Water-gas separator for electrolytic hydrogen production system

Abstract

The utility model discloses a water-gas separator for an electrolytic hydrogen production system, which comprises a separator, a partition plate is arranged in the separator, the partition plate is longitudinally distributed in the separator, the upper space of the separator is divided into an oxygen gas-phase space and a hydrogen gas-phase space by the partition plate, and the oxygen gas-phase space is communicated with the hydrogen gas-phase space. A suspension height is formed between the partition plate and the bottom of the separator, a liquid phase space is formed in the lower portion of the separator, liquid is injected into the separator, the partition plate is inserted below the liquid level, so that the oxygen gas phase space and the hydrogen gas phase space are isolated from each other, the position of the partition plate deviates to one side of the separator, and the oxygen gas phase space is larger than the hydrogen gas phase space. The device has the beneficial effects that a hydrogen water-gas separator and an oxygen water-gas separator are combined into one, so that the number of parts of a hydrogen production system is reduced; the design of the separator is simplified, hydrogen and oxygen are separated through an internal structure, and the hydrogen and oxygen are prevented from being mixed to form explosive gas; liquid water contained in the hydrogen and the oxygen is collected by the same container.

Description

Technical Field

[0001] This utility model relates to the technical field of hydrogen production by water electrolysis, specifically a water-gas separator for an electrolysis hydrogen production system. Background Technology

[0002] In an electrolytic hydrogen production system, direct current is passed through an electrolyzer, where an electrochemical reaction occurs to produce hydrogen and oxygen. However, the generated hydrogen and oxygen contain a large amount of water, necessitating a water-gas separator to collect and recycle the liquid and remove the gas from the top of the separator. Traditional hydrogen production systems use separate water-gas separators for hydrogen and oxygen, resulting in large, heavy, and costly equipment. This novel design integrates the hydrogen and oxygen water-gas separators into a single unit, using an internal structure to separate the hydrogen and oxygen, preventing the formation of an explosive mixture. Utility Model Content

[0003] The purpose of this invention is to provide a water vapor separator for an electrolytic hydrogen production system, which combines the water vapor separators for hydrogen and oxygen into one unit, and collects the liquid water contained in hydrogen and oxygen in the same container, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a water vapor separator for an electrolytic hydrogen production system, comprising a separator, wherein a partition is disposed within the separator, the partition being longitudinally distributed within the separator, the partition dividing the upper space of the separator into an oxygen gas phase space and a hydrogen gas phase space, a suspension height being formed between the partition and the bottom of the separator, and a liquid phase space being formed in the lower part of the separator, into which liquid is injected, the partition being inserted below the liquid surface, thereby isolating the oxygen gas phase space and the hydrogen gas phase space from each other, the partition being positioned biased towards one side of the separator, the oxygen gas phase space being larger than the hydrogen gas phase space, the oxygen gas phase space being... An oxygen and water mixture inlet is provided on one side wall of the separator, and a hydrogen and water mixture inlet is provided on the other side wall of the separator. An oxygen outlet is provided at the top of the separator on the oxygen gas phase space side, and a hydrogen outlet is provided at the top of the separator on the hydrogen gas phase space side. A water outlet is provided at the bottom of the separator, which is connected to the liquid phase space. A first liquid level detector and a second liquid level detector are installed inside the separator. Both the first liquid level detector and the second liquid level detector are installed at the same height, and their installation positions are higher than the lowest point of the partition.

[0005] Compared with the prior art, the beneficial effects of this utility model are: it combines the water vapor separators for hydrogen and oxygen into one, reducing the number of parts in the hydrogen production system; it simplifies the separator design and separates hydrogen and oxygen through the internal structure, preventing the formation of explosive gases by mixing hydrogen and oxygen; and it collects the liquid water contained in hydrogen and oxygen in the same container. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model.

[0007] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present utility model. Detailed Implementation

[0008] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0009] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0010] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0011] Please see Figure 1-2This utility model provides a technical solution: a water vapor separator for an electrolytic hydrogen production system, including a separator 1, which differs from the prior art in that: the separator 1 has a baffle 2 installed inside it, the baffle 2 is longitudinally distributed inside the separator 1, the baffle 2 divides the upper part of the separator and connects the lower part; the baffle 2 divides the upper space of the separator 1 into an oxygen gas phase space 3 and a hydrogen gas phase space 4, the baffle 2 and the bottom of the separator 1 form a suspension height, the lower part of the separator 1 forms a liquid phase space 5, liquid is injected into the separator 1, the baffle 2 is inserted below the liquid surface, so that the oxygen gas phase space and the hydrogen gas phase space are isolated from each other, the position of the baffle 2 is biased towards one side of the separator 1, because for the PEM electrolyzer, oxygen contains unreacted circulating water and the water flow rate is large; while hydrogen contains less water that permeates from the electrolyzer to the cathode, therefore the position of the baffle of the separator is biased towards one side of the separator, so that the oxygen gas phase space is larger than the hydrogen gas phase space. The oxygen gas phase space is larger than the hydrogen gas phase space. An oxygen and water mixture inlet 6 is provided on the side wall of separator 1 on the oxygen gas phase space side, and a hydrogen and water mixture inlet 7 is provided on the side wall of separator 1 on the hydrogen gas phase space side. An oxygen outlet 8 is provided at the top of separator 1 on the oxygen gas phase space side, and a hydrogen outlet 9 is provided at the top of separator 1 on the hydrogen gas phase space side. A water outlet 10 is provided at the bottom of separator 1, which communicates with the liquid phase space 5. A first liquid level detector 11 and a second liquid level detector 12 are installed inside separator 1. Both the first and second liquid level detectors are installed within the liquid phase space, and the installation heights of the first and second liquid level detectors 11 and 12 are the same, with their installation positions higher than the lowest point of the partition 2.

[0012] In practice, the partition 2 is a vertical flat plate structure.

[0013] In another embodiment of this utility model, the partition 2 is a vertical flat plate, and a horizontally distributed flat plate is provided at the lower end of the vertical flat plate. The vertical flat plate and the horizontal flat plate form a "T" shaped structure. This design can prevent hydrogen and oxygen from impacting the bottom of the separator with the water flow and escaping through the water outlet. The horizontal part of the T-shaped structure plays the role of blocking the gas.

[0014] In specific implementation, the water outlet 10 is connected to a water outlet pipeline, and a shut-off valve 13 is installed on the water outlet pipeline. When either the first liquid level detector or the second liquid level detector detects no liquid level, the system controls the water outlet shut-off valve to close, so as to prevent the separation effect of the liquid phase space on hydrogen and oxygen from failing.

[0015] In specific implementation, the horizontal cross-sectional shape of the outer shell of the separator 1 can be circular or square.

[0016] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water-gas separator for an electrolytic hydrogen production system, comprising a separator (1), characterized in that: The separator (1) is provided with a partition plate (2) inside, the partition plate (2) is longitudinally distributed inside the separator (1), the partition plate (2) divides the upper space of the separator (1) into an oxygen gas phase space (3) and a hydrogen gas phase space (4), the partition plate (2) and the bottom of the separator (1) form a suspended height, the lower part of the separator (1) forms a liquid phase space (5), the separator (1) is filled with liquid, the partition plate (2) is inserted below the liquid level, so that the oxygen gas phase space and the hydrogen gas phase space are isolated from each other, the position of the partition plate (2) is deviated to one side of the separator (1), the oxygen gas phase space is larger than the hydrogen gas phase space, the oxygen gas phase space side of the separator (1) is provided with an oxygen and water mixture inlet (6) on the side wall, the hydrogen gas phase space side of the separator (1) is provided with a hydrogen and water mixture inlet (7) on the side wall, the oxygen gas phase space side of the separator (1) is provided with an oxygen outlet (8) on the top, the hydrogen gas phase space side of the separator (1) is provided with a hydrogen outlet (9) on the top, the bottom of the separator (1) is provided with a water outlet (10), the water outlet (10) is communicated with the liquid phase space (5), the separator (1) is provided with a first liquid level detector (11) and a second liquid level detector (12), the first liquid level detector and the second liquid level detector are installed in the liquid phase space, the first liquid level detector (11) and the second liquid level detector (12) are installed at the same height, and the installation positions of the first liquid level detector (11) and the second liquid level detector (12) are higher than the lowest point of the partition plate (2).

2. A water-gas separator for an electrolytic hydrogen generation system according to claim 1, characterized by: The partition plate (2) is a vertical plate structure.

3. A water-gas separator for an electrolytic hydrogen generation system according to claim 1, characterized by: The partition plate (2) is a vertical plate, and the lower end of the vertical plate is provided with a horizontally distributed horizontal plate, and the vertical plate and the horizontal plate form a "T" type structure.

4. A water-gas separator for an electrolytic hydrogen generation system according to claim 1, characterized by: The water outlet (10) is connected with a water outlet pipeline, and a shut-off valve (13) is arranged on the water outlet pipeline.

5. A water-gas separator for an electrolytic hydrogen generation system according to claim 1, characterized by: The horizontal cross-sectional shape of the shell of the separator (1) can be circular or square.

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