Pipeline rotational flow gas-liquid separation device and method

Abstract

The invention discloses a pipeline rotational flow gas-liquid separation device and method.The separation device comprises a rotational flow pipe, a separation pipe and a liquid collection pipe, a multi-blade rotational flow device is arranged in the rotational flow pipe and used for making a gas-liquid mixture generate rotational flow, and liquid moves along the inner wall of the rotational flow pipe under the action of centrifugal force and forms a rotational flow liquid film; gas moves along the center of the cyclone pipe and forms a gaseous core; an outlet end is arranged at one end, far away from the cyclone pipe, of the separation pipe, a plurality of tangential separation holes are formed in the separation pipe, and the orientation of the tangential separation holes is consistent with the movement direction of the cyclone liquid membrane; the liquid collecting pipe is arranged on the outer side of the separating pipe in a sleeving mode, and a liquid collecting cavity is formed between the liquid collecting pipe and the separating pipe and communicates with the tangential separating hole. The pipeline rotational flow gas-liquid separation device is simple in structure, small in overall size, light in weight, low in manufacturing cost, wide in airflow speed application range, high in gas-liquid separation efficiency and capable of achieving a good gas-liquid separation effect under the condition of small pressure loss.

Description

Technical Field

[0001] The invention belongs to the technical field of gas-liquid separation, and in particular relates to a pipeline cyclone gas-liquid separation device and method. Background Art

[0002] Gas-liquid separation technology is a key technology widely used in chemical, petroleum, pharmaceutical, food processing, environmental protection and other fields. The core of this technology is to effectively separate gas and liquid from the mixture to achieve the effective utilization of resources, improve product quality, reduce environmental pollution and other purposes. Traditional separation technology uses gravity sedimentation, relying on the density difference between gas and liquid to allow the heavier liquid to naturally settle to the bottom, or uses a cyclone separator to separate gas and liquid by centrifugal force, or uses a packed tower to increase the gas-liquid contact area through packing to promote separation. Traditional gas-liquid separation devices have defects such as large size, small applicable range of airflow velocity, high cost, and gas-liquid separation effect often does not meet the design requirements. Summary of the invention

[0003] The object of the present invention is to provide a pipeline cyclone gas-liquid separation device and method for solving the above-mentioned problems existing in the prior art.

[0004] In order to achieve the above-mentioned purpose, on the one hand, the present invention adopts the following technical scheme: a pipeline cyclone gas-liquid separation device, comprising a cyclone tube, a separation tube and a liquid collecting tube, one end of the cyclone tube is provided with an inlet end, the other end of the cyclone tube is connected with the separation tube, a multi-leaf cyclone device is provided inside the cyclone tube, the multi-leaf cyclone device is used to make the gas-liquid mixture produce a cyclone, the liquid moves along the inner wall of the cyclone tube under the action of centrifugal force and forms a cyclone liquid film, the gas moves along the center of the cyclone tube and forms a gas core; the separation tube is provided with an outlet end at one end away from the cyclone tube, and a plurality of tangential separation holes are provided on the separation tube, the direction of the tangential separation holes is consistent with the movement direction of the cyclone liquid film; the liquid collecting tube is sleeved on the outside of the separation tube, and a liquid collecting cavity is provided between the liquid collecting tube and the separation tube, and the liquid collecting cavity is connected with the tangential separation hole.

[0005] As an optional implementation of the above technical solution, the multi-blade swirl device includes at least three spiral blades, the spiral angle of the spiral blades is 20° to 45°, and the rotation direction of the spiral blades is left-handed or right-handed.

[0006] As an optional implementation of the above technical solution, the rotation direction of the spiral blade is consistent with the direction of the tangential separation hole.

[0007] As an optional implementation of the above technical solution, the tangential separation hole is tangent to the wall of the separation tube.

[0008] As an optional implementation of the above technical solution, the separation tube is provided with a plurality of rows of tangential separation hole groups along its length direction, and each row of tangential separation hole groups includes a plurality of tangential separation holes arranged at equal intervals.

[0009] As an optional implementation of the above technical solution, a liquid output mechanism is provided on the liquid collecting pipe.

[0010] As an optional implementation of the above technical solution, the liquid output mechanism includes a liquid output connector and a control ball valve, the liquid output connector is arranged on the liquid collecting pipe, and the control ball valve is connected to the liquid output connector.

[0011] As an optional implementation of the above technical solution, the liquid output connector is welded to the liquid collecting pipe, and a thread connected to the control ball valve thread is provided on the liquid output connector.

[0012] As an optional implementation of the above technical solution, the inner diameters of the cyclone tube and the separation tube are the same.

[0013] As an optional implementation of the above technical solution, the ends of the cyclone tube and the separation tube that are close to each other are fixed by welding.

[0014] As an optional implementation of the above technical solution, the inlet end is provided with an inlet flange, and the outlet end is provided with an outlet flange.

[0015] On the other hand, the present invention adopts the following technical scheme: a pipeline cyclone gas-liquid separation method, adopting the above-mentioned pipeline cyclone gas-liquid separation device, the pipeline cyclone gas-liquid separation method includes the following steps: introducing the gas-liquid mixture into the cyclone tube through the inlet end, using a multi-leaf cyclone device to make the gas-liquid mixture produce a cyclone, the liquid moves along the inner wall of the cyclone tube under the action of centrifugal force and forms a cyclone liquid film, the gas moves along the center of the cyclone tube and forms a gaseous core, when the cyclone liquid film and the gaseous core enter the separation tube, because the direction of the tangential separation hole is consistent with the movement direction of the cyclone liquid film, the cyclone liquid film enters the liquid collecting chamber through the tangential separation hole, and the gaseous core and residual liquid are discharged through the outlet end.

[0016] The beneficial effects of the present invention are:

[0017] (1) The present invention utilizes a multi-blade cyclone device to generate a cyclone in the gas-liquid mixture. Under the action of centrifugal force, the liquid moves along the inner wall of the cyclone tube and forms a cyclone liquid film, and the gas moves along the center of the cyclone tube and forms a gas core, thereby preliminarily realizing the function of gas-liquid separation.

[0018] (2) The direction of the tangential separation hole on the separation tube is consistent with the rotation direction of the spiral blade, and the movement direction of the swirl liquid film is also consistent with the direction of the tangential separation hole. The liquid outflow resistance is very small, and the swirl liquid film directly enters the tangential separation hole and then enters the liquid collecting chamber, thereby increasing the gas-liquid separation capacity.

[0019] (3) The swirling liquid film is discharged through the tangential separation holes during the movement, which has minimal disturbance to the gas core in the center of the separation tube, achieving a better gas-liquid separation effect under a smaller pressure loss, and can effectively increase the applicable range of air flow velocity.

[0020] (4) Gas-liquid separation can be completed in the pipeline. The entire device is small in size, low in cost, maintenance-free, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front structural schematic diagram of a pipeline cyclone gas-liquid separation device in one embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of a top view of the structure of a pipeline cyclone gas-liquid separation device in one embodiment of the present invention;

[0023] Figure 3 is a motion state diagram of a swirling liquid film and a gas core in one embodiment of the present invention;

[0024] Figure 4 It is a schematic structural diagram of a multi-blade swirl device in one embodiment of the present invention.

[0025] In the figure: 1-inlet flange; 2-swirl tube; 3-multi-leaf swirl device; 4-tangential separation hole; 5-outlet flange; 6-control ball valve; 7-pair thread; 8-liquid output connector; 9-liquid collecting pipe; 10-separation tube; 11-spiral blade; 12-swirl liquid membrane; 13-gas core. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 4 As shown, this embodiment provides a pipeline cyclone gas-liquid separation device, including a cyclone tube 2, a separation tube 10 and a liquid collecting pipe 9. One end of the cyclone tube 2 is provided with an inlet end, and the other end of the cyclone tube 2 is connected to the separation tube 10. The inner diameters of the cyclone tube 2 and the separation tube 10 are the same. The cyclone tube 2 and the separation tube 10 can adopt an integrally formed structure, or the cyclone tube 2 and the separation tube 10 can be fixed by welding or a detachable connection. A multi-leaf cyclone device 3 is provided inside the cyclone tube 2, and the multi-leaf cyclone device 3 is used to make the gas-liquid mixture produce a cyclone. Under the action of centrifugal force, the liquid moves along the inner wall of the cyclone tube 2 and forms a cyclone liquid film 12, and the gas moves along the center of the cyclone tube 2 and forms a gas core 13. As shown Figure 3As shown, the gas-liquid mixture entering the cyclone tube 2 moves along the inner wall of the cyclone tube 2 and the gas core 13 moves along the center of the cyclone tube 2 under the action of the multi-blade cyclone device 3, and then enters the separation tube 10 together.

[0027] The separation tube 10 is provided with an outlet end at one end away from the cyclone tube 2, and a plurality of tangential separation holes 4 are provided on the separation tube 10, and the orientation of the tangential separation holes 4 is consistent with the movement direction of the cyclone liquid film 12. After the cyclone liquid film 12 and the gas core 13 enter the separation tube 10 together, when the cyclone liquid film 12 passes through the tangential separation holes 4 on the separation tube 10, because the orientation of the tangential separation holes 4 is consistent with the movement direction of the cyclone liquid film 12, the outflow resistance of the cyclone liquid film 12 is very small, and the cyclone liquid film 12 can directly enter the tangential separation holes 4.

[0028] The collecting pipe 9 is sleeved on the outside of the separation pipe 10, and a collecting chamber is provided between the collecting pipe 9 and the separation pipe 10, and the collecting chamber is communicated with the tangential separation hole 4. Sealing plates are provided at both ends of the collecting pipe 9, so that the collecting pipe 9 and the separation pipe 10 form a closed space, which serves as the collecting chamber, and the liquid discharged through the tangential separation hole 4 is stored in the collecting chamber.

[0029] When the pipeline cyclone gas-liquid separation device is in use, the gas-liquid mixture is introduced into the cyclone tube 2 through the inlet end, and the gas-liquid mixture is cycloneed by the multi-leaf cyclone device 3. The liquid moves along the inner wall of the cyclone tube 2 under the action of centrifugal force and forms a cyclone liquid film 12, and the gas moves along the center of the cyclone tube 2 to form a gas core 13. When the cyclone liquid film 12 and the gas core 13 enter the separation tube 10, because the direction of the tangential separation hole 4 is consistent with the movement direction of the cyclone liquid film 12, the cyclone liquid film 12 enters the liquid collecting chamber through the tangential separation hole 4, and the gas core 13 and the residual liquid are discharged through the outlet end.

[0030] The pipeline cyclone gas-liquid separation device of the present invention has a simple structure, a small overall volume, a light weight, a low cost, a wide applicable range of air flow velocity, a high gas-liquid separation efficiency, and can achieve a better gas-liquid separation effect under a smaller pressure loss.

[0031] like Figure 4 As shown, in a specific embodiment, the multi-blade swirl device 3 includes at least three spiral blades 11, the spiral angle of the spiral blades 11 is 20° to 45°, and the rotation direction of the spiral blades 11 is left-handed or right-handed, so that the liquid in the gas-liquid mixture moves along the inner wall of the swirl tube 2 under the action of centrifugal force and forms a swirl liquid film 12, and the gas in the gas-liquid mixture moves along the center of the swirl tube 2 and forms a gas core 13. Preferably, the rotation direction of the spiral blades 11 is consistent with the direction of the tangential separation hole 4, and the tangential separation hole 4 is tangential to the tube wall of the separation tube 10.

[0032] In order to increase the gas-liquid separation efficiency, the separation tube 10 is provided with multiple rows of tangential separation hole groups along its length direction, and each row of tangential separation hole groups includes multiple tangential separation holes 4 arranged at equal intervals. When the cyclonic liquid membrane 12 passes through the tangential separation holes 4, it can enter the liquid collecting chamber through the tangential separation holes 4.

[0033] like Figure 1 and Figure 2 As shown, in a specific embodiment, the liquid collecting pipe 9 is provided with a liquid output mechanism. Specifically, the liquid output mechanism includes a liquid output joint 8 and a control ball valve 6, the liquid output joint 8 is provided on the liquid collecting pipe 9, and the control ball valve 6 is connected to the liquid output joint 8. Preferably, the liquid output joint 8 is welded to the liquid collecting pipe 9, and the liquid output joint 8 is provided with a thread 7 threadedly connected to the control ball valve 6. The residual amount of liquid in the liquid collecting chamber can be controlled by the control ball valve 6, and the liquid output joint 8 is threadedly connected to the control ball valve 6, which facilitates the assembly of the liquid output joint 8 and the control ball valve 6.

[0034] In a specific embodiment, the inlet end is welded with an inlet flange 1, and the outlet end is welded with an outlet flange 5. The inlet flange 1 is used to connect the input pipeline of the gas-liquid mixture to facilitate the input of the gas-liquid mixture. The outlet flange 5 is used to connect the gas input pipeline to facilitate the output of the gas.

[0035] The pipeline cyclone gas-liquid separation device provided by the present invention mainly comprises an inlet flange 1, a cyclone tube 2, a multi-leaf cyclone device 3, a separation tube 10, a tangential separation hole 4, an outlet flange 5, a control ball valve 6, a liquid output joint 8 and a liquid collecting pipe 9. Among them, the multi-leaf cyclone device 3 comprises a plurality of spiral blades 11, the spiral angle of the spiral blades 11 is 20° to 45°, the number of the spiral blades 11 is more than three, and the rotation direction is left-handed or right-handed. A plurality of tangential separation holes 4 are arranged on the separation tube 10, the direction of the tangential separation holes 4 is consistent with the rotation direction of the spiral blades 11, the tangential separation holes 4 are tangent to the tube wall of the separation tube 10, the inlet end of the separation tube 10 is welded to the cyclone tube 2, and the outlet end of the separation tube 10 is welded to the outlet flange 5. The liquid collecting pipe 9 and the separation tube 10 form a closed space, the lower end of which is provided with a liquid output joint 8, the liquid output joint 8 is fixed to the liquid collecting pipe 9 by welding, and the liquid output joint 8 is connected to the control ball valve 6 by a thread 7.

[0036] The present embodiment also provides a pipeline cyclone gas-liquid separation method, comprising the following steps: after the gas-liquid mixture enters the cyclone tube 2 through the inlet flange 1, a cyclone is generated by the multi-blade cyclone device 3, the liquid moves toward the wall of the separation tube 10 under the action of centrifugal force to form a cyclone liquid film 12 that flows along the wall, and the gas moves toward the center of the separation tube 10 to form a gas core 13. When the cyclone liquid film 12 and the gas core 13 pass through the tangential separation hole 4 on the separation tube 10, because the direction of the tangential separation hole 4 is consistent with the rotation direction of the spiral blade 11, the rotation direction of the cyclone liquid film 12 is also consistent with the direction of the tangential separation hole 4, and the outflow resistance is very small. The cyclone liquid film 12 directly enters the tangential separation hole 4, and then enters the liquid collecting chamber, and is discharged through the liquid output joint 8 and the control ball valve 6 under the action of centrifugal force and gravity. The control ball valve 6 can control the residual amount of liquid in the liquid collecting chamber. The gas core 13 and the residual liquid after separation are discharged through the outlet flange 5, and the gas-liquid separation process is completed.

[0037] Compared with the prior art, the present invention has the following advantages:

[0038] (1) The present invention utilizes a multi-blade cyclone device 3 to generate a cyclone in the gas-liquid mixture. Under the action of centrifugal force, the liquid moves along the inner wall of the cyclone tube 2 and forms a cyclone liquid film 12, and the gas moves along the center of the cyclone tube 2 and forms a gas core 13, thereby preliminarily realizing the function of gas-liquid separation.

[0039] (2) The direction of the tangential separation hole 4 on the separation tube 10 is consistent with the rotation direction of the spiral blade 11, and the movement direction of the swirl liquid membrane 12 is also consistent with the direction of the tangential separation hole 4. The liquid outflow resistance is very small, and the swirl liquid membrane 12 directly enters the tangential separation hole 4 and then enters the liquid collecting chamber, thereby increasing the gas-liquid separation capacity.

[0040] (3) The cyclonic liquid membrane 12 is discharged through the tangential separation hole 4 during movement, which causes minimal disturbance to the gas core 13 in the center of the separation tube 10, thereby achieving a better gas-liquid separation effect under a smaller pressure loss, and effectively increasing the applicable range of the gas flow velocity.

[0041] (4) Gas-liquid separation can be completed in the pipeline. The entire device is small in size, low in cost, maintenance-free, and has a wide range of applications.

[0042] In the description of the present invention, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, and may be fixedly connected, detachably connected, or integrated; may be mechanically connected or electrically connected; may be directly connected or indirectly connected through an intermediate medium, may be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood. In addition, the specific features, structures, etc. described in the embodiments are included in at least one embodiment. Under the condition that there is no contradiction, those skilled in the art may combine the features of different embodiments. The protection scope of the present invention is not limited to the above-mentioned specific embodiments. According to the basic technical concept of the present invention, the embodiments that can be associated with by ordinary technicians in this field without creative work all belong to the protection scope of the present invention.

Claims

1. A pipeline cyclone gas-liquid separation device, characterized in that: The invention comprises a swirl tube (2), a separation tube (10) and a liquid collecting tube (9), wherein one end of the swirl tube (2) is provided with an inlet end, and the other end of the swirl tube (2) is connected to the separation tube (10), and a multi-leaf swirl device (3) is provided inside the swirl tube (2), and the multi-leaf swirl device (3) is used to generate a swirl of a gas-liquid mixture, and the liquid moves along the inner wall of the swirl tube (2) under the action of centrifugal force and forms a swirl liquid film (12), and the gas moves along the center of the swirl tube (2). The separation tube (10) is provided with an outlet end at one end away from the cyclone tube (2), and a plurality of tangential separation holes (4) are provided on the separation tube (10), and the orientation of the tangential separation holes (4) is consistent with the movement direction of the cyclone liquid film (12); the liquid collecting tube (9) is sleeved on the outer side of the separation tube (10), and a liquid collecting cavity is provided between the liquid collecting tube (9) and the separation tube (10), and the liquid collecting cavity is connected to the tangential separation holes (4).

2. The pipeline cyclone gas-liquid separation device according to claim 1, characterized in that: The multi-blade swirl device (3) comprises at least three spiral blades (11), the spiral angle of the spiral blades (11) is 20° to 45°, and the rotation direction of the spiral blades (11) is left-handed or right-handed.

3. The pipeline cyclone gas-liquid separation device according to claim 2, characterized in that: The direction of rotation of the spiral blade (11) is consistent with the direction of the tangential separation hole (4); the tangential separation hole (4) is tangential to the wall of the separation tube (10).

4. The pipeline cyclone gas-liquid separation device according to claim 1, characterized in that: The separation tube (10) is provided with a plurality of rows of tangential separation hole groups along its length direction, and each row of tangential separation hole groups comprises a plurality of tangential separation holes (4) arranged at equal intervals.

5. The pipeline cyclone gas-liquid separation device according to claim 1, characterized in that: The liquid collecting pipe (9) is provided with a liquid output mechanism.

6. The pipeline cyclone gas-liquid separation device according to claim 5, characterized in that: The liquid output mechanism comprises a liquid output connector (8) and a control ball valve (6); the liquid output connector (8) is arranged on a liquid collecting pipe (9); and the control ball valve (6) is connected to the liquid output connector (8).

7. The pipeline cyclone gas-liquid separation device according to claim 6, characterized in that: The liquid output joint (8) is welded to the liquid collecting pipe (9), and a threaded connection (7) which is threadedly connected to the control ball valve (6) is provided on the liquid output joint (8).

8. The pipeline cyclone gas-liquid separation device according to claim 1, characterized in that: The inner diameters of the cyclone tube (2) and the separation tube (10) are the same.

9. The pipeline cyclone gas-liquid separation device according to claim 1, characterized in that: The ends of the cyclone tube (2) and the separation tube (10) that are close to each other are fixed by welding; the inlet end is provided with an inlet flange (1), and the outlet end is provided with an outlet flange (5).

10. A pipeline cyclone gas-liquid separation method, characterized in that: The pipeline cyclone gas-liquid separation device according to any one of claims 1 to 9 is used, and the pipeline cyclone gas-liquid separation method comprises the following steps: introducing a gas-liquid mixture into a cyclone tube (2) through an inlet end, using a multi-blade cyclone device (3) to cause the gas-liquid mixture to generate a cyclone, the liquid moves along the inner wall of the cyclone tube (2) under the action of centrifugal force and forms a cyclone liquid film (12), the gas moves along the center of the cyclone tube (2) and forms a gas core (13), when the cyclone liquid film (12) and the gas core (13) enter the separation tube (10), because the direction of the tangential separation hole (4) is consistent with the movement direction of the cyclone liquid film (12), the cyclone liquid film (12) enters the liquid collecting chamber through the tangential separation hole (4), and the gas core (13) and the residual liquid are discharged through the outlet end.

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