Gas-liquid separator and separation method based on super-aerophile and super-aerophobic particle gradient filling

Abstract

The invention discloses a gas-liquid separator based on super-aerophile and super-aerophobic particle gradient filling and a separation method. The gas-liquid separator comprises a gas-liquid inlet (1), a liquid outlet (2), a gas outlet (3), a super-aerophile supporting net (4), a gas-liquid chamber (5), a bubble floating chamber (6), a gas capturing chamber (7), a super-aerophile corrugated baffle plate (8), particles (9), a large particle filling chamber (10) and a small particle filling chamber (11). The filling chamber is filled with super-aerophilic large particles (91), super-aerophobic large particles (93), super-aerophilic small particles (92) and super-aerophobic small particles (94), the super-aerophilic supporting nets (4) are distributed on the two sides of the filling chamber, and the super-aerophilic corrugated baffle plates (8) are arranged in the filling chamber. According to the invention, while the separation efficiency is improved to 99.9%, the flow rate of the gas-liquid mixture is improved to 175%, so that the retention time in the gas-liquid separator is remarkably shortened, the problems of low separation efficiency and limited flow rate in the prior art are solved, and the gas-liquid separator is suitable for application scenarios of efficient gas-liquid separation.

Description

Technical Field

[0001] The present invention belongs to the field of gas-liquid separation, and in particular relates to a gas-liquid separator and a separation method based on gradient filling of super-aerophilic and super-aerophobic particles. Technical Background

[0002] Hydrogen energy has attracted much attention for its high energy density and clean combustion product (water). As a secondary energy source, hydrogen energy can be produced through a variety of routes and does not produce carbon dioxide emissions when used, making it an important tool for combating climate change. In recent years, with technological advances and policy support, the application scope of hydrogen energy has continued to expand, from transportation to industrial production, and the market potential of hydrogen energy is huge. Hydrogen production by water electrolysis is one of the main methods for producing green hydrogen, which refers to hydrogen produced by a water electrolysis process driven by renewable energy (such as solar and wind energy). According to research in Nature magazine, with the decline in the cost of renewable energy and the advancement of electrolysis technology, the economic feasibility of green hydrogen will be further improved, driving its importance in the global energy market.

[0003] In the process of hydrogen production by water electrolysis, the design and performance of the gas-liquid separator are crucial to the overall efficiency and stability of the system. Current gas-liquid separator technology faces compatibility issues when combined with fluctuating renewable energy sources such as wind and solar energy. Traditional gravity-type gas-liquid separators require large volumes and long residence times to achieve effective separation, which results in the need for a large amount of electrolyte, thereby extending the start-up time of the water electrolysis equipment (because the electrolyte needs to be heated to the operating temperature) and failing to respond quickly to fluctuating and intermittent energy sources. In addition, the separation efficiency of traditional gas-liquid separators is not high, making it difficult to achieve rapid separation, further limiting their compatibility with fluctuating energy sources. To address these issues, research is exploring new and efficient gas-liquid separation technologies to improve system response speed and adaptability.

[0004] In order to solve the above problems, the present invention is proposed. Summary of the invention

[0005] The invention discloses a gas-liquid separator based on super-aerophilic and super-aerophobic particle gradient filling, which comprises a gas-liquid inlet 1, a liquid outlet 2, a gas outlet 3, a super-aerophilic support net 4, a gas-liquid chamber 5, a bubble floating chamber 6, a gas capture chamber 7, a super-aerophilic corrugated baffle 8, particles 9, a large particle filling chamber 10, a small particle filling chamber 11, and a separator shell 12; the large particle filling chamber and the small particle filling chamber are respectively filled with super-aerophilic large particles 91, super-aerophobic large particles 93, super-aerophilic small particles 92, and super-aerophobic small particles 94, the super-aerophilic support net 4 is distributed on both sides of the filling chamber, and the super-aerophilic corrugated baffle 8 is arranged inside the filling chamber. It is intended to solve the problems of low separation efficiency, slow separation speed, large volume, and poor adaptability to fluctuating intermittent renewable energy in traditional gas-liquid separators.

[0006] The first aspect of the present invention proposes a gas-liquid separator based on super-aerophilic and super-aerophobic particle gradient filling, aiming to improve the separation efficiency of the gas-liquid separator and reduce the separation time. The gas-liquid separator includes a gas-liquid inlet 1, a liquid outlet 2, a gas outlet 3, a super-aerophilic support net 4, a gas-liquid chamber 5, a bubble floating chamber 6, a gas capture chamber 7, a super-aerophilic corrugated baffle 8, particles 9, a large particle filling chamber 10, a small particle filling chamber 11, and a separator housing 12;

[0007] The particles 9 include super aerophilic large particles 91, super aerophobic large particles 93, super aerophilic small particles 92, and super aerophobic small particles 94;

[0008] The gas-liquid chamber 5 includes the bubble floating chamber 6 and the gas capturing chamber 7;

[0009] The gas capture chamber 7 comprises a large particle filling chamber 10 and the small particle filling chamber 11;

[0010] The large particle filling chamber 10 is filled with the super aerophilic large particles 91 and the super aerophobic large particles 93 in an orderly manner;

[0011] The small particle filling chamber 11 is filled with the super aerophilic small particles 92 and the super aerophobic small particles 94 in an orderly manner;

[0012] The super-aerophilic support net 4 is distributed on both sides of the large particle filling chamber 10 and / or the small particle filling chamber 11;

[0013] A plurality of super-aerophilic corrugated baffles 8 are arranged inside the large particle filling chamber 10 and / or the small particle filling chamber 11, and the internal space between the super-aerophilic corrugated baffles 8 is filled with the particles 9;

[0014] The gas-liquid inlet 1 is located on the left side of the gas-liquid separator, and the liquid outlet 2 and the gas outlet 3 are located on the right side of the gas-liquid separator.

[0015] Preferably, the droplet contact angle is used to represent the surface wettability of the super aerophilic large particles 91, the super aerophobic large particles 93, the super aerophilic small particles 92, and the super aerophobic small particles 94, wherein the contact angles of the super aerophilic large particles 91 and the super aerophilic small particles 92 range from 90° to 180°; the contact angles of the super aerophobic large particles 93 and the super aerophobic small particles 94 range from 0° to 90°.

[0016] Preferably, the particle size range of the super-aerophilic small particles 92 and the super-aerophobic small particles 94 is 0.1 μm to 0.1 cm, including 0.1 μm and excluding 0.1 cm; the particle size range of the super-aerophilic large particles 91 and the super-aerophobic large particles 93 is 0.1 cm to 1 cm, including 0.1 cm and excluding 1 cm. In the actual process, the same particle filling chamber can be filled with particles of the same diameter, or with a mixture of particles of different diameters, and can be filled with particles of the same surface wettability, or with a mixture of particles of different surface wettability.

[0017] Preferably, the large particle filling chamber 10 includes but is not limited to the following particle filling methods, the super-air-repellent large particles 93 are located in the leftmost range, the rightmost range is a mixture of the super-air-repellent large particles 93 and the super-air-philic large particles 91, and the super-air-philic large particles 91 fill a proportion of 0% to 100% of the particles 9 in the large particle filling chamber 10. Other filling methods may also be to uniformly fill the super-air-repellent large particles 93 and the super-air-philic large particles 91.

[0018] Preferably, the small particle filling chamber 11 includes but is not limited to the following particle filling methods, the super aerophobic small particles 94 and the super aerophilic small particles 92 are uniformly filled, and the filling ratio of the super aerophilic small particles 92 is 0% to 100% of the particles 9 in the small particle filling chamber 11.

[0019] Preferably, the super aerophilic support mesh 4 is made of surface modified hard stainless steel mesh, and the droplet contact angle is used to represent the surface wettability of the super aerophilic support mesh 4. The contact angle of the super aerophilic support mesh 4 ranges from 90° to 180°, and the mesh size of the super aerophilic support mesh 4 is 40-300 meshes.

[0020] Preferably, the super-aerophilic corrugated baffles 8 are made of polytetrafluoroethylene (PTFE), and the spacing between adjacent super-aerophilic corrugated baffles 8 is 0.1-5 cm.

[0021] Preferably, there are a plurality of the gas capture chambers 7 inside the gas-liquid separator, and two adjacent gas capture chambers 7 are not in contact with each other, and the spacing between them is 0.1 cm-50 cm.

[0022] Preferably, the large particle filling chamber 10 is located on the left side of the bubble capture chamber 7, and the small particle filling chamber 11 is located on the right side of the bubble capture chamber 7, forming a particle size gradient filling from left to right. The bubble capture chamber 7 may also include one or more large particle filling chambers 10 and small particle filling chambers 11, and each filling chamber is filled with particles of the same or different diameters and different wettability.

[0023] The second aspect of the present invention provides a gas-liquid separation method based on super-aerophilic and super-aerophobic particles gradient filling, using the gas-liquid separator with super-aerophilic and super-aerophobic particles gradient filling described in the first aspect of the present invention, which includes: a gas-liquid mixture enters the gas-liquid chamber 5 through the gas-liquid inlet 1, and the gas-liquid mixture enters the gas capture chamber 7 through the super-aerophilic support net 4, and the gas in the gas-liquid mixture in the gas capture chamber 7 is captured by the particles 9, and the gas and liquid are separated, and then in the bubble flotation chamber 6, the bubbles float to the top of the gas-liquid separator and are discharged through the gas outlet 3, while the liquid is discharged through the liquid outlet 2.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The gas-liquid separator of the present invention is based on the gradient filling of super-aerophilic and super-aerophobic particles. First, it is efficient bubble capture. The super-aerophilic particles can capture tiny bubbles in the gas-liquid mixed fluid, and merge the small bubbles into large bubbles through surface action, thereby relying on buoyancy to achieve rapid gas-liquid separation; secondly, the high-speed liquid flow, the super-aerophobic particles construct an efficient liquid circulation channel, which can significantly improve the liquid delivery efficiency. The multiple super-aerophilic corrugated baffles in the filling chamber can change the flow direction of the gas-liquid mixed fluid many times, so that the bubbles frequently collide with the super-aerophilic particles and are captured, and the pore size gradient and wettability gradient are constructed in the bubble capture chamber through particles with different pore sizes and different wettability, further improving the separation effect. Through the above design, the present invention increases the flow rate of the gas-liquid mixture to 175% while increasing the separation efficiency to 99.9%, significantly shortening the residence time in the gas-liquid separator, solving the problems of low separation efficiency and limited flow rate in the prior art, and is suitable for the application scenario of efficient and rapid gas-liquid separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 : Schematic diagram of the gas-liquid separator structure filled with superaerophilic and superaerophobic particles in a gradient manner.

[0027] Figure 2 : Diagram of the interaction between super-aerophobic particles, super-aerophilic particles and bubbles, where the left picture shows super-aerophobic particles and the right picture shows super-aerophilic particles.

[0028] Figure 3 : Schematic diagram of the interaction between super-aerophobic particle stacking, super-aerophilic particle stacking and super-aerophobic-super-aerophilic particle mixed stacking and the flow field, where from left to right are super-aerophobic particle stacking, super-aerophilic particle stacking and super-aerophobic-super-aerophilic particle stacking respectively.

[0029] Figure 4 : Comparison of maximum flow rate and gas-liquid separation efficiency of conventional gas-liquid separator, superaerophobic particle-filled gas-liquid separator, superaerophilic particle-filled gas-liquid separator, and superaerophobic and superaerophilic gradient-filled gas-liquid separator.

[0030] Names of the accompanying drawings in the accompanying drawings: 1. gas-liquid inlet, 2. liquid outlet, 3. gas outlet, 4. super-aerophilic support net, 5. gas-liquid chamber, 6. bubble floating chamber, 7. gas capture chamber, 8. super-aerophilic corrugated baffle, 9. particulate matter, 10. large particle filling chamber, 11. small particle filling chamber, 12. separator shell, 13. bubble flow trajectory, 14. gas bridge, 91. super-aerophilic large particle, 92. super-aerophilic small particle, 93. super-aerophobic large particle, 94. super-aerophobic small particle, DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with embodiments.

[0032] Those skilled in the art will appreciate that the following examples are only used to illustrate the present invention and should not be considered to limit the scope of the present invention. If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the art or the product specifications are used. If the manufacturer of the materials or equipment used is not specified, they are all conventional products that can be purchased.

[0033] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" to another element, it may be directly connected to the other element, or there may be intermediate elements. In addition, the "connection" used herein may include wireless connections.

[0034] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two. The terms "inside", "upper", "lower", etc., indicating positions or state relationships, are based on the positions or state relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operate in a specific position, and therefore cannot be understood as limiting the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0036] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0037] Example

[0038] Combination Figures 1 to 4 As shown, this embodiment proposes a gas-liquid separator based on super-aerophilic and super-aerophobic particle gradient filling, aiming to improve the separation efficiency of the gas-liquid separator and reduce the separation time. It includes a gas-liquid inlet 1, a liquid outlet 2, a gas outlet 3, a super-aerophilic support net 4, a gas-liquid chamber 5, a bubble floating chamber 6, a gas capture chamber 7, a super-aerophilic corrugated baffle 8, particles 9, a large particle filling chamber 10, a small particle filling chamber 11, and a separator housing 12;

[0039] The particles 9 include super aerophilic large particles 91, super aerophobic large particles 93, super aerophilic small particles 92, and super aerophobic small particles 94;

[0040] The gas-liquid chamber 5 includes the bubble floating chamber 6 and the gas capturing chamber 7;

[0041] The gas capture chamber 7 comprises a large particle filling chamber 10 and the small particle filling chamber 11;

[0042] The large particle filling chamber 10 is filled with the super aerophilic large particles 91 and the super aerophobic large particles 93 in an orderly manner;

[0043] The small particle filling chamber 11 is filled with the super aerophilic small particles 92 and the super aerophobic small particles 94 in an orderly manner;

[0044] The super-aerophilic support net 4 is distributed on both sides of the large particle filling chamber 10 and / or the small particle filling chamber 11;

[0045] A plurality of super-aerophilic corrugated baffles 8 are arranged inside the large particle filling chamber 10 and / or the small particle filling chamber 11, and the internal space between the super-aerophilic corrugated baffles 8 is filled with the particles 9;

[0046] The gas-liquid inlet 1 is located on the left side of the gas-liquid separator, and the liquid outlet 2 and the gas outlet 3 are located on the right side of the gas-liquid separator.

[0047] In the large particle filling chamber 10 , the super air-phobic large particles 93 are located in the leftmost range, and the rightmost range is a mixture of the super air-phobic large particles 93 and the super air-philic large particles 91 . The super air-philic large particles 91 account for 30% of the particles 9 in the large particle filling chamber 10 .

[0048] In the small particle filling chamber 11 , the super-aerophobic small particles 94 and the super-aerophilic small particles 92 are uniformly filled, and the super-aerophilic small particles 92 account for 60% of the particles 9 in the small particle filling chamber 11 .

[0049] The material of the super aerophilic support mesh 4 is a surface-modified hard stainless steel mesh. The droplet contact angle is used to represent the surface wettability of the super aerophilic support mesh 4. The contact angle of the super aerophilic support mesh 4 is 110°, and the mesh size of the super aerophilic support mesh 4 is 40 meshes.

[0050] The material of the super-aerophilic corrugated baffles 8 is PTFE, and the distance between adjacent super-aerophilic corrugated baffles 8 is 1 cm.

[0051] There are three gas capture chambers 7 inside the gas-liquid separator, and two adjacent gas capture chambers 7 are not in contact with each other, and the distance between them is 10 cm.

[0052] The large particle filling chamber 10 is located on the left side of the bubble capturing chamber 7, and the small particle filling chamber 11 is located on the right side of the bubble capturing chamber 7, forming a particle size gradient filling from left to right.

[0053] Specifically, the gas capture chamber 7 is composed of a large particle filling chamber 10 on the left and a small particle filling chamber 11 on the right, which are tightly fitted together. The large particle filling chamber 10 is filled with super aerophilic large particles 91 and super aerophobic large particles 93 in an orderly manner, and the average particle size is 5 mm equivalent diameter; the small particle filling chamber 11 is filled with super aerophilic small particles 92 and super aerophobic small particles 94 in a uniform mixture, and the average particle equivalent diameter is 500 μm.

[0054] The internal materials of super-aerophilic large particles 91, super-aerophobic large particles 93, super-aerophilic small particles 92, and super-aerophobic small particles 94 are all PTFE materials, and are prepared into super-aerophilic and super-aerophobic particles by super-aerophilic and super-aerophobic surface modification. The mode of super-aerophilic surface modification is: rinse the PTFE particles with deionized water to remove dust or impurities that may exist on the surface. Then dry in an oven to ensure that the particle surface is free of moisture. The dried PTFE particles are evenly placed on the sample stage of a plasma treatment instrument. Ensure that the particles do not overlap and are evenly treated with plasma. Take out the treated PTFE particles, use sandblasting technology, and roughen the surface of the PTFE particles. Before roughening, the liquid contact angle of the PTFE particles is 110 °. After roughening, the contact angle of the PTFE particle surface droplets is 150 °, which is a super-aerophilic surface. The mode of super-aerophilic particle surface modification is: PTFE particles are put into a 0.1-0.5M potassium permanganate solution, and oxidized for 1-2 hours at room temperature to introduce a hydroxyl group. Subsequently, the particles are filtered and rinsed with deionized water, and then dried in a vacuum drying oven to constant weight. Next, an acrylic acid solution is prepared in a beaker, 1-2% azobisisobutyronitrile is added as an initiator, the activated PTFE particles are added to the solution, and heated to 60-70°C under an inert atmosphere, and stirred for 2-4 hours for graft polymerization. After the reaction is completed, the particles are filtered and washed with ethanol or acetone to remove unreacted monomers and initiators, and then rinsed with deionized water. Finally, the modified particles are dried in a vacuum drying oven to obtain super-aerophobic PTFE particles, and the super-aerophobic PTFE particle droplet contact angle is 30°.

[0055] After processing the raw materials, filling and assembling in the above manner, a gas-liquid separator based on gradient filling of super-aerophilic and super-aerophobic particles is obtained, such as Figure 1 As shown, the device of the present invention is connected to the electrolytic water electrolysis cell system (not shown in the figure) through the gas-liquid inlet 1 and the liquid outlet 2 to achieve normal operation. The gas-liquid mixture enters the gas-liquid chamber 5 through the gas-liquid inlet 1. First, the mixture passes through the super-aerophilic support net 4 and collides with the super-aerophobic large particle 93 on the leftmost side of the large particle filling chamber 10. The collision process causes the fluid to be diverted and the direction of movement to change, thereby ensuring uniform distribution of the fluid. Figure 2 As shown in the left figure, when the gas-liquid fluid collides with the super-aerophobic particles, the gas-liquid mixture realizes redistribution of direction and flow (the effect of super-aerophobic particles), which has little effect on the bubbles. The super-aerophilic corrugated baffle 8 inside the filling chamber also changes the flow direction of the gas-liquid mixture, increasing the probability of collision between the gas-liquid mixture and the particles. The redistributed gas-liquid mixture continues to collide with the super-aerophilic large particles 91 and super-aerophobic large particles 93 in the large particle filling chamber 10. Figure 2As shown in the right figure, when the gas-liquid mixture collides with the super-aerophilic large particles 91, the bubbles are adhered to the particles, and bubble capture is achieved. The bubbles on the surface of the particles will collide and fuse on their surface to form larger bubbles (super-aerophilic particle effect). However, since the super-aerophilic large particles can only adhere to the bubbles that collide directly, some bubbles are still mixed with the solution. Subsequently, the bubble mixture enters the small particle filling chamber 11 and interacts with the super-aerophilic small particles 92 therein. The bubbles are adhered to by the small particles and aggregated into larger bubbles. These large bubbles are susceptible to fluid action and are taken out due to the large windward area. In the bubble floating chamber 6, the large bubbles float to the top of the separator, and after passing through the three-stage gas capture chamber 7, the bubble removal effect is further improved, and the bubbles in the gas-liquid mixture are completely separated. The gas is discharged through the gas outlet, and the liquid passes through the liquid channel constructed by the super-aerophobic particles, and passes through the gas capture chamber 7 smoothly and quickly.

[0056] In the present invention, gradient particle filling plays a key role in the gas-liquid separation process. Specifically, a large particle filling chamber 10 is provided on the left side of the gas capture chamber 7, and a small particle filling chamber 11 is provided on the right side. The large particles in the large particle filling chamber 10 are mainly used for liquid redistribution and adhesion of some bubbles, ensuring that the gas-liquid mixture is evenly diverted and can be effectively transferred to the small particle filling chamber 11. The small particle filling chamber 11 ensures that the bubbles in the gas-liquid mixture are quickly captured.

[0057] In addition, the separation effect is further optimized by using a mixed filling of superaerophilic and superaerophobic particles. Figure 3 As shown in the left figure, if only super-gas-repellent large particles 93 are used, although the gas-liquid mixture can flow rapidly along the bubble flow trajectory 13, the bubbles cannot be adhered and separated by the particles, as shown in FIG. Figure 2 As shown in the left figure. If the super-aerophilic large particles 91 are completely filled, although they can quickly adhere to the bubbles in the gas-liquid mixture (such as Figure 2 Right), but the particles may be connected by gas bridging14 (e.g. Figure 3 Middle figure) affects the flow of liquid. By mixing and filling superaerophilic and superaerophobic particles, not only the smooth flow of the gas-liquid mixture is ensured, but also the bubbles are quickly adhered and separated by the superaerophilic particles. Figure 3 As shown in the figure on the right. Finally, Figure 4As shown, in a conventional gas-liquid separator, no particles are filled inside the separator, and the bubbles in the gas-liquid separator will float up under the action of gravity to achieve gas-liquid separation. Since it is a passive gas-liquid separation, the separation effect is not good. And in order to ensure a certain separation effect, the gas-liquid flow rate is set to be relatively small (excessive flow rate will cause the gas in the gas-liquid mixture to not have time to float up and be brought back to the electrolytic cell). The gradient-filled superaerophilic / superaerophobic particles in the gas-liquid separator induce the forced and rapid merging of bubbles through gradient pore size and gradient wetting properties to achieve rapid gas-liquid separation. Therefore, the gas-liquid mixture stays in the gas-liquid separator for a short time and the separation speed is fast, achieving the highest gas-liquid separation efficiency and the maximum flow rate. From Figure 4 It can be seen that the maximum flow rate in the conventional gas-liquid separator is about 80 L / min, while the maximum flow rate of the gradient-filled superphilic / superphobic particles in the gas-liquid separator of this embodiment is about 140 L / min, and the flow rate of the gas-liquid mixture is increased to 175% of the original.

Claims

1. A gas-liquid separator based on gradient filling of super-aerophilic and super-aerophobic particles, characterized in that: It comprises a gas-liquid inlet (1), a liquid outlet (2), a gas outlet (3), a super-aerophilic support net (4), a gas-liquid chamber (5), a bubble floating chamber (6), a gas capture chamber (7), a super-aerophilic corrugated baffle (8), particles (9), a large particle filling chamber (10), a small particle filling chamber (11), and a separator shell (12); The particles (9) include super-aerophilic large particles (91), super-aerophobic large particles (93), super-aerophilic small particles (92), and super-aerophobic small particles (94); The gas-liquid chamber (5) includes the bubble floating chamber (6) and the gas capturing chamber (7); The gas capture chamber (7) comprises a large particle filling chamber (10) and the small particle filling chamber (11); The large particle filling chamber (10) is filled with the super aerophilic large particles (91) and the super aerophobic large particles (93) in an orderly manner; The small particle filling chamber (11) is filled with the super aerophilic small particles (92) and the super aerophobic small particles (94) in an orderly manner; The super-aerophilic support net (4) is distributed on both sides of the large particle filling chamber (10) and / or the small particle filling chamber (11); A plurality of super-aerophilic corrugated baffles (8) are arranged inside the large particle filling chamber (10) and / or the small particle filling chamber (11), and the internal space between the super-aerophilic corrugated baffles (8) is filled with the particles (9); The gas-liquid inlet (1) is located on the left side of the gas-liquid separator, and the liquid outlet (2) and the gas outlet (3) are located on the right side of the gas-liquid separator.

2. The gas-liquid separator filled with super-aerophilic and super-aerophobic particles according to claim 1, characterized in that: The droplet contact angle is used to represent the surface wettability of the super aerophilic large particles (91), the super aerophobic large particles (93), the super aerophilic small particles (92), and the super aerophobic small particles (94), wherein the contact angles of the super aerophilic large particles (91) and the super aerophilic small particles (92) range from 90° to 180°; the contact angles of the super aerophobic large particles (93) and the super aerophobic small particles (94) range from 0° to 90°.

3. The gas-liquid separator filled with super-aerophilic and super-aerophobic particles according to claim 1, characterized in that: The particle size range of the super aerophilic small particles (92) and the super aerophobic small particles (94) is 0.1 μm to 0.1 cm, including 0.1 μm and excluding 0.1 cm; the particle size range of the super aerophilic large particles (91) and the super aerophobic large particles (93) is 0.1 cm to 1 cm, including 0.1 cm and 1 cm.

4. The gas-liquid separator filled with super-aerophilic and super-aerophobic particles according to claim 1, characterized in that: In the large particle filling chamber (10), the super-air-phobic large particles (93) are located in the left range, and the right range is a mixture of the super-air-phobic large particles (93) and the super-air-philic large particles (91), and the filling ratio of the super-air-philic large particles (91) is 0% to 100% of the particles (9) in the large particle filling chamber (10).

5. The gas-liquid separator filled with super-aerophilic and super-aerophobic particles according to claim 1, characterized in that: In the small particle filling chamber (11), the super-aerophobic small particles (94) and the super-aerophilic small particles (92) are uniformly filled, and the filling ratio of the super-aerophilic small particles (92) is 0% to 100% of the particles (9) in the small particle filling chamber (11).

6. The gas-liquid separator filled with super-aerophilic and super-aerophobic particles according to claim 1, characterized in that: The material of the super aerophilic support mesh (4) is a surface-modified hard stainless steel mesh. The droplet contact angle is used to represent the surface wettability of the super aerophilic support mesh (4). The contact angle of the super aerophilic support mesh (4) ranges from 90° to 180°. The mesh size of the super aerophilic support mesh (4) is 40-300 meshes.

7. The gas-liquid separator filled with super-aerophilic and super-aerophobic particles according to claim 1, characterized in that: The material of the super-aerophilic corrugated baffles (8) is polytetrafluoroethylene, and the spacing between adjacent super-aerophilic corrugated baffles (8) is 0.1-5 cm.

8. The gas-liquid separator filled with super-aerophilic and super-aerophobic particles gradient according to claim 1, characterized in that: The gas-liquid separator has a plurality of gas capture chambers (7) inside, and two adjacent gas bubble capture chambers (7) are not in contact with each other, with a spacing of 0.1 cm to 50 cm.

9. The gas-liquid separator filled with super-aerophilic and super-aerophobic particles according to claim 1, characterized in that: The large particle filling chamber (10) is located on the left side of the bubble capturing chamber (7), and the small particle filling chamber (11) is located on the right side of the bubble capturing chamber (7), forming a particle size gradient filling from left to right.

10. A gas-liquid separation method based on gradient filling of super-aerophilic and super-aerophobic particles, characterized in that: A gas-liquid separator using the gradient filling of super-aerophilic and super-aerophobic particles as described in any one of claims 1 to 9, comprising: a gas-liquid mixture enters the gas-liquid chamber (5) via the gas-liquid inlet (1), the gas-liquid mixture enters the gas capture chamber (7) through the super-aerophilic support net (4), the gas in the gas-liquid mixture in the gas capture chamber (7) is captured by the particles (9), the gas and liquid are separated, and then in the bubble flotation chamber (6), the bubbles float to the top of the gas-liquid separator and are discharged through the gas outlet (3), while the liquid is discharged through the liquid outlet (2).

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