Hydrogen recovery and enrichment device

Abstract

The utility model relates to the field of hydrogen recovery devices, and discloses a hydrogen recovery and enrichment device which comprises a bottom plate, a separation box, an adsorption tower and a gas storage tank are sequentially and fixedly connected to the top of the bottom plate from right to left, a filter box is fixedly connected to the right portion of the separation box, and a filter assembly and an installation assembly are arranged in the filter box. A separation assembly is arranged in the separation box, an adsorption assembly is arranged in the adsorption tower, the filter assembly comprises a sealing ring, the sealing ring is arranged in the filter box, a filter screen, a glass fiber filter element and silica gel are sequentially and fixedly connected to the inner wall of the sealing ring from right to left, and two positioning holes are formed in the outer wall of the sealing ring. According to the hydrogen recovery device disclosed by the utility model, through the arrangement of the filtering assembly, particle impurities, moisture and trace organic matters in gas can be effectively removed, pure gas input is provided for a subsequent separation module, and the stability and high efficiency of a hydrogen recovery process are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen recovery device field especially relates to a hydrogen recovery enrichment device. BACKGROUND

[0002] Hydrogen is a clean and efficient energy carrier, which has a wide range of applications in chemical industry, energy and environmental protection. However, in the industrial production process (such as chemical by-product gas, steelmaking tail gas, biogas fermentation, etc.), hydrogen usually exists in the form of mixed gas, which contains a large amount of particulate impurities, moisture, carbon dioxide, methane and other components. These impurities not only reduce the purity of hydrogen, but also may cause damage to the subsequent purification equipment and storage devices, so it is necessary to use a collection device to process hydrogen.

[0003] The traditional filter device adopts a single-stage filter structure, which can only remove large particulate impurities, and has limited treatment effect on small particulate, moisture and organic impurities, which is difficult to provide sufficient pure gas input for the subsequent separation module, affecting the overall purification efficiency. At the same time, many existing devices lack flexibility in the design of filter assembly, and are complicated to disassemble and assemble, which requires long time shutdown for maintenance and replacement of filter element, affecting the overall operation efficiency of the equipment. Therefore, a hydrogen recovery enrichment device is proposed. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides a hydrogen recovery enrichment device, which aims at improving the limited treatment effect of small particles, moisture and organic impurities in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a hydrogen recovery enrichment device, comprising a bottom plate, the bottom plate top is fixedly connected with separation tank, adsorption tower and gas storage tank from right to left in turn, the separation tank right part is fixedly connected with filter box, the filter box inside is provided with filter assembly and mounting assembly, the separation tank inside is provided with separation assembly, the adsorption tower inside is provided with adsorption assembly;

[0006] The filter assembly comprises a sealing ring, the sealing ring is arranged in the filter box, the sealing ring inner wall is fixedly connected with filter screen, glass fiber filter element and silica gel from right to left in turn, and two positioning holes are formed in the sealing ring outer wall.

[0007] As a further description of the above technical scheme:

[0008] The mounting assembly comprises two pressing rods and two clamping blocks, the pressing rods and the clamping blocks are slidably connected to the inside of the filter box, the outer wall of the pressing rod is fixedly connected with a limiting plate, the bottom of the pressing rod is fixedly connected with a first inclined plate, the outer wall of the pressing rod is sleeved with a first spring, and the outer wall of the clamping block is fixedly connected with a second inclined block matched with the first inclined plate.

[0009] As a further description of the above technical solution:

[0010] The separation assembly comprises a polyimide film, a palladium ceramic composite film and a silicon-oxygen ceramic film, the polyimide film is fixedly connected to the upper inner wall of the separation box, the palladium ceramic composite film is fixedly connected to the middle inner wall of the separation box, and the silicon-oxygen ceramic film is fixedly connected to the bottom inner wall of the separation box.

[0011] As a further description of the above technical solution:

[0012] The adsorption assembly comprises activated carbon, an exhaust pipe and a vacuum pump, the activated carbon is fixedly connected to the middle side of the inside of the adsorption tower, the exhaust pipe is fixedly connected to the outer wall of the adsorption tower, the exhaust pipe is provided with a valve, the vacuum pump is fixedly connected to the bottom plate, and a pipeline is connected between the inside of the adsorption tower and the input end of the vacuum pump.

[0013] As a further description of the above technical solution:

[0014] The top of the separation box is fixedly connected with an air pump, a pipeline is connected between the input end of the air pump and the inside of the filter box, and a pipeline is connected between the output end of the air pump and the top inside of the separation box.

[0015] As a further description of the above technical solution:

[0016] The bottom plate is fixedly connected with an air compressor, the input end of the air compressor is communicated with the inside of the adsorption tower through an air pipe, and the output end of the air compressor is communicated with the gas storage tank through an air pipe.

[0017] As a further description of the above technical solution:

[0018] The separation box and the adsorption tower are provided with an air pipe.

[0019] As a further description of the above technical solution:

[0020] The clamping block penetrates the filter box and is clamped with the positioning hole.

[0021] The utility model has the advantages of the following:

[0022] 1. The utility model discloses a filter assembly can effectively remove the particulate impurity, moisture and trace organic matter in the gas, provide the pure gas input for the subsequent separation module, ensure the stability and high efficiency of hydrogen recovery process, and the multistage membrane separation structure of separation assembly can improve hydrogen purity gradually, finally realize the deep purification of hydrogen, ensure that the hydrogen purity after purification reaches the industrial or high -end application demand, and adsorption assembly further removes residual impurity, under the negative pressure environment through the adsorption of activated carbon, the purity of hydrogen is improved significantly.

[0023] 2. The utility model discloses a mounting assembly can be quickly disassembled and replaced filter greatly reduce the maintenance difficulty and equipment downtime, and the structural design of first spring and second spring auxiliary ensures the convenience of filter assembly installation and disassembly, and ensures the stability in the operation process. ACCURACY OF DRAWINGS

[0024] Figure 1 A hydrogen recovery enrichment device is provided for the utility model;

[0025] Figure 2 An air compressor of a hydrogen recovery enrichment device is provided for the utility model;

[0026] Figure 3 An extrusion rod of a hydrogen recovery enrichment device is provided for the utility model;

[0027] Figure 4 A filter screen of a hydrogen recovery enrichment device is provided for the utility model;

[0028] Figure 5 A separation tank of a hydrogen recovery enrichment device is provided for the utility model;

[0029] Figure 6 An activated carbon of a hydrogen recovery enrichment device is provided for the utility model.

[0030] LEGEND:

[0031] 1, bottom plate, 2, separation tank, 3, filter box, 4, air pump, 5, adsorption tower, 6, gas storage tank, 7, vacuum pump, 8, air compressor, 9, sealing ring, 10, filter screen, 11, glass fiber filter element, 12, silica gel, 13, positioning hole, 14, pressing rod, 15, limit plate, 16, first inclined plate, 17, first spring, 18, clamping block, 19, second inclined block, 20, second spring, 21, polyimide membrane, 22, palladium ceramic composite membrane, 23, silicon oxygen ceramic membrane, 24, activated carbon, 25, exhaust pipe, 26, valve. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0033] With reference to Figures 1-3 The utility model provides an embodiment: a kind of hydrogen recovery enrichment device, including bottom plate 1, bottom plate 1 is the support main body of whole device, for ensuring in the process of carrying out hydrogen collection device is stable, bottom plate 1 top is sequentially fixedly connected with separation tank 2, adsorption tower 5 and gas storage tank 6 from right to left, separation tank 2 is used to separate hydrogen, and the impurities in hydrogen are left, adsorption tower 5 is used to the hydrogen after separation is purified by adsorption, gas storage tank 6 is used to collect the hydrogen after purification, separation tank 2 right part is fixedly connected with filter box 3, filter box 3 can effectively remove the impurities in gas, provide pure gas input for subsequent separation module, improve separation effect, filter box 3 is internally provided with filter assembly and mounting assembly, filter assembly is used to remove the solid particles and moisture in gas, and mounting assembly facilitates the quick installation and disassembly of filter element, reduce maintenance cost, separation tank 2 is internally provided with separation assembly, separation assembly realizes multistage separation by different types of separation membrane, gradually improves hydrogen purity, adsorption tower 5 is internally provided with adsorption assembly, and adsorption assembly is used to further remove trace impurities in gas, so as to achieve the extraction of high-purity hydrogen;

[0034] With reference to Figure 4 Filter assembly includes sealing ring 9, sealing ring 9 is arranged in filter box 3, sealing ring 9 is the core connecting part of filter assembly, can effectively prevent gas from leaking in the filtering process, ensure that gas can pass through filter assembly completely, improve filtering efficiency, sealing ring 9 inner wall is sequentially fixedly connected with filter screen 10, glass fiber filter element 11 and silica gel 12 from right to left, filter screen 10 is located at the right side of sealing ring 9 inner wall, is the first filtering barrier of filter assembly, is specially used to remove larger particle impurities in gas flow, glass fiber filter element 11 is as the second stage filter device of filter assembly, mainly used to remove small particle matters and suspended solids in gas, silica gel 12 is the third stage filter device of filter assembly, mainly used to adsorb moisture and trace organic matter in gas flow, guarantee the dryness of gas, sealing ring 9 outer wall is provided with two positioning holes 13, positioning hole 13 is used to connect and fix filter assembly, ensure that filter screen 10, glass fiber filter element 11 and silica gel 12 maintain stable position in the working process.

[0035] With reference to Figure 3The mounting assembly comprises two pressing rods 14 and two clamping blocks 18, which are slidingly connected to the inner wall of the filter box 3, and the sliding connection mode ensures smooth operation of the device, reduces additional connecting components, and improves the stability of the structure. The outer wall of the pressing rod 14 is fixedly connected with a limiting plate 15, which can provide a limiting function when the pressing rod 14 moves, preventing the pressing rod 14 from separating from the inner wall of the filter box 3. The bottom of the pressing rod 14 is fixedly connected with a first inclined plate 16, which cooperates with the clamping block 18. When the first inclined plate 16 vertically slides, it pushes the clamping block 18 to slide horizontally. The outer wall of the pressing rod 14 is provided with a first spring 17, which provides a restoring force during installation and disassembly. The outer wall of the clamping block 18 is fixedly connected with a second inclined block 19 matched with the first inclined plate 16. The side away from the two clamping blocks 18 is fixedly connected with a second spring 20, which can provide power support when the clamping block 18 returns to its original position, ensuring firm installation of the filter assembly.

[0036] Referring to Figure 5 The separation assembly comprises a polyimide film 21, a palladium ceramic composite film 22 and a silicon-oxygen ceramic film 23. The polyimide film 21 is fixedly connected to the upper inner wall of the separation box 2. The polyimide film 21 can preliminarily separate hydrogen gas and macromolecular gas, has good selectivity and permeability. The palladium ceramic composite film 22 is fixedly connected to the middle inner wall of the separation box 2. The palladium ceramic composite film 22 uses the high selectivity of the palladium film to hydrogen to extract medium-purity hydrogen. The silicon-oxygen ceramic film 23 is fixedly connected to the bottom inner wall of the separation box 2. The silicon-oxygen ceramic film 23 can work in harsh environments, further separates mixed gas and removes impurities in hydrogen, ensuring stable operation of downstream devices.

[0037] Referring to Figure 6 The adsorption assembly comprises activated carbon 24, an exhaust pipe 25 and a vacuum pump 7. The activated carbon 24 is fixedly connected to the middle side of the inner wall of the adsorption tower 5. The activated carbon 24 can efficiently adsorb organic matter and trace impurities in gas, further improving the purity of hydrogen. The exhaust pipe 25 is fixedly connected to the outer wall of the adsorption tower 5. The exhaust pipe 25 can quickly exhaust impurity gas released during desorption. The exhaust pipe 25 is provided with a valve 26, which can accurately control the gas flow during exhaust. The vacuum pump 7 is fixedly connected to the bottom plate 1. A pipeline is connected between the inner wall of the adsorption tower 5 and the input end of the vacuum pump 7. The vacuum pump 7 can rapidly reduce the pressure in the adsorption tower 5, enhancing the desorption effect of impurity gas.

[0038] Referring to Figure 1 and Figure 2The top of the separation tank 2 is fixedly connected with an air pump 4, a pipeline is connected between the input end of the air pump 4 and the inside of the filter tank 3, and a pipeline is connected between the output end of the air pump 4 and the top of the separation tank 2. The input and output functions of the air pump 4 are used to uniformly distribute the filtered gas to the top of the separation tank 2, thereby enhancing the separation effect of the gas.

[0039] With reference to Figure 2 The bottom plate 1 is fixedly connected with an air compressor 8. The input end of the air compressor 8 is communicated with the inside of the adsorption tower 5 through an air pipe, and the output end of the air compressor 8 is communicated with the gas storage tank 6 through an air pipe. The air compressor 8 provides a high-pressure gas flow and sends the treated hydrogen gas to the gas storage tank 6 through the air pipe for storage, thereby ensuring the safe storage of high-purity hydrogen gas.

[0040] With reference to Figure 6 An air pipe is arranged between the separation tank 2 and the adsorption tower 5, and the gas in the separation tank 2 is efficiently transmitted to the adsorption tower 5 through the air pipe, thereby realizing seamless connection of the gas flow and further optimizing the operation efficiency of the equipment.

[0041] With reference to Figure 3 The clamping block 18 penetrates the filter tank 3 and is clamped in the positioning hole 13. The clamping design of the clamping block 18 ensures that the filter assembly is stable and firm during operation, thereby avoiding loosening caused by vibration or gas flow fluctuation.

[0042] Working principle: when it is necessary to collect hydrogen gas, the hydrogen-containing mixed gas is discharged into the inside of the filter tank 3 through the pipeline. When the hydrogen gas enters the inside of the filter tank 3, the gas first passes through the filter screen 10 pair to filter the larger impurities in the gas, then the gas passes through the glass fiber filter element 11 to filter the smaller impurities in the gas, and finally the positioning hole 13 adsorbs the moisture and trace organic matter in the gas, so that the gas is dried.

[0043] The filtered gas is transported into the inside of the separation tank 2 under the action of the air pump 4. At this time, the gas passes through the polyimide membrane 21, which uses its high permeability to small molecules to preliminarily separate hydrogen gas from macromolecular gas. Then, the gas passes through the palladium ceramic composite membrane 22, which uses the high selectivity of the palladium membrane to further purify the hydrogen gas and remove most of the impurities. Finally, the gas passes through the silicon-oxygen ceramic membrane 23, which performs the last deep purification of the hydrogen gas and removes trace impurity gas.

[0044] Then, the gas enters the inside of the adsorption tower 5 through the pipeline for adsorption. At this time, the vacuum pump 7 is started to extract the air in the inside of the adsorption tower 5, so that a negative pressure is generated in the inside of the adsorption tower 5. In the negative pressure environment, the molecules in the gas are selectively adsorbed on the activated carbon 24, and at the same time, the hydrogen gas is separated out.

[0045] Finally, the hydrogen gas inside the adsorption tower 5 is compressed by starting the air compressor 8 and delivered to the gas storage tank 6 for storage.

[0046] After the filter assembly is used for a long time, the filtering effect is reduced, at this time, the two pressing rods 14 can be pressed to make the two pressing rods 14 slide vertically, when the two pressing rods 14 slide, the limiting plate 15 is driven to slide, further driving the first inclined plate 16 to slide, at the same time, the first spring 17 is extruded, so that the first spring 17 stores potential energy, when the first inclined plate 16 is pressed, the second inclined block 19 is driven to slide, further driving the clamping block 18 to slide, so that the clamping block 18 is separated from the clamping state with the sealing ring 9, at this time, the sealing ring 9 can be taken out for cleaning, to ensure the good filtering effect.

[0047] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A hydrogen recovery and enrichment device, comprising a base plate (1), characterized in that: The bottom plate (1) is fixedly connected from right to left to the top of the separation box (2), the adsorption tower (5) and the gas storage tank (6). The right side of the separation box (2) is fixedly connected to the filter box (3). The filter box (3) is equipped with a filter assembly and an installation assembly. The separation box (2) is equipped with a separation assembly. The adsorption tower (5) is equipped with an adsorption assembly. The filter assembly includes a sealing ring (9), which is disposed inside the filter box (3). The inner wall of the sealing ring (9) is fixedly connected with a filter screen (10), a glass fiber filter element (11) and a silicone (12) from right to left. The outer wall of the sealing ring (9) has two positioning holes (13).

2. The hydrogen recovery and enrichment device according to claim 1, characterized in that: The installation assembly includes two pressing rods (14) and two locking blocks (18). The outer walls of the pressing rods (14) and the locking blocks (18) are slidably connected inside the filter box (3). The outer wall of the pressing rods (14) is fixedly connected to a limiting plate (15). The bottom of the pressing rods (14) is fixedly connected to a first inclined plate (16). The outer wall of the pressing rods (14) is fitted with a first spring (17). The outer wall of the locking blocks (18) is fixedly connected to a second inclined block (19) that matches the first inclined plate (16). The two locking blocks (18) are fixedly connected to a second spring (20) on the side that is far apart from each other.

3. The hydrogen recovery and enrichment device according to claim 2, characterized in that: The separation assembly includes a polyimide membrane (21), a palladium ceramic composite membrane (22), and a silicon oxide ceramic membrane (23). The polyimide membrane (21) is fixedly connected to the upper part of the inner wall of the separation chamber (2), the palladium ceramic composite membrane (22) is fixedly connected to the middle part of the inner wall of the separation chamber (2), and the silicon oxide ceramic membrane (23) is fixedly connected to the bottom of the inner wall of the separation chamber (2).

4. The hydrogen recovery and enrichment device according to claim 3, characterized in that: The adsorption assembly includes activated carbon (24), an exhaust pipe (25), and a vacuum pump (7). The activated carbon (24) is fixedly connected to the inside of the adsorption tower (5). The exhaust pipe (25) is fixedly connected to the outer wall of the adsorption tower (5). A valve (26) is provided on the exhaust pipe (25). The vacuum pump (7) is fixedly connected to the bottom plate (1). A pipe is connected between the inside of the adsorption tower (5) and the input end of the vacuum pump (7).

5. The hydrogen recovery and enrichment device according to claim 3, characterized in that: An air pump (4) is fixedly connected to the top of the separation box (2). A pipe is connected between the input end of the air pump (4) and the inside of the filter box (3). A pipe is also connected between the output end of the air pump (4) and the top of the separation box (2).

6. The hydrogen recovery and enrichment device according to claim 4, characterized in that: An air compressor (8) is fixedly connected to the base plate (1). The input end of the air compressor (8) is connected to the inside of the adsorption tower (5) through an air pipe, and the output end of the air compressor (8) is connected to the air storage tank (6) through an air pipe.

7. A hydrogen recovery and enrichment device according to claim 3, characterized in that: A gas pipe is provided between the separation box (2) and the adsorption tower (5).

8. The hydrogen recovery and enrichment device according to claim 2, characterized in that: The locking block (18) passes through the filter box (3) and engages with the positioning hole (13).

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