Gas-liquid separator

Abstract

The utility model discloses a gas-liquid separator, and belongs to the field of hydrogen production by electrolyzing water. Comprising a barrel, a mixed liquid inlet and an alkali liquid outlet are formed in the lower end of the barrel, a gas outlet is formed in the upper end of the barrel, the mixed liquid inlet is longitudinally arranged, and a guide plate is arranged on the inner wall of the barrel on the same side as the mixed liquid inlet. The guide plates are arranged in a staggered mode in the horizontal direction of the inner walls of the two sides and are not overlapped in the vertical direction. The included angle between the guide plate and the inner wall is 30 degrees. And a baffle plate is transversely arranged on the inner wall of the barrel body on the same side as the alkali liquor outlet so as to destroy vortex in the vertical direction caused by strong suction force of the alkali liquor pump. The baffles are arranged in a staggered mode in the horizontal direction of the inner walls of the two sides. The baffles are overlapped in the vertical direction. The gas-liquid separator provided by the utility model can achieve the effect of improving the gas-liquid separation efficiency on the basis of ensuring the stability of the liquid level.

Description

Technical Field

[0001] The utility model relates to a device for producing hydrogen by electrolyzing water, in particular to a gas-liquid separator. Background Art

[0002] In the current water electrolysis hydrogen production industry, hydrogen and oxygen separators, as gas-liquid separation vessels, play a crucial role in separating hydrogen and oxygen from alkaline liquor. Optimizing the separation area and rate requires comprehensive consideration to achieve optimal gas-liquid separation while reducing vessel costs. However, poor separation results in the alkaline liquor circulating back into the electrolyzer containing a large amount of unseparated hydrogen and oxygen, reducing product purity and potentially causing explosions.

[0003] The gas-liquid separators in the prior art mostly adopt a lateral liquid inlet method, mainly because the lateral liquid inlet can make the liquid level more stable, but it has the defect of poor separation effect. Summary of the Invention

[0004] Purpose of the utility model: The purpose of the utility model is to provide a gas-liquid separator that improves the gas-liquid separation efficiency while ensuring liquid level stability.

[0005] Technical solution: The gas-liquid separator described in the utility model includes a cylinder, a mixed liquid inlet and an alkali liquid outlet are opened at the lower end of the cylinder, a gas outlet is opened at the upper end of the cylinder, the mixed liquid inlet is arranged longitudinally, and a guide plate is provided on the inner wall of the cylinder on the same side as the mixed liquid inlet.

[0006] Preferably, the guide plates are staggered in the horizontal direction of the inner walls on both sides and do not overlap in the vertical direction.

[0007] Preferably, the included angle between the guide plate and the inner wall is 20° to 50°.

[0008] Further preferably, the included angle between the guide plate and the inner wall is 30°.

[0009] Preferably, a baffle is laterally provided on the inner wall of the cylinder on the same side as the alkali solution outlet to destroy the vertical vortex caused by the strong suction of the alkali solution pump.

[0010] Preferably, the baffles are staggered in the horizontal direction of the inner walls on both sides.

[0011] Preferably, the baffles overlap in the vertical direction.

[0012] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: (1) by changing the mixed liquid inlet of the gas-liquid separator from the traditional horizontal to the vertical, and adding a guide plate, the efficiency of gas-liquid separation is greatly improved on the basis of ensuring the stability of the liquid level; (2) the efficiency of separating hydrogen and oxygen gases from the alkali solution is improved, the separation area is reduced, the size and weight of the container are reduced, and the cost is saved; (3) a plurality of baffles are set in the alkali solution return path, which can destroy the vertical vortex caused by the strong suction of the alkali solution pump, thereby protecting the bubbles close to the liquid surface from the strong suction and allowing them to float smoothly to complete the separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall appearance of the utility model. DETAILED DESCRIPTION

[0014] The technical solution of the present utility model will be further described below in conjunction with the embodiments.

[0015] As shown in the figure, the gas-liquid separator described in the utility model includes a cylinder 1, a mixed liquid inlet 2 and an alkaline liquid outlet 3 are opened at the lower end of the cylinder 1, and a gas outlet 4 is opened at the upper end of the cylinder 1. The mixed liquid inlet 2 is arranged longitudinally, and a guide plate 5 is provided on the inner wall of the cylinder 1 on the same side as the mixed liquid inlet 2.

[0016] The guide plates 5 are staggered in the horizontal direction of the inner walls on both sides and do not overlap in the vertical direction.

[0017] The included angle between the guide plate 5 and the inner wall is 30°.

[0018] A baffle 6 is laterally provided on the inner wall of the cylinder 1 on the same side as the alkali solution outlet 3 to destroy the vertical vortex caused by the strong suction force of the alkali solution pump.

[0019] The baffles 6 are staggered in the horizontal direction of the inner walls on both sides, and overlap in the vertical direction.

[0020] The working principle of the gas-liquid separator described in the present invention is as follows: the mixed liquid inlet is changed from the traditional horizontal to the vertical, and a guide plate that can rotate the liquid is added to the inner wall of the container. Under the power drive of the circulation pump, the gas-liquid mixed solution entering from the mixed liquid inlet utilizes the high initial velocity and swirl effect when the alkali solution enters the container, and the flow direction of the liquid and gas changes. It spirals up along the guide plate and is quickly pushed to the boundary between the gas and liquid phases for gas-liquid separation, so that the internal bubbles float up quickly and eventually break away from the liquid surface. The time for the bubbles in the alkali solution to naturally float upward is shortened, and the stability of the liquid level can be guaranteed. In traditional gas-liquid separators, the bubbles float up from the bottom of the container to the gas-liquid interface by the action of buoyancy. In comparison, the gas-liquid separation speed of the gas-liquid separator described in the present invention is fast, the efficiency of separating the alkali solution and the gas is greatly improved, the effect of accelerating the gas-liquid separation is achieved, the volume and weight of the separator are greatly reduced, and the equipment cost is reduced.

[0021] The utility model also adds multiple baffles in the alkali solution return process, whose function is to destroy the vertical vortex caused by the strong suction of the alkali solution pump, thereby protecting the bubbles close to the liquid surface from the influence of the strong suction force, allowing them to float up smoothly and separate from the alkali solution, further improving the gas-liquid separation efficiency.

Claims

1. A gas-liquid separator, comprising a cylinder (1), a mixed liquid inlet (2) and an alkaline liquid outlet (3) being provided at the lower end of the cylinder (1), and a gas outlet (4) being provided at the upper end of the cylinder (1), characterized in that: The mixed liquid inlet (2) is arranged longitudinally, and a guide plate (5) is provided on the inner wall of the cylinder (1) on the same side as the mixed liquid inlet (2).

2. The gas-liquid separator according to claim 1, characterized in that The guide plates (5) are staggered in the horizontal direction of the inner walls on both sides.

3. The gas-liquid separator according to claim 1, characterized in that The included angle between the guide plate (5) and the inner wall is 20° to 50°.

4. The gas-liquid separator according to claim 3, characterized in that The included angle between the guide plate (5) and the inner wall is 30°.

5. The gas-liquid separator according to claim 1, characterized in that A baffle (6) is transversely arranged on the inner wall of the cylinder (1) on the same side as the alkali solution outlet (3).

6. The gas-liquid separator according to claim 5, characterized in that The baffles (6) are staggered in the horizontal direction of the inner walls on both sides.

7. The gas-liquid separator according to claim 6, characterized in that The baffles (6) overlap in the vertical direction.

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