Oil-gas-water three-phase separation device based on combination of various efficient internals

Abstract

The utility model discloses an oil-gas-water three-phase separation device based on combination of various efficient internals, which comprises an oil-water separator, and the front end of the oil-water separator is connected with a gas-liquid cyclone separator; an oil-water rotational flow pre-separator, a baffling type coalescence filler module, a honeycomb inclined tube filler module and an overflow partition plate are sequentially arranged in the oil-water separator along the flowing direction of materials; a first oil-water rapid separation module is arranged above the oil-water cyclone preseparator; a second oil-water rapid separation module is arranged above the honeycomb inclined tube filler module, and a water phase outlet is formed below the honeycomb inclined tube filler module; an oil chamber is formed on one side, far away from the oil-water cyclone pre-separator, of the overflow partition plate, an oil phase outlet is formed in the bottom of the oil chamber, and a gas phase outlet is formed above the oil chamber. The oil-gas-water three-phase separation device fully utilizes centrifugal separation and coarse graining coalescence separation principles to quickly separate oil-gas-water three-phase substances in produced liquid, and has the advantages of high separation efficiency, small occupied space and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of oil, gas and water three-phase separation, in particular to an oil, gas and water three-phase separation device based on a combination of multiple high-efficiency internal parts. Background Art

[0002] In the field of oil, gas and water three-phase separation technology, conventional processes mainly use the coarse-grained agglomeration of fillers to achieve oil, gas and water three-phase separation, but conventional processes have problems such as low separation efficiency, long hydraulic retention time, and large space occupation. Therefore, based on the shortcomings of the existing conventional processes for oil, gas and water three-phase separation, it is necessary to develop a new type of oil, gas and water three-phase separation device that is efficient, occupies a small space, and is easy to maintain. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an oil-gas-water three-phase separation device based on a combination of multiple high-efficiency internal parts.

[0004] The present application is implemented by adopting the following technical solutions.

[0005] An oil-gas-water three-phase separation device based on a combination of multiple high-efficiency internal parts comprises an oil-water separator, and a gas-liquid cyclone separator is connected to the front end of the oil-water separator; an oil-water cyclone pre-separator, a baffled coalescing filler module, a honeycomb oblique tube filler module and an overflow baffle are sequentially arranged in the oil-water separator along the flow direction of the material; a first oil-water rapid separation module is arranged above the oil-water cyclone pre-separator; a second oil-water rapid separation module is arranged above the honeycomb oblique tube filler module, and a water phase outlet is arranged below the honeycomb oblique tube filler module; an oil chamber is formed on the overflow baffle away from the oil-water cyclone pre-separator, an oil phase outlet is arranged at the bottom of the oil chamber, and a gas phase outlet is arranged above the oil chamber.

[0006] By adopting the above technical solution, the produced liquid is first degassed by the gas-liquid cyclone separator and then enters the oil-water separator for oil-water separation; in the oil-water separator tank, the liquid phase flows through the oil-water cyclone pre-separation and then passes through the fast separation module, the baffled coalescing packing module, and the honeycomb inclined tube packing module for fine separation, and finally forms qualified crude oil and purified water. In this process, the gas separated by the gas-liquid cyclone separator and the gas separated by the oil-water separator are transported to the downstream process after the droplets are removed by the blade mist collector.

[0007] Furthermore, the gas-liquid cyclone separator includes a gas-liquid pre-separation pipeline, which is connected to the tubular separator. The upper end of the tubular separator is connected to the upper part of the oil-water separator through a gas phase pipeline, and the middle and lower parts of the tubular separator are connected to the oil-water cyclone pre-separator through a pipeline.

[0008] Furthermore, the gas-liquid pre-separation pipeline includes a vertical pipe and a downward inclined tangential pipe, the lower end of the vertical pipe forms a total inlet, the upper end of the vertical pipe is connected to the downward inclined tangential pipe, and the remaining end of the downward inclined tangential pipe is connected to the middle of the tubular separator.

[0009] Furthermore, the oil-water cyclone pre-separator includes a pre-separator tank body, in which an upper sealing plate, multiple cyclone core tubes and a lower sealing plate are arranged from top to bottom; an oil outlet is formed at the upper end of the pre-separator tank body, a water outlet is formed at the lower end, and a liquid inlet is formed on one side.

[0010] Furthermore, the oil-water cyclone pre-separators are provided in a plurality of groups, and the plurality of groups of oil-water cyclone pre-separators are arranged in parallel.

[0011] Furthermore, a partition is provided between one side of the lower part of the oil-water cyclone pre-separator and the side wall of the oil-water separator, and a steady flow orifice is provided between the other side of the lower part of the oil-water cyclone pre-separator 5 and the bottom wall of the oil-water separator. The steady flow orifice and the partition form a relatively closed space.

[0012] Furthermore, the flow stabilizing orifice plate has holes evenly distributed.

[0013] Furthermore, a second vortex-breaking plate is provided on the upper portion of the oil phase outlet.

[0014] Furthermore, a blade-type mist collector is provided at the gas phase outlet.

[0015] Furthermore, a first vortex-breaking plate is provided on the upper portion of the water phase outlet.

[0016] This application has the following beneficial effects.

[0017] The utility model oil-gas-water three-phase separation device has the functions of degassing, dehydrating oil, and removing oil from water. It uses the dual effects of centrifugal separation and coarse granulation agglomeration to improve the oil-gas-water three-phase separation efficiency. On the premise of ensuring the three-phase separation efficiency, it effectively reduces the volume of the device and reduces the footprint of the device. The utility model device has no moving parts, is simple and reliable, and has strong practicality. It can be used in oil and gas plants and offshore oil production platforms with high requirements for oil and gas processing efficiency and limited processing sites. It can also be used in renovation projects to improve the efficiency of old equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the oil-water cyclone pre-separator of the utility model.

[0020] Figure 3 It is an axial view of the oil-water cyclone pre-separator of the utility model.

[0021] Figure 4 It is a front view of the flow stabilizing orifice plate of the utility model.

[0022] Among them, 1. total inlet; 2. tubular separator; 3. liquid phase pipeline; 4. partition; 5. oil-water cyclone pre-separator; 6. steady flow orifice plate; 7. baffled coalescing packing module; 8. honeycomb inclined tube packing module; 9. packing support frame; 10. first vortex breaking plate; 11. water phase outlet; 12. overflow partition; 13. oil chamber; 14. second vortex breaking plate; 15. oil phase outlet; 16. gas phase outlet; 17. blade type mist collector; 18. Second oil-water rapid separation module; 19. First oil-water rapid separation module; 20. Horizontal tank body; 21. Gas phase pipeline; 22. Oil-water separator; 23. Diversion pipeline; 24. Gas-liquid pre-separation pipeline; 25. Gas-liquid cyclone separator; 5-1. Liquid inlet; 5-2. Pre-separator tank body; 5-3. Oil outlet; 5-4. Upper sealing plate; 5-5. Cyclone core tube; 5-6. Lower sealing plate; 5-7. Water outlet. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments. Unless otherwise specified, the devices, components, etc. used in this application are all commercially available products.

[0024] like Figure 1-4 As shown, an oil-gas-water three-phase separation device based on a combination of multiple high-efficiency internal parts includes a total inlet 1, a water phase outlet 11, an oil phase outlet 15, a gas phase outlet 16, a gas-liquid cyclone separator 25 and an oil-water separator 22.

[0025] The gas-liquid cyclone separator 25 is composed of a total inlet 1, a gas-liquid pre-separation pipeline 24, a tubular separator 2, a gas phase pipeline 21 and a liquid phase pipeline 3. The gas-liquid pre-separation pipeline 24 is composed of a vertical pipe and a downward inclined tangential pipe, the total inlet 1 is located at the lower end of the vertical pipe, the upper end of the vertical pipe is connected to the downward inclined tangential pipe, the free end of the downward inclined tangential pipe is connected to the middle of the tubular separator 2, the upper end of the tubular separator 2 is connected to the upper part of the oil-water separator 22 through the gas phase pipeline 21, and the middle and lower part of the tubular separator 2 is connected to the oil-water separator 22 through the liquid phase pipeline 3.

[0026] The oil-water separator 22 is composed of a diversion pipeline 23, a horizontal tank body 20, a water phase outlet 11, an oil phase outlet 15, and a gas phase outlet 16. The horizontal tank body 20 is provided with an oil-water cyclone pre-separator 5, a baffled coalescing packing module 7, a honeycomb inclined tube packing module 8, a blade mist collector 17, a first oil-water rapid separation module 19, and a second oil-water rapid separation module 18.

[0027] Specifically, the oil-water cyclone pre-separator 5 is arranged on one side of the horizontal tank 20. The oil-water cyclone pre-separator 5 includes a pre-separator tank 5-2, one side of which forms a liquid inlet 5-1, the liquid inlet 5-1 is connected to the shunt pipe 23, and the shunt pipe 23 is connected to the liquid phase pipeline 3. Figure 3 As shown, the oil-water cyclone pre-separator 5 can be provided with several groups, and the several groups of oil-water cyclone pre-separators 5 are arranged in parallel, and the liquid inlets 5-1 of the several groups of oil-water cyclone pre-separators 5 are all connected to the same diversion pipeline 23 for evenly distributing the flow. The interior of the pre-separator tank 5-2 is provided with an upper sealing plate 5-4, a plurality of cyclone core tubes 5-5, and a lower sealing plate 5-6 from top to bottom. The oil phase liquid obtained after treatment by the plurality of cyclone core tubes 5-5 is discharged through the oil outlet 5-3 at the top of the pre-separator tank 5-2, and the water phase liquid obtained after treatment is discharged through the water outlet 5-7 at the bottom of the pre-separator tank 5-2.

[0028] A partition plate 4 is provided between one side of the lower part of the oil-water cyclone pre-separator 5 and the side wall of the horizontal tank body 20, and a flow stabilizing orifice plate 6 is provided between the other side of the lower part of the oil-water cyclone pre-separator 5 and the bottom wall of the horizontal tank body 20. The flow stabilizing orifice plate 6 is opened in a uniformly distributed manner. The flow stabilizing orifice plate 6 and the partition plate 4 form a relatively closed space, and the water phase liquid pre-separated by the oil-water cyclone pre-separator 5 enters the relatively closed space through the water outlet 5-7, and is finally discharged from the flow stabilizing orifice plate 6, so as to achieve the purpose of stable outflow.

[0029] An overflow baffle 12 is provided on the side of the horizontal tank body 20 away from the oil-water cyclone pre-separator 5, and an oil chamber 13 is formed on the side of the overflow baffle 12 away from the oil-water cyclone pre-separator 5. An oil phase outlet 15 is provided at the bottom of the oil chamber 13, and a second vortex-breaking plate 14 is provided on the upper part of the oil phase outlet 15. A gas phase outlet 16 is provided on the top wall of the horizontal tank body 20 above the oil chamber 13, and a blade-type mist collector 17 is also provided at the gas phase outlet 16.

[0030] The baffle-type coalescing packing module 7, the honeycomb oblique tube packing module 8, the first oil-water rapid separation module 19, and the second oil-water rapid separation module 18 are arranged between the oil-water cyclone pre-separator 5 and the overflow baffle 12. Specifically, the honeycomb oblique tube packing module 8 is arranged adjacent to the overflow baffle 12, and a packing support frame 9 is arranged at the bottom of the honeycomb oblique tube packing module 8, and a water phase outlet 11 is arranged below the packing support frame 9, and a first vortex-breaking plate 10 is arranged above the water phase outlet 11. A second oil-water rapid separation module 18 is arranged above the honeycomb oblique tube packing module 8. A baffle-type coalescing packing module 7 is arranged between the oil-water cyclone pre-separator 5 and the honeycomb oblique tube packing module 8. The first oil-water rapid separation module 19 is located above the oil outlet 5-3 of the oil-water cyclone pre-separator 5.

[0031] The operation process of the utility model is as follows:

[0032] ① The produced liquid enters the tubular separator 2 of the gas-liquid cyclone separator 25 tangentially from the main inlet 1 through the gas-liquid pre-separation pipeline 24. After cyclone separation, the gas phase flow and the liquid phase flow enter the oil-water separator 22 through the gas phase pipeline 21 and the liquid phase pipeline 3 respectively. ② In the horizontal tank 20 of the oil-water separator 22, the liquid phase flow enters the oil-water cyclone pre-separator 5 through the diversion pipeline 23 for rough oil-water separation, and the separated oil phase liquid flow and water phase liquid flow are discharged from the oil outlet 5-3 and the water outlet 5-7 respectively. ③ The oil phase liquid flow discharged from the oil outlet 5-3 enters the first oil-water rapid separation module 19, the baffled coalescing packing module 7, and the second oil-water rapid separation module 18 in sequence, and is finally discharged from the oil phase outlet 15 through the oil chamber 13 and the second vortex plate 14. ④ The water phase liquid flow discharged through the water outlet 5-7 enters the baffled coalescing packing module 7 and the honeycomb inclined tube packing module 8 in turn, and finally is discharged from the water phase outlet 11 through the first vortex breaking plate 10. ⑤ The gas separated by the device is discharged from the gas phase outlet 16 through the blade type mist collector 17.

[0033] The utility model is provided with a gas-liquid cyclone separator 25 at the front end of the main separator (oil-water separator) for rapid gas-liquid separation and reducing the influence of gas phase flow on liquid-liquid separation; a gas-liquid pre-separation pipeline 24 is provided at the inlet end of the gas-liquid cyclone separator, which is composed of a vertical pipe and a downward inclined tangential pipe, which is conducive to the pre-separation of gas-liquid two-phase flow; an oil-water cyclone pre-separator 5 is provided at the inlet of the oil-water separator for rough separation of oil and water phases and reducing the processing load of the rear separation module; in the upper space of the oil outlet of the oil-water cyclone pre-separator 5, a gas-liquid pre-separation pipeline 24 is provided, which is composed of a vertical pipe and a downward inclined tangential pipe, which is conducive to the pre-separation of gas-liquid two-phase flow ... A first oil-water rapid separation module 19 is provided, which is beneficial to reducing the water content of the oil phase; a steady flow orifice plate 6 is provided at the water outlet of the oil-water cyclone pre-separator 5, which is beneficial to the uniform outflow of the liquid phase without the generation of vortices; the liquid phase flows into the baffle-type coalescing filler module 7 and the honeycomb inclined tube filler module 8, and the fine separation of oil and water is achieved by utilizing the principles of collision coalescing and wetting coalescing; the oil phase liquid separated by the baffle-type coalescing filler module 7 and the honeycomb inclined tube filler module 8 enters the second oil-water rapid separation module 18, and the water content in the oil is further removed.

[0034] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An oil-gas-water three-phase separation device based on a combination of multiple high-efficiency internal components, comprising an oil-water separator (22), characterized in that: A gas-liquid cyclone separator (25) is connected to the front end of the oil-water separator (22); an oil-water cyclone pre-separator (5), a baffled coalescing filler module (7), a honeycomb inclined tube filler module (8) and an overflow baffle (12) are sequentially arranged in the oil-water separator (22) along the flow direction of the material; a first oil-water rapid separation module (19) is arranged above the oil-water cyclone pre-separator (5); a second oil-water rapid separation module (18) is arranged above the honeycomb inclined tube filler module (8), and a water phase outlet (11) is arranged below the honeycomb inclined tube filler module (8); an oil chamber (13) is formed on the side of the overflow baffle (12) away from the oil-water cyclone pre-separator (5); an oil phase outlet (15) is arranged at the bottom of the oil chamber (13), and a gas phase outlet (16) is arranged above the oil chamber (13).

2. The oil-gas-water three-phase separation device based on a combination of multiple high-efficiency internals according to claim 1, characterized in that: The gas-liquid cyclone separator (25) comprises a gas-liquid pre-separation pipeline (24), the gas-liquid pre-separation pipeline (24) is connected to the tubular separator (2), the upper end of the tubular separator (2) is connected to the upper part of the oil-water separator (22) via a gas phase pipeline (21), and the middle and lower part of the tubular separator (2) is connected to the oil-water cyclone pre-separator (5) via a pipeline.

3. The oil-gas-water three-phase separation device based on a combination of multiple high-efficiency internals according to claim 2 is characterized in that: The gas-liquid pre-separation pipeline (24) comprises a vertical pipe and a downward inclined tangential pipe, the lower end of the vertical pipe forms a main inlet (1), the upper end of the vertical pipe is connected to the downward inclined tangential pipe, and the remaining end of the downward inclined tangential pipe is connected to the middle of the tubular separator (2).

4. The oil-gas-water three-phase separation device based on a combination of multiple high-efficiency internals according to claim 1 is characterized in that: The oil-water cyclone pre-separator (5) comprises a pre-separator tank body (5-2), wherein an upper sealing plate (5-4), a plurality of cyclone core tubes (5-5) and a lower sealing plate (5-6) are sequentially arranged in the pre-separator tank body (5-2) from top to bottom; an oil outlet (5-3) is formed at the upper end of the pre-separator tank body (5-2), a water outlet (5-7) is formed at the lower end, and a liquid inlet (5-1) is formed at one side.

5. The oil-gas-water three-phase separation device based on a combination of multiple high-efficiency internals according to claim 1, characterized in that: The oil-water cyclone pre-separators (5) are provided in a plurality of groups, and the plurality of groups of oil-water cyclone pre-separators (5) are arranged in parallel.

6. The oil-gas-water three-phase separation device based on a combination of multiple high-efficiency internals according to claim 1, characterized in that: A partition plate (4) is provided between one side of the lower portion of the oil-water cyclone pre-separator (5) and the side wall of the oil-water separator (22), and a flow stabilizing orifice plate (6) is provided between the other side of the lower portion of the oil-water cyclone pre-separator (5) and the bottom wall of the oil-water separator (22). The flow stabilizing orifice plate (6) and the partition plate (4) form a relatively closed space.

7. The oil-gas-water three-phase separation device based on a combination of multiple high-efficiency internals according to claim 6, characterized in that: The flow stabilizing orifice plate (6) has holes opened in a uniformly distributed manner.

8. The oil-gas-water three-phase separation device based on a combination of multiple high-efficiency internals according to claim 1, characterized in that: A second vortex-breaking plate (14) is provided at the upper portion of the oil phase outlet (15).

9. The oil-gas-water three-phase separation device based on a combination of multiple high-efficiency internals according to claim 1, characterized in that: A blade-type mist collector (17) is provided at the gas phase outlet (16).

10. The oil-gas-water three-phase separation device based on a combination of multiple high-efficiency internals according to claim 1, characterized in that: A first vortex-breaking plate (10) is provided at the upper portion of the water phase outlet (11).

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