A gas-liquid separator and a gas-liquid separation method

Abstract

The present invention relates to the technical field related to gas-liquid separation, specifically to a gas-liquid separator and a gas-liquid separation method, comprising a mounting frame and a separation tank fixedly mounted on the mounting frame, a centrifugal bucket being arranged on the inner side of the separation tank, and an inlet pipe being arranged on the separation tank, the inlet pipe being connected to the inner side of the centrifugal bucket and entering the centrifugal bucket along a tangential direction; a blocking unit being arranged on the inner side of the centrifugal bucket, and in accordance with the present invention, since the centrifugal forces exerted on liquid and gas are different, the liquid has a tendency to be centrifugally separated, and the liquid performs a threaded rotation motion along the inside of the centrifugal bucket, and collides with the inside of the centrifugal bucket when flowing, and is easily broken up, and finer droplets are generated and flow in a direction away from the inner wall of the centrifugal bucket, and under the action of the blocking unit, the rebounded liquid passes through the edge of the centrifugal bucket and is collected, thereby preventing the droplets from returning to the gas phase, so as to improve the gas-liquid separation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field related to gas-liquid separation, and in particular to a gas-liquid separator and a gas-liquid separation method. Background Art

[0002] Gas-liquid separation plays a very important role in the industrial field. It is used in oil and gas, coal chemical industry, petrochemical industry, water electrolysis to produce hydrogen, carbon dioxide capture and other fields. It can effectively separate gas and liquid components, improve the purity and quality of products, reduce equipment corrosion and blockage, reduce production costs, and improve production efficiency and economic benefits.

[0003] The gas-liquid separator is a separation device that uses the principles of centrifugal separation and wire mesh filtration to achieve liquid removal. It is mainly composed of a cylinder, a cyclone separator, a high-efficiency foam breaking net, a drain valve and other main components. It is generally installed in front of the drying device to achieve coarse filtration to remove part of the moisture in the air to reduce the workload of the drying device. There are many separation structures used in gas-liquid separators, and the separation methods include: gravity sedimentation, baffle separation, centrifugal separation, wire mesh separation, ultrafiltration separation, packing separation, etc.

[0004] In the existing gas-liquid separator method for centrifugal separation, the gas-liquid mixture enters the centrifugal barrel along the tangent direction of the barrel. Under the action of centrifugation and gravity, the liquid flows along the inside to the bottom of the centrifugal barrel. Since the centrifugal force on the gas is smaller than that on the liquid, gas-liquid separation occurs. However, the liquid collides with the barrel wall when flowing, resulting in finer droplets returning to the gas phase. There is actually a possibility that the outflowing gas carries liquid, resulting in a reduced effect of gas-liquid separation. Summary of the invention

[0005] The object of the present invention is to provide a gas-liquid separator to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A gas-liquid separator comprises a mounting frame and a separation tank fixedly mounted on the mounting frame, wherein a centrifugal bucket is arranged inside the separation tank.

[0008] It also includes an inlet pipe disposed on the separation tank, the inlet pipe being in communication with the inner side of the centrifugal bucket and entering the centrifugal bucket along a tangential direction;

[0009] The blocking unit is arranged inside the centrifugal barrel. The gas-liquid mixture enters the centrifugal barrel along the inlet pipe and collides and flows in the reverse direction. Under the action of the blocking unit, the rebounded liquid passes through the edge of the centrifugal barrel and is collected.

[0010] The gas-liquid separator as described above: the centrifugal barrel is provided with a plurality of through grooves arranged in a threaded shape.

[0011] The gas-liquid separator as described above: the blocking unit comprises a plurality of baffles rotatably mounted in the through grooves, and the baffles are inclined in the centrifugal barrel.

[0012] The gas-liquid separator as described above: the inclination direction of the baffle is opposite to the flow direction of the gas-liquid mixture entering the centrifugal barrel.

[0013] The gas-liquid separator as described above: the centrifugal barrel is outer-mounted with a water absorption cylinder, and the inner wall of the water absorption cylinder abuts against the outer wall of the centrifugal barrel.

[0014] The gas-liquid separator as described above: the rotating shaft of the baffle is connected to the adjusting member arranged in the separation tank, and the adjusting member includes an annular member rotatably installed in the separation tank, and the annular member has latch teeth distributed along the circumference, and the latch teeth are engaged with the gears arranged on the rotating shaft.

[0015] The gas-liquid separator as described above: the separation tank is provided with an air outlet pipe and a water outlet pipe, and the water outlet pipe is communicated with a negative pressure device fixedly installed on the mounting frame.

[0016] A gas-liquid separation method, using any one of the above gas-liquid separators, comprises the following steps:

[0017] Step 1: transporting the gas-liquid mixture to be separated into the centrifugal barrel along the inlet pipe;

[0018] Step 2: The gas-liquid mixture enters the centrifugal barrel, generates centrifugal motion in the centrifugal barrel, and the gas-liquid mixture collides with the inner wall of the centrifugal barrel. Under the action of gravity, the gas goes up and the liquid goes down;

[0019] Step three: After the liquid collides with the centrifugal bucket, it rebounds toward the middle of the centrifugal bucket. Under the action of the blocking unit, the rebounded liquid passes through the edge of the centrifugal bucket and is collected, thereby preventing the liquid from being mixed in when the gas is separated.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the gas-liquid mixture enters the centrifugal barrel along the tangential direction of the centrifugal barrel. Since the liquid and the gas are subjected to different centrifugal forces, the liquid tends to be centrifugally separated. The liquid makes a spiral rotation along the interior of the centrifugal barrel. When the liquid flows, it collides with the interior of the centrifugal barrel and is easily broken up, producing finer droplets that flow in a direction away from the inner wall of the centrifugal barrel. Under the action of the blocking unit, the rebounded liquid passes through the edge of the centrifugal barrel and is collected, thereby preventing the droplets from returning to the gas phase, so as to improve the gas-liquid separation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of the gas-liquid separator.

[0022] Figure 2 Schematic diagram of the internal structure of the separation tank in the gas-liquid separator.

[0023] Figure 3 It is a schematic diagram of the structure of the separation tank and the centrifugal barrel in the gas-liquid separator.

[0024] Figure 4 It is a schematic diagram of the structure of the water suction cylinder and the centrifugal bucket in the gas-liquid separator.

[0025] Figure 5 It is a schematic diagram of the structure of the centrifugal barrel and the barrier unit in the gas-liquid separator.

[0026] Figure 6 Schematic diagram of the structure of the barrier unit in the gas-liquid separator.

[0027] Figure 7 It is a schematic diagram of the structure of the blocking unit and the regulating part in the gas-liquid separator.

[0028] In the figure: 1, separation tank; 101, inlet pipe; 102, air outlet pipe; 103, water outlet pipe; 2, negative pressure device; 3, water suction cylinder; 4, cover plate; 5, ring member; 6, drive shaft; 7, centrifugal barrel; 701, through groove; 8, mounting frame; 9, gear; 10, baffle. DETAILED DESCRIPTION

[0029] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0030] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0031] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific examples below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0032] See also Figure 1 to Figure 7 In the present invention, a gas-liquid separator includes a separation tank 1, an inlet pipe 101, a centrifugal bucket 7, a mounting frame 8, and a blocking unit.

[0033] The separation tank 1 is fixedly mounted on the mounting frame 8, and a centrifugal bucket 7 is arranged inside the separation tank 1.

[0034] It also includes an inlet pipe 101 disposed on the separation tank 1, the inlet pipe 101 is communicated with the inner side of the centrifugal bucket 7 and enters the centrifugal bucket 7 along a tangential direction;

[0035] The blocking unit is arranged inside the centrifugal bucket 7 , and the gas-liquid mixture enters the centrifugal bucket 7 along the inlet pipe 101 and collides and flows in the reverse direction. Under the action of the blocking unit, the rebounded liquid passes through the edge of the centrifugal bucket 7 and is collected.

[0036] In detail, in the present invention, the gas-liquid separator described in the present invention is adopted. When in use, the gas-liquid mixture enters the centrifugal barrel 7 along the tangential direction of the centrifugal barrel 7. Since the centrifugal forces exerted on the liquid and the gas are different, the liquid tends to be centrifugally separated. The liquid makes a spiral rotation along the interior of the centrifugal barrel 7. When the liquid flows, it collides with the interior of the centrifugal barrel 7 and is easily broken up, producing finer droplets that flow in a direction away from the inner wall of the centrifugal barrel 7. Under the action of the blocking unit, the rebounded liquid passes through the edge of the centrifugal barrel 7 and is collected, thereby preventing the droplets from returning to the gas phase, so as to improve the gas-liquid separation efficiency.

[0037] Preferably, the centrifugal barrel 7 is provided with a plurality of through grooves 701 arranged in a threaded shape, the main purpose of which is to allow the liquid reflected by the obstruction of the blocking unit to pass through the through grooves 701, wherein a liquid collecting piece is provided outside the through grooves 701, which can quickly collect the liquid and prevent the liquid from colliding with the inside of the centrifugal barrel 7 again.

[0038] It should be noted that the liquid in the centrifugal barrel 7 flows in a spiral line toward the center along the inner wall of the barrel. Therefore, multiple through grooves 701 are arranged along the flow direction of the liquid, so that the gas-liquid mixture can be separated by centrifugal force in the centrifugal barrel 7 while the separated liquid can be effectively collected.

[0039] See also Figure 5 The blocking unit includes a plurality of baffles 10 rotatably mounted in the through slots 701 , and the baffles 10 are inclined in the centrifugal barrel 7 .

[0040] In detail, after the gas-liquid mixture enters the centrifugal barrel 7 along the tangential direction of the centrifugal barrel 7, the interior of the centrifugal barrel 7 is circular. Under the action of centrifugal force, the centrifugal forces exerted on the liquid and the gas are different, thereby separating the liquid and the gas. However, under the action of centrifugal force and gravity, the liquid does not fall vertically downward. With the cooperation of the interior of the centrifugal barrel 7, the liquid flows along the inner wall of the barrel in the centrifugal barrel 7 and flows toward the center in a spiral line. The liquid collides with the inner wall of the centrifugal barrel 7 when flowing. Because the liquid is easy to break up, while hitting the wall, it will produce finer droplets that flow in the direction away from the inner wall of the centrifugal barrel 7. During the flow, it is blocked by the baffle 10, so that the liquid collides with the baffle 10 and flows toward the edge of the centrifugal barrel 7, passes through the through groove 701 and is collected, so as to achieve rapid collection of the liquid while avoiding the liquid from colliding with the interior of the centrifugal barrel 7 again to produce smaller droplets.

[0041] Preferably, the inclination direction of the baffle 10 is opposite to the flow direction of the gas-liquid mixture entering the centrifugal barrel 7 .

[0042] See also Figure 3 The centrifugal barrel 7 is provided with a water suction cylinder 3 on its outer shell, and the inner wall of the water suction cylinder 3 abuts against the outer wall of the centrifugal barrel 7 .

[0043] The water absorption tube 3 is made of sponge material. Sponge is a common water-absorbing material. It has a strong water absorption capacity and can quickly absorb water. The principle of sponge water absorption is mainly due to its porous structure and the influence of capillary action. In the process of absorbing water, the sponge can quickly absorb water and keep it inside. The porous structure of the sponge is the key to its water absorption. The surface of the sponge is full of tiny holes, which can quickly absorb water. When the sponge contacts water, the water will enter the holes inside the sponge through capillary action and fill the entire internal space of the sponge. Since the sponge has a large number of holes, it can absorb a large amount of water, so that the sponge has a strong water absorption capacity.

[0044] Furthermore, under the action of the baffle 10, the reflected droplets will pass through the through groove 701. Once they come into contact with the water absorption cylinder 3, due to its sponge water absorption characteristics, they can be quickly absorbed by the sponge and avoid the liquid colliding again to produce smaller droplets. Under the action of gravity, the absorbed water will gather at the bottom of the water absorption cylinder 3. Due to the porous structure of the sponge, impurities in the liquid can be entangled in the sponge. The water absorption cylinder 3 not only plays a role in rapid collection, but also can effectively remove impurities in the liquid. However, sponges are generally made of wood fibers, and after long-term use, the impurities remaining in the holes may affect the collection of the liquid. Therefore, the water absorption cylinder 3 needs to be replaced regularly.

[0045] See also Figure 4 , Figure 5 , Figure 7 The rotating shaft of the baffle 10 is connected to the adjusting member arranged in the separation tank 1, and the adjusting member includes an annular member 5 rotatably installed in the separation tank 1, and the annular member 5 has latch teeth distributed along the circumference, and the latch teeth are engaged with the gear 9 arranged on the rotating shaft.

[0046] It should be noted that a cover plate 4 is detachably mounted on the separation tank 1, and a drive shaft 6 is rotatably mounted on the cover plate 4. The drive shaft 6 is arranged along the axial direction of the ring member 5. By rotating the drive shaft 6, the ring member 5 can be driven to rotate synchronously to achieve the rotation requirement of the ring member 5.

[0047] When the gas-liquid mixture is separated, the faster the flow rate into the centrifugal barrel 7, the greater its inertia, that is, the greater the tendency of gas-liquid separation, resulting in an increase in the collision force between the liquid and the centrifugal barrel 7 after the liquid and the gas are separated, and the number of liquid droplets is increased. Among them, the inclination angle between the baffle 10 and the centrifugal barrel 7 can be changed to prevent the liquid from colliding with the centrifugal barrel 7 when the flow rate is high to produce more droplets.

[0048] Among them, when the driving shaft 6 is controlled to rotate, there are restrictions on the angle and direction of rotation of the driving shaft 6, because the inclination direction of the baffle 10 must always be opposite to the flow direction of the gas-liquid mixture entering the centrifugal barrel 7. In order to avoid the inaccurate rotation angle of the driving shaft 6 during manual control, a driving member is fixedly installed on the cover plate 4. The driving member can be a motor, which drives the reducer to work and rotate through the set motor. The reducer is connected to the driving shaft 6, and the motor is connected to a control unit. The control unit controls the motor to stop automatically after rotating a certain angle. When the motor needs to rotate for the second time, it is necessary to control the control unit again. The control unit includes but is not limited to a control button and an integrated circuit board installed on the mounting seat cover plate 4. The way of controlling the motor belongs to conventional design, and the present invention does not make specific limitations on this.

[0049] See also Figure 2 The separation tank 1 is provided with an air outlet pipe 102 and a water outlet pipe 103 , and the water outlet pipe 103 is communicated with the negative pressure device 2 fixedly mounted on the mounting frame 8 .

[0050] Specifically, after the gas and liquid are separated, the negative pressure device 2 is controlled to work, and the negative pressure device 2 generates suction in the separation tank 1, so that negative pressure is generated in the separation tank 1, and the water absorption cylinder 3 is pressurized to discharge the liquid, and the liquid flows out through the water outlet pipe 103. The sponge is pressurized to discharge its own liquid, and when released, it will return to its original shape and absorb the original water at the same time. As for water, on the one hand, it is subject to atmospheric pressure, and on the other hand, it has its own water pressure. The high pressure will be balanced to the low pressure. At this time, the pressure of the sponge cotton on the surrounding area is relatively small, so water will enter the sponge.

[0051] A gas-liquid separation method, using any one of the above gas-liquid separators, comprises the following steps:

[0052] Step 1: transporting the gas-liquid mixture to be separated into the centrifugal barrel 7 along the inlet pipe 101;

[0053] Step 2: The gas-liquid mixture enters the centrifugal barrel 7, generates centrifugal motion in the centrifugal barrel 7, and the gas-liquid mixture collides with the inner wall of the centrifugal barrel 7. Under the action of gravity, the gas moves upward and the liquid moves downward;

[0054] Step three: after the liquid collides with the centrifugal bucket 7, it rebounds toward the middle of the centrifugal bucket 7. Under the action of the blocking unit, the rebounded liquid passes through the edge of the centrifugal bucket 7 and is collected to avoid the liquid being mixed when the gas is separated.

[0055] In general, the gas-liquid mixture enters the centrifugal barrel 7 along the tangential direction of the centrifugal barrel 7. Since the centrifugal forces exerted on the liquid and the gas are different, the liquid tends to be centrifugally separated. The liquid rotates along the inside of the centrifugal barrel 7. When flowing, the liquid collides with the inside of the centrifugal barrel 7 and is easily broken up, producing finer droplets that flow in a direction away from the inner wall of the centrifugal barrel 7. Under the action of the blocking unit, the liquid collides with the baffle 10 and flows toward the edge of the centrifugal barrel 7, passes through the through groove 701, and is absorbed by the water suction cylinder 3 and then collected, thereby preventing the droplets from returning to the gas phase, so as to improve the gas-liquid separation efficiency. The drive shaft 6 can be started to rotate by a motor, so as to control the baffle 10 to be deflected relative to the inside of the centrifugal barrel 7. The inclination direction of the baffle 10 must always be opposite to the flow direction of the gas-liquid mixture entering the centrifugal barrel 7, so as to prevent the liquid from colliding with the centrifugal barrel 7 when the flow rate is high to produce more droplets.

[0056] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0057] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A gas-liquid separator, comprising a mounting frame (8) and a separation tank (1) fixedly mounted on the mounting frame (8), wherein a centrifugal bucket (7) is arranged inside the separation tank (1), characterized in that ； It also comprises an inlet pipe (101) arranged on the separation tank (1), wherein the inlet pipe (101) is connected to the inner side of the centrifugal bucket (7) and enters the centrifugal bucket (7) along a tangential direction; A blocking unit is arranged inside the centrifugal barrel (7), and the gas-liquid mixture enters the centrifugal barrel (7) along the inlet pipe (101) and collides and flows in the reverse direction. Under the action of the blocking unit, the rebounded liquid passes through the edge of the centrifugal barrel (7) and is collected; The centrifugal barrel (7) is provided with a plurality of through grooves (701) arranged in a threaded shape; The blocking unit comprises a plurality of groups of baffles (10) rotatably mounted in the through slots (701), and the baffles (10) are designed to be inclined in the centrifugal barrel (7); The inclination direction of the baffle (10) is opposite to the flow direction of the gas-liquid mixture entering the centrifugal barrel (7); The centrifugal barrel (7) is provided with a water suction cylinder (3) on its outer shell, and the inner wall of the water suction cylinder (3) abuts against the outer wall of the centrifugal barrel (7); The rotating shaft of the baffle (10) is connected to an adjusting member arranged in the separation tank (1), and the adjusting member comprises an annular member (5) rotatably mounted in the separation tank (1), and the annular member (5) is provided with latch teeth distributed along the circumference, and the latch teeth are meshed with gears (9) arranged on the rotating shaft.

2. A gas-liquid separator according to claim 1, characterized in that: The separation tank (1) is provided with an air outlet pipe (102) and a water outlet pipe (103), and the water outlet pipe (103) is in communication with a negative pressure device (2) fixedly mounted on the mounting frame (8).

3. A gas-liquid separation method, characterized in that: The gas-liquid separator according to any one of claims 1 to 2 comprises the following steps: Step 1: transporting the gas-liquid mixture to be separated into the centrifugal barrel (7) along the inlet pipe (101); Step 2: The gas-liquid mixture enters the centrifugal barrel (7), generates centrifugal motion in the centrifugal barrel (7), and the gas-liquid mixture collides with the inner wall of the centrifugal barrel (7). Under the action of gravity, the gas moves upward and the liquid moves downward; Step three: After the liquid collides with the centrifugal barrel (7), it rebounds toward the middle of the centrifugal barrel (7). Under the action of the blocking unit, the rebounded liquid passes through the edge of the centrifugal barrel (7) and is collected, thereby preventing the liquid from being mixed when the gas is separated.

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