A high-pressure gas-liquid separation and liquid return device

Abstract

This invention discloses a high-pressure gas-liquid separation and return device, comprising a first high-pressure tank and a second high-pressure tank. The first high-pressure tank has an inlet pipe at its top, extending to its bottom. Inside the first high-pressure tank, from top to bottom, are arranged a three-stage gradient sintered filter element, a baffle plate, and a flow deflector. The upper part of the first high-pressure tank is connected to the second high-pressure tank via a gas pipe. The second high-pressure tank has a fiber filter surface, an outlet at its top, and a liquid return port at its bottom. This device has a compact structure, can operate efficiently under high pressure, exhibits excellent separation efficiency, significantly reduces liquid entrainment, and meets the high-pressure gas-liquid separation requirements of many fields such as chemical engineering and energy.

Description

Technical Field

[0001] This utility model relates to the field of gas-liquid separation technology, specifically to a high-pressure gas-liquid separation and liquid return device. Background Technology

[0002] In modern industrial production, high-pressure gas-liquid separation is crucial, as many fields, such as petrochemicals and natural gas processing, require the separation of liquid impurities from high-pressure gases. However, existing separation devices suffer from numerous problems under high-pressure environments: low separation efficiency, significant liquid entrainment in the gas, affecting the accuracy and safety of subsequent processes; complex structure, high maintenance costs, poor stability, and susceptibility to malfunctions; imperfect liquid return functions, leading to resource waste and safety hazards; and difficulty in adapting to diverse needs under different operating conditions.

[0003] In conclusion, there is an urgent need for a new type of separation device in the field of high-pressure gas-liquid separation that is efficient, simple in structure, stable and reliable, has a complete liquid return function, and is highly adaptable, in order to meet the high standards of modern industrial production. Utility Model Content

[0004] To address the problems of incomplete separation and complex structure in existing gas-liquid separation devices, this invention provides a high-pressure gas-liquid separation and liquid return device to solve the aforementioned technical defects.

[0005] This utility model proposes a high-pressure gas-liquid separation and liquid return device, which includes: a first high-pressure tank and a second high-pressure tank. The first high-pressure tank is provided with an air inlet pipe at the top, which extends from the top to the bottom of the first high-pressure tank. Inside the first high-pressure tank, a three-stage gradient sintered filter element, a baffle plate, and a flow deflector are arranged sequentially from top to bottom. The upper part of the first high-pressure tank is connected to the second high-pressure tank through a gas pipe. The second high-pressure tank is provided with a fiber filter surface, and the top of the second high-pressure tank is provided with an air outlet, and the bottom of the second high-pressure tank is provided with a liquid return port.

[0006] Preferably, the three-stage gradient sintered filter element includes a first-stage sintered filter element, a second-stage sintered filter element, and a third-stage sintered filter element, wherein the first-stage sintered filter element is a sintered filter element with a thickness of 8-10 mm and a pore size of 30 micrometers; the second-stage sintered filter element is a sintered filter element with a thickness of 12-20 mm and a pore size of 80 micrometers; and the third-stage sintered filter element is a sintered filter element with a thickness of 30-40 mm and a pore size of 150 micrometers.

[0007] In a further preferred embodiment, a first-stage sintered filter element, a second-stage sintered filter element, and a third-stage sintered filter element are sequentially arranged from bottom to top inside the first high-pressure tank.

[0008] Preferably, the upper part of the first high-pressure tank is connected to the second high-pressure tank via a gas pipeline, and the gas pipeline extends into the bottom of the second high-pressure tank.

[0009] Preferably, both the first high-pressure tank and the second high-pressure tank are vertically arranged.

[0010] Preferably, the internal space of the first high-pressure tank is provided with a liquid sedimentation zone, a filtration zone and a gas separation zone from bottom to top, wherein the liquid sedimentation zone occupies 1 / 3 of the total height of the tank and is located at the bottom of the tank; the filtration zone occupies 1 / 3 of the total height of the tank and is located above the liquid sedimentation zone; and the gas separation zone occupies 1 / 3 of the total height of the tank and is located above the filtration zone.

[0011] More preferably, the air inlet pipe is inserted from the top of the first high-pressure tank and extends to the liquid sedimentation zone at the bottom of the first high-pressure tank.

[0012] Preferably, a liquid return port is provided at the bottom of the first high-pressure tank.

[0013] Preferably, the baffle plate is composed of a spiral guide vane and an inclined baffle, and the angle between the surface of the inclined baffle and the horizontal plane is 30°-60°.

[0014] Preferably, the thickness of the fiber filter surface is 10-30 mm.

[0015] Compared with the prior art, the beneficial results of this utility model are as follows:

[0016] (1) High efficiency separation: The three-stage gradient sintered filter element can filter liquid particles of different sizes in the gas-liquid mixture step by step. The first stage filters out larger liquid particles and impurities, the second stage filters smaller liquid particles, and the third stage performs finer filtration. With the baffle plate, the gas rotates and rises, increasing the contact area and time between the gas and the filter element. At the same time, it helps the liquid settle to the liquid sedimentation zone, resulting in high separation efficiency and effectively reducing the amount of liquid entrained in the gas.

[0017] (2) Simple and compact structure: The whole device consists of two vertically placed high-pressure tanks and related filter components. The layout is reasonable and compact, which reduces the manufacturing cost and maintenance difficulty of the equipment and makes it easy to install and operate.

[0018] (3) Good liquid return function: The bottom of the first high-pressure tank is equipped with a liquid return port, and the bottom of the second high-pressure tank is also equipped with a liquid return port. The separated liquid can be returned to the corresponding system or container in a timely manner to avoid the safety hazards caused by liquid accumulation, realize the recycling of resources, and improve the resource utilization rate.

[0019] (4) Stable and reliable operation: The tank is set vertically, the internal structure is reasonably designed, the gas flow path is clear, and the processes of filtration, sedimentation and reflux are carried out stably; the baffle is composed of spiral guide vanes and inclined baffles, with a reasonable inclination angle, which can effectively guide the gas to rotate and rise and promote liquid sedimentation; the fiber filter surface thickness is scientifically designed, which can stably filter residual tiny droplets and impurities, ensuring the purity of the discharged gas, and the whole device operates stably and reliably under high pressure.

[0020] (5) Strong adaptability: This device is suitable for a variety of high-pressure gas-liquid separation scenarios and can meet the needs of different fields such as chemical industry and energy for high-pressure gas-liquid separation. It has wide applicability and good adaptability. Attached Figure Description

[0021] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of the present invention. Other embodiments and many anticipated advantages of the embodiments will be readily recognized as they become better understood through reference to the following detailed description. Elements in the drawings are not necessarily to scale. The same reference numerals refer to corresponding similar parts.

[0022] Figure 1 This is a schematic diagram of the overall structure of the high-pressure gas-liquid separation and liquid return device according to this utility model.

[0023] Figure 2 This is a schematic diagram of the baffle plate of the high-pressure gas-liquid separation and return liquid device according to this utility model;

[0024] Figure 3 This is a schematic diagram of the baffle plate of the high-pressure gas-liquid separation and return device according to this utility model.

[0025] The meaning of each number in the diagram:

[0026] First high-pressure tank 1, air inlet pipe 11, liquid return port of the first high-pressure tank 12, second high-pressure tank 2, air outlet 21, liquid return port of the second high-pressure tank 22, three-stage gradient sintered filter element 3, first-stage sintered filter element 31, second-stage sintered filter element 32, third-stage sintered filter element 33, liquid baffle 4, baffle plate 5, gas pipeline 6, fiber filter surface 7. Detailed Implementation

[0027] In the following detailed description, reference is made to the accompanying drawings, which form part of the detailed description and illustrate illustrative specific embodiments in which the present invention may be practiced. In this regard, directional terms such as “top,” “bottom,” “left,” “right,” “up,” “down,” etc., are used with reference to the orientation of the described figures. Because components of the embodiments can be positioned in several different orientations, directional terms are used for illustrative purposes and are by no means limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present invention. Therefore, the following detailed description should not be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

[0028] This invention proposes a high-pressure gas-liquid separation and liquid return device. Figure 1 A schematic diagram of the overall structure of the high-pressure gas-liquid separation and liquid return device according to the present invention is shown. Figure 2 A schematic diagram of the baffle plate of the high-pressure gas-liquid separation and return device according to the present invention is shown. Figure 3 A schematic diagram of the baffle plate of the high-pressure gas-liquid separation and liquid return device according to the present invention is shown. (Refer to the reference.) Figures 1-3 The separation and return device includes a first high-pressure tank 1 and a second high-pressure tank 2, both vertically arranged. The first high-pressure tank 1 has an air inlet pipe 11 at its top, extending from the top to the bottom. The air inlet pipe 11 is designed to allow the high-pressure gas-liquid mixture to be separated to directly enter the bottom of the tank, creating favorable starting conditions for the subsequent separation process. Furthermore, the bottom of the first high-pressure tank 1 is equipped with a liquid return port 12.

[0029] The first high-pressure tank contains, from top to bottom, a three-stage gradient sintered filter element 3, a liquid baffle 4, and a flow deflector 5. The liquid baffle 4 is designed above the flow deflector 5 to mainly block the rotating and rising liquid, allowing most of the liquid to flow back while the gas continues to rise.

[0030] The three-stage gradient sintered filter element 3 includes a first-stage sintered filter element 31, a second-stage sintered filter element 32, and a third-stage sintered filter element 33. The first-stage sintered filter element 31 is 8-10 mm thick with a pore size of 30 micrometers; the second-stage sintered filter element 32 is 12-20 mm thick with a pore size of 80 micrometers; and the third-stage sintered filter element 33 is 30-40 mm thick with a pore size of 150 micrometers. Preferably, the first-stage sintered filter element 31 is 10 mm thick with a pore size of 30 micrometers; the second-stage sintered filter element 32 is 20 mm thick with a pore size of 80 micrometers; and the third-stage sintered filter element 33 is 40 mm thick with a pore size of 150 micrometers. The first-stage sintered filter element 31, the second-stage sintered filter element 32, and the third-stage sintered filter element 33 are arranged sequentially from bottom to top within the first high-pressure tank.

[0031] The upper part of the first high-pressure tank 1 is connected to the second high-pressure tank 2 via a gas pipe 6, which extends to the bottom of the second high-pressure tank 2. This allows gas to enter the bottom of the second high-pressure tank 2 and begin a further separation process. Micro-liquid particles accompanying the gas precipitate at the bottom of the second high-pressure tank 2, while the gas swirls upwards. This upward swirling process helps the micro-liquid to precipitate more effectively, improving the gas-liquid separation efficiency.

[0032] The upper part of the second high-pressure tank 2 is provided with a fiber filter surface 7, which performs a final filtration on the rising gas, filtering out residual tiny droplets and impurities, and then discharges the clean gas. The top of the second high-pressure tank 2 is provided with an air outlet 21, and the bottom of the second high-pressure tank is provided with a liquid return port 22, which is used to return the liquid that has settled at the bottom of the second high-pressure tank 2.

[0033] In a specific embodiment, the internal space of the first high-pressure tank 1 is sequentially arranged from bottom to top as a liquid sedimentation zone, a filtration zone, and a gas separation zone. The liquid sedimentation zone occupies 1 / 3 of the total height of the first high-pressure tank 1 and is located at the bottom of the tank 1; the filtration zone occupies 1 / 3 of the total height of the tank 1 and is located above the liquid sedimentation zone; and the gas separation zone occupies 1 / 3 of the total height of the tank 1 and is located above the filtration zone. An inlet pipe 11 is inserted from the top of the first high-pressure tank 1 and extends to the liquid sedimentation zone at the bottom of the tank 1. The liquid sedimented in the liquid sedimentation zone is returned to the corresponding system or container through a liquid return port 12 located at the bottom of the first high-pressure tank 1. This invention features a partitioned design inside the tank: the liquid sedimentation zone is used to settle the separated liquid; the middle area is the filtration zone, which undertakes the main filtration work for gas-liquid separation; and the gas separation zone is used to collect the separated gas.

[0034] In a specific embodiment, the baffle 5 is composed of spiral guide vanes and inclined baffles, with the angle between the surface of the inclined baffle and the horizontal plane being 30°-60°. The baffle 5 is installed at the bottom of the first high-pressure tank 1 to allow the gas to rise in a rotating manner. This rising rotation increases the contact area and time between the gas and the filter element, improving filtration efficiency, and also helps the liquid settle better into the liquid sedimentation zone. The fiber filter surface 7 has a thickness of 10-30 mm. This fiber filter surface 7 is composed of multiple layers of hydrophobic fiber material stacked together.

[0035] Working process of the first high-pressure tank 1:

[0036] The high-pressure gas-liquid mixture to be separated enters the liquid sedimentation zone at the bottom of the first high-pressure tank 1 from the top through the inlet pipe 11. Under the action of the baffle plate 5, the gas-liquid mixture rotates and rises, first passing through the baffle plate 4. Most of the liquid is thrown towards the tank wall and falls back into the liquid sedimentation zone due to centrifugal force, while the gas continues to rise. Subsequently, the gas passes through three-stage gradient sintered filter elements 3. In this process, most of the liquid returns to the bottom of the tank after rotational separation. Smaller particles of liquid and impurities are filtered by the first-stage sintered filter element 31, smaller particles are filtered by the second-stage sintered filter element 32, and even finer impurities and liquid are filtered by the third-stage sintered filter element 33. The separated liquid settles in the liquid sedimentation zone and flows back through the liquid return port 12 at the bottom. The separated gas rises to the upper separated gas zone and is transported to the second high-pressure tank 2 via the gas pipeline 6.

[0037] Working process of the second high-pressure tank 2:

[0038] Gas from the first high-pressure tank 1 enters the bottom of the second high-pressure tank 2 through the gas pipe 6 and rises in a swirling motion within the tank. During this swirling process, residual trace amounts of liquid settle to the bottom of the tank due to gravity and are discharged through the liquid return port 22 of the second high-pressure tank 2. The rising gas flows through the fiber filter surface 7 at the top, and finally, residual tiny droplets and impurities are removed before being discharged as clean gas through the outlet 21.

[0039] This invention proposes a high-pressure gas-liquid separation and liquid return device, comprising two vertically arranged high-pressure tanks, achieving multi-stage high-efficiency gas-liquid separation and liquid reflux functions. The first high-pressure tank 1 uses a three-stage gradient filter element 3 (30μ, 80μ, 150μ sintered filter element) to filter the gas-liquid mixture step by step. A baffle 5 at the bottom promotes gas rotation and upward movement to enhance the separation effect. The separated liquid settles to the bottom and is recovered through a reflux port 12. The second high-pressure tank 2 further removes trace amounts of liquid through gas swirl and a top fiber filter surface 7 to ensure gas purity. It also has a liquid reflux port 22 at the bottom. This device has a compact structure, is suitable for high-pressure environments, has high separation efficiency, effectively reduces liquid entrainment, and is suitable for high-pressure gas-liquid separation needs in chemical, energy, and other fields.

[0040] Obviously, those skilled in the art can make various modifications and changes to the embodiments of this utility model without departing from the spirit and scope of this utility model. In this way, this utility model is also intended to cover such modifications and changes if they fall within the scope of the claims of this utility model and their equivalents. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are described in mutually different dependent claims does not indicate that a combination of these measures cannot be used for profit. Any reference numerals in the claims should not be considered as limiting the scope.

Claims

1. A high-pressure gas-liquid separation and liquid return device, characterized in that, include: The first high-pressure tank and the second high-pressure tank are provided, wherein the top of the first high-pressure tank is provided with an air inlet pipe, the air inlet pipe extends from the top to the bottom of the first high-pressure tank, and the interior of the first high-pressure tank is provided with a three-stage gradient sintered filter element, a liquid baffle and a flow deflector in sequence from top to bottom. The upper part of the first high-pressure tank is connected to the second high-pressure tank through a gas pipe. The second high-pressure tank is provided with a fiber filter surface, and the top of the second high-pressure tank is provided with an air outlet and the bottom of the second high-pressure tank is provided with a liquid return port.

2. The high-pressure gas-liquid separation and liquid return device as described in claim 1, characterized in that, The three-stage gradient sintered filter element includes a first-stage sintered filter element, a second-stage sintered filter element, and a third-stage sintered filter element. The first-stage sintered filter element is a sintered filter element with a thickness of 8-10 mm and a pore size of 30 micrometers; the second-stage sintered filter element is a sintered filter element with a thickness of 12-20 mm and a pore size of 80 micrometers; and the third-stage sintered filter element is a sintered filter element with a thickness of 30-40 mm and a pore size of 150 micrometers.

3. The high-pressure gas-liquid separation and liquid return device as described in claim 2, characterized in that, The first-stage sintered filter element, the second-stage sintered filter element, and the third-stage sintered filter element are arranged sequentially from bottom to top inside the first high-pressure tank.

4. The high-pressure gas-liquid separation and liquid return device as described in claim 1, characterized in that, The upper part of the first high-pressure tank is connected to the second high-pressure tank via a gas pipe, and the gas pipe extends into the bottom of the second high-pressure tank.

5. The high-pressure gas-liquid separation and liquid return device as described in claim 1, characterized in that, Both the first high-pressure tank and the second high-pressure tank are vertically arranged.

6. The high-pressure gas-liquid separation and liquid return device as described in claim 1, characterized in that, The internal space of the first high-pressure tank is arranged from bottom to top as follows: a liquid sedimentation zone, a filtration zone, and a gas separation zone. The liquid sedimentation zone occupies 1 / 3 of the total height of the tank and is located at the bottom of the tank; the filtration zone occupies 1 / 3 of the total height of the tank and is located above the liquid sedimentation zone; and the gas separation zone occupies 1 / 3 of the total height of the tank and is located above the filtration zone.

7. The high-pressure gas-liquid separation and liquid return device as described in claim 6, characterized in that, The air inlet pipe is inserted from the top of the first high-pressure tank and extends to the liquid sedimentation area at the bottom of the first high-pressure tank.

8. The high-pressure gas-liquid separation and liquid return device as described in claim 1, characterized in that, The bottom of the first high-pressure tank is provided with a liquid return port.

9. The high-pressure gas-liquid separation and liquid return device as described in claim 1, characterized in that, The baffle plate is composed of a spiral guide vane and an inclined baffle, and the angle between the surface of the inclined baffle and the horizontal plane is 30°-60°.

10. The high-pressure gas-liquid separation and liquid return device as described in claim 1, characterized in that, The thickness of the fiber filter surface is 10-30 mm.

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