Hydrogen purification device for producing hydrogen from methanol

Abstract

The hydrogen purification device comprises a purification tank, a gas inlet pipe and an exhaust pipe are arranged on the purification tank, the outlet end of the gas inlet pipe is inserted into the purification tank, and the gas inlet pipe and the purification tank are coaxially arranged; a first filtering module is further arranged in the purification tank, the first filtering module is of an annular structure, the first filtering module is arranged in the purification tank, and the air inlet pipe and the first filtering module are coaxially arranged; the outer side of the first filtering module is coaxially sleeved with a second filtering module, and the outer side of the second filtering module is coaxially sleeved with a third filtering module; the first filtering module is filled with a dehydrating agent, and the second filtering module is filled with activated carbon; the third filtering module is filled with a molecular sieve; according to the hydrogen purification tank, airflow is radially diffused in the purification tank and enters each filtering module through each filtering module arranged in a concentric circle structure, so that the contact area of tail gas and various reagents is increased, the inlet flow of the gas inlet pipe is increased, and the purification efficiency of hydrogen is improved.

Description

Technical Field

[0001] This application relates to the field of new energy equipment technology, specifically to a hydrogen purification device for methanol-to-hydrogen production. Background Technology

[0002] Methanol-to-hydrogen is the hydrogen production technology adopted in my country. In existing technologies, the hydrogen obtained from methanol-to-hydrogen still contains impurities such as water vapor, carbon dioxide, and a small amount of methanol vapor. In order to improve the quality of hydrogen, existing technologies generally use various adsorbents to remove various impurity gases. However, due to the limited flow area at the inlet end, the purification efficiency of the purification device is low. Utility Model Content

[0003] The main objective of this application is to provide a hydrogen purification device for methanol-to-hydrogen production, which aims to overcome the shortcomings of low purification efficiency in the prior art.

[0004] This application achieves the above objectives through the following technical solutions:

[0005] A hydrogen purification apparatus for methanol-to-hydrogen production includes a purification tank;

[0006] An air inlet pipe, the outlet end of which is inserted into the purification tank, and the air inlet pipe is coaxially arranged with the purification tank;

[0007] An exhaust pipe is connected to the purification tank and is used to discharge purified hydrogen.

[0008] A first filter module, having a ring-shaped structure, is disposed within the purification tank, with the air inlet pipe coaxially aligned with the first filter module. A second filter module is coaxially sleeved around the outside of the first filter module along the radial direction of the purification tank, and a third filter module is coaxially sleeved around the outside of the second filter module. The first filter module is filled with a dehydrating agent, the second filter module is filled with activated carbon, and the third filter module is filled with molecular sieves.

[0009] Optionally, the purification tank includes a sealed tank body and a sealing cap, the sealing cap being provided with a connector, the air inlet pipe being provided with a blocking block, and the blocking block being threadedly connected to the connector.

[0010] Optionally, a plurality of sealing ring grooves are provided on the bottom surface of the tank and the sealing cover, and the first filter module, the second filter module and the third filter module are respectively inserted into each of the sealing ring grooves.

[0011] Optionally, a plurality of sealing rings are also embedded in the inner wall of the sealing ring groove, and each of the sealing rings is respectively attached to the first filter module, the second filter module and the third filter module.

[0012] Optionally, a buffer cavity is provided between the air intake pipe and the first filter module, between the first filter module and the second filter module, and between the second filter module and the third filter module; a temporary storage cavity is provided between the third filter module and the purification tank; and the exhaust pipe is connected to the temporary storage cavity.

[0013] Optionally, along the axis of the intake pipe, a plurality of layers of exhaust holes are provided on the outer peripheral surface of the intake pipe, and the exhaust holes in the same layer are arranged around the axis of the intake pipe.

[0014] Optionally, the first filter module, the second filter module, and the third filter module all include a ring-shaped housing. Along the radial direction of the housing, a support mesh is provided on the inner and outer walls of the housing, and a filter mesh is attached to the support mesh.

[0015] Optionally, the enclosure includes a top plate and a bottom plate, and a plurality of support rods are provided between the top plate and the bottom plate, with both ends of each support rod connected to the top plate and the bottom plate respectively.

[0016] Optionally, along the radial direction of the housing, several layers of adjusting baffles are provided inside the housing. Each adjusting baffle is arc-shaped, and a flow gap is provided between each adjusting baffle in the same layer to allow airflow. The flow gaps between adjacent layers of adjusting baffles are staggered.

[0017] Optionally, both the top plate and the bottom plate are provided with a plurality of arc-shaped mounting plates, and the two ends of each of the adjusting baffles are respectively attached and connected to each of the mounting plates.

[0018] Compared with the prior art, this application has the following beneficial effects:

[0019] This application includes a purification tank, which is provided with an air inlet pipe and an exhaust pipe, wherein the outlet end of the air inlet pipe is inserted into the purification tank and is coaxially arranged with the purification tank; a first filter module is also provided inside the purification tank, the first filter module has a ring structure, the first filter module is disposed inside the purification tank, and the air inlet pipe is coaxially arranged with the first filter module; along the radial direction of the purification tank, a second filter module is coaxially sleeved on the outside of the first filter module, and a third filter module is coaxially sleeved on the outside of the second filter module; the first filter module is filled with a dehydrating agent, the second filter module is filled with activated carbon, and the third filter module is filled with molecular sieves.

[0020] In use, the exhaust gas is pressurized and enters the purification tank through the intake pipe. Then, the exhaust gas enters the first filter module in a radial direction. After the moisture is removed, it enters the second filter module 5 and the third filter module in sequence to remove impurities such as carbon dioxide and methanol in the exhaust gas. Finally, it is discharged through the exhaust pipe.

[0021] Compared with the prior art, this application uses concentric circle structure to set each filter module so that the airflow diffuses radially in the purification tank and enters each filter module, thereby maximizing the contact area between the exhaust gas and various reagents, thereby increasing the inlet flow of the air inlet pipe and improving the purification efficiency of hydrogen.

[0022] Secondly, this application can perform targeted separation of different components through multiple filtration modules, thereby improving the cleaning and separation quality. Attached Figure Description

[0023] Figure 1 A schematic diagram of a hydrogen purification device for methanol-to-hydrogen production provided in Embodiment 1 of this application;

[0024] Figure 2 A schematic diagram of a hydrogen purification device for methanol-to-hydrogen production provided in Embodiment 1 of this application;

[0025] Figure 3 A cross-sectional view of a hydrogen purification apparatus for methanol-to-hydrogen production provided in Embodiment 1 of this application;

[0026] Figure 4 This is an exploded view of the second filter module;

[0027] Figure 5 This is a cross-sectional view of the second filter module along the radial direction;

[0028] Reference numerals: 1-Purification tank, 2-Inlet pipe, 3-Exhaust pipe, 4-First filter module, 5-Second filter module, 6-Third filter module, 7-Dehydrating agent, 8-Activated carbon, 9-Molecular sieve, 10-Sealing block, 11-Sealing ring groove, 12-Sealing ring, 13-Buffer chamber, 14-Temporary storage chamber, 15-Exhaust port, 16-Box body, 17-Support mesh, 18-Filter mesh cloth, 101-Tank body, 102-Sealing cover, 103-Insert pipe, 1601-Top plate, 1602-Bottom plate, 1603-Support rod, 1604-Adjusting baffle, 1605-Mounting plate.

[0029] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] 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.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] Implementation Method 1

[0035] Reference Figures 1 to 5 This embodiment is an optional embodiment of this application, which discloses a hydrogen purification device for methanol-to-hydrogen production, including a purification tank 1 and an inlet pipe 2.

[0036] The purification tank 1 includes a tank body 101 and a sealing cap 102. The tank body 101 and the sealing cap 102 are tightly connected. In order to improve the sealing performance, a sealing ring can also be added between the tank body 101 and the sealing cap 102.

[0037] The tank body 101 is provided with a coaxial insertion pipe 103. A sealing block 10 is integrally connected to the air inlet pipe 2. One end of the air inlet pipe 2 is connected to an external hydrogen gas source, and the other end passes through the insertion pipe 103 and is inserted into the tank body 101. At the same time, the sealing block 10 is threadedly connected to the insertion pipe 103, which not only has good sealing performance, but also facilitates the disassembly and maintenance of the equipment.

[0038] Along the axis of the air inlet pipe 2, a number of layers of exhaust holes 15 are provided in a section of the air inlet pipe 2 located inside the tank body 101. Each of the exhaust holes 15 in the same layer is arranged around the axis of the air inlet pipe 2, and the end of the air inlet pipe 2 inserted into the tank body 101 is open.

[0039] The multi-layered exhaust port 15 allows hydrogen to be released at different heights, which helps to achieve uniform distribution of hydrogen and thus improves purification efficiency.

[0040] The purification tank 1 is further provided with a first filter module 4, a second filter module 5, and a third filter module 6. The first filter module 4, the second filter module 5, and the third filter module 6 are all arranged in a ring structure. The first filter module 4 has the smallest outer diameter, the second filter module 5 has the next smallest outer diameter, and the third filter module 6 has the largest outer diameter. During installation, the first filter module 4 is located on the innermost side and is coaxially arranged with the air inlet pipe 2. Along the radial direction of the purification tank 1, the second filter module 5 is coaxially sleeved on the outside of the first filter module 4, and the third filter module 6 is coaxially sleeved on the outside of the second filter module 5; that is, the first filter module 4, the second filter module 5, and the third filter module 6 are arranged in a concentric circle structure inside the purification tank 1.

[0041] Furthermore, a buffer chamber 13 is provided between the air intake pipe 2 and the first filter module, between the first filter module and the second filter module, and between the second filter module and the third filter module. A temporary storage chamber 14 is provided between the third filter module and the purification tank 1. An exhaust pipe 3 is also provided on the purification tank 1. The inlet end of the exhaust pipe 3 is inserted into the purification tank 1 and communicates with the temporary storage chamber 14.

[0042] The buffer chamber 13 allows for better regulation of the airflow within the purification tank 1, which helps improve purification efficiency.

[0043] Furthermore, the first filter module 4, the second filter module 5, and the third filter module 6 all include a housing 16 with the same structure, the difference being the size of the housing.

[0044] The housing 16 includes a top plate 1601 and a bottom plate 1602. The top plate 1601 and the bottom plate 1602 are identical annular plates. A plurality of support rods 1603 are provided between the top plate 1601 and the bottom plate 1602. Each support rod 1603 is divided into two groups. One group is evenly arranged along the outer edge of the housing 16, and the other group is evenly arranged along the inner edge of the housing 16. The two ends of each support rod 1603 are respectively connected to the top plate 1601 and the bottom plate 1602.

[0045] Along the radial direction of the housing 16, a support mesh 17 is provided on both the inner and outer walls of the housing 16. The support mesh 17 is preferably a wire mesh. Both support rings are annular structures and are respectively connected to the support rods 1603 on the inner sides. A filter mesh 18 is attached to the support mesh 17. The filter mesh 18 is preferably made of non-woven fabric or synthetic fiber.

[0046] The first filter module 4 is filled with a dehydrating agent 7, the second filter module 5 is filled with activated carbon 8, and the third filter module 6 is filled with a molecular sieve 9.

[0047] The above-mentioned structural design not only simplifies the structure of the housing 16, but also provides support for the filter cloth 18 through the support net 17, ensuring that it is always in a taut state. The filter cloth 18 can not only filter large particles of dust and impurities, but also confine various adsorbents within the housing 16 while ensuring air permeability, thus ensuring the structural integrity of each filter module.

[0048] Furthermore, several sets of adjusting baffles 1604 are provided inside each of the housings 16. Each adjusting baffle 1604 has an arc-shaped structure. Preferably, each set includes 3-4 baffles. The adjusting baffles 1604 are arranged sequentially along the radial direction of the housing 16. The adjusting baffles 1604 in the same set form a circle. A flow gap for airflow is provided between any two adjacent adjusting baffles 1604. Any two adjacent sets of adjusting baffles 1604 are staggered to ensure that the flow gaps of any two adjacent layers of adjusting baffles 1604 are staggered, thereby forming a W-shaped airflow path in the housing 16. This prolongs the flow path and residence time of the airflow in each filter module, which is beneficial to improving the purification effect.

[0049] Both the top plate 1601 and the bottom plate 1602 are provided with a plurality of arc-shaped mounting plates 1605. The mounting plates 1605 on the upper and lower sides are paired one by one, and the upper and lower ends of the corresponding adjustment baffles 1604 are connected to each other.

[0050] Furthermore, a plurality of sealing ring 12 grooves 11 are provided at the bottom of the tank body 101 and on the sealing cover 102. A plurality of sealing rings 12 are also embedded in the inner wall of each sealing ring 12 groove 11. The first filter module, the second filter module and the third filter module are respectively inserted into each sealing ring 12 groove 11, and each sealing ring 12 is respectively attached to the first filter module, the second filter module and the third filter module.

[0051] In use, the exhaust gas is pressurized and enters the purification tank through the intake pipe. Then, the exhaust gas enters the first filter module in a radial direction. After the moisture is removed, it enters the second filter module 5 and the third filter module in sequence to remove impurities such as carbon dioxide and methanol in the exhaust gas. Finally, it is discharged through the exhaust pipe.

[0052] Compared with the prior art, this application uses concentric circle structure to set each filter module so that the airflow diffuses radially in the purification tank and enters each filter module, thereby maximizing the contact area between the exhaust gas and various reagents, thereby increasing the inlet flow of the air inlet pipe and improving the purification efficiency of hydrogen.

[0053] Secondly, this application can perform targeted separation of different components through multiple filtration modules, thereby improving the cleaning and separation quality.

[0054] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A hydrogen purification apparatus for methanol-to-hydrogen production, characterized in that, Including purification tank (1); An air inlet pipe (2) is inserted into the purification tank (1) at its outlet end. The air inlet pipe (2) is coaxially arranged with the purification tank (1). Exhaust pipe (3), which is connected to the purification tank (1), is used to discharge purified hydrogen. The first filter module (4) has a ring structure and is disposed inside the purification tank (1). The air inlet pipe (2) is coaxially disposed with the first filter module (4). Along the radial direction of the purification tank (1), a second filter module (5) is coaxially sleeved on the outside of the first filter module (4), and a third filter module (6) is coaxially sleeved on the outside of the second filter module (5). The first filter module (4) is filled with a dehydrating agent (7), the second filter module (5) is filled with activated carbon (8), and the third filter module (6) is filled with molecular sieve (9). The first filter module (4), the second filter module (5) and the third filter module (6) all include a box (16) with an annular structure. Along the radial direction of the box (16), a support net (17) is provided on the inner wall and the outer wall of the box (16), and a filter cloth (18) is attached to the support net (17). The housing (16) includes a top plate (1601) and a bottom plate (1602). A plurality of support rods (1603) are provided between the top plate (1601) and the bottom plate (1602). The two ends of each support rod (1603) are connected to the top plate (1601) and the bottom plate (1602) respectively.

2. The hydrogen purification apparatus for methanol-to-hydrogen production according to claim 1, characterized in that, The purification tank (1) includes a sealed tank body (101) and a sealing cap (102) connected together. A connector (103) is provided on the sealing cap (102), and a blocking block (10) is provided on the air inlet pipe (2). The blocking block (10) is threadedly connected to the connector (103).

3. A hydrogen purification apparatus for methanol-to-hydrogen production according to claim 2, characterized in that, The bottom surface of the tank body (101) and the sealing cover (102) are provided with a plurality of sealing ring grooves (11), and the first filter module (4), the second filter module (5) and the third filter module (6) are respectively inserted into each of the sealing ring grooves (11).

4. A hydrogen purification apparatus for methanol-to-hydrogen production according to claim 3, characterized in that, The inner wall of the sealing ring groove (11) is also provided with a plurality of sealing rings (12), and each of the sealing rings (12) is respectively attached to the first filter module (4), the second filter module (5) and the third filter module (6).

5. A hydrogen purification apparatus for methanol-to-hydrogen production according to claim 1, characterized in that, A buffer chamber (13) is provided between the air intake pipe (2) and the first filter module (4), between the first filter module (4) and the second filter module (5), and between the second filter module (5) and the third filter module (6). A temporary storage chamber (14) is provided between the third filter module and the purification tank (1). The exhaust pipe (3) is connected to the temporary storage chamber (14).

6. A hydrogen purification apparatus for methanol-to-hydrogen production according to claim 1, characterized in that, Along the axis of the intake pipe (2), a plurality of layers of exhaust holes (15) are provided on the outer circumferential surface of the intake pipe (2), and each of the exhaust holes (15) in the same layer is arranged around the axis of the intake pipe (2).

7. A hydrogen purification apparatus for methanol-to-hydrogen production according to claim 1, characterized in that, Along the radial direction of the box (16), a number of layers of adjusting baffles (1604) are provided inside the box (16). Each adjusting baffle (1604) is arc-shaped. A flow gap for airflow is provided between each adjusting baffle (1604) in the same layer. The flow gaps between adjacent layers of adjusting baffles (1604) are staggered.

8. A hydrogen purification apparatus for methanol-to-hydrogen production according to claim 7, characterized in that, Both the top plate (1601) and the bottom plate (1602) are provided with a plurality of arc-shaped mounting plates (1605), and the two ends of each adjusting baffle (1604) are respectively attached and connected to each mounting plate (1605).

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