Biogas gas-liquid separator

Abstract

The utility model discloses a marsh gas gas -liquid separator belongs to marsh gas processing technical field, and it includes marsh gas gas -liquid separator jar body, gas collection cavity, water collection cavity and separation chamber, and two cyclone plates are connected with welding in the marsh gas gas -liquid separator jar body. The marsh gas gas -liquid separator, through centrifugal separation and collision separation two mechanisms, make the liquid drop be thrown out by centrifugal force, and utilize wall body to capture and gather, and then improve separation efficiency and effect, improve marsh gas purity, and the drainage plate circular table shape design can gather liquid to the lowest point rapidly, prevent the liquid separated to be carried by gas and enter the gas collection cavity again, and through drainage U type water seal, rely on gravity and automatically, smoothly discharge jar body outside, and the internal structure of marsh gas gas -liquid separator jar body is simple and smooth, has no complex and easy to block parts, and the design of cyclone plate and drainage plate makes liquid and impurities can gather rapidly, and is not easy to adhere and accumulate.

Description

Technical Field

[0001] This utility model belongs to the field of biogas treatment technology, specifically a biogas gas-liquid separator. Background Technology

[0002] During the biogas production process, a large amount of liquid foam and particulate matter are carried. If they are not effectively separated from the gas, these droplets and impurities will enter the subsequent biogas purification, storage and utilization system, leading to a series of problems such as pipeline blockage, equipment corrosion, and reduced efficiency of boilers or generators.

[0003] Most existing biogas gas-liquid separators use simple gravity settling or baffle separation, which are usually simple in structure and have limited separation efficiency. They are not good at capturing fine droplets and foam. At the same time, some separators have complex internal structures and are prone to clogging, which makes it difficult for the separated liquid to be discharged smoothly, increasing the difficulty and frequency of cleaning and maintenance. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a biogas gas-liquid separator, which solves the problem that traditional biogas gas-liquid separators use simple gravity settling or baffle flow separation, resulting in limited separation efficiency due to simple structure and poor capture effect of fine droplets, thus affecting the separation effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a biogas gas-liquid separator, comprising a biogas gas-liquid separator tank, a gas collecting chamber, a water collecting chamber, and a separation chamber. Two swirl plates are welded to the inside of the biogas gas-liquid separator tank. Multiple drainage plates are connected to the inner wall of the biogas gas-liquid separator tank. A biogas inlet pipe is connected to the biogas gas-liquid separator tank. The inner cavity of the biogas gas-liquid separator tank is divided into upper, middle, and lower sections by the two swirl plates. The gas collecting chamber is located above the two swirl plates, the water collecting chamber is located below the two swirl plates, and the separation chamber is located between the two swirl plates. A biogas outlet pipe is connected to the top of the biogas gas-liquid separator tank, and a drainage U-shaped water seal is connected to the bottom of the water collecting chamber.

[0006] As a further embodiment of this utility model: the angle between the blades of the swirl plate and the horizontal plane is 30°-60°.

[0007] As a further embodiment of this utility model: the drainage plate is a frustum structure, the upper part of the frustum of the drainage plate faces the center of the biogas gas-liquid separator tank, and the bottom edge of the frustum of the drainage plate is fixedly connected to the inner wall of the biogas gas-liquid separator tank and arranged in multiple groups inside the biogas gas-liquid separator tank.

[0008] As a further embodiment of this utility model: there are two biogas inlet pipes, and the two biogas inlet pipes are centrally symmetrical and tangentially connected to the side wall of the middle part of the biogas gas-liquid separator tank and connected to the water collection chamber.

[0009] As a further embodiment of this utility model: the gas collection chamber is connected to the biogas outlet pipe, and the water collection chamber is connected to the drainage U-shaped water seal.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up a swirl plate, a drainage plate, a biogas inlet pipe, a biogas outlet pipe, and a drainage U-shaped water seal, biogas mixed with liquid droplets enters the biogas gas-liquid separator tank through the biogas inlet pipe. This causes the biogas to enter the top of the water collection chamber tangentially, generating a high-speed swirling flow. Under centrifugal force, most of the liquid droplets and impurities are thrown towards the tank wall. Then, the biogas carrying fine liquid droplets continues to rise, causing the droplets to be captured by the walls of the swirl plate and the drainage plate and condensed into larger droplets. The separated clean biogas is discharged from the biogas outlet pipe, while the droplets generated by the collision with the drainage plate and the collision with the blades of the swirl plate eventually collect along the wall and drip into the water collection chamber. In the chamber, when the liquid accumulates to a certain height in the water collection chamber, it is automatically discharged by gravity through the drainage U-shaped water seal. Through centrifugal separation and collision separation mechanisms, the liquid droplets are thrown out by centrifugal force and captured and collected by the wall, thereby improving the separation efficiency and effect. The unique frustum-shaped structure of the drainage plate can quickly collect the separated liquid to the lowest point, preventing the separated liquid from being carried back into the gas collection chamber by the gas. It is then automatically and smoothly discharged out of the tank by gravity through the drainage U-shaped water seal, forming a smooth liquid loop. Moreover, the internal structure of the biogas gas-liquid separator tank is simple and smooth, without complex and easily clogged parts. The design of the swirl plate and drainage plate allows the liquid and impurities to slide down and collect quickly, making it difficult for them to adhere and accumulate. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the biogas gas-liquid separator tank of this utility model; Figure 3 This is a schematic diagram of the exploded structure of the biogas gas-liquid separator tank of this utility model; Figure 4 This is a schematic diagram of the top view of the tank structure of the biogas gas-liquid separator of this utility model; In the diagram: 1. Biogas gas-liquid separator tank; 2. Swirl plate; 3. Drainage plate; 4. Biogas inlet pipe; 5. Gas collection chamber; 6. Biogas outlet pipe; 7. Water collection chamber; 8. Drainage U-shaped water seal; 9. Separation chamber. Detailed Implementation

[0012] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0013] like Figure 1-4 As shown, this utility model provides a technical solution: a biogas gas-liquid separator, including a biogas gas-liquid separator tank 1, a gas collection chamber 5, a water collection chamber 7, and a separation chamber 9. Two swirl plates 2 are welded inside the biogas gas-liquid separator tank 1. The blades of the swirl plates 2 have an angle of 30°-60° with the horizontal plane. The inclined design of the blades of the swirl plates 2 can ensure that biogas passes through the gap between the blades, increase the contact area between the droplets and the blades, and guide the captured droplets to slide down the blades quickly, avoiding the droplets from being re-entrained by the airflow after being retained.

[0014] Multiple drainage plates 3 are connected to the inner wall of the biogas gas-liquid separator tank 1. Each drainage plate 3 is a frustum structure. The upper part of the frustum of the drainage plate 3 faces the center of the biogas gas-liquid separator tank 1. The bottom edge of the frustum of the drainage plate 3 is fixedly connected to the inner wall of the biogas gas-liquid separator tank 1 and arranged in multiple groups inside the biogas gas-liquid separator tank 1. The multiple drainage plates 3 are arranged in a ring array inside the biogas gas-liquid separator tank 1 to form a stepped interception layer. The sloping surface of the frustum is conducive to the adhesion and guidance of liquid droplets, reducing secondary entrainment.

[0015] The biogas gas-liquid separator tank 1 is connected to a biogas inlet pipe 4. There are two biogas inlet pipes 4, which are centrally symmetrical and tangentially connected to the side wall of the middle part of the biogas gas-liquid separator tank 1 and connected to the water collection chamber 7. Through the two centrally symmetrical and tangentially distributed biogas inlet pipes 4, the biogas can be guided into the interior of the biogas gas-liquid separator tank 1 in a spiral trajectory. Then, the centrifugal force is used to throw the water mist, impurities and other liquids mixed in the biogas toward the tank wall to complete the separation work.

[0016] The inner cavity of the biogas gas-liquid separator tank 1 is divided into three parts: upper, middle, and lower, by two swirl plates 2. The gas collection chamber 5 is located above the two swirl plates 2, the water collection chamber 7 is located below the two swirl plates 2, and the separation chamber 9 is located between the two swirl plates 2. A biogas outlet pipe 6 is connected to the upper part of the biogas gas-liquid separator tank 1, and a drainage U-shaped water seal 8 is connected to the lower part of the water collection chamber 7. The gas collection chamber 5 is connected to the biogas outlet pipe 6, and the water collection chamber 7 is connected to the drainage U-shaped water seal 8. The drainage U-shaped water seal 8 can form a stable liquid seal barrier in the channel, effectively blocking biogas from leaking from the drain outlet, and at the same time preventing outside air from flowing back into the interior of the biogas gas-liquid separator tank 1.

[0017] The working principle of this utility model is as follows: Biogas mixed with liquid droplets enters the biogas gas-liquid separator tank 1 through biogas inlet pipe 4. Since the two biogas inlet pipes 4 are tangentially connected to the biogas gas-liquid separator tank 1, the biogas enters the top of the water collection chamber 7 tangentially, creating a high-speed swirling flow. Under centrifugal force, most of the liquid droplets and impurities are thrown towards the tank wall, achieving initial separation. The biogas carrying fine liquid droplets continues to rise, impacting the lower surface of the blades of the swirl plate 2 or the side of the drainage plate 3. The droplets are then dispersed by the swirl plate 2 and... The wall of the drainage plate 3 captures and condenses into larger droplets, thereby improving the separation efficiency and effect through two mechanisms: centrifugal separation and collision capture. The separated clean biogas passes through the gap between the blades of the swirl plate 2 and enters the gas collection chamber 5, and is finally discharged from the biogas outlet pipe 6. The droplets generated by the collision with the drainage plate 3 and the droplets generated by the collision with the blades of the swirl plate 2 will eventually collect along the wall and drip into the water collection chamber 7. When the liquid accumulates to a certain height in the water collection chamber 7, it is automatically discharged by gravity through the drainage U-shaped water seal 8.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 based on the specific circumstances.

[0019] The preferred embodiments of this patent have been described in detail above. However, this patent 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 spirit of this patent.

Claims

1. A biogas gas-liquid separator, comprising a biogas gas-liquid separator tank (1), a gas collection chamber (5), a water collection chamber (7), and a separation chamber (9), characterized in that: The biogas gas-liquid separator tank (1) has two swirl plates (2) welded inside. Multiple drainage plates (3) are connected to the inner wall of the biogas gas-liquid separator tank (1). A biogas inlet pipe (4) is connected to the biogas gas-liquid separator tank (1). The inner cavity of the biogas gas-liquid separator tank (1) is divided into three parts: upper, middle and lower by the two swirl plates (2). The gas collection chamber (5) is located above the two swirl plates (2). The water collection chamber (7) is located below the two swirl plates (2). The separation chamber (9) is located between the two swirl plates (2). A biogas outlet pipe (6) is connected above the biogas gas-liquid separator tank (1). A drainage U-shaped water seal (8) is connected below the water collection chamber (7).

2. The biogas gas-liquid separator according to claim 1, characterized in that: The blades of the swirl plate (2) have an angle of 30°-60° with the horizontal plane.

3. A biogas gas-liquid separator according to claim 1, characterized in that: The drainage board (3) is a single truncated cone structure. The upper part of the truncated cone of the drainage board (3) faces the center of the biogas gas-liquid separator tank (1). The bottom edge of the truncated cone of the drainage board (3) is fixedly connected to the inner wall of the biogas gas-liquid separator tank (1) and arranged in multiple groups inside the biogas gas-liquid separator tank (1).

4. A biogas gas-liquid separator according to claim 1, characterized in that: There are two biogas inlet pipes (4), and the two biogas inlet pipes (4) are centrally symmetrical and tangentially connected to the side wall of the middle part of the biogas gas-liquid separator tank (1) and connected to the water collection chamber (7).

5. A biogas gas-liquid separator according to claim 1, characterized in that: The gas collection chamber (5) is connected to the biogas outlet pipe (6), and the water collection chamber (7) is connected to the drainage U-shaped water seal (8).

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