An adsorption-type hydrogen drying device
By designing a layered dehydration component and a spring-pressing component, the problem of limited adsorption capacity of the adsorbent is solved, enabling deep drying and efficient purification of hydrogen. This meets the hydrogen purity requirements of fuel cells and fine chemicals, and ensures the stable operation of downstream processes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU LINUO MASCH CO LTD
- Filing Date
- 2025-09-05
- Publication Date
- 2026-07-31
AI Technical Summary
The adsorbent has a limited capacity to adsorb moisture, and single-tower adsorption can usually only last for a few hours. Continuous operation must be achieved by switching between dual or multiple towers. This leads to instantaneous pressure fluctuations or trace amounts of water during frequent switching, reducing the purity of the dried hydrogen. This fails to meet the stringent requirements for hydrogen dryness in applications such as fuel cells and precision chemicals, and affects the operational reliability of downstream processes.
The system employs a layered dehydration assembly and a spring-pressing assembly. The layered dehydration assembly includes a flow guide hood, a flow guide pipe, a high-capacity pretreatment adsorption layer, and a deep-drying adsorption layer. Through the layered design of primary pretreatment and secondary deep drying, combined with the elastic pressing of the spring-pressing assembly, the adsorption layers are ensured to fit tightly, preventing gas from flowing around and achieving deep drying of hydrogen.
It significantly extends the service life of the adsorption tower, improves the adsorption efficiency of moisture in hydrogen, ensures the uniformity and thoroughness of the drying effect, meets the stringent requirements of hydrogen dryness for fuel cells and fine chemicals, and improves the operational reliability of downstream processes.
Smart Images
Figure CN224573510U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of hydrogen drying devices, specifically an adsorption-type hydrogen drying device. Background Technology
[0002] An adsorption-type hydrogen dryer is an industrial device that removes moisture from hydrogen and achieves deep drying and purification of hydrogen based on the adsorption properties of solid adsorbents. Its core function is to reduce the water content in hydrogen to an extremely low level, ensuring that hydrogen maintains high purity during storage, transportation, or subsequent processes, and avoiding equipment corrosion, performance degradation, or safety hazards caused by moisture.
[0003] However, the adsorbent has a limited capacity to adsorb moisture, and single-tower adsorption can usually only last for a few hours. Continuous operation must be achieved by switching between dual or multiple towers. During frequent switching, the occurrence of instantaneous pressure fluctuations or trace amounts of water can increase, causing some incompletely adsorbed moisture to enter subsequent processes with the hydrogen. This reduces the purity of the dried hydrogen, failing to meet the stringent requirements for hydrogen dryness in applications such as fuel cells and fine chemicals, and consequently affecting the operational reliability of downstream processes. Therefore, we propose an adsorption-type hydrogen drying device. Utility Model Content
[0004] The purpose of this invention is to provide an adsorption-type hydrogen drying device to solve the problems mentioned in the background art, such as the limited adsorption capacity of the adsorbent for moisture, the fact that single-tower adsorption can usually only last for a few hours, the need to switch between dual or multiple towers to achieve continuous operation, and the increased occurrence of instantaneous pressure fluctuations or trace amounts of water during frequent switching, resulting in some incompletely adsorbed moisture entering subsequent processes with the hydrogen, reducing the purity of the dried hydrogen, failing to meet the requirements of fuel cells, fine chemicals and other scenarios with strict requirements for hydrogen dryness, and thus affecting the operational reliability of downstream processes.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an adsorption-type hydrogen drying device, comprising an adsorption tower, a cylinder cover fixedly installed on the top of the adsorption tower, an inlet fixedly installed on the top of the cylinder cover, two material exchange ports fixedly installed on the outside of the adsorption tower, a layered dehydration component and a spring compression component installed inside the adsorption tower, the layered dehydration component extending the service life of the adsorption tower by guiding hydrogen to pass through sequentially for layered dehydration and drying, and the spring compression component ensuring tight adhesion of the adsorption layers by elastically compressing the adsorption layers.
[0006] The stratified dehydration component includes a flow guide hood, which is fixedly installed at the bottom of the cylinder cover. A flow guide pipe is fixedly installed at the bottom of the flow guide hood. A first steel wire frame is fixedly installed on the inner wall of the adsorption tower. A high-capacity pretreatment adsorption layer is set inside the first steel wire frame.
[0007] The first wire frame and the high-capacity pretreatment adsorption layer are both located below the flow guide shroud. A perforated baffle is fixedly installed inside the adsorption tower, and a sealing ring is fixedly installed outside the perforated baffle. The sealing ring is located in an annular groove inside the adsorption tower. The perforated baffle is located below the first wire frame. A second wire frame is fixedly installed on the inner wall of the adsorption tower. A deep drying adsorption layer is set inside the second wire frame. The second wire frame is located below the perforated baffle.
[0008] The first and second wire frames are equipped with quartz sand pads. The top of the quartz sand pad inside the first wire frame is in contact with the high-capacity pretreatment adsorption layer, and the top of the quartz sand pad inside the second wire frame is in contact with the deep drying adsorption layer. The two material exchange ports correspond to the second and first wire frames, respectively.
[0009] The spring clamping assembly includes a crossbeam, which is located between the guide pipe and the first wire frame. The crossbeam is fixedly installed inside the adsorption tower. The adsorption tower is threaded with bolts through threaded holes inside it. The bolts are connected to a connecting frame through external threads. A high-temperature resistant spring is fixedly installed at the bottom of the connecting frame, and a clamping frame is fixedly installed at the bottom of the high-temperature resistant spring.
[0010] The clamping frame is externally fixedly equipped with a limiting frame, and both the limiting frame and the clamping frame are externally fixedly equipped with sealing gaskets. The limiting frame, the clamping frame, and the sealing gaskets are all slidably connected on the inner wall of the adsorption tower. The adsorption tower is internally rotatably connected with a threaded rod, and the adsorption tower is internally fixedly equipped with a limiting rod. The limiting frame is slidably connected to the limiting rod through a sliding hole provided inside it, and the limiting frame is threadedly connected to the threaded rod through a threaded hole provided inside it.
[0011] This utility model has at least the following beneficial effects: The elastic pressure generated by the high-temperature resistant spring in the spring clamping assembly can be stably transmitted to the clamping frame, ensuring a tight fit of the high-capacity pretreatment adsorption layer within the first steel wire frame below. This prevents gaps caused by loosening of the adsorption layer, significantly improving the adsorption efficiency of moisture in hydrogen. Simultaneously, the clamping frame is restricted to vertical movement only by cooperating with the limiting rod fixed inside the adsorption tower through the limiting frame. The rotating threaded rod can also drive the limiting frame to move synchronously. This dual positioning structure ensures precise positioning of the clamping frame, preventing deviations from affecting the clamping effect of the adsorption layer or the gas flow path. The layered dehydration assembly adopts a layered design of primary pretreatment and secondary deep drying. The high-capacity pretreatment adsorption layer first adsorbs most of the moisture in the hydrogen, while the deep drying adsorption layer adsorbs the remaining trace moisture. The two stages work together to achieve deep drying of hydrogen, ensuring the final drying effect meets standards. Furthermore, the perforated baffle fixed inside the adsorption tower is equipped with a sealing ring embedded in the annular groove on the inner wall of the adsorption tower. This forces hydrogen to flow downwards only through the holes in the perforated baffle, preventing gas from bypassing the adsorption layer and causing some hydrogen to be discharged directly, ensuring uniform and thorough drying. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the exploded three-dimensional structure of this utility model; Figure 3 This is a three-dimensional exploded view of the layered dehydration component of this utility model; Figure 4 This is a schematic diagram of the three-dimensional structure of the three-dimensional spring clamping assembly of this utility model.
[0013] In the diagram: 1. Adsorption tower; 2. Feed exchange port; 3. Cylinder cover; 4. Air inlet; 5. Layered dehydration assembly; 51. Flow guide hood; 52. Flow guide pipe; 53. High-capacity pretreatment adsorption layer; 54. First wire frame; 55. Perforated baffle; 56. Sealing ring; 57. Deep drying adsorption layer; 58. Second wire frame; 59. Quartz sand pad; 6. Spring clamping assembly; 61. Limiting frame; 62. Sealing gasket; 63. Threaded rod; 64. Connecting frame; 65. Crossbeam; 66. Bolt; 67. High-temperature resistant spring; 68. Limiting rod; 69. Clamping frame. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see Figures 1 to 4This utility model provides a technical solution: an adsorption-type hydrogen drying device, including an adsorption tower 1, a cylinder cover 3 fixedly installed on the top of the adsorption tower 1, an air inlet 4 fixedly installed on the top of the cylinder cover 3, two material exchange ports 2 fixedly installed on the outside of the adsorption tower 1, a layered dehydration component 5 and a spring compression component 6 are provided inside the adsorption tower 1. The layered dehydration component 5 extends the service life of the adsorption tower 1 by guiding hydrogen to pass through sequentially for layered dehydration and drying, and the spring compression component 6 makes the adsorption layer tightly adhered by elastically compressing the adsorption layer.
[0016] The stratified dehydration assembly 5 includes a flow guide shroud 51, which is fixedly installed at the bottom of the cylinder cover 3. A flow guide pipe 52 is fixedly installed at the bottom of the flow guide shroud 51. A first wire frame 54 is fixedly installed on the inner wall of the adsorption tower 1. A high-capacity pretreatment adsorption layer 53 is disposed inside the first wire frame 54. Both the first wire frame 54 and the high-capacity pretreatment adsorption layer 53 are located below the flow guide shroud 51. A perforated baffle 55 is fixedly installed inside the adsorption tower 1. A [missing information - likely a device or component] is fixedly installed outside the perforated baffle 55. A sealing ring 56 is located within an annular groove inside the adsorption tower 1. A perforated baffle 55 is located below the first wire frame 54. A second wire frame 58 is fixedly installed on the inner wall of the adsorption tower 1. A deep drying adsorption layer 57 is provided inside the second wire frame 58. The second wire frame 58 is located below the perforated baffle 55. Both the second wire frame 58 and the first wire frame 54 have quartz sand pads 59 inside. The top of the quartz sand pad 59 inside the first wire frame 54... The first wire frame 54 is in contact with the high-capacity pretreatment adsorption layer 53. The top of the quartz sand pad 59 inside the second wire frame 58 is in contact with the deep drying adsorption layer 57. The two material exchange ports 2 correspond to the second wire frame 58 and the first wire frame 54, respectively. Hydrogen enters the first wire frame 54 through the spring clamping assembly 6 and adsorbs most of the moisture through the high-capacity pretreatment adsorption layer 53. The quartz sand pad 59 inside the first wire frame 54 provides support to prevent deformation. After the first stage of drying, the hydrogen is drawn down through the first wire frame 54. The adsorption tower 1 has a perforated baffle 55 inside, and its outer sealing ring 56 is embedded in the annular groove of the adsorption tower 1 to prevent flow around. Hydrogen gas passes through the perforated baffle 55 and enters the second steel wire frame 58 on the inner wall of the adsorption tower 1. It is then subjected to the adsorption of trace amounts of moisture by the internal deep drying adsorption layer 57, which is supported by the quartz sand pad 59 inside the second steel wire frame 58. After the high-capacity pretreatment adsorption layer 53 or the deep drying adsorption layer 57 is saturated, it is replaced through the two material exchange ports 2 outside the adsorption tower 1. The dried hydrogen gas is discharged from the side pipe valve of the adsorption tower 1 below the second steel wire frame 58.
[0017] The spring clamping assembly 6 includes a crossbeam 65, which is located between the guide pipe 52 and the first wire frame 54. The crossbeam 65 is fixedly installed inside the adsorption tower 1. The adsorption tower 1 is threadedly connected to a bolt 66 through a threaded hole inside the crossbeam 65. A connecting frame 64 is threadedly connected to the outside of the bolt 66. A high-temperature resistant spring 67 is fixedly installed at the bottom of the connecting frame 64. A clamping frame 69 is fixedly installed at the bottom of the high-temperature resistant spring 67. A limit frame 61 is fixedly installed on the outside of the clamping frame 69. Sealing gaskets 62 are fixedly installed on the outside of both the limit frame 61 and the clamping frame 69. The limit frame 61, the clamping frame 69, and the sealing gaskets 62 are all slidably connected on the inner wall of the adsorption tower 1. A threaded rod 63 is rotatably connected inside the adsorption tower 1. A limit rod 68 is fixedly installed inside the adsorption tower 1. The limit frame 61 is connected to the inside of the limit frame 64 through a threaded hole. The sliding hole is slidably connected to the limiting rod 68. The limiting frame 61 is threadedly connected to the threaded rod 63 through the threaded hole inside. The dried hydrogen enters through the gas inlet 4 on the cylinder cover 3 of the adsorption tower 1 and is guided to the flow guide shroud 51 by the cylinder cover 3. After being collected by the flow guide shroud 51, it is led to the spring clamping assembly 6 inside the adsorption tower 1 through the flow guide pipe 52. The assembly is supported by the crossbeam 65 inside the adsorption tower 1. The crossbeam 65 and the connecting frame 64 are fixed by bolts 66. The high temperature resistant spring 67 under the connecting frame 64 compresses and transmits pressure to the clamping frame 69. The limiting frame 61 is vertically fixed and prevented from deviating under the restriction of the limiting rod 68 inside the adsorption tower 1. The threaded rod 63 rotates and the limiting frame 61 is positioned to assist in positioning. Finally, the clamping frame 69 and the outer sealing gasket 62 of the limiting frame 61 are in contact with the inner wall of the adsorption tower 1 to prevent leakage. Pressure is also applied to the high-capacity pretreatment adsorption layer 53 inside the first steel wire frame 54 to ensure adhesion and improve efficiency.
[0018] The hydrogen gas to be dried first enters the device through the inlet 4 fixedly installed on the top cover 3 of the adsorption tower 1. After being guided by the cover 3, it directly enters the flow guide hood 51 fixedly installed at the bottom. The flow guide hood 51 uses its own arc structure to initially collect the hydrogen gas and prevent the airflow from spreading. Then, the hydrogen gas is precisely guided to the spring compression assembly 6 area inside the adsorption tower 1 through the flow guide pipe 52 fixedly installed at the bottom of the flow guide hood 51, in preparation for subsequent stratified drying.
[0019] First, the crossbeam 65 fixedly installed inside the adsorption tower 1 provides support. The operator fixes the crossbeam 65 to the connecting frame 64 with bolts 66. Here, the high-temperature resistant spring 67 fixedly installed at the bottom of the connecting frame 64 is in a compressed state, which generates elastic deformation and transmits pressure downward to the clamping frame 69 fixedly installed at the bottom. The limiting frame 61 fixedly installed outside the clamping frame 69, under the restriction of the limiting rod 68 fixedly installed inside the adsorption tower 1, ensures that the clamping frame 69 moves only in the vertical direction and avoids deviation. At the same time, the threaded rod 63 rotatably connected inside the adsorption tower 1 is rotated. The threaded rod 63 drives the limiting frame 61 to move synchronously through the threaded hole inside the limiting frame 61, further assisting the positioning of the clamping frame 69. Finally, the sealing gasket 62 fixedly installed outside the clamping frame 69 and the limiting frame 61 fits tightly against the inner wall of the adsorption tower 1, which not only prevents hydrogen leakage, but also makes the clamping frame 69 apply stable pressure to the high-capacity pretreatment adsorption layer 53 inside the first steel wire frame 54 below, ensuring that the high-capacity pretreatment adsorption layer 53 fits tightly and improving the adsorption efficiency.
[0020] After passing through the spring-compression assembly 6, the hydrogen gas first enters the interior of the first wire frame 54, where it comes into full contact with the high-capacity pretreatment adsorption layer 53. The high-capacity pretreatment adsorption layer 53 adsorbs most of the moisture in the hydrogen gas. Simultaneously, the quartz sand pad 59 inside the first wire frame 54 supports the high-capacity pretreatment adsorption layer 53, preventing deformation due to airflow impact. The hydrogen gas, having completed the first stage of drying, then passes through a perforated baffle 55 fixedly installed inside the adsorption tower 1 below the first wire frame 54. A sealing ring 56 fixedly installed on the outside of the perforated baffle 55 is embedded in an annular groove inside the adsorption tower 1, ensuring that the hydrogen gas flows downwards only through the holes in the perforated baffle 55, preventing circumferential flow and incomplete drying. After passing through the perforated partition 55, the hydrogen gas enters the interior of the second wire frame 58 fixedly installed on the inner wall of the adsorption tower 1, and comes into contact with the deep drying adsorption layer 57 set inside the second wire frame 58. The deep drying adsorption layer 57 adsorbs the remaining trace moisture in the hydrogen gas. Similarly, the quartz sand pad 59 set inside the second wire frame 58 provides support and protection for the deep drying adsorption layer 57. When the high-capacity pretreatment adsorption layer 53 or the deep drying adsorption layer 57 is saturated, it can be replaced through the two material replacement ports 2 fixedly installed on the outside of the adsorption tower 1 without disassembling the entire device. The hydrogen gas that has completed two stages of drying is discharged from the pipe valve on the side of the adsorption tower 1 below the second wire frame 58, and finally dry hydrogen gas is obtained.
[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A hydrogen adsorption drying device of the adsorption type comprising an adsorption tower, characterized in that: The top of the adsorption tower is fixedly equipped with a cylinder cover, and the top of the cylinder cover is fixedly equipped with an air inlet. Two material replacement ports are fixedly installed on the outside of the adsorption tower. The adsorption tower is equipped with a layered dehydration component and a spring compression component. The layered dehydration component extends the service life of the adsorption tower by guiding hydrogen gas through it sequentially for layered dehydration and drying. The spring compression component ensures that the adsorption layers are tightly adhered by elastically compressing the adsorption layers.
2. The adsorption-type hydrogen gas drying device according to claim 1, characterized by: The stratified dehydration assembly includes a flow guide hood, which is fixedly installed at the bottom of the cylinder cover. A flow guide pipe is fixedly installed at the bottom of the flow guide hood. A first steel wire frame is fixedly installed on the inner wall of the adsorption tower. A high-capacity pretreatment adsorption layer is provided inside the first steel wire frame.
3. The adsorption hydrogen drying device according to claim 2, characterized by: The first wire frame and the high-capacity pretreatment adsorption layer are both located below the flow guide shroud. A perforated baffle is fixedly installed inside the adsorption tower, and a sealing ring is fixedly installed outside the perforated baffle. The sealing ring is located in an annular groove inside the adsorption tower. The perforated baffle is located below the first wire frame. A second wire frame is fixedly installed on the inner wall of the adsorption tower. A deep drying adsorption layer is provided inside the second wire frame. The second wire frame is located below the perforated baffle.
4. The adsorption-type hydrogen gas drying device according to claim 3, characterized by: Both the second wire frame and the first wire frame have a quartz sand pad inside. The top of the quartz sand pad inside the first wire frame is in contact with the high-capacity pretreatment adsorption layer, and the top of the quartz sand pad inside the second wire frame is in contact with the deep drying adsorption layer. The two material exchange ports correspond to the second wire frame and the first wire frame, respectively.
5. The adsorption hydrogen drying device according to claim 4, characterized by: The spring clamping assembly includes a crossbeam, which is located between the guide pipe and the first steel wire frame. The crossbeam is fixedly installed inside the adsorption tower. The adsorption tower is threaded with bolts through threaded holes inside. A connecting frame is threaded to the outside of the bolts. A high-temperature resistant spring is fixedly installed at the bottom of the connecting frame, and a clamping frame is fixedly installed at the bottom of the high-temperature resistant spring.
6. The adsorption hydrogen drying device according to claim 5, characterized by: A limiting frame is fixedly installed on the outside of the clamping frame. Sealing gaskets are fixedly installed on the outside of both the limiting frame and the clamping frame. The limiting frame, the clamping frame, and the sealing gaskets are all slidably connected on the inner wall of the adsorption tower. A threaded rod is rotatably connected inside the adsorption tower. A limiting rod is fixedly installed inside the adsorption tower. The limiting frame is slidably connected to the limiting rod through a sliding hole provided inside it. The limiting frame is threadedly connected to the threaded rod through a threaded hole provided inside it.