Rotary electric field enhanced crude oil three-phase separator

Abstract

The utility model relates to a kind of rotating electric field enhanced crude oil three-phase separators, belong to oilfield equipment field, comprising: degassing tower and electric field dehydration tank;Degassing tower is equipped with demisting packing;Electric field dehydration tank is equipped with electric field component and coalescence packing in sequence;Electric field component includes three stainless steel electrodes, three stainless steel electrodes are deeply into electric field dehydration tank and with external three-phase autotransformer electric connection, to produce rotating electric field in the area of coalescence packing;Rotating electric field is used to induce molecular dipole moment to promote oil-water separation;Wherein, the liquid outlet of degassing tower is connected with the liquid inlet of electric field dehydration tank, the gas phase communication port of degassing tower is connected with the gas return port of electric field dehydration tank, and closed loop is formed between degassing tower and electric field dehydration tank.The utility model does not use chemical reagent, avoids the influence of chemical residue on subsequent refining process, and only uses small amount of electric energy, saves energy consumption, improves economic benefit, improves production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of oilfield equipment, specifically relating to a rotating electric field enhanced crude oil three-phase separator. Background Technology

[0002] Crude oil extraction is characterized by the transportation of a mixture of solids, liquids, and gases. Solids consist of sludge and scale, liquids consist of oil and water, and gases consist of condensate and desiccation. These states differ not only between different oil wells but also at different stages of the same well's operation. In the later stages of well operation, due to water-drive, steam, or carbon dioxide-driven oil production, the wellhead foam contains more water than oil, leading to slug flow and unclear interfaces, making ordinary three-phase separation difficult.

[0003] The principle of three-phase separation is that, under the influence of density, gravity, and packing material, three-phase separation is achieved through fluid impact. Conventional methods use chemical defoaming agents and reduce material viscosity by increasing temperature, thereby improving separation efficiency. However, chemical products are complex and can adversely affect the entire subsequent refining process; furthermore, chemical consumption and heating energy consumption reduce economic efficiency. Therefore, it is necessary to improve the three-phase separator. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides a rotating electric field-enhanced three-phase crude oil separator. The technical problem to be solved by this utility model is achieved through the following technical solution:

[0005] This invention provides a rotating electric field enhanced crude oil three-phase separator, comprising: a degassing tower and an electric field dehydration tank; the degassing tower is equipped with demisting packing; the electric field dehydration tank is equipped with an electric field component and coalescing packing in sequence; the electric field component includes three stainless steel electrodes, which extend into the electric field dehydration tank and are electrically connected to an external three-phase autotransformer to generate a rotating electric field in the region where the coalescing packing is located; the rotating electric field is used to induce molecular dipole moments to promote oil-water separation; wherein, the liquid outlet of the degassing tower is connected to the liquid inlet of the electric field dehydration tank, the gas connection port of the degassing tower is connected to the gas return port of the electric field dehydration tank, and a closed loop is formed between the degassing tower and the electric field dehydration tank.

[0006] In one embodiment of this utility model, the degassing tower is a vertical packed tower, comprising: a feed inlet, demister packing, an air outlet, a safety vent, a liquid outlet, a solid discharge outlet, a gas connection port, and a level gauge. The demister packing is located in the middle of the vertical packed tower, the feed inlet is located below the demister packing, and the air outlet is located above the demister packing. A safety vent is located at the top of the vertical packed tower, a liquid outlet is located on the side wall below the feed inlet, and a solid discharge outlet is located at the bottom. The gas connection port is located on the side wall between the feed inlet and the demister packing, and the level gauge is located below the gas connection port.

[0007] In one embodiment of this utility model, the demisting packing is a 250Y structured corrugated packing, and the height of the demisting packing is 5 to 10 times its diameter.

[0008] In one embodiment of this utility model, the diameter of the liquid outlet is at least four times the diameter of the feed inlet, the diameter of the air connection port is at least twice the diameter of the liquid outlet, and the distance between the liquid outlet and the air connection port is equal to the height of the demister packing.

[0009] In one embodiment of this utility model, the diameters of the feed inlet, the air outlet, and the solid discharge outlet are all equal, and the diameter of the safety relief outlet is at least twice the diameter of the air outlet; a T-shaped clean water flushing pipe and a check valve are provided at the lower part of the solid discharge outlet.

[0010] In one embodiment of this utility model, the electric field dehydration tank is a horizontal packed tank, comprising: a liquid inlet, a gas return inlet, an electric field component, coalescing packing, a sludge discharge outlet, a drain outlet, an oil discharge outlet, pressure gauges, and an oil-water interface meter. The liquid inlet is located at the center of the head end of the electric field dehydration tank; the gas return inlet is located at the top of the head end of the electric field dehydration tank; the coalescing packing is located in the middle of the electric field dehydration tank; the electric field component is located in front of the coalescing packing; the sludge discharge outlet is located at the bottom of the electric field dehydration tank and in front of the coalescing packing; the drain outlet is located at the bottom of the tail end of the electric field dehydration tank; and the oil discharge outlet is located at the top of the tail end of the electric field dehydration tank. Two pressure gauges are respectively located at the front and rear ends of the coalescing packing, and the oil-water interface meter is located near the oil discharge outlet.

[0011] In one embodiment of this utility model, the liquid inlet is connected to the liquid outlet of the degassing tower through a pipe, and the two have the same diameter; the gas return port is connected to the gas connection port of the degassing tower through a pipe, and the two have the same diameter.

[0012] In one embodiment of the present invention, the electric field dehydration tank is provided with a maintenance manhole at the front end and the rear end respectively. The three stainless steel electrodes of the electric field component are fixed to the cover plate of the maintenance manhole at the front end and extend into the electric field dehydration tank. The bottom of each stainless steel electrode is at least 150mm away from the bottom of the electric field dehydration tank.

[0013] In one embodiment of this utility model, the coalescing filler is a composite filler, comprising a modified resin egg tray and a stainless steel structured filler, wherein the length of the coalescing filler is 8 to 12 times its diameter.

[0014] In one embodiment of this utility model, the diameter of the sludge discharge port is equal to the diameter of the feed port of the degassing tower, and a T-shaped clean water flushing pipe and a check valve are provided at the lower part of the sludge discharge port; the drain outlet is provided with a liquid collection bag and an anti-vortex top plate; the oil-water interface meter is located before the oil discharge port, and the oil discharge port controls the oil discharge according to the liquid level signal of the oil-water interface meter.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention relates to a rotating electric field-enhanced three-phase crude oil separator. By forming a closed loop between the degassing tower and the electric field dehydration tank, it provides ample space for gas expansion, achieving thorough defoaming to prevent entrainment and ultimately realizing three-phase separation. Simultaneously, in the electric field dehydration tank, the rotating electric field replaces the traditional chemical reagents and heat consumption. The rotating electric field generates a molecular-level directional dipole moment effect in the coalescing packing region, improving the interfacial effect of the coalescing packing, enabling efficient coalescence of emulsified oil droplets, and accelerating water-oil separation. Since no chemical reagents are used, the impact of chemical residues on subsequent refining processes is avoided. Furthermore, it uses only a small amount of electricity, saving energy consumption, improving economic efficiency, and increasing production efficiency.

[0017] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a rotating electric field enhanced crude oil three-phase separator provided in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the electric field component provided in an embodiment of this utility model.

[0020] Attached reference numerals: 1-Degassing tower; 11-Inlet; 12-Demisting packing; 13-Outlet; 14-Safety relief port; 15-Liquid outlet; 16-Solid discharge port; 17-Gas connection port; 18-Level gauge; 2-Electric field dehydration tank; 21-Liquid inlet; 22-Return gas port; 23-Electric field component; 24-Coalescing packing; 25-Sludge discharge port; 26-Drainage port; 27-Oil discharge port; 28-Pressure gauge; 29-Oil-water interface meter. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following detailed description of a rotating electric field enhanced crude oil three-phase separator based on this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0022] The foregoing and other technical contents, features, and effects of this utility model will be clearly presented in the following detailed description of the specific embodiments with reference to the accompanying drawings. Through the description of the specific embodiments, a more in-depth and specific understanding can be gained of the technical means and effects adopted by this utility model to achieve the intended purpose. However, the accompanying drawings are only provided for reference and illustration and are not intended to limit the technical solution of this utility model.

[0023] Example 1

[0024] To address the problems of chemical reagent dependence and excessive heat consumption in existing crude oil three-phase separators, this invention provides a rotating electric field-enhanced crude oil three-phase separator, such as... Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of a rotating electric field enhanced crude oil three-phase separator provided in an embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of the electric field component provided in an embodiment of this utility model.

[0025] In this embodiment, the rotating electric field enhanced crude oil three-phase separator includes: a degassing tower 1 and an electric field dehydration tank 2; the degassing tower 1 is provided with demisting packing 12; the electric field dehydration tank 2 is provided with an electric field component 23 and coalescing packing 24 in sequence; the electric field component 23 includes three stainless steel electrodes, which are inserted into the electric field dehydration tank 2 and electrically connected to an external three-phase autotransformer to generate a rotating electric field in the region where the coalescing packing 24 is located; the rotating electric field is used to induce molecular dipole moments to promote oil-water separation; wherein, the liquid outlet 15 of the degassing tower 1 is connected to the liquid inlet 21 of the electric field dehydration tank 2, and the gas connection port 17 of the degassing tower 1 is connected to the gas return port 22 of the electric field dehydration tank 2, forming a closed loop between the degassing tower 1 and the electric field dehydration tank 2.

[0026] It is worth noting that the electric field component 23 promotes electrophoresis through a unidirectional stable electric field and then promotes aggregation through a changing rotating electric field, exhibiting a combined effect of electromagnetic force and induced molecular dipole moment. The closed loop provides ample space for gas expansion, thus achieving thorough demisting to prevent entrainment. This has positive technical and economic benefits in terms of energy saving, chemical reagent conservation, improved time efficiency, and reduced overall costs.

[0027] In this embodiment, the degassing tower 1 is a vertical packed tower, including: a feed inlet 11, a demisting packing 12, an air outlet 13, a safety vent 14, a liquid outlet 15, a solid discharge outlet 16, a gas connection port 17, and a level gauge 18. The demisting packing 12 is located in the middle of the vertical packed tower, the feed inlet 11 is located below the demisting packing 12, and the air outlet 13 is located above the demisting packing 12. The top of the vertical packed tower is provided with a safety vent 14, the liquid outlet 15 is provided on the side wall below the feed inlet 11, and the solid discharge outlet 16 is provided at the bottom. The gas connection port 17 is located on the side wall between the feed inlet 11 and the demisting packing 12, and the level gauge 18 is also provided below the gas connection port 17.

[0028] For example, the vertical packed tower has manholes at both the top and bottom. The feed inlet 11 is located slightly below the middle of the vertical packed tower. The demisting packing 12 is located between the middle of the vertical packed tower and the lower edge of the upper manhole. The air outlet 13 is located above the upper edge of the upper manhole. A safety vent 14 is located at the top of the vertical packed tower. The liquid outlet 15 is located below the lower edge of the lower manhole. The solid discharge outlet 16 is located at the bottom of the vertical packed tower. The gas connection port 17 is located below the demisting packing 12. The level gauge 18 is installed between the gas connection port 17 and the liquid outlet 15, located below the side wall where the gas connection port 17 is located. Preferably, the level gauge 18 can be a local and remote magnetic float level gauge with electric heating, a root valve, and a drain valve.

[0029] For example, the demisting packing 12 can be made of 250Y structured corrugated packing, and the height of the demisting packing 12 is 5 to 10 times its diameter. Further, the demisting packing 12 can be made of stainless steel of grade 304 or higher, with a support grate at the bottom and an anti-blowout pressure grate at the top.

[0030] For example, the diameter of the liquid outlet 15 is at least four times the diameter of the feed inlet 11, the diameter of the air connection port 17 is at least twice the diameter of the liquid outlet 15, and the distance between the liquid outlet 15 and the air connection port 17 is equal to the height of the demister packing 12.

[0031] For example, the diameters of the feed inlet 11, the air outlet 13, and the solid discharge outlet 16 are all equal, and the diameter of the safety vent 14 is at least twice the diameter of the air outlet 13; the lower part of the solid discharge outlet 16 is provided with a T-shaped clean water flushing pipe and a check valve, which are used to reverse push open and clean the pipe when blocked.

[0032] In this embodiment, the electric field dehydration tank 2 is a horizontal packed tank, including: a liquid inlet 21, a gas return port 22, an electric field component 23, coalescing packing 24, a sludge discharge port 25, a water discharge port 26, an oil discharge port 27, a pressure gauge 28, and an oil-water interface meter 29. The liquid inlet 21 is located at the center of the head end of the electric field dehydration tank 2, the gas return port 22 is located at the top of the head end of the electric field dehydration tank 2, the coalescing packing 24 is located in the middle of the electric field dehydration tank 2, and the electric field component 23 is located in front of the coalescing packing 24. The sludge discharge port 25 is located at the bottom of the electric field dehydration tank 2 and in front of the coalescing packing 24. The water discharge port 26 is located at the bottom of the tail end of the electric field dehydration tank 2, and the oil discharge port 27 is located at the top of the tail end of the electric field dehydration tank 2. Two pressure gauges 28 are respectively located at the front and rear ends of the coalescing packing 24, and the oil-water interface meter 29 is located near the oil discharge port 27.

[0033] For example, the electric field dehydration tank 2 is provided with maintenance manholes at both its front and rear ends. The three stainless steel electrodes of the electric field component 23 are fixed to the cover plate of the maintenance manhole at the front end and extend into the electric field dehydration tank 2. Specifically, all three stainless steel electrodes are fixed to the cover plate of the maintenance manhole at the front end, and the distance between the bottom of each stainless steel electrode and the bottom of the tank body of the electric field dehydration tank 2 is not less than 150mm. Figure 2 As shown, further, the cover plate of the maintenance manhole has three circular holes evenly distributed along its circumference. Three stainless steel electrodes are fixed by casting insulating resin, with their lower ends extending into the lower part of the electric field dehydration tank 2, and their upper ends connected to the three-phase ports of a three-phase self-coupling adjustable transformer. Preferably, the three-phase self-coupling adjustable transformer has a power range of 10KVA~100KVA, an input voltage of 380V, and an adjustable output voltage range of 0~430V.

[0034] For example, the liquid inlet 21 is connected to the liquid outlet 15 of the degassing tower 1 through a pipe, and the two have the same diameter; the gas return port 22 is connected to the gas connection port 17 of the degassing tower 1 through a pipe, and the two have the same diameter.

[0035] For example, the coalescing packing 24 is a composite packing, including modified resin egg trays and stainless steel structured packing, and the length of the coalescing packing 24 is 8 to 12 times its diameter. Furthermore, the front and rear ends of the coalescing packing 24 are clamped by anti-impact pushing grate plates, and the gap between the coalescing packing 24 and the inside of the side wall of the electric field dehydration tank 2 is filled with metal wire mesh packing to ensure that there are no short-circuit gaps.

[0036] For example, the diameter of the sludge discharge port 25 is equal to the diameter of the feed port 11 of the degassing tower 1. A T-shaped clean water flushing pipe and a check valve are installed at the lower part of the sludge discharge port 25 for reverse flushing and pipe cleaning in case of blockage. The drain port 26 is equipped with a liquid collection bag and an anti-vortex top plate. The oil-water interface meter 29 is located before the oil discharge port 27, and the oil discharge port 27 controls oil discharge based on the liquid level signal detected by the oil-water interface meter 29. Specifically, the oil discharge port 27 is equipped with an oil discharge control valve, which automatically adjusts its opening degree according to the liquid level signal detected by the oil-water interface meter 29 to achieve oil discharge control.

[0037] The working principle of this novel rotating electric field enhanced crude oil three-phase separator is as follows:

[0038] Crude oil flows into the lower middle section of degassing tower 1 through inlet 11, where it is fully depressurized, allowing dissolved and slug-driven gases to be released. Due to differences in the quality of the displacing agent and crude oil, some viscous, fine foam remains in the gas. This foam rises with the airflow, passing through the demister packing 12 for filtration, forming a liquid film that drips back down. The gas, free of foam and droplets, continues upward through the demister packing 12 and is automatically pressure-controlled and transported to the natural gas gathering station through outlet 13. When the pressure exceeds the limit, the safety vent 14 at the top of degassing tower 1 automatically opens to release pressure, and the depressurized gas enters the flare system.

[0039] The liquid phase in the degassing tower 1 accumulates at the bottom, while excess liquid phase is discharged through the outlet 15 and piped to the inlet 21 of the electric field dehydration tank 2. As the liquid in the electric field dehydration tank 2 gradually fills the internal space, the electric field component 23 is activated, and electrical energy is introduced into the liquid. The dipole moment effect changes at the molecular level, and the rotating electric field promotes the attraction of polar and non-polar molecules. At this time, some dissolved salts are suspended and scaled up to form sludge and settle, and microemulsified oil droplets aggregate into large oil droplets and show a clear tendency to float to the surface to form an oil layer. At the same time, a small amount of gas is released. The small amount of gas is transported from the return gas port 22 through the pipe to the gas connection port 17, where it is combined with the airflow and passes upward again through the demisting packing 12 to achieve purification.

[0040] The liquid phase enhanced by the rotating electric field is pushed backward in the electric field dehydration tank 2. Through the coalescing packing 24, under the action of the fluid inertial force field and the interface effect of the modified packing, the oil and water in the liquid phase are attracted and repelled by different forces. At the same time, under the action of gravity field and after long-distance transportation, obvious upper oil and lower water stratification are formed, and finally oil-water separation is achieved.

[0041] Furthermore, after passing through the coalescing packing 24, the lower layer water is automatically discharged through the drain outlet 26. The drain outlet 26 has an enlarged collection chamber and an anti-vortex top cover to prevent the upper layer oil from being sucked out, and the flow rate can be adjusted by a valve to ensure a uniform and stable flow rate. Under the automatic control of the oil-water interface meter 29, the upper layer oil is automatically discharged through the oil outlet 27. During stable operation, the oil is discharged through the oil outlet 27 at a position close to the centerline of the oil layer interface to avoid water or a small amount of emulsified oil in the oil. Sufficient hydraulic residence time ensures that the interfacial emulsion layer is as thin as possible, and finally, the level gauge 18 makes a comprehensive judgment to ensure that the working state is in the maximum working efficiency.

[0042] It is worth noting that the rotating electric field enhanced crude oil three-phase separator of this utility model first fully releases the gas and removes the foam through the degassing tower 1, and then connects to the rotating electric field through the electric field dehydration tank 2 to perform electromagnetic oscillation on the liquid phase to promote the agglomeration and sedimentation of solid and impurities. At the same time, the emulsified oil agglomerates into large oil droplets to form an oil layer that floats to the surface, improves the dipole moment of dissolved salts and promotes the interaction of the coalescing packing 24, thereby improving the quality and efficiency of three-phase separation. It has the advantages of energy saving and environmental protection, simple and reliable operation and management, and improved technical and economic efficiency.

[0043] Significant solid matter in crude oil has a static settling space at the bottom of degassing tower 1. After accumulation, it is discharged under pressure through the solids discharge port 16. If the solids discharge port 16 is blocked, the blockage can be cleared with clean water, and the pipe can be swept with clean water after discharge to facilitate the next solids discharge. The rotating electric field of electric field component 23 can cause the initially stable suspended matter to self-aggregate and flocculate into sludge, which is then discharged under pressure through the sludge discharge port 25 after accumulation. Similarly, if the sludge discharge port 25 is blocked, the blockage can be cleared with clean water, and the pipe can be swept with clean water after discharge to facilitate the next sludge discharge.

[0044] The feed inlet 11 of the degassing tower 1 is automatically controlled by the flow rate, which controls the opening and closing of the feed valve. The outlet 13 is automatically controlled by the pressure, which controls the opening and closing of the outlet valve. The drain outlet 26 of the electric field dehydration tank 2 is automatically controlled by the flow rate, which controls the opening and closing of the drain valve. The overall operation is monitored and balanced by the level gauge 18. The pressure gauge 28 of the electric field dehydration tank 2 is used to monitor the working status of the coalescing packing 24. If the pressure difference displayed by the pressure gauge 28 is too low, it indicates a short circuit; if it is too high, it indicates a blockage, requiring reverse flushing, sludge removal, and regeneration before use. The solids removal, sludge removal, and packing flushing can all be determined according to the production schedule to adapt to different crude oil production cycles.

[0045] Understandably, this utility model's rotating electric field enhanced crude oil three-phase separator incorporates electrostatic bridging, lightning protection, anti-static grounding, and neutral point safety grounding to comply with electrical instrumentation safety regulations. After installation of the electric field component 23, rigorous grounding, insulation, and leakage current tests are performed before it can be put into operation. The main control circuit is equipped with leakage current protection and electrical isolation from other equipment. Furthermore, the PLC (Programmable Logic Controller) self-control complies with the user's DCS (Distributed Control System) communication protocol. All main equipment, pipelines, instruments, and pumps / valve are made of stainless steel that meets pressure and corrosion standards, and are equipped with external insulation structures to meet environmental requirements. Insulation and heat tracing meet extreme temperature protection requirements for the operating environment.

[0046] This invention relates to a rotating electric field-enhanced three-phase crude oil separator. By forming a closed loop between the degassing tower and the electric field dehydration tank, it provides ample space for gas expansion, achieving thorough defoaming to prevent entrainment and ultimately realizing three-phase separation. Simultaneously, in the electric field dehydration tank, the rotating electric field replaces the traditional chemical reagents and heat consumption. The rotating electric field generates a molecular-level directional dipole moment effect in the coalescing packing region, improving the interfacial effect of the coalescing packing, enabling efficient coalescence of emulsified oil droplets, and accelerating water-oil separation. Since no chemical reagents are used, the impact of chemical residues on subsequent refining processes is avoided. Furthermore, it uses only a small amount of electricity, saving energy consumption, improving economic efficiency, and increasing production efficiency.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that an article or device comprising a list of elements includes not only those elements but also other elements not expressly listed. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device comprising said element. Terms such as "connected" or "linked" are not limited to physical or mechanical connections but can include electrical connections, whether direct or indirect. The orientations or positional relationships indicated by terms such as "upper," "lower," "left," and "right" are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0048] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A rotating electric field enhanced crude oil three-phase separator, characterized by, include: Degassing tower and electric field dehydration tank; The degassing tower is equipped with demisting packing; the electric field dehydration tank is equipped with an electric field component and coalescing packing in sequence; the electric field component includes three stainless steel electrodes, which are inserted into the electric field dehydration tank and electrically connected to an external three-phase autotransformer to generate a rotating electric field in the area where the coalescing packing is located; the rotating electric field is used to induce molecular dipole moments to promote oil-water separation. The degassing tower has its liquid outlet connected to the liquid inlet of the electric field dehydration tank, and its gas connection port is connected to the gas return port of the electric field dehydration tank, forming a closed loop between the degassing tower and the electric field dehydration tank.

2. The rotating electric field enhanced crude oil three-phase separator according to claim 1, characterized in that, The degassing tower is a vertical packed tower, comprising: a feed inlet, demister packing, a gas outlet, a safety vent, a liquid outlet, a solids discharge outlet, a gas-to-air connection port, and a level gauge. The demisting packing is located in the middle of the vertical packed tower, the feed inlet is located below the demisting packing, and the air outlet is located above the demisting packing. The top of the vertical packed tower is provided with a safety vent, the side wall below the feed inlet is provided with a liquid outlet, and the bottom is provided with a solid discharge outlet. The air connection port is located on the side wall between the feed inlet and the demisting packing, and the liquid level gauge is also provided below the air connection port.

3. The rotating electric field enhanced crude oil three-phase separator according to claim 1, characterized in that, The demisting packing is a 250Y structured corrugated packing, and the height of the demisting packing is 5 to 10 times its diameter.

4. The rotating electric field enhanced crude oil three-phase separator according to claim 2, characterized in that, The diameter of the liquid outlet is at least four times the diameter of the feed inlet, the diameter of the air connection port is at least twice the diameter of the liquid outlet, and the distance between the liquid outlet and the air connection port is equal to the height of the demister packing.

5. The rotating electric field enhanced crude oil three-phase separator according to claim 2, characterized in that, The diameters of the feed inlet, the air outlet, and the solid discharge outlet are all equal, and the diameter of the safety vent is at least twice the diameter of the air outlet; a T-shaped clean water flushing pipe and a check valve are provided at the lower part of the solid discharge outlet.

6. The rotating electric field enhanced crude oil three-phase separator according to claim 2, characterized in that, The electric field dehydration tank is a horizontal packed tank, including: a liquid inlet, a gas return inlet, electric field components, coalescing packing, a sludge discharge outlet, a water discharge outlet, an oil discharge outlet, a pressure gauge, and an oil-water interface meter. The liquid inlet is located at the center of the head of the electric field dehydration tank; the air return port is located at the top of the head of the electric field dehydration tank; the coalescing packing is located in the middle of the electric field dehydration tank; and the electric field component is located in front of the coalescing packing. The sludge discharge port is located at the bottom of the electric field dehydration tank and in front of the coalescing packing. The drain outlet is located at the bottom of the tail end of the electric field dehydration tank; and the oil discharge port is located at the top of the tail end of the electric field dehydration tank. Two pressure gauges are respectively located at the front and rear ends of the coalescing packing, and the oil-water interface meter is located near the oil discharge port.

7. The rotating electric field enhanced crude oil three-phase separator according to claim 6, characterized in that, The liquid inlet is connected to the liquid outlet of the degassing tower via a pipe, and the two have the same diameter; the gas return port is connected to the gas connection port of the degassing tower via a pipe, and the two have the same diameter.

8. The rotating electric field enhanced crude oil three-phase separator according to claim 6, characterized in that, The electric field dehydration tank is provided with a maintenance manhole at both the front and rear ends. The three stainless steel electrodes of the electric field component are fixed to the cover plate of the maintenance manhole at the front end and extend into the electric field dehydration tank. The bottom of each stainless steel electrode is at least 150mm away from the bottom of the electric field dehydration tank.

9. The rotating electric field enhanced crude oil three-phase separator according to claim 6, characterized in that, The coalescing packing is a composite packing, comprising modified resin egg trays and stainless steel structured packing, and the length of the coalescing packing is 8 to 12 times its diameter.

10. The rotating electric field enhanced crude oil three-phase separator according to claim 6, characterized in that, The diameter of the sludge discharge port is equal to the diameter of the feed port of the degassing tower. A T-shaped clean water flushing pipe and a check valve are provided at the lower part of the sludge discharge port. The drain outlet is provided with a liquid collection bag and an anti-vortex top plate. The oil-water interface meter is located before the oil discharge port, and the oil discharge port controls the oil discharge according to the liquid level signal of the oil-water interface meter.

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