Hydrogen drying and purifying device

Abstract

The utility model relates to the technical field of purification devices, in particular to a hydrogen drying and purifying device which comprises a hydrogen primary treatment tank, a gas inlet pipeline, a gas booster pump, a multi-layer impurity removal and filtration assembly, a gas drying tank body, an aluminum oxide circulating water absorption assembly, a water-vapor separation box and a condensation gas-liquid separation assembly, the side end part of the hydrogen primary treatment tank is fixedly connected with a gas inlet pipeline; a gas booster pump is arranged at the outer end part of the gas inlet pipeline; a plurality of layers of impurity removing and filtering assemblies are arranged in the hydrogen primary treatment tank; the upper end part of the hydrogen primary treatment tank is in pipeline connection with a gas drying tank body; an aluminum oxide circulating water absorption assembly is arranged in the gas drying tank body; the upper end of the gas drying tank is connected with a water-vapor separation box through a pipeline. Three filtering cavities are formed in the hydrogen primary treatment tank through the activated carbon adsorption plate, the polymer filtering plate and the zeolite molecular sieve plate, and after hydrogen entering the device passes through the three cavities, impurities in the gas can be blocked by the three filtering cavities.

Description

Technical Field

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

[0002] In many industrial production processes, by-product hydrogen is generated, such as in iron and steel enterprises, chlor-alkali enterprises, propane dehydrogenation enterprises, etc. In the past, this by-product hydrogen was often not fully utilized or even directly discharged. However, in the context of the country's promotion of hydrogen energy applications, more and more such enterprises have realized the value of hydrogen purification devices. It can help enterprises turn waste into treasure, reduce raw material consumption and costs, thus increasing the demand for hydrogen purification devices.

[0003] When the existing purification device is in use, it is unable to filter the hydrogen entering the device, resulting in impurities in the gas easily entering the device and affecting the later purification effect. Moreover, the purification process is too single, and the purified gas will contain water vapor, affecting the use of the purified hydrogen.

[0004] Therefore, there is an urgent need to set up a structure that can preliminarily regularize the hydrogen entering the device to avoid hydrogen mixed with particulate impurities, and then add multiple drying and dehydration structures to enable the water vapor in the hydrogen to be removed, improve the purity of the purified hydrogen, and solve the problem of the single purification process and poor purification effect. Summary of the Utility Model

[0005] In order to overcome the problems that in the process of using the purification device, it is unable to filter the hydrogen entering the device, resulting in impurities in the gas easily entering the device and affecting the later purification effect, and the purification process is too single, and the purified gas will contain water vapor, affecting the use of the purified hydrogen.

[0006] The technical solution of the utility model is: a hydrogen drying and purification device, comprising a hydrogen preliminary treatment tank, an intake pipeline, a gas booster pump, a multi-layer impurity removal and filtration assembly, a gas drying tank, an alumina cyclic water absorption assembly, a water vapor separation box and a condensate gas-liquid separation assembly; the side end of the hydrogen preliminary treatment tank is fixedly connected with the intake pipeline; the outer end of the intake pipeline is provided with the gas booster pump; the inside of the hydrogen preliminary treatment tank is provided with the multi-layer impurity removal and filtration assembly; the upper end of the hydrogen preliminary treatment tank is connected to the gas drying tank through a pipeline; the inside of the gas drying tank is provided with the alumina cyclic water absorption assembly; the upper end of the gas drying tank is connected to the water vapor separation box through a pipeline; the inside of the water vapor separation box is provided with the condensate gas-liquid separation assembly; the multi-layer impurity removal and filtration assembly includes a central fixing column, an activated carbon adsorption plate and a polymer filter plate; the central fixing column is arranged inside the hydrogen preliminary treatment tank; the side end of the central fixing column is fixedly connected with the activated carbon adsorption plate; the side end of the central fixing column is fixedly connected with the polymer filter plate.

[0007] Preferably, during the use of the purification device, the activated carbon adsorption plate, polymer filter plate, and zeolite molecular sieve plate in the multi-layer impurity removal and filtration assembly form three filtration cavities inside the hydrogen preliminary treatment tank. After the hydrogen entering the device passes through the three cavities, the impurities in the gas will be blocked by the three filtration cavities, preventing them from entering the subsequent drying and purification process. This can more effectively remove tiny solid particles, liquid droplets, and other impurities in the hydrogen, thus significantly improving the purity of the hydrogen. In the alumina cyclic water absorption assembly, the first motor drives the stirring plate to stir in the gas drying tank, enabling the alumina particles put into the gas drying tank to come into full contact with the hydrogen, absorb the water vapor contained in the hydrogen, and improve the drying and adsorption effects. Moreover, the stirring can prevent the alumina particles from sticking and caking, thereby more effectively removing the moisture and impurities in the hydrogen. At the same time, the alumina particle recovery pipe on the side of the bottom of the gas drying tank dries the alumina particles flowing in from the gas drying tank through the externally wound electric heating wire. After the alumina particles are saturated with water vapor absorption, they can be heated and dried, and then continue to enter the gas drying tank from the reflux pipe through the spiral conveyor plate, avoiding frequent replacement of alumina particles inside the device and improving the practical effect of the device. In the condensate gas-liquid separation assembly, the S-shaped transmission pipe cooperates with the refrigeration conduction plate to rapidly cool the internal hydrogen, enabling the water vapor to solidify into droplets and flow into the droplet collection box through the liquid transmission pipe, further drying and purifying the hydrogen to ensure the purity of the hydrogen finally entering the hydrogen collection tank.

[0008] Preferably, the multi-layer impurity removal and filtration assembly further includes a zeolite molecular sieve plate and a closed baffle; the side end of the central fixed column is fixedly connected with the zeolite molecular sieve plate; the side end of the central fixed column is fixedly connected with the closed baffle, and the closed baffle can divide the inside of the hydrogen preliminary treatment tank into three filtration layers under the separation of the activated carbon adsorption plate, polymer filter plate, and zeolite molecular sieve plate, and prevent the hydrogen from flowing back, enabling it to smoothly enter the gas drying tank along the pipeline.

[0009] Preferably, the alumina cyclic water absorption assembly includes a first motor, a first transmission rod, a stirring plate, an alumina particle recovery pipe, an electric heating wire, a circulation pipe, a second motor, a second transmission rod, a spiral conveyor plate, and a reflux pipe; the first motor is installed at the upper end of the gas drying tank; the output shaft of the first motor passes through the gas drying tank and is fixedly connected with the first transmission rod, and the first motor can drive the first transmission rod to rotate, thereby driving the stirring plate to stir the alumina particles inside the gas drying tank.

[0010] Preferably, a toggle plate is fixedly connected to the side end of the first transmission rotating rod; an alumina particle recovery pipe is fixedly connected to the side end of the gas drying tank body; and a circulation pipe is fixedly connected to the side end of the alumina particle recovery pipe. The alumina particle recovery pipe allows the alumina particles put into the gas drying tank body to flow in slowly, allowing the electric heating wire to heat and dry it, so that it can continue to be used without frequent replacement, and the heated alumina particles can also better absorb water vapor in the hydrogen.

[0011] Preferably, a second motor is installed at the lower end of the circulation pipe; the output shaft of the second motor passes through the circulation pipe and is fixedly connected to a second transmission rod; the outer end of the second transmission rod is fixedly connected to a spiral conveying plate; the side end of the circulation pipe is fixedly connected to a return pipe; the side end of the return pipe is fixedly connected to the side end of the gas drying tank body, and the spiral conveying plate in the circulation pipe can allow the heated particles in the alumina particle recovery pipe to re-enter the gas drying tank body from the return pipe.

[0012] Preferably, the condensation gas-liquid separation component includes an S-shaped transmission pipe, a refrigeration conduction plate and a liquid transmission pipe; the upper end pipe of the gas drying tank is connected to the S-shaped transmission pipe; the S-shaped transmission pipe is installed inside the water vapor separation box; the inner wall of the water vapor separation box is provided with a refrigeration conduction plate; the lower end of the S-shaped transmission pipe is fixedly connected to the liquid transmission pipe, and the S-shaped transmission pipe can increase the flow distance of hydrogen, facilitate the refrigeration conduction plate to cool it, and facilitate the internal fine water vapor to condense into water droplets and enter the droplet collection box.

[0013] Preferably, a liquid droplet collection box is fixedly connected to the lower end of the liquid transmission pipe; a discharge pipe is fixedly connected to the lower end of the liquid droplet collection box; a valve is provided at the outer end of the discharge pipe; the side end pipe of the S-shaped transmission pipe is connected to a hydrogen collection tank, and the discharge pipe can discharge the droplets in the liquid droplet collection box by opening the valve after the collection is completed.

[0014] Beneficial effects of the utility model:

[0015] 1. During the use of the purification device, the activated carbon adsorption plate, polymer filter plate and zeolite molecular sieve plate form three filter cavities inside the hydrogen preliminary treatment tank. After the hydrogen entering the device passes through the three cavities, the impurities in the gas will be blocked by the three filter cavities to avoid entering the subsequent drying and purification process. It can more effectively remove tiny solid particles, droplets and other impurities in the hydrogen, thereby significantly improving the purity of the hydrogen;

[0016] 2. In the alumina cyclic water absorption component, the first motor drives the stirring plate to stir in the gas drying tank, enabling the alumina particles put into the gas drying tank to come into full contact with hydrogen, absorb the water vapor contained in the hydrogen, improve the drying and adsorption effects, and the stirring can prevent the alumina particles from sticking and caking, thereby more effectively removing the moisture and impurities in the hydrogen. At the same time, the alumina particle recovery pipe on the side of the bottom of the gas drying tank dries the alumina particles flowing in from the gas drying tank through the externally wound electric heating wire. After the alumina particles are saturated with absorbed water vapor, they can be heated and dried, and then continue to enter the gas drying tank from the reflux pipe through the spiral conveying plate, avoiding frequent replacement of alumina particles inside the device and improving the practical effect of the device;

[0017] 3. The S-shaped transmission pipe cooperates with the refrigeration conduction plate to rapidly cool the internal hydrogen, enabling the water vapor to solidify into liquid droplets and flow into the droplet collection box through the liquid transmission pipe, further drying and purifying the hydrogen to ensure the purity of the hydrogen finally entering the hydrogen collection tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shows a three-dimensional structural schematic diagram of the purification device of the present utility model;

[0019] Figure 2 Shows a three-dimensional structural schematic diagram of the activated carbon adsorption plate of the purification device of the present utility model;

[0020] Figure 3 Shows a three-dimensional structural schematic diagram of the stirring plate of the purification device of the present utility model;

[0021] Figure 4 Shows a three-dimensional structural schematic diagram of the S-shaped transmission pipe of the purification device of the present utility model;

[0022] Figure 5 Shows a three-dimensional structural schematic diagram of the refrigeration conduction plate of the purification device of the present utility model.

[0023] DESCRIPTION OF THE REFERENCE NUMERALS: 1. Preliminary hydrogen treatment tank; 2. Intake pipe; 3. Gas booster pump; 4. Gas drying tank; 5. Water vapor separation box; 101. Central fixed column; 102. Activated carbon adsorption plate; 103. Polymer filter plate; 104. Zeolite molecular sieve plate; 105. Sealing baffle; 401. First motor; 402. First transmission rotating rod; 403. Stirring plate; 404. Alumina particle recovery pipe; 405. Electric heating wire; 406. Circulation pipe; 407. Second motor; 408. Second transmission rotating rod; 409. Spiral conveying plate; 410. Reflux pipe; 501. S-shaped transmission pipe; 502. Refrigeration conduction plate; 503. Liquid transmission pipe; 6. Hydrogen collection tank; 7. Droplet collection box; 8. Discharge pipe; 9. Valve. Detailed implementation mode

[0024] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Please refer to Figures 1-5 , the present utility model provides an embodiment: a hydrogen drying and purification device, which includes a hydrogen preliminary treatment tank 1, an intake pipeline 2, a gas booster pump 3, a multi-layer impurity removal and filtration assembly, a gas drying tank 4, an alumina cyclic water absorption assembly, a water vapor separation tank 5 and a condensate gas-liquid separation assembly; the side end of the hydrogen preliminary treatment tank 1 is fixedly connected with the intake pipeline 2; the outer end of the intake pipeline 2 is provided with the gas booster pump 3; the inside of the hydrogen preliminary treatment tank 1 is provided with the multi-layer impurity removal and filtration assembly; the upper end of the hydrogen preliminary treatment tank 1 is connected to the gas drying tank 4 through a pipeline; the inside of the gas drying tank 4 is provided with the alumina cyclic water absorption assembly; the upper end of the gas drying tank 4 is connected to the water vapor separation tank 5 through a pipeline; the inside of the water vapor separation tank 5 is provided with the condensate gas-liquid separation assembly; the multi-layer impurity removal and filtration assembly includes a central fixed column 101, an activated carbon adsorption plate 102 and a polymer filter plate 103; the central fixed column 101 is arranged inside the hydrogen preliminary treatment tank 1; the side end of the central fixed column 101 is fixedly connected with the activated carbon adsorption plate 102; the side end of the central fixed column 101 is fixedly connected with the polymer filter plate 103.

[0026] Please refer to Figure 2 , in this embodiment, the multi-layer impurity removal and filtration assembly further includes a zeolite molecular sieve plate 104 and a closing baffle 105; the side end of the central fixed column 101 is fixedly connected with the zeolite molecular sieve plate 104; the side end of the central fixed column 101 is fixedly connected with the closing baffle 105, and the closing baffle 105 can divide the inside of the hydrogen preliminary treatment tank 1 into three filtration layers under the separation of the activated carbon adsorption plate 102, the polymer filter plate 103 and the zeolite molecular sieve plate 104, and avoid the backflow of hydrogen, and can smoothly enter the gas drying tank 4 along the pipeline.

[0027] Please refer to Figure 3, in this embodiment, the alumina cyclic water absorption assembly includes a first motor 401, a first transmission rod 402, a dial plate 403, an alumina particle recovery pipe 404, an electric heating wire 405, a circulation pipe 406, a second motor 407, a second transmission rod 408, a spiral conveyor plate 409, and a return pipe 410; a first motor 401 is installed at the upper end of the gas drying tank 4; the output shaft of the first motor 401 passes through the gas drying tank 4 and is fixedly connected to a first transmission rod 402. The first motor 401 can drive the first transmission rod 402 to rotate, thereby driving the dial plate 403 to stir the alumina particles inside the gas drying tank 4. A dial plate 403 is fixedly connected to the side end of the first transmission rod 402; an alumina particle recovery pipe 404 is fixedly connected to the side end of the gas drying tank 4; a circulation pipe 406 is fixedly connected to the side end of the alumina particle recovery pipe 404. The alumina particle recovery pipe 404 allows the alumina particles put into the gas drying tank 4 to slowly flow in, so that the electric heating wire 405 can heat and dry them, enabling them to be reused without frequent replacement. Moreover, the heated alumina particles can better absorb the water vapor in hydrogen. A second motor 407 is installed at the lower end of the circulation pipe 406; the output shaft of the second motor 407 passes through the circulation pipe 406 and is fixedly connected to a second transmission rod 408; a spiral conveyor plate 409 is fixedly connected to the outer end of the second transmission rod 408; a return pipe 410 is fixedly connected to the side end of the circulation pipe 406; the side end of the return pipe 410 is fixedly connected to the side end of the gas drying tank 4. The spiral conveyor plate 409 in the circulation pipe 406 can re-enter the heated particles in the alumina particle recovery pipe 404 into the gas drying tank 4 through the return pipe 410.

[0028] Please refer to Figures 4-5 , in this embodiment, a liquid droplet collection box 7 is fixedly connected to the lower end of the liquid transmission pipe 503; a discharge pipe 8 is fixedly connected to the lower end of the liquid droplet collection box 7; a valve 9 is provided at the outer end of the discharge pipe 8; a hydrogen collection tank 6 is pipe-connected to the side end of the S-shaped transmission pipeline 501. The discharge pipe 8 can discharge the liquid droplets in the liquid droplet collection box 7 by opening the valve 9 after the liquid droplets are collected.

[0029] When working, first, the hydrogen to be purified enters the device from the intake pipeline 2, and its fluidity inside the device can be improved under the action of the gas booster pump 3. Then, the activated carbon adsorption plate 102, the polymer filter plate 103, and the zeolite molecular sieve plate 104 form three filtration cavities inside the hydrogen preliminary treatment tank 1. After the hydrogen entering the device passes through the three cavities, the impurities in the gas will be blocked by the three filtration cavities, preventing them from entering the subsequent drying and purification process, and being able to more effectively remove the tiny solid particles, liquid droplets, and other impurities in hydrogen, thereby significantly improving the purity of hydrogen.

[0030] Subsequently, the first motor 401 drives the dialing plate 403 to stir in the gas drying tank body 4, enabling the alumina particles put into the gas drying tank body 4 to come into full contact with hydrogen, absorb the water vapor contained in the hydrogen, improve the drying and adsorption effects, and the stirring can prevent the alumina particles from sticking and caking, thereby more effectively removing the moisture and impurities in the hydrogen. At the same time, the alumina particle recovery pipe 404 on the side of the bottom of the gas drying tank body 4 dries the alumina particles flowing in from the gas drying tank body 4 through the externally wound electric heating wire 405. After the alumina particles are saturated with absorbed water vapor, they can be heated and dried, and then continue to enter the gas drying tank body 4 from the reflux pipe 410 through the spiral conveying plate 409, avoiding frequent replacement of alumina particles inside the device and improving the practical effect of the device.

[0031] Finally, the S-shaped transmission pipe 501 and the refrigeration conduction plate 502 are used to rapidly cool the internal hydrogen, so that the water vapor can solidify into liquid droplets and flow into the droplet collection box 7 from the liquid transmission pipe 503, which plays a role in further drying and purifying the hydrogen to ensure the purity of the hydrogen finally entering the hydrogen collection tank 6.

[0032] Through the above steps, the entry of impurities in the hydrogen into the device can be reduced, preventing impurities from entering the subsequent drying and purification links, reducing the pollution of the alumina particles and the damage to other internal components of the device, prolonging their service life. The activated carbon adsorption plate 102, the polymer filter plate 103 and the zeolite molecular sieve plate 104 form three filtering cavities inside the hydrogen preliminary treatment tank 1. After the hydrogen entering the device passes through the three cavities, the impurities in the gas will be blocked by the three filtering cavities, preventing them from entering the subsequent drying and purification process, and being able to more effectively remove the tiny solid particles, liquid droplets and other impurities in the hydrogen, thus significantly improving the purity of the hydrogen.

[0033] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A hydrogen drying and purification device, comprising a preliminary hydrogen treatment tank (1); characterized in that: The invention also comprises an air intake pipe (2), a gas booster pump (3), a multi-layer impurity removal filter assembly, a gas drying tank body (4), an alumina circulating water absorption assembly, a water vapor separation box (5) and a condensed gas-liquid separation assembly; the side end of the hydrogen preliminary treatment tank (1) is fixedly connected with the air intake pipe (2); the outer end of the air intake pipe (2) is provided with a gas booster pump (3); the interior of the hydrogen preliminary treatment tank (1) is provided with a multi-layer impurity removal filter assembly; the upper end of the hydrogen preliminary treatment tank (1) is connected with the gas drying tank body (4); the interior of the gas drying tank body (4) is provided with an oxide Aluminum circulating water absorption component; the upper end pipe of the gas drying tank body (4) is connected to a water vapor separation box (5); a condensation gas-liquid separation component is arranged inside the water vapor separation box (5); the multi-layer impurity removal filter component comprises a central fixed column (101), an activated carbon adsorption plate (102) and a polymer filter plate (103); a central fixed column (101) is arranged inside the hydrogen preliminary treatment tank (1); the side end of the central fixed column (101) is fixedly connected to the activated carbon adsorption plate (102); and the side end of the central fixed column (101) is fixedly connected to the polymer filter plate (103).

2. The hydrogen drying and purification device according to claim 1, wherein: The multi-layer impurity removal filter assembly also includes a zeolite molecular sieve plate (104) and a closed baffle plate (105); the zeolite molecular sieve plate (104) is fixedly connected to the side end of the central fixed column (101); and the closed baffle plate (105) is fixedly connected to the side end of the central fixed column (101).

3. The hydrogen drying and purification device according to claim 1, wherein: The alumina circulating water absorption component comprises a first motor (401), a first transmission rotating rod (402), a toggle plate (403), an alumina particle recovery pipe (404), an electric heating wire (405), a circulation pipe (406), a second motor (407), a second transmission rotating rod (408), a spiral conveying plate (409) and a reflux pipe (410); the first motor (401) is installed at the upper end of the gas drying tank body (4); the output shaft of the first motor (401) passes through the gas drying tank body (4) and is fixedly connected to the first transmission rotating rod (402).

4. A hydrogen drying and purification device according to claim 3, characterized in that: The side end of the first transmission rotating rod (402) is fixedly connected to a toggle plate (403); the side end of the gas drying tank (4) is fixedly connected to an alumina particle recovery pipe (404); and the side end of the alumina particle recovery pipe (404) is fixedly connected to a circulation pipe (406).

5. A hydrogen drying and purification device according to claim 4, characterized in that: A second motor (407) is installed at the lower end of the circulation pipe (406); the output shaft of the second motor (407) passes through the circulation pipe (406) and is fixedly connected to a second transmission rotating rod (408); the outer end of the second transmission rotating rod (408) is fixedly connected to a spiral conveying plate (409); the side end of the circulation pipe (406) is fixedly connected to a return pipe (410); and the side end of the return pipe (410) is fixedly connected to the side end of the gas drying tank body (4).

6. The hydrogen drying and purification device according to claim 1, wherein: The condensate gas-liquid separation assembly includes an S-shaped transmission pipeline (501), a refrigeration conduction plate (502), and a liquid transmission pipe (503); the upper end pipeline of the gas drying tank body (4) is connected to the S-shaped transmission pipeline (501); the S-shaped transmission pipeline (501) is installed inside the water-vapor separation box (5); the inner wall of the water-vapor separation box (5) is provided with a refrigeration conduction plate (502); the lower end of the S-shaped transmission pipeline (501) is fixedly connected to the liquid transmission pipe (503).

7. The hydrogen drying and purification device according to claim 6, characterized in that: The lower end of the liquid transmission pipe (503) is fixedly connected to a droplet collection box (7); the lower end of the droplet collection box (7) is fixedly connected to a discharge pipe (8); a valve (9) is arranged at the outer end of the discharge pipe (8); the side end of the S-shaped transmission pipeline (501) is connected to a hydrogen collection tank (6) through a pipeline.

Images