High-efficiency liquid-mist-gas separation device convenient for quickly replacing filler

Abstract

The invention relates to a high-efficiency liquid-mist-gas separation device convenient for quickly replacing a filler, and belongs to the technical field of liquid-gas-mist separation, the high-efficiency liquid-mist-gas separation device comprises an outer cylinder and a cylinder body located at the bottom of the outer cylinder, an inner cylinder is arranged in the middle of an inner cavity of the outer cylinder, an umbrella plate is arranged at the top of the inner cylinder, and small holes are formed in the inner cylinder and the umbrella plate in the circumferential direction; one side of the outer cylinder is provided with a liquid inlet pipe facilitating tangential feeding of liquid, gas and fog, the liquid inlet pipe penetrates through the outer cylinder and extends into the inner cylinder, the top of an inner cavity of the outer cylinder is provided with a sandwich separation structure used for separating gas and fog drops, and the tops and the bottoms of the uppermost layer and the lowermost layer of the sandwich separation structure are provided with an upper pressing plate and a lower pressing plate correspondingly; a liquid accumulation groove is formed in an inner cavity of the barrel, a through hole is formed in the connecting position of the outer barrel and the barrel, liquid gas mist is fed tangentially through the gas inlet and rotates along the wall of the inner barrel through kinetic energy of gas, and liquid flows down along the wall of the inner barrel under the action of centrifugal force and enters the liquid accumulation groove in the bottom. And the remaining gas-mist mixed mist is further separated through a sandwich separation structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid-gas mist separation, and relates to an efficient liquid-mist-gas separation device facilitating rapid packing replacement, in particular to an efficient liquid-mist-gas separation device with built-in rapid packing replacement, which is applicable to fields such as oil and gas separation in natural gas production and steam purification. Background Art

[0002] During the industrial production process, gas often contains liquid-gas mist (i.e., a mixture of liquid vapor and tiny liquid droplets). The presence of these liquid-gas mists will have an adverse impact on equipment operation, gas quality, and subsequent processes. For example, in a compressed air system, liquid-gas mist will cause pipeline corrosion, equipment damage, and product quality degradation.

[0003] A gas-liquid separation device is a device used to separate gas and liquid, which is usually widely used in the oil and gas industry and the chemical field. Its working principle is to guide the gas-liquid mixture into a separation tank, and through the action of gravity, the liquid settles to the bottom, while the gas rises to the top of the tank.

[0004] Currently, common methods for separating liquid-gas mist include gravity separation, centrifugal separation, and filtration separation, etc.; however, these methods have problems such as low separation efficiency, complex equipment, and high maintenance costs. And traditional horizontal separators have problems of large floor area and high requirements for installation space. Conventional vertical separators are prone to liquid flooding phenomenon when dealing with high liquid-gas ratio working conditions, resulting in a decrease in separation efficiency. At the same time, they lack an effective secondary separation structure and are prone to liquid droplet entrainment.

[0005] Therefore, how to reduce the floor area of the equipment, suppress the liquid flooding phenomenon under high liquid-gas ratio working conditions, improve the separation efficiency, reduce secondary entrainment, and improve the purity of the separated gas is a technical problem that those skilled in the art need to solve currently. There is an urgent need for a liquid-mist-gas separation device with a simple and compact structure and high separation efficiency. Summary of the Invention

[0006] In view of this, in order to solve the problems of large floor area, low separation efficiency, and lack of effective secondary separation of traditional separation devices, the present invention provides an efficient liquid-mist-gas separation device facilitating rapid packing replacement.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An efficient liquid-mist-gas separation device that facilitates rapid packing replacement, comprising an outer cylinder and a cylinder body located at the bottom of the outer cylinder. In the middle of the inner cavity of the outer cylinder, an inner cylinder is provided. At the top of the inner cylinder, an umbrella plate is provided, and small holes are circumferentially formed in both the inner cylinder and the umbrella plate. On one side of the outer cylinder, a liquid inlet pipe is provided to facilitate the tangential feeding of liquid, mist, and gas. The liquid inlet pipe penetrates through the outer cylinder and extends into the inner cylinder. At the top of the inner cavity of the outer cylinder, a sandwich separation structure for separating gas and droplets is provided. Upper and lower pressing plates are respectively provided at the top and bottom of the uppermost and lowermost layers of the sandwich separation structure. The inner cavity of the cylinder body forms a liquid accumulation tank, and a through hole is provided at the connection between the outer cylinder and the cylinder body.

[0009] Furthermore, the sandwich separation structure includes an uppermost layer filled with Pall rings, a middle layer installed with wire meshes, and a lowermost layer installed with baffle plates. Beneficial effects: The baffle plates can redistribute the rising gas or liquid, making the fluid more evenly distributed, avoiding phenomena such as fluid deviation and short-circuiting in the tower, thereby improving the separation effect and mass transfer efficiency; at the same time, the presence of the baffle plates can make the fluid stay in the tower for a longer time, providing more sufficient time and space for mass transfer and reaction between fluids, further improving the separation efficiency; when the gas containing droplets passes through the wire mesh, due to the certain flow rate of the gas, the droplets will be deflected towards the direction of the wire mesh under the action of inertia when passing through the wire mesh; after hitting the wire mesh, the droplets fall into the liquid accumulation tank due to the action of gravity, thus realizing the separation of droplets and gas.

[0010] Furthermore, the baffle plates are distributed in strip shapes that are convenient for disassembly and assembly. Beneficial effects: The liquid, mist, and gas fluid with droplets is evenly distributed on the packing layer through a distributor, and then flows through the pore channels and annular channels of the packing; due to the special structures of the baffle plates and Pall ring packings, the fluid forms a swirling flow between the packings, increasing the contact area between the fluid and the packings; during the mass transfer process, due to the property differences between components, the adsorption, desorption, and diffusion rates of different components on the surface of the packings are different, thereby realizing the separation of gas and droplets; the strip-shaped distributed baffle plates have the effect of being convenient for disassembly and assembly.

[0011] Furthermore, a head is provided at the top of the outer shell of the outer cylinder. The inner cavity at the top of the outer cylinder is divided into two parts by the upper pressing plate. A manhole II is installed on the part of the head close to the Pall rings, and an exhaust port and a safety valve port are installed on the other part.

[0012] Furthermore, both the upper pressing plate and the lower pressing plate are perforated plates. Beneficial effects: The gas separated from the liquid, mist, and gas fluid smoothly passes through the perforated plate and is discharged through the exhaust port, and the separated droplets flow into the liquid accumulation tank through the perforated plate.

[0013] Furthermore, a cone cylinder is installed at the top of the inner cylinder, and the umbrella plate is above the cone cylinder.

[0014] Furthermore, the wire mesh is composed of fine metal wires or non-metal fibers. Beneficial effect: The fine wire mesh can effectively intercept the liquid droplets in the gas.

[0015] Furthermore, a pressure gauge is externally connected through the manhole II. Beneficial effect: The pressure inside the device can be monitored.

[0016] Furthermore, a liquid discharge port is installed on one side of the cylinder body, and a slag discharge port is installed at the bottom of the cylinder body. Beneficial effect: The liquid flowing into the liquid accumulation tank is discharged through the liquid discharge port; the solid slag accumulated in the liquid accumulation tank is discharged from the slag discharge port.

[0017] Furthermore, a liquid level gauge port I and a liquid level gauge port II are respectively installed on the side of the outer cylinder opposite to the liquid inlet pipe and on the side of the cylinder body opposite to the liquid discharge port, and the two liquid level gauge ports operate independently. Beneficial effect: The liquid height can be controlled by the two liquid level gauges so that it does not submerge the inner cylinder of the separation device; the independent operation ensures that one can work normally when the other is damaged.

[0018] Furthermore, there is a manhole I installed on the outer cylinder below the liquid level gauge port I, and a thermometer port is installed on the outer cylinder between the manhole I and the liquid level gauge port I. Beneficial effect: Through the manhole I, it is convenient to clean the inside of the inner cylinder and prevent dirt accumulation.

[0019] Furthermore, an elliptical head is provided at the bottom of the cylinder body.

[0020] Furthermore, the cross-sectional area of each layer of holes in the outer cylinder is equal to the cross-sectional area of the air inlet pipeline, and the sum of the areas of the small holes on the umbrella plate is 50 - 100 times that of the air inlet pipeline.

[0021] Furthermore, the inner cylinder is fixed in the middle of the inner cavity of the outer cylinder through a welded pipe.

[0022] Furthermore, feet for supporting the outer cylinder are provided below the outer cylinder.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. For an efficient liquid - mist - gas separation device that is convenient for quickly replacing packing disclosed by the present invention, the liquid, mist, and gas are fed tangentially through the air inlet, and due to the kinetic energy carried by the gas, it rotates along the inner cylinder wall. Under the action of centrifugal force, the liquid flows down along the inner cylinder wall and enters the liquid accumulation tank at the bottom; the remaining mist - gas mixture then rises along the inner cylinder to reach the umbrella plate, and through the coordinated action of the baffle plate, wire mesh, and Pall ring packing in the sandwich separation structure, the separation of gas and droplets is achieved. The wire mesh effectively captures fine droplets, reduces secondary entrainment, and improves the separation efficiency.

[0025] 2. An efficient liquid-mist-gas separation device that facilitates quick replacement of packing. The liquid, mist, and gas enter tangentially through the air inlet, rotate along the inner cylinder wall, and the liquid is separated under the action of centrifugal force. The whole process is similar to pouring liquid, which is not easy to generate foam, reducing the subsequent blockage of the sandwich separation structure by foam, and improving the separation effect and efficiency of gas and liquid. At the same time, small holes are circumferentially arranged on the inner cylinder, slowing down the air flow velocity and improving the anti-flooding ability.

[0026] 3. An efficient liquid-mist-gas separation device that facilitates quick replacement of packing. It adopts a vertical structure, which is compact. Compared with the traditional horizontal separator, it reduces the floor area.

[0027] 4. An efficient liquid-mist-gas separation device that facilitates quick replacement of packing. Through the manhole II provided at the top of the outer cylinder, it is convenient to take out and clean and replace the Pall rings, wire meshes, and baffle plates in the sandwich separation structure layer by layer and piece by piece. The manhole II does not need to be too large, and the overall maintenance cost is low.

[0028] Other advantages, objectives, and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be described in detail preferably with reference to the accompanying drawings, where:

[0030] Figure 1 is a schematic structural diagram of the efficient liquid-mist-gas separation device that facilitates quick replacement of packing of the present invention;

[0031] Figure 2 is a schematic diagram of the umbrella plate in the efficient liquid-mist-gas separation device that facilitates quick replacement of packing of the present invention, where 2a is a top view of the umbrella plate, 2b is a front view of the umbrella plate, and 2c is an isometric view of the umbrella plate;

[0032] Figure 3 is an assembly schematic diagram of the inner cylinder and the conical cylinder in the efficient liquid-mist-gas separation device that facilitates quick replacement of packing of the present invention, where 3a is a top view of the structure after the inner cylinder and the conical cylinder are assembled, 3b is a front view of the structure after the inner cylinder and the conical cylinder are assembled, and 3c is an isometric view of the structure after the inner cylinder and the conical cylinder are assembled.

[0033] Reference numerals: head 1, upper pressing plate 2, Pall ring 3, wire mesh 4, lower pressing plate 5, outer cylinder 6, umbrella plate 7, conical cylinder 8, inner cylinder 9, welded pipe 10, cylinder body 11, elliptical head 12, feet 13, baffle plate 14, air inlet 15, exhaust port 16, pressure gauge 17, safety valve port 18, slag discharge port 19, liquid discharge port 20, handhole I 21, handhole II 22, liquid level gauge port I 23, liquid level gauge port II 24, thermometer port 25. Detailed implementation mode

[0034] The following uses specific specific examples to illustrate the implementation mode of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes. The details in this specification can also be based on different viewpoints and applications, and various modifications or changes can be made without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0035] As Figure 1 shown, a high-efficiency liquid-mist-gas separation device that is convenient for quickly replacing packing includes an outer cylinder 6, a cylinder body 11 located at the bottom of the outer cylinder 6, and feet 13 provided below the outer cylinder 6 for supporting the outer cylinder 6. A through hole is provided at the connection between the outer cylinder 6 and the cylinder body 11. The inner cavity of the cylinder body 11 forms a liquid accumulation tank, which is convenient for the liquid separated from the liquid mist and gas to flow into the liquid accumulation tank.

[0036] An inner cylinder 9 is provided in the middle of the inner cavity of the outer cylinder 6. The inner cylinder 9 is fixed to the outer cylinder 6 through a welded pipe 10. The inner cylinder 9 is designed to be circumferentially provided with evenly distributed small holes. The purpose is that when the liquid overflows the lower edge of the inner cylinder 9, the gas can also be discharged to reach the wire mesh 4 to prevent it from being discharged with the water. The principle is that the total cross-sectional area of each layer of holes is the cross-sectional area of the air inlet 15 pipeline. This structural design slows down the flow velocity of the liquid mist and gas flow, improves the anti-liquid flooding ability. The structure of the inner cylinder 9 is shown in Figure 3 , where 3a, 3b, and 3c are respectively the top view, front view, and isometric view of the structure after the inner cylinder 9 and the conical cylinder 8 are assembled. A conical cylinder 8 is installed at the top of the inner cylinder 9. An umbrella plate 7 is provided on the upper part of the conical cylinder 8. The umbrella plate 7 is also circumferentially provided with small holes, which is convenient for the liquid mist and gas to pass through smoothly and rise to the sandwich separation structure, thereby increasing the purification efficiency. The total area of the small holes on the umbrella plate 7 is 50-100 times that of the air inlet 15 pipeline. The structure of the umbrella plate 7 is shown in Figure 2 , where 2a, 2b, and 2c are respectively the top view, front view, and isometric view of the umbrella plate 7.

[0037] One side of the outer cylinder 6 is provided with a liquid inlet pipe, and the liquid inlet pipe penetrates through the outer cylinder 6 and extends into the inner cylinder 9. The liquid aerosol enters tangentially through the air inlet 15 provided at the end of the liquid inlet pipe. The gas with liquid and fog enters from the air inlet, and the kinetic energy carried by the gas causes it to rotate along the inner wall of the inner cylinder 9. Under the action of centrifugal force, the liquid flows down along the inner wall of the inner cylinder 9 and enters the liquid accumulation tank at the bottom, and then is discharged through the liquid discharge port 20. The liquid aerosol enters tangentially, and it is not easy to generate foam.

[0038] At the top of the inner cavity of the outer cylinder 6, a sandwich separation structure for separating gas and droplets is provided. The sandwich separation structure includes the uppermost layer filled with Pall rings 3, the middle layer installed with wire mesh 4, and the lowermost layer installed with baffle plates 14. Upper pressing plates 2 and lower pressing plates 5 are respectively provided at the top and bottom of the uppermost layer and the lowermost layer, and both the upper pressing plate 2 and the lower pressing plate 5 are designed as perforated plates. At the top of the outer shell of the outer cylinder 6, there is a head 1. The top of the inner cavity of the outer cylinder 6 is divided into two parts by the upper pressing plate 2. On the part of the head 1 close to the Pall rings 3, a manhole II 22 is installed, and on the other part, an exhaust port 16 and a safety valve port 18 are installed. The wire mesh 4 is composed of fine metal wires or non-metallic fibers, and these fine wire meshes 4 can effectively intercept the droplets in the gas. The aerosol mixture remaining after the separation by rotating along the inner wall of the inner cylinder 9 rises along the inner cylinder 9 to reach the umbrella plate 7, and then rises through the umbrella plate 7 to the sandwich separation structure. When the liquid aerosol fluid with droplets passes through the baffle plate 14, the baffle plate 14 can reduce the rising speed of the fluid and reduce the occurrence of flooding. At the same time, it can make the fluid stay in the tower for a longer time and be evenly distributed, improving the separation efficiency; when the gas containing droplets passes through the wire mesh 4, due to the certain flow rate of the gas, the droplets will be deflected in the direction of the wire mesh 4 under the action of inertia when passing through the wire mesh 4; after hitting the wire mesh 4, the droplets fall into the liquid accumulation tank due to the action of gravity, and the remaining pure gas is discharged through the exhaust port 16, thus realizing the separation of droplets and gas.

[0039] When it is necessary to replace or clean the baffle plate 14, the wire mesh 4 and the packing of the Pall rings 3, just open the manhole II 22 and take out the Pall rings 3, the wire mesh 4 and the baffle plate 14 in sequence.

[0040] The manhole II 22 is externally connected with a pressure gauge 17 for monitoring the pressure inside the device; at the same time, for the convenience of observation, the pressure gauge 17 can extend to the middle of the device.

[0041] One side of the cylinder body 11 is provided with a liquid discharge port 20, and the liquid flowing into the liquid accumulation tank is discharged through the liquid discharge port 20. At the bottom of the cylinder body 11, a slag discharge port 19 is installed, and the solid slag accumulated in the liquid accumulation tank is discharged from the slag discharge port 19. An elliptical head 12 is provided at the connection between the cylinder body 11 and the slag discharge pipeline.

[0042] On one side of the outer cylinder 6 opposite to the liquid inlet pipe and on one side of the cylinder body 11 opposite to the liquid discharge port 20, a liquid level gauge port I 23 and a liquid level gauge port II 24 are respectively installed. The two liquid level gauge ports operate independently. The liquid height can be controlled by the two liquid level gauges to prevent the inner cylinder 9 of the separation device from being submerged; the independent operation ensures that when one is damaged, the other can still work properly.

[0043] Below the liquid level gauge port I 23, there is a manhole I 21 installed on the outer cylinder 6. Through the manhole I 21, it is convenient to clean the inside of the inner cylinder 9 to prevent dirt accumulation. A thermometer port 25 is installed on the outer cylinder 6 between the manhole I 21 and the liquid level gauge port I 23.

[0044] When this efficient liquid-mist-gas separation device that is convenient for quickly replacing packing is in use, the gas with liquid and mist enters from the air inlet. The kinetic energy carried by the gas makes it rotate along the wall of the inner cylinder 9. Under the action of centrifugal force, the liquid flows down along the wall of the inner cylinder 9 and enters the liquid accumulation tank at the bottom; the remaining aerosol mixture rises along the inner cylinder 9 and the umbrella plate 7, passes through the lower pressing plate 5 designed as an orifice plate, and is redistributed under the action of the baffle plate 14 to separate the fluid into gas-mist-liquid. When the gas containing liquid droplets passes through the wire mesh 4, due to the certain flow rate of the gas, the liquid droplets will be deflected in the direction of the wire mesh 4 under the action of inertia, and the liquid droplets fall into the liquid accumulation tank under the action of gravity. The remaining pure gas is discharged through the upper pressing plate 2 and the exhaust port 16. During the separation process, the pressure inside the device is monitored by the pressure gauge 17, and the liquid height is controlled through the two liquid level gauge ports to prevent the inner cylinder 9 of the separation device from being submerged.

[0045] The liquid in the liquid accumulation tank is discharged through the liquid discharge port 20, and the solid residues accumulated in the liquid accumulation tank are discharged from the slag discharge port 19.

[0046] After the device has been used for a long time, the manhole I 21 can be opened to clean the inside of the inner cylinder 9 to prevent dirt accumulation. When it is necessary to replace or clean the baffle plate 14, the wire mesh and the Pall ring 3 packing, they can be taken out respectively by opening the manhole II 22.

[0047] For this efficient liquid-mist-gas separation device, when the liquid-aerosol fluid with mist droplets is evenly distributed on the packing layer through the distributor, and then flows through the pore channels and annular channels of the packing; due to the special structure of the Pall ring 3 packing, the fluid forms a swirling flow between the packings, increasing the contact area between the fluid and the packing; during the mass transfer process, due to the property differences between the components, the adsorption, desorption and diffusion rates of different components on the surface of the packing are different, thus realizing the separation of gas and mist droplets.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A high-efficiency liquid-mist-gas separation device that is convenient for rapid replacement of fillers, comprising an outer cylinder and a cylinder body located at the bottom of the outer cylinder, characterized in that: An inner cylinder is arranged in the middle of the inner cavity of the outer cylinder, an umbrella plate is arranged on the top of the inner cylinder, and small holes are opened in the circumference of the inner cylinder and the umbrella plate, a liquid inlet pipe for tangential feeding of liquid, gas and mist is arranged on one side of the outer cylinder, and the liquid inlet pipe passes through the outer cylinder and extends into the inner cylinder, a sandwich separation structure for separating gas and droplets is arranged on the top of the inner cavity of the outer cylinder, an upper pressure plate and a lower pressure plate are arranged on the top and bottom of the uppermost layer and the lowermost layer of the sandwich separation structure respectively, the inner cavity of the cylinder forms a liquid accumulation groove, and a through hole is opened at the connection between the outer cylinder and the cylinder.

2. The high-efficiency liquid-mist-gas separation device for quick replacement of fillers according to claim 1, characterized in that: The sandwich separation structure comprises an uppermost layer filled with ball rings, a middle layer installed with wire meshes, and a lowermost layer installed with baffles.

3. The high-efficiency liquid-mist-gas separation device for quick replacement of fillers according to claim 1, characterized in that: The baffles are distributed in strips for easy assembly and disassembly.

4. The high-efficiency liquid-mist-gas separation device for facilitating rapid replacement of fillers according to any one of claim 3, characterized in that: The top of the outer shell of the outer cylinder is provided with a head, and the top of the inner cavity of the outer cylinder is divided into two parts by an upper pressure plate. The part of the head close to the ball ring is provided with a hand hole II, and the other part is provided with an exhaust port and a safety valve port.

5. The high-efficiency liquid-mist-gas separation device for quick replacement of fillers as claimed in claim 4, characterized in that: The upper pressure plate and the lower pressure plate are both orifice plates; a cone is installed on the top of the inner cylinder, and the umbrella plate is on the upper part of the cone; a pressure gauge is externally connected through the hand hole II.

6. The high-efficiency liquid-mist-gas separation device for quick replacement of fillers according to claim 1, characterized in that: A liquid discharge port is installed on one side of the cylinder, and a slag discharge port is installed at the bottom of the cylinder.

7. The high-efficiency liquid-mist-gas separation device for quick replacement of fillers according to claim 1, characterized in that: A liquid level gauge port I and a liquid level gauge port II are respectively installed on the side of the outer cylinder opposite to the liquid inlet pipe and the side of the cylinder body opposite to the liquid discharge port, and the two liquid level gauge ports operate independently.

8. The high-efficiency liquid-mist-gas separation device for quick replacement of fillers as claimed in claim 7, characterized in that: A hand hole I installed on the outer cylinder is provided below the liquid level gauge port I, and a thermometer port installed on the outer cylinder is provided between the hand hole I and the liquid level gauge port I.

9. The high-efficiency liquid-mist-gas separation device for quick replacement of fillers according to claim 1, characterized in that: The cross-sectional area of ​​each layer of holes in the outer cylinder is equal to the cross-sectional area of ​​the air inlet pipeline, and the total area of ​​the small holes on the umbrella plate is equal to 50-100 times that of the air inlet pipeline.

10. The high-efficiency liquid-mist-gas separation device for quick replacement of fillers according to claim 1, characterized in that: The inner cylinder is fixed to the middle part of the inner cavity of the outer cylinder through a welded pipe.

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