A pressure-swing hydrogen recovery adsorption tower

Abstract

The utility model discloses a pressure-swing hydrogen recovery adsorption tower, which relates to the technical field of hydrogen production equipment; it comprises a tower body, wherein an air inlet pipe is arranged at the bottom of the tower body, an air outlet pipe is installed at one side of the top of the tower body, an arc-shaped groove communicated with the inner cavity of the air outlet pipe is opened on the outer wall of the air outlet pipe, a filter screen which can pass through the arc-shaped groove is detachably connected to the inner cavity of the air outlet pipe, an arc-shaped sealing gasket which can close the arc-shaped groove is fixedly connected to the outer wall of the filter screen, a lower porous plate is fixedly arranged at the bottom end of the inner cavity of the tower body, an upper porous plate is movably arranged at the top end of the inner cavity of the tower body, and the inner cavity of the tower body is located between the upper porous plate and the lower porous plate and is filled with a molecular sieve; the pressure-swing hydrogen recovery adsorption tower can filter the differentiated molecular sieve contained in the hydrogen in the process of the tower body outlet gas by arranging the filter screen, so as to ensure the purity of the hydrogen discharged from the tower body.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production equipment, in particular to a pressure-switching hydrogen recovery adsorption tower. Background Art

[0002] Pressure Swing Adsorption (PSA) gas separation and purification technology has become a production process and an independent device operation process in large-scale chemical industry. Since pressure swing adsorption (PSA) gas separation technology relies on pressure changes to achieve adsorption and regeneration, it has a fast regeneration speed and low energy consumption, and is an energy-saving gas separation technology. In addition, the process is simple, the operation is stable, and for mixed gases containing multiple impurities, impurities can be removed at one time to obtain high-purity products. Therefore, it has developed very rapidly in the past thirty years and has been widely used in the purification of hydrogen in hydrogen-containing gases.

[0003] The adsorption tower is filled with molecular sieves. When working, hydrogen enters the adsorption tower, passes through the molecular sieve to adsorb the impurity gas in the hydrogen, and then is discharged from the adsorption tower. As the molecular sieve is used continuously, the molecular sieve will begin to pulverize. When hydrogen passes through the molecular sieve, the pulverized molecular sieve will mix into the hydrogen under the action of gas pressure, and eventually the hydrogen discharged from the adsorption tower is not pure. Utility Model Content

[0004] The utility model provides a pressure-swing hydrogen recovery adsorption tower to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pressure swing hydrogen recovery adsorption tower, comprising a tower body, an air inlet pipe is provided at the bottom of the tower body, an air outlet pipe is installed on one side of the top of the tower body, an outer wall of the air outlet pipe is provided with an arc-shaped groove connected with its inner cavity, the inner cavity of the air outlet pipe is detachably connected with a filter screen that can pass through the arc-shaped groove, the outer wall of the filter screen is fixedly connected with an arc-shaped sealing gasket that can close the arc-shaped groove, a lower porous plate is fixedly provided at the bottom end of the inner cavity of the tower body, an upper porous plate is movably provided at the top end of the inner cavity of the tower body, and the inner cavity of the tower body is located between the upper porous plate and the lower porous plate and is filled with a molecular sieve.

[0006] Furthermore, the outer wall of the air outlet pipe is fixedly connected to a fixing block on one side of the arc groove, a positioning groove is provided on the side of the fixing block close to the arc groove, the top of the sealing gasket block is fixedly connected to an operating handle, and one side of the operating handle is fixedly connected to a positioning block that can be inserted into the positioning groove.

[0007] Furthermore, the positioning groove is T-shaped, and the positioning block is also T-shaped.

[0008] Furthermore, an adjusting bolt is threadedly connected to the surface of the fixing block, and the end of the adjusting bolt can extend into the positioning groove and press against the positioning block.

[0009] Furthermore, the top of the upper porous plate is fixedly connected to a movable rod that movably penetrates the tower body, the top of the movable rod is fixedly connected to a connecting plate, the top of the tower body is fixedly connected to a fixing screw that passes through the connecting plate, and the part of the fixing screw located above the connecting plate is threadedly connected to a nut.

[0010] Furthermore, a spring is sleeved on a portion of the fixing screw located between the tower body and the connecting plate.

[0011] Compared with the prior art, the utility model provides a pressure swing hydrogen recovery adsorption tower, which has the following beneficial effects:

[0012] 1. The pressure swing recovery hydrogen adsorption tower can filter the differentiated molecular sieve contained in the hydrogen during the gas discharge process of the tower body by setting a filter net to ensure the purity of the hydrogen discharged from the tower body.

[0013] 2. The pressure swing recovery hydrogen adsorption tower can compact the molecular sieve in the tower body by arranging a movable upper porous plate, cooperating with a fixed screw, a nut, a connecting plate and a movable rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the planar structure of the utility model;

[0016] Figure 3 It is an enlarged schematic diagram of point A of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the air outlet pipe of the utility model;

[0018] Figure 5 It is an enlarged schematic diagram of point B of the present utility model.

[0019] In the figure: 1. tower body; 2. air inlet pipe; 3. air outlet pipe; 4. arc groove; 5. filter screen; 6. sealing gasket; 7. fixing block; 8. positioning groove; 9. operating handle; 10. positioning block; 11. lower porous plate; 12. upper porous plate; 13. movable rod; 14. connecting plate; 15. fixing screw; 16. nut; 17. spring. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-5 The utility model discloses a pressure swing hydrogen recovery adsorption tower, comprising a tower body 1, an air inlet pipe 2 is provided at the bottom of the tower body 1, an air outlet pipe 3 is installed on one side of the top of the tower body 1, an outer wall of the air outlet pipe 3 is provided with an arc groove 4 connected with its inner cavity, the inner cavity of the air outlet pipe 3 is detachably connected with a filter screen 5 that can pass through the arc groove 4, the outer wall of the filter screen 5 is fixedly connected with an arc-shaped sealing gasket 6 that can close the arc groove 4, a lower porous plate 11 is fixedly provided at the bottom end of the inner cavity of the tower body 1, an upper porous plate 12 is movably provided at the top end of the inner cavity of the tower body 1, and the inner cavity of the tower body 1 is located between the upper porous plate 12 and the lower porous plate 11 and is filled with a molecular sieve.

[0022] Specifically, the outer wall of the air outlet pipe 3 is fixedly connected to a fixing block 7 on one side of the arc groove 4, a positioning groove 8 is provided on the side of the fixing block 7 close to the arc groove 4, an operating handle 9 is fixedly connected to the top of the sealing gasket block 6, and a positioning block 10 that can be inserted into the positioning groove 8 is fixedly connected to one side of the operating handle 9.

[0023] The positioning groove 8 is T-shaped, and the positioning block 10 is also T-shaped.

[0024] An adjusting bolt is threadedly connected to the surface of the fixing block 7 , and the end of the adjusting bolt can extend into the positioning groove 8 and press against the positioning block 10 .

[0025] In this embodiment, the filter 5 can be an activated carbon filter, a HEPA filter, or a combination of the two. When installing the filter 5, the filter 5 is inserted into the inner cavity of the exhaust pipe 3 through the arc groove 4, and the sealing gasket 6 seals the arc groove 4. At the same time, the positioning block 10 can be inserted into the positioning groove 8, and the adjusting bolt is tightened. The end of the adjusting bolt is pressed against the positioning block 10, so that the positioning block 10 is limited, thereby ensuring that the installation of the filter 5 is completed.

[0026] Specifically, the top of the upper porous plate 12 is fixedly connected to a movable rod 13 that movably penetrates the tower body 1, the top of the movable rod 13 is fixedly connected to a connecting plate 14, the top of the tower body 1 is fixedly connected to a fixing screw 15 that passes through the connecting plate 14, and the part of the fixing screw 15 located above the connecting plate 14 is threadedly connected to a nut 16.

[0027] A spring 17 is sleeved on a portion of the fixing screw 15 between the tower body 1 and the connecting plate 14 .

[0028] In this embodiment, when the nut 16 is loosened, the connecting plate 14 can be driven to rise and fall, so that the movable rod 13 drives the upper porous plate 12 to move, and cooperates with the spring 17 to adjust the compaction degree of the molecular sieve. After tightening the nut 16, the movement of the connecting plate 14 is limited.

[0029] In summary, the pressure swing recovery hydrogen adsorption tower, by setting a filter screen 5, can filter the differentiated molecular sieve contained in the hydrogen during the gas discharge from the tower body 1 to ensure the purity of the hydrogen discharged from the tower body 1. By setting a movable upper porous plate 12, in conjunction with the fixing screw 15, nut 16, connecting plate 14 and movable rod 13, the molecular sieve in the tower body 1 can be compressed and compacted.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure swing hydrogen recovery adsorption tower, comprising a tower body (1), characterized in that: An air inlet pipe (2) is provided at the bottom of the tower body (1), an air outlet pipe (3) is installed on one side of the top of the tower body (1), an arc-shaped groove (4) communicating with the inner cavity of the air outlet pipe (3) is provided on the outer wall of the air outlet pipe (3), a filter screen (5) that can pass through the arc-shaped groove (4) is detachably connected to the inner cavity of the air outlet pipe (3), an arc-shaped sealing gasket (6) that can close the arc-shaped groove (4) is fixedly connected to the outer wall of the filter screen (5), a lower porous plate (11) is fixedly provided at the bottom end of the inner cavity of the tower body (1), an upper porous plate (12) is movably provided at the top end of the inner cavity of the tower body (1), and the inner cavity of the tower body (1) is filled with a molecular sieve between the upper porous plate (12) and the lower porous plate (11).

2. A pressure swing hydrogen recovery adsorption tower according to claim 1, characterized in that: The outer wall of the air outlet pipe (3) is fixedly connected to a fixing block (7) on one side of the arc groove (4), and a positioning groove (8) is provided on a side of the fixing block (7) close to the arc groove (4). The top of the sealing pad (6) is fixedly connected to an operating handle (9), and one side of the operating handle (9) is fixedly connected to a positioning block (10) that can be inserted into the positioning groove (8).

3. A pressure swing hydrogen recovery adsorption tower according to claim 2, characterized in that: The positioning groove (8) is T-shaped, and the positioning block (10) is also T-shaped.

4. A pressure swing hydrogen recovery adsorption tower according to claim 3, characterized in that: An adjusting bolt is threadedly connected to the surface of the fixing block (7), and the end of the adjusting bolt can extend into the positioning groove (8) and abut against the positioning block (10).

5. A pressure swing hydrogen recovery adsorption tower according to claim 1, characterized in that: The top of the upper porous plate (12) is fixedly connected to a movable rod (13) that movably penetrates the tower body (1), the top of the movable rod (13) is fixedly connected to a connecting plate (14), the top of the tower body (1) is fixedly connected to a fixing screw (15) that passes through the connecting plate (14), and the part of the fixing screw (15) located above the connecting plate (14) is threadedly connected to a nut (16).

6. A pressure swing hydrogen recovery adsorption tower according to claim 5, characterized in that: A spring (17) is sleeved on the portion of the fixing screw rod (15) located between the tower body (1) and the connecting plate (14).

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