Multi-stage filtering device for hydrogen purification

Abstract

The utility model provides a multi-stage filtering device for hydrogen purification, which is characterized in that a partition plate is arranged in the middle of a base body; an air outlet is formed in the top of the upper cavity, and a first air inlet is formed in the bottom; the adsorption tank is mounted in the lower cavity, and the input end is connected with the gas inlet; the air duct is mounted in the upper cavity, a coaxial exhaust pipe is arranged in the air duct, and a second air inlet connected with the adsorption tank is formed in one side of the air duct; one end of the exhaust pipe extends out of the air duct and is in butt joint with the air outlet; the collecting tank is installed in the lower cavity and connected with the bottom of the air duct through a cone. The partition plates are arranged in the base body, so that corresponding spaces are formed in the base body corresponding to multi-stage filtration; wherein the adsorption tank can be used for adsorbing water vapor and part of particulate matters doped in gas; a plurality of adsorption tanks are used in a switching manner, so that continuous filtration can be realized; and the air duct and the exhaust pipe can form a cyclone dust collector, and crystal salt particles doped in the gas can be effectively separated, so that the purification of hydrogen is realized.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of hydrogen gas filtration, in particular to a multistage filtering device for hydrogen gas purification. BACKGROUND

[0002] Hydrogen gas can have a positive effect on global greenhouse effect and environmental pollution problems as a clean energy; electrolysis of seawater to produce hydrogen gas can electrolyze seawater and desalinate by using electric energy, and can not only prepare hydrogen gas to realize energy storage, but also can realize production of fresh water.

[0003] When the seawater is electrolyzed to produce hydrogen gas, the working pressure is 2MPa, the working temperature is 90°C, and the hydrogen gas and oxygen gas are generated by directly electrolyzing seawater in a seawater electrolysis tank with high salt content by using a special electrode; in the process, the hydrogen gas just escaped from the seawater contains a small amount of droplet or fog-shaped seawater and a small amount of crystallized salt particles, and the liquid and solid substances rich in salt must be removed as much as possible because they have a strong corrosive effect on the subsequent equipment and pipelines.

[0004] The existing hydrogen gas filtering device cannot meet the filtering and purification requirements of electrolysis of seawater to produce hydrogen gas in industrialization, large scale and long time continuous work when facing the crude hydrogen gas containing a small amount of droplet or fog-shaped seawater and a small amount of crystallized salt particles; therefore, the above problems need to be solved urgently. SUMMARY

[0005] In view of the above defects or deficiencies in the prior art, it is expected to provide a multistage filtering device for hydrogen gas purification.

[0006] The application provides a multistage filtering device for hydrogen gas purification, comprising

[0007] A base body, a partition plate is arranged at the middle of the base body, and the internal space is divided into an upper cavity and a lower cavity;

[0008] A gas outlet is arranged at the top of the upper cavity, and a first gas inlet is arranged at the bottom;

[0009] A plurality of adsorption tanks are arranged in the lower cavity, and the input end is connected with the gas inlet;

[0010] A wind tube is arranged in the upper cavity, and a coaxial exhaust pipe is arranged in the inside, and a second gas inlet connected with the adsorption tank is arranged on one side;

[0011] One end of the exhaust pipe extends to the outside of the wind tube and is connected with the gas outlet;

[0012] A collection tank is arranged in the lower cavity and connected with the bottom of the wind tube through a cone.

[0013] Further,

[0014] The base body is in a U shape, and one side is in an open structure;

[0015] One side of the upper cavity is provided with a first side plate detachably mounted with the base body;

[0016] One side of the lower cavity is provided with a second side plate detachably mounted with the base body.

[0017] Further,

[0018] The inside of the adsorption tank is provided with a baffle in the length direction, and the top is provided with a third air inlet and a third air outlet respectively located on both sides of the baffle;

[0019] The baffle is connected with the side wall and the top of the adsorption tank respectively, so that the inside of the adsorption tank forms a U-shaped space.

[0020] Further,

[0021] The adsorption tank is filled with one or more of activated carbon, activated alumina and zeolite.

[0022] Further,

[0023] The third air inlet and the third air outlet are respectively in a T shape, and are sleeved with matching lock nuts;

[0024] The baffle is connected with the side wall and the top of the adsorption tank respectively, so that the inside of the adsorption tank forms a U-shaped space.

[0025] The adapter is provided with a matching external thread on the adapter.

[0026] Further,

[0027] The upper cavity is further provided with a first three-way valve;

[0028] The input end of the first three-way valve is connected with the first air inlet;

[0029] The third air inlet is connected with the output end of the first three-way valve through the corresponding adapter.

[0030] Further,

[0031] The upper cavity is further provided with a second three-way valve;

[0032] The output end of the second three-way valve is connected with the second air inlet;

[0033] The third air outlet is connected with the input end of the second three-way valve through the corresponding adapter.

[0034] Further,

[0035] The bottom of the base body is provided with a matching support mechanism corresponding to the adsorption tank.

[0036] The support mechanism comprises a base fixedly installed at the bottom of the base body and a support seat connected with the base;

[0037] A first screw rod is vertically installed on the base;

[0038] The support seat is provided with a second screw rod coaxial with the first screw rod and having opposite rotation directions;

[0039] The second screw rod is connected with the first screw rod through a matching thread sleeve for adjusting the distance between the support seat and the base.

[0040] The application has the advantages and positive effects that:

[0041] The technical solution sets a partition plate in the base body, so that the inside of the base body corresponds to spaces formed by multi-stage filtration; the adsorption tank can adsorb water vapor and part of particulate matters mixed in the gas; in combination with switching of the multiple adsorption tanks, continuous filtration can be realized; the setting of the air cylinder can form a cyclone dust collector with the exhaust pipe, which can effectively separate crystalline salt particles mixed in the gas, thereby realizing purification of hydrogen. BRIEF DESCRIPTION OF DRAWINGS

[0042] Fig. 1 A structural schematic view of a multi-stage filtration device for hydrogen purification provided by the embodiment of the application is provided;

[0043] Fig. 2 A structural schematic view of a gas passage of a multi-stage filtration device for hydrogen purification provided by the embodiment of the application is provided;

[0044] Fig. 3 A structural schematic view of an adsorption tank of a multi-stage filtration device for hydrogen purification provided by the embodiment of the application is provided.

[0045] The text annotations in the drawings represent: 100-base body; 110-partition plate; 120-first gas outlet; 130-first gas inlet; 131-first three-way valve; 200-adsorption tank; 210-third gas inlet; 220-third gas outlet; 300-air cylinder; 310-exhaust pipe; 320-second gas inlet; 321-second three-way valve; 330-cone; 400-collection tank; 500-base; 510-support seat; 520-first screw rod; 530-second screw rod; 540-thread sleeve. DETAILED DESCRIPTION

[0046] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be described in detail below with reference to the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0047] Please refer to Figs. 1-3 The embodiment provides a multi-stage filtering device for hydrogen purification, which comprises a base body 100, a partition plate 110 arranged at the middle of the base body 100 and used for separating the internal space into an upper cavity and a lower cavity, a first gas outlet 120 arranged at the top of the upper cavity, a first gas inlet 130 arranged at the bottom of the upper cavity, a plurality of adsorption tanks 200 arranged in the lower cavity and connected with the gas inlet 130, a wind drum 300 arranged in the upper cavity, an exhaust pipe 310 coaxially arranged in the wind drum 300, and a second gas inlet 320 arranged on one side of the wind drum 300 and connected with the adsorption tank 200, wherein one end of the exhaust pipe 310 extends to the outside of the wind drum 300 and is connected with the first gas outlet 120, and a collecting tank 400 arranged in the lower cavity and connected with the bottom of the wind drum 300 through a conus 330.

[0048] In the embodiment, the number of the adsorption tanks 200 is two, which are arranged in the lower cavity of the base body 100 respectively and connected with the first gas inlet 130 respectively, so that the adsorption tanks 200 can be replaced conveniently and the filtering process can be ensured to continue.

[0049] In the embodiment, the wind drum 300 is provided with the second gas inlet 320 on one side, and the exhaust pipe 310 coaxially arranged in the wind drum 300 and the conus 330 arranged at the bottom of the wind drum 300 can effectively form a cyclone dust collector, so that the crystal salt particles mixed in the hydrogen can be separated, and the adsorption tank 200 connected between the first gas inlet 130 and the second gas inlet 320 can effectively remove the droplet or mist sea water mixed in the hydrogen, so that the multi-stage filtering of the hydrogen can be realized and the purity of the hydrogen can be ensured.

[0050] In a preferred embodiment, the base body 100 is in a U shape and one side is in an open structure, one side of the upper cavity is provided with a first side plate detachably mounted on the base body 100, and one side of the lower cavity is provided with a second side plate detachably mounted on the base body 100.

[0051] In the embodiment, one side of the base body 100 is in an open structure, and the first side plate and the second side plate are detachably mounted, so that the device can be conveniently installed, maintained and repaired, and the adsorption tank 200 can be easily replaced by detaching the side plate during actual installation.

[0052] In a preferred embodiment, the inside of the adsorption tank 200 is provided with a baffle in the length direction, and a third gas inlet 210 and a third gas outlet 220 are respectively arranged at the two sides of the baffle; the baffle is connected with the side wall and the top of the adsorption tank 200 respectively, so that the inside of the adsorption tank 200 forms a U-shaped space.

[0053] In this embodiment, the inside of the adsorption tank 200 is provided with a baffle, so that the inside space forms a U-shaped structure, which not only improves the adsorption stroke, but also makes the third gas inlet 210 and the third gas outlet 220 located at the same end of the adsorption tank 200, thereby facilitating the installation of the adsorption tank 200 and the base body 100.

[0054] In a preferred embodiment, the adsorption tank 200 is filled with one or more of activated carbon, activated alumina and zeolite.

[0055] In this embodiment, the adsorption tank 200 is filled with a mixture of activated carbon and activated alumina; when hydrogen enters the adsorption tank 200 from the third gas inlet 210, it flows in the U-shaped space and fully contacts with the adsorbent; the activated carbon can effectively adsorb water vapor in the hydrogen, and the activated alumina has good adsorption effect on part of particulate matters.

[0056] In a preferred embodiment, the third gas inlet 210 and the third gas outlet 220 are respectively in T-shaped structure, and are sleeved with matching lock nuts; the partition plate 110 is provided with matching butt joints corresponding to the third gas inlet 210 and the third gas outlet 220; the butt joints are provided with external threads matched with the lock nuts.

[0057] In this embodiment, the third gas inlet 210 and the third gas outlet 220 are respectively in T-shaped structure, and can be quickly connected with the butt joints by cooperating with the lock nuts; this connection mode ensures the sealing and stability of the connection between the adsorption tank 200 and the upper cavity, and prevents hydrogen leakage; during installation, the technician only needs to align the T-shaped interface with the butt joint, and rotate the lock nut to tightly cooperate with the external threads of the butt joint, so that the connection can be completed, which is simple and convenient.

[0058] In a preferred embodiment, the upper cavity is further provided with a first three-way valve 131; the input end of the first three-way valve 131 is connected with the first gas inlet 130; the third gas inlet 210 is connected with the output end of the first three-way valve 131 through the corresponding butt joint.

[0059] In the embodiment, when the hydrogen enters from the first gas inlet 130, it is distributed to different adsorption tanks 200 through the first three-way valve 131; the hydrogen enters the adsorption tank 200 from the third gas inlet 210, flows in the U-shaped space, and fully contacts with the adsorbent; in actual use, as the adsorbent adsorbs more impurities, the adsorption effect will gradually decrease; at this time, the hydrogen can be introduced into other adsorption tanks 200 for continuous filtering by switching the first three-way valve 131, and the adsorbent in the used adsorption tank 200 can be replaced or regenerated, so as to realize continuous filtering.

[0060] In a preferred embodiment, a second three-way valve 321 is further arranged in the upper cavity; an output end of the second three-way valve 321 is connected with the second gas inlet 320; and the third gas outlet 220 is connected with an input end of the second three-way valve 321 through a corresponding connecting head.

[0061] In the embodiment, the arrangement of the first three-way valve 131 and the second three-way valve 321 enables the flow direction of the hydrogen in the device to be flexibly controlled; by switching the opening and closing states of the valves, the multiple adsorption tanks 200 can be alternately used, so as to ensure the continuity of the filtering work.

[0062] In a preferred embodiment, a matching support mechanism is arranged at the bottom of the base body 100 corresponding to the adsorption tank 200; the support mechanism comprises a base 500 fixedly installed at the bottom of the base body 100 and a support seat 510 connected with the base 500; a first lead screw 520 is vertically installed on the base 500; a second lead screw 530 coaxial with the first lead screw 520 and having opposite rotation directions is arranged on the support seat 510; and the second lead screw 530 and the first lead screw 520 are connected through a matching threaded sleeve 540 for adjusting the distance between the support seat 510 and the base 500.

[0063] In the embodiment, as the adsorption tank 200 has a large weight and needs to reserve space at the bottom during installation, long-time suspension installation may cause leakage at the connection; the support mechanism can effectively support the adsorption tank 200, so as to prevent the adsorption tank 200 from being in a suspended state after installation.

[0064] The principles and implementation manners of the present application are described by using specific examples in the present article, and the above example descriptions are only used to help understand the method of the present application and its core idea. The above descriptions are only the preferred implementation manners of the present application. It should be noted that, due to the limited nature of the language expression, there are objectively infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner without departing from the principles of the present application; these improvements, refinements, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, shall be regarded as the protection scope of the present application.

Claims

1. A multi-stage filtering device for hydrogen purification, characterized in that, The utility model relates to a multistage filtering device for hydrogen purification, comprising a base (100) provided with a partition plate (110) in the middle for separating the internal space into an upper cavity and a lower cavity; a first air outlet (120) is arranged on the top of the upper cavity, and a first air inlet (130) is arranged at the bottom; a plurality of adsorption tanks (200) are arranged in the lower cavity, and the input end is connected with the air inlet (130); a wind pipe (300) is arranged in the upper cavity, and a coaxial exhaust pipe (310) is arranged in the inside, and one side is provided with a second air inlet (320) connected with the adsorption tank (200); one end of the exhaust pipe (310) extends to the outside of the wind pipe (300) and is connected with the first air outlet (120); a collection tank (400) is arranged in the lower cavity and is connected with the bottom of the wind pipe (300) through a conus (330).

2. The multistage filtering device for hydrogen purification according to claim 1, wherein the base (100) is in a U shape and has an open structure on one side; a first side plate is arranged on one side of the upper cavity and is detachably connected with the base (100); a second side plate is arranged on one side of the lower cavity and is detachably connected with the base (100).

3. The multistage filtering device for hydrogen purification according to claim 1, wherein a baffle is arranged in the adsorption tank (200) along the length direction, and a third air inlet (210) and a third air outlet (220) are arranged on the top of the adsorption tank (200) on both sides of the baffle respectively; the baffle is connected with the side wall and the top of the adsorption tank (200) respectively, so that a U-shaped space is formed in the adsorption tank (200).

4. The multistage filtering device for hydrogen purification according to claim 3, wherein one or more of activated carbon, activated alumina and zeolite are filled in the adsorption tank (200).

5. The multistage filtering device for hydrogen purification according to claim 3, wherein the third air inlet (210) and the third air outlet (220) are in a T shape and are sleeved with matched lock nuts; a matched connector is arranged on the partition plate (110) corresponding to the third air inlet (210) and the third air outlet (220); a matched external thread is arranged on the connector.

6. The multistage filtering device for hydrogen purification according to claim 5, wherein a first three-way valve (131) is further arranged in the upper cavity; the input end of the first three-way valve (131) is connected with the first air inlet (130); the third air inlet (210) is connected with the output end of the first three-way valve (131) through the corresponding connector.

7. The multistage filtering device for hydrogen purification according to claim 5, wherein a second three-way valve (321) is further arranged in the upper cavity; the output end of the second three-way valve (321) is connected with the second air inlet (320). The third gas outlet (220) is connected with the input end of the second three-way valve (321) through the corresponding joint.

8. The multi-stage filtering device for hydrogen purification according to claim 1, characterized in that, The bottom of the base body (100) is provided with a matching support mechanism corresponding to the adsorption tank (200); The support mechanism comprises a base (500) fixedly installed at the bottom of the base body (100) and a support seat (510) connected with the base (500); A first screw rod (520) is vertically installed on the base (500); The support seat (510) is provided with a second screw rod (530) coaxial with the first screw rod (520) and having opposite rotation directions; The second screw rod (530) and the first screw rod (520) are connected through a matching threaded sleeve (540) for adjusting the spacing between the support seat (510) and the base (500).

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