Feeding gas-liquid cyclone defoaming device for oil-gas separator
By setting a gas-liquid cyclone demister and an isolation net at a specific angle in the separator, the problem of foam blowing in the existing device is solved, and the initial gas-liquid separation effect is improved.
Patent Information
- Application Number
- CN202422756669.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-13
AI Technical Summary
The defoaming effect of the existing gas-liquid cyclone defoaming device is not ideal, and foam is easily blown out from the upper end of the cyclone cylinder of the defoaming device, resulting in a decrease in the defoaming effect.
Multiple gas-liquid cyclone demisters are installed in the separator shell. The cyclone cylinder of the demister is welded to the feed pipe at a specific angle, and the lower part is immersed below the gas-liquid dividing line. The demister isolation net is combined to reduce the kinetic energy of the medium and utilize the surface tension of the medium to achieve gas-liquid separation.
It achieves good initial separation effect of gas and liquid, reduces foam generation, has a simple structure, and avoids foam being carried out from the top air outlet.
Smart Images
Figure CN223393109U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a defoaming device for an oil-gas separator, in particular to a feed gas-liquid cyclone defoaming device for an oil-gas separator. Background Art
[0002] The defoaming effect of the existing gas-liquid cyclone defoaming device is not ideal. Foam will always be blown out from the upper end of the cyclone cylinder of the defoaming device, and additional defoaming agents must be added before subsequent production operations can be carried out. The main reasons are as follows:
[0003] 1. After the medium enters the cyclone of the defoaming device, it rotates at high speed. Due to the high rotation speed and slow gravity drop speed, it is easy to collide with the medium entering the inlet during rotation and generate foam;
[0004] 2. When the medium rotates and sinks, due to the high speed, the kinetic energy when it enters the bottom liquid surface is large, which will produce more foam;
[0005] 3. When the medium liquid rotates, it drives the gas in the center to rotate rapidly, and drives the lighter foam generated at the bottom to be carried out from the top outlet like being rolled up by a typhoon, thereby reducing the defoaming effect.
[0006] In order to overcome the above-mentioned defects, the present invention has made beneficial improvements. Utility Model Content
[0007] The purpose of the utility model is to solve the above-mentioned deficiencies in the prior art and to provide a feed gas-liquid cyclone defoaming device for an oil-gas separator.
[0008] In order to achieve the above purpose, the utility model adopts the following technical means:
[0009] A feed gas-liquid cyclone defoamer for an oil-gas separator. The device is disposed within the separator housing and is unique in that it comprises multiple gas-liquid cyclone defoamers, each of which is secured to the separator housing via a defoamer mounting platform and a defoamer platform support frame by welding or bolting. The lower portion of each gas-liquid cyclone defoamer is submerged below the gas-liquid boundary of the separator housing. Furthermore, the multiple gas-liquid cyclone defoamers are welded to both sides of a separator medium inlet manifold and communicate with the separator medium inlet manifold. One end of the separator medium inlet manifold is sealed, and the other end communicates with the separator medium inlet.
[0010] Furthermore: the gas-liquid cyclone demister includes a demister cyclone tube, a demister feed pipe and a demister isolation net, the demister cyclone tube and the demister feed pipe are respectively a pipe section with openings at both ends, one end of the demister feed pipe is tangentially connected to the demister cyclone tube and welded together, and the angle between the center line of the demister feed pipe and the center line of the demister cyclone tube is greater than or equal to 93 degrees and less than or equal to 100 degrees;
[0011] Furthermore: the other end of the demister feed pipe serves as the medium inlet of the gas-liquid cyclone demister and is connected to the separator medium inlet manifold;
[0012] Furthermore, the lower end of the demister cyclone is coaxially fixed and aligned with the demister isolation net through the demister isolation net fixing support, and is in communication with the liquid phase of the separator, and the upper end of the demister cyclone is open and is in communication with the gas phase of the separator;
[0013] Furthermore: the demister isolation net can be a roll with a number of holes evenly arranged, or it can be a 30-mesh steel wire mesh, so that when the liquid descends along the inner wall of the demister cyclone and enters the gap between the demister isolation net and the demister cyclone, the kinetic energy of the entering water is minimized under the action of the surface tension of the medium, thereby reducing the generation of foam.
[0014] The beneficial effects of the utility model are as follows: the utility model is used in a gas-liquid separation device mainly based on liquid to achieve preliminary gas-liquid separation, has a simple structure, good preliminary gas-liquid separation effect, and does not generate foam. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic structural diagram of a feed gas-liquid cyclone defoaming device for an oil-gas separator according to an embodiment of the present utility model;
[0016] Figure 2 yes Figure 1 BB view in the figure;
[0017] Figure 3 yes Figure 1 AA view in .
[0018] Figure 1: 1. Separator housing; 2. Separator medium inlet; 3. Separator medium inlet manifold; 4. Gas-liquid cyclone defoamer; 5. Gas-liquid dividing line; 6. Defoamer feed pipe; 7. Defoamer cyclone cylinder; 8. Defoamer isolation net; 9. Defoamer isolation net fixing support; 10. Defoamer mounting platform; 11. Defoamer platform support frame. DETAILED DESCRIPTION
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] Reference to the embodiments of the present invention Figure 1 As shown, a feed gas-liquid cyclone defoamer for an oil-gas separator is provided inside a separator housing 1 and includes a plurality of gas-liquid cyclone demisters 4. Each gas-liquid cyclone demister 4 is fixed to the interior of the separator housing 1 by welding or bolting via a demister mounting platform 10 and a demister platform support frame 11, with the lower portion of the gas-liquid cyclone demister 4 submerged below the gas-liquid dividing line 5 of the separator housing 1. Furthermore, the plurality of gas-liquid cyclone demisters 4 are welded to both sides of a separator medium inlet manifold 3 and communicate with the separator medium inlet manifold 3. One end of the separator medium inlet manifold 3 is closed, and the other end is communicated with the separator medium inlet 2.
[0021] Each of the gas-liquid cyclone demisters 4 includes a demister cyclone tube 7, a demister feed pipe 6 and a demister isolation net 8. The cyclone tube 7 and the demister feed pipe 6 of the demister gas-liquid cyclone demister 4 are respectively a section of pipe with openings at both ends of different sizes. One end of the demister feed pipe 6 is tangentially connected to the demister cyclone tube 7 and welded together. The angle between the center line of the demister feed pipe 6 and the center line of the demister cyclone tube 7 is greater than or equal to 93 degrees and less than or equal to 100 degrees, so that when the medium enters the demister cyclone tube 7 and rotates, the liquids will not collide with each other when generating a descending spiral.
[0022] The other end of the demister feed pipe 6 serves as the gas-liquid cyclone demister 4 and the medium inlet, and is connected to the separator medium inlet manifold 3.
[0023] The lower end of the demister cyclone 7 and the demister isolation net 8 are coaxially fixed through the demister isolation net fixing support 9 and aligned and installed together, communicating with the liquid phase of the separator; the upper end of the demister cyclone 7 is open, communicating with the gas phase of the separator.
[0024] The demister isolation net 8 is a roll with many uniform holes, or a steel wire mesh of about 30 meshes, so that when the liquid descends along the inner wall of the demister cyclone 7 and enters the gap between the demister isolation net 8 and the demister cyclone 7, the kinetic energy of the entering water is minimized under the action of the surface tension of the medium, thereby reducing the generation of foam.
[0025] This device is primarily used in liquid-based gas-liquid separation devices to achieve preliminary gas-liquid separation. When the medium enters the manifold from the separator inlet and is diverted into the gas-liquid cyclone demister 4, the medium rotates on the inner wall of the cyclone demister 7. Due to the difference in surface tension between the media, the liquid has a high surface tension, resulting in high friction with the inner wall and a rapid drop in velocity. The gas, on the other hand, has a low mass and low surface tension, resulting in low friction with the inner wall and a slow drop in velocity, thus achieving gas-liquid separation.
[0026] The light gas rotates at high speed, enters the center of the cyclone 7 of the demister, and exits through the top opening. The heavier liquid has a greater speed drop, and when it passes through the gap between the demister isolation screen 8 and the cyclone 7, it is decelerated to the maximum extent, achieving gas-liquid separation again and entering the liquid phase of the separator.
[0027] The above embodiment is only one embodiment of the present invention and should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and all such modifications and improvements fall within the scope of protection of the present invention.
Claims
1. A feed gas-liquid cyclone defoaming device for an oil-gas separator, the device being arranged inside the separator housing and characterized in that: The device includes multiple gas-liquid cyclone demisters, each of which is fixed inside the separator shell by welding or bolting a demister mounting platform and a demister platform support frame, and the lower part of the gas-liquid cyclone demister is immersed below the gas-liquid dividing line of the separator shell, and multiple gas-liquid cyclone demisters are welded to both sides of the separator medium inlet manifold and connected to the separator medium inlet manifold, one end of the separator medium inlet manifold is closed, and the other end is connected to the separator medium inlet.
2. The feed gas-liquid cyclone defoaming device for an oil-gas separator according to claim 1, characterized in that: The gas-liquid cyclone demister includes a demister cyclone tube, a demister feed pipe and a demister isolation net. The demister cyclone tube and the demister feed pipe are respectively a section of pipe with openings at both ends. One end of the demister feed pipe is tangentially connected to the demister cyclone tube and welded together, and the angle between the center line of the demister feed pipe and the center line of the demister cyclone tube is greater than or equal to 93 degrees and less than or equal to 100 degrees.
3. The feed gas-liquid cyclone defoaming device for an oil-gas separator according to claim 2, characterized in that: The other end of the demister feed pipe serves as the medium inlet of the gas-liquid cyclone demister and is communicated with the separator medium inlet manifold.
4. The feed gas-liquid cyclone defoaming device for an oil-gas separator according to claim 2, characterized in that: The lower end of the demister cyclone is coaxially fixed and aligned with the demister isolation net through the demister isolation net fixing support and is connected to the liquid phase of the separator. The upper end of the demister cyclone is open and is connected to the gas phase of the separator.
5. The feed gas-liquid cyclone defoaming device for an oil-gas separator according to claim 2, characterized in that: The demister isolation net is a roll evenly provided with a plurality of holes, or a 30-mesh steel wire mesh.
6. The feed gas-liquid cyclone defoaming device for an oil-gas separator according to claim 4, characterized in that: The demister isolation net is a roll evenly provided with a plurality of holes, or a 30-mesh steel wire mesh.