A hydrogen-removing adsorption column

Abstract

The utility model discloses a kind of hydrogen extraction adsorption towers, including tower body, the upper end of tower body is provided with tower cover, the bottom end of tower body is provided with air inlet, the top of tower cover is provided with gas outlet, the bottom of tower body is provided with gas distributor, detachably arranged with several layers filter plate in tower body;Heating wire and cooling water pipe are wound on the outer wall of the tower body, heating wire and cooling water pipe are staggered arrangement, electric heater and cold water tank are provided on the outer wall of tower body, circulation pump is provided on the pipeline of cooling water tank and cooling water pipe connection;Temperature sensor is provided in the tower body, PLC controller is provided on the tower body, the output end of temperature sensor is connected with the input end of PLC controller. The utility model is provided with heating wire and cooling water pipe on the outer wall of adsorption tower, realizes the control of hydrogen extraction temperature in adsorption tower, can also quickly replace filter plate in adsorption tower, ensure the effect and the efficiency of hydrogen extraction.

Description

Technical Field

[0001] This utility model relates to the field of gas separation technology, and more specifically to a hydrogen extraction adsorption tower. Background Technology

[0002] Hydrogen extraction technology is a crucial link in the hydrogen energy industry chain. It purifies hydrogen by utilizing the selective adsorption of different components in a gas mixture using adsorbents. Impurities are adsorbed under high pressure, followed by depressurization and regeneration. Most hydrogen extraction processes employ adsorption towers, which use filters to filter the gas mixture. The purity of the extracted hydrogen is typically related to the temperature and adsorption capacity within the adsorption tower. Temperatures that are too high or too low will affect the adsorption efficiency, while the filter layer directly influences the adsorption capacity of the gas mixture. Therefore, both temperature and the filter layer are critical factors in the hydrogen extraction process.

[0003] The filter layer of existing adsorption towers is fixedly installed inside the tower. After long-term operation, the filter layer needs to be replaced to ensure the hydrogen extraction effect. Although some adsorption towers allow filter layer replacement, most of them are fixed inside the tower with bolts. When replacing the filter layer, the bolts need to be unscrewed. Since the adsorption tower is quite deep, it is not convenient to rotate the bolts, thus affecting the efficiency of filter layer replacement. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a hydrogen extraction adsorption tower that can control the temperature inside the adsorption tower and facilitate the replacement of the filter layer inside the adsorption tower, thereby ensuring the hydrogen extraction effect.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0006] A hydrogen extraction adsorption tower includes a tower body with a tower cover at the top and an inlet for a mixed gas at the bottom. A gas distributor is located at the bottom of the tower body, and an outlet for hydrogen is located at the top of the tower cover. Several layers of filter plates for filtering the mixed gas and extracting hydrogen are detachably installed inside the tower body. Heating wires for heating the adsorption tower and cooling water pipes for cooling the adsorption tower are wound around the outer wall of the tower body, with the heating wires and cooling water pipes arranged alternately. An electric heater connected to the heating wires and a cold water tank connected to the cooling water pipes are installed on the outer wall of the tower body. A circulation pump is installed on the pipe connecting the cooling water tank and the cooling water pipes. A temperature sensor for collecting temperature information inside the tower is installed inside the tower body. A PLC controller is installed on the tower body. The output of the temperature sensor is connected to the input of the PLC controller, and the output of the PLC controller is connected to the inputs of the electric heater and the circulation pump, respectively.

[0007] To further optimize the technical solution, an installation groove is provided at the connection between the inner wall of the tower body and the filter plate, and a frame is provided at both ends of the filter plate. The frame is set in the tower body by a spring support assembly in the installation groove.

[0008] To further optimize the technical solution, the spring support assembly includes a top plate disposed in the mounting groove for abutting the frame, and a plurality of springs for supporting the top plate are disposed between the inner side of the top plate and the inner wall of the mounting groove.

[0009] To further optimize the technical solution, the frame is provided with a hanging ring for easy installation and removal of the filter plate.

[0010] To further optimize the technical solution, the filter plate is provided with wire mesh on the upper and lower sides for fixing the adsorption material.

[0011] To further optimize the technical solution, the tower cover is mounted on the tower body via a rotating shaft. Mounting ear plates are respectively provided on the tower cover and the tower body opposite to the rotating shaft. Threaded holes are opened on the mounting ear plates, and bolts for fixing the tower body and the tower cover are inserted into the threaded holes.

[0012] To further optimize the technical solution, the filter plate is configured from bottom to top as an activated carbon adsorption layer, a silica gel adsorption layer, a primary molecular sieve, and a secondary molecular sieve.

[0013] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0014] This utility model provides a hydrogen extraction adsorption tower, which is equipped with heating wires and cooling water pipes on the outer wall of the adsorption tower to raise and lower the temperature of the adsorption tower, thereby realizing the control of the hydrogen extraction temperature inside the adsorption tower. At the same time, it can also quickly replace the filter plates inside the adsorption tower, ensuring the hydrogen extraction effect and efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0017] Figure 3 This is a schematic diagram of the structure of the filter plate of this utility model.

[0018] The components are: 1. Tower body, 2. Shaft, 3. Tower cover, 4. Air inlet, 5. Air outlet, 6. Gas distributor, 7. Filter plate, 8. Cooling water pipe, 9. Heating wire, 10. Electric heater, 11. Cooling water tank, 12. Mounting lug, 13. Bolt, 14. Circulation pump, 15. Frame, 16. Mounting groove, 17. Hanging ring, 18. Top plate, 19. Spring, 20. Wire mesh, 21. Temperature sensor. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] A hydrogen adsorption tower, combined with Figures 1 to 3 As shown, the tower body 1 is provided with a tower cover 3 at the upper end of the tower body 1. The tower cover 3 is mounted on the tower body 1 via a rotating shaft 2. Mounting ear plates 12 are respectively provided on the tower cover and the tower body opposite to the rotating shaft. Threaded holes are opened on the mounting ear plates, and bolts 13 are inserted into the threaded holes to fix the tower body and the tower cover.

[0021] The bottom of the tower body 1 is provided with an air inlet 4, the top of the tower cover 3 is provided with an air outlet 5, and the bottom of the tower body 1 is provided with a gas distributor 6 to uniformly introduce the mixed gas. Several layers of filter plates 7 are detachably installed inside the tower body 1. The mixed gas enters the tower body from the air inlet at the bottom of the tower body, and after being filtered and hydrogen extracted by the filter plates, the hydrogen is discharged from the air outlet at the top of the tower cover.

[0022] An installation groove 16 is provided on the inner wall of the tower body 1 at the connection with the filter plate 7. Frames 15 are provided at both ends of the filter plate 7. The frames 15 are mounted inside the tower body 1 via spring support assemblies within the installation groove 16. The spring support assembly includes a top plate 18 located within the installation groove 16, used to abut the frames 15. Several springs 19 are provided between the inner side of the top plate 18 and the inner wall of the installation groove to support the springs on the top plate. Hanging rings 17 are provided on the frames 15 for installing and removing the filter plate. When installing the filter plate, one end of the frame is pushed into the top plate within the installation groove, allowing the frame to extend into the groove. Then, the other side of the frame is pushed downwards until it reaches the installation groove. Under the action of the springs, both ends of the frame are pushed into the installation groove, thus installing the filter plate. When removing the filter plate, the hanging ring is pulled to one side to push the filter plate. Once the other side of the frame has moved out of the installation groove, the pulling ring can be pulled upwards to remove the filter plate.

[0023] The filter plate 7 has wire mesh 20 on its upper and lower sides to fix the adsorption material in the filter plate.

[0024] The filter plate 7 is configured from bottom to top as an activated carbon adsorption layer, a silica gel adsorption layer, a primary molecular sieve, and a secondary molecular sieve. The activated carbon adsorption layer strongly adsorbs CO2, CH2, N2, etc. in the mixed gas, the silica gel adsorption layer dehydrates the mixed gas, and the primary and secondary molecular sieves are used to decarbonize the mixed gas, thereby separating multiple components and achieving hydrogen extraction.

[0025] Heating wires 9 and cooling water pipes 8 are wound around the outer wall of the tower body 1. The heating wires are used to heat the adsorption tower, and the cooling water pipes are used to cool the adsorption tower. The heating wires and cooling water pipes are arranged alternately. An electric heater 10 connected to the heating wires 9 and a cold water tank 11 connected to the cooling water pipes 8 are installed on the outer wall of the tower body 1. A circulation pump 14 is installed on the pipe connecting the cooling water tank and the cooling water pipes. A temperature sensor 21 is installed inside the tower body 1 to collect temperature information inside the tower. A PLC controller is installed on the tower body 1. The output terminal of the temperature sensor is connected to the input terminal of the PLC controller. The output terminal of the PLC controller is connected to the input terminals of the electric heater and the circulation pump, respectively. When the temperature sensor detects that the temperature inside the tower is low, the PLC controller starts the electric heater to heat the tower body through the heating wires. When the temperature sensor detects that the temperature is too high, the PLC controller starts the circulation pump to pump cooling water into the cooling water pipes to cool the tower body, thereby realizing the control of the hydrogen extraction temperature of the adsorption tower.

[0026] In operation, the mixed gas enters the adsorption tower through the bottom inlet and is adsorbed by the filter plate inside the tower to extract hydrogen. The hydrogen is discharged from the top outlet. During the hydrogen extraction process, the PLC controller controls the electric heater and circulation pump based on the temperature information collected by the temperature sensor to keep the temperature inside the adsorption tower at a level that is conducive to hydrogen extraction, thereby ensuring the hydrogen extraction effect.

[0027] When the filter plates of the adsorption tower need to be replaced after a long period of use, open the tower cover and remove the filter plates one by one from top to bottom, and then install the new filter plates one by one from bottom to top to ensure the hydrogen extraction effect of the adsorption tower.

Claims

1. A hydrogen extraction adsorption tower, characterized in that: The tower includes a tower body (1), a tower cover (3) at the top of the tower body (1), an inlet (4) at the bottom of the tower body (1) for the mixed gas to enter, an outlet (5) at the top of the tower cover (3) for the hydrogen to exit, a gas distributor (6) at the bottom of the tower body (1), and several layers of filter plates (7) for filtering the mixed gas and extracting hydrogen are detachably installed inside the tower body (1); heating wires (9) for heating the adsorption tower and cooling water pipes (8) for cooling the adsorption tower are wound around the outer wall of the tower body (1). The heating wires and cooling water pipes are arranged in an alternating manner. An electric heater (10) connected to the heating wire (9) and a cold water tank (11) connected to the cooling water pipe (8) are provided on the outer wall of the tower body (1). A circulating pump (14) is provided on the pipe connecting the cooling water tank and the cooling water pipe. A temperature sensor (21) for collecting temperature information inside the tower body (1) is provided inside the tower body (1). A PLC controller is provided on the tower body (1). The output end of the temperature sensor is connected to the input end of the PLC controller. The output end of the PLC controller is connected to the input end of the electric heater and the circulating pump respectively.

2. The hydrogen extraction adsorption tower according to claim 1, characterized in that: An installation groove (16) is provided at the connection between the inner wall of the tower body (1) and the filter plate (7). The filter plate (7) has a frame (15) at both ends. The frame (15) is set in the tower body (1) through the spring support assembly in the installation groove (16).

3. The hydrogen extraction adsorption tower according to claim 2, characterized in that: The spring support assembly includes a top plate (18) disposed in the mounting groove (16) for abutting the frame (15), and a plurality of springs (19) for supporting the top plate are disposed between the inner side of the top plate (18) and the inner wall of the mounting groove.

4. The hydrogen extraction adsorption tower according to claim 2, characterized in that: The frame (15) is provided with a hanging ring (17) to facilitate the installation and removal of the filter plate.

5. A hydrogen extraction adsorption tower according to claim 1, characterized in that: The filter plate (7) is provided with wire mesh (20) on the upper and lower sides for fixing the adsorption material.

6. A hydrogen extraction adsorption tower according to claim 1, characterized in that: The tower cover (3) is mounted on the tower body (1) via a pivot (2). Mounting ear plates (12) are respectively provided on the tower cover and the tower body opposite to the pivot. Threaded holes are opened on the mounting ear plates, and bolts (13) for fixing the tower body and the tower cover are passed through the threaded holes.

7. A hydrogen extraction adsorption tower according to claim 1, characterized in that: The filter plate (7) is arranged from bottom to top as an activated carbon adsorption layer, a silica gel adsorption layer, a primary molecular sieve, and a secondary molecular sieve.

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