Hydrogen purification and recovery device

Abstract

The utility model discloses a hydrogen purification and recovery device, which relates to the technical field of hydrogen purification and comprises a tank body, a gas inlet pipe fixedly connected to the lower end of the left side of the tank body, a liquid discharge pipe fixedly connected to the bottom of the tank body, a gas valve fixedly mounted on the outer side of the liquid discharge pipe, and an automatic liquid adding device fixedly mounted on the left side of the top of the tank body. A first exhaust pipe is fixedly connected to the upper end of the right side of the tank body, a conveying pipe is fixedly connected to the tail end of the first exhaust pipe, the tail end of the conveying pipe is detachably connected with the drying assembly, a limiting ring is fixedly connected to the inner wall of the upper end of the tank body, and a rotating groove is formed in the surface of the limiting ring in a penetrating mode; and a spraying assembly is arranged in the tank body. The hydrogen purification device has the advantages that the spraying assembly is arranged, so that active ingredients in catalytic liquid can react with hydrogen more effectively, the purification efficiency is improved, the molecular sieve is arranged, it is ensured that moisture in the hydrogen is effectively removed, and meanwhile the hydrogen cannot be lost or other impurities cannot be introduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen purification, in particular to a hydrogen purification and recovery device. Background Art

[0002] At room temperature and pressure, hydrogen is a highly flammable gas that is colorless, transparent, odorless, and insoluble in water. Hydrogen is the gas with the smallest known density in the world, so it can be used as a filling gas for airships and hydrogen balloons. Hydrogen is the substance with the smallest relative molecular mass and has strong reducing properties, so it is often used as a reducing agent in chemical reactions.

[0003] For example, Chinese patent (CN202220680653.9) discloses a hydrogen purification and recovery device, including a tank body, a drying mechanism is provided on the inner surface of the upper end of the tank body, an automatic liquid adding device is provided on the outer surface of one side of the upper end of the tank body, an air inlet pipe is provided on the outer surface of one side of the automatic liquid adding device, and an air outlet pipe is provided on the outer surface of the lower end of the tank body. The hydrogen purification and recovery device described in the utility model can dry the generated hydrogen and effectively remove the moisture in the hydrogen to obtain dry hydrogen through the drying mechanism provided, and the hydrogen purification and recovery device can switch the solid outlet and the gas outlet by rotating the outlet pipe body through the outlet pipe provided, so as to prevent the soda lime from slipping out and remaining in the outlet to affect the hydrogen collection.

[0004] However, the above device still has certain problems. The catalytic liquid of the automatic liquid adding device is directly introduced into the reaction tank body. Since the hydrogen is dissipated inside the reaction tank body, the catalytic liquid will not react fully with the hydrogen. Then the purification process may become slow, and it will take longer to achieve the expected purification effect. The purification efficiency is too low, which will affect the purity of the hydrogen after purification, resulting in the subsequent use of the hydrogen failing to achieve the best effect. In view of the above problems, a hydrogen purification and recovery device is proposed to solve them. Utility Model Content

[0005] In order to solve the above technical problems, a hydrogen purification and recovery device is provided, which solves the problem that the catalytic liquid of the current automatic liquid adding device is directly introduced into the reaction tank body. Since the hydrogen is dissipated inside the reaction tank body, the catalytic liquid will not react fully with the hydrogen, and the purification process may become slow, and it will take a longer time to achieve the expected purification effect. The purification efficiency is too low, which will affect the purity of the hydrogen after purification, resulting in the subsequent use of the hydrogen not achieving the best effect.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is: a hydrogen purification and recovery device, including a tank body, an air inlet pipe is fixedly connected to the lower left end of the tank body, a drain pipe is fixedly connected to the bottom of the tank body, an air valve is fixedly installed on the outside of the drain pipe, an automatic liquid adding device is fixedly installed on the left side of the top of the tank body, a drying component is fixedly connected to the right side of the tank body, a first exhaust pipe is fixedly connected to the upper right end of the tank body, a delivery pipe is fixedly connected to the end of the first exhaust pipe, and the end of the delivery pipe is detachably connected to the drying component, a limiting ring is fixedly connected to the inner wall of the upper end of the tank body, a rotating groove is opened through the surface of the limiting ring, and a spray component is arranged inside the tank body.

[0007] Preferably, the drying assembly comprises a drying box, which is fixedly connected to the upper surface of the tank body, a box cover is snapped on the top of the drying box, a second exhaust pipe is fixedly connected to the left side of the box cover, and an observation window is arranged on the top of the box cover.

[0008] Preferably, at least two groups of slots are provided on both the front and rear side walls inside the drying box, and the drying box is provided with mounting frames having the same number as the slots, and the mounting frames are snap-connected to the inside of the slots.

[0009] Preferably, a molecular sieve is fixedly installed in the middle of the installation frame, and a color-changing silica gel is fixedly connected to the middle of the molecular sieve.

[0010] Preferably, the spray assembly includes a U-shaped tube, the left end of the U-shaped tube is fixedly connected to the output end of the automatic liquid adding device, the right end of the U-shaped tube is fixedly connected to a connecting tube, the bottom end of the connecting tube passes through the top plate of the tank body and is rotatably connected to the inside of the tank body with a floating joint, and the bottom of the floating joint is fixedly connected to a three-way joint.

[0011] Preferably, spray pipes are fixedly connected on both sides of the left and right sides of the three-way joint, a plurality of liquid outlet holes are opened through the surfaces of the two spray pipes, the liquid outlet holes on the surfaces of the two spray pipes are arranged in opposite directions, and an L-shaped plate is fixedly connected to one end of the two spray pipes away from the three-way joint, the L-shaped plate is slidably connected to the inside of the rotating groove, mounting holes are opened at the bottom of the two L-shaped plates, and balls are arranged inside the two mounting holes.

[0012] Preferably, at least four supporting legs are fixedly connected to the bottom of the tank body.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] 1. The utility model is provided with a spray assembly, and the catalytic liquid is sprayed out from the liquid outlet. Since the liquid outlets are arranged in opposite directions, under the push of the reaction force, the two spray pipes will rotate with the center of the floating joint to expand the spray range, which can ensure that the catalytic liquid is evenly dispersed and fully contacted with the hydrogen, thereby increasing the reaction surface area, so that the active components in the catalytic liquid can react with the hydrogen more effectively, and the purification efficiency is improved. The full reaction of the catalytic liquid and the hydrogen helps to more thoroughly remove impurities in the hydrogen and improve the purity of the hydrogen.

[0015] 2. The utility model removes moisture from hydrogen by providing a molecular sieve instead of soda lime. The molecular sieve has a high selectivity and can adsorb water molecules of a specific size, while hardly adsorbing hydrogen or other gases. This high selectivity ensures that the moisture in the hydrogen is effectively removed without losing hydrogen or introducing other impurities. In addition, an observation window and color-changing silica gel are provided, so the reaction degree of the molecular sieve can be observed very intuitively to determine whether it needs to be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the tank in the utility model;

[0018] Figure 3 It is an exploded view of the drying component in the utility model;

[0019] Figure 4 It is a schematic diagram of the connection between the spray assembly and the automatic liquid adding device in the utility model;

[0020] Figure 5 It is a schematic diagram of the connection between the L-shaped plate and the ball in the utility model.

[0021] The numbers in the figure are:

[0022] 1. Tank body; 2. Air inlet pipe; 3. Liquid discharge pipe; 4. Air valve; 5. Support leg; 6. First exhaust pipe; 7. Automatic liquid adding device; 8. Drying assembly; 801. Drying box; 802. Box cover; 803. Second exhaust pipe; 804. Observation window; 805. Card slot; 806. Installation frame; 807. Molecular sieve; 808. Color-changing silica gel; 9. Spraying assembly; 901. U-shaped tube; 902. Connecting tube; 903. Floating joint; 904. Three-way joint; 905. Spraying pipe; 906. Liquid outlet; 907. L-shaped plate; 908. Installation hole; 909. Ball; 10. Delivery pipe; 11. Limiting ring; 12. Rotating groove. DETAILED DESCRIPTION

[0023] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0024] Reference Figure 1-5 As shown, a hydrogen purification and recovery device includes a tank body 1, an air inlet pipe 2 is fixedly connected to the lower left end of the tank body 1, a discharge pipe 3 is fixedly connected to the bottom of the tank body 1, an air valve 4 is fixedly installed on the outside of the discharge pipe 3, an automatic liquid adding device 7 is fixedly installed on the left side of the top of the tank body 1, a drying component 8 is fixedly connected to the right side of the tank body 1, a first exhaust pipe 6 is fixedly connected to the upper right end of the tank body 1, a delivery pipe 10 is fixedly connected to the end of the first exhaust pipe 6, and the end of the delivery pipe 10 is detachably connected to the drying component 8, a limiting circular ring 11 is fixedly connected to the inner wall of the upper end of the tank body 1, a rotating groove 12 is opened through the surface of the limiting circular ring 11, and a spray component 9 is arranged inside the tank body 1.

[0025] Preferably, the drying component 8 includes a drying box 801, which is fixedly connected to the upper surface of the tank body 1, a box cover 802 is clamped on the top of the drying box 801, a second exhaust pipe 803 is fixedly connected to the left side of the box cover 802, and an observation window 804 is provided on the top of the box cover 802. The color change of the color-changing silica gel 808 can be observed through the observation window 804, and a new molecular sieve indicator can be replaced in time to ensure the impurity removal effect. A sealing ring is provided at the connection position between the box cover 802 and the drying box 801 to prevent hydrogen from escaping.

[0026] At least two groups of card slots 805 are provided on the front and rear side walls inside the drying box 801. The drying box 801 is provided with mounting frames 806 having the same number as the card slots 805. The mounting frames 806 are snap-fitted into the card slots 805. The snap-fit ​​connection method is adopted, so that the mounting frames 806 can be replaced more quickly.

[0027] Preferably, a molecular sieve 807 is fixedly installed in the middle of the mounting frame 806, and a color-changing silica gel 808 is fixedly connected to the middle of the molecular sieve 807. The molecular sieve 807 uses an activated 4A molecular sieve as a moisture adsorbent. This type of molecular sieve 807 can be reused, reducing the generation of solid waste.

[0028] Preferably, the spray assembly 9 includes a U-shaped tube 901, the left end of the U-shaped tube 901 is fixedly connected to the output end of the automatic liquid adding device 7, the right end of the U-shaped tube 901 is fixedly connected to a connecting tube 902, the bottom end of the connecting tube 902 passes through the top plate of the tank body 1 and is rotatably connected to the inside of the tank body 1 with a floating joint 903, and the bottom of the floating joint 903 is fixedly connected to a three-way joint 904. The spray assembly 9 can adjust the rotation speed of the spray pipe 905 by adjusting the power of the water pump inside the automatic liquid adding device 7 to adapt to different production needs and raw material changes. This flexibility makes the production process more controllable and can be adjusted according to actual needs.

[0029] Specifically, spray pipes 905 are fixedly connected to the left and right sides of the three-way joint 904, and a plurality of liquid outlet holes 906 are opened on the surfaces of the two spray pipes 905. The liquid outlet holes 906 on the surfaces of the two spray pipes 905 are arranged in opposite directions. An L-shaped plate 907 is fixedly connected to one end of the two spray pipes 905 away from the three-way joint 904. The L-shaped plate 907 is slidably connected to the inside of the rotating groove 12. Mounting holes 908 are opened at the bottom of the two L-shaped plates 907. Ball bearings 909 are arranged inside the two mounting holes 908. The ball bearings 909 are arranged at the bottom of the L-shaped plates 907 to reduce the friction force on the L-shaped plates 907 when rotating, so that the rotation of the two spray pipes 905 is smoother.

[0030] Optionally, at least four supporting legs 5 are fixedly connected to the bottom of the tank body 1 , and the supporting legs 5 can be tilted to lower the center of gravity of the tank body 1 and improve the stability of the tank body 1 .

[0031] Working principle: When in use, firstly, the hydrogen to be purified is introduced into the tank body 1 through the air inlet pipe 2, and then the liquid pump inside the automatic liquid adding device 7 passes the catalytic liquid through the spray assembly 9. The catalytic liquid first enters the U-shaped tube 901, and then passes through the floating joint 903, the three-way joint 904 and the spray pipe 905 in sequence through the connecting pipe 902, and is sprayed out from the liquid outlet 906. Since the liquid outlet 906 is set in opposite directions, under the push of the reaction force, the two spray pipes 905 will rotate about the center of the floating joint 903 to expand the spray range, so that the catalytic liquid and the hydrogen are fully in contact, thereby improving the purification effect of the hydrogen. The purified hydrogen enters the drying box 801 through the first exhaust pipe 6 and the delivery pipe 10, and the moisture contained in the hydrogen is removed under the adsorption action of the molecular sieve 807.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A hydrogen purification and recovery device, characterized in that: The invention comprises a tank body (1), wherein the lower left end of the tank body (1) is fixedly connected to an air inlet pipe (2), the bottom of the tank body (1) is fixedly connected to a liquid discharge pipe (3), an air valve (4) is fixedly installed on the outer side of the liquid discharge pipe (3), an automatic liquid adding device (7) is fixedly installed on the left side of the top of the tank body (1), a drying component (8) is fixedly connected to the right side of the tank body (1), a first exhaust pipe (6) is fixedly connected to the upper right end of the tank body (1), a delivery pipe (10) is fixedly connected to the end of the first exhaust pipe (6), and the end of the delivery pipe (10) is detachably connected to the drying component (8), a limiting circular ring (11) is fixedly connected to the inner wall of the upper end of the tank body (1), a rotating groove (12) is opened through the surface of the limiting circular ring (11), and a spray component (9) is arranged inside the tank body (1).

2. A hydrogen purification and recovery device according to claim 1, characterized in that: The drying assembly (8) comprises a drying box (801), the drying box (801) being fixedly connected to the upper surface of the tank body (1), a box cover (802) being snapped onto the top of the drying box (801), a second exhaust pipe (803) being fixedly connected to the left side of the box cover (802), and an observation window (804) being arranged on the top of the box cover (802).

3. A hydrogen purification and recovery device according to claim 2, characterized in that: At least two groups of card slots (805) are provided on both the front and rear side walls inside the drying box (801), and the drying box (801) is provided with installation frames (806) with the same number as the card slots (805), and the installation frames (806) are snap-connected to the inside of the card slots (805).

4. A hydrogen purification and recovery device according to claim 3, characterized in that: A molecular sieve (807) is fixedly installed in the middle of the installation frame (806), and a color-changing silica gel (808) is fixedly connected to the middle of the molecular sieve (807).

5. A hydrogen purification and recovery device according to claim 1, characterized in that: The spray assembly (9) comprises a U-shaped tube (901), the left end of the U-shaped tube (901) being fixedly connected to the output end of the automatic liquid adding device (7), the right end of the U-shaped tube (901) being fixedly connected to a connecting tube (902), the bottom end of the connecting tube (902) passing through the top plate of the tank body (1) and being rotatably connected to a floating joint (903) inside the tank body (1), the bottom of the floating joint (903) being fixedly connected to a three-way joint (904).

6. A hydrogen purification and recovery device according to claim 5, characterized in that: The left and right sides of the three-way joint (904) are fixedly connected with spray pipes (905); a plurality of liquid outlet holes (906) are formed through the surfaces of the two spray pipes (905); the liquid outlet holes (906) on the surfaces of the two spray pipes (905) are arranged in opposite directions; an L-shaped plate (907) is fixedly connected to one end of the two spray pipes (905) away from the three-way joint (904); the L-shaped plate (907) is slidably connected to the inside of the rotating groove (12); mounting holes (908) are formed at the bottoms of the two L-shaped plates (907); and balls (909) are arranged inside the two mounting holes (908).

7. A hydrogen purification and recovery device according to claim 1, characterized in that: At least four supporting legs (5) are fixedly connected to the bottom of the tank body (1).

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