular sieve is filled and evenly distributed, and eliminate the phenomenon of air flow short circuit.
The full filling of molecular sieve and uniform distribution of air flow are achieved, the space utilization and air flow of the equipment are improved, and the filling process of molecular sieve is simplified.
Smart Images
Figure CN223082532U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas separation and purification, in particular to a radial flow adsorber for pressure swing adsorption. Background Technique
[0002] Traditional radial flow adsorbers generally have at least two beds in the radial direction. Each bed needs to be provided with a packing port, and the packing ports are arranged on the upper head, and are evenly arranged along the circumference above the corresponding bed. When loading molecular sieves, it is not easy to fill the molecular sieves far from the packing port, resulting in gas flow short-circuit. In order to prevent gas flow short-circuit, more molecular sieves need to be loaded or more packing ports need to be set; the isolation between different molecular sieves in traditional radial flow adsorbers mostly adopts the method of orifice plate plus wire mesh. The orifice plate is rolled into a steel cylinder to bear the pressure of the molecular sieves. However, the pores of the orifice plate are relatively large and cannot form isolation between the molecular sieves. It is also necessary to add a layer of wire mesh with a pore diameter smaller than the diameter of the molecular sieves inside or outside the orifice plate, and then fix the wire mesh on the orifice plate with a pressing strip. The production is relatively cumbersome. Moreover, when the size of the adsorber is small, the uneven gas flow caused by the difference in air permeability between the longitudinal seams of the wire mesh and the wire mesh itself will also affect the performance of the equipment. Therefore, improvement is urgently needed. Therefore, we propose a radial flow adsorber for pressure swing adsorption. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a radial flow adsorber for pressure swing adsorption, which solves the problems raised in the background technique.
[0004] To achieve the above purpose, the utility model provides the following technical solution: A radial flow adsorber for pressure swing adsorption, including an upper head, a lower head and an outer cone cylinder connecting the upper head and the lower head. An air inlet is opened at the bottom of the lower head, and an air flow distributor is arranged at one end of the air inlet facing the inside of the lower head. A first screen cylinder is arranged on the side of the lower head inside and far from the air inlet. A partition plate is fixedly arranged at the top of the first screen cylinder. The partition plate includes a bottom cover plate and a packing pipe communicated with the top of the bottom cover plate. A plug is threadedly arranged at the top of the packing pipe. The inner cavity of the packing pipe is a second packing port. The area between the lower head and the partition plate is a first chamber. A second screen cylinder is arranged on the top of the bottom cover plate of the partition plate. The area between the second screen cylinder and the outer cone cylinder is a second chamber. A third screen cylinder is arranged at one end of the top of the partition plate close to the packing pipe. The area between the third screen cylinder and the second screen cylinder is a third chamber. The area between the third screen cylinder and the packing pipe is a fourth chamber. A gas production port flange is fixedly arranged at the top of the upper head. A plurality of first packing ports communicated with the third chamber are annularly arranged on the gas production port flange. A gas production port flange is arranged at the top of the gas production port flange. A gas production pipe communicated with the fourth chamber is integrally formed at the center position of the top of the gas production port flange.
[0005] As a preferred implementation of the technical solution of the present application, the interior of the first chamber is filled with 13x molecular sieve, and the interior of the third chamber is filled with oxygen-producing molecular sieve.
[0006] As a preferred implementation of the technical solution of the present application, a sealing ring installation groove is provided on the top surface of the gas production port flange, and a sealing ring is embedded in the sealing ring installation groove.
[0007] As a preferred implementation of the technical solution of the present application, a discharge pipe 1 is connected to the bottom of the bottom cover plate of the partition, and the discharge pipe 1 penetrates the bottom of the lower head.
[0008] As a preferred implementation of the technical solution of the present application, a second discharge pipe is provided at the bottom of the lower head, and the second discharge pipe is connected to the first chamber.
[0009] As a preferred implementation of the technical solution of the present application, an air inlet flange is fixedly provided at the center position of the lower head, the air inlet is provided at the bottom of the air inlet flange, and the air flow distributor is welded to the top of the air inlet flange.
[0010] As a preferred implementation of the technical solution of the present application, the screen drum 1, the screen drum 2 and the screen drum 3 are all arranged concentrically, and the screen drum 1, the screen drum 2 and the screen drum 3 all adopt wire-wound ore screen tubes.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0012] The technical solution of the present application uses structural design to enable the molecular sieve to fill the upper head, eliminating the phenomenon of short-circuiting the top molecular sieve; the wire-wound sieve tube has no seams on the circumference and is evenly distributed, which improves the uniformity of airflow; the molecular sieve is filled in the lower head, which not only plays the role of airflow buffering, but also improves the space utilization rate of the tank; with the special filling hopper, the molecular sieve can be filled more quickly. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:
[0014] Figure 1 is a cross-sectional view of a radial flow adsorber;
[0015] Figure 2 A cross-sectional view of a radial flow adsorber AA.
[0016] In the figure: 1. Inlet flange; 2. Airflow distributor; 3. Partition plate; 4. Lower head; 5. First sieve cylinder; 6. Outer conical cylinder; 7. Second sieve cylinder; 8. Third sieve cylinder; 9. Packing tube; 10. Upper head; 11. Gas production port flange; 12. Sealing ring; 13. Gas production port flange; 14. Plug; 15. Second packing port; 16. First packing port; 17. Sealing ring installation groove; 18. First chamber; 19. Second discharge pipe; 20. First discharge pipe; 21. Second chamber; 22. Third chamber; 23. Inlet; 24. Gas production pipe; 25. Fourth chamber. Detailed implementation mode
[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0018] Embodiment 1, as Figure 1-2 shown, the present invention provides a technical solution: a radial flow adsorber for pressure swing adsorption, including an upper head 10, a lower head 4, and an outer conical cylinder 6 connecting the upper head 10 and the lower head 4. An inlet 23 is opened at the bottom of the lower head 4. One end of the inlet 23 facing the inside of the lower head 4 is provided with an airflow distributor 2. A first sieve cylinder 5 is arranged on one side inside the lower head 4 and away from the inlet 23. A partition plate 3 is fixedly arranged at the top of the first sieve cylinder 5. The partition plate 3 includes a bottom cover plate and a packing tube 9 connected to the top of the bottom cover plate. A plug 14 is threadedly arranged at the top of the packing tube 9. The inner cavity of the packing tube 9 is the second packing port 15. The area between the lower head 4 and the partition plate 3 is the first chamber 18. A second sieve cylinder 7 is arranged on the top of the bottom cover plate of the partition plate 3. The area between the second sieve cylinder 7 and the outer conical cylinder 6 is the second chamber 21. A third sieve cylinder 8 is arranged at one end of the top of the partition plate 3 and close to the packing tube 9. The area between the third sieve cylinder 8 and the second sieve cylinder 7 is the third chamber 22. The area between the third sieve cylinder 8 and the packing tube 9 is the fourth chamber 25. A gas production port flange 11 is fixedly arranged at the top of the upper head 10. A plurality of first packing ports 16 communicating with the third chamber 22 are circumferentially opened on the gas production port flange 11. A gas production port flange 13 is arranged at the top of the gas production port flange 11. A gas production pipe 24 communicating with the fourth chamber 25 is integrally formed at the center position of the top of the gas production port flange 13. The first chamber 18 is filled with 13x type molecular sieve, the third chamber 22 is filled with oxygen production molecular sieve, an inlet flange 1 is fixedly arranged at the center position of the lower head 4, the inlet 23 is arranged at the bottom of the inlet flange 1, and the top of the inlet flange 1 is fixedly connected to the airflow distributor 2 by welding.
[0019] In a specific embodiment of the present utility model, a first sieve cylinder 5 is connected between the lower head 4 and the partition plate 3. The first sieve cylinder 5 is used to prevent the molecular sieve inside the first chamber 18 from entering the second chamber 21. The packing tube 9 at the center of the top of the partition plate 3 is used for loading the molecular sieve inside the first chamber 18. By unscrewing the plug 14 and cooperating with a funnel, the molecular sieve can be quickly loaded into the first chamber 18. Opening the valve (not shown in the figure) at the bottom end of the second discharge pipe 19 can discharge the ineffective molecular sieve inside the first chamber 18. The sealing ring installation groove 17 at the top of the gas production port flange 11 is sequentially provided with a sealing ring 12, and the gas production port flange 13 is assembled on the top of the gas production port flange 11, which can realize the isolation between the third chamber 22 and the atmosphere and the fourth chamber 25. After removing the gas production port flange 13, through the first packing port 16 and cooperating with a funnel, the molecular sieve can be quickly loaded into the third chamber 22. Among them, the molecular sieve is isolated by a wire-wound ore sieve tube, and the gaps of the wire-wound ore sieve tube can be customized according to the particle size of the molecular sieve, and the gaps are evenly distributed in the axial and radial directions. Opening the valve (not shown in the figure) at the bottom end of the first discharge pipe 20 can discharge the ineffective molecular sieve inside the third chamber 22. In the initial state, the gas production port flange 13 is installed on the top of the gas production port flange 11 through bolts, the plug 14 is installed on the top of the packing tube 9, and both the second discharge pipe 19 and the first discharge pipe 20 are in a closed state. The first chamber 18 is filled with 13X type molecular sieve, and the third chamber 22 is filled with oxygen-producing molecular sieve. The gas enters the air distributor 2 through the air inlet 23. The air distributor 2 has uniform gaps in the circumferential direction, so that the air flow evenly spreads from the periphery of the air distributor 2. The air flow fully contacts with the 13X type molecular sieve for water absorption and drying. Subsequently, the air flow passes through the first sieve cylinder 5 and enters the second chamber 21, and then enters the third chamber 22 and the fourth chamber 25 in sequence, and finally is discharged from the port of the gas production pipe 24.
[0020] In the preferred technical solution, a sealing ring installation groove 17 is provided on the top surface of the gas production port flange 11, and a sealing ring 12 is embedded inside the sealing ring installation groove 17. The sealing ring 12 is sequentially placed in the sealing ring installation groove 17 at the top of the gas production port flange 11, and the gas production port flange 13 is assembled on the top of the gas production port flange 11, which can realize the isolation between the third chamber 22 and the atmosphere and the fourth chamber 25.
[0021] In the preferred technical solution, a first discharge pipe 20 is connected to the bottom of the bottom cover plate of the partition plate 3. The first discharge pipe 20 penetrates through the bottom of the lower head 4. The penetration point of the first discharge pipe 20 and the lower head 4 is sealed by circumferential full welding. Opening the valve at the bottom end of the first discharge pipe 20 facilitates the discharge of the ineffective molecular sieve inside the third chamber 22.
[0022] In the preferred technical solution, a second discharge pipe 19 is connected to the bottom of the lower head 4. The second discharge pipe 19 is connected to the first chamber 18. Opening the valve at the bottom end of the second discharge pipe 19 can discharge the ineffective molecular sieve inside the first chamber 18.
[0023] In the preferred technical solution, the first sieve cylinder 5, the second sieve cylinder 7, and the third sieve cylinder 8 are all arranged concentrically, which is convenient for the radial flow of the air flow, enabling the air flow to fully contact the molecular sieve. The first sieve cylinder, the second sieve cylinder, and the third sieve cylinder all adopt wire-wound ore sieve tubes. The gaps of the wire-wound ore sieve tubes can be customized according to the particle size of the molecular sieve, and the gaps are evenly distributed axially and radially, which can block the molecular sieve while allowing the air flow to pass through.
[0024] In summary, through the structural design of the adsorber in this embodiment, the molecular sieve can fill the upper head, eliminating the phenomenon of short-circuit of the molecular sieve at the top; the wire-wound ore sieve tube has no seams in the circumferential direction and is evenly distributed, improving the uniformity of the air flow; the lower head is filled with the molecular sieve, which not only plays a role in buffering the air flow but also improves the space utilization rate of the tank body; in cooperation with the special filler hopper, the filling of the molecular sieve is faster.
Claims
1. A radial flow adsorber for pressure swing adsorption, characterized in that: It includes an upper head (10), a lower head (4), and an outer conical cylinder (6) connecting the upper head (10) and the lower head (4). An air inlet (23) is provided at the bottom of the lower head (4). One end of the air inlet (23) facing the interior of the lower head (4) is provided with an air flow distributor (2). A first sieve cylinder (5) is provided on one side of the interior of the lower head (4) and away from the air inlet (23). A partition plate (3) is fixedly provided at the top of the first sieve cylinder (5). The partition plate (3) includes a bottom cover plate and a packing tube (9) communicated with the top of the bottom cover plate. A plug (14) is threadedly provided at the top of the packing tube (9). The inner cavity of the packing tube (9) is a second packing port (15). The area between the lower head (4) and the partition plate (3) is a first chamber (18). A second sieve cylinder (7) is provided on the top of the bottom cover plate of the partition plate (3). The area between the second sieve cylinder (7) and the outer conical cylinder (6) is a second chamber (21). A third sieve cylinder (8) is provided at one end of the top of the partition plate (3) and close to the packing tube (9). The area between the third sieve cylinder (8) and the second sieve cylinder (7) is a third chamber (22). The area between the third sieve cylinder (8) and the packing tube (9) is a fourth chamber (25). A gas production port flange (11) is fixedly provided at the top of the upper head (10). A number of first packing ports (16) communicated with the third chamber (22) are circumferentially provided on the gas production port flange (11). A gas production port flange (13) is provided at the top end of the gas production port flange (11). A gas production pipe (24) communicated with the fourth chamber (25) is integrally formed at the center position of the top of the gas production port flange (13).
2. The radial flow adsorber for pressure swing adsorption according to claim 1, wherein: The first chamber (18) is filled with 13x type molecular sieve, and the third chamber (22) is filled with oxygen production molecular sieve.
3. A radial flow adsorber for pressure swing adsorption according to claim 1, characterized in that: A sealing ring installation groove (17) is provided on the top surface of the gas production port flange (11), and a sealing ring (12) is inlaid in the sealing ring installation groove (17).
4. A radial flow adsorber for pressure swing adsorption according to claim 1, characterized in that: A first discharge pipe (20) is communicated with the bottom of the bottom cover plate of the partition plate (3), and the first discharge pipe (20) penetrates through the bottom of the lower head (4).
5. A radial flow adsorber for pressure swing adsorption according to claim 1, characterized in that: A second discharge pipe (19) is communicated with the bottom of the lower head (4), and the second discharge pipe (19) is communicated with the first chamber (18).
6. A radial flow adsorber for pressure swing adsorption according to claim 1, characterized in that: An air inlet flange (1) is fixedly provided at the center position of the lower head (4). The air inlet (23) is provided at the bottom of the air inlet flange (1), and the top of the air inlet flange (1) is fixedly connected with the air flow distributor (2) by welding.
7. A radial flow adsorber for pressure swing adsorption according to claim 1, wherein: The first sieve cylinder (5), the second sieve cylinder (7), and the third sieve cylinder (8) are all concentrically arranged, and the first sieve cylinder (5), the second sieve cylinder (7), and the third sieve cylinder (8) are all made of wire-wound ore sieve tubes.