Coal chemical PSA hydrogen production device
By installing a pressure regulating mechanism and a sealing ring at the top of the preparation cylinder, the problem of inaccurate pressure control in the hydrogen production unit was solved, achieving precise pressure regulation and explosion-proof pressure relief, thus ensuring the stability and safety of the unit.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA BAOFENG COAL-BASED NEW MATERIAL CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-07-03
AI Technical Summary
In existing coal chemical PSA hydrogen production units, the pressure control inside the hydrogen production unit is not accurate enough, resulting in unstable operation of the secondary PSA.
A coal chemical PSA hydrogen production device was designed. By setting a pressure regulating mechanism at the top of the preparation cylinder, including a regulating cylinder and a pressure relief hole, and using an electric push rod to adjust the exposed amount of the pressure relief hole, combined with the setting of a sealing ring, the device can achieve precise control of the internal pressure of the preparation cylinder and explosion-proof pressure relief.
It achieves precise regulation of the internal pressure of the preparation cylinder and explosion-proof pressure relief, ensuring the stability and safety of the device operation, while maintaining airtightness to prevent leakage.
Smart Images
Figure CN224442572U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PSA hydrogen production technology, and in particular to a coal chemical PSA hydrogen production device. Background Technology
[0002] The coke manufacturing process typically generates a certain amount of raw coal gas, which contains core components such as hydrogen, carbon monoxide, nitrogen, carbon dioxide, and methane. Therefore, raw coal gas is gradually being effectively utilized as a new energy source. In the raw coal gas hydrogen production process, pressure swing adsorption (PSA) technology is usually the core, producing qualified, high-purity hydrogen. For large-scale raw coal gas hydrogen production, PSA is usually divided into two stages. One stage concentrates the hydrogen concentration; this stage is called the hydrogen enrichment stage. The other stage is called the purification stage. In the enrichment stage, the converted feed gas is passed through a specific adsorbent to remove some impurities from the process gas, thereby increasing the hydrogen concentration. The adsorbent is regenerated generally by methods such as depressurization or backwashing to release the adsorbed impurities.
[0003] Existing coal chemical PSA hydrogen production units suffer from inaccurate internal pressure control, leading to unstable operation of the secondary PSA.
[0004] Therefore, a coal chemical PSA hydrogen production unit is proposed to solve the problems mentioned above. Utility Model Content
[0005] The purpose of this invention is to address the aforementioned technical problems by providing a coal chemical PSA hydrogen production device that allows for pressure adjustment inside the preparation cylinder and an openable / closable seal at the top of the preparation cylinder.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a coal chemical PSA hydrogen production device, including a preparation cylinder, a cylinder cover installed at the bottom and top of the preparation cylinder, a gas pressure regulating mechanism provided at the top of the cylinder cover, and an insulation sleeve wrapped around the outside of the preparation cylinder;
[0007] The air pressure regulating mechanism includes an regulating cylinder, a connecting cylinder fixed in the middle of the top of the cylinder cover, the bottom end of the regulating cylinder tightly inserted into the interior of the connecting cylinder, a pressure relief hole on its surface, a connecting plate fixed to the top of the regulating cylinder, and electric push rods installed at both ends of the connecting plate.
[0008] Preferably, a connecting ring is fixed to the top of the preparation cylinder, a first sealing ring is bonded to the bottom of the cylinder cover, the bottom of the cylinder cover is pressed against the top of the connecting ring with the first sealing ring, and a bolt is connected between the top edge of the cylinder cover and the connecting ring.
[0009] Preferably, both the connecting cylinder and the adjusting cylinder are cylindrical structures and are vertically arranged. The pressure relief holes are evenly distributed on the surface of the adjusting cylinder, and a second sealing ring is connected to the bottom end of the adjusting cylinder. The second sealing ring is tightly connected to the inside of the connecting cylinder.
[0010] Preferably, the connecting plate is horizontally arranged, and the electric push rod is vertically fixed to the lifting mechanism of the cylinder cover.
[0011] Preferably, the surface of the connecting plate has a connecting hole, through which a connecting rod slides. The connecting rod is vertically arranged, and a stop block is fixed at its bottom end. A spring is sleeved on the surface of the connecting rod between the stop block and the connecting plate. The gap between the connecting rod and the adjusting cylinder is provided on both sides.
[0012] Preferably, a third sealing ring is fitted onto the surface of the adjusting cylinder and at the top of the connecting cylinder. The top of the third sealing ring is connected to an abutment ring, and the abutment block abuts against the top of the abutment ring. The abutment ring is a circular ring structure and is horizontally slidably fitted onto the surface of the adjusting cylinder.
[0013] Preferably, the bottom end of the preparation cylinder is fixed with an installation plate, the bottom end of its side is connected with a feed pipe, the top end of the side of the preparation cylinder is connected with a discharge pipe, and the bottom end of the surface of the discharge pipe is fixed with a pressure gauge.
[0014] Compared with the prior art, this utility model provides a coal chemical PSA hydrogen production device, which has the following beneficial effects:
[0015] 1. This utility model, by setting a connecting cylinder at the top of the cylinder cover and installing an adjusting cylinder at the top of the connecting cylinder, and setting a pressure relief hole on the surface of the adjusting cylinder, can adjust the number of pressure relief holes exposed at the top of the connecting cylinder by driving the connecting plate and the adjusting cylinder to rise and fall by an electric push rod, thereby adjusting the pressure inside the preparation cylinder and thus enabling explosion-proof pressure relief inside the preparation cylinder.
[0016] 2. This utility model, by having a cap, a first sealing ring, and bolts installed at the top of the preparation cylinder for opening and closing, and by providing a second sealing ring at the internal connection between the adjusting cylinder and the connecting cylinder, and a third sealing ring at the external connection between the adjusting cylinder and the connecting cylinder, can maintain the sealing and pressure of the preparation cylinder, and avoid leakage of the preparation cylinder, which would make it difficult to accurately control the pressure inside the preparation cylinder.
[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description
[0018] Figure 1This is a schematic diagram of the overall structure of a coal chemical PSA hydrogen production device proposed in this utility model;
[0019] Figure 2 This is a schematic diagram of the cylinder cover and regulating cylinder of a coal chemical PSA hydrogen production device proposed in this utility model.
[0020] Figure 3 This is a schematic diagram of the regulating cylinder and connecting plate of a coal chemical PSA hydrogen production device proposed in this utility model.
[0021] Figure 4 This is a schematic diagram of the connecting rod and abutment ring of a coal chemical PSA hydrogen production device proposed in this utility model;
[0022] Figure 5 This is a schematic diagram of the preparation cylinder section of a coal chemical PSA hydrogen production device proposed in this utility model.
[0023] In the diagram: 1. Preparation cylinder; 2. Mounting plate; 3. Feed pipe; 4. Pressure gauge; 5. Discharge pipe; 6. Insulation sleeve; 7. Connecting ring; 8. Bolt; 9. Cylinder cover; 10. Electric push rod; 11. Connecting plate; 12. Connecting rod; 13. Connecting cylinder; 14. Third sealing ring; 15. Abutment ring; 16. Adjusting cylinder; 17. First sealing ring; 18. Pressure relief hole; 19. Connecting hole; 20. Second sealing ring; 21. Spring; 22. Abutment block. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0025] 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.
[0026] Example 1: A coal chemical PSA hydrogen production unit, such as Figures 1-5 As shown, it includes a preparation cylinder 1, with a cylinder cover 9 installed at the bottom and top of the preparation cylinder 1. The top of the cylinder cover 9 is equipped with an air pressure regulating mechanism, and the outside of the preparation cylinder 1 is wrapped with an insulation sleeve 6.
[0027] The air pressure regulating mechanism includes an regulating cylinder 16, a connecting cylinder 13 fixed in the middle of the top of the cylinder cover 9, the bottom end of the regulating cylinder 16 tightly inserted into the interior of the connecting cylinder 13, and a pressure relief hole 18 opened on its surface. A connecting plate 11 is fixed to the top of the regulating cylinder 16, and electric push rods 10 are installed at both ends of the connecting plate 11.
[0028] In use, a connecting cylinder 13 is installed at the top of the cylinder cover 9, and an adjusting cylinder 16 is installed at the top of the connecting cylinder 13. A pressure relief hole 18 is provided on the surface of the adjusting cylinder 16. Thus, the raw material enters the preparation cylinder 1 from the feed pipe 3, and the preparation operation is carried out. The hydrogen produced by the preparation is discharged from the discharge pipe 5. During the process, the preparation cylinder 1 is kept warm by the insulation sleeve 6. Moreover, the pressure inside the preparation cylinder 1 is monitored by the pressure gauge 4. When the pressure inside the preparation cylinder 1 is too high, the connecting plate 11 and the adjusting cylinder 16 are raised and lowered by the electric push rod 10, thereby adjusting the number of pressure relief holes 18 exposed at the top of the connecting cylinder 13. This allows the gas pressure inside the preparation cylinder 1 to be discharged outward from the pressure relief hole 18, reducing the internal pressure of the preparation cylinder 1. In this way, the internal pressure of the preparation cylinder 1 can be regulated, and explosion-proof pressure relief can be performed inside the preparation cylinder 1.
[0029] Example 2: A coal chemical PSA hydrogen production unit, such as Figures 1-5 As shown, a connecting ring 7 is fixed to the top of the preparation cylinder 1, a first sealing ring 17 is bonded to the bottom of the cylinder cover 9, the bottom of the cylinder cover 9 is pressed against the top of the connecting ring 7 with the first sealing ring 17, and a bolt 8 is connected between the top edge of the cylinder cover 9 and the connecting ring 7.
[0030] Both the connecting cylinder 13 and the adjusting cylinder 16 are cylindrical structures and are vertically arranged. The pressure relief holes 18 are evenly distributed on the surface of the adjusting cylinder 16. The bottom end of the adjusting cylinder 16 is connected to a second sealing ring 20, which is tightly connected to the inside of the connecting cylinder 13.
[0031] The connecting plate 11 is set horizontally, and the electric push rod 10 is fixed vertically to the top of the cylinder cover 9.
[0032] The surface of the connecting plate 11 has a connecting hole 19, through which a connecting rod 12 slides. The connecting rod 12 is vertically arranged, and a stop block 22 is fixed at its bottom end. A spring 21 is sleeved on the surface of the connecting rod 12 between the stop block 22 and the connecting plate 11. The gap between the connecting rod 12 and the adjusting cylinder 16 is set on both sides.
[0033] A third sealing ring 14 is fitted onto the surface of the adjusting cylinder 16 and at the top of the connecting cylinder 13. An abutment ring 15 is connected to the top of the third sealing ring 14. An abutment block 22 abuts against the top of the abutment ring 15. The abutment ring 15 is a circular ring structure and is horizontally slidably fitted onto the surface of the adjusting cylinder 16.
[0034] A mounting plate 2 is fixed to the bottom of the preparation cylinder 1, a feed pipe 3 is connected to the bottom of its side, a discharge pipe 5 is connected to the top of the side of the preparation cylinder 1, and a pressure gauge 4 is fixed to the bottom of the surface of the discharge pipe 5.
[0035] In use, the preparation cylinder 1 can be opened and closed by means of the cylinder cover 9, the first sealing ring 17 and the bolt 8. At the same time, a second sealing ring 20 is provided at the internal connection between the regulating cylinder 16 and the connecting cylinder 13, and a third sealing ring 14 is provided at the external connection between the regulating cylinder 16 and the connecting cylinder 13. This can maintain the sealing and pressure of the preparation cylinder 1. The inside of the preparation cylinder 1 can be cleaned and maintained by opening and closing the cylinder cover 9. It can also prevent leakage of the preparation cylinder 1, which would make it difficult to accurately control the internal pressure of the preparation cylinder 1. This facilitates the control of the internal pressure of the preparation cylinder 1 and is beneficial to the hydrogen production of the preparation cylinder 1.
[0036] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A coal chemical PSA hydrogen production device, comprising a preparation cylinder (1), characterized in that: The preparation cylinder (1) is fitted with a cylinder cover (9) at the bottom and top. The top of the cylinder cover (9) is provided with a pressure regulating mechanism. The preparation cylinder (1) is wrapped with a heat insulation sleeve (6). The air pressure regulating mechanism includes an regulating cylinder (16), a connecting cylinder (13) is fixed in the middle of the top of the cylinder cover (9), the bottom end of the regulating cylinder (16) is tightly inserted into the interior of the connecting cylinder (13), and a pressure relief hole (18) is opened on its surface. A connecting plate (11) is fixed at the top of the regulating cylinder (16), and electric push rods (10) are installed at both ends of the connecting plate (11). The bottom end of the adjusting cylinder (16) is connected to a second sealing ring (20), and the second sealing ring (20) is tightly connected to the inside of the connecting cylinder (13); The surface of the connecting plate (11) has a connecting hole (19), and a connecting rod (12) slides through the inside of the connecting hole (19). The connecting rod (12) is vertically arranged, and a stop block (22) is fixed at its bottom end. A spring (21) is sleeved on the surface of the connecting rod (12) between the stop block (22) and the connecting plate (11). The gap between the connecting rod (12) and the two sides of the adjusting cylinder (16) is provided. A third sealing ring (14) is fitted onto the surface of the adjusting cylinder (16) and at the top of the connecting cylinder (13). An abutment ring (15) is connected to the top of the third sealing ring (14). The abutment block (22) abuts against the top of the abutment ring (15). The abutment ring (15) has a circular structure and is horizontally slidably fitted onto the surface of the adjusting cylinder (16).
2. The coal chemical PSA hydrogen production device according to claim 1, characterized in that, The top end of the preparation cylinder (1) is fixed with a connecting ring (7), and the bottom end of the cylinder cover (9) is bonded with a first sealing ring (17).
3. The coal chemical PSA hydrogen production device according to claim 2, characterized in that, The bottom end of the cylinder cover (9) is pressed against the top end of the connecting ring (7) with the first sealing ring (17) as a pad. The top edge of the cylinder cover (9) is connected to the connecting ring (7) by a bolt (8).
4. The coal chemical PSA hydrogen production device according to claim 1, characterized in that, Both the connecting cylinder (13) and the adjusting cylinder (16) are cylindrical structures and are vertically arranged. The pressure relief holes (18) are evenly distributed on the surface of the adjusting cylinder (16).
5. The coal chemical PSA hydrogen generating device according to claim 1, characterized in that, The connecting plate (11) is set horizontally, and the electric push rod (10) is fixed vertically to the lifting mechanism of the cylinder cover (9).
6. The coal chemical PSA hydrogen generating device according to claim 1, characterized in that, The bottom end of the preparation cylinder (1) is fixed with an installation plate (2), the bottom end of its side is connected with a feed pipe (3), the top end of the side of the preparation cylinder (1) is connected with a discharge pipe (5), and the bottom end of the surface of the discharge pipe (5) is fixed with a pressure gauge (4).