Gas-liquid separator

Abstract

The gas-liquid separator comprises a tank body, an inlet is formed in one end of the tank body, a liquid outlet is formed in the bottom, close to the other end, of the tank body, a gas outlet is formed in the top, close to the other end, of the tank body, the inlet comprises a gas phase inlet and a liquid phase inlet, and a pre-separation tank is arranged at the end, provided with the inlet, of the tank body; a two-phase opening is formed in the end, away from the tank body, of the pre-separation tank, a gas-phase outlet and a liquid-phase outlet are formed in the end, close to the tank body, of the pre-separation tank, the gas-phase outlet is connected with the gas-phase inlet through a pipeline, and the liquid-phase outlet is connected with the liquid-phase inlet through a pipeline. The gas-liquid separator has the advantage of improving the gas-liquid separation effect.

Description

Technical Field

[0001] This application relates to the field of hydrogen production technology by water electrolysis, and in particular to a gas-liquid separator. Background Technology

[0002] The gas-liquid separator is an important component in water electrolysis hydrogen production equipment. After water electrolysis, the alkaline solution and hydrogen (oxygen) enter the separator from one side. Under the action of gravity, the gas flows upward and the liquid droplets flow downward. Sufficiently large droplets fall at a speed exceeding the rising speed of the gas and separate from the gas. After the gas and liquid are separated, they leave the gas-liquid separator from the gas outlet and liquid outlet on the other side, respectively.

[0003] In existing gas-liquid separators, the gas-liquid mixture enters the separator from one side, which severely impacts the separation liquid surface. This causes some of the separated gas to be entrained by the liquid and fall below the separation liquid surface, while some liquid leaves the separator with the gas. This results in poor separation efficiency, with the separated gas carrying a high degree of alkali content, which has a strong adverse effect on subsequent processing and may even damage downstream equipment. Utility Model Content

[0004] To improve the gas-liquid separation effect, this application provides a gas-liquid separator.

[0005] The gas-liquid separator provided in this application adopts the following technical solution:

[0006] A gas-liquid separator includes a tank. One end of the tank has an inlet, a liquid outlet is located near the bottom of the other end, and a gas outlet is located near the top of the other end. The inlet includes a gas phase inlet and a liquid phase inlet. A pre-separation tank is provided at the end of the tank with the inlet. The pre-separation tank has a two-phase port at the end away from the tank. The pre-separation tank has a gas phase outlet and a liquid phase outlet at the end near the tank. The gas phase outlet is connected to the gas phase inlet through a pipe, and the liquid phase outlet is connected to the liquid phase inlet through a pipe.

[0007] By adopting the above technical solution, the pre-separation tank can perform pre-gas-liquid phase separation on the gas after electrolysis, thereby reducing the amount of liquid contained in the gas entering the tank and the liquid content in the gas after gas-liquid separation in the tank, thus improving the gas-liquid separation effect.

[0008] Optionally, a plurality of baffles are fixedly provided inside the tank along the length of the tank, and the baffles are fixedly provided at the bottom of the tank.

[0009] By adopting the above technical solution, the baffle plate can reduce the impact of liquid entering the tank.

[0010] Optionally, the baffles are staggered, with adjacent baffles fixed at both ends of the tank width direction.

[0011] By adopting the above technical solution, the staggered baffles can increase the flow distance of the liquid, thereby prolonging the liquid flow time, providing sufficient time for bubbles in the liquid to detach from the liquid, and reducing the probability of the liquid containing gas.

[0012] Optionally, an anti-vortex plate is installed inside the tank at the liquid outlet.

[0013] By adopting the above technical solution, the anti-vortex plate can reduce the probability of vortex formation during exhaust, thereby reducing the probability of the vortex carrying away some gas and reducing the probability of gas in the liquid.

[0014] Optionally, a baffle is installed inside the tank at the gas outlet.

[0015] By adopting the above technical solution, the baffle can block the gas when it leaves through the gas outlet, thereby diverting the gas and causing other small liquid droplets contained within it to fall off due to impact, thus reducing the probability that the gas contains liquid.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] The pre-separation tank can perform pre-gas-liquid phase separation on the gas after electrolysis, thereby reducing the amount of liquid in the gas entering the tank and the liquid content in the gas after gas-liquid separation in the tank, thus improving the gas-liquid separation effect.

[0018] The baffles can reduce the impact of liquid entering the tank. The staggered baffles can increase the flow distance of the liquid, thereby prolonging the flow time of the liquid and providing enough time for bubbles in the liquid to escape from the liquid, thus reducing the probability of the liquid containing gas.

[0019] The anti-vortex plate can reduce the probability of vortex formation during exhaust, thereby reducing the probability of the vortex carrying away some gas and reducing the probability of gas in the liquid.

[0020] The baffle is designed to block the gas as it exits through the gas outlet, thereby redirecting the gas and causing any small liquid droplets it contains to fall off due to impact, thus reducing the probability that the gas contains liquid. Attached Figure Description

[0021] Figure 1 This is a vertical sectional view of the overall structure of this embodiment.

[0022] Figure 2 This is a cross-sectional view of the overall structure of this embodiment in the horizontal direction.

[0023] Explanation of reference numerals in the attached diagram: 1. Tank body; 2. Inlet; 21. Gas phase inlet; 22. Liquid phase inlet; 3. Liquid outlet; 4. Gas outlet; 5. Pre-separation tank; 6. Two-phase inlet; 7. Gas phase outlet; 8. Liquid phase outlet; 9. Pipeline; 10. Baffle; 11. Anti-vortex plate; 12. Baffle. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0025] First, it should be noted that in the description of this application, the use of directional terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for descriptive purposes and do not indicate or imply that the device or component 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 application. Furthermore, the use of numerical quantifiers such as "first," "second," and "third" is for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, in this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, interference fits, transition fits, or integral connections; they can refer to direct connections or indirect connections through an intermediate medium. Therefore, those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] This application discloses a gas-liquid separator, referring to... Figure 1The system includes a tank 1 mounted on the ground. One end of the tank 1 has an inlet 2 along its length, the bottom of the other end near its length has a liquid outlet 3, and the top of the other end near its length has a gas outlet 4. The inlet 2 includes a gas inlet 21 and a liquid inlet 22. A pre-separation tank 5 is located at the inlet end of the tank 1. The pre-separation tank 5 has a two-phase outlet 6 at its end away from the tank 1. The pre-separation tank 5 has a gas outlet 7 and a liquid outlet 8 at its end near the tank 1. The gas outlet 7 is connected to the gas inlet 21 via a pipe 9, and the liquid outlet 8 is connected to the liquid inlet 21 via a pipe 9. Connected to 2, the hydrogen or oxygen produced by electrolysis enters the pre-separation tank 5 through the two-phase port 6. After gas-liquid separation in the pre-separation tank 5, the gas with a small amount of liquid leaves the pre-separation tank 5 from the gas phase outlet 7 and then enters the tank body 1 from the gas phase inlet 21. The liquid with a small amount of gas leaves the pre-separation tank 5 from the liquid phase outlet 8 and then enters the tank body 1 through the liquid phase inlet 22. Gas and liquid are separated again in the tank body 1. Since the pre-separation tank 5 has performed preliminary separation, the second separation will further reduce the gas content in the liquid and the liquid content in the gas, thereby improving the gas-liquid separation effect.

[0027] Reference Figure 1 and Figure 2 Several baffles 10 are fixedly installed inside the tank body 1 along the length direction of the tank body 1. The baffles 10 are welded and fixed to the bottom of the tank body 1. The baffles 10 are staggered, and adjacent baffles 10 are respectively welded and fixed to both ends of the width direction of the tank body 1. The baffles 10 can reduce the impact of liquid entering the tank body 1 on the liquid. At the same time, the staggered baffles 10 can increase the flow distance of the liquid, thereby prolonging the liquid flow time and providing sufficient time for bubbles in the liquid to detach from the liquid, thus reducing the probability of the liquid containing gas.

[0028] Reference Figure 1 and Figure 2 An anti-vortex plate 11 is installed inside the tank body 1 at the liquid outlet 3. The anti-vortex plate 11 is fixed inside the tank body 1 by a connecting rod and is spaced apart from the liquid outlet 3. After the anti-vortex plate 11 blocks the liquid flowing directly to the liquid outlet 3, the liquid flows into the liquid outlet 3 from the side of the anti-vortex plate 11, thereby reducing the generation of vortices. The generation of vortices will entrain some gas, which will lead to a decrease in the purity of the liquid. The setting of the anti-vortex plate 11 can reduce the probability of forming vortices when exhausting, thereby reducing the probability of vortices entraining some gas and reducing the probability of gas in the liquid.

[0029] Reference Figure 1 and Figure 2A baffle 12 is installed inside the tank 1 at the gas outlet 4. The baffle 12 is fixed inside the tank 1 by a connecting rod and is spaced apart from the gas outlet 4. The baffle 12 blocks the gas flowing directly to the gas outlet 4, allowing the gas to enter the gas outlet 4 from the side of the baffle 12. The baffle 12 can block the gas when it leaves the gas outlet 4, thereby changing the gas path and causing other small liquid droplets contained in the gas to fall off due to impact, reducing the probability that the gas contains liquid.

[0030] The implementation principle of this application embodiment is as follows: Hydrogen or oxygen generated by electrolysis enters the pre-separation tank 5 through the two-phase port 6. After gas-liquid separation in the pre-separation tank 5, the gas with a small amount of liquid leaves the pre-separation tank 5 from the gas phase outlet 7, and then enters the tank body 1 from the gas phase inlet 21. The liquid with a small amount of gas leaves the pre-separation tank 5 from the liquid phase outlet 8, and then enters the tank body 1 through the liquid phase inlet 22. The gas with a small amount of liquid continues to separate in the tank body 1 and hits the baffle 12 before entering the gas outlet 4, so that the liquid droplets contained in the gas fall off. The gas after the second gas-liquid separation is discharged from the tank body 1 from the gas outlet 4. The liquid with a small amount of gas is gradually discharged after passing through the baffle 10, and then discharged from the tank body 1 through the liquid outlet 3, thereby realizing the second separation of gas and liquid.

[0031] It should be noted that the above embodiments are only used to illustrate this application and are not intended to limit the technical solutions described in this application. Although this specification has described this application in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to this application. All technical solutions and improvements that do not depart from the spirit and scope of this application should be covered within the scope of the claims of this application.

Claims

1. A gas-liquid separator comprising a tank body (1), the tank body (1) being provided with an inlet (2) at one end, the tank body (1) being provided with a liquid outlet (3) at the bottom near the other end, and a gas outlet (4) at the top near the other end, characterized in that: The inlet (2) includes a gas phase inlet (21) and a liquid phase inlet (22). A pre-separation tank (5) is provided at one end of the tank body (1). A two-phase port (6) is provided at the end of the pre-separation tank (5) away from the tank body (1). A gas phase outlet (7) and a liquid phase outlet (8) are provided at the end of the pre-separation tank (5) close to the tank body (1). The gas phase outlet (7) is connected to the gas phase inlet (21) through a pipe (9), and the liquid phase outlet (8) is connected to the liquid phase inlet (22) through a pipe (9).

2. A gas-liquid separator according to claim 1, characterized in that: Several baffles (10) are fixedly installed inside the tank (1) along the length of the tank (1), and the baffles (10) are fixedly installed at the bottom of the tank (1).

3. A gas-liquid separator according to claim 2, wherein: The baffles (10) are staggered, and adjacent baffles (10) are fixed at both ends of the tank body (1) in the width direction.

4. A gas-liquid separator according to claim 3, wherein: The tank (1) is equipped with an anti-vortex plate (11) at the liquid outlet (3).

5. A gas-liquid separator according to claim 4, characterized in that: A baffle (12) is installed inside the tank (1) at the gas outlet (4).

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