CN108325240B - Gas-liquid quick separation device for separating gas from liquid - Google Patents
Gas-liquid quick separation device for separating gas from liquid Download PDFInfo
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- CN108325240B CN108325240B CN201810030317.8A CN201810030317A CN108325240B CN 108325240 B CN108325240 B CN 108325240B CN 201810030317 A CN201810030317 A CN 201810030317A CN 108325240 B CN108325240 B CN 108325240B
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- 239000007788 liquid Substances 0.000 title claims abstract description 218
- 238000000926 separation method Methods 0.000 title claims abstract description 149
- 230000003075 superhydrophobic effect Effects 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 18
- 230000003068 static effect Effects 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 238000003491 array Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 69
- 230000000694 effects Effects 0.000 description 9
- 239000012530 fluid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 biology Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0005—Degasification of liquids with one or more auxiliary substances
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention discloses a gas-liquid quick separation device for separating gas from liquid. The gas-liquid separation core body is immersed in liquid and is provided with at least one gas-liquid separation core body, the gas-liquid separation core body is of a net barrel-shaped or spring-shaped structure, and the surface of the gas-liquid separation core body is covered with a super-hydrophobic material coating. The gas-liquid separation core body is of an independent structure and can be combined into a group of gas-liquid separation core body arrays through connecting pipelines. According to the invention, by utilizing the hydrophobic property of the super-hydrophobic material, a solid-liquid three-phase interface is formed on the peripheral wall surface of the net barrel-shaped or spring-shaped gas-liquid separation core body, gas is gathered in the gas-liquid separation core body, liquid is isolated outside the gas-liquid separation core body, and the peripheral gas is rapidly separated from the liquid when contacting the surface of the gas-liquid separation core body, so that the gas-liquid separation efficiency of the gas in the liquid is accelerated.
Description
Technical Field
The invention relates to the industrial fields of chemistry, food, hydraulic pressure, medicine, biology, paper making and the like, in particular to a gas-liquid quick separation device for separating gas from liquid, which is used as a separator for gas in liquid.
Background
The liquid and gas separation is a process of separating gas in liquid or separating liquid in gas into pure liquid or pure gas by means of physics, chemistry and the like, and belongs to a fluid separation process. Common gas-liquid separation modes include gravity settling, baffling separation, centrifugal separation, wire mesh separation, ultrafiltration separation and filling separation. However, in the current engineering application, the gas-liquid separation device has different defects, and the current separation mode has incomplete separation, such as baffling separation; some separations are slow, such as gravity settling, etc. In practice it is difficult to separate gas from liquid at high flow rates. There is therefore a need for a gas-liquid separation device that can rapidly separate gas from stationary and flowing liquids.
Disclosure of Invention
The invention provides a gas-liquid rapid separation device for separating gas from liquid, aiming at the defects of the existing gas-liquid separation device, which utilizes the rapid precipitation characteristic of the gas under the action of the surface tension of a gas-liquid interface to carry out gas-liquid separation and can rapidly and efficiently separate the gas in the liquid.
In order to realize the quick and efficient gas-liquid separation process, the invention adopts the technical scheme that:
the gas-liquid separation device comprises a gas outlet pipe and at least one gas-liquid separation core body for separating gas in liquid, wherein the gas-liquid separation core body is immersed in the liquid, one end of the gas-liquid separation core body is connected with one end of the gas outlet pipe, and the other end of the gas outlet pipe is connected with the external atmosphere or a gas storage chamber.
The gas-liquid separation core body is immersed in liquid, and preferably, the axial direction of the gas-liquid separation core body or the plane direction of the core body group is perpendicular to the flow direction of the liquid.
The gas-liquid separation core body is of a net barrel-shaped structure or a spring spiral structure, and the surface of the gas-liquid separation core body is covered with a super-hydrophobic material coating, so that the gas-liquid separation core body can meet the requirement of quickly separating gas from different liquids.
In the net barrel-shaped structure with the surface covered with the super-hydrophobic coating, the diameter of the net hole is 1 mu m-1 mm. In the spiral structure of the spring with the surface covered with the super-hydrophobic coating, the gap between adjacent spring wires is 1 mu m-1 mm.
The net barrel-shaped structure is a sleeve structure with meshes, and the spring spiral structure is a spiral structure similar to the spring structure.
The gas-liquid separation core body can separate air in water.
In specific implementation, the diameter of the mesh in the gas-liquid separation core body of the net barrel-shaped structure, the surface of which is not covered with the super-hydrophobic coating, is 10 mu m-4 mm. The diameter D of a spring wire material in the gas-liquid separation core body of the spring spiral structure of which the surface is not covered with the super-hydrophobic coating is 0.1-60mm, the middle diameter D of the spring is 1.1-20D, and the pitch t of the spring is 1.1-1.5D. And then coating a super-hydrophobic material coating on the surface of the net barrel-shaped structure or the spring spiral structure, and selecting the thickness of the super-hydrophobic coating to be 5 mu m-1.5 mm. The thickness of the coating is selected according to different spring structures, so that the diameter of each mesh is 1 mu m-1mm, or a gap interval of 1 mu m-1mm is formed between two spring wires, and gas can be smoothly separated from the liquid.
One end of the gas outlet pipe is connected to the gas-liquid separation core body, and the other end of the gas outlet pipe can be connected to the gas storage chamber according to specific conditions and gas collection requirements; if the gas is a harmless gas that does not require collection and can be discharged into the surrounding atmosphere, it can be directly vented to the surrounding atmosphere.
The difference value | P1-P2| between the hydraulic pressure P1 of the liquid environment outside the gas-liquid separation core body and the gas pressure P2 of the gas environment inside the gas-liquid separation core body is less than or equal to 1atm, so that gas is smoothly separated out of liquid, and the situation that the gas is separated out of the gas-liquid separation core body to the liquid or the liquid enters the gas-liquid separation core body cannot occur.
The other end of the gas-liquid separation core body is plugged by a plug or is communicated with other gas-liquid separation core bodies through a connecting pipe.
The gas-liquid separation core body array comprises a plurality of gas-liquid separation core bodies, wherein one ends of the gas-liquid separation core bodies are connected to a gas storage chamber or external atmosphere through gas outlet pipes, and the other ends of the gas-liquid separation core bodies are communicated in immersed liquid through the same connecting pipe, so that the gas-liquid separation core body array is formed.
The gas outlet pipe for conveying gas is a single-way pipe or a multi-way pipe, and one end of the gas outlet pipe is communicated with the gas storage chamber or the external atmosphere; the other end is communicated with the outlet ends of one or more gas-liquid separation cores.
The outlet end of the air outlet pipe extends out of the liquid level and is communicated with the outside atmosphere or the air storage chamber.
The air outlet pipe penetrates through the wall of the liquid container and is communicated with the outside atmosphere or the air storage chamber, and when the air outlet pipe extends out of the pipe wall, the air outlet pipe and the wall of the liquid container are sealed through a sealing ring to prevent leakage.
The plug for plugging the tail end of the gas-liquid separation core body is in a cone frustum structure and is made of rubber, metal or nylon.
The gas-liquid separation device is suitable for static liquid and flowing liquid.
Whether to use the air storage chamber, the plug, the sealing ring and the connecting pipe is selected according to specific gas-liquid separation conditions.
In the invention, the gas-liquid separation core body is horizontally immersed in a static liquid or immersed in a flowing liquid in a direction vertical to the liquid flow direction. The gas-liquid separation core body is characterized in that a gas channel is sealed in the gas-liquid separation core body in a net barrel shape or a spring shape by utilizing the hydrophobic characteristic of a super-hydrophobic material to liquid, a liquid environment is arranged outside the gas-liquid separation core body, when gas contacts the surface of the gas-liquid separation core body in the shape of bubbles and the like, the gas-liquid interface in the gas-liquid separation core body is fused under the action of surface tension, the bubbles are opened, and the gas is discharged into the gas channel in the net barrel shape or the spring-shaped gas-liquid separation core body to complete the gas-liquid separation process. The invention utilizes the hydrophobic characteristic of the surface of the super-hydrophobic material to accelerate the separation speed of gas from liquid and improve the gas-liquid separation efficiency and effect.
The technical scheme adopted by the invention has the beneficial effects that:
the invention provides a brand-new gas-liquid separation way for a gas-liquid separation process, a gas-liquid interface is formed on the surface of a net barrel-shaped or spring-shaped structure by utilizing a super-hydrophobic material, liquid and gas are separated, the separation speed of contacting gas from the liquid is accelerated by utilizing the action of surface tension, the gas-liquid separation efficiency is improved, and the gas-liquid separation effect is increased.
The gas-liquid quick separation device has the advantages of high gas-liquid separation speed and good effect, can greatly improve the gas-liquid separation effect, and can be widely applied to the fields of chemical industry, food, biology and the like.
Drawings
FIG. 1 is a schematic view showing the structure of the apparatus of the present invention having only one gas-liquid separating core.
FIG. 2 is a schematic diagram showing the structure of the device of the present invention with two gas-liquid separation cores.
FIG. 3 is a schematic diagram illustrating the principle of the gas collecting process of the gas-liquid separation core according to the present invention.
In the figure: 1 is the gas receiver, 2 is the sealing washer, 3 is the outlet duct, 4 is the gas-liquid separation core, 5 is the stopper, 6 is the connecting pipe.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in the figure, the invention comprises a gas-liquid separation core body 4 with a super-hydrophobic coating covered on the surface, and a plug 5 for plugging a pipe orifice at the tail end of the gas-liquid separation core body 4, as shown in figure 1, or a connecting pipe 6 for connecting to other gas-liquid separation core bodies, as shown in figure 2. And the other end of the gas outlet pipe 3 can be connected to the gas storage chamber 1 according to specific conditions or directly communicated with the surrounding atmosphere. If the air outlet pipe penetrates out of the wall of the liquid pipe, the sealing ring 2 is required to seal to prevent the liquid from leaking from the pipeline, and if the air outlet pipe penetrates out of the liquid level of the liquid, the sealing ring 2 is not required to be added.
To explain the principle of the present invention in more detail, the process of collecting gas in the gas-liquid separation core 4 is illustrated in fig. 3, the gas in the liquid exists in the form of bubbles, and slowly contacts with the surface of the gas-liquid separation core 4 during the movement of the bubbles, as shown in a to b and then c in fig. 3, and when the bubbles contact with the surface of the gas-liquid separation core 4, as shown in b in fig. 3, the surface tension of the liquid accelerates the separation of the bubbles, i.e., the process from b to c and then to d, due to the gas-liquid interface formed by the superhydrophobic material on the surface. This quickly separates the gas from the liquid.
The implementation working process of the invention is as follows:
example 1
As shown in figure 1, the device comprises an air storage chamber 1, a sealing ring 2, a plug 5, an air outlet pipe 3 and an air-liquid separation core body 4, wherein the air-liquid separation core body 4 is immersed in liquid, one end of the air-liquid separation core body 4 is connected with one end of the air outlet pipe 3, the other end of the air-liquid separation core body 4 is plugged by the plug 5, and the other end of the air outlet pipe 3 is communicated with the air storage chamber 1 through the sealing ring 2.
If the gas-liquid separation device is required to be installed in a fluid pipeline and extends out of the side wall of the pipeline, the gas outlet pipe 3 is required to penetrate out of the pipe wall and is sealed by the sealing ring 2, and the sealing performance and leakage prevention are guaranteed. If it is not necessary to lead out from the side wall of the pipe, but only from the liquid level, the sealing ring 2 is not needed for sealing.
The gas-liquid separation core body 4 is of a net barrel-shaped structure, and the surface of the gas-liquid separation core body is covered with a super-hydrophobic material coating. The gas-liquid separation core body 4 with a net barrel-shaped structure is arranged in a fluid pipeline or a container, and the axis of the gas-liquid separation core body 4 is vertical to the moving direction of gas in liquid, so that the gas-liquid separation speed is increased, and the gas-liquid separation effect is improved.
The original mesh diameter of the gas-liquid separation core body 4 with the net barrel-shaped structure is 10 mu m, and a super-hydrophobic coating with the thickness of 4.5 mu m is sprayed on the surface of the net barrel to obtain the final mesh diameter of 1 mu m.
Under the condition that the difference | P1-P2| between the pressure P1 of the liquid environment outside the gas-liquid separation core 4 and the pressure P2 of the gas environment inside is less than or equal to 1atm, the gas storage chamber 1 is used for collecting gas.
If gas collection is not required, except for harmless gases, the gas outlet pipe can be directly communicated with the surrounding atmosphere.
The air outlet pipe 3 in this embodiment may also be directly connected to the atmosphere.
The implementation effect/result of the embodiment is fast, efficient and high in separation rate.
Example 2
As shown in fig. 2, the device comprises an air storage chamber 1, a sealing ring 2, a connecting pipe 6, an air outlet pipe 3 and two gas-liquid separation core bodies 4, wherein the two gas-liquid separation core bodies 4 are immersed in liquid, one ends of the two gas-liquid separation core bodies 4 are connected with two ends of the air outlet pipe 3 of the same tee joint, the other ends of the two gas-liquid separation core bodies 4 are communicated with each other through the U-shaped connecting pipe 6, and the third end of the air outlet pipe 3 is communicated with the air storage chamber 1 through the sealing ring 2.
If the gas-liquid separation device is required to be installed in a fluid pipeline and extends out of the side wall of the pipeline, the gas outlet pipe 3 is required to penetrate out of the pipe wall and is sealed by the sealing ring 2, and the sealing performance and leakage prevention are guaranteed. If it is not necessary to lead out from the side wall of the pipe, but only from the liquid level, the sealing ring 2 is not needed for sealing.
The gas-liquid separation core body 4 is of a spring spiral structure, and the surface of the gas-liquid separation core body is covered with a super-hydrophobic material coating. The gas-liquid separation core body 4 with a spring spiral structure is arranged in a fluid pipeline or a container, and the axis of the gas-liquid separation core body 4 is vertical to the moving direction of gas in liquid, so that the gas-liquid separation rate is increased, and the gas-liquid separation effect is improved.
The diameter d of the original spring wire of the gas-liquid separation core body 4 with the spiral spring structure is 0.1mm, a layer of super-hydrophobic coating with the thickness of 10 microns is sprayed on the surface of the spring wire, the distance between two adjacent spring wires is 1 micron finally, and the precipitation rate of gas in liquid can be increased on the premise that the inside and the outside of the spring are not leaked.
Under the condition that the difference | P1-P2| between the pressure P1 of the liquid environment outside the gas-liquid separation core 4 and the pressure P2 of the gas environment inside is less than or equal to 1atm, the gas storage chamber 1 is used for collecting gas.
If gas collection is not required, except for harmless gases, the gas outlet pipe can be directly communicated with the surrounding atmosphere.
The air outlet pipe 3 in this embodiment may also be directly connected to the atmosphere.
The implementation effect/result of the embodiment is fast, efficient and high in separation rate.
In a specific embodiment, a plurality of gas-liquid separation cores 4 may be used to perform large-area gas-liquid separation, and the plurality of gas-liquid separation cores 4 may be connected in series or in parallel at the end of the gas-liquid separation core 4 by a connection pipe 6 such as a U-shaped pipe, as shown in fig. 2.
Therefore, the gas-liquid separation core body is divided into a gas environment and a liquid environment inside and outside the net barrel-shaped or spring-shaped gas-liquid separation core body 4 by utilizing the characteristics of the super-hydrophobic material, and the gas is separated from the gas-liquid interface quickly under the action of the surface tension of the liquid at the gas-liquid interface, so that the gas in the liquid is separated out quickly, the gas-liquid separation efficiency is accelerated, and the gas-liquid separation effect is improved.
Claims (8)
1. A gas-liquid quick separation device for separating gas from liquid is characterized in that: the gas-liquid separation device comprises a gas outlet pipe (3) and at least one gas-liquid separation core body (4) for separating gas in liquid, wherein the gas-liquid separation core body (4) is immersed in the liquid, one end of the gas-liquid separation core body (4) is connected with one end of the gas outlet pipe (3), and the other end of the gas outlet pipe (3) is connected with the external atmosphere or a gas storage chamber (1);
the gas-liquid separation core body (4) is of a net barrel-shaped structure or a spring spiral structure, and the surface of the gas-liquid separation core body is covered with a super-hydrophobic material coating;
in the net barrel-shaped structure with the surface covered with the super-hydrophobic coating, the diameter of the net hole is 1 mu m-1 mm.
2. A gas-liquid rapid separation device for separating gas from liquid according to claim 1, characterized in that: in the spiral structure of the spring with the surface covered with the super-hydrophobic coating, the gap between adjacent spring wires is 1 mu m-1 mm.
3. A gas-liquid rapid separation device for separating gas from liquid according to claim 1, characterized in that: the difference | P1-P2| between the hydraulic pressure P1 of the liquid environment outside the gas-liquid separation core body (4) and the air pressure P2 of the gas environment inside the gas-liquid separation core body (4) is less than or equal to 1 atm.
4. A gas-liquid rapid separation device for separating gas from liquid according to claim 1, characterized in that: the other end of the gas-liquid separation core body (4) is plugged by a plug (5) or is communicated with other gas-liquid separation core bodies (4) through a connecting pipe (6).
5. A gas-liquid rapid separation device for separating gas from liquid according to claim 1, characterized in that: the gas-liquid separation core body array comprises a plurality of gas-liquid separation core bodies (4), wherein one ends of the gas-liquid separation core bodies (4) are connected to a gas storage chamber (1) or the external atmosphere through gas outlet pipes (3), and the other ends of the gas-liquid separation core bodies (4) are connected and communicated in immersed liquid through the same connecting pipe (6) to form a gas-liquid separation core body array.
6. A gas-liquid rapid separation device for separating gas from liquid according to claim 1, characterized in that: the outlet end of the air outlet pipe (3) extends out of the liquid level and is communicated with the outside atmosphere or the air storage chamber (1).
7. A gas-liquid rapid separation device for separating gas from liquid according to claim 1, characterized in that: the air outlet pipe (3) penetrates through the wall of the liquid container and then is communicated with the outside atmosphere or the air storage chamber (1), and the air outlet pipe (3) and the wall of the liquid container are sealed through a sealing ring (2).
8. A gas-liquid rapid separation apparatus for separating gas from liquid according to any one of claims 1 to 3, characterized in that: the gas-liquid quick separation device is suitable for static liquid and flowing liquid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810030317.8A CN108325240B (en) | 2018-01-12 | 2018-01-12 | Gas-liquid quick separation device for separating gas from liquid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810030317.8A CN108325240B (en) | 2018-01-12 | 2018-01-12 | Gas-liquid quick separation device for separating gas from liquid |
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| CN108325240A CN108325240A (en) | 2018-07-27 |
| CN108325240B true CN108325240B (en) | 2020-08-18 |
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| CN110025987B (en) * | 2019-03-26 | 2021-04-09 | 中国计量大学 | Self-priming gas-liquid separation device of self-priming multi-stage centrifugal pump |
| CN111075727A (en) * | 2019-12-19 | 2020-04-28 | 中国计量大学 | Vortex pump capable of reducing noise and enhancing self-suction and having super-hydrophobic gas-liquid separation function |
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| JPH0326882Y2 (en) * | 1986-12-12 | 1991-06-11 | ||
| JP2005147240A (en) * | 2003-11-14 | 2005-06-09 | Tlv Co Ltd | Gas-liquid separator |
| CN100531849C (en) * | 2006-07-05 | 2009-08-26 | 富准精密工业(深圳)有限公司 | Method and device for separating gas and liquid |
| CN106629928B (en) * | 2017-01-19 | 2018-10-02 | 中国石油大学(华东) | A kind of gas and water separator and its separation method with hydrophobic surface filter housing |
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