CN108325240B - A gas-liquid rapid separation device for separating gas from liquid - Google Patents

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

A gas-liquid rapid separation device for separating gas from liquid

technical field

The invention relates to chemical, food, hydraulic, medical, biological, papermaking and other industrial fields, in particular to a gas-liquid rapid separation device for separating gas from liquid as a separator for gas in liquid.

Background technique

Liquid and gas separation is the process of separating gas in liquid or separating liquid in gas to obtain pure liquid or pure gas by physical, chemical and other means, which belongs to the process of fluid separation. Common gas-liquid separation methods include gravity sedimentation, baffle separation, centrifugal force separation, wire mesh separation, ultrafiltration separation and packing separation. However, in the current engineering applications, gas-liquid separation devices have different shortcomings. Some of the current separation methods are incomplete, such as baffle separation; some are slow, such as gravity sedimentation. In practice, it is difficult to separate gases from liquids at high flow rates. Therefore, there is a need for a gas-liquid separation device that can rapidly separate gases from stationary and flowing liquids.

SUMMARY OF THE INVENTION

Aiming at the shortcomings of the above-mentioned existing gas-liquid separation devices, the present invention proposes a gas-liquid rapid separation device for separating gas from liquid, which utilizes the rapid precipitation characteristics of gas under the action of gas-liquid interface surface tension to perform gas-liquid separation, which can Fast and efficient separation of gases from liquids.

In order to realize the above-mentioned fast and efficient gas-liquid separation process, the technical scheme adopted in the present invention is:

The invention comprises an air outlet pipe and at least one gas-liquid separation core body for separating gas in the liquid, 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 Outside atmosphere or gas storage chamber.

The gas-liquid separation core is immersed in the liquid. Preferably, the axial direction of the gas-liquid separation core or the plane direction of the core group is perpendicular to the flow direction of the liquid.

The gas-liquid separation core has a mesh barrel structure or a spring helical structure, and the surface is covered with a super-hydrophobic material coating, which can meet the requirements of rapid gas separation in different liquids.

In the mesh barrel structure covered with superhydrophobic coating on the surface, the mesh diameter is 1 μm-1 mm. In the spring helical structure covered with superhydrophobic coating, the gap between adjacent spring wires is 1 μm-1 mm.

The mesh barrel structure is a sleeve structure with mesh holes, and the spring helical structure is a helical structure similar to the spring structure.

The gas-liquid separation core can separate air in water.

In a specific implementation, the diameter of the mesh in the gas-liquid separation core of the mesh barrel structure whose surface is not covered with a superhydrophobic coating is 10 μm-4 mm. The diameter d of the spring wire material in the gas-liquid separation core of the spring spiral structure not covered with superhydrophobic coating on the surface is 0.1-60mm, the middle diameter D of the spring is 1.1d-20d, and the spring pitch t is 1.1d-1.5d . Then, a superhydrophobic material coating is coated on the surface of the mesh barrel structure or the spring helical structure, and the thickness of the superhydrophobic coating is selected to be 5 μm-1.5 mm. The thickness of the coating is selected according to different spring structures, so that the diameter of each mesh is 1μm-1mm, or there is a gap of 1μm-1mm between the two spring wires, so that the gas can be smoothly separated from the liquid.

One end of the gas outlet pipe is connected to the gas-liquid separation core, and the other end can be connected to the gas storage chamber if the gas needs to be collected according to the specific situation; if the gas is a harmless gas that does not need to be collected and can be discharged into the surrounding air, It can communicate directly with the surrounding atmosphere.

The difference between the hydraulic pressure P1 of the liquid environment outside the gas-liquid separation core and the air pressure P2 of the gas environment inside the gas-liquid separation core |P1-P2| From the gas-liquid separation core to the liquid or the liquid entering the gas-liquid separation core.

The other end of the gas-liquid separation core is blocked with a plug, or is connected to other gas-liquid separation cores through a connecting pipe.

It includes a plurality of the gas-liquid separation cores, one end of the plurality of gas-liquid separation cores is connected to the gas storage chamber or the outside atmosphere through the gas outlet pipe, and the other ends of the plurality of gas-liquid separation cores are immersed through the same connecting pipe. The liquids are interconnected to form a gas-liquid separation core array.

The gas outlet pipe for transporting gas is a single-pass pipe or a multi-pass pipe, one end of which is communicated with the gas storage chamber or the outside atmosphere; the other end is communicated with the outlet end of one or more gas-liquid separation cores.

The outlet end of the air outlet pipe is connected and communicated with the external atmosphere or the air storage chamber after being protruded from the liquid surface.

The air outlet pipe passes through the wall of the liquid container and is connected to the outside atmosphere or the gas storage chamber. When extending from the pipe wall, the air outlet pipe and the wall of the liquid container are sealed by a sealing ring to prevent leakage.

The plug used to block the end of the gas-liquid separation core is in the shape of a truncated cone, and the material is rubber, metal or nylon.

The gas-liquid separation device is suitable for stationary liquids and flowing liquids.

Choose whether to use gas storage chamber, plug, sealing ring and connecting pipe according to the specific gas-liquid separation conditions.

In the present invention, the gas-liquid separation core is immersed in the stationary liquid horizontally or in the flowing liquid perpendicular to the direction of the liquid flow. Using the hydrophobic properties of super-hydrophobic materials to liquids, an air channel is closed in the mesh barrel or spring-shaped gas-liquid separation core, and the liquid environment is outside the gas-liquid separation core. When the gas contacts the gas-liquid separation in the shape of bubbles, When the core is on the surface, the effect of surface tension will make the bubbles merge with the gas-liquid interface in the gas-liquid separation core, the bubbles open, and the gas is discharged into the gas cavity in the mesh barrel or spring-shaped gas-liquid separation core to complete the gas-liquid separation. liquid separation process. The invention utilizes the hydrophobic property of the surface of the super-hydrophobic material to speed up the precipitation of the gas from the liquid and improve the gas-liquid separation efficiency and effect.

The beneficial effects of adopting the technical scheme of the present invention are:

The invention provides a new gas-liquid separation method for the gas-liquid separation process. By using super-hydrophobic materials to form a layer of gas-liquid interface on the surface of the mesh barrel or spring-like structure, the liquid and the gas are separated, and the effect of surface tension is used. And accelerate the speed of contact gas precipitation from the liquid, improve the gas-liquid separation efficiency, and increase the gas-liquid separation effect.

The gas-liquid rapid separation device of the invention has fast gas-liquid separation speed and good effect, can greatly improve the gas-liquid separation effect, and can be widely used in the fields of chemical industry, food, biology and the like.

Description of drawings

FIG. 1 is a schematic structural diagram of the device of the present invention with only one gas-liquid separation core.

Figure 2 is a schematic structural diagram of the device of the present invention having two gas-liquid separation cores.

FIG. 3 is a schematic diagram of the process principle of the gas-liquid separation core to collect gas according to the present invention.

In the figure: 1 is the gas storage chamber, 2 is the sealing ring, 3 is the gas outlet pipe, 4 is the gas-liquid separation core, 5 is the plug, and 6 is the connecting pipe.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in the figure, the present invention includes a gas-liquid separation core 4 whose surface is covered with a superhydrophobic coating and a plug 5 that blocks the end nozzle of the gas-liquid separation core 4, as shown in Figure 1, or is connected to other gas-liquid separation cores The connecting pipe 6, as shown in Figure 2. The gas outlet pipe 3 is connected to the outlet end of the gas-liquid separation core 4, 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 passes through the liquid pipe wall, the sealing ring 2 needs to be sealed to prevent the liquid from leaking from the pipeline. If it passes through the liquid surface, the sealing ring 2 can be omitted.

In order 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 is slowly separated from the gas-liquid separation core during the movement of the bubbles. 4 is in contact with the surface, as shown in a to b and c in Figure 3, when the bubbles contact the surface of the gas-liquid separation core 4, as shown in b in Figure 3, due to the superhydrophobic material formed on the surface of the gas At the liquid interface, the surface tension of the liquid will accelerate the precipitation of bubbles, that is, the process from b to c, and then to d. This quickly separates the gas in the liquid from the liquid.

The implementation process of the present invention is as follows:

Example 1

As shown in FIG. 1 , the device includes a gas storage chamber 1, a sealing ring 2, a plug 5, a gas outlet pipe 3 and a gas-liquid separation core 4. The gas-liquid separation core 4 is immersed in the liquid. One end is connected to one end of the gas outlet pipe 3 , the other end of the gas-liquid separation core 4 is blocked with a plug 5 , and the other end of the gas outlet pipe 3 is connected to the gas storage chamber 1 through the sealing ring 2 .

If the gas-liquid separation device of the present invention needs to be installed in the fluid pipeline and extended from the side wall of the pipeline, the gas outlet pipe 3 needs to be penetrated from the pipe wall and sealed with the sealing ring 2 to ensure tightness and no leakage. If it does not need to be drawn out from the side wall of the pipeline, but only extends from the liquid surface, the sealing ring 2 is not required for sealing.

The gas-liquid separation core 4 has a mesh barrel structure, and the surface is covered with a superhydrophobic material coating. Install the gas-liquid separation core 4 of the mesh barrel structure in the fluid pipeline or container, and the axis of the gas-liquid separation core 4 is perpendicular to the movement direction of the gas in the liquid, so as to increase the gas-liquid separation rate and improve the gas-liquid separation effect. .

The original mesh diameter of the gas-liquid separation core 4 with a mesh barrel structure is 10 μm, and a 4.5 μm thick superhydrophobic coating is sprayed on the surface of the mesh bucket to obtain a final mesh diameter of 1 μm.

When the difference 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 |P1-P2|≤1 atm, the gas storage chamber 1 is used for gas collection.

If it is not necessary to collect gas, but only to remove harmless gas, the outlet pipe can be directly connected to the surrounding atmosphere.

The air outlet pipe 3 in this embodiment can also be directly connected to the atmosphere.

The implementation effect/result of this embodiment is fast, efficient and high in separation rate.

Example 2

As shown in Figure 2, the device includes a gas storage chamber 1, a sealing ring 2, a connecting pipe 6, an air outlet pipe 3 and two gas-liquid separation cores 4, both of which are immersed in the liquid, and the two One end of the gas-liquid separation core 4 is connected with the two ends of the same three-way outlet pipe 3, the other ends of the two gas-liquid separation cores 4 are connected by a U-shaped connecting pipe 6, and the third end of the gas outlet pipe 3 is connected by a U-shaped connecting pipe 6. The sealing ring 2 is in communication with the gas storage chamber 1 .

If the gas-liquid separation device of the present invention needs to be installed in the fluid pipeline and extended from the side wall of the pipeline, the gas outlet pipe 3 needs to be penetrated from the pipe wall and sealed with the sealing ring 2 to ensure tightness and no leakage. If it does not need to be drawn out from the side wall of the pipeline, but only extends from the liquid surface, the sealing ring 2 is not required for sealing.

The gas-liquid separation core 4 is a spring helical structure, and the surface is covered with a superhydrophobic material coating. The gas-liquid separation core 4 with the spring spiral structure is installed in the fluid pipeline or container, and the axis of the gas-liquid separation core 4 is perpendicular to the movement direction of the gas in the liquid, so as to increase the gas-liquid separation rate and improve the gas-liquid separation effect. .

The diameter d of the original spring wire of the gas-liquid separation core 4 of the spring spiral structure is 0.1 mm, and a 10 μm thick super-hydrophobic coating is sprayed on the surface of the spring wire, so that the distance between the two adjacent spring wires is 1 μm. , can increase the precipitation rate of gas in the liquid under the premise of no leakage inside and outside the spring.

When the difference 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 |P1-P2|≤1 atm, the gas storage chamber 1 is used for gas collection.

If it is not necessary to collect gas, but only to remove harmless gas, the outlet pipe can be directly connected to the surrounding atmosphere.

The air outlet pipe 3 in this embodiment can also be directly connected to the atmosphere.

The implementation effect/result of this embodiment is fast, efficient and high in separation rate.

In the specific implementation, a plurality of gas-liquid separation cores 4 can be used for large-area gas-liquid separation, and the ends of the gas-liquid separation cores 4 can be connected in series by connecting pipes 6 such as U-shaped pipes. or in parallel, as shown in Figure 2.

It can be seen that the present invention utilizes the characteristics of super-hydrophobic materials to separate the inside and outside of the mesh barrel-shaped or spring-shaped gas-liquid separation core 4 into a gas environment and a liquid environment, and utilizes the effect of liquid surface tension at the gas-liquid interface to accelerate The gas is precipitated from the gas-liquid interface, which realizes the rapid precipitation of gas in the liquid, accelerates the gas-liquid separation efficiency and improves the gas-liquid separation effect.

Claims (8)

1. A gas-liquid rapid separation device for separating gas from liquid, characterized in that it comprises a gas outlet pipe (3) and at least one gas-liquid separation core (4) for separating gas in the liquid, and the gas-liquid separation The core body (4) is immersed in the liquid, one end of the gas-liquid separation core body (4) is connected to one end of the gas outlet pipe (3), and the other end of the gas outlet pipe (3) is connected to the outside atmosphere or the gas storage chamber (1); The gas-liquid separation core (4) has a net barrel structure or a spring helical structure, and the surface is covered with a superhydrophobic material coating; In the mesh barrel structure covered with superhydrophobic coating on the surface, the mesh diameter is 1 μm-1 mm. 2. a kind of gas-liquid rapid separation device for separating gas from liquid according to claim 1, is characterized in that: in the spring helical structure that surface is covered with super-hydrophobic coating, the gap between adjacent spring wires 1μm-1mm. 3. A gas-liquid rapid separation device for separating gas from liquid according to claim 1, characterized in that: the hydraulic pressure P1 of the liquid environment outside the gas-liquid separation core (4) is separated from the gas-liquid The difference between the air pressure P2 of the gas environment in the core (4) | P1-P2 |≤1atm. 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 (4) is blocked with a plug (5). , or connected with other gas-liquid separation cores (4) through the connecting pipe (6). 5. A gas-liquid rapid separation device for separating gas from liquid according to claim 1, characterized in that it comprises a plurality of the gas-liquid separation cores (4), a plurality of gas-liquid separation cores One end of the body (4) is connected to the air storage chamber (1) or the outside atmosphere through the air outlet pipe (3), and the other ends of the multiple gas-liquid separation core bodies (4) are all in the immersed liquid through the same connecting pipe (6). Connected and communicated to form a gas-liquid separation core array. 6 . The gas-liquid rapid separation device for separating gas from liquid according to claim 1 , wherein the outlet end of the gas outlet pipe ( 3 ) protrudes from the liquid surface and communicates with the outside atmosphere or storage. 7 . The air chamber (1) is connected and communicated. 7 . The gas-liquid rapid separation device for separating gas from liquid according to claim 1 , wherein the gas outlet pipe ( 3 ) passes through the wall of the liquid container and is separated from the outside atmosphere or the gas storage chamber ( 7 . 1) The connection is connected, and the air outlet pipe (3) and the wall of the liquid container are sealed by the sealing ring (2). 8. A gas-liquid rapid separation device for separating gas from liquid according to any one of claims 1-3, wherein the gas-liquid rapid separation device is suitable for static liquid and flowing liquid.

Images