Gas-liquid separation washing tank applied to AEM hydrogen production system

Abstract

The utility model belongs to the technical field of AEM electrolytic hydrogen production systems, and particularly relates to a gas-liquid separation washing tank applied to an AEM hydrogen production system, a tank body is respectively provided with a gas-liquid inlet, a water return port, a pure water inlet and a gas outlet, a bubbling horn mouth is arranged on a first bubbling plate and is communicated with the gas-liquid inlet, and a second bubbling plate is arranged on a second bubbling plate and is communicated with the pure water inlet. The cooling coil is mounted on the second bubbling plate and is positioned above the bubbling horn mouth; the spraying head is positioned above the cooling coil and is communicated with the pure water inlet, and the silk screen is positioned above the spraying head; the cooling coil pipe is coiled into an inner layer spiral pipe and an outer layer spiral pipe through a pipe, a plurality of spoilers are fixedly connected to the inner layer spiral pipe in the gas-liquid flowing direction, the spoilers are arranged in a spiral step shape, the inner side of each spoiler is fixedly connected with the inner layer spiral pipe, and the outer side of each spoiler extends out of a gap between the outer layer spiral pipes. According to the gas-liquid separator, gas-liquid separation can be effectively carried out on gas and liquid, and potassium hydroxide in the gas and the liquid can be well washed off.

Description

TECHNICAL FIELD

[0001] The utility model belongs to AEM electrolytic hydrogen production system technical field, concretely speaking, a kind of gas-liquid separation washing tank applied to AEM hydrogen production system. BACKGROUND

[0002] Hydrogen energy is a secondary energy, with the advantages of large energy density, zero pollution, zero carbon emission;Because hydrogen exists in the form of compound in nature, so it needs specific production process to obtain utilization. Hydrogen energy sources are diverse, can be obtained by coal, oil, natural gas and other fossil energy reform, biomass pyrolysis, or microbial approach, and can be obtained by electrolysis of water. Electrolysis of water can be well coupled with various renewable energy sources, for example, the intermittent characteristics of wind power generation make it difficult to directly and stably integrate into the power grid, and by electrolysis of water, unstable wind power can be converted into hydrogen storage, and when energy is needed, hydrogen can be converted into electrical energy by fuel cell.

[0003] The existing AEM (anion exchange membrane water electrolysis hydrogen production) electrolytic hydrogen production system is mostly in the form of small-scale hydrogen production system stacking to achieve the purpose of large-scale hydrogen production system, so this hydrogen production system needs to be configured with independent demisting and alkali washing module;Using this method not only has high cost, but also occupies large space. And the existing ALK (alkaline electrolytic water hydrogen production) alkaline electrolytic hydrogen production system mostly uses two-stage vapor-liquid separation tank for vapor-liquid separation, and only one horn hole is used at the end of the gas inlet for bubbling;In this way, the bubbles are large, and the alkali solution cannot be better dissolved in the alkali removal water, and the alkali removal and mist removal effect is not ideal. UTILITY MODEL CONTENT

[0004] In view of the above problems existing in the existing AEM electrolytic hydrogen production system, the purpose of the utility model is to provide a gas-liquid separation washing tank applied to AEM hydrogen production system. The gas-liquid separation washing tank separates and washes the oxygen and hydrogen generated in the AEM hydrogen production system, and recycles the washed potassium hydroxide solution.

[0005] The purpose of the utility model is realized by the following technical solutions:

[0006] The utility model discloses a tank body and set up in the tank body's bubble horn mouth, first bubble plate, second bubble plate, cooling coil, shower head and silk screen, the tank body is opened with gas -liquid import, backwater mouth, pure water entrance and gas export respectively, the bubble horn mouth is installed on the first bubble plate, and with gas -liquid import intercommunication, the cooling coil is installed on the second bubble plate, and is located the bubble horn mouth's top, the shower head is located the cooling coil's top, and with pure water entrance intercommunication, the silk screen is located the shower head's top, the cooling coil is by a pipe disc into the inner and outer two layer spiral pipe, and a plurality of spoiler is fixedly connected on the inner layer spiral pipe along the gas -liquid flow direction, and the each spoiler is arranged in spiral ladder shape, and the inboard of each spoiler is fixedly connected with the inner layer spiral pipe, and the outboard of each spoiler is projected by the gap between the outer layer spiral pipe.

[0007] Among them: the height of backwater mouth is located between pure water entrance and second bubble plate, and the liquid level of pure water that is sprayed through the shower head is always below backwater mouth.

[0008] Backwater mouth is bent upwards at one end in the tank body.

[0009] The first bubble plate and second bubble plate are circular plates, and the first bubble plate and second bubble plate are evenly perforated respectively, and the first bubble plate is further provided with a central hole for mounting the bubble horn mouth.

[0010] The sum of the cross-sectional area of each hole on the first bubble plate is a multiple of the cross-sectional area of the small caliber of the bubble horn mouth, and the sum of the cross-sectional area of each hole on the second bubble plate is a multiple of the cross-sectional area of the small caliber of the bubble horn mouth.

[0011] The tank body comprises a cylinder body and upper and lower heads fixedly connected to the upper and lower ends of the cylinder body, the gas outlet is arranged at the top of the upper head, and a pressure gauge mounting hole is further arranged in the upper head, the pure water inlet, backwater mouth and gas-liquid inlet are arranged on the cylinder body, and a pressure sensor mounting hole is further arranged in the cylinder body.

[0012] A nitrogen purging hole is arranged on the tank body.

[0013] The utility model has the advantages and positive effects that:

[0014] 1. The utility model can effectively separate gas and liquid, and can better wash away potassium hydroxide in the gas and liquid.

[0015] 2. The utility model has a compact overall shape, and can be better integrated in the hydrogen production system.

[0016] 3. The utility model has low cost, and all the parts used inside have mature processing methods, which can be mass-produced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the external structure schematic view of the utility model;

[0018] Fig. 2 It is the internal structure schematic view of the utility model;

[0019] Fig. 3 It is the structure schematic view of the cooling coil of the utility model;

[0020] Fig. 4 It is the local enlarged view of the spraying head of the utility model;

[0021] Wherein: 1 is the upper head, 2 is the lower head, 3 is the cylinder, 4 is the gas-liquid inlet, 5 is the bubble horn, 6 is the first bubble plate, 7 is the second bubble plate, 8 is the cooling coil, 9 is the backwater port, 10 is the nitrogen purging port, 11 is the cooling water inlet and outlet, 12 is the pure water inlet, 13 is the spraying head, 14 is the pressure sensor installation port, 15 is the wire mesh, 16 is the pressure gauge installation port, 17 is the gas outlet, 18 is the spoiler. DETAILED DESCRIPTION

[0022] The utility model will be further described in detail in combination with the drawings.

[0023] As Figs. 1-4 shown, the utility model includes the jar body and sets up the bubble horn 5, the first bubble plate 6, the second bubble plate 7, the cooling coil 8, the spraying head 13 and the wire mesh 15 in the jar body, is set up with the gas-liquid inlet 4, the backwater port 9, the pure water inlet 12 and the gas outlet 17 on the jar body respectively, the bubble horn 5 is installed on the first bubble plate 6, and is communicated with the gas-liquid inlet 4, the cooling coil 8 is installed on the second bubble plate 7, and is located above the bubble horn 5;The spraying head 13 is located above the cooling coil 8, and is communicated with the pure water inlet 12, and the wire mesh 15 is located above the spraying head 13;The cooling coil 8 is by a pipe disc into inner and outer two-layer spiral pipe, and a plurality of spoilers 18 are fixedly connected on the inner layer spiral pipe along the gas-liquid flow direction, each spoiler 18 is arranged in spiral ladder shape, and the inner side of each spoiler 18 is fixedly connected with the inner layer spiral pipe, and the outer side of each spoiler 18 is stretched out by the gap between the outer layer spiral pipe.

[0024] The jar body of the embodiment includes the cylinder 3 and the upper head 1 and the lower head 2 fixedly connected with the upper and lower ends of the cylinder 3 respectively, the cylinder 3 is seamless steel pipe, and the upper head 1 and the lower head 2 adopt standard EHB oval head (welding oval head). The gas outlet 17 is set in the top of the upper head 1, and the pressure gauge installation port 16 is also set in the upper head 1;The pure water inlet 12, the backwater port 9 and the gas-liquid inlet 4 are arranged on the cylinder 3 respectively, and the pressure sensor installation port 14 is also set in the cylinder 3.

[0025] The two ends of the cooling coil 8 of the embodiment are penetrated by the cylinder 3 as the cooling water inlet and outlet 11; the spoiler 18 is in the shape of a sector, and the inner side of the spoiler 18 is welded on the inner layer spiral pipe, and the outer side of the spoiler 18 is in contact with the inner wall of the cylinder 3.

[0026] The first bubble plate 6 and the second bubble plate 7 of the embodiment are both circular plates, and the first bubble plate 6 and the second bubble plate 7 are both uniformly perforated (the hole diameter of the embodiment is 6 mm), and the first bubble plate 6 is further provided with a central hole for mounting the bubble horn 5.

[0027] The bubble horn 5 of the embodiment is a hollow frustum, and a plurality of holes are formed in the bubble horn 5.

[0028] The spray head 13 of the embodiment is a commercially available product, and is purchased from Shanghai Feituo Spray System Co., Ltd., and the model is XSWT1.0-SS.

[0029] The height of the water return port 9 of the embodiment is located between the pure water inlet 12 and the second bubble plate 7, and the liquid level of the pure water sprayed by the spray head 13 is always below the water return port 9.

[0030] For safety consideration, the cylinder (specifically the cylinder 3) is provided with a nitrogen purging port 10, when the AEM system is stopped or started, the nitrogen electromagnetic valve will be opened, and the external nitrogen enters the inside of the cylinder through the nitrogen purging port 10 to purge the residual oxygen or hydrogen.

[0031] The cylinder of the utility model is installed in the AEM hydrogen production system through the fixing support.

[0032] The working principle of the utility model is as follows:

[0033] When the AEM hydrogen production system starts, at this time, the external pure water enters the tank body through the pure water inlet 12, and then the pure water is high-pressure atomized and fan-shaped sprayed by the spray head 13, to spray the upward gas in the tank body. In the tank body, the liquid level of the pure water is below the backwater outlet 9 of the potassium hydroxide solution, and the external cooling water enters the cooling coil 8 through the cooling water inlet and outlet 11 to circulate. The cooling coil 8 has inner and outer two-layer spiral pipes, and a plurality of spoiler plates are welded on the inner spiral pipe along the gas-liquid flow direction, so that the gas rises in a spiral shape, so that the gas can better exchange heat with the cooling coil 8. When the gas (air) and liquid (potassium hydroxide solution) enter the tank body through the gas-liquid inlet 4, they are uniformly decomposed into small bubbles and quickly start to rise when passing through the bubble horn 5. In the process of water vapor rising, it is continuously decomposed into smaller bubbles when passing through the first bubble plate 6 and the second bubble plate 7. At this time, the lower half of the tank body is pure water, because the temperature of the pure water is lower than that of the incoming gas-liquid, therefore, in the process of bubble rising, the potassium hydroxide solution in the bubble will melt in the pure water. When the liquid level is higher than the recovery outlet 9 of the potassium hydroxide solution, it will be recovered through the backwater outlet 9. The gas continues to rise and spirally rises under the action of the spoiler plate 18 and contacts the cooling coil 8 filled with cooling water, and under the action of condensation, the water vapor in the gas becomes liquid water and naturally falls, and the gas continues to go up and passes through the wire mesh 15 to remove the foam and then is discharged from the tank body through the gas outlet 17 reserved at the top.

[0034] The utility model is applied to AEM electrolytic hydrogen production system, AEM water electrolysis hydrogen production has both PEM water electrolysis hydrogen production system's big density current, and also has ALK water electrolysis hydrogen production system's low cost advantage.

Claims

1. A gas-liquid separation washing tank applied to an AEM hydrogen production system, characterized in that: The tank body is provided with a gas-liquid inlet (4), a backwater outlet (9), a pure water inlet (12) and a gas outlet (17), a bubbling horn (5) is installed on a first bubbling plate (6) and communicates with the gas-liquid inlet (4), a cooling coil (8) is installed on a second bubbling plate (7) and is located above the bubbling horn (5), a shower head (13) is located above the cooling coil (8) and communicates with the pure water inlet (12), and a wire mesh (15) is located above the shower head (13).

2. The gas-liquid separation scrubber tank for use in an AEM hydrogen generation system according to claim 1, characterized in that: The height of the backwater outlet (9) is located between the pure water inlet (12) and the second bubbling plate (7), and the liquid level of the pure water sprayed by the shower head (13) is always below the backwater outlet (9).

3. The gas-liquid separation scrubber tank for use in the AEM hydrogen production system according to claim 1, characterized in that: The backwater outlet (9) is located at one end of the tank body and is upwardly bent.

4. The gas-liquid separation scrubber tank for use in an AEM hydrogen generation system according to claim 1, characterized in that: The first bubbling plate (6) and the second bubbling plate (7) are both circular plates, the first bubbling plate (6) and the second bubbling plate (7) are both uniformly provided with holes, and the first bubbling plate (6) is further provided with a central hole for installing the bubbling horn (5).

5. The gas-liquid separation scrubber tank for use in an AEM hydrogen generation system according to claim 4, characterized in that: The sum of the cross-sectional areas of the holes in the first bubbling plate (6) is a multiple of the cross-sectional area of the small-diameter part of the bubbling horn (5), and the sum of the cross-sectional areas of the holes in the second bubbling plate (7) is a multiple of the cross-sectional area of the small-diameter part of the bubbling horn (5).

6. The gas-liquid separation scrubber tank for use in an AEM hydrogen generation system according to claim 1, characterized in that: The tank body comprises a cylinder body (3) and upper and lower heads (1) and (2) which are fixed to the upper and lower ends of the cylinder body (3), the gas outlet (17) is arranged at the top of the upper head (1), the upper head (1) is further provided with a pressure gauge installation opening (16), the pure water inlet (12), the backwater outlet (9) and the gas-liquid inlet (4) are arranged on the cylinder body (3), and the cylinder body (3) is further provided with a pressure sensor installation opening (14).

7. The gas-liquid separation scrubber tank for use in an AEM hydrogen generation system according to claim 1, characterized in that: The tank body is provided with a nitrogen purging opening (10).

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